JP5650417B2 - Chair - Google Patents

Description

  The present invention attaches a contact member (for example, a back support member, a seat member, etc.) to which a person who sits contacts, and a back member (for example, a back support member, a seat back member, etc.) located on the back as viewed from the contact side. It relates to a chair that is easy and easy to remove.

As a structure of the back support part of the chair, a back support member (sometimes referred to as a “backing member”) as a contact member that a seated person contacts, and a back member positioned on the back as viewed from the contact side The one having a back support member (sometimes referred to as a “back cover member”) is common. Moreover, as a structure of the seat part of a chair, as a contact member (it may be called a "sitting member") as a contact member which the seated person contacts, and as a back member located in the back seeing from the contact side One having a seat back member (sometimes referred to as a “seat cover member”) is generally used (see, for example, Patent Documents 1 and 2).
Recently, the demand for recycling has been strengthened against the background of increasing awareness of environmental destruction, and contact members (for example, back support members, seat members, etc.) and back members (for example, back support members, back members for back seats) are also used for chairs. Etc.) can be easily removed and attached, and can be replaced with new parts when the contact member and the back member become dirty or damaged.

For example, in the type in which the back support member and the back support member are attached by pressing, as shown in FIG. 9, the back support member 1 as the back member is shown by the arrow A in FIG. By pushing in the direction and engaging the protruding portion 3 provided on the back support back member 1 and the square box-shaped engagement portion 4 (see FIG. 10) provided on the back support member 2. The back member 1 and the back support member 2 can be attached easily and firmly. On the other hand, the back support member 1 and the back support member 2 are firmly engaged with each other so that the back support member 1 and the back support member 2 do not come off during use. It is difficult to remove the back member 1 and the back member 1 and the back support member 2 may be damaged during removal.
Although not shown, in the type in which the back support member and back support member are slid to be attached and removed, when removing, the back support member is slid with respect to the back support member and engaged with the protrusion. Since the engagement state of the parts can be released, it is easy to remove them. On the other hand, at the time of attachment, it is necessary to be skilled to slidably engage the back support member with the back support member, and it is difficult to attach easily because other members such as the cover of the back support member are in the way. there were.

Thus, in the prior art, since attachment and removal of the back support member and back support member are performed in one direction, either attachment or removal is difficult. This is a problem that occurs in the same manner when the seat member as the contact member and the seat back member as the back member are attached and detached.
Therefore, it is easy to attach a contact member (for example, a back support member, a seat member, etc.) to which a seated person comes in contact and a back member (for example, a back support back member, a seat back member, etc.) located on the back as viewed from the contact side. At present, there are no chairs that are easy to remove and easy to use.

Japanese Patent Laid-Open No. 11-128022 JP 2001-95642 A

An object of the present invention is to solve the conventional problems and achieve the following objects.
That is, the present invention includes a contact member (for example, a back support member, a seat member, etc.) that a seated person makes contact with, and a back member (for example, a back support member, a seat back member, etc.) located on the back as viewed from the contact side. It is an object to provide a chair that is easy to attach and remove.

Means for solving the problems are as follows. That is,
<1> A chair having a contact member that a seated person makes contact with and a back member on the back as viewed from the contact side,
A protrusion is provided on one of the contact member and the back member, and the other of the contact member and the back member slides in a direction substantially orthogonal to the protrusion direction of the protrusion and is detachably engaged with the protrusion. The chair is characterized in that a portion is provided.
The chair according to <1> includes a contact member that a person who sits in contact with and a back member on the back as viewed from the contact side. A protrusion is provided on one of the contact member and the back member. The other of the contact member and the back member is provided with an engaging portion that slides in a direction substantially orthogonal to the protruding direction of the protruding portion and can be detached from the protruding portion.
When the contact member and the back member are attached, the contact member and the back member are easily and firmly secured by pressing the contact member and the back member to engage the protruding portion and the engaging portion. Can be attached to.
When removing the contact member and the back member, by sliding at least one of the contact member and the back member, the engagement state of the projecting portion and the engagement portion is released, and the contact member And it can remove easily, without damaging the said back member.
Therefore, in the chair of the present invention, the attachment direction and the detachment direction of the contact member and the back member are different (attachment and removal of the contact member and the back member are performed in two different directions). And the back member are easy to attach and remove.
<2> A deviation preventing projection is provided on one of the contact member and the back member, and a deviation preventing engaging portion that can be engaged with the deviation preventing projection is provided on the other of the contact member and the back member. The chair according to <1>.
In the chair described in <2>, a protrusion for preventing misalignment is provided on one of the contact member and the back member. The other of the contact member and the back member is provided with a slip prevention engaging portion that can be engaged with the slip prevention projection. When the displacement preventing projection and the displacement preventing engaging portion are engaged, it is possible to reliably prevent displacement of at least one of the contact member and the back member even when a person is seated on the chair and a load is applied. .
<3> The chair according to any one of <1> to <2>, wherein the contact member is a back support member and the back member is a back support back member.
In the chair according to <3>, in the back support portion, the contact member is a back support member, and the back member is a back support back member. A protrusion is provided on one of the back member and the back member, and the other of the back member and the back member slides in a direction substantially orthogonal to the protrusion direction of the protrusion and the protrusion. A detachable engagement portion is provided.
When attaching the back support member and the back support back member, the back support member and the back support back member are pressed to engage the protruding portion and the engagement portion, thereby The back support member can be easily and firmly attached.
When removing the back support member and the back support back member, by sliding at least one of the back support member and the back support back member, the engagement state of the protruding portion and the engagement portion is It is released and can be easily removed without damaging the back support member and the back support member.
<4> The chair according to any one of <1> to <2>, wherein the contact member is a seat member and the back member is a seat back member.
In the chair according to <4>, in the seat portion, the contact member is a seat member, and the back member is a seat back member. One of the seat member and the seat back member is provided with a protrusion, and the other of the seat member and the seat back member is slidable in a direction substantially perpendicular to the protrusion direction of the protrusion and can be detached from the protrusion. An engaging portion is provided.
When the seat member and the seat back member are attached, the seat member and the seat back member are engaged by pressing the seat member and the seat back member to engage the projecting portion and the engagement portion. It can be easily and firmly attached.
When removing the seat member and the seat back member, by sliding at least one of the seat member and the seat back member, the engagement state of the projecting portion and the engagement portion is released, It can be easily removed without damaging the seat member and the seat back member.
<5> Between the back support member and the back support back member, having a connecting member for connecting the back support portion and the seat portion,
A deviation preventing projection is provided on one of the back receiving member and the back receiving back member, and a displacement preventing engaging part that is engageable with the deviation preventing protruding part is provided on the connecting member. It is a chair as described in <3>.
In the chair according to <5>, when the back support portion is relatively small, the misalignment prevention protrusion provided on either the back support member or the back support back member is used as the back support. It engages with an engaging portion for preventing displacement provided on a connecting member that connects the seat portion and the seat portion.
When the back support member and the back support member are attached, the protrusion for preventing misalignment and the engaging part for preventing misalignment are firmly engaged, so that even if a person sits on a chair and receives a load, the back rest is supported. The member and the back support member can be reliably fixed without being displaced.
<6> The chair according to any one of <1> to <5>, wherein the protruding portion has an asymmetric shape.
In the chair according to <6>, the protrusion has an asymmetric shape. Then, the engaging portion that engages with the protruding portion also has an asymmetric shape. For example, if a wall (R) is provided on one wall surface of the box-shaped engaging portion and the protruding piece that engages with the engaging portion, the box-shaped engaging portion R is attached when the contact member and the back member are attached. The projecting portion can be engaged by copying, and positioning becomes easy.

