CN106108452A - Chair - Google Patents

Abstract

The invention discloses the chair of a kind of health.The present invention includes: a kind of chair, including supporting seat, backrest, link and the seat board taken for user, described backrest is located on described support seat by described link, it is characterized in that: described backrest includes the back contact section for supporting back, for supporting the waist contact-segment of waist and connecting the changeover portion of described back contact section and waist contact-segment, in described changeover portion, predeterminated position is rotatably connected on described link by rotational structure；Under external force, described backrest can turn clockwise from preset state around described rotational structure；After external force disappears, described backrest returns to preset state.

Description

Chair

technical field

The invention relates to a chair, in particular to a chair used in a work or study environment.

Background technique

Chairs are indispensable furniture in people's daily office and life. According to the material, they can be divided into solid wood chairs, iron chairs, plastic chairs, fabric chairs, leather chairs, etc. According to the occasion of use, office chairs, dining chairs, bar chairs, leisure chairs, etc.

The backrests of existing chairs used for work and chairs used for learning are basically fixed and inactive. In this way, when the user sits for a long time, the buttocks tend to move forward for a certain distance. At this time, if the body leans against the back of the chair again, there will be a large gap in the waist of the user, and the lumbar spine is in a suspended state. When the lumbar spine is in a suspended state, it is very unfavorable to the health of the lumbar spine of the human body. If this is the case for a long time, intervertebral discs are prone to herniation and even fall off, which affects human health.

Contents of the invention

According to the deficiencies in the prior art, the technical problem solved by the present invention is to provide a healthy chair.

1. In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is: a chair, including a support seat, a backrest, a connecting frame and a seat plate for the user to sit on, and the backrest is erected on the support seat through the connection above, it is characterized in that: the backrest includes a back contact section for supporting the back, a waist contact section for supporting the waist, and a transition section connecting the back contact section and the waist contact section, and the transition section is preset The position is rotatably connected to the connecting frame through the rotating structure; under the action of external force, the backrest can rotate clockwise around the rotating structure from the preset state; after the external force disappears, the backrest returns to the preset state.

2. The chair according to claim 1, wherein the seat plate is arranged on the connecting frame, the seat plate includes a substantially horizontal seating portion for the user to sit on and slopes downward along the direction in which the user sits. The slope part is located at the rear of the user's riding direction, and the slope part is located at the front of the user's riding direction.

3. The chair according to claim 1, wherein the seat plate is arranged on the support seat, the seat plate includes a substantially horizontal seating portion for a user to sit on and a seat portion inclined downward along the direction in which the user sits. The slope part is located at the rear of the user's riding direction, and the slope part is located at the front of the user's riding direction.

4. The chair according to claim 2 or 3, characterized in that: the range of the acute angle formed between the slope portion and the horizontal plane is greater than 6° and less than 25°.

5. The chair according to claim 4, wherein the range of the acute angle is 7°-15°.

6. The chair according to claim 5, wherein the acute angle is 12° or 13° or 14° or 15°.

7. The chair according to claim 2 or 3, characterized in that: the seat part is half to two-thirds of the seat plate; the rest is the slope part.

8. The chair according to claim 7, characterized in that: said seating part occupies substantially half of said seat board; or said seating part occupies substantially two-thirds of said seat board.

9. The chair according to claim 1, characterized in that: the support seat also has a lifting adjustment mechanism, the seat plate and the connecting frame are both arranged on the lifting adjustment mechanism, and the lifting adjustment mechanism is used to adjust The height of the seat board and the backrest from the ground.

10. The chair according to claim 9, characterized in that: the lifting and adjusting mechanism is a pneumatic lifting column or a screw lifting mechanism or a lifting mechanism in which the adjusting piece is fastened to the lifting rod or a lifting mechanism in which the latch cooperates with the porous structure .

11. The chair according to claim 1, further comprising armrests, said armrests being located on both sides of said seat plate.

