JP2018058557A - Handcart - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handcart which enables a user to use the handcart as a chair, load a bag thereto, and take luggage into/out from the bag with easy operations.SOLUTION: A handcart 1 has front wheels and rear wheels located at one end of a frame and a handle located at the other end of the frame and includes: a main board 17 rotatably sandwiched by front frames 3 and in which one side functions as a bag mounting surface 17a and the other side functions as a seating surface; and a lock mechanism 39 which locks rotation of the main board 17 relative to the front frame 3. The lock mechanism 39 locks the rotation of the main board 17 in a first rotation position where the bag mounting surface 17a faces the front side or the upper side and a second rotation position where the seating surface faces the upper side in a standing posture.SELECTED DRAWING: Figure 3A

Description

  The present invention relates to a handcart having a front wheel and a rear wheel at one end of a frame and a handle at the other end of the frame.

  Conventionally, wheelbarrows for elderly people (also called “silver cars”) are known. This wheelbarrow is mainly used when an elderly person who has no problem with walking but has weak legs and is apt to get tired or injured in the knees and waist and goes out for shopping. A feature of such a wheelbarrow is that a user (elderly person) has a seat surface for use as a chair and a storage unit for carrying luggage. Further, casters are employed for the front wheels to freely change the traveling direction, and the rear wheels are configured to be braked to ensure safety. Further, when used as a chair, a lock mechanism for stopping the rotation of the wheel is also provided.

  For example, the handcart described in Patent Document 1 has not only a basic function as a handcart to assist walking, but also a function as a chair, a function of storing luggage, and a function of folding and compacting. This wheelbarrow is provided with a bag-like bag for storing luggage.

Registered Utility Model No. 3078122

  However, in the handcart described in Patent Document 1, as described in paragraph [0031], in order to be used as a chair, the bag must be removed, which is not convenient. Further, in the wheelbarrow described in Patent Document 1, when carrying a lot of luggage and removing and moving the whole bag, it is necessary to hold all the luggage with hands, which may be harsh for elderly people. A configuration that reduces the burden on the user even after removing the bag is desired.

  The present invention has been made in view of such circumstances, and provides a handcart that can be used as a chair with a simple operation, and that can be loaded and unloaded with a bag. With the goal.

  (1) In order to achieve the above object, the present invention takes the following measures. That is, the handcart of the present invention is a handcart having a front wheel and a rear wheel at one end of the frame and a handle at the other end of the frame, and is rotatably held by the frame, one of which is a bag mounting surface. A main board that functions as a seating surface and a lock mechanism that locks the rotation of the main board with respect to the frame. The rotation of the main board is locked at a first rotation position facing the front and a second rotation position where the seating surface faces upward.

  In this way, the main board can be rotated and the seat surface can be locked facing upward, so that the handcart can be used as a chair. Further, since the bag mounting surface can be locked facing forward or upward, it is possible to load the bag and load / unload the bag with respect to the mounted bag.

  (2) Moreover, in the handcart of the present invention, the lock mechanism is installed on the frame and is movable along the frame, and is installed on a side surface of the main board, and is locked to the slider. Thus, the main board includes first and second locking portions that lock the rotation of the main board at the first and second rotational positions, respectively. In this way, the respective locking portions are locked to the slider, so that the main board having the rotation shaft on the frame can be locked at the respective rotation positions.

  (3) In the handcart of the present invention, the lock mechanism includes an urging mechanism that connects the slider and the frame and automatically returns to a predetermined position on the frame. The first or second locking portion is locked using a force to return the position. Since the slider is locked using the force that returns the slider to the predetermined position as described above, the slider can be easily locked and unlocked by shifting the slider from the predetermined position.

  (4) Further, in the handcart of the present invention, the lock mechanism includes a notch formed on one of the slider and the first or second locking portion, and a protrusion formed on the other. The rotation of the main board is locked by fitting the protrusion into the portion. As a result, the rotation of the main board can be reliably locked at the rotating shaft and the locking position.

  (5) Moreover, the handcart of this invention is further equipped with the stopper which stops the rotation beyond the said 1st or 2nd rotation position in the side surface of the said main board. This facilitates handling because the main board does not rotate beyond the required range. In addition, the main board can be easily locked at the first or second rotational position.

  According to the present invention, a handcart can be used as a chair with a simple operation, and a bag can be mounted and a baggage can be taken in and out of the mounted bag.