  According to the present invention, a conventional problem can be solved, and a contact member (for example, a back support member, a seat member, etc.) that a seated person makes contact with, and a back member (for example, a back surface of the back support) on the back as viewed from the contact side. It is possible to provide a chair that can be easily attached to and detached from a member, a seat back member, and the like.

FIG. 1A is a plan view showing an example of a back support member. 1B is a cross-sectional view taken along line AA in FIG. 1A. FIG. 1C is an enlarged view of the protrusion of FIG. 1A. FIG. 1D is an enlarged view showing another example of the protruding portion. FIG. 2A is a plan view illustrating an example of a back support member. 2B is a cross-sectional view taken along line BB in FIG. 2A. FIG. 2C is an enlarged view of the engaging portion of FIG. 2A. FIG. 2D is an enlarged view showing another example of the engaging portion. FIG. 3 is a cross-sectional view of a back support portion to which a back support member having a cushion material and a cover and a back support member are attached. FIG. 4A is a perspective view illustrating a state in which the back support member and the back support member are attached. FIG. 4B is a perspective view showing how the back support member and the back support back member are removed. FIG. 5A is a perspective view illustrating a state in which the seat member and the seat back member are attached. FIG. 5B is a perspective view showing a state where the seat member and the seat back member are removed. FIG. 6A is a plan view showing another example of the back support member. FIG. 6B is a plan view illustrating another example of the back support member. FIG. 7A is a plan view showing still another example of the back support member. FIG. 7B is a plan view showing still another example of the back support member. FIG. 8 is another perspective view showing a state in which the seat member and the seat back member are attached. FIG. 9 is a perspective view showing a state in which a back support member and a back support member of a conventional chair are attached. FIG. 10 is an enlarged view showing the engaging portion of FIG.

  The chair of the present invention includes a contact member and a back member, and further includes other members as necessary.

<Contact member>
The contact member is not particularly limited as long as it is a member that contacts a person sitting on a chair, and can be appropriately selected according to the purpose. Examples thereof include a back support member and a seat member.

-Back support member (backing member)-
The back support member is not particularly limited in size, shape, structure, material, and the like as long as the back portion of a person sitting on a chair can be contacted, and can be appropriately selected according to the purpose. Examples of the material include metals such as stainless steel, aluminum, and iron; resins such as polycarbonate resin, polyvinyl chloride resin, polypropylene resin, ABS resin, FRP, and nylon. Among these, polypropylene resin is particularly preferable from the viewpoints of moldability and strength.
There is no restriction | limiting in particular also about the shape of a said back member, a magnitude | size, etc., It can select suitably according to the objective, The shape and magnitude | size of the grade normally used are preferable.
The back support member preferably has a single-layer structure or a two-layer structure.

It is preferable to have a cushioning material covered with an outer cover (cover) on the surface of the back support member on the side in contact with the person sitting. There is no restriction | limiting in particular about a magnitude | size, a shape, a structure, a material as said cushion material, According to the objective, it can select suitably. Examples of the material include polyurethane.
There is no restriction | limiting in particular also about the shape of a said cushion material, a magnitude | size, etc., It can select suitably according to the objective, The shape and magnitude | size of the grade normally used are preferable.
The cushion material preferably has a single-layer structure or a two-layer structure.
The outer skin (cover) is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include cloth made of natural fibers, cloth made of synthetic fibers, leather, and synthetic leather.

It is preferable that a surface of the back member that is not in contact with a person sitting on a chair has a protrusion or an engagement portion described later, and has a protrusion for preventing displacement or an engagement portion for preventing displacement described later. It is preferable to have a joint portion between the back receiving portion and the connecting member that connects the seat portion. In addition, you may connect with a connection member by providing a connection part in a back support member.
The protruding portion, the engaging portion, the misalignment preventing protrusion, and the misalignment preventing engaging portion may be integrated with or separate from the back support member, but may be integrated (one member). preferable.
The connecting portion between the back support member and the connecting member is not particularly limited and can be appropriately selected according to the purpose. Examples thereof include screw fixing, screw fixing, an engagement tool, and a slide engagement tool.
The connecting member is not particularly limited in size, shape, structure, material and the like as long as the back receiving part and the seat part can be connected, and can be appropriately selected according to the purpose. Examples of the material include metals such as stainless steel, aluminum, and iron, polycarbonate resins, polyvinyl chloride resins, polypropylene resins, ABS resins, FRP, nylon, and the like.

