JP3167740U - Wheelbarrow - Google Patents

Abstract

A wheelbarrow in which a loading unit is detachably connected to a cart frame unit by a connector means. A handcart is configured by including a cart frame unit and a loading unit that is detachably connected to the cart frame unit by a connector means. The swinging grip 31 is attached to the stacking unit so as to be rotatable so that it can be switched between a sideways fall position and a vertical position. Further, the connector means is interlocked with the rotation of the swinging grip, and when the swinging grip reaches the laterally falling position, the loading unit is locked to the cart frame unit, and the swinging grip is moved to the vertical position. The arrangement is configured so that the locking can be released when the position is reached. [Selection] Figure 2

Description

  The present invention relates to a wheelbarrow, and more particularly to a wheelbarrow in which a loading unit is detachably connected to a cart frame unit by a connector means.

  FIG. 1 shows an example of a wheelbarrow. The wheelbarrow is for carrying a pet and has a cart frame 11 with a wheel 12 attached to the lower part thereof and a pet bag fixed to the cart frame 11. 13.

  In such a wheelbarrow, the pet bag 13 as a loading means is fixed to the cart frame 11, so that another portable pet bag is also necessary in some cases, which is very inconvenient to use.

  In view of the above problems, the present invention provides a handcart in which a loading unit is detachably connected to a cart frame unit by a connector means.

  In order to achieve the above object, the present invention provides a cart including a cart frame unit and at least one loading unit that is detachably connected to the cart frame unit by a connector means. According to the number of the loading units, at least two means are attached to the cart frame unit according to the number of the loading units and the first connector fixed to each loading unit. Each of the first connectors is detachably coupled to one of the second connectors, and each of the first connectors is fixed to the stacking unit. A fixed unit, a lever pivotally connected to the fixed unit, and a pivotal position of the lever and the fixed unit. An insertion unit formed so as to be extended, the insertion unit extending from a tip thereof toward the pivot position, and a locked state and a released state according to the rotation of the lever And a locking protrusion formed on the locking arm are arranged and each of the second connectors receives the insertion unit. There is provided a handcart characterized in that a main body having an accommodation space and a locking hole capable of receiving and locking the locking protrusion formed on the locking arm is configured.

  In the wheelbarrow, a rocking grip is fixed to the lever, and the rocking grip can be switched between a horizontal position and a vertical position by turning the lever with respect to the stacking unit. The locking arm is switched to the locked state when the swinging grip reaches the sideways position according to the rotation of the lever and the swinging grip, and when the swinging grip reaches the vertical position. It is preferable to be arranged and configured to be switched to the released state.

  In the wheelbarrow, in the vicinity of the pivot position, a limit block fixed to the fixed unit and a pivot block are attached so as to be able to rotate together with the lever, and always protrude from the surface of the lever. A button that is urged, and the button includes a restriction protrusion formed so as to protrude toward the restriction block, and the restriction block includes a restriction hole. However, when the locking arm receives and locks the limiting protrusion corresponding to the position of the limiting protrusion of the button in the locked state and the released state, the button and the lever rotate. It is preferable that the change of the state of the locking arm can be restricted.

  In the wheelbarrow, the cart frame unit includes a pair of left and right side frames, each side frame having a first rod, and a second rod having one end attached to a middle portion of the first rod. , Both ends of the first rod and the third rod attached to the middle step of the second rod, the front wheel attached to the lower end of the first rod, and the second rod A rear wheel attached to the other end, and each side frame is attached with at least one second connector according to the number of the loading units, and each second frame The connector further includes a sliding unit to which the main body is fixed. The sliding unit has a base portion whose inner surface is in contact with a part of the peripheral surface of the first rod, and one end. edge The other end edge that is fixed to the base portion and is opposite to the one end edge is configured to be movable, and a portion between the one end edge and the other end edge is formed according to the position of the other end edge. A surrounding portion capable of tightly tightening the peripheral surface of the first rod together with the base portion, and a connecting end connected to the base portion using a pivot pin and connected to the other end edge And a switch having an operating end on the opposite side of the connecting end, and by operating the operating end, the position of the other end edge of the connecting end and the surrounding portion is determined. And can be tightened to loosen or loosen the circumferential surface of the first rod, and when the tightening of the surrounding portion to the circumferential surface of the first rod is loosened, The entire connector of 2 is slid along the first rod. It is preferable that it is possible to change.

  The present invention is also a handcart having a cart frame unit and a loading unit detachably connected to the cart frame unit by a connector means, wherein the loading unit has a swing grip. , So that it can be switched between a side-down position and a vertical position, and the connector means is interlocked with the rotation of the swing grip, and the swing grip is The stacking unit is locked to the cart frame unit when reaching the sideways position, and the locking is released when the swinging grip reaches the vertical position. A wheelbarrow is also provided.