It is a perspective view at the time of seeing diagonally from the height of about half with respect to the height of a wheelbarrow. It is a perspective view at the time of seeing diagonally from the height of about half with respect to the height of a wheelbarrow. It is a perspective view at the time of seeing diagonally from the wheel side of the handcart. It is a perspective view at the time of seeing diagonally from the wheel side of the handcart. It is a figure which shows the state fixed with the attitude | position which faces a bag mounting surface in the direction containing perpendicular upper direction. It is a figure which shows the state fixed in the attitude | position which the seat surface faces in the direction containing perpendicular upper direction. It is the figure which showed a mode that the main board rotated in the state by which the bag was fixed on the bag mounting surface. It is the figure which showed a mode that the main board rotated in the state by which the bag was fixed on the bag mounting surface. It is the figure which showed a mode that the main board rotated in the state by which the bag was fixed on the bag mounting surface. It is the figure which showed a mode that the main board rotated in the state by which the bag was fixed on the bag mounting surface. It is the figure which showed a mode that the main board rotated in the state from which the bag was removed from the bag mounting surface. It is the figure which showed a mode that the main board rotated in the state from which the bag was removed from the bag mounting surface. It is the figure which showed a mode that the main board rotated in the state from which the bag was removed from the bag mounting surface. It is the figure which showed a mode that the main board rotated in the state from which the bag was removed from the bag mounting surface. It is a perspective view which shows a part at the time of seeing a handcart from the back side. It is a figure which shows schematic structure of a connection part. It is the figure which showed a mode that the wheelbarrow deform | transformed from the attitude | position at the time of use to the attitude | position at the time of folding. It is the figure which showed a mode that the wheelbarrow deform | transformed from the attitude | position at the time of use to the attitude | position at the time of folding. It is the figure which showed a mode that the wheelbarrow deform | transformed from the attitude | position at the time of use to the attitude | position at the time of folding. It is the figure which showed a mode that the wheelbarrow deform | transformed from the attitude | position at the time of use to the attitude | position at the time of folding. It is a figure which shows the state which mounted the bag in the state which the bag mounting surface faces in the direction containing perpendicular upper direction. It is a figure which shows the state which rotated the main board so that a seat surface may face in the direction including perpendicular upper direction in the state which mounted the bag. It is a figure which shows the state which removed the bag in the state which the bag mounting surface faces in the direction containing perpendicular upper direction. It is a figure which shows the state which removed the bag from the handcart. It is a figure which shows the state which extended the expansion-contraction rod in the bag. It is a figure which shows the state which rotated the main board so that a seat surface may face in the direction including perpendicular upper direction in the state which removed the bag. It is a figure which shows the state which folded the handcart with the bag removed. It is a figure which shows the state which folded the wheelbarrow in the state which mounted the bag.

  Conventionally, in order to use a handcart as a chair, the present inventors have to remove the bag, which is not convenient, and after carrying a lot of luggage with the handcart, remove the bag. Pay attention to the fact that you need to hold all your luggage with your hands when you move it, and by rotating the main board, you can use it as a chair without removing the bag, and it can be used as a carry bag as a detachable bag And found the present invention.

  That is, the handcart of the present invention is a handcart having a front wheel and a rear wheel at one end of the frame and a handle at the other end of the frame, and is rotatably held by the frame, one of which is a bag mounting surface. A main board that functions as a seating surface and a lock mechanism that locks the rotation of the main board with respect to the frame. The rotation of the main board is locked at a first rotation position facing the front and a second rotation position where the seating surface faces upward.

  As a result, the present inventors have made it possible to turn the seating surface, which is the back surface thereof, vertically upward even when the bag is mounted on the bag mounting surface of the main board. As a result, it was possible to use as a chair without removing the bag. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1A, 1B, 2A, and 2B are perspective views of a handcart according to the present embodiment. 1A and 1B are perspective views when viewed obliquely from about half the height of the handcart 1, and FIGS. 2A and 2B are obliquely viewed from the wheel side of the handcart 1. It is a perspective view at the time of seeing. In the handcart 1, a basic frame (frame) is configured by the front frame 3, the rear frame 5, and the upper frame 7. The front frame 3 has a front subframe 11 at an end portion in the forward direction, and has a substantially U-shaped shape. The rear frame 5 has a rear sub-frame 13 at an end in the reverse direction, and has a ladder shape. Further, the upper frame 7 has an upper subframe 15 on the back side of the backrest portion 31 on which the weight of the user is applied, and has a ladder shape.