-Seat member (seat member)-
The seat member is not particularly limited in terms of size, shape, structure, material, and the like as long as the buttocks of a person sitting on a chair can contact it, and can be appropriately selected according to the purpose. Examples of the material include metals such as stainless steel, aluminum, and iron; resins such as polycarbonate resin, polyvinyl chloride resin, polypropylene resin, ABS resin, FRP, and nylon. Among these, polypropylene resin is particularly preferable from the viewpoints of moldability and strength.
There is no restriction | limiting in particular also about the shape of a said seat member, a magnitude | size, etc., It can select suitably according to the objective, The shape and magnitude | size of the grade normally used are preferable.
The seat member preferably has a single-layer structure or a two-layer structure.

It is preferable that the surface of the seat member on the side in contact with the person sitting on the chair has a cushion material covered with an outer cover (cover). There is no restriction | limiting in particular about a magnitude | size, a shape, a structure, a material as said cushion material, According to the objective, it can select suitably. Examples of the material include polyurethane.
There is no restriction | limiting in particular also about the shape of a said cushion material, a magnitude | size, etc., It can select suitably according to the objective, The shape and magnitude | size of the grade normally used are preferable.
The cushion material preferably has a single-layer structure or a two-layer structure.
The outer skin (cover) is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include cloth made of natural fibers, cloth made of synthetic fibers, leather, and synthetic leather.

On the surface of the seat member on the side where the person sitting on the chair does not come in contact, it has a protrusion or engagement part described later, and preferably has a protrusion for preventing displacement or an engagement part for preventing displacement described later. It is preferred to have a leg attachment.
The projecting portion, the engaging portion, the misalignment preventing protrusion, and the misalignment preventing engaging portion may be integrated with or separate from the seat member, but are preferably integrated (one member). .
The seat is connected to the leg by the leg attachment. The leg attachment is not particularly limited and can be appropriately selected according to the purpose. Examples thereof include stainless steel leg attachment, aluminum leg attachment, iron leg attachment, and resin leg attachment. Can be mentioned.

<Back member>
The back member is not particularly limited as long as it is a member that fixes the contact member, and can be appropriately selected depending on the purpose. Examples thereof include a back support member and a seat back member.

-Back support member (back cover member)-
The back support back member is a member that fixes a back support member as the contact member.
There is no restriction | limiting in particular about the magnitude | size, a shape, a structure, a material, etc. as said back support back member, According to the objective, it can select suitably. Examples of the material include metals such as stainless steel, aluminum, and iron; resins such as polycarbonate resin, polyvinyl chloride resin, polypropylene resin, ABS resin, FRP, and nylon. Among these, polypropylene resin is particularly preferable from the viewpoints of moldability and strength.
There is no restriction | limiting in particular also about the shape of a back support member, a magnitude | size, etc., It can select suitably according to the objective, The shape and magnitude | size of the grade normally used are preferable.
The structure of the back support member is preferably a single layer structure or a two layer structure.

  It is preferable that the back support back member has a protrusion or an engagement part, which will be described later, on the surface on the back support member side, and has a shift prevention protrusion or a shift prevention engagement part which will be described later. The displacement preventing projection or the displacement preventing engaging portion may be integrated with or separate from the back support member, but is preferably integrated (one member).

-Seat back member (seat cover member)-
The seat back member is a member that fixes a seat member as the contact member.
There is no restriction | limiting in particular about the magnitude | size, a shape, a structure, a material, etc. as said seat back member, According to the objective, it can select suitably. Examples of the material include metals such as stainless steel, aluminum, and iron; resins such as polycarbonate resin, polyvinyl chloride resin, polypropylene resin, ABS resin, FRP, and nylon. Among these, polypropylene resin is particularly preferable from the viewpoints of moldability and strength.
There is no restriction | limiting in particular also about the shape, magnitude | size, etc. of the said seat back member, According to the objective, it can select suitably, The shape and magnitude | size of the grade normally used are preferable.
The structure of the seat back member is preferably a single layer structure or a two layer structure.

It is preferable that the seat back member has a projecting portion or an engaging portion, which will be described later, on the surface on the seat member side, and has a projecting portion for preventing slip or an engaging portion for preventing slip described later. The protruding portion, the engaging portion, the protrusion for preventing misalignment, or the engaging portion for preventing misalignment may be integrated with or separate from the seat back member, but is preferably integrated (one member).
It is preferable that the seat back member has an opening at a portion of the seat member having a leg attachment.

<< Projection part, engagement part >>
One of the contact member and the back member is provided with a protrusion, and the other of the contact member and the back member is provided with an engagement portion that is engaged with the protrusion and can be detached when removed. Yes. That is, when the protrusion is provided on the contact member, the engaging portion is provided on the back member. On the other hand, when the engaging portion is provided on the contact member, the protruding portion is provided on the back member.
In the back support portion, the contact member is a back support member and the back member is a back support back member. Therefore, when a protrusion is provided on the back support member, the engaging portion is connected to the back support member. Is provided. On the other hand, when the engaging portion is provided on the back support member, the projecting portion is provided on the back support member.
In the seat part, since the contact member is a seat member and the back member is a seat back member, when the protrusion is provided in the seat member, the engaging part is provided in the seat back member. On the other hand, when the engaging portion is provided on the seat member, the projecting portion is provided on the seat back member.

