JP2009078802A - Carrier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compactly foldable carrier having a sufficient carrying function during deployment. <P>SOLUTION: The carrier is provided with a carrier main body 2 having wheels and one shaft 3 extended from the carrier main body 2. The shaft 3 is provided with a plurality of shaft members 7 connected to each other so as to change their relative angles and lock members 9 engaged with the plurality of shaft members 7 and fixing them in the long state. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a carrier. More specifically, the present invention relates to a foldable carrier used for transporting various types of luggage.

  2. Description of the Related Art Conventionally, when going to purchase various items, it is widely performed to bring a carrier and transport the purchased item (package) using this carrier. In particular, some can be folded for the convenience of carrying.

  As such a foldable carrier, for example, a support frame that can be expanded and contracted in the height direction by sliding a plurality of frame members whose thickness is gradually reduced, a luggage support plate, and a wheel. There are known carriers in which these are foldable (see, for example, Patent Document 1). Also, there is a carrier that includes a support column that is foldable in three parts, an upper part, an intermediate part, and a lower part that are connected via a hinge member, and a luggage storage part, a wheel, and a support pillar, and these can be folded. (For example, refer to Patent Document 2).

Japanese Unexamined Patent Publication No. 63-22765 JP 2003-81094 A

  By the way, if more portability is required, it is preferable to make the carrier folded as compact as possible. However, although the carrier described in Patent Document 1 and Patent Document 2 can be accommodated in a large bag, it cannot be sufficiently stored in a relatively small handbag.

For example, in a carrier as described in Patent Document 1, if the length of the support frame when stretched is kept constant and it is intended to be folded more compactly, the length of the plurality of frame members is shortened. In addition, it is necessary to increase the number of stages. However, in such a configuration, the innermost frame member located in the upper part (near the handle) becomes considerably thinner than the outermost frame member located in the lower part (near the wheel) when extended. . Such a support frame is not only problematic in terms of strength, but also looks bad. Therefore, there is a limit to making the folded state compact.
In addition, even with a carrier of the type that folds the support column as described in Patent Document 2 with a hinge member, if the extension length of the entire support column is kept constant and it is attempted to be folded more compactly, what is the support column in the same manner? It must be divided into stages. However, in such a configuration, even if the length when folded is shortened, the thickness increases accordingly. Therefore, there is a limit to making the folded state compact.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a carrier that can be folded compactly and has a sufficient transport function when deployed.

  A first characteristic configuration of a carrier according to the present invention includes a carrier body provided with wheels and a single shaft extending from the carrier body, and the shafts are connected to each other so that the relative angle can be changed. And a lock member that engages over the plurality of shaft members and fixes the plurality of shaft members in a long state.

According to this characteristic configuration, the shaft can be folded in a compact manner by changing the relative angles of the shaft members constituting the shaft and arranging the shaft members in parallel. Therefore, the entire carrier is made compact and easy to store in the bag.
Since the shaft members having the same size and thickness are only connected so that the relative angle can be changed, when the shaft members are extended, it is possible to obtain a single shaft having a constant thickness. And since the lock member engaged over a some shaft member is provided, the elongate state of a shaft is stabilized.

  According to a second characteristic configuration of the present invention, the lock member is engaged between shaft members adjacent to each other among the plurality of shaft members, and one of the lock members is bent when the adjacent shaft members are in a bent state. When the shaft members are in a long state, the shaft members are inserted into both shaft members.

  According to this configuration, since the shaft is folded in a state where the lock member is inserted into any one of the adjacent shaft members, it is possible to fold the entire carrier in a compact manner while also securely storing the lock member. Become.

  According to a third characteristic configuration of the present invention, the lock member is engaged between shaft members adjacent to each other among the plurality of shaft members, and one of the lock members is bent when the adjacent shaft members are in a bent state. It is mounted on the outside of the shaft member, and when the shaft members are in a long state, they are mounted on the outside of both shaft members.

  According to this configuration, since the shaft is folded in a state in which the lock member is mounted on the outer side of any one of the adjacent shaft members, the entire carrier can be folded compactly while securely storing the lock member. Become. In addition, since the lock member is mounted on the outside of the shaft member, for example, the lock member can be moved between the adjacent shaft members only by sliding the lock member by its own weight or sliding the lock member with fingers. It is easy to operate the lock member, for example, it can be engaged with either one or both shaft members. For this reason, the shaft can be folded by a simple operation.

  According to a fourth characteristic configuration of the present invention, the carrier body includes a shaft connecting portion to which the shaft is connected and a support portion for placing and supporting a load, and the shaft connecting portion is integrated with the shaft. , Foldably connected to the support portion.