  Further, the front frame 3, the rear frame 5 and the upper frame 7 are rotatably connected to each other by a connection portion 9 at one end. For this reason, the front frame 3, the rear frame 5, and the upper frame 7 can rotate around the connection portion 9.

  The main board 17 is formed in a plate shape and has a pair of side surface portions 18a at both ends in the vehicle width direction. The main board 17 is sandwiched by the front frame 3 so as to be rotatable about a rotation shaft 18b provided on the side surface portion 18a. The main board 17 has two surfaces, one functioning as a bag mounting surface 17a and the other functioning as a seating surface 17b. The main board 17 rotates to switch between a first posture in which the bag mounting surface 17a faces in a direction including the vertically upward direction or a second posture in which the seat surface 17b faces in a direction including the vertically upward direction. It is fixed to the front frame 3 in one of the postures. A bag 19 is detachably mounted on the bag mounting surface 17a. 1A and 2A show a state where the bag 19 is mounted on the bag mounting surface 17a, and FIGS. 1B and 2B show a state where the bag 19 is detached from the bag mounting surface 17a.

  The link mechanism 21 connects the three members at the connection point 21 a and regulates the distance between the front frame 3 and the rear frame 5, while interlocking with the upper frame 7 to bring the front frame 3 and the rear frame 5 close to each other. It has a function to make it.

  The pair of front wheels 23 is provided at the end opposite to the connection portion 9 of the front frame 3 by a caster method, and the pair of rear wheels 25 is opposite to the connection portion 9 of the rear frame 5. It is provided at the end. The upper frame 7 is connected to the front frame 3 and the rear frame 5 at the connection portion 9 and is fixed so as to be substantially flush with the front frame 3 when the handcart 1 is used. With this configuration, the user can easily change the traveling direction of the handcart 1 by operating the handle 27 provided at the end opposite to the connection portion 9 of the upper frame 7. . The brake lever 29 is connected to a brake that stops the rotation of the rear wheel 25, and is used to reduce the speed of the wheelbarrow 1 or to lock the rear wheel and maintain the stop state of the wheelbarrow 1. It is done.

  The backrest part 31 is fixed to the 2nd attitude | position which the seating surface 17b faces in the direction including perpendicular upper direction, and supports a user's back when a user uses the handcart 1 as a chair. When the user uses the handcart 1 as a chair, the main body side holding portion 33 functions as a support when standing up from a sitting state, or when the handcart 1 is transported in a folded state as will be described later. Or function as a handle. The lock release wire 35 is used to release the lock mechanism that locks each posture when the handcart 1 is folded from the normal state or when the handcart 1 is expanded from the folded state to the normal state.

  In the bag 19, the bag main body has a space for storing luggage, and has a luggage outlet that can be opened and closed with a fastener. A handle is provided at one end of the bag body and is used when the user carries the bag 19. A pair of wheels are provided at the end of the bag body opposite to the handle. The bag body has a substantially flat abdominal surface on the opposite side of the baggage outlet. Since the abdominal surface is a substantially flat surface, the abdominal surface and the bag mounting surface 17a of the handcart 1 can be well aligned.

  3A and 3B are diagrams showing a concept of fixing the main board 17 to the front frame 3, and a part thereof is shown as a perspective view for convenience of explanation. FIG. 3A shows a state in which the bag mounting surface 17a is fixed in a posture that faces in a direction including the vertically upward direction, and FIG. 3B shows a state in which the seat surface 17b is fixed in a posture that faces in a direction that includes the vertically upward direction. . In FIGS. 3A and 3B, only the front frame 3 positioned on the back side with respect to the paper surface is shown for convenience of drawing.

  The main board 17 is connected to the front frame 3 by rotating shafts 18b provided at two points on the central axis of rotation. This connecting point is preferably located on the side surface portion 18a of the main board 17 on the side closer to one end surface than the intermediate position (the front side at the seating position or the upper side when the bag is exposed). Further, on the front frame 3, it is preferable that there is a connection point symmetrically with respect to the height of the sitting position in the handcart in the standing posture.

  The main board 17 is preferably rotatably connected to the front frame 3 as in the above example from the viewpoint of seating or use of the bag 19, but is rotatable relative to the rear frame 5 or the upper frame 7. It may be connected to.

