JP6592323B2 - Rear car - Google Patents

Description

  The present invention relates to a rear car used for transporting various kinds of luggage and the like, and more particularly, to a rear car capable of regulating the rotation of tire wheels during parking.

  Conventionally, a rear car used as a transport vehicle for various kinds of luggage is disclosed in, for example, Patent Document 1. The rear car includes a flat loading platform on which loads are loaded, side portions disposed on both sides in the width direction of the loading platform, front and rear portions disposed before and after the loading platform, and a front end of the side portion. It is comprised by the tow handle etc. which were arrange | positioned. In addition, tire wheels are rotatably attached to the outer surface of the side portion, and legs that can contact the road surface are disposed on the lower surfaces of both front ends of the side portion.

JP 9-99796 A

However, in such a rear car, the tire wheels arranged on the outer surface of the side are always rotatable, so when parking the rear car, the traction handle is lowered and the legs are brought into contact with the road surface. It is done by letting. For this reason, for example, when the rear car is parked on an inclined road surface, the road surface gets wet due to rain, etc. The contact force (contact pressure) of the legs with respect to the road surface may be weakened and the rear car may move along the slope of the road surface, and it may be difficult to securely park the rear car at a predetermined position.

  Further, since the legs that contact the road surface are disposed only on the lower surface of the front part of the cargo bed, for example, when a heavy load is to be loaded from the rear part of the cargo bed, the rear part of the cargo bed is inclined downward and comes into contact with the road surface. At the same time, the traction handle may suddenly rotate upward, and the rear car may be inconvenient, for example, when two people need to perform loading work or pay close attention to the loading work.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a rear car that can regulate the rotation of tire wheels and can easily obtain a stable parking state regardless of the form of the road surface. It is to provide. In addition to the above object, another object is to provide a rear car that regulates the contact of the rear part of the loading platform to the road surface when loading the load, and can perform loading work easily and safely and has excellent usability. .

To achieve the above object, the invention according to claim 1 of the present invention includes a bed portion Tan Taira, are disposed on both sides in the width direction of該荷base portion wheels of the outer surface is rotatably mounted A pair of left and right side wall members, a leg disposed at the lower end of the side wall member, a front wall member and a rear wall member disposed before and after the loading platform, and disposed on both sides of the front end of the loading platform. that includes a handle and, the, outside surfaces of the hand of the pair of side wall members between the handle in front of the tire wheel, and arranged bicycle mechanism for restricting the rotation of the tire wheel, the stationed The wheel mechanism pulls up the operation part disposed on the one outer surface, so that the tire pressing part provided in the link mechanism connected to the operation part moves in the tire wheel direction and the outer peripheral surface of the tire wheel. It is characterized in that the rotation is restricted by abutting on the surface.

The invention according to claim 2 is characterized in that the tire pressing portion of the parking mechanism abuts on the outer peripheral surface of the lower half of the handle side from a horizontal line connecting the axis of the tire wheel.

Also, an invention according to claim 3, the lower surface of the rear end side portions of the cargo unit, arranged foldable tilting preventing mechanism for regulating the tilt in the road surface direction of the loading platform rear end, the tilting The height position of the lower end of the contact plate of the rod of the prevention mechanism is set to be higher by a predetermined dimension than the height of the leg .

According to the invention described in claim 1 of the present invention, the outer surface of a given side wall member between the handle in front of the tire wheels, by the tire pressing portion moves in operation of the operating section, the tire pressing Since the wheel parking mechanism that regulates the rotation of the tire wheel is provided by contacting the outer peripheral surface of the tire wheel, the rotation of the tire wheel is controlled by operating the parking mechanism disposed near the handle. It can be regulated (blocked), and a stable parking state of the rear car can be easily obtained regardless of the form of the road surface.

Also , by pulling up the operating part of the parking mechanism, the tire pressing part of the link mechanism connected to the operating part moves in the direction of the tire wheel and comes into contact with the outer peripheral surface of the tire wheel. Since it can be configured with a link mechanism, it can be formed simply and inexpensively, and the operability of the parking mechanism can be improved.

According to the invention described in claim 2 , in addition to the effect of the invention described in claim 1, the outer peripheral surface of the lower half of the steering wheel side of the horizontal line connecting the tire pressing portion of the parking mechanism to the axis of the tire wheel. Therefore, the rotation of the tire wheel can be reliably and effectively prevented, and a more stable parking state can be easily obtained.