12. The chair according to claim 1, characterized in that: a reset mechanism is provided on the rotating structure between the backrest and the connecting frame, and the reset mechanism keeps the backrest at the position when no external force is applied. default state.

13. The chair according to claim 13, characterized in that: the reset mechanism includes a torsion spring, the torsion spring keeps the backrest at a preset position, and a damping structure is provided in the rotating structure, the The damping structure makes the backrest slowly rotate and reset around the rotating structure when it is reset.

14. The chair according to claim 1, wherein the width of at least the transition section in the backrest is greater than the width of the interference section in the connecting frame, and the interference between the transition section and the interference section makes The backrest remains in a preset state when no external force is applied.

15. The chair according to claim 1, wherein the height of the axis of the rotating structure from the seat plate is 320MM-380MM.

16. The chair according to claim 1, wherein both the backrest and the seat are provided with cushions.

17. The chair according to claim 1, wherein the surface of the backrest in contact with the back and waist of the human body is set in the shape of a normal physiological curve of the human body.

18. The chair according to claim 1 or 17, wherein the center of gravity of the backrest is located below the rotating structure, and the gravity of the backrest keeps the backrest at the predetermined position when no external force acts. set state.

19. The chair according to claim 1, characterized in that: said supporting base is provided with rollers suitable for sliding on the ground.

The main beneficial effects of the present invention are: since the connection transition section between the back contact section and the waist contact section is rotatably connected to the connecting frame through a rotating structure, the backrest can rotate around the The structure rotates clockwise from the preset state, so when the user's back rests on the backrest, the backrest rotates around the axis of the rotating structure, and the waist contact section can support the user's waist to prevent the lumbar spine from being injured. force.

Other beneficial effects of the present invention will be further described in specific embodiments.

Description of drawings

Fig. 1 is a structural perspective view of a preferred embodiment of the chair;

Fig. 2 is a schematic diagram of the shape of the backrest in Fig. 1;

Fig. 3 is a schematic diagram of the shape of the seat plate in Fig. 1;

Fig. 4 is the front view of chair among Fig. 1;

Fig. 5 is the right view of chair among Fig. 1;

Fig. 6 is the front view of rotating structure;

Fig. 7 is the A-A sectional view of rotating structure;

Figure 8 is an exploded view of Figure 7

Fig. 9 is a schematic diagram of the backrest rotating at a certain angle under external force.

detailed description

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings. It should be understood that the specific embodiments described in this section are only used to explain the present invention, not to limit the present invention.

Specific embodiment one

As shown in FIG. 1 , the preferred embodiment discloses a chair 100 comprising a support base 110 , a backrest 120 , a connecting frame 130 and a seat plate 140 for a user to sit on. In this embodiment, the connecting frame 130 is arranged on the supporting seat 110 , and the backrest 120 and the seat board 140 are both arranged on the supporting seat 110 through the connecting frame 130 . As shown in Figure 2, the backrest 120 includes a back contact section 121 for supporting the back, a lumbar contact section 122 for supporting the waist, and a transition section 123 connecting the back contact section 121 and the lumbar contact section 122. The set position is rotatably connected to the connecting frame 130 through the rotating structure 131 . As shown in FIG. 9 , under the action of external force, the backrest 120 can rotate clockwise around the rotating structure 131 from the preset state (as shown in FIG. 2 ); after the external force disappears, the backrest 120 returns to the preset state. Wherein, the preset state of the backrest 120 refers to a relatively comfortable position state where the human body rests on the backrest 120 when the human body is sitting normally. For example: the angle formed by the backrest 120 and the vertical plane is 3° or 6°; in a more comfortable position, the angle formed by the backrest 120 and the vertical plane is preferably in the range of 3°-10°. In other embodiments, the seat plate 140 may also be directly disposed on the supporting seat 110 without the connecting frame 130 .

