JP2013067214A - Cargo receiving platform elevating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cargo receiving platform elevating device allowing a desired-area reflecting plate to be mounted thereon while avoiding the interference with a cargo receiving platform.SOLUTION: The cargo receiving platform elevating device includes a cargo receiving platform base, a cargo receiving platform front edge foldable and deployable via a pair of hinges arranged on the cargo receiving platform base in the cross direction, a reinforcing part arranged on the bottom face of the cargo receiving platform front edge extending in the longitudinal direction for supporting the cargo receiving platform front edge, a mounting stay supported on the cargo receiving platform base via supporting pins turnably in the vertical direction, and spring members mounted between each of the supporting pins and the mounting stay for upwardly energizing the mounting stay. At the cargo receiving platform front edge, thrusting parts are provided for thrusting the mounting stay to be donwardly turned during deployment. The mounting stay is supported at the lower part of the deployed cargo receiving platform front edge in a falling attitude inclining up toward the rear side of a vehicle by portions of the thrusting parts and the supporting pins, and its front end is arranged at a position of overlap with a reinforcing material in view from the side of the cargo receiving platform front edge.

Description

  The present invention relates to an attachment stay for attaching a reflector to a cradle that is folded below a cradle of a vehicle.

  2. Description of the Related Art There is a load receiving table lifting device that is mounted on a vehicle and is used for loading and unloading loads, and the load receiving table is folded to enter a retracted state (a vehicle travelable state) below the load carrier. In this load receiving table lifting device, the rear surface portion of the folded load receiving table is also used as a rear collision prevention member (bumper), and a reflector may be attached to the rear surface in order to ensure safety during vehicle travel. Many.

  The rear surface portion to which the reflecting plate is attached is a portion formed by folding the load receiving base with respect to the load receiving base, and both end surfaces of the load receiving base and the load receiving front are close to each other when the load receiving base is unfolded. Therefore, in the load receiving platform lifting apparatus according to Patent Document 1, the mounting stay with the reflection plate attached to the surface is raised when the load receiving stand is folded, and the load receiving stand is unfolded so that the reflection plate and the end face of the load receiving stand front end do not interfere with each other. The structure which falls down is described. The mounting stay is rotatable around a support pin at the lower end of the load receiving base, and is urged in a standing direction by a torsion bar.

  In addition, as in the load receiving platform lifting apparatus according to Patent Document 2, the end of the load receiving base is developed with a gap so that the load receiving tip does not interfere with the load receiving base, and a reflector is attached. Describes a fixed mounting stay. The upper part of this mounting stay is processed to be thick in order to fill the gap during deployment.

JP 2007-137271 A JP 2009-101725 A

  When the receiving platform is folded, the reflector is exposed to the rear so that it can be seen from the rear, but in order to increase the reflector to improve safety, the mounting stay as described above There is room for improvement.

  The mounting stay according to Patent Document 1 is characterized in that it rises with the folding of the load receiving platform and falls horizontally with the deployment of the loading platform, but it is not necessary to focus on the operation of standing and falling. On the other hand, the mounting stay cannot be expanded. For example, since a pair of hinges that contribute to folding and unfolding are arranged side by side in the width direction of the load receiving table, expansion of the length of the mounting stay in the width direction is restricted. Further, if the lower end portion of the mounting stay is extended, it protrudes below the load receiving table when standing up, which is not preferable in terms of the departure angle. Furthermore, if the upper end of the mounting stay is extended, when loading / unloading a load to / from the load receiving table, the load receiving table has a posture in which the tip end side is inclined downward, so that the extended portion may come into contact with the ground. is there.

  Regarding the mounting stay according to Patent Document 2, the area of the mounting stay is limited by the area of the end of the load receiving base because it is fixed to the load receiving base. Specifically, the upper end of the mounting stay must not protrude from the load placement surface of the load receiving base, and if the lower end extends from the load receiving base, the distance between the load receiving base and the ground decreases, and The aperture angle also becomes smaller. In addition, in many cases, the load receiving platform is configured to have a thickness that decreases from the front to the rear of the vehicle. Although the area of the mounting stay can be increased as the folding position is closer to the front side of the vehicle, there is a possibility that the predetermined area is not reached if it is on the rear side of the vehicle. Furthermore, if thinning is adopted in the configuration of the load receiving stand, it becomes difficult to use an attachment stay having a predetermined area.