Further, according to the invention described in claim 3 , in addition to the effect of the invention described in claim 1 or 2 , the tilt of the rear end of the load carrier part in the road surface direction is restricted on the lower surface of both sides of the rear end of the load carrier part. The anti-tilt mechanism that folds is arranged so that it can be folded. By operating the anti-tilt mechanism when loading the load, it is possible to regulate (block) the contact with the road surface due to the tilt of the rear part of the loading platform, and to A rear car with excellent usability can be obtained, for example, it can be done easily and safely by one person.

The perspective view which shows one Embodiment of the rear car concerning this invention The top view Side view Front view of the bicycle parking mechanism Perspective view of the tilt prevention mechanism

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
1 to 5 show an embodiment of a rear car according to the present invention. As shown in FIGS. 1 to 3, the rear car 1 includes a cargo bed portion 2 having a rectangular shape in plan view, a pair of side wall members 3 erected on both sides in the width direction of the cargo bed portion 2, and front and rear sides of the side wall member 3. A front wall member 4 and a rear wall member 5 disposed between the end portions in a standing state, a handle 6 disposed at the front end portion of the both side wall members 3 for moving the rear car 1 forward or backward, and the like These are configured to be foldable as will be described later.

  Further, tire wheels 8 each having a tubeless tire supported and protected by a wheel frame 7 are rotatably attached to the outer surfaces of the pair of left and right side wall members 3. And this rear car 1 is comprised so that each member can be folded. That is, the loading platform 2 can be folded upward in a mountain shape by a hinge provided on the back surface at the center in the width direction, and the lower ends of the side wall members 3 are respectively hinged at both ends of the loading platform 2 in the width direction. It is connected so that it can be folded (rotatable).

  Each of the front wall member 4 and the rear wall member 5 has a left and right vertical frame 9 and a horizontal frame 10 connecting the upper and lower sides of the vertical frame 9. The vertical frame 9 is a front and rear end of each side wall member 3. A support plate 11 having a U-shaped cross section provided inwardly on the part is fitted and supported so as to be detachable from above. Further, locking portions for placing the stretcher 12 indicated by the two-dot chain line in FIGS. 2 and 3 on the rear car 1 of the present invention at the upper part of the widthwise ends of the front wall member 4 and the rear wall member 5. 13 are provided.

  The handle 6 is formed by bending an aluminum pipe, and includes a gripping portion 6a, a pair of support portions 6b extending from both ends of the gripping portion 6a to the rear side, and obliquely downward and rearward from the middle of the support portion 6b. Is formed in a substantially U-shape in plan view. The handle 6 has a pair of fitting portions provided vertically downward at the rear end of the support portion 6a. The handle 6 is fitted in a fitting hole of the handle support portion 14a fixed to the upper front ends of the side wall members 3. At the same time, the fitting portion at the rear end of the stay portion 6c is fitted into a handle support portion 14b fixed to the lower end of the side wall member 3, and the operation bolt 15 provided on both handle support portions 14a and 14b is tightened. Each is fixed.

  The gripping portion 6a is fitted to the tip of the support portion 6b and fixed with a bolt (not shown). The gripping portion 6a is removed from the support portion 6b and the operation bolt 15 is loosened to loosen the support portion 6b and the stay. By rotating the portion 6c in the horizontal plane around the handle support portion 14a, the pair of support portions 6b and the stay portion 6c that are divided are positioned, for example, above the side surfaces of the side wall members 3, that is, folded. It is supposed to be. By pulling or pushing the handle 6, the rear car 1 moves in a predetermined direction.

  The rear car 1 configured as described above is folded as follows. First, the front wall member 4 and the rear wall member 5 are lifted upward, pulled out from the support plate 11 and removed from between the side wall members 3. Further, the gripping portion 6a of the handle 6 is removed from the support portion 6b, and the support portion 6b and the stay portion 6c, whose distal ends are freed, are loosened with the operation bolts 15 and rotated above the both side wall members 3. Then, the center of the loading platform 2 is lifted upward to be in a mountain folded state, and the loading platform is folded in a mountain fold between both side wall members 3 that are foldably connected to both ends in the width direction of the loading platform 2. 4 is positioned.

  Thereafter, the removed front wall member 4 and rear wall member 5 are stored (or stored in a separate place) in the gap between the pair of folded cargo bed portions 2 and both side wall members 3, and are removed in a plan view. Both ends of the grip portion 6a of the handle 6 are inserted into a pair of support pipes 16 (see FIG. 1) fixed at predetermined positions on the outer surfaces of the upper ends of the side wall members 3 from above. Thereby, the opening of the loading platform 2 and the side wall members 3 in the folded state is prevented, and the rear car 1 folded in this state is obtained.