  With the above configuration, the present invention provides a handcart in which the loading unit is detachably connected to the cart frame unit by the connector means, and in particular, the lever for operating the connector means is fixed to the swing grip or swings. The wheelbarrow can be quickly removed from the cart frame unit because it can be swung to a position where it can be easily lifted and can be unlocked by the connector means. Can be provided.

It is a side view in which an example of the conventional handcart is shown. 1 is a first side view of a preferred embodiment of the wheelbarrow of the present invention. It is a 2nd side view of preferable embodiment of the handcart of this invention. It is an exploded view in which the peripheral configuration of the first connector is shown. It is an exploded view in which the peripheral configuration of the second connector is shown. It is a partial sectional view in which the first connector and the second connector show the structural relationship in the released state. It is a partial sectional view in which the first connector and the second connector show the structural relationship in the locked state. FIG. 5 is a partial cross-sectional view showing a structural relationship in a state where a button is locked by a restriction block and rotation of a lever and a swing grip is restricted. It is a side view of the state which removed the loading frame from the cart frame of the wheelbarrow of this invention. It is sectional drawing in which the structure and operating method of the sliding unit in this invention are shown (loosening). It is sectional drawing by which the structure and operating method of the sliding unit in this invention are shown (tightening).

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

  2 and 3 are side views of a preferred embodiment of the wheelbarrow of the present invention. As shown, the wheelbarrow has a cart frame unit 2 with two upper and lower loading units 3 installed. is there.

  The cart frame unit 2 includes a pair of symmetrical side frames 20. However, since FIG. 2 is a side view, only the left side frame 20 is shown.

  Each side frame 20 includes a first rod 21, a second rod 22 having one end attached to the middle portion of the first rod 21, and both ends of the first rod 21 and the second rod 22. A third rod 23 attached to the middle stage, a front wheel 24 attached to the lower end of the first rod 21, and a rear wheel 25 attached to the other end (lower end) of the second rod 22. And a handle 26 attached to the upper end of the first rod 21.

  The two stacking units 3 can be switched between a frame portion 30 and a basket portion 38 attached to the frame portion 30, respectively, between a side-down position (see FIG. 3) and a vertical position (see FIG. 2). And a swing grip 31 that is rotatably attached. The two loading units 3 are detachably connected to the two side frames 20 constituting the cart frame unit 2 by the connector means 4.

  The configuration of the connector means 4 will be described with reference to FIGS.

  The connector means 4 includes two first frames 5 fixed to the frame portion 30 of each stacking unit 3 and two side frames 20 according to the number of the stacking units 3 (two in this embodiment). And the second connector 6 attached one by one. As shown in the drawing, in this embodiment, one upper connector and a second connector 6 are attached to each side frame 20. Each first connector 5 is detachably coupled to one second connector 6.

  FIG. 4 is an exploded view showing the peripheral configuration of the first connector 5.

  As shown in the drawing, each first connector 5 is pivotally connected to the fixed unit 51 by a fixed unit 51 fixed to the frame portion 30 of the stacking unit 3 and a pivot pin 81. A lever 52 and an insertion unit 53 formed so as to protrude downward from a pivotal position between the lever 52 and the fixed unit 51 are provided. The swing grip 31 is fixed to the lever 52, and the swing grip 31 is swingably mounted near the center of gravity of the frame portion 30 in the stacking unit 3 via the lever 52 and the fixed unit 51.

  The insertion unit 53 includes a locking arm 54 that extends from the lower end of the insertion unit 53 toward the pivot position, that is, toward the lever 52 and has flexibility, and protrudes from the surface of the locking arm 54. A locking projection 55 formed so as to be formed is formed.

  Further, the lever 52 is formed with an operation arm 521 extending to the side opposite to the swing grip 31 side, and a cam projection 56 corresponding to the operation arm 521 is formed at the upper end portion of the locking arm 54. Is formed. As shown in FIGS. 6 and 7, in a state where the swing grip 31 is disposed in the vertical position, the operation arm 521 abuts on the cam projection 56 and deforms the flexible locking arm 54 in a curved manner. In the state in which the swing grip 31 is disposed in the sideways position, the operation arm 521 can move away from the cam projection 56 and return the locking arm 54 to a position where it does not bend and deform.

  FIG. 5 is an exploded view showing the peripheral configuration of the second connector 6.

  As shown in the drawing, each second connector 6 has a main body 61, a receiving space 62 for receiving the insertion unit 53 in the main body 61, and a locking protrusion formed on the locking arm 54. A locking hole 63 that can receive and lock 55 is arranged.