  The lock mechanism 39 can fix the main board 17 to the front frame 3 by locking the rotation of the main board 17. The lock mechanism 39 includes a slider 40, a biasing portion 42, a locking projection 43a (first locking portion (for bag exposure)) and a locking projection 43b (second locking portion (for seating)). ing. In the example shown in FIG. 3A, the slider 40 and the biasing portion 42 form a slider mechanism 17c. The slider mechanism 17 c is provided at a position facing the main board 17 of the pair of front frames 3.

  The lock mechanism 39 locks the rotation of the main board 17 at a rotation position (first rotation position) when the bag is used with the bag mounting surface 17a facing forward or upward. Since the bag mounting surface 17a is locked facing frontward or upward, the bag mounting surface 17a is exposed on the front surface or the upper surface of the handcart 1 in the standing posture, and the bag 19 is mounted and a baggage can be taken in and out of the mounted bag 19. Easy to do. The main board 17 is preferably locked at a position where the axial direction of the front frame 3 is parallel to the bag mounting surface 17a.

  Further, the lock mechanism 39 can lock the rotation of the main board 17 at the rotation position (second rotation position) at the time of sitting when the seat surface faces upward in the standing posture. Thus, since the seating surface is locked facing upward, the handcart can be used as a chair. Further, it can be used for seating while the bag 19 is mounted.

  The slider 40 is installed on the front frame 3 and is movable along the front frame 3. The slider 40 has a shape along the surface of the front frame 3 and is provided so as to be slidable parallel to the axial direction of the front frame 3. In the example shown in the figure, a slide projection 17 h (screw head) provided on the front frame 3 is inserted into a guide groove 17 k provided in the slider 40 parallel to the slide movement direction. The slider 40 is allowed to move only along the guide groove 17k with respect to the slide projection 17h, so that the movement perpendicular to the axis of the front frame 3 is restricted.

  The urging unit 42 connects the slider 40 and the front frame 3 and automatically urges the slider 40 toward a predetermined neutral position on the front frame 3. The urging portions 42 are provided as a pair as a pair, and apply forces in opposite directions to the slider 40, and these forces balance the slider 40 at the neutral position.

  The urging portion 42 is an elastic member such as a spring, for example, and it is preferable to withstand long-term use. In the example shown in the figure, the front frame 3 and the slider 40 are connected by a spring provided in parallel with the moving direction.

  The slider 40 preferably locks the locking protrusion 43a or 43b with respect to the front frame 3 by using a force to return to the neutral position on the front frame 3. By locking the slider 40 against the force of returning the slider 40 to the neutral position, locking and unlocking are facilitated.

  The locking projection 43a (first locking portion) is installed at a position where the distance from the bag mounting surface 17a is equal to or less than D1 in the side surface portion 18a of the main board 17 when the width of the front frame 3 is D1. The rotation of the main board 17 is locked at the rotation position (first rotation position) when the bag is used. The locking projection 43a is provided at a position that overlaps the front frame 3 when the bag mounting surface 17a is in a rotational position facing forward or upward in the standing posture of the handcart. The locking projection 43a is preferably provided at a position closer to the lower end of the side surface portion 18a than the rotating shaft 18b when the bag is exposed.

  The locking projection 43b (second locking portion) is installed on the side surface portion 18a of the main board 17, and is locked to the slider 40, whereby the rotation of the main board 17 is rotated to the rotation position (second rotation). Lock in position). The locking protrusion 43b is provided at a position where the distance from the rotation shaft 18b is equal to or greater than D2 in the side surface portion 18a, where D2 is the distance between the rotation shaft 18b and the bag mounting surface 17a. The locking projection 43b is provided on the mountain-shaped portion 18c protruding so as to be away from the bag mounting surface 17a of the side surface portion 18a. As a result, the locking projection 43b overlaps with the front frame 3 when the seating surface is in a rotating position where the seating surface faces upward in the standing posture. The locking protrusion 43b is preferably provided at a position closer to the front end in the seating posture than the rotation shaft 18b in the side surface portion 18a.

  As described above, the locking projections 43a and 43b are engaged with the slider 40, so that the main board 17 is securely fixed at the two points of the rotation shaft 18b on the front frame 3 and the engagement position. As a result, the main board 17 can be locked at each rotational position with respect to the front frame 3.