In the rear car 1, a parking mechanism 18 is disposed in front of the tire wheel 8 of one side wall member 3 (right side in FIG. 1). As shown in FIG. 4, the bicycle parking mechanism 18 includes a link mechanism 19, an operation unit 20, a tire pressing unit 21, and the like. The link mechanism 19 includes three link plates 19b to 19d that are fixed to the outer surface of one side wall member 3 (or the loading platform 2) via a pair of fixing plates 19a and are rotatably connected to each other. Yes.

The operation unit 20 is formed in a rod shape, and its lower end is connected to a connecting portion between the link plate 19b and the link plate 19c of the link mechanism 19, and has a knob 20a at the upper end and is fixed to the outer surface of the side wall member 3. It is guided by the guide member 20b. Furthermore, the tire pressing section 21, with its base end portion is formed into a rod is fixed to the link plate 19c, diameter large abutment portion 21a provided at the tip portion is extended toward the tire wheel 8 direction Yes.

And in the non-operation position which pushed down the operation part 20 shown with the continuous line of FIG. 4, the tire press part 21 reverse | retreats and the predetermined clearance gap is ensured between the contact part 21a and the tire wheel 8, and a tire wheel The rotation of 8 is free. In this state, by pulling upward (arrow b direction in FIG. 4) by grasping the knob 20a of the operation portion 20, each link plate 19b~19d is rotated as indicated by the two-dot chain line in FIG. 4, the tire pressing The part 21 advances forward, and the contact part 21a contacts the outer peripheral surface of the tire wheel 8 with a predetermined pressure.

As a result, the rotation of the tire wheel 8 is restricted (blocked), and the rear car 1 can be parked at a predetermined place. At this time, the contact position of the tire pressing portion 21 with the tire wheel 8 is lower than the horizontal line that horizontally connects the axis 8a (see FIG. 2) of the wheel 8 in front of the rotation direction B of the tire wheel 8. Therefore, the rotation of the tire wheel 8 is surely restricted by the tire pressing portion 21. In FIG. 1 to FIG. 3, the bicycle parking mechanism 18 is covered with a cover 22 for the sake of convenience. However, the cover 22 is not always necessary and may be omitted.

  Further, as shown in FIG. 3, the rear car 1 is provided with tilt prevention mechanisms 23 on the lower surfaces of the rear end sides of the side wall members 3 (or the loading platform 2). As shown in FIG. 5, the tilt prevention mechanism 23 includes a cylindrical or pipe-shaped rod 23b having a contact plate 23a at the lower end, a support fitting 23c that rotatably supports the upper end of the rod 23b, a rod And a spring 23e disposed between the locking bar 23d of 23b and the locking bar 24 of the side wall member 3.

  Then, from the solid line position of FIG. 5 which is the operation position of the tilt prevention mechanism 23, the rod 23b is pushed and rotated as shown by an arrow C with a foot or hand, so that the rod 23b is indicated by a two-dot chain line in FIG. The side wall member 3 is folded to the lower side and set to the storage position. In this storage position, the tilt prevention mechanism 23 is not involved in any travel or tilting operation of the rear car 1.

  The spring 23e of the tilt prevention mechanism 23 holds the rod 23b in the retracted position, and is rotated 90 degrees or more in the direction of the opposite arrow against the urging force, whereby the rod 23b is shown by a solid line. It is designed to hold in position. Further, the height position of the lower end of the contact plate 23a of the rod 23b is a predetermined dimension from the height of the legs 25 (see FIGS. 1 and 3) fixedly disposed at the lower end of the side wall member 3 shown in FIG. When the rear car 1 is tilted (tilted) to the rear side (rear wall member 5 side) and the contact plate 23a contacts the road surface R, the rear car 1 becomes substantially parallel to the road surface R, for example. Is set to

  The height position of the contact plate 23a may be a fixed position in advance. For example, the rod 23b may be disposed so as to be able to advance and retreat, and the position thereof may be adjusted. In the rear car 1, almost all of the members are made of aluminum or aluminum alloy to reduce the weight.

  Next, according to the method of using the rear car 1 according to the present invention, for example, when a disaster occurs, the stretcher 12 on which an injured person is placed is placed on the rear car 1 and the injured person is moved to a safe evacuation site. This will be described as an example. When an injured person is to be moved to a safe place, first, the folding rear car 1 stored in a disaster prevention warehouse or the like in the district and the folding stretcher 12 are taken out and the rear car 1 in a folded state is taken out. Are assembled into the state shown in FIG. At this time, the parking mechanism 18 of the rear car 1 is operated to restrict the rotation of the tire wheel 8 and the tilt prevention mechanism 23 is set to the operating position.