  With this configuration, the first and second connectors 5 and 6 in the present invention correspond to the swinging state of the swinging grip 31, and the swinging grip 31 swings to the vertical position as shown in FIG. When it moves, the operation arm 521 on the side opposite to the swing grip 31 side comes into contact with the cam projection 56 to bend and deform the flexible locking arm 54, thereby forming the locking arm 54. The locking projection 55 can be retracted from the locking hole 63 of the second connector 6 to switch to the released state in which the first and second connectors 5 and 6 are not locked to each other. 7, when the control arm 521 swings to the side-down position, the operation arm 521 moves away from the cam projection 56 to return the locking arm 54 to the original position, thereby forming the locking arm 54. The locking projection 55 is the second Can be switched first connector 5 fits into the locking hole 63 of the connector 6 in a locked state for locking the second connector 6. That is, the locked or released state of the first and second connectors 5 and 6 can be controlled by the rotation of the lever 52 and the swing grip 31.

  Furthermore, in a preferred embodiment of the handcart of the present invention, below the pivot position of the lever 52, a restriction block 57 fixed to the fixing unit 51 is attached so as to be rotatable together with the lever 52. And a button 39 biased by a spring 392 so as to always protrude from the surface above the pivotal position of the lever 52.

  The button 39 has a limiting protrusion 396 formed so as to protrude toward the limiting block 57, and three limiting holes 572 are formed in the upper end portion of the limiting block 57. The positions of the three restricting holes 572 correspond to the positions of the restricting projections 396 of the button 39 when the engaging arm 54 is in the locked state and the released state, respectively, as shown in FIG. By receiving and locking the protrusion 396, the rotation of the button 39 and the lever 52 and the state change of the locking arm 54 can be restricted.

  With the above configuration, when the wheelbarrow of the present invention is placed in the loading state shown in FIG. 3, the swing grip 31 of each loading unit 3 is in the side-down position, and the first connector 5 is engaged. Since the stop projection 55 is fitted in the locking hole 63 of the second connector 6, the first connector 5 is locked to the second connector 6 and cannot be separated from the second connector 6. Each loading unit 3 is fixed to the cart frame 2.

  In the loaded state shown in FIG. 3, when the button 39 is pushed to enable the lever 52 to rotate and the swing grip 31 is lifted to the state shown in FIG. 2, the engagement in the first connector 5 is performed. As shown in FIG. 6, the stop protrusion 55 causes the locking protrusion 55 to be retracted from the locking hole 63 of the second connector 6 by the operation arm 521 coming into contact with the cam protrusion 56 as shown in FIG. 6. The connectors 5 and 6 can be switched to a released state where they are not locked to each other.

  In the state shown in FIG. 2, the first and second connectors 5 and 6 are in a released state in which they are not locked to each other. The unit 3 can be easily detached from the cart frame 2.

  That is, in order to remove the loading unit 3 from the cart frame 2 from the loading state shown in FIG. 3, the user should perform the operation of pressing the button 39 and turning the swing grip 31 to a vertical position where it can be easily lifted. The operation of removing the loading unit 3 from the cart frame 2 can be performed very simply and intuitively.

  In addition, it is easy to fix the loading unit 3 to the cart frame unit 2, and the insertion unit 53 of the first connector 5 that is just attached to the loading unit 3 is inserted into the accommodation space 62 of the second connector 6. After installing the cart frame unit 2 as described above, the button 39 is pushed and the swinging grip 31 is simply turned to the side-down position shown in FIG.

  Further, each second connector 6 is slid to fix the main body 61 to the first rod 21 of each side frame 20 as shown in FIGS. 2, 5, 10, and 11. A unit 7 is included.

  The sliding unit 7 has an upper end fixed to the lower end of the main body 61 by a fixing pin 84, a base 74, and a lower end of the connection 71, and one end edge 725. Is fixed to the base portion 74, and the other end edge 724 on the opposite side of the one end edge 725 is movably configured, and the pivot pin 83 pivots to the pivot end 742 of the base portion 74 And a switch 73 having a connecting end 732 rotatably connected to the other end edge 724 of the surrounding portion 72 by a pivot pin 82 and an operating end 731 on the opposite side of the connecting end 732; It has.

  The base portion 74 is in contact with a part of the circumferential surface of the first rod 21 from below at the inner surface (the upper surface in FIGS. 10 and 11), and the surrounding portion 72 is a surface between the one end edge 725 and the other end edge 724. Thus, the peripheral surface of the first rod 21 together with the base portion 74 can be tightly tightened. Further, as shown in FIGS. 10 and 11, by operating the operation end 731 of the switch 73, the positions of the connection end 732 and the other end edge 724 of the surrounding portion 72 are moved, and the first rod 21 is moved. The peripheral surface can be tightened tightly (see FIG. 11) or loosened (see FIG. 10).

  With this configuration, when the surrounding portion 72 is loosened from the circumferential surface of the first rod 21 as shown in FIG. 10, the entire second connector 6 slides along the first rod 21. To change the position.