  The slider 40 has locking notches 41a and 41b at both ends in the sliding direction. The locking projections 43a and 43b are, for example, screw-shaped having a head and a shaft portion, and the locking notches 41a and 41b are semi-oval shapes that fit into the shaft portions of the locking projections 43a and 43b, respectively. preferable. Thus, the lock mechanism 39 has a notch portion on one side and a projection on the other side, and the projection fits into the notch portion to lock the rotation of the main board 17. The above example is preferable from the viewpoint of manufacturing, but conversely, a notch portion may be formed in the locking portion of the main board 17 and a protrusion may be formed on the slider 40.

  As shown in FIGS. 3A and 3B, a pair of stoppers 17 d and a pair of stoppers 17 e are provided on the side surface of the main board 17. The pair of stoppers 17d are formed in an L shape, and the rotation of the main board 17 is stopped when a tip portion provided so as to form a surface perpendicular to the rotation direction hits the front frame 3. As a result, the stopper 17d can stop the rotation of the main board 17 beyond the rotation position when sitting or the rotation position when using the bag. Thereby, handling becomes easy. In addition, the main board can be easily locked at each lock position.

  A pair of locking projections 43a is provided on the main body of the pair of stoppers 17d. When the main board 17 is in the state shown in FIG. 3A, the pair of locking protrusions 43a engage with the locking notches 41a on the front wheel 23 side of the slider 40, and the pair of stoppers 17d are connected to the wheels of the front frame 3. The main board 17 prevents the main board 17 from rotating about the rotation shaft 18b in the direction in which the full engagement 17 is raised and the bag fixing hole 17f is lowered.

  Further, the pair of stoppers 17e are formed in an L shape, and the rotation of the main board is stopped when the tip portion hits the front frame. A pair of locking projections 43b are provided on the body portions of the pair of stoppers 17e. When the main board 17 is in the state shown in FIG. 3B, the pair of locking protrusions 43b engage with the locking notches 41b on the rotary shaft 18b side of the slider 40, and in a direction including the vertically upper side of the front frame 3. The main board 17 prevents the main board 17 from rotating in the direction in which the engagement groove 17g rises and the bag fixing hole 17f descends about the rotation shaft 18b by contacting the facing surface.

  Since such a configuration is adopted, the main board 17 can be fixed to the front frame 3 in any state of FIG. 3A and FIG. 3B.

  In FIG. 3A, a pair of bag fixing holes 17f with which the lock pins of the bag 19 are engaged are provided at the end portions of the side surface portions 18a in the direction from the locking protrusions 43a toward the rotation shaft 18b. Further, an engagement groove 17g that engages with an engagement protrusion of the bag 19 is provided at an end portion of the main board 17 in a direction from the rotation shaft 18b to the locking protrusion 43a. With this configuration, the bag 19 can be mounted on the bag mounting surface 17a of the main board 17 with one touch.

  Since the main board 17 can be fixed to the front frame 3 as described above, the handcart 1 according to this embodiment can be modified as follows. 4A, 4B, 4C, and 4D are diagrams sequentially illustrating how the main board 17 rotates in a state where the bag 19 is fixed on the bag mounting surface 17a of the main board 17. FIG. As shown in FIG. 4A, in the normal state, the handcart 1 takes the first posture in which the bag mounting surface 17a faces in the direction including the vertically upward direction. In this case, the lock mechanism 17 c functions and the main board 17 is fixed to the front frame 3.

  When the user unlocks the lock mechanism 17c and rotates the main board 17 around the rotation shaft 18b in the direction in which the engagement groove 17g is raised and the bag fixing hole 17f is lowered, the state is shown in FIG. 4B. Thus, the main board 17 can be rotated with the bag 19 mounted. When further rotated, as shown in FIG. 4C, the seating surface 17b faces in a direction including vertically upward. Finally, the main board 17 is fixed in the second posture (seat rotation position) in which the seat surface 17b faces in a direction including vertically upward. In this case, the lock mechanism 17 c functions and the main board 17 is fixed to the front frame 3. In order to return the main board 17 to the original posture, the operation may be performed in the reverse order to the above description.

  5A, FIG. 5B, FIG. 5C, and FIG. 5D are diagrams sequentially illustrating how the main board 17 rotates in a state where the bag 19 is removed from the bag mounting surface 17a of the main board 17. As shown in FIG. 5A, in the normal state, the main board 17 is locked to rotate in a first posture (rotation position when the bag is used) in which the bag mounting surface 17a faces in a direction including vertically upward. In this case, the lock mechanism 17 c functions and the main board 17 is fixed to the front frame 3.

