JP4322862B2 - Vehicle equipped with retractable loading platform lifting device - Google Patents

Description

  The present invention is configured such that the cradle side is configured to be slidable back and forth between a retracted position below the cradle and a work position behind the cradle along the slide rail through the slide member, and the cradle is folded at least in the front and back The present invention relates to a vehicle equipped with a retractable load receiving table lifting device that is stored in the storage position.

  Conventionally, in a relatively large special vehicle such as a truck, a reflector of a size according to the regulations is attached to the rear part of the vehicle from the viewpoint of preventing a rush accident into the vehicle and ensuring safety during traveling. (For example, refer to Patent Document 1).

  By the way, as a vehicle belonging to the above-mentioned special vehicle, there is a “vehicle equipped with a retractable cargo cradle lifting device”, and this vehicle is also required to be attached with a reflector.

  Specifically, as a vehicle equipped with a retractable load receiving device elevating device, for example, as shown in Patent Document 2, a load receiving device is provided on a vehicle load device via a link mechanism so as to be movable up and down by an elevating means. The load receiving platform side including the mechanism and the lifting / lowering means is configured to be slidable back and forth between the storage position below the loading platform and the working position behind the loading platform along the slide rail through the slide member. What is stored in the storage position in the folded state is provided.

In this case, the reflector is attached to, for example, an appropriate position of an opening / closing door provided at the rear portion of the loading platform or a rear end surface of the folded loading platform.
No. 7-9701 Japanese Patent Application Laid-Open No. 2005-233892

  However, the above conventional devices have the following problems.

  First, when attaching a reflector to the door of a cargo bed, the reflector is restricted to draw a logo or advertisement for the company name, etc. on the door, or the reflector makes the logo or advertisement worse. There was a problem. In addition, when the open / close door is opened, there is also a problem that the reflector is hidden from view when viewed from the rear and does not function.

  Furthermore, when attaching the reflector to the rear end surface of the folded load receiving platform, there is no problem as long as the rear end surface has a thickness sufficient to attach a reflector having a predetermined size. When the thickness is reduced, there is a problem that it is not possible to secure a space for mounting the reflector. The mainstream of this is to reduce the vertical thickness of the folded cradle in order to ensure that the cradle that is stored on sloping ground etc. does not touch the ground. For this reason, the above-described problem occurs.

  The present invention has been made in view of the above problems, and the object of the present invention is to provide a reflector having a predetermined size on the rear end surface even when the vertical thickness of the rear end surface of the folded load receiving base is reduced. An object of the present invention is to provide a vehicle equipped with a retractable load receiving device lifting device that can be mounted in a simple state.

In order to achieve the above object, a vehicle equipped with the retractable load receiving device lifting apparatus of the invention according to claim 1 is provided such that the load receiving table is provided to be lifted and lowered by a lifting means via a link mechanism on the load carrier of the vehicle. The load receiving platform side including the link mechanism and the lifting / lowering means is configured to be slidable back and forth between the storage position below the loading platform and the working position behind the loading platform along the slide rail through the slide member, and the loading platform is a base end side member and it consists freely front part folded to the surface side of the base end side member, in a vehicle having a retractable receiving platform lifting device which is stored in the storage position in a state of being folded in two around a predetermined size One end edge of the mounting stay provided with the reflector is supported on the lower end edge of the rear end surface of the base end member of the load receiving table by a support pin via a bracket so that the support pin can be turned up and down. Between the over, the torsion bar is being interposed to impart biasing force in the upright direction to the mounting stay to rotate up and down when the expansion of receiving platform folded, the reflector, the receiving platform substantially when folded together with being disposed upright along the rear end surface of the proximal member and the distal side member, along the lower surface proximal portion of the distal member upon deploying receiving platform during work is the also Ru are arranged in a horizontal state.

  According to a second aspect of the present invention, there is provided a vehicle equipped with the retractable cargo receiver lifting device, wherein the mounting stay is provided with holding means for holding the mounting stay in a standing state and a substantially horizontal state. is there.