-Protrusion-
As long as the protrusion is provided on one of the contact member and the back member, the number, size, shape, structure, material, and the like are not particularly limited, and can be appropriately selected according to the purpose.
The number of protrusions is preferably one or more, and more preferably 2 to 10. As the shape of the protruding portion, for example, it is preferable that the protruding portion is formed in at least one of a linear shape, a curved shape, a dotted shape, and a protruding shape. As a result, the protruding portion and the engaging portion can be engaged with each other in any one of a line and a line, a line and a point, a curve and a point, a surface and a surface, and a surface and a curve.
There is no restriction | limiting in particular about the magnitude | size of the said protrusion part, According to the objective, it can select suitably.
Examples of the material of the protruding portion include metal materials such as iron, aluminum, and stainless steel; and synthetic resins such as polycarbonate resin, polyvinyl chloride resin, polypropylene resin, ABS resin, FRP, and nylon. Among these, polypropylene resin is particularly preferable from the viewpoints of moldability and strength.
When the synthetic resin is used as the material of the protruding portion, even a protruding portion having a complicated shape can be molded, and using the molding die, the contact member and the back member can be integrally molded, and mass production is possible. Is possible. Moreover, in this invention, since the damage of a protrusion part is prevented at the time of removal of the said contact member and the said back member, and replacement | exchange of components decreases, it is preferable that it is integral (one member) from a cost viewpoint.
The shape of the protruding portion may be either a symmetric shape or an asymmetric shape, but is more preferably an asymmetric shape from the viewpoint of easy positioning and prevention of displacement.
There is no restriction | limiting in particular as said symmetrical shape, According to the objective, it can select suitably, For example, a circular shape, a square, a rectangle, a triangle etc. are mentioned.
There is no restriction | limiting in particular as said asymmetric shape, According to the objective, it can select suitably, For example, substantially D shape, substantially L shape, substantially J shape, substantially trapezoid shape, rectangular shape etc. are mentioned.
As an example of the asymmetric shape, the outer protruding piece of the protruding portion has a round (R), the outer engaging wall that engages with the outer protruding piece has a round (R), the inner side of the protruding portion It is preferable that the protruding piece has a round (R) and the inner engagement wall that engages with the inner protruding piece has a round (R).

-Engagement section-
As long as the engaging portion is provided on one of the contact member and the back member, the number, size, shape, structure, material, and the like are not particularly limited, and can be appropriately selected according to the purpose. .
The number of the engaging portions is preferably 1 or more, and more preferably 2 to 10. The shape of the engaging portion is preferably formed in at least one of a linear shape, a curved shape, a dot shape, and a box shape, for example. As a result, the protruding portion and the engaging portion can be engaged with each other in any one of a line and a line, a line and a point, a curve and a point, a surface and a surface, and a surface and a curve. Among these, a box-shaped engagement portion is particularly preferable.
The shape of the engaging portion is formed in either a symmetric shape or an asymmetric shape according to the shape of the protruding portion.
There is no restriction | limiting in particular as said symmetrical shape, According to the objective, it can select suitably, For example, a circular shape, a square, a rectangle, a triangle etc. are mentioned.
There is no restriction | limiting in particular as said asymmetric shape, According to the objective, it can select suitably, For example, substantially D shape, substantially L shape, substantially J shape, substantially trapezoid shape, rectangular shape etc. are mentioned. When the asymmetric shape is used in this manner, resistance is generated when the protrusion and the engaging portion engage with each other, so that positioning can be easily performed and displacement can be prevented.
As an example of the asymmetric shape, the outer protruding piece of the protruding portion has a round (R), the outer engaging wall that engages with the outer protruding piece has a round (R), the inner side of the protruding portion It is preferable that the protruding piece has a round (R) and the inner engagement wall that engages with the inner protruding piece has a round (R).
There is no restriction | limiting in particular about the magnitude | size of the said engaging part, According to the objective, it can select suitably.
Examples of the material of the engaging portion include metal materials such as iron, aluminum, and stainless steel; and synthetic resins such as polycarbonate resin, polyvinyl chloride resin, polypropylene resin, ABS resin, FRP, and nylon. Among these, polypropylene resin is particularly preferable from the viewpoints of moldability and strength.
As the material of the engaging portion, if a synthetic resin is used, even an engaging portion having a complicated shape can be molded, and using the molding die, it can be integrally molded with the contact member and the back member, Mass production is possible. Moreover, in this invention, since the damage of an engaging part is prevented at the time of removal of the said contact member and the said back member, and replacement | exchange of components decreases, it is preferable that it is integral (one member) from a cost viewpoint.

The engaging portion is slidable in a direction substantially orthogonal to the protruding direction of the protruding portion and can be detached from the protruding portion. Thereby, it can remove easily, without damaging the said contact member and the said back member.
The engaging portion can be provided to be slidable in an upward direction, a downward direction, a right direction, a left direction, and other various directions as long as the direction is substantially orthogonal to the protruding direction of the protruding portion. For example, when sliding downward, a notch or an opening is provided in the lower engagement wall of the box-shaped engagement portion. When sliding rightward, a notch or an opening is provided in the right engagement wall of the box-shaped engagement portion. When sliding upward, a notch or an opening is provided in the upper engagement wall of the box-shaped engagement portion. When sliding leftward, a notch or an opening is provided in the left engagement wall of the box-shaped engagement portion.
It can also be slidable in both the upper and lower directions, and a notch or an opening is provided in the upper and lower engaging walls of the box-shaped engaging portion. In this case, it is preferable that the engaging part and the protruding part have a left-right asymmetric shape.
Moreover, it can also be made to be slidable in both the left and right directions, and a notch or an opening is provided in the right and left engaging walls of the box-shaped engaging portion. In this case, it is preferable that the engaging portion and the protruding portion have a vertically asymmetric shape.
Note that a range of 90 ° ± 15 ° is included in the direction substantially orthogonal to the protruding direction of the protruding portion.