  When the user unlocks the lock mechanism 17c and rotates the main board 17 around the rotation shaft 18b in the direction in which the engagement groove 17g is raised and the bag fixing hole 17f is lowered, the state is shown in FIG. 5B. Thus, the main board 17 can be rotated. When further rotated, as shown in FIG. 5C, the seating surface 17b faces in a direction including vertically upward. Finally, as shown in FIG. 5D, the seating surface 17b is fixed in a second posture (rotational position at the time of sitting) facing in a direction including vertically upward. In this case, the lock mechanism 17 c functions and the main board 17 is fixed to the front frame 3. In order to return the main board 17 to the original posture, the operation may be performed in the reverse order to the above description.

  FIG. 6A is a perspective view showing a part when the handcart 1 is viewed from the back side. As shown in FIG. 6A, the front frame 3, the rear frame 5, and the upper frame 7 are rotatably connected at the connection portion 9. The upper frame 7 has a telescopic function so that the height of the handle can be changed according to the height of the user. That is, the expansion / contraction mechanism 70 of the upper frame 7 includes an expansion / contraction rod 72 having an adjustment hole 71 and an adjustment screw 73, and the expansion / contraction rod 72 can be extended or contracted by operating the adjustment screw 73. Can be fixed at the desired length.

  FIG. 6B is a diagram showing a schematic configuration of the connecting portion 9, and a part thereof is shown as a perspective view for convenience of explanation. The connecting portion 9 includes a first notch portion 9a that determines the position of the upper frame when the handcart 1 is in use, and a second notch portion when the handcart 1 is in the folded position. 9b. A claw portion 35a is provided at the end of the upper frame 7 on the connection portion 9 side so as to be able to advance and retract. The claw portion 35a is urged by a spring (not shown) so as to always advance. The claw portion 35a is connected to the unlocking wire 35 and is configured to retract when the unlocking wire 35 is operated by the user.

  The handcart 1 is fixed to the posture at the time of use because the nail | claw part 35a fits into the 1st notch part 9a. On the other hand, when the claw portion 35a is fitted into the second notch portion 9b, the handcart 1 is fixed in the folded posture.

  As described above, since the upper frame 7 can be fixed by the first notch 9a or the second notch 9b, the handcart 1 according to this embodiment can be deformed as follows. it can. FIG. 7A, FIG. 7B, FIG. 7C, and FIG. 7D are diagrams sequentially showing how the handcart 1 is deformed from the posture at the time of use to the posture at the time of folding. In the state shown to FIG. 7A, since the nail | claw part 35a has fitted into the 1st notch part 9a, the handcart 1 is being fixed to this attitude | position. When the user operates the lock release wire 35 in this state, the claw portion 35a is retracted, and the upper frame 7 can be rotated in the direction of the rear frame 5 around the connection portion 9. When the upper frame 7 starts to rotate, since the upper frame 7 and the link mechanism 21 are interlocked, the connection point 21a of the link mechanism 21 is pulled up. As a result, the link mechanism 21 starts to bend and moves so that the front frame 3 and the rear frame 5 are close to each other. When the upper frame 7 is further rotated, the state shown in FIG. 7C is obtained, and the front frame 3 and the rear frame 5 come close to each other, and the rear frame 5 and the upper frame 7 come close to each other. When the upper frame 7 is further rotated, the claw portion 35a engages with the second notch portion 9b, and the upper frame 7 is fixed, resulting in the state shown in FIG. 7D. Thereby, the handcart 1 will be in the state folded completely. Thus, since the upper frame 7 is in a state of being close to the rear frame 5, the height of the handcart 1 can be reduced to about half that in use, and the size can be reduced when folded. What is necessary is just to expand | deploy in the reverse procedure to said description, when using the folded handcart 1.

  Next, the usage aspect of the handcart 1 comprised as mentioned above is demonstrated. 8A, FIG. 8B, FIG. 8C, FIG. 8D and FIG. 8E are views showing the usage mode of the handcart 1 from the side. FIG. 8A shows a state in which the bag 19 is mounted in a state where the bag mounting surface 17a faces in a direction including vertically upward. In this state, the user can walk while pushing the wheelbarrow 1, and when the user obtains a baggage for shopping or the like, the user can store it in the bag 19.