  The present invention has been made in view of these points, and an object of the present invention is to provide a load receiving table lifting device capable of attaching a reflector having a desired area and avoiding interference with the load receiving table.

  In the present invention, the above-described problems can be solved by using the following means.

  A load receiving base, a load receiving base that can be folded and unfolded via a pair of hinges arranged in the width direction with respect to the load receiving base, and a bottom surface of the load receiving base extending in the front-rear direction. A reinforcing portion that supports the load receiving base, a mounting stay that is supported to be pivotable in the vertical direction with respect to the load receiving base via a support pin, and an interposition between the support pin and the mounting stay. And a spring member that urges the mounting stay to rotate upward, and presses the mounting stay at the tip of the load receiving base when the mounting stay is unfolded. And the mounting stay is supported by a part of the pressing portion and the support pin in a lying posture inclined upward with respect to the vehicle rear side below the unfolded front of the load receiving platform. The reinforcement is seen from the side of the tip of the load receiving base. The configuration of the receiving platform lifting device which is disposed in superimposed position on.

  In this case, it is further desirable to have the following configuration. When the cargo receiving platform front portion is deployed, the bottom surface of the reinforcing portion is inclined upward toward the rear, and a part of the pressing portion is provided above the support pin, and the pressing portion A part of is provided at a position inclined with respect to the support pin at an angle substantially coincident with the inclination angle of the bottom surface of the reinforcing portion.

  By substantially matching the inclination angles, for example, even if the upper end of the standing mounting stay is extended, the state of overlapping with the reinforcing portion as seen from the side does not change. Therefore, even if the area of the mounting stay is enlarged, it is possible to avoid the contact with the ground while being in a lying posture at the time of unfolding the load receiving base.

  In addition, the load receiving base may be configured such that the mounting stay is attached to an outer portion of the rear end portion than the pair of hinges, and the spring member is wound around the support pin. desirable. This is because the outer portion of the pair of hinges is a narrower region than the central portion, and therefore a torsion bar or the like cannot give an appropriate rotational biasing force to the mounting stay. In other words, by providing the spring member, the mounting stay can be arranged in the vehicle width direction, and the visible region of the reflector attached to the mounting stay can be enlarged.

  Furthermore, in the support pin, it is desirable that the portion around which the spring member is wound has a smaller diameter than other portions. The “other portion” includes not only a support pin that supports the mounting stays disposed on the outer portions of the pair of hinges, but also a support pin that supports the mounting stay disposed in the center. This is to prevent the outer dimension of the “spring member” being wound from becoming large, and to avoid contact with the ground in the unfolded state of the load receiving tip.

  In addition, it is good also as a structure where the cylindrical body extended in the width direction is provided in the said edge part by the side of a pair of said load receiving stand, and the said press part is provided in the said cylindrical body. . For example, there may be a case where a spring member or the like for energizing the rotation of the load receiving base is separately provided in the region where the cylindrical body is arranged. Aging deterioration due to the influence of can be suppressed.

  As in the present invention, when the mounting stay biased so as to rotate upward by the spring member is set to the lying down position along with the unfolding of the load receiving base, the mounting stay is directed toward the rear of the vehicle. The mounting stay does not protrude from the reinforcing part when viewed from the side of the load receiving base part. Since the reinforcing portion contacts and supports the ground when the load receiving platform tip contacts the ground, the mounting stay enters a gap between the ground and the load receiving platform and does not contact the ground. In particular, since the mounting stay is supported by the support pin and the portion supported by the pressing portion, there is no portion that protrudes from the reinforcing portion in the mounting stay unless the tip portion protrudes from the reinforcing portion. Further, in order to enlarge the reflection plate attached to the attachment stay, even if the tip portion is extended, it does not protrude as long as the reinforcing portion and the tip portion are set to overlap.

  In addition, in order to increase the area of the reflector in the vehicle width direction, when a mounting stay is newly provided outside the pair of hinges, the mounting stay is raised in the upright direction via a winding spring wound around the support pin. By adopting a configuration in which an urging force is generated, the mounting stay can be compactly arranged at the end of the load receiving table that is a narrow region.