<< Protrusions for preventing misalignment, engaging parts for preventing misalignment >>
One of the contact member and the back member is provided with a deviation preventing projection, and the other of the contact member and the back member is provided with a deviation preventing engaging portion that can be engaged with the deviation preventing projection.
By pressing the slip prevention protrusion and the slip prevention engagement portion and engaging both, the contact member and the back member can be reliably displaced even when a person sits on a chair and a load is applied. Can be fixed.

-Protrusion for preventing displacement-
As long as the protrusion for preventing misalignment is provided on one of the contact member and the back member, the number, size, shape, structure, material, and the like are not particularly limited, and may be appropriately selected according to the purpose. Can do.
The number of the protrusions for preventing misalignment is preferably 1 or more, and more preferably 2 to 10. The shape of the deviation preventing projection is preferably formed in at least one of a linear shape, a curved shape, a dot shape, a planar shape, and a box shape, for example. As a result, the protrusion for preventing misalignment and the engaging part for preventing misalignment can be engaged with each other in any form of lines and lines, lines and points, curves and points, surfaces and surfaces, and surfaces and curves.
There is no restriction | limiting in particular about the magnitude | size of the said protrusion part for a shift | offset | difference, According to the objective, it can select suitably.
Examples of the material of the protrusion for preventing misalignment include metal materials such as iron, aluminum, and stainless steel; and synthetic resins such as polycarbonate resin, polyvinyl chloride resin, polypropylene resin, ABS resin, FRP, and nylon. . Among these, polypropylene resin is particularly preferable from the viewpoints of moldability and strength.
If the synthetic resin is used as the material for the deviation preventing projection, even a complicated shape deviation preventing projection can be molded, and the contact member and the back member can be formed using a molding die. Can be integrally molded, enabling mass production.

−Anti-engagement part−
As long as the engagement portion for preventing displacement is provided on one of the contact member and the back member, the number, size, shape, structure, material, and the like are not particularly limited, and are appropriately selected depending on the purpose. be able to.
As the number of the engaging portions for preventing displacement, one or more is preferable, and two to ten is more preferable. The shape of the engagement portion for preventing displacement is preferably formed, for example, in at least one of a linear shape, a curved shape, a dot shape, a surface shape, and a box shape. As a result, the protrusion for preventing misalignment and the engaging part for preventing misalignment can be engaged with each other in any form of lines and lines, lines and points, curves and points, surfaces and surfaces, and surfaces and curves.
There is no restriction | limiting in particular about the magnitude | size of the said engagement part for prevention of a shift | offset | difference, According to the objective, it can select suitably.
Examples of the material of the engaging portion for preventing displacement include metal materials such as iron, aluminum, and stainless steel; and synthetic resins such as polycarbonate resin, polyvinyl chloride resin, polypropylene resin, ABS resin, FRP, and nylon. It is done. Among these, polypropylene resin is particularly preferable from the viewpoints of moldability and strength.
If a synthetic resin is used as the material for the engagement portion for preventing displacement, even the engagement portion for preventing displacement that has a complicated shape can be molded, and the contact member and the back surface can be formed using a molding die. Can be molded integrally with the member, enabling mass production.

  The misalignment preventing protrusion and the misalignment preventing engaging portion may be anything that can be engaged with each other. Specifically, the boss and the boss hole, the round snap, the square snap, and the one push clip. , Etc.

-Other components-
There is no restriction | limiting in particular as said other member, According to the objective, it can select suitably, For example, a leg part, a caster, an armrest part etc. are mentioned.

In the chair of the present invention, when the contact member and the back member are attached, any one of the contact member and the back member that can engage the protrusion provided on either the contact member or the back member with the protrusion. By pushing into the engaging portion provided on the contact portion, the projecting portion and the engaging portion are engaged, and the contact member and the back member can be easily and reliably attached. On the other hand, when removing the contact member and the back member, the engagement state between the protrusion and the engagement portion can be released by sliding the protrusion in a direction substantially orthogonal to the protrusion direction of the protrusion, and the contact member and the back member are damaged. It can be easily removed without
Further, when one of the contact member and the back member is provided with a deviation preventing projection, and the other of the contact member and the back member is provided with a deviation preventing engaging portion that can be engaged with the deviation preventing projection. When a person sits on the chair and a load is applied, it is possible to reliably prevent at least one of the contact member and the back member from shifting.
In this case, when removing the contact member and the back member, first, the engagement state between the misalignment preventing projection and the misalignment preventing engagement portion is released, and then the back member is moved in the projecting direction of the projecting portion. By sliding in a substantially orthogonal direction, the engaged state between the protruding portion and the engaging portion can be released, and the contact member and the back member can be easily removed without being damaged.

  The chair of the present invention has a contact member (for example, a back support member, a seat member, etc.) with which a person who sits contacts, and a back member (for example, a back support member, a seat back member, etc.) on the back as viewed from the contact side. Easy to attach and remove, for example, office chairs, office chairs, home chairs and other swivel chairs; banquet chairs, restaurant chairs, store chairs, conference room chairs and other pipe chairs (non-rotating chairs) It is suitably used for various chairs such as side chairs, rocking chairs, and reclining chairs.

  Hereinafter, although an example of the present invention is described concretely using a drawing, the present invention is not limited to this example at all.