  According to this configuration, the entire carrier can be folded in a compact manner.

  According to a fifth characteristic configuration of the present invention, a pair of guide members disposed opposite to the shaft connecting portion is provided, and the shaft is accommodated by engaging the shaft member across both the guide members. is there.

  According to this configuration, the shaft can be easily housed by engaging the shaft member over both of these guide members.

  A sixth characteristic configuration of the present invention is that one of the adjacent shaft members is bent only on one side with respect to the other shaft member.

  According to this structure, a shaft can be folded only by bending the adjacent shaft member. Furthermore, since the folding direction of the shaft member is uniquely determined, the folding can be easily performed.

  The carrier 1 according to the present invention includes a carrier body 2 having two wheels 4 and a shaft 3 extending from the carrier body 2. The carrier 1 can be unfolded when transporting various kinds of luggage, and can be folded and carried when not in use. Is easy.

[First embodiment]
Below, 1st embodiment of the carrier 1 which concerns on this invention is described with reference to FIGS.
As shown in FIG. 1, the carrier 1 according to this embodiment is attached to a carrier body 2 having a support portion 5 and a shaft coupling portion 6, a shaft 3 extending from the carrier body 2, and a lower end of the carrier body 2. Wheels 4. Moreover, the auxiliary member 13 and the standing member 18 that are connected to the support portion 5, and the auxiliary arm 19 and the guide plate 20 that are provided to the shaft connecting portion 6 are provided. FIG. 2 shows the carrier body 2 in an enlarged manner.

The carrier body 2 is a part on which a load is placed, and a support portion 5 that supports the load of the load on the entire carrier 1 in the longitudinal direction of the shaft 3 and a shaft connection portion 6 to which the shaft 3 is connected and fixed. And have. The support part 5 and the shaft connection part 6 are made of, for example, a metal material such as an aluminum alloy or stainless steel, or a synthetic resin such as plastic, and the like, and a square material with a solid inside or a hollow pipe with a hollow inside. (Hereinafter, the same applies to all members except wheels).
In the present embodiment, both the support portion 5 and the shaft connection portion 6 are provided with a horizontally long U-shaped frame, and the support portion 5 and the shaft connection portion 6 are hinge-connected in the vicinity of both ends of the support portion 5. And can be folded. These are configured so that the outer shape of the shaft coupling portion 6 is folded along the inner edge of the support portion 5 and the U-shapes face each other in a completely folded state to form a rectangular frame as a whole. Yes.

  The support portion 5 is provided with an auxiliary member 13 that extends outward from the side on which the shaft 3 is provided, that is, from the side surface of the support portion 5 toward the rear side with respect to the traveling direction of the carrier 1. . The support portion 5 and the auxiliary member 13 are vertically connected by fitting a convex portion 14a provided at an end portion of the auxiliary member 13 and a concave portion 15a provided on a side surface of the support portion 5 (FIG. 8). Here, while the support part 5 and the joint member 17 are connected so that relative rotation is possible, the joint member 17 and the auxiliary member 13 are connected so that relative rotation is possible. The shaft connecting the joint member 17 and the auxiliary member 13 is constituted by a bolt and a wing nut 16a, and the shaft includes a long hole formed in the auxiliary member 13 and a round hole formed in the joint member 17. It penetrates. Thereby, the joint member 17 and the auxiliary member 13 are made slidable so that the convex portion 14a and the concave portion 15a can be fitted together, and after the fitting, the support portion 5 and the auxiliary member 13 are firmly fixed. It is like that. By providing this auxiliary member 13, even if the size of the support portion 5 is made as small as possible in order to make the folded state of the carrier 1 compact, the effective area that can actually support the load is large. Become. Therefore, it is possible to firmly support and carry a load having a relatively large bottom area. Note that the auxiliary member 13 can change its posture between a state of extending toward the rear side and a state of not extending through the joint member 17 in the traveling direction of the carrier 1. Therefore, compaction when the carrier 1 is folded is not hindered, and it is possible to select whether or not the auxiliary member 13 is extended according to the size of the luggage. In addition to the above-described configuration, the auxiliary member 13 may have a pin shape that extends by sliding from the inside of the support portion 5 or a plate shape that slides from a state where the auxiliary member 13 is housed in the lower portion of the support portion 5.

  Further, a standing member 18 is foldably provided at the lower portion of the support portion 5 on the side where the auxiliary member 13 is provided. In the present embodiment, one pin-shaped one is provided on each of the left and right sides, but only one pin-shaped one is provided at the center in the width direction of the support portion 5 or a plate-shaped one is provided. You may do it. The stance member 18 serves to keep the support portion 5 horizontal with respect to the ground when stationary in the deployed state. Accordingly, it is possible to easily load the load, and the posture of the carrier 1 is stabilized when stationary.