It is a side view of the load receiving table raising / lowering apparatus which concerns on embodiment of this invention. It is a rear view of the load receiving stand of the folded state which concerns on embodiment of this invention. It is a principal part side view of the load receiving stand which shows the attachment part of the attachment stay which concerns on embodiment of this invention. It is a principal part side view which shows the expansion | deployment operation | movement of the cargo receiving stand which concerns on embodiment of this invention.

  An example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view of a load receiving table lifting apparatus 100 that moves up and down behind the vehicle. In the load receiving platform lifting apparatus 100, the slide member 3 is provided so as to be slidable in the vehicle front-rear direction (left-right direction in the drawing) with respect to the chassis frame 2 that supports the load platform 1, and one end side of the link mechanism 4 is provided on the slide member 3. The load receiving platform 5 is supported on the other end side of the link mechanism 4.

  As shown in FIG. 1A, the slide member 3 is slid to the rear end position of the chassis frame 2. At this time, the load receiving platform 5 has a horizontal upper surface and is in a working state that can be moved up and down by the link mechanism 4.

  The left and right slide members 3 are respectively attached to the chassis frame 2 and are connected by a connecting member (not shown) so as to slide the slide rail 6 in synchronization. A slide cylinder 8 is used as means for sliding the slide member 3.

The link mechanism 4 includes a tilt arm 42 that is pivotally supported on the first support bracket 41 via a connecting shaft 4a. On the upper side of the tilt arm 42, the base end of the lift arm 43 is connected to the support member 44 via the tilt arm 42 and the first support bracket 41. Note that the load receiving platform 5 is rotatably connected to the tip of the lift arm 43.
A lift cylinder 45 is disposed below the lift arm 43, one end of which is pivotally supported by the tilt arm 42 and the other end is pivotally supported by the lift arm 43.

  The load receiving platform 5 includes a load receiving platform base 51, a load receiving platform tip 52, and a load loading portion 53. The load receiving platform base 51 is supported by a lift arm 43, and the load receiving platform base 52 is located with respect to the load receiving platform base 51. The luggage loading portion 53 is configured to be foldable (can be folded in three) with respect to the cargo receiving tray front portion 52. When the load receiving platform lifting device 100 is not used, the load receiving stand 5 is folded as described above, and the sliding member 3 is slid forward to enter the retracted state (vehicle travelable state) below the load receiving platform 1.

The operation procedure for storing the load receiving platform 5 below the loading platform 1 is as follows. First, the load loading portion 53 is folded to the load receiving platform tip 52 from the state shown in FIG. Lean against (shown). After that, when the lift cylinder 45 for raising and lowering provided in the link mechanism 4 is used, the state shown by the alternate long and short dash line portion in FIG. . At this time, the rear portions of the load receiving base 51 and the load receiving tip 52 serve as a rear collision prevention member (bumper) for the vehicle. An upstanding mounting stay 9 is provided at the rear portion, and a reflector is attached to the surface of the mounting stay 9.
Next, the structure of the mounting stay 9 attached to the cargo receiving stand 5 will be described with reference to FIG.

  FIG. 2A is a rear view of the receiving platform 5 in the retracted state as viewed from the rear of the vehicle. The mounting stay 9 includes a left mounting stay 91, a central mounting stay 92, and a right mounting stay 93 that are attached to the load receiving tray 5 along the vehicle width direction (left and right direction in the drawing). A pair of left and right hinges 54 are provided between the mounting stays 91, 92, 93. Reflecting plates 91a, 92a, 93a that are visible from the rear of the vehicle are attached to the mounting stays 91, 92, 93, respectively. Note that the load receiving base 52 can be folded and unfolded with respect to the load receiving base 51 by the hinge 54.

  The pair of hinges 54 are located outside the chassis frame 2 (see FIG. 1A) in the vehicle width direction. For this reason, the central region where the central mounting stay 92 is disposed between the pair of hinges 54 is formed wide. On the other hand, the outer region where the left mounting stay 91 and the right mounting stay 93 are arranged outside the pair of hinges 54 is formed narrower than the central region. Accordingly, the three mounting stays 91, 92, 93 have substantially the same length in the height direction (the vertical direction in the drawing), but the left mounting stay 91 and the right mounting stay 93 are the central mounting stay 92. The length is small compared with, and it is compact.