In the prior art, the entire chair surface for people to sit on is basically parallel to the horizontal plane. This kind of chair with the chair surface parallel to the horizontal plane is likely to compress the arteries close to the human body's thighs and the chair surface, resulting in blood stagnation. Sitting for a long time affects the user's physical health. Therefore, as shown in Figure 3, the seat plate 140 includes a substantially horizontal seat portion 141 for the user to ride and a slope portion 142 inclined downward along the user’s riding direction, the seat portion 141 is located at the rear of the user’s riding direction, and the slope portion 142 is located in front of the user's riding direction. The acute angle formed between the slope portion 142 and the horizontal plane ranges from more than 6° to less than 25°. The seat part 141 and the slope part 142 are actually a general outline of the shape. According to actual needs, the seat part 141 can be set as a slightly concave plane for contacting the user's buttocks. The way also belongs to the substantially horizontal range described in the present invention; the slope portion 142 is also made into a small arc, and at this moment, the acute angle formed between the slope portion 142 and the horizontal plane is the high point and the bottom point of the slope portion 142 The angle formed between the line connecting the and the horizontal plane. Wherein, the user's riding direction refers to the direction that the user faces when sitting on the chair 100; front and rear refer to the user's riding direction, the user is facing the front, and the back is the rear.

Compared with the entire chair surface that is basically parallel to the horizontal plane, the downward slope portion 142 can make the seat plate 140 away from the arteries on the user's thigh better, so that the user's thigh can be placed in a natural state, which is beneficial to the user's health. In addition, when the user sits on the slope portion 142 that slopes downward, in order to prevent himself from sliding down the slope portion 142, he must stabilize his center of gravity so that he can sit comfortably. That is to say, the user's body can be kept straight for a long time, and the lumbar spine is in a normal physiological curve state, which has the advantage of preventing intervertebral disc herniation.

In this embodiment, the acute angle formed between the slope portion 142 and the horizontal plane is 14°. In other embodiments, the acute angle preferably ranges from 6° to 16° or preferably ranges from 7° to 15°. More preferably, the acute angle is set to 12° or 13° or 14° or 15°.

The seat portion 141 is preferably half to two-thirds of the seat plate 140 ; the rest is the slope portion 142 . In this embodiment, as shown in FIG. 3 , the seat portion 141 occupies substantially half of the seat plate 140 ; the slope portion 142 occupies approximately half of the seat plate 140 . For example, the total length of the seat plate 140 is 410MM, wherein the seat part 141 is 220MM, and the slope part 142 is 190MM.

As shown in FIG. 5 , the support base 110 also has a lifting adjustment mechanism 111 on which the connecting frames 130 are located. The lifting adjustment mechanism 111 is used to adjust the height of the seat board 140 and the backrest 120 from the ground. In this embodiment, the lifting adjustment mechanism 111 is a pneumatic lifting column, such as: ttps://www.baidu.com/s?ie=utf-8&f=3&rsv_bp=1&srcqid=91326601285215009&tn=50000022_hao_pg&wd=%E6%B0%94%E5 %8E%8B%E5%8D%87%E9%99%8D%E6%9F%B1&oq=%E6%B0%94%E5%8E%8B%E5%8D%87%E9%99%8D&rsv_pq=ed3cf049002c7e1b&rsv_t= 8ebbkZHn7QNHCiPGRMIvs0szHASgShFrCutqIQGXDEJG8cEolkAm7Gg0q5QLZcqpR%2BchM3FL&rqlang=cn&rsv_enter=0&inputT=3911&rsv_sug3=10&rsv_sug1=6&rsv_sug7=100&rsv_sug2=1&prefixsug=%E6%B0%94%E5%8E%8B%E5%8D%87%E9%99%8D&rsp=2&rsv_sug4=4716&rsv_sug=2的网址Link. The pneumatic lifting column can adjust the height of the seat board 140 and the backrest 120 from the ground by controlling the handle 112 . In other embodiments, the lifting adjustment mechanism 111 can also be a screw lifting mechanism or a lifting mechanism in which an adjusting member fastens a lifting rod, or a lifting mechanism in which a latch cooperates with a porous structure. The screw lifting mechanism can refer to the following website: https://www.baidu.com/s?ie=utf-8&f=8&rsv_bp=1&srcqid=91326601285215009&tn=50000022_hao_pg&wd=%E8%9E%BA%E6%9D%86%E5%8D %87%E9%99%8D%E6%9C%BA%E6%9E%84&oq=%E6%B0%94%E5%8E%8B%E5%8D%87%E9%99%8D&rsv_pq=ed3cf049002c7e1b&rsv_t=d2a0t3TTmfIN% 2FXeGNuzd%2BUESv%2BfyE8lRFA2jBOD%2Fc1Z9OE98wx08VlqsRW0u7ypaY1LKkPk2&rqlang=cn&rsv_enter=0&inputT=3911&rsv_n=2&bs=%E6%B0%94%E5%8E%8B%DE5%9D%9D%98%8%E The lifting mechanism for the bolt and the porous structure is as follows: the bolt matches the structure with multi-position holes, and the lifting or lowering is controlled by selecting the connection relationship between the bolt and the position holes. The elevating mechanism that the adjusting member fastens the elevating rod is composed of a sleeve, a connecting piece and a fastener that are movably inserted in the sleeve for realizing lifting. Wherein, the sleeve is provided with a notch, and the fastener is used to lock the notch to realize that the sleeve holds the connecting piece tightly and prevents the connecting piece from moving.