  An auxiliary arm 19 that extends further upward is provided at the upper end of the shaft connecting portion 6. In the present embodiment, the auxiliary arm 19 is partially housed inside the frame of the shaft coupling portion 6 and is configured to extend further upward from the upper end portion of the shaft coupling portion 6 by the biasing force of the spring 29. Yes (see FIG. 8). Since the auxiliary arm 19 partially receives a load applied in a direction perpendicular to the longitudinal axis of the shaft 3, the load applied to the shaft 3 can be reduced even when a relatively vertically long load is loaded. it can.

Guide plates 20 are provided on the front and rear surfaces of the opposite ends of the U-shaped frame of the shaft coupling portion 6 so as to extend further inward than at least the inner edge of the frame. ing. In the present embodiment, the guide plate 20 corresponds to a guide member. A gap 21 having the same width as that of the shaft 3 is formed between the guide plates 20 extending inward from the frame, and the shaft member 7 folded and juxtaposed can be stored in the gap 21. (See FIG. 8).
As a configuration in which the guide member and the shaft member 7 are engaged with each other, the cross section of the frame body of the shaft coupling portion 6 is formed into a substantially U-shape, and the shaft member 7 is engaged therebetween, or provided on the shaft coupling portion 6. Notches provided at both ends of the shaft member 7 can be engaged with the support column. In these examples, the frame itself having a substantially U-shaped cross section and the support column each correspond to a guide member.

  The shaft 3 includes a plurality of shaft members 7, a connecting member 8 that connects adjacent shaft members 7, and a locking member that engages the shaft members 7 to fix the shaft members 7 in a long state. 9 and. The connecting member 8 connects adjacent shaft members 7 so as to sandwich two opposite faces of the four faces of the shaft member 7 in parallel. The connecting member 8 is pivotally connected to the two shaft members 7 at both ends thereof, and the connecting member 8 and the shaft member 7 are rotated relative to each other around the shafts at both ends of the connecting member 8, thereby connecting the connected shaft members 7. The relative angle between the two can be changed.

  Of the shaft members 7, the one located at the end on the carrier body 2 side (hereinafter referred to as “terminal shaft member 7 a”) is connected to the shaft connecting portion 6. In this embodiment, these are connected so that relative displacement is possible by the link member 22 which has the structure similar to the connection member 8 which connects the shaft members 7 mutually. That is, the terminal shaft member 7a and the shaft connecting portion 6 are connected via the link member 22, and the fixed state and the fixed release state can be switched. FIG. 3 is an example for fixing the shaft 3 and the carrier body 2, (A) shows a fixed state, and (B) shows a fixed release state. A convex portion 14b is provided on the end portion of the end shaft member 7a on the side connected to the shaft connecting portion 6, and the shaft 3 is attached to the carrier body 2 by fitting into a concave portion 15b provided in the shaft connecting portion 6. It is fixed against. At this time, for example, the locking hole 23 is provided in the convex portion 14b, and the stopper 24 provided in the shaft connecting portion 6 is engaged with the locking hole 23, so that the shaft 3 is pulled out. Is prevented. If the concave portion 15b of the shaft connecting portion 6 is used as a fitting hole, and the portion of the convex portion 14b that protrudes through the fitting hole can be screwed with a wing nut 16b or the like, the shaft 3 and the carrier body 2 is preferable because it is securely fixed.

  In the present embodiment, the shaft member 7 that is located at the end on the other end side when viewed from the shaft connecting portion 6 (hereinafter referred to as “the other end side shaft member 7b” in the present specification) is adjacent to this. The shaft member 7 (hereinafter referred to as “adjacent shaft member 7 c”) is connected via the connecting member 8 in the same manner as the other shaft members 7, but in the long state of the shaft 3. These are not arranged in the longitudinal direction, but the other end side shaft member 7b is connected to the adjacent shaft member 7c perpendicularly to the longitudinal axis of the shaft 3 to form a T-shape. As shown in FIG. 4, the other end side shaft member 7b and the adjacent shaft member 7c are formed with a convex portion 14c provided on the upper end portion of the adjacent shaft member 7c and a concave portion 15c provided on the side surface of the other end side shaft member 7b. Are connected by fitting. In the present embodiment, the joint shaft 25 is configured to be slidable in the longitudinal direction of the shaft 3 so that the convex portion 14c and the concave portion 15c can be smoothly fitted, and the other end side shaft after the fitting. The joint shaft 25 of the connecting member 8 on the side of the adjacent shaft member 7c is composed of a bolt and a wing nut 16c so that the connection between the member 7b and the adjacent shaft member 7c can be firmly fixed. Thus, since the other end side shaft member 7b and the adjacent shaft member 7c form a T shape, the other end side shaft member 7b functions as a handle of the carrier body 2. Therefore, it is easy to carry the luggage with this handle.