  Reinforcing portions 71 and 72 extending in the vehicle front-rear direction so as to cover the portions where the pair of hinges 54 are provided are arranged on the back surfaces (surfaces facing the ground) of the load receiving base 51 and the load receiving base 52, respectively. Has been. The reinforcing portions 71 and 72 have a substantially triangular shape when viewed from the side in a state where the cargo receiving platform 52 is unfolded. That is, the bottom surfaces of the reinforcing members 71 and 72 are configured to be grounded when the front end side of the load receiving platform 5 is inclined downward so that the luggage loading portion 53 (see FIG. 1A) is grounded. By these reinforcement parts 71 and 72, the bending etc. of the load receiving stand 5 along a vehicle front-back direction can be prevented.

  As shown in FIG. 2B in which the one-dot chain line portion of FIG. 2A is enlarged, the center mounting stay 92 can be rotated in the vertical direction by a support pin 55b arranged at the lower end portion of the load receiving base 51. It is supported. The support pin 55b is attached to the lower end edge of the rear end portion of the load receiving base 51 through the bracket 56b. Further, a torsion bar 57 b is interposed between the support pin 55 b and the mounting stay 92. The torsion bar 57b extends in the vehicle width direction, one end is connected to the support pin 55b, and the other end is inserted into the support bracket 92b. The support bracket 92b is bent into a concave shape and fixed to the center mounting stay 92, and the other end of the torsion bar 57b is inserted into the concave portion. As shown in the drawing, when the central mounting stay 92 standing up with respect to the rear surface of the folded load receiving tray 5 is turned to the rear side (the front side in the drawing), the middle mounting stay 92 is placed in the middle of the torsion bar 57b. Since twisting occurs, the central mounting stay 92 generates a biasing force to the standing state by the reaction force of the twisting.

  Since the left mounting stay 91 and the right mounting stay 93 have the same configuration, the left mounting stay 91 will be described as a representative example. The left mounting stay 91 is rotatably supported on the vehicle rear side by a support pin 55a arranged at the lower end of the cargo receiving base 51. As described above, the left mounting stay 91 is narrower than the central mounting stay 92, and the support pins 55a disposed on both left and right ends are also close to each other. A winding spring 57a is wound around the outer periphery of these support pins 55a. Since the winding spring 57a is arranged, the left side mounting stay 91 attached to the narrow region is also urged to rotate in the direction of being in the standing state (the state shown in FIG. 2A) in the same manner as the central mounting stay 92. Can be given.

  The winding spring 57a is formed of a single metal wire, and is installed on the front end side of the pair of left and right support pins 55a facing each other, as shown in FIG. 2C, which is an enlarged view of the main part of the support pin 55a. Has been. The winding spring 57a includes one end 571a and the other end 572a, two winding portions 573a wound around the support pin 55a by a predetermined length away from the one end 571a and the other end 572a, and a metal wire And a bent portion 574a bent at the central portion. One end 571 a and the other end 572 a of the winding spring 57 a are inserted between the mounting bracket 91 c disposed on the left mounting stay 91 and the left mounting stay 91. The mounting bracket 91c is interposed between the left mounting stay 91 fixed by the bolt 91b and the load receiving base 51, and one end 571a and the other end 572a of the winding spring 57a rotate on the vehicle rear side. It regulates that. The bent portion 574a of the winding spring 57a is supported by a support bracket 91d attached to the left attachment stay 91 at an intermediate portion between the pair of left and right attachment brackets 91c. The support bracket 91d is bent into a concave shape, and the bent portion 574a of the winding spring 57a is inserted into the concave portion. The winding part 573a is arranged on the tip side that is reduced in diameter (outer diameter d1) by the support pin 55a, and the other part is enlarged in diameter to the outer diameter d2, thereby restricting the slide of the winding spring 57a. doing. The winding spring 57a is set in advance so that the left side mounting stay 91 is urged to rotate forward in the vehicle even in the standing state as shown in FIG. 2 (a), and the end portions 571a, 572a, The bent portion 574a is in contact with the load receiving base 51 side.