  FIG. 8B shows a state in which the main board 17 is rotated so that the seat surface 17b faces in a direction including a vertically upward direction with the bag 19 mounted. Thus, the seating surface 17b can be directed vertically upward without removing the bag 19, so that the user can use the handcart 1 as a chair with one touch.

  FIG. 8C shows a state in which the bag 19 is removed in a state where the bag mounting surface 17a faces in a direction including vertically upward. In this state, the user can walk while pushing the handcart 1. FIG. 8D shows a state where the bag 19 is detached from the handcart 1. Since the bag 19 has the wheels 19d, it can be used as a carry bag. That is, the user does not need to hold the bag 19 removed from the handcart 1 by hand. FIG. 8E shows the bag 19 with the bag telescopic rod 19m extended. As described above, since the grip portion 19j can be expanded and contracted by the bag telescopic rod 19m, the bag 19 can be used as a carry bag. Further, when a baggage is obtained by shopping or the like, it can be stored in the bag 19.

  FIG. 8F shows a state in which the main board 17 is rotated so that the seating surface 17b faces in a direction including vertically upward with the bag 19 removed. Thus, since the seat surface 17b can be directed vertically upward, the user can use the handcart 1 as a chair with one touch.

  FIG. 8G shows a state where the handcart 1 is folded with the bag 19 removed, and FIG. 8H shows a state where the handcart 1 is folded with the bag 19 mounted. Thus, since the handcart 1 can be folded small, the handcart 1 can be stored even if the storage space is limited. Further, as shown in FIG. 8H, since the bag 19 can be folded even when mounted, it is not necessary to remove the bag 19 when folding the wheelbarrow 1 such as when getting on a taxi. 1 can be folded small.

  As described above, according to the handcart according to the present embodiment, even when the bag is mounted on the bag mounting surface 17a of the main board 17, the seating surface 17b that is the back surface thereof is directed vertically upward. It becomes possible. As a result, the user can use it as a chair without removing the bag.

DESCRIPTION OF SYMBOLS 1 Wheelbarrow 3 Front frame 5 Rear frame 7 Upper frame 9 Connection part 9a 1st notch part 9b 2nd notch part 11 Front subframe 13 Rear subframe 15 Upper subframe 17 Main board 17a Bag mounting surface 17b Seat Surface 17c Slider mechanism 17d Stopper 17e Stopper 17f Bag fixing hole 17g Engagement groove 17h Sliding projection 17k Guide groove 18a Side surface 18b Rotating shaft 18c Mountainous portion 19 Bag 21 Link mechanism 21a Connection point 23 Front wheel 25 Rear wheel 27 Handle 29 Brake Lever 31 Back portion 33 Main body side gripping portion 35 Unlocking wire 35a Claw portion 39 Lock mechanism 40 Slider 41 Locking notch portion 42 Energizing portion 43a Locking projection 43b Locking projection 70 Telescopic mechanism 71 Adjustment hole 72 Telescopic rod 73 Adjustment screw

Claims (5)

A wheelbarrow having a front wheel and a rear wheel at one end of the frame, and a handle at the other end of the frame,
A main board that is rotatably held by the frame, one of which functions as a bag mounting surface and the other of which functions as a seating surface;
A locking mechanism that locks the rotation of the main board with respect to the frame,
In the standing posture, the lock mechanism locks the rotation of the main board at a first rotation position where the bag mounting surface faces forward or upward and at a second rotation position where the seat surface faces upward. car. The locking mechanism is
A slider installed on the frame and movable along the frame;
A first locking portion and a second locking portion which are installed on a side surface of the main board and locked by the slider to lock the rotation of the main board at the first and second rotation positions, respectively; The handcart according to claim 1. The locking mechanism has a biasing mechanism that connects the slider and the frame and automatically returns to a predetermined position on the frame;
3. The handcart according to claim 2, wherein the slider locks the first or second locking portion using a force returning to the predetermined position.   The locking mechanism has a notch formed in one of the slider and the first or second locking portion, a protrusion formed in the other, and the protrusion fitted into the notch so that the main board 4. The handcart according to claim 2, wherein the rotation is locked.   The handcart according to any one of claims 1 to 4, further comprising a stopper that stops rotation beyond the first or second rotation position on a side surface of the main board.

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