  Further, the shaft 3 is provided with a hook 26 for locking a vinyl bag or a bag when shopping at a supermarket, for example. In the present embodiment, the hook is provided integrally with the shaft of the connecting member 8. The height at which the hook 26 is provided is not particularly limited, and may be configured to be detachable from the shaft 3 so that the mounting height can be changed. If such a hook 26 is provided, it is preferable because the load to be loaded is firmly fixed on the carrier body 2. In order to fix the baggage more firmly, the baggage should be attached to the carrier body with a rubber strap or the like.

  When the carrier 1 according to the present embodiment is used, a support plate 27 having a shape that substantially conforms to the outer shape of the support portion 5 is placed on the frame of the support portion 5, and a load is loaded thereon. It is preferable to do this. In this way, the load can be supported even when the load is smaller than the frame of the support portion 5, and the load of the load is received by the entire surface of the support plate 27. Can be firmly supported. Since the support plate 27 has a shape that substantially conforms to the outer shape of the support portion 5, the size of the carrier 1 in a folded state is substantially equal, and these can be carried together (FIG. 9). reference). At this time, if the folded carrier 1 and the support plate 27 are bonded together using the rubber string, they can be reliably carried together.

Now, the folding procedure of the carrier 1 having the above configuration will be described below.
FIG. 5 shows how the shape of the shaft 3 changes. (A) shows a first state, that is, a long state in which the shaft members 7 are sequentially arranged in the longitudinal direction, and (B) shows a state in which the shaft 3 is being folded. FIG. 6 shows a second state, that is, a state in which the shaft members 7 are juxtaposed. The shaft 3 is deformable between the first state and the second state.

  The first state is a long state in which the shaft members 7 are sequentially arranged in the longitudinal direction. At this time, a lock member 9 that engages between adjacent shaft members 7 is inserted into both shaft members 7 to fix the shaft member 7 in a long state. The lock member 9 also plays a role of increasing the strength against an external force from a direction perpendicular to the longitudinal axis of the shaft 3. Apart from this, the connecting member 8 is in a state of sandwiching the shaft member 7 across the adjacent shaft members 7 along the longitudinal direction of the shaft member 7, and in this state, the connecting member 8 is from the direction in which they face each other. It acts to increase the strength of the shaft 3 against external forces. Therefore, the shaft 3 has a great strength for its own thickness.

  The lock member 9 has a protrusion 10, and the protrusion 10 protrudes from the long hole 11 provided on the side surface of the shaft member 7 to the outside of the shaft member 7. The protrusion 10 and the lock member 9 may be integrally formed. By operating the protrusion 10 and sliding the lock member 9 within the shaft member 7, the lock member 9 is completely inserted into one of the shaft members 7. In this state, the relative angle between the shaft members 7 can be changed, and the folding of the shaft 3 is started. In the present embodiment, the lock member 9 is inserted under both the inside of the adjacent shaft member 7 by lowering until the protrusion 10 is positioned at the lower edge of the long hole 11 under its own weight in the first state. It has become. Further, when the user lifts the protrusion 10 against the gravity until it is positioned at the upper edge of the long hole 11, the lock member 9 is completely inserted into the upper shaft member 7. The folding of the shaft 3 proceeds by the relative rotation of the shaft members 7 connected by the connecting member 8 while maintaining the relative orientation in the longitudinal direction.

  The relative rotation of the shaft member 7 is completed when the side wall surfaces of the two shaft members 7 are in contact with each other, and the relative rotation of all the shaft members 7 is completed, whereby the folding of the shaft 3 is completed (FIG. 6). Here, on the surface of each shaft member 7 facing the surface on which the long hole 11 is provided, as shown in FIG. 7, a protrusion accommodating hole 12 is provided at a height corresponding to the upper edge of the long hole 11. The projections 10 are accommodated in the projection accommodating holes 12 so that the shaft members 7 are folded in the second state in which the shaft members 7 are in contact with each other at the surfaces. At this time, in this embodiment, the connecting member 8 is arranged in parallel with the shaft member 7 with the longitudinal axis having a certain angle.