  The winding springs 57a are arranged symmetrically about a vertical line (virtual line) Lc in the middle part between the two support pins 55a. By setting the left and right mounting stays 91 to be tilted to the vehicle rear side from the standing state, the one end 571a, the other end 572a of the winding spring 57a, The bent portion 574a is fixed and supported in a state where the rotation is restricted, and an urging force that urges the left mounting stay 91 in the standing state is generated in the winding portion 573a. By adopting a configuration in which the winding spring 57a is made of a single metal wire as in the present embodiment, it is easy to determine the orientation in which the winding spring 57a is arranged on the two support pins 55a, and the operator can be prevented from misidentifying. The attaching operation of the winding spring 57a can be performed easily and quickly. The winding spring 57a is composed of a single metal wire. However, if the spring 57a is configured to generate an urging force to a standing state, two winding springs composed of two metal wires are formed and each winding is formed. A spring may be wound around the two support pins 55a.

  As shown in the side view of the main part of FIG. 3A, the left-side mounting stay 91 in the upright state has a pad made of an elastic material provided on the front surface of the vehicle as the rear end of the load receiving base 51 and the load receiving base 52. It is supported in a state of contacting the part. In this embodiment, when the load receiving base 52 is folded with respect to the load receiving base 51, both rear end portions are aligned in the vertical direction, so that the pad is in contact with both rear end portions. When one rear end portion is displaced in the front-rear direction with respect to the other rear end portion, the state may be in contact with only the rear end portion located rearward. Since the winding spring 57a is set so as to generate an urging force so as to rotate to the left side in the drawing even when the left side mounting stay 91 is in the standing state, the left mounting stay 91 does not fall backward in the vehicle. .

  The pad 910 is sized to extend a predetermined distance from the contact portion 5201 with the load receiving platform tip 52. Specifically, the upper end 910a of the pad 910 extends from the lower end of the load receiving platform 52 by a height Ph. It is set to the size to put out. As shown in the figure, a gap portion S1 (separated by a distance Dh along the vertical direction) S1 is formed between the load receiving base 51 and the load receiving base 52. Even if the distance Dh is slightly increased, the load receiving is performed. This is for securing a contact portion with the base portion 52.

  Further, a cover member 521 that functions as a step surface for the operator is disposed at the base end side (X direction side) end of the load receiving base 52, and the height of the pad 910 and the left mounting stay 910 is as follows. The cover member 521 is configured not to reach a position exceeding the height Ch. This is because if it exceeds the height Ch, it becomes difficult for the operator to put a foot on the step surface 521a. However, when the cover member 521 is not used as a step surface, the left mounting stay 910 may be set so as to exceed the height Ch of the cover member.

  When the load receiving base 52 is unfolded, the left mounting stay 91 is in a lying state as shown in FIG. At this time, the pressing portion that presses the pad 910 in order to maintain the lying state of the left mounting stay 91 against the urging force of the winding spring 57a becomes a portion 5202 in the step surface 521a. The left mounting stay 91 is supported by the pressing portion 5202 and the support pin 55a in a posture extending obliquely rearward (in the direction of arrow R in the figure) which is an upper side toward the vehicle rear side as shown in the figure. The posture is set according to the relative position between the support pin 55a and the contact portion 5202. For example, when the height Ch of the cover member 521 is reduced, the posture is further inclined obliquely upward.

  In the present embodiment, as described above, the support pin 55a that supports the left mounting stay 91 has a portion formed by reducing the outer diameter d1 (see FIG. 2C). The winding portion 573a of the winding spring 57a is wound around this reduced diameter portion. By providing the support pin 55a with a reduced diameter portion, it is possible to prevent the distance D1 (see FIG. 3A) between the central axis of the support pin 55a and the left mounting stay 91 from being increased. When the distance D1 is enlarged, when the left mounting stay 91 is in the lying down posture as shown in FIG. 3B, the distance from the ground may be close and may come into contact with the ground. By reducing the diameter of the support pin 55a as in the form, it is possible to suppress the expansion of the outer dimension of the winding portion 573a of the winding spring 57a. As a result, an increase in the distance D1 with the left mounting stay 91 that is bent so as to cover the winding spring 57a can also be suppressed. In addition, the part (for example, outer-diameter d2 part) which is not reduced in diameter is set to the bad outer diameter which the support pin 55b (refer FIG.2 (b)) which supports the center attachment stay 92 is taken. By setting the same size, the central mounting stay 92 and the left mounting stay 91 are arranged to overlap at the same position when viewed from the side even in the standing state or the lying state.