  In this state, an injured person is placed on the stretcher 12, and the rescuer lifts the stretcher 12 with two rescuers. The bicycle is in the nearby parking state (the leg 25 is in contact with the road surface R and the parking mechanism 18 is in the activated state). 3 on the engaging portions 13 of the front wall member 4 and the rear wall member 5 of the rear car 1 in which the rotation is restricted and the tilt prevention mechanism 23 is in the activated state as shown in FIG. Each support frame is placed. Thereby, the movement of the stretcher 12 in the width direction is restricted by the locking portion 13, and the stretcher 12 is stably placed on the rear car 1.

  Further, when the stretcher 12 is placed on the rear car 1, if the injured person's head is placed on the rear side of the rear car 1, the load on the rear part of the loading platform 2 of the rear car 1 increases. The rear part tends to tilt in the direction of the road surface R. This tilting is regulated by the contact plate 23a of the tilting prevention mechanism 23 in the activated state coming into contact with the road surface R, and the rear car 1 tilts greatly rearward. There is no such thing and it is maintained in a substantially horizontal state.

  At the same time, when the stretcher 12 is placed on the rear car 1, even if the road surface R is inclined or the road surface R is wet due to rain or the like and is slippery, the operating wheel parking mechanism 18 causes the tire wheel to move. Since 8 is set so as not to rotate, the rear car 1 does not easily move along the inclined road surface R. Thus, the work of placing the stretcher 12 on which the injured person is placed on the rear car 1 can be performed safely and easily.

  When the stretcher 12 is placed on the rear car 1, the tilt prevention mechanism 23 is set to the storage position, the parking mechanism 18 is set to the non-operation position, and the grip 6 a of the handle 6 is gripped, The rear car 1 is moved on the road surface R by lifting the handle 6 and setting the rear car 1 in a traveling state substantially parallel to the road surface R as shown by a solid line in FIG.

  During this movement, the rear car 1 is moved by the rotation of the relatively large tire wheel 8, so that the force for movement can be reduced, and the movement by one rescuer is possible, and a break occurs during the moving operation. Even in such a case, by operating the parking mechanism 18, the inadvertent movement of the rear car 1 can be restricted, and the burden on the rescuer involved in the moving work can be reduced.

  As described above, according to the rear car 1, the tire pressing portion 21 is moved by the operation of the operating portion 20 to the outer surface of the side wall member 3 between the steering wheel 6 and the front of the tire wheel 8. Since the bicycle parking mechanism 18 that prevents (prohibits) rotation of the tire wheel 8 by contacting the outer peripheral surface of the tire wheel 8 with the contact portion 21a of the tire wheel 8 is provided, the bicycle parking mechanism provided in the vicinity of the operation unit 20 18, the rotation of the tire wheel 8 can be restricted, and a stable parking state of the rear car 1 can be easily obtained regardless of the form of the road surface R.

  As a result, for example, when the stretcher 12 carrying an injured person is placed on the rear car 1 and moved, or when a relatively heavy load is loaded on the rear part of the loading platform 2, the road surface R is wet. Even if the road surface R is inclined, the movement restriction effect by the bicycle parking mechanism 18 is added in addition to the movement restriction effect of the legs 25, so that the rear car 1 can always be easily parked regardless of the form of the road surface R, etc. And can be suitably used for the rear car 1 for disaster prevention.

  Further, by pulling up the operation portion 20 of the parking mechanism 18, the tire pressing portion 21 provided in the link mechanism 19 connected to the operation portion 20 moves in the direction of the tire wheel 8 and the outer peripheral surface of the tire wheel 8. Therefore, the bicycle parking mechanism 18 can be constituted by the link mechanism 19 or the like, and can be formed with a simple structure at low cost and its operability can be improved. Further, since the tire pressing portion 21 of the bicycle parking mechanism 18 abuts on the outer peripheral surface of the lower half of the tire wheel 8 on the bicycle parking mechanism 18 side, the rotation of the tire wheel 8 is surely and effectively prevented and further stabilized. The parking state can be easily obtained.