Next, as shown in FIG. 8, in the second state in which the shaft members 7 are juxtaposed, the shaft 3 is engaged and accommodated in the gap 21 of the guide plate 20 provided in the shaft connecting portion 6. Here, since the shaft member 7 is engaged and sequentially accommodated across the gap 21 at both ends of the shaft connecting portion 6, the shaft 3 can be easily accommodated. Thereafter, the auxiliary member 13 and the stance member 18 are respectively folded, and finally, the support portion 5 and the shaft connecting portion 6 are folded, and the entire folding of the carrier 1 is completed.

  Note that when folding the support portion 5 and the shaft coupling portion 6, the user folds the auxiliary arm 19 against the elastic force of the spring 29 while completely accommodating the auxiliary arm 19 inside the frame of the shaft coupling portion 6. Then, in the folded state of the carrier 1, the auxiliary arm 19 is housed inside the frame of the shaft connecting portion 6 while being urged by the spring 29, so that the folding is performed with a slight impact during carrying. It is possible to prevent the state from being easily released.

  FIG. 9 shows a state in which the entire carrier 1 according to this embodiment is folded. In this embodiment, the carrier 1 having an overall height of the shaft 3 of about 75 cm and an effective width of the support portion 5 of about 20 cm in width and about 18 cm in length when unfolded is about 20 cm in width after being folded. About 13 cm (about 18 cm including the wheel 4) and a thickness of about 5 cm, it was confirmed that the shape was extremely compact.

[Second Embodiment]
Next, a second embodiment of the carrier 1 according to the present invention will be described with reference to FIGS.
Similar to the carrier 1 according to the first embodiment, the carrier 1 according to this embodiment also includes a carrier body 2 having a support portion 5 and a shaft coupling portion 6, a shaft 3 extending from the carrier body 2, and a carrier body 2. And a stance member 18 connected to the support portion 5. In the following, differences from the first embodiment will be mainly described.

As shown in FIG. 10, in this embodiment, the support part 5 and the shaft coupling part 6 are respectively a vertically long U-shaped frame and a rectangular frame.
The support portion 5 is provided with one pin-shaped standing leg member 18 at the center in the width direction. The stance member 18 rotates around the shaft rod 30 having a circular cross section installed between the opposite frames of the U-shaped frame constituting the support portion 5, thereby supporting the support portion 5. It can be stored. In the present embodiment, as shown in FIG. 11, the guide bar 31 provided in parallel with the shaft bar 30 and the standing member 18 are connected by a spring attached to the standing member 18, and no external force is applied. Then, the standing member 18 maintains a state of functioning as a leg of the carrier 1. At the time of storage, it is rotated against the elastic force of the spring and is locked using a locking piece 32 a provided on the support portion 5.
Wheels 4 are provided on the shaft connecting portion 6. The wheel 4 is attached to a member that is slidable inside the frame of the shaft coupling portion 6, and the wheel 4 itself is also slidable with respect to the shaft coupling portion 6. By sliding the wheel 4 to increase the distance between the two wheels 4, the running state when the carrier 1 is used can be stabilized.

  The shaft connecting portion 6 and the end shaft member 7a are connected in a completely fixed state. As in the first embodiment, the shaft 3 is compacted by being deformed between the first state and the second state. At this time, since the shaft connecting portion 6 and the end shaft member 7a are fixed, the shaft member 7 is sequentially juxtaposed on one side with respect to the end shaft member 7a. When all the shaft members 7 are folded and in the second state, the outer edge of the other end side shaft member 7b and the outer edge of the shaft connecting portion 6 are just overlapped with each other in the front view. It is preferable because the shaft member 7 can be locked by the locking piece 32b provided on the shaft and the shaft member 7 in the second state can be firmly fixed.

  FIG. 12 shows a state in which the entire carrier 1 according to the present embodiment is folded. Since the shaft connecting portion 6 is provided with a handle 33, carrying the handle 33 in an extremely compact folded state makes it very easy to carry. Further, the support plate 27 is folded with respect to the shaft connecting portion 6 integrally with the support portion 5 along the outer shape of the support portion 5. When the carrier 1 is used, it is possible to firmly support even a wide luggage by changing the direction of the support plate 27 by 90 degrees. The support plate 27 and the support portion 5 are provided with an engaging convex portion and an engaging concave portion, respectively, so that the above arrangement state can be taken stably. The support plate 27 may be disposed on either side of the support portion 5 with respect to the engagement recess.