According to the present invention, the mounting stay provided with a reflector of a predetermined size at the rear end of the folded load receiving table is supported so as to be pivotable up and down around the support pin , and the load receiving table is folded. The mounting stay is arranged in a standing state along the rear end surface of the folded load receiving table, and when the load receiving table is unfolded during work, the mounting stay is arranged in a horizontal state along the lower surface of the unfolded load receiving table. By doing so, even when the rear end surface of the folded load receiving table is thin, the reflector can be attached to the rear end surface in a good state, and it is possible to suitably cope with the thinning of the load receiving table. .

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

  FIG. 1 shows a configuration of a vehicle provided with a retractable load receiving device lifting apparatus of the present invention.

  In FIG. 1, reference numeral 1 denotes a loading platform mounted on a vehicle body frame 11, and a retractable loading platform lifting device 2 is provided below the rear end of the loading platform 1.

  The retractable load receiving platform lifting / lowering device 2 includes a slide member 3 provided on the vehicle body frame 11 and a load receiving stand 5 provided on the slide member 3 via a link mechanism 4.

  The slide member 3 is slidable in the front-rear direction along the slide rail 12 disposed in the front-rear direction at the rear end of the vehicle body frame 11.

  Specifically, the slide rail 12 is made of I-shaped steel, and is arranged with the web in the middle thereof being vertical, and the slide member 3 is slidably provided on the slide rail 12 via a slide mechanism (not shown). The slide mechanism includes, for example, a slide pad that is in sliding contact with the upper and lower flanges of the slide rail 12 sandwiched from above and below, a roller that rolls the outer surface of the web of the slide rail 12 in the slide direction, and the like.

  The link mechanism 4 includes a lower link 41 and an upper link 42. The base ends of the lower link 41 and the upper link 42 are pivotally supported on the slide member 3 side, and are lift cylinders as lifting means connected to the slide member 3 side and the middle part of the upper link 42. 43, the upper link 42 is configured to be rotatable up and down.

  A pair of left and right slide rails 12, slide member 3, link mechanism 4, and lift cylinder 43 described above are provided on both sides of the vehicle body frame 11, so that the left and right slide members 3 slide on the slide rail 12 in synchronization. Are linked to by a linking member.

  The load receiving platform 5 includes a distal end side member 51 and a proximal end side member 52. The distal end side member 51 and the proximal end side member 52 are based on a hinge 53 (see FIG. 4). The end member 52 can be folded in two on the surface side.

  The hinge 53 includes two hinge pins 53 a and 53 b at both ends. The hinge pin 53 a is connected to the proximal end of the distal end side member 51, and the hinge pin 53 b is connected to the proximal end of the proximal end side member 52. When the load receiving platform 5 is unfolded by the hinge 53 from the folded state shown in FIG. 3, first, the hinge 53 is rotated around the hinge pin 53b, and the tip side member 51 is shown by a two-dot chain line in FIG. As shown in the figure, the proximal end member 51 and the distal end side member 51 are arranged on the same horizontal plane by the distal end side member 51 pivoting about the hinge pin 53a, and the reverse of the above. By operation, the distal end side member 51 is folded on the proximal end side member 52.

  On the left and right sides of the base end portion of the base end side member 52, the top ends of the left and right upper links 42 are pivotally supported at the top thereof, and the tip portions of the left and right lower links 41 are pivotally supported at the bottom thereof. Yes.

  Further, the tip of the tip side member 51 is formed so as to tilt when the load receiving platform 5 reaches the ground and to be grounded to the ground without a step.

  The retractable load receiving device lifting / lowering device 2 configured as described above is shown in FIG. 1 in a state in which the load receiving stand 5 is folded by an expansion / contraction operation of an extension cylinder (not shown) connected to the load receiving side 1 and the load receiving stand 5 side. The left and right slide members 3 can be placed in the storage position where the slide member 3 is slid to the front end portion of the slide rail 12 and stored, and the slide member 3 is slid to the rear end portion of the slide rail 12 and folded at the work position. The loading platform 5 is developed, and the loading platform 5 can be moved up and down between the ground and the floor surface of the loading platform 1 in this unfolded state.