  Further, since the tilt prevention mechanism 23 for restricting the tilting of the rear end of the loading platform portion 2 in the direction of the road surface R is foldably disposed on the lower surfaces of both sides of the rear end of the loading platform portion 2 of the rear car 1, By actuating the tilt prevention mechanism 23 when a heavy load is loaded on the loading platform 2, contact with the road surface R due to sudden tilting of the rear of the loading platform 2 can be restricted (blocked) and the handle 6 can be suddenly moved. Therefore, it is possible to easily and safely carry loads such as luggage on the rear car 1.

  Moreover, since the rear car 1 has the latching | locking part 13 for mounting the stretcher 12 each provided in the width direction upper both ends of the front wall member 4 and the rear wall member 5, the stretcher used at the time of disaster occurrence 12 can be stably placed on the rear car 1 at an optimum angle, and the injured person on the stretcher 12 can be transported in a safe and stable posture. At the same time, since the front wall member 4 and the rear wall member 5 provided with the locking portion 13 are detachably disposed on the side wall member 3, the front wall member 4 and the rear wall member 5 are provided as supply parts. Thus, it can be easily applied to an existing folding rear car.

In the above embodiment has been arranged bicycle parking mechanism 18 on one outer surface of the pair of side wall members 3, the present invention is not limited thereto, respectively disposed on the outer surfaces of the pair of side wall members 3 In this case, it is preferable that both the parking mechanisms 18 are operated by the operation of the operation unit 20 provided on one side wall member 3 of the parking mechanism 18. Further, the configuration of the parking mechanism 18 is not limited to the adoption of the link mechanism 19 or the like, and a configuration in which the rotation of the tire wheel 8 is regulated by a pressing portion provided at the tip of the shaft using a cylinder or the like is adopted. You can also.

  In the above embodiment, the rear car 1 has both the parking mechanism 18 and the tilt prevention mechanism 23. However, the rear car 1 has only the parking mechanism 18 or only the tilt prevention mechanism 23. May be. Furthermore, the configuration of each part of the rear car 1, the configuration of the tilt prevention mechanism 23, the configuration of the handle 6 and the like in the embodiment are examples, and for example, the side wall member 3 and the loading platform 2 are not in a plate shape but in a lattice shape, The front wall member 4 and the rear wall member 5 can be appropriately changed without departing from the gist of each invention according to the present invention, such as a plate shape.

  The present invention is not limited to a foldable rear car, and can be used for all rear cars for transportation, such as a rear car that is partially foldable and removable, or a rear car in which all members are fixed.

1 ····· Rear car 2 ······································································・ ・ ・ ・ ・ ・ ・ ・ Rear wall member 6 ・ ・ ・ ・ ・ ・ ・ ・ Handle 8 ・ ・ ・ ・ ・ ・ ・ ・ Tire wheel 12 ・ ・ ・ ・ ・ ・ ・ ・ Stretcher 18 ・ ・ ・・ ・ ・ Parking mechanism 19 ・ ・ ・ ・ ・ ・ ・ ・ Link mechanism 19a ・ ・ ・ ・ Fixing plate 19b ~ 19d ・ ・ ・ Link plate 20 ・ ・ ・ ・ ・ ・ ・ ・ Operation unit 20a ・ ・ ・ ・・ ・ ・ Tip 20b ···················································· Tire pressing portion 21a ········· Contact plate 23b ·······················································…

Claims (3)

The Tan Taira of cargo portion, a pair of left and right side wall members of the tire wheel is mounted rotatably on the outer surface are disposed on both sides in the width direction of該荷base portion, and a leg which is arranged at the distal end lower portion of the side wall member comprises a front wall member and the rear wall member disposed before and after the loading platform portion, and a handle that is disposed on the front end sides of the loading platform part,
Outside surface of the hand of the pair of side wall members between the handle in front of the tire wheel, and arranged bicycle mechanism for restricting the rotation of the tire wheel, the bicycle parking mechanism, the one By pulling up the operating part arranged on the outer surface, the tire pressing part provided in the link mechanism connected to the operating part moves in the direction of the tire wheel and contacts the outer peripheral surface of the tire wheel to rotate it. A rear car characterized by regulation . The bicycle parking mechanism Carts of claim 1, wherein the tire pressing section abuts on the outer peripheral surface of the lower half of the handle side of the horizontal line connecting the axis of the tire wheel. A tilt prevention mechanism for restricting the tilt of the rear end of the load carrier portion in the road surface direction is foldably disposed on the lower surface of both sides of the rear end of the load carrier portion, and the height of the lower end of the contact plate of the rod of the tilt prevention mechanism Carts of claim 1 or 2 position, characterized in that it is set higher predetermined dimension than the height of the leg.

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