(First embodiment)
A first embodiment of the chair of the present invention will be described.
1A is a plan view showing a back support member 1 as a back member of the chair of the first embodiment, FIG. 1B is a cross-sectional view of the back support member 1 taken along line AA, and FIG. 1C is a back support. The enlarged view of the protrusion part 3 of the back member 1, FIG. 1D represents another enlarged view of the protrusion part 3 of the back support member 1, respectively.
FIG. 2A is a plan view showing the back support member 2 as the contact member of the chair according to the first embodiment, and FIG. 2B is a cross-sectional view taken along line BB of the back support member 2 as the contact member of the chair according to the first embodiment. 2C is an enlarged view of the engaging portion 4 of the back support member 2, and FIG. 2D is another enlarged view of the engaging portion 4 of the back support member 2.
FIG. 3 is a schematic cross-sectional view showing a state in which a back support member 1 as a back member of the chair of the first embodiment and a back support member 2 as a contact member are attached via a connecting member 8.
FIG. 4A is a perspective view showing a state in which the back support member 1 is attached to the back support member 2 in the chair of the first embodiment.
FIG. 4B is a perspective view illustrating a state in which the back support member 1 is removed from the back support member 2 of the chair of the first embodiment.
FIG. 5A is a perspective view showing a state in which the seat back member 21 is attached to the seat member 22 in the chair of the first embodiment.
FIG. 5B is a perspective view showing a state in which the seat back member 21 is removed from the seat member 22 in the chair of the first embodiment.
The chair according to the first embodiment includes a back support member 2 and a seat member 22 as contact members, and a back support back member 1 and a seat back member 21 as back members.

-Back support-
As shown in FIG. 1A, the back support member 1 has a substantially quadrangular shape in a plan view made of polypropylene resin, a total of five protrusions 3 at the four corners and the central upper part, and one misalignment preventing protrusion at the central lower part. 5.
As shown in FIG. 2A, the back support member 2 has a substantially quadrangular shape in a plan view made of polypropylene resin, and has a total of five engaging portions 4 at the four corners and the central upper portion.
As shown in FIG. 3, the back support member 2 has an outer skin 9 and a cushioning material 10 on the surface on the side on which a seated person comes into contact. In the first embodiment, the outer skin 9 is made of a cloth made of chemical fiber, and the cushion material 10 is made of polyurethane.

As shown in FIG. 1B, the protruding portion 3 is made of polypropylene resin, is integrally formed with the back support member 1, and can be elastically deformed inward and outward because the tip portion is branched into two.
As shown in FIG. 1C, the protruding portion 3 includes an inner protruding piece 3a that engages with the engaging portion 4, and an outer protruding piece 3b.
As shown in FIG. 1C, the protruding portion 3 is reinforced from both sides by a rib 14 to ensure strength.

The engaging portion 4 is made of polypropylene resin as shown in FIG. 2B, is integrally formed with the back support member 2, and has a box shape having an opening 4c in the lower engaging wall as shown in FIG. 2C. It is.
As shown in FIG. 2C, the engaging portion 4 is slid in a direction substantially perpendicular (downward) to the protruding direction of the protruding portion 3, and can be detached from the protruding portion 3. And a wall 4b.
The inner engaging wall 4 a of the engaging portion 4 can be engaged with the inner protruding piece 3 a of the protruding portion 3. The outer engaging wall 4 b of the engaging portion can be engaged with the outer protruding piece 3 b of the protruding portion 3.
As shown in FIG. 2C, the engaging portion 4 is reinforced from both sides by a rib 15 to ensure strength.

As shown in FIG. 2C, the protruding portion 3 and the engaging portion 4 have the lower engaging wall of the box-shaped engaging portion 4 as an opening 4c. At the time of detachment, the back support member 2 and the back support member 1 can be easily removed by sliding the protrusion 3 in the direction substantially perpendicular to the protrusion direction (downward direction) to release the engaged state.
In addition, if the opening part 4c provided in the lower engaging wall of the engaging part 4 is a direction substantially orthogonal to the protruding direction of the protruding part 3, the upward direction, the downward direction, the right direction, the left direction, and other It can be slidable in various directions and can be provided on the upper engagement wall, the right engagement wall, the left engagement wall, the upper and lower engagement walls, the right and left engagement walls, and the like.

Moreover, the protrusion part 3 is asymmetrical as shown to FIG. 1D, and can give a round (R) to the outer side protrusion piece 3b. Further, as shown in FIG. 2D, the engaging portion 4 that engages with the protruding portion 3 has an asymmetrical shape, and the outer engaging wall 4b that engages with the outer protruding piece 3b also has a round (R). Can do. By providing the round (R) in this way, when the back support member 2 and the back support member 1 are attached, the protrusion can be engaged along R, and positioning is facilitated. In this first embodiment, the radius of curvature of R (R) is 50R.
In addition, although illustration is abbreviate | omitted, give R (R) to the inner side protrusion piece 3a. The inner engaging wall 4a that engages with the inner protruding piece 3a may also have R.

As shown in FIG. 4A, the misalignment preventing projection 5 provided on the back support back member 1 engages with the misalignment preventing engagement portion 11 provided on the connecting member 8 that connects the back support and the seat. doing. Thereby, even if a person sits on a chair and a load is applied, the back support member 1 and the back support member 2 are securely fixed so as not to be displaced. Note that a round snap or a square snap may be used as the misalignment preventing projection 5 and the misalignment preventing engaging portion 11.
The connecting member 8 is a substantially square pipe made of steel, and is fixed to the screw hole 6 of the back support member 2 with screws 7 as shown in FIGS. 3 and 4A.

In the chair according to the first embodiment, as shown in FIG. 4A, when the back support member 2 and the back support member 1 are attached, the back support member 1 is placed in the direction of arrow A with respect to the back support member 2. By pressing and engaging the protruding portion 3 provided on the back support back member 1 and the engaging portion 4 provided on the back support member 2, both can be easily and reliably attached.
Further, the back support member 1 is provided with a shift preventing projection 5, and a connecting member 8 that connects the back support and the seat is provided with a shift preventing engagement portion 11 that can be engaged with the shift preventing projection 5. Since the displacement preventing projection 5 is engaged with the displacement preventing engaging portion 11, the back support member 2 and the back support member 1 can be connected to each other even when a load is applied to a person sitting on a chair. Misalignment can be reliably prevented.
As shown in FIG. 4B, when removing the back support member 2 and the back support member 1, first, the engagement state between the displacement prevention protrusion 5 and the displacement prevention engagement portion 11 is released, and then By sliding the back support member 1 in a direction substantially perpendicular to the protruding direction of the protruding portion 3 (downward, in the direction of arrow B in FIG. 4B), the engaged state between the protruding portion 3 and the engaging portion 4 is released. The back support member 2 and the back support member 1 can be easily removed without damage.