As shown in FIG. 4 , an armrest 150 is also included, and the armrest 150 is arranged on the connecting frame 130 , and the armrest 150 is located on both sides of the seat plate 140 . The armrest 150 , the seat board 140 and the backrest 120 are all arranged on the connecting frame 130 , and the lifting adjustment mechanism 111 can adjust the height of the connecting frame 130 from the ground as a whole. As shown in FIG. 5 , the supporting base 110 is provided with rollers 113 suitable for sliding on the ground.

As shown in Fig. 5 and Fig. 6, a reset mechanism 1311 is also provided on the rotating structure 131 between the backrest 120 and the connecting frame 130, and the reset mechanism 1311 keeps the backrest 120 in a preset state when no external force is applied. At least the width of the transition section 123 in the backrest 120 is greater than the width of the interference section 132 in the connecting frame 131 , and the interfering limiting effect of the transition section 123 and the interference section 132 keeps the backrest 120 in a preset state when no external force acts.

As shown in FIG. 7 and FIG. 8 , in this embodiment, the rotating structure 131 adopts a hinged implementation. The rotating structure 131 includes one end of the connecting frame 130 with a through hole 133, a fixing piece 1313 and a rotating shaft 1312 connected to the backrest 120, the rotating shaft 1312 is suitable for being inserted into the through hole 133 and connected to the fixing piece 1313, and the rotating shaft 1312 is suitable for fixing Free rotation on piece 1313. The reset mechanism 1311 is a torsion spring, which is sheathed on the rotating shaft 1312. One end of the torsion spring is fixed on the connecting frame 130, and the other end is fixed on the fixing member 1313. The torsion spring keeps the backrest 120 at a preset position. A damping structure 1314 is also provided in the rotating structure 131, and the damping structure 1314 makes the backrest 120 slowly rotate and reset around the rotating structure 131 when being reset. The setting of the damping structure 1314 can make the backrest 120 rotate to a certain angle, due to the damping effect of the damping structure 1314, the contact between the user's back and the backrest 120 can be in a relatively comfortable state.

According to the differences in the average height of the human body in each area, as a preferred solution, the height of the axis of the rotating structure 131 from the seat plate 140 is 320MM-380MM. As shown in Figures 2 and 4, in this embodiment, the height of the axis of the rotating structure 131 from the seat plate 140 is 150 mm; The position where the structure 131 is connected is approximately three-fifths of the position of the backrest 120 . The surface of the backrest 120 in contact with the back and waist of the human body is set to the shape of the normal physiological curve of the human body. The center of gravity of the backrest 120 is located below the rotating structure 131, and the gravity of the backrest 120 keeps the backrest 120 in a preset state when no external force is applied. In other embodiments, the backrest 120 and the seat board 140 can be provided with soft cushions to make people ride comfortably.