  By the way, the vehicle provided with the retractable load receiving device lifting / lowering device 2 configured as described above is provided with a mounting stay 6 that forms the main part of the present invention as shown in FIGS. 1 and 2. The attachment stay 6 will be specifically described with reference to FIGS.

  The mounting stay 6 is for attaching a reflector 7 having a predetermined size suitable for the standard, and is a rear end surface of the folded load receiving platform 5, that is, a rear end surface of the front end side member 51 and the base end side member 52 when folded. It is provided so that it may be arranged up and down along.

  Specifically, one end edge on both sides of the mounting stay 6 (the lower end edge side when the load receiving stand 5 is folded and the mounting stay 6 is placed in the standing state) is the bracket 62 on the lower end edge of the rear end surface of the base end side member 52. And is supported by the support pin 61 so as to be rotatable up and down (front and rear).

  One end of the wire 63 is connected to the other end edge of the mounting stay 6, and the other end of the wire 63 is connected to the distal end side member 51. This wire 63 is provided to hold the mounting stay 6 placed in the upright state when the load receiving platform 5 is folded, and the mounting stay 6 placed in the upright state rotates backward. It is stretched on both sides to prevent it from moving.

  Further, a torsion bar 65 is interposed between the support pin 61 and the mounting stay 6 as shown in FIG. The torsion bar 65 is used to apply a biasing force in the upright direction to the mounting stay 6 that rotates downward when the folded load receiving platform 5 is unfolded. One end of the torsion bar 65 is connected to the support pin 61. In addition, the other end is connected to the lower end of the middle part of the mounting stay 6, and twisting is caused in the middle part of the torsion bar 65 as the mounting stay 6 rotates from the standing state to the horizontal state. The urging force described above is generated by the reaction force of torsion.

  By providing the torsion bar 65 in this way, when the load receiving platform 5 is expanded and the distal end side member 51 is arranged on the same plane with respect to the proximal end side member 52 as shown in FIG. It is arranged in a horizontal state along the lower surface of the base end portion of the distal end side member 51 so as to be biased upward around the support pin 61, and this state is maintained.

  Therefore, the mounting stay 6 is arranged in a standing state along the rear end surface of the folded load receiving stand 5 when the load receiving stand 5 is folded as shown in FIG. When the load receiving platform 5 is expanded, the horizontal position is arranged along the lower surface of the expanded load receiving platform 5.

  Further, a cushion material 66 is provided at an appropriate position on the back surface of the mounting stay 6, and when the mounting stay 6 is arranged in an upright state as described above, the load receiving platform 5 (the folded proximal end side member 52 and the distal end side). The member 51) abuts on the rear end surface, and when the mounting stay 6 is disposed in a horizontal state, it abuts on the lower surface base end portion of the front end side member 51 of the load receiving base 5 so as to alleviate the impact or the like. ing.

  Next, the operation of the retractable load receiving table elevating device 2 configured as described above will be described.

  First, in the state in which the retractable load receiving device lifting device 2 is disposed at the retracted position stored below the load carrier 1 as shown in FIG. 1, the mounting stay 6 is disposed in an upright state along the rear end surface of the folded load receiving stand 5. Has been. As a result, the reflector 7 attached to the attachment stay 6 is disposed so as to protrude rearward, and thus, functions such as preventing a rush accident into the vehicle are satisfactorily performed.

  Next, in order to arrange the retractable load receiving table lifting device 2 from the retracted position to the working position, the telescopic cylinders are respectively extended. By the extension operation of the telescopic cylinder, the left and right slide members 3 are moved along the left and right slide rails 12 to the rear end side of the cargo bed 1 through the slide mechanism, whereby the entire retractable load receiving table lifting device 2 is loaded. It slides to the rear end side and is arranged at the working position.

  When the retractable load receiving device lifting / lowering device 2 is arranged at the work position in this way, first, the folded load receiving stand 5 is once lowered to the lower ground or near the ground, and then the front end side of the folded load receiving stand 5 The member 51 is rotated backward, and the distal end side member 51 is deployed so as to be on the same horizontal plane as the proximal end side member 52. As a result, the load receiving platform 5 can move up and down between the ground and the floor surface of the loading platform 1 by the expansion and contraction operation of the lift cylinder 43. Unloading work can be performed.