  Further, in the present embodiment, the left mounting stay 91 is constantly urged in the standing direction, so that it is stably supported by the support pin 55a and each pressing portion that presses the pad 910. That is, since the connection support member is not arranged between the left mounting stay 91 and the back surface of the load receiving base 52 so as to straddle the cover member 521, the space above the folded load receiving stand 5 is effectively utilized. it can.

Next, the rotation operation of the left mounting stay 91 accompanying the unfolding operation of the cargo receiving platform 5 will be described with reference to FIG. In FIG. 3, for convenience of explanation, the pair of left and right reinforcing members 58 disposed on the back surface of the load receiving platform 5 is omitted, but in FIG. 4, in order to specifically describe the arrangement position of the left mounting stay 91,
it's shown.

  As shown in FIG. 4 (b), the left-side mounting stay 91 is erected in the direction of arrow A1 with respect to the load receiving base 5 folded as shown in FIG. To expand. When the load receiving base 52 is deployed, the cover member 521 is rotated, and the rear end surface presses the pad 910 to rotate in the direction of the arrow. At this time, the load receiving base 52 is unfolded with respect to the load receiving base 51 via the hinge 54. The hinge 54 includes two hinge pins 54 a and 54 b at both ends. The hinge pin 54 a is connected to the base end of the load receiving base 51 and the hinge pin 54 b is connected to the base end of the load receiving base 52.

  As shown in FIG. 4C, when the unfolding angle of the load receiving base 52 increases, the upper corner 521 b of the cover member 521 becomes the pressing portion of the pad 910. When further developed, the cargo receiving platform 52 is erected vertically as shown in FIG. At this time, the hinge pins 54 a and 54 b are arranged horizontally, and the pad 910 is pressed by the corner portion 521 b of the cover member 521.

  When the load receiving platform 52 is further expanded, the corner 521b of the cover member 521 presses the pad 910 while moving toward the support pin 55a so that the pad 910 slides as shown in FIG. Further, as shown in FIG. 4F, when the load receiving platform 52 is expanded until it reaches a horizontal state, another corner 521c of the step surface 521a becomes a contact portion with the pad 910. The left-side mounting stay 91 is in a state of being laid down below the load receiving base 52. At this time, the upper end portion 910a of the pad is supported so as to be higher than the support pin 55a. Furthermore, as shown in the drawing, when viewed from the side of the load receiving base 52, the left mounting stay 91 is inclined upward toward the vehicle rear side so as to be superimposed on the reinforcing portion 7. Specifically, the inclination angle (arrow A3) of the straight line connecting the support pin 55a and the pressing portion 521c that presses the pad 910 in the unfolded state substantially coincides with the inclination angle (arrow A4) of the bottom surface 7 of the reinforcing portion. Thus, the position of the support pin 55a and the size of the cover member 521 are set. If the respective inclination angles (arrows A3 and A4) substantially coincide, even if the upper end of the left mounting stay 91 is extended to enlarge the reflector, the left mounting stay 91 protrudes from the reinforcing portion 7 to the vehicle rear side ( For example, this is desirable because there is no one-dot chain line portion in FIG. As described above, when the left mounting stay 91 is arranged so as to overlap in the region of the reinforcing portion 7 when viewed from the side, the left mounting stay 91 does not contact the ground and is not damaged.

  In particular, in the configuration in which the mounting stays 91 and 92 are biased by the spring members 57a and 57b, the mounting stays 91 and 92 can be easily set in the standing posture and the lying posture only by the operation of folding and unfolding the load receiving base 52. On the other hand, the mounting stay 91 is configured without changing the configuration of the receiving platform 5 and the mounting stays 91 and 92 by setting the inclination angle in the lying posture as in the present embodiment. , 92, 93 can be realized, and the increase in cost can be suppressed.

  With respect to the position of the pressing portion 521c in the state in which the load receiving base 52 is deployed, the height Ch of the cover member 521 is made smaller than the distance Ld from the surface of the load receiving base 51 to the support pin 55a to the pressing portion 521c. The horizontal distance may be increased. Further, the height Ch of the cover member 521 and the distance Ld may be substantially matched, and the step surface 521a may be inclined so that the vehicle rear side is on the upper side with respect to the horizontal direction. This is because a stable urging force is generated on the left mounting stay 91 by the winding spring 57a so as to rotate upward.