In this embodiment, since the connection transition section 123 between the back contact section 121 and the waist contact section 122 is rotatably connected to the connecting frame 130 through the rotating structure 131, under the action of an external force, the backrest 120 can rotate around the rotating structure 131 from the preset position. The state rotates clockwise, so when the user's back rests on the backrest 120, the waist contact section 122 can also support the user's waist through the rotation of the backrest 120 around the rotating structure 131, preventing the lumbar spine from being stressed. In addition, since the backrest 120 uses the principle of leverage when rotating clockwise under the action of force, when the resetting mechanism 1311 is provided in the rotating structure 131, the human body only needs a small force to rotate the backrest 120, so that the human body makes the backrest The 120 rotation becomes very natural and does not feel a lot of reaction force.

In other embodiments, the seat portion 141 may also account for substantially two-thirds of the seat plate 140 ; the slope portion 142 may account for approximately one-third of the seat plate 140 .

The above specific examples illustrate the principle and implementation of the present invention. It should be understood that the above implementation is only used to help understand the present invention, and should not be construed as a limitation of the present invention. For those skilled in the art, any minor improvements or equivalent substitutions made to the structural form or structure of the present invention according to the idea of the present invention shall be included within the protection scope thereof.

Claims (10)

1. a chair, including supporting seat, backrest, link and the seat board taken for user, described backrest is by described connection It is set up on described support seat, it is characterised in that: described backrest includes the back contact section for supporting back, for backing up The waist contact-segment in portion and connect the changeover portion of described back contact section and waist contact-segment, presets position in described changeover portion Put and be rotatably connected on described link by rotational structure；Under external force, described backrest can be around described rotational structure Turn clockwise from preset state；After external force disappears, described backrest returns to preset state.

Chair the most according to claim 1, it is characterised in that: described seat board is located on described link, described seat board bag Include the carriage part taken for user of basic horizontal and along the downward-sloping ramp portion of user's seat direction, described carriage portion Dividing the rear being positioned at user's seat direction, described ramp portion is positioned at the front of user's seat direction.

Chair the most according to claim 1, it is characterised in that: described seat board is located on described support seat, described seat board bag Include the carriage part taken for user of basic horizontal and along the downward-sloping ramp portion of user's seat direction, described carriage portion Dividing the rear being positioned at user's seat direction, described ramp portion is positioned at the front of user's seat direction.

4. according to the chair described in Claims 2 or 3, it is characterised in that: formed between described ramp portion and horizontal plane is sharp Angle range is more than 6 ° and less than between 25 °.

Chair the most according to claim 4, it is characterised in that: described acute angle scope is at 7 °-15 °.

Chair the most according to claim 5, it is characterised in that: described acute angle is 12 ° or 13 ° or 14 ° or 15 °.

7. according to the chair described in Claims 2 or 3, it is characterised in that: described carriage part is that described seat board half is to three points Two part；Remaining is then described ramp portion.

Chair the most according to claim 7, it is characterised in that: described carriage part accounts for the ratio of described seat board half substantially Example；Or described carriage part accounts for the ratio of described seat board 2/3rds substantially.

Chair the most according to claim 1, it is characterised in that: described support seat also has lifting regulating mechanism, described seat Plate and link are all located on described lifting regulating mechanism, described lifting regulating mechanism for regulate described seat board and backrest from Ground level.

Chair the most according to claim 9, it is characterised in that: described lifting regulating mechanism is pressure liftable post or screw rod The elevating mechanism that elevating mechanism or the elevating mechanism of regulating part fastening elevating lever or latch match with multi-hole position structure.