[Third embodiment]
Next, a third embodiment of the carrier 1 according to the present invention will be described with reference to FIGS.
Similar to the carrier 1 according to the first and second embodiments, the carrier 1 according to this embodiment also includes a carrier body 2 having a support portion 5 and a shaft coupling portion 6, a shaft 3 extending from the carrier body 2, And a wheel 4 attached to the lower end of the carrier body 2.

  As shown in FIG. 14, the support portion 5 is spanned between a rectangular outer frame 41 and a short side portion 41 a of the outer frame 41, and two crosspieces 40 arranged at intervals in the short side direction. And. The support portion 5 is configured to be foldable by being hinge-connected to the shaft connecting portion 6 at a short side portion 41a thereof, and an upright posture (see FIG. 18) in which the support portion 5 contacts the side surface of the shaft connecting portion 6. The support portion 5 is configured to be switchable to a sideways posture (see FIG. 14) in which the support portion 5 contacts the upper surface of the shaft connecting portion 6. The shaft connecting portion 6 and the end shaft member 7a are connected in a completely fixed state.

  A gap for passing the shaft 3 is formed in the short side portion 41a of the outer frame 41 opposite to the shaft connecting portion 6 in order to switch the posture of the support portion 5 during folding described later. A connecting portion 46 is swingably attached to one side portion of the short side portion 41a with respect to the gap, and swings in a direction along the short side portion 41a and is connected to one side portion of the short side portion 41a. Switchable between a connection state in which the other side portion is connected and a connection release state in which the connection between the one side portion and the other side portion of the short side portion 41a is released by swinging in the direction orthogonal to the short side portion 41a. It is configured. A standing member 18 is accommodated between the long side portion 41 b of the outer frame 41 and the crosspiece member 40. As shown in FIG. 18, a locking piece 43 is swingably attached to the long side portion 41 b, so that the locking state for locking to the standing leg member 18 and the locking to the standing leg member 18 are released. It can be switched to the unlocked state. When the locking piece 43 is switched from the locked state to the unlocked state, the standing leg member 18 is deployed from between the long side portion 41b and the crosspiece member 40 by spring bias. A concave groove 44 is formed on the upper surface of the long side portion 41b, and an auxiliary arm 45 is accommodated in the concave groove 44. When the load is not placed on the support portion 5, the auxiliary arm 45 is stored in the concave groove 44, and when the load is placed on the support portion 5, the auxiliary arm 45 is pulled upward from the concave groove 44 with fingers. It supports the side of the luggage. The shaft connecting portion 6 is provided with a stay 48 having a wheel 4 attached to the tip thereof so that it can be withdrawn and retracted. The shaft connecting portion 6 and the stay 48 are pivotally connected by a bolt and a wing nut 49. Thereby, the stability of the carrier 1 is increased by projecting the stay 48 outward from the support portion 5 and fastening the stay 48 with the bolt and the wing nut 49. The stay 48 can be bent with respect to the shaft connecting portion 6 in a state in which the stay 48 is pulled out. Thereby, the carrier 1 can be carried compactly by folding the carrier 1.

  In the shaft 3 according to each of the embodiments described above, the lock member 9 is inserted into one of the shaft members 7 when the adjacent shaft members 7 are in a bent state, and the shaft members 7 are long. In the shaft 3 according to the present embodiment, one of the shaft members 7 is bent when the adjacent shaft members 7 are in a bent state. 7 when the shaft members 7 are in a long state, and are attached to the outside of both shaft members 7. A handle 33 is further attached to the other end side shaft member 7b similar to the first and second embodiments. Of course, in the shaft 3 according to the present embodiment, the configuration of the shaft 3 according to each of the above embodiments may be adopted.

  Specifically, as shown in FIGS. 15 and 16, the shaft member 7 includes a semi-cylindrical tip portion 50 having a rectangular through hole 51. A rod-shaped member 53 is inserted into the through hole 51, and adjacent shaft members 7 are connected to each other via the rod-shaped member 53 so as to be relatively rotatable. The through hole 51 of the shaft member 7 is formed so that one side (see FIG. 16 (a)) cuts deeper than the other side (see FIG. 16 (b)). As a result, even if one of the adjacent shaft members 7 is to be bent to the other side with respect to the other shaft member 7, the notch on the other side of the through hole 51 is shallow, and the rod-shaped member 53 is formed in the through hole. Since the first shaft member is in contact with 51, one shaft member cannot be bent to the other side with respect to the other shaft member 7. On the other hand, since the notch on one side of the through hole 51 is deep and the rod-like member 53 does not contact the through hole 51, one shaft member can be bent to one side with respect to the other shaft member 7 ( (Refer FIG. 15 (b)-(2)). Accordingly, one of the adjacent shaft members 7 is bent only on one side with respect to the other shaft member 7.