  Regarding the urging force with respect to the left mounting stay 91, since it is a narrow region, it is not possible to use a torsion bar extending in the width direction with a certain length at the end, and the torsion bar is adapted to the narrow region. When the length is shortened, the strength becomes weak, and when the diameter is reduced, the desired urging force cannot be obtained. Thereby, in addition to the center mounting stay 92, the left side mounting stay 91 and the right side mounting stay 93 can be arranged, which contributes to an increase in the mounting area of the reflector on the rear side of the vehicle.

  Although the rotation operation has been described using the left mounting stay 91, the central mounting stay 92 and the right mounting stay 93 have the same configuration except for the configuration of the support pins and the difference in the spring member, and the same operation is performed. Done.

  Although the load receiving platform lifting apparatus 100 according to the present embodiment has the above-described configuration, any configuration that contributes to enlarging the reflector attached to the rear end surface of the folded load receiving stand 5 can be used for these configurations. It is not limited.

The support pins 55a and 55b for supporting the mounting stay are not limited to the lower ends of the mounting stays 91 and 92, and may be provided in the middle when the departure angle is not reduced. In this case, the mounting stays 91 and 92 extend downward from the lower end of the load receiving platform 5 when the standing stays 91 and 92 are in a standing state. can do.
In the present embodiment, the load receiving platform 5 has a three-fold structure, but other structures such as a two-fold structure including a load receiving base portion and a load receiving base portion may be used.

Further, when the step surface is unnecessary or when covering with another member is unnecessary, the cover member 521 may not be provided. At this time, the inclination angle of the attachment stays 91, 92, 93 is further increased in a state in which the cargo receiving platform 52 is deployed.
In addition, the mounting stays 91, 92, and 93 may be directly pressed without providing the pad 910.

  The present invention is useful for all types of load receiving platform lifting devices that are folded and stored below the load platform.

DESCRIPTION OF SYMBOLS 1 Cargo base 2 Chassis frame 3 Slide member 5 Cargo stand 6 Slide rail 9 Mounting stay 51 Cargo stand base part 52 Cargo stand base part 53 Cargo loading part 54 Hinge 55a, 55b Support pin 57a Winding spring 57b Torsion bar 521b, 521c Pressing part 91 Left mounting stay 92 Central mounting stay 93 Right mounting stay 910 Pads 91a, 92a, 93a Reflector plate 100 Loading platform lifting device

Claims (5)

A receiving platform base;
A load receiving base that can be folded and unfolded via a pair of hinges arranged in the width direction with respect to the load receiving base;
A reinforcing portion that extends in the front-rear direction on the bottom surface of the load receiving platform portion and supports the load receiving platform portion;
An attachment stay supported so as to be rotatable in the vertical direction via a support pin with respect to the load receiving base,
A spring member interposed between the support pin and the mounting stay to turn and bias the mounting stay upward;
Have
The load receiving platform tip portion is provided with a pressing portion that presses the mounting stay and rotates downward during its deployment,
The mounting stay is supported by a part of the pressing portion and the support pin in a lying posture inclined upward toward the rear side of the vehicle below the unfolded front of the load receiving base, and the tip portion is The load receiving device lifting device, wherein the load receiving device lifting / lowering device is arranged at a position superimposed on the reinforcing material when viewed from the side of the load receiving stand front portion. When the load receiving platform front portion is deployed, the reinforcing portion has a bottom surface inclined upward toward the rear, and a part of the pressing portion is provided above the support pin,
The part of the pressing part is provided at a position inclined with respect to the support pin at an angle substantially coincident with the inclination angle of the bottom surface of the reinforcing part. apparatus. The mounting stay is attached to an outer side portion of the pair of hinges in the rear end portion of the load receiving base,
The said spring member is wound around the said support pin. The load receiving platform raising / lowering apparatus of Claim 1 or 2 characterized by the above-mentioned. 4. The load receiving platform elevating device according to claim 3, wherein a portion of the support pin around which the spring member is wound has a smaller diameter than other portions. A cylindrical body extending in the width direction is provided at the end of the pair of hinges at the load receiving base portion,
The said receiving part is provided in the said cylindrical body. The cargo receiving stand raising / lowering apparatus in any one of Claim 1 to 4 characterized by the above-mentioned.

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