  At this time, the mounting stay 6 is disposed in a horizontal state along the bottom surface of the proximal end portion of the distal end side member 51 and is urged in a direction to rotate upward by the torsion bar 65. Holds stably.

  Next, when the loading and unloading work is completed and the retractable load receiving device lifting / lowering device 2 is stored, the retractable load receiving device lifting / lowering device 2 is arranged from the working position to the retracted position by the reverse operation to the operation described above. . That is, in the working position, the load receiving platform 5 is folded in half by rotating the front end side member 51 forward on or near the ground, and is placed at a predetermined height for storing the load receiving platform 5 in this state. It is made to slide below the loading platform 1 along the slide rail 12 through the member 3, and arrange | positions in a storage position as shown in FIG.

  As a result, the mounting stay 6 is arranged in a standing state along the rear end surface of the load receiving platform 5 folded as described above, and the reflector 7 attached to the mounting stay 6 prevents an accidental entry into the vehicle. It is designed to perform well.

  Thus, by providing the mounting stay 6 on the load receiving base 5 and attaching the reflector 7 to the mounting stay 6, the reflector 7 is attached to the rear end face even when the rear end surface of the folded load receiving base 5 is thin. It can be attached in a good state, and can suitably cope with a reduction in the thickness of the load receiving tray 5.

  Note that the above-described embodiment is merely a preferred embodiment of the present invention, and the present invention is not limited to this, and various design changes can be made within the scope thereof.

  For example, although the description has been given with respect to the cradle 5 that can be folded in half, the cradle 5 may be folded in two or more, such as a trifold.

  In the present embodiment, the mounting stay 6 rotates about the support pin 61 connected to the lower end edge. However, the hinge position is set so as to rotate about the upper end edge side of the mounting stay 6. May be provided upside down.

  Further, the mounting stay 6 is not particularly limited in its shape and arrangement as long as the reflector 7 can be disposed as described above in accordance with the folding operation and the unfolding operation of the load receiving platform 5.

It is a side view which shows the structure of the vehicle provided with the retractable cargo receiving stand raising / lowering apparatus of this invention. It is a rear view which shows the structure of the vehicle provided with the retractable cargo stand raising / lowering device. It is a partially expanded side view which shows the attachment stay arrange | positioned in the standing state along the rear-end surface of the folded load receiving stand. It is a rear view which similarly shows the attachment stay arrange | positioned in the standing state. It is a partially expanded side view which shows the attachment stay arrange | positioned in a horizontal state when a load receiving stand is expand | deployed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Loading platform 12 Slide rail 2 Retractable loading platform raising / lowering device 3 Slide member 4 Link mechanism 43 Lift cylinder (elevating means)
5 Receiving platform 6 Mounting stay 7 Reflector

Claims (2)

A loading platform is provided on the vehicle platform via a link mechanism so as to be movable up and down by a lifting mechanism, and the loading platform side including the link mechanism and the lifting mechanism is placed along the slide rail through the slide member and the storage position below the loading platform and the rear of the loading platform The load receiving base is composed of a base end side member and a front end side member that is foldable on the surface side of the base end side member, and is folded in two back and forth. In a vehicle equipped with a retractable load receiving device lifting device that is stored in a storage position in a state, one end edge of a mounting stay provided with a reflector of a predetermined size is a bracket on the lower end edge of the rear end surface of the base end side member of the load receiving stand The support pin is supported by the support pin so that it can be rotated up and down, and between the support pin and the mounting stay, when the folded load receiving table is unfolded, the mounting stay is rotated up and down in the upright direction. A torsion bar which imparts a biasing force is being interposed, the reflector together when folded receiving platform is located in the standing state along the rear end surface of the proximal member and the distal end member, work vehicle upon deploying receiving platform is provided with a retractable receiving platform lifting device, wherein the benzalkonium is disposed substantially horizontally along the base end portion lower face of the front part at the time.   2. The vehicle having a retractable load receiving device lifting apparatus according to claim 1, wherein the mounting stay is provided with holding means for holding the mounting stay in an upright state and a substantially horizontal state.

Images