-Seat-
The seat part of 1st Example has the seat member 22 as a contact member, and the seat back member 21 as a back member, as shown to FIG. 5A.
As shown in FIG. 5A, the seat member 22 has an outer skin 25 and a cushion material (not shown) on the surface on the side on which a seated person comes into contact. In the first embodiment, a cloth made of chemical fiber is used as the outer skin 25, and polyurethane is used as a cushioning material.

As shown in FIG. 5A, the seat back member 21 is provided with a total of five protrusions 3 and two shift prevention protrusions 23.
The protruding portion 3 is made of polypropylene resin and is integrally formed with the seat back member 21, and as shown in FIG. 1B, the tip portion branches to have an inner protruding piece 3a and an outer protruding piece 3b. And can be elastically deformed in the inner and outer directions.
As shown in FIG. 5A, the protruding portion 3 is reinforced from both sides by ribs 17 to ensure strength.
In addition, about the other point of the protrusion part 3 of the seat back member 21, since it is the same as that of the protrusion part 3 of the back support member 2, the description is abbreviate | omitted.

As shown in FIG. 5A, the seat member 22 is provided with a total of five engaging portions 4 that can be engaged with the protruding portion 3 of the seat back member 21 and two misalignment preventing engaging portions 24. .
The engaging portion 4 is made of polypropylene resin, is integrally formed with the seat member 22, has a box shape having an opening 4 c as shown in FIG. 2C, and engages with the inner protruding piece 3 a of the protruding portion 3. It has the inner side engagement wall 4a and the outer side engagement wall 4b engaged with the outer side protrusion piece 3b of a protrusion part.
As shown in FIG. 5A, the engaging portion 4 of the seat member 22 is reinforced from both sides by the rib 16 to ensure strength.
In addition, about the other point of the engaging part 4 of the seat member 22, since it is the same as that of the engaging part 4 of the back support member 2, description is abbreviate | omitted.

  As shown in FIG. 5A, the displacement preventing projection 23 of the seat back member 21 can be engaged with the displacement preventing engagement portion 24 of the seat member 22.

In the chair of the first embodiment, as shown in FIG. 5A, when the seat member 22 and the seat back member 21 are attached, the seat back member 21 is pressed against the seat member 22 in the direction of arrow C in the figure. By engaging the protruding portion 3 provided on the seat back member 21 and the engaging portion 4 provided on the seat member 22, both can be easily and reliably attached.
Further, since the seat back member 21 is provided with the deviation preventing projection 23 and the seat member 22 is provided with the deviation preventing engaging portion 24 that can be engaged with the deviation preventing projection 23, the deviation preventing projection 24 is provided. The engagement between the seat member 22 and the seat back member 21 can be prevented even when a person is seated on the chair and a load is applied by engaging the engagement member 23 with the engagement member 24 for preventing the displacement. In the first embodiment, round snaps are used as the protrusions for preventing misalignment and the engaging parts for preventing misalignment. In addition to the round snap, a square snap may be used.
As shown in FIG. 5B, when removing the seat member 22 and the seat back member 21, first, the engagement state between the misalignment preventing projection 23 and the misalignment preventing engagement portion 24 is released, and then the seat back surface. By sliding the member 21 in a direction substantially orthogonal to the protruding direction of the protruding portion 3 (forward direction, arrow D direction in FIG. 5B), the engaged state between the protruding portion 3 and the engaging portion 4 is released, and the seat member 22 The seat back member 21 can be easily removed without damaging it.

(Second embodiment)
FIG. 6A is a plan view showing a back support member 1 as a back member of the chair of the second embodiment, and FIG. 6B is a plan view showing a back support member 2 as a contact member of the chair of the second embodiment. .
The second embodiment is the same as the first embodiment except that the back support member and the back member of the back are slightly longer than the back support member and the back member of the first embodiment. Yes, the description of common parts is omitted.
In this second embodiment, the back support back member 1 has a displacement preventing projection 5, and the displacement preventing engagement portion that engages with the displacement preventing projection 5 is connected to the back receiving portion and the seat portion. The connecting member (not shown) has a back-preventing member 2 even when a person sits on a chair and a load is applied by engaging the slip-preventing protrusion 5 and the slip-preventing engaging portion. And the shift | offset | difference of the back support back member 1 can be prevented reliably.
In the chair of the second embodiment, when the back support member 2 and the back support member 1 are attached, the back support member 1 is pressed against the back support member 2 to be provided on the back support member 1. By engaging the protruding portion 3 and the engaging portion 4 provided on the back support member 2, both can be easily and reliably attached.
On the other hand, when the back support member 2 and the back support member 1 are removed, the shift preventing projection 5 provided on the back support member 1 and the anti-shift engagement provided on the connecting member (not shown). The engagement state with the portion is released, and then the back support member 1 is slid relative to the back support member 2 in a direction substantially orthogonal to the protruding direction of the protruding portion 3 (downward in FIGS. 6A and 6B). The engagement state between the protruding portion 3 and the engagement portion 4 is released, and the back support member 2 and the back support member 1 can be easily removed without damaging them.