  The lock member 9 is formed in a rectangular tube shape having both ends opened, and is mounted on the outer side of one or both of the adjacent shaft members 7. The shaft member 7 is provided with two protrusions 54 that are engaged with the lock member 9 at intervals in the longitudinal direction. When the lock member 9 is slid with a finger or slid in one direction due to its own weight, the shaft member 7 comes into contact with one protrusion 54 of the one shaft member 7, and the lock member 9 is outside the one shaft member 7. It will be in the bent state attached to. When the lock member 9 is slid with a finger or slid in the other direction due to its own weight, the shaft member 7 comes into contact with the other protrusion 54 of the other shaft member 7, and the lock member 9 is outside the shaft members 7. It becomes a long state to be attached to.

Hereinafter, a folding procedure of the carrier 1 having the above configuration will be described.
From the state of FIG. 13, first, the standing leg member 42 is accommodated, and the locking piece 43 is switched from the non-locking state to the locking state to maintain the storing state of the standing member 42. Next, the auxiliary arm 45 is stored in the concave groove 44. Further, the connecting portion 46 is switched from the coupled state to the uncoupled state, and the shaft member 7 is switched from the sideways posture to the standing posture while the shaft member 7 passes through the gap between the adjacent cross members 40, and the shaft member 7 and the supporting portion are switched. 5 are arranged in the same direction (see FIG. 18). Then, the connecting portion 46 is switched from the unlinked state to the connected state again, and the lock member 9 is switched from the long state to the bent state (see FIG. 17). In this state, the folding of the shaft members 7 proceeds by folding the adjacent shaft members 7 in the direction of decreasing the angle formed by the adjacent shaft members 7. When the side wall surfaces of the adjacent shaft members 7 come into contact with each other, the folding of the shaft members 7 is completed. The fitting between the convex portion (not shown) provided at the upper end portion of the adjacent shaft member 7c and the concave portion (not shown) provided at the side surface of the other end side shaft member 7b is released, and the adjacent shaft member 7c and The side wall surfaces of the other end side shaft member 7b are brought into contact with each other. The hook portion 47 provided on the long side portion 41 b is swung and engaged with the pin 33 a provided on the other end side shaft member 7 b fixed to the handle 33, thereby maintaining the folded state of the shaft member 7. Is done. The stay 48 is pulled out and bent, and the stay 48 is fixed in a bent state by tightening bolts and wing nuts 49 to complete the folding of the entire carrier 1 (see FIGS. 19 and 20). As a result, the handle 33 when the carrier 1 is loaded and pulled with the carrier 1 can be used as the handle when the carrier 1 is folded and the carrier 1 is carried. Can be achieved. Although the load may be placed directly on the support portion 5, a support plate may be placed on the support portion 5 as in the first and second embodiments, and the load may be placed on the support plate.

[Fourth embodiment]
Next, a fourth embodiment of the carrier 1 according to the present invention will be described with reference to FIG.
The carrier 1 according to the present embodiment includes a carrier body 2 having a substantially flat plate shape, wheels 4 attached to the lower portion of the carrier body 2, and a foldable one extending upward from the carrier body 2. And a shaft 3.

  The configuration of the shaft 3 is substantially the same as in the first embodiment. Therefore, also in this embodiment, the shaft 3 is configured to be compact by being deformed between the first state and the second state. However, in the present embodiment, the end shaft member 7a is not completely connected to the carrier body 2, and is different from the first embodiment in that they are configured to be detachable.

A locking hole 23 is provided in the convex portion 14 provided on the terminal side of the terminal shaft member 7a. On the other hand, the carrier main body 2 is provided with a recess 15 and a stopper 24 that engages and disengages from the locking hole 23 of the convex portion 14 of the end shaft member 7 a by sliding inside the carrier main body 2. The stopper 24 is urged by a spring and is normally positioned at a position where it engages with the locking hole 23, but in a state where it slides to a position where the stopper 24 is disengaged from the locking hole 23 against the elastic force of the spring, the shaft 3. And the carrier body 2 can be detached.
As an example of such a detachable configuration, in addition to the above, a thread that engages with the convex portion 14 provided on the end shaft member 7a and the concave portion 15 provided on the carrier body 2 is cut. And a method in which a fitting hole is provided in the carrier body 2 and a portion of the convex portion 14 that protrudes through the fitting hole is screwed.

  The carrier body 2 is provided with a storage recess 28 having a size corresponding to the second state of the shaft 3, and the shaft 3 removed from the carrier body 2 is placed in the storage recess 28 in the second state. Stored. Therefore, like the first embodiment, it can be folded into a very compact shape, and can be easily stored and carried in a bag.