  With the above configuration, the present invention provides a handcart in which the loading unit is detachably connected to the cart frame unit by the connector means, and in particular, the lever for operating the connector means is fixed to the swing grip or the swing grip. Provides a handcart that can swing the swinging grip to a position where it can be easily lifted and release the locking by the connector means, and can quickly remove the loading unit from the cart frame unit. Therefore, it can be applied to each type of wheelbarrow in which the loading unit needs to be removed.

2 Cart frame unit 20 Side frame 21 1st rod 22 2nd rod 23 3rd rod 24 Front wheel 25 Rear wheel 26 Handle 3 Loading unit 30 Frame portion 31 Swing grip 38 Basket portion 39 Button 392 Spring 396 Limiting projection 4 Connector means 5 First connector 51 Fixing unit 52 Lever 521 Operation arm 53 Insertion unit 54 Locking arm 55 Locking protrusion 56 Cam protrusion 57 Restriction block 572 Restriction hole 6 Second connector 61 Body portion 62 Housing space 63 Locking hole 7 Sliding unit 71 Connection portion 72 Surrounding portion 724 Other end edge 725 One end edge 73 Switch 731 Operation end 732 Connection end 74 Base portion 742 Pivot end 81 Pivot pin 82 Pivot pin 83 Pivot pin 84 Fixed pin

Claims (5)

A handcart having a cart frame unit and at least one loading unit removably coupled to the cart frame unit by a connector means,
At least two connector means are attached to the cart frame unit according to the number of the loading units, the first connector being fixed to each loading unit by two according to the number of the loading units, and the number of the loading units. Each of the first connectors is detachably coupled to one second connector, and
Each of the first connectors protrudes from a fixed unit fixed to the stacking unit, a lever pivotally connected to the fixed unit, and a pivotal position of the lever and the fixed unit. And an insertion unit that is formed as follows:
The insertion unit includes a locking arm that extends from a distal end thereof toward the pivot position and can be switched between a locked state and a released state in accordance with the rotation of the lever. The locking projection formed on the stop arm is arranged and configured.
Each of the second connectors has a main body having a receiving space for receiving the insertion unit and a locking hole capable of receiving and locking the locking projection formed on the locking arm. A wheelbarrow characterized by being constructed. A rocking grip is fixed to the lever, and the rocking grip can be switched between a horizontal position and a vertical position by turning the lever with respect to the stacking unit.
The locking arm is switched to the locked state when the swinging grip reaches the sideways position according to the rotation of the lever and the swinging grip, and the swinging grip reaches the vertical position. The wheelbarrow according to claim 1, wherein the handcart is configured to be switched to the released state. In the vicinity of the pivot position, a restriction block fixed to the fixed unit and a pivot block are attached so as to be rotatable together with the lever, and are urged so as to always protrude from the surface of the lever. And a button,
The button has a restriction protrusion formed so as to protrude toward the restriction block;
In the restriction block, the restriction hole receives and locks the restriction protrusion corresponding to the position of the restriction protrusion of the button in the locked state and the released state, respectively. The handcart according to claim 2, wherein the handcart is configured to be capable of restricting the rotation of the button and the lever and the state change of the locking arm. The cart frame unit includes a pair of left and right side frames,
Each side frame has a first rod, a second rod having one end attached to the middle step of the first rod, and both ends attached to the middle step of the first rod and the second rod, respectively. A third rod, a front wheel attached to the lower end of the first rod, and a rear wheel attached to the other end of the second rod;
Each side frame is attached with at least one second connector according to the number of the loading units,
Each of the second connectors further includes a sliding unit to which the main body portion is fixed. The inner surface of the sliding unit is in contact with a part of the peripheral surface of the first rod. The base portion and one end edge are fixed to the base portion, the other end edge opposite to the one end edge is movably configured, and the one end edge and the other end are configured according to the position of the other end edge A portion between the edges is pivotally connected to the base portion using a surrounding pin capable of tightly fastening the peripheral surface of the first rod together with the base portion, and a pivot pin, and the other end A switch having a connecting end connected to the edge and an operating end on the opposite side of the connecting end;
By operating the operation end, the position of the other end edge of the connecting end and the surrounding portion can be moved to tightly tighten the peripheral surface of the first rod or loosen the tightening. When the tightening of the surrounding portion to the peripheral surface of the first rod is loosened, each of the second connectors can slide along the first rod and change its position. The wheelbarrow according to claim 3. A handcart having a cart frame unit and a loading unit detachably connected to the cart frame unit by a connector means,
A swinging grip is attached to the loading unit so as to be rotatable so that it can be switched between a sideways position and a vertical position.
Further, the connector means is interlocked with the rotation of the swing grip, and when the swing grip reaches the sideways position, the loading unit is locked to the cart frame unit, and the swing grip is moved to the vertical position. A wheelbarrow characterized by being arranged and configured to release the locking when reaching a position.

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