(Third embodiment)
FIG. 7A is a plan view showing a back support member 1 as a back member of the chair of the third embodiment, and FIG. 7B is a plan view showing a back support member 2 as a contact member of the chair of the third embodiment. .
The third embodiment is the same as the first embodiment except that back support members and back support members having larger shapes than the back support members and back support members of the first embodiment are used. The description of common parts is omitted.
In the third embodiment, a deviation preventing projection 12 is provided at the lower part of the back support member 1, and the deviation preventing engaging part 13 that engages with the deviation preventing projection 12 is provided at the lower part of the backing member 2. Even when a person sits on a chair and a load is applied, the back support member 2 and the back support member 1 are supported by engaging the misalignment preventing protrusion 12 and the misalignment preventing engaging portion 13. Can be reliably prevented. In the third embodiment, round snaps are used as the protrusions for preventing misalignment and the engaging parts for preventing misalignment. In addition to the round snap, a square snap may be used.

In the chair of the third embodiment, when the back support member 2 and the back support member 1 are attached, the back support member 1 is pressed against the back support member 2 to be provided on the back support member 1. By engaging the protruding portion 3 and the engaging portion 4 provided on the back support member 2, both can be easily and reliably attached.
When removing the back support member 2 and the back support member 1, first, the engagement state between the misalignment prevention protrusion 5 and the misalignment prevention engagement portion 11 is released, and then the back support member 1 protrudes. By sliding in a direction substantially orthogonal to the protruding direction of the portion 3 (downward in FIGS. 7A and 7B), the engaged state between the protruding portion 3 and the engaging portion 4 is released, and the back support member 2 and the back of the back support The member 1 can be easily removed without damaging it.

(Fourth embodiment)
FIG. 8 is a perspective view showing how the seat member and the seat back member of the fourth embodiment are attached.
In the fourth embodiment, the first embodiment is different from the first embodiment except that the number of protrusions 3 provided on the seat back member 21 and the number of engaging portions 4 provided on the seat member 22 are reduced from five to three. It is the same as the seat member and the seat back member in the example, and the description of the common parts is omitted.

In the chair of the fourth embodiment, as shown in FIG. 8, when the seat member 22 and the seat back member 21 are attached, the seat back member 21 is pressed against the seat member 22, and the seat back member 21 is pressed. By engaging the protruding portion 3 provided and the engaging portion 4 provided on the seat member 22, both can be easily and reliably attached.
Further, since the seat back member 21 is provided with the deviation preventing projection 23 and the seat member 22 is provided with the deviation preventing engaging portion 24 that can be engaged with the deviation preventing projection 23, the deviation preventing projection 24 is provided. The engagement between the seat member 22 and the seat back member 21 can be prevented even when a person is seated on the chair and a load is applied by engaging the engagement member 23 with the engagement member 24 for preventing the displacement. In the fourth embodiment, round snaps are used as the protrusions for preventing misalignment and the engaging parts for preventing misalignment. In addition to the round snap, a square snap may be used.
When removing the seat member 22 and the seat back member 21, first, the engagement state between the misalignment preventing projection 23 and the misalignment preventing engagement portion 24 is released, and then the seat back member 21 with respect to the seat member 22. Is slid in a direction substantially orthogonal to the projecting direction of the projecting portion 3 (the front direction in FIG. 8) to release the engaged state between the projecting portion 3 and the engaging portion 4, and the seat member 22 and the seat back member It can be easily removed without damaging 21.

  As mentioned above, although the chair of this invention was demonstrated in detail, this invention is not limited to the said Example, You may change variously in the range which does not deviate from the summary of this invention.

  The chair of the present invention has a contact member (for example, a back support member, a seat member, etc.) with which a person who sits contacts, and a back member (for example, a back support member, a seat back member, etc.) on the back as viewed from the contact side. Easy to attach and remove, for example, office chairs, office chairs, home chairs and other swivel chairs; banquet chairs, restaurant chairs, store chairs, conference room chairs and other pipe chairs (non-rotating chairs) It can be suitably used for various chairs such as side chairs, rocking chairs, and reclining chairs.

DESCRIPTION OF SYMBOLS 1 Back support member 2 Back support member 3 Protrusion part 3a Inner protrusion piece 3b Outer protrusion piece 4 Engagement part 4a Inner engagement wall 4b Outer engagement wall 4c Opening part 5 Deviation prevention protrusion part 6 Screw hole 7 Screw 8 Connection Member 9 Cover (cover)
DESCRIPTION OF SYMBOLS 10 Cushion material 11 Misalignment prevention engagement part 12 Misalignment prevention projection part 13 Misalignment prevention engagement part 14 Rib 15 Rib 16 Rib 17 Rib 21 Seat back member 22 Seat member 23 Misalignment prevention projection part 24 Misalignment prevention engagement Part 25 Skin (cover)

Claims (6)

A chair having a contact member that a seated person makes contact with and a back member on the back as viewed from the contact side, wherein one of the contact member and the back member has an elastically deformable protrusion that is the contact member or the provided by integral molding on the back member, and projecting portion and the removable engagement portion is provided to slide in the protruding direction substantially perpendicular direction of the projecting portion on the other of said contact member and said back member,
When reassembling the contact member and the back member, the protrusion provided on the back member or the back member is pressed against the contact member in a direction opposite to the protruding direction. The chair , wherein the engaging portion is engaged with the engaging portion or the protruding portion provided on the contact member . One of the contact member and the back member is provided with a deviation preventing projection, and the other of the contact member and the back member is provided with a deviation preventing engagement portion that can be engaged with the deviation preventing projection. Item 1. The chair according to Item 1. The chair according to claim 1, wherein the contact member is a back support member, and the back member is a back support back member. The chair according to claim 1, wherein the contact member is a seat member, and the back member is a seat back member. Between the back support member and the back support back member, there is a connecting member for connecting the back support portion and the seat portion,
  A displacement prevention projection is provided on either the back support member or the back support member, and a displacement prevention engagement portion that can be engaged with the displacement prevention protrusion is provided on the connecting member. Item 4. The chair according to item 3. The chair according to any one of claims 1 to 5, wherein the protrusion has an asymmetric shape.