  In this embodiment, the carrier body 2 itself corresponds to the “support portion 5” in the first embodiment, and the carrier body 2 is provided with the auxiliary member 13 and the standing member 18 similar to those in the first embodiment. It is good also as a structure.

[Other Embodiments]
In each of the above-described embodiments, an example in which the adjacent shaft members 7 are connected to each other by using a flat metal material as the connecting member 8 and folded while maintaining the relative direction in the longitudinal direction of the connected shaft members 7 is shown. It was. However, each shaft member 7 may be folded in an antiparallel direction. In this case, for example, an elastic material such as a rubber or a spring that generates a tensile tension along the longitudinal direction when the adjacent shaft members 7 are in a long state and can be expanded to the extent that they can be folded is used. Used as the connecting member 8.

  In each of the above-described embodiments, an example has been described in which the lock member 9 is inserted over both of the adjacent shaft members 7 by its own weight in the long state. However, for example, a configuration may be adopted in which the lock member 9 is biased so as to be inserted over both of the adjacent shaft members 7 by providing a spring inside the shaft member 7. In this case, the shaft members 7 can be more reliably fixed in the long state.

  In the first and second embodiments described above, the shaft 3 is engaged between the plurality of shaft members 7, the connecting member 8 that connects the adjacent shaft members 7, and the inside of the shaft members 7. Although the structure provided with the lock member 9 which fixes the shaft member 7 to a long state was illustrated, the contact member which contact | abuts the connection member 8 is further provided in the side surface of the shaft 3, and one shaft member is the other shaft. You may comprise so that it may bend only to one side with respect to a member.

The perspective view which shows the expansion | deployment state of the whole carrier which concerns on 1st embodiment. Enlarged view of the carrier body in FIG. Rear view for explaining fixing of shaft and carrier body The perspective view which shows the mode of a handle part formation The perspective view for demonstrating the shape change from the 1st state of a shaft The perspective view which shows the 2nd state of a shaft Sectional view along the longitudinal axis in the second state of the shaft The perspective view which shows the state in which the shaft member was accommodated along the guide member. The perspective view which shows the folding state of the carrier which concerns on 1st embodiment. The perspective view of the main-body part of the carrier which concerns on 2nd embodiment. The perspective view seen from the bottom face side of the carrier concerning a second embodiment The perspective view which shows the folding state of the carrier which concerns on 2nd embodiment. The perspective view which shows the expansion | deployment state of the whole carrier which concerns on 3rd embodiment. Enlarged view of the carrier body according to the third embodiment The figure which shows the state of the adjacent shaft member which concerns on 3rd embodiment. The figure which shows the state of the adjacent shaft member which concerns on 3rd embodiment. The figure which shows the state of the adjacent shaft member which concerns on 3rd embodiment. The perspective view which shows the folding state of the carrier which concerns on 3rd embodiment. The perspective view which shows the folding state of the carrier which concerns on 3rd embodiment. The front view which shows the folding state of the carrier which concerns on 3rd embodiment The perspective view which shows the carrier which concerns on 4th embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Carrier 2 Carrier main body 3 Shaft 4 Wheel 5 Support part 6 Shaft connection part 7 Shaft member 8 Connection member 9 Lock member 20 Guide member (guide plate)

Claims (6)

A carrier body provided with wheels, and a single shaft extending from the carrier body,
The shaft is
A plurality of shaft members connected to each other so that the relative angle can be changed;
A carrier comprising: a lock member that engages over the plurality of shaft members and fixes the plurality of shaft members in a long state. The lock member engages between adjacent shaft members among the plurality of shaft members,
When the adjacent shaft members are bent, they are inserted into one of the shaft members, and when the shaft members are in a long state, they are inserted into both shaft members. The carrier according to claim 1. The lock member engages between adjacent shaft members among the plurality of shaft members,
When the adjacent shaft members are in a bent state, they are attached to the outside of one of the shaft members, and when the shaft members are in a long state, they are attached to the outside of both shaft members. The carrier according to claim 1. The carrier body includes a shaft connecting portion to which the shaft is connected, and a support portion for placing and supporting a load,
The carrier according to any one of claims 1 to 3, wherein the shaft coupling portion is integrated with the shaft and is foldably connected to the support portion.   The pair of guide members arranged to be opposed to the shaft connecting portion is provided, and the shaft member is accommodated by engaging the shaft member across both the guide members. Career.   The carrier according to any one of claims 2 to 5, wherein one of the adjacent shaft members is bent only on one side with respect to the other shaft member.

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