JP2016101838A - Cargo receiving base and cargo receiving base lifting device - Google Patents

Abstract

PURPOSE: To provide a cargo receiving base and a cargo receiving base lifting device having its cargo receiving base, capable of easily installing a lock handle for preventing rocking of the cargo receiving base of a folded-up state.CONSTITUTION: A cargo receiving base comprises a first cargo receiving part, a second cargo receiving part linked to the first cargo receiving part via a hinge part with the width direction as the rotary shaft direction and a lock part for regulating one rotation of the first cargo receiving part or the second cargo receiving part, and the hinge part comprises a first hinge bracket provided in a side part of the first cargo receiving part and a second hinge bracket provided in a side part of the second cargo receiving part, and the lock part comprises a handle part for regulating the one rotation in a folded-up state of being rotated so that one of the first cargo receiving part or the second cargo receiving part approaches the other, and the handle part is rotatably provided on the first hinge bracket or the second hinge bracket with the width direction as the rotary shaft direction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a foldable load receiving table and a load receiving table lifting device including the load receiving table.

  The load receiving platform lifting device is mainly mounted on the rear part of the vehicle, and is used for loading and unloading loads between the ground and the vehicle loading platform. In the apparatus, for example, there is a device that can change the posture of the load receiving table from a horizontal posture to a standing posture and can travel the vehicle while maintaining the standing posture.

  As shown in FIG. 5 (a), the load receiving platform in the standing posture is provided with a second load receiving portion 93 on the distal end side that can be rotated via a hinge portion 92 on the first load receiving portion 91 on the proximal end side. There is something to become. The load receiving platform is in a folded state indicated by a solid line when the second load receiving portion 93 is rotated along the arrow A91 shown in FIG. At this time, one end portion of the substantially J-shaped lock handle 94 provided in the first load receiving portion 91 is inserted into the lock hole 95 provided in the side surface of the second load receiving portion 93, so that the vehicle is running. The second load receiving portion 93 is prevented from swinging (Patent Document 1 or the like).

  When the load receiving stand is in the folded state, the height when the stand is raised can be suppressed, and the rear field of view during traveling of the vehicle can be enlarged. It also helps to comply with the legal height of vehicles. In particular, there is a remarkable effect when the length of the load receiving platform is increased in order to increase the lifting efficiency with respect to loading and unloading of the load.

JP-A-7-251670

  As for the mounting position of the lock handle 94, high accuracy is required.

  When the inner diameter of the lock hole 95 is larger than the outer diameter of the lock handle 94, the lock handle 94 inserted into the lock hole 95 is not preferable because it easily vibrates during traveling of the vehicle. Further, if the lock hole 95 is unnecessarily enlarged, the strength of the load receiving table will be reduced. Therefore, the lock hole 95 has substantially the same size as the outer diameter of the lock handle 94, and when the second load receiving portion 93 is rotated to the state of the solid line portion in FIG. 95 needs to be accurately positioned on the rotation locus (arrow A92) of the lock handle 94.

  Even in the first load receiving portion 91 provided with the lock handle 94, a load is applied to the attachment site of the lock handle 94 when operating the lock handle 94 or holding the folded state. Therefore, the attachment position of the lock handle 94 cannot be changed carelessly after the second load receiving portion 93 is assembled to the first load receiving portion 91.

  Therefore, although the assembly of the second load receiving portion 92 to the first load receiving portion 91 is performed via the hinge portion 92, it is necessary to prevent the assembling error and perform it with high accuracy. Further, the first load receiving portion 91 or the second load receiving portion 93 is provided with a cushioning material 96 for shock reduction when the folded state is set, and the folded state in consideration of the position and size of the cushioning material 96 On the other hand, the lock handle 94 must function properly. Accordingly, there is a strong demand for a lock handle 94 that can be easily installed with reduced complexity.

  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 / lowering device to which a lock handle for preventing swinging of a folded load receiving table can be easily attached.

  In the present invention, the following means are used to solve the above problems.

  A first load receiving portion; a second load receiving portion connected to the first load receiving portion via a hinge portion whose width direction is the rotational axis direction; and one of the first load receiving portion and the second load receiving portion. A lock portion for restricting rotation, wherein the hinge portion includes a first hinge bracket provided on a side portion of the first load receiving portion and a second hinge provided on a side portion of the second load receiving portion. A handle portion that regulates rotation of the first load receiving portion or the second load receiving portion in a folded state that is rotated so that one of the first load receiving portion and the second load receiving portion approaches the other. The handle portion is configured to be provided on the first hinge bracket or the second hinge bracket so as to be rotatable about the width direction as a rotation axis direction.

In the load receiving table, the first load receiving unit, and the second load receiving unit according to the present invention, the “side surface” refers to a surface facing the side of the vehicle, and when the load receiving table is in a horizontal posture, The surface on which the load is placed means “front surface”, and the surface that becomes the lower surface and touches the ground means “back surface”.
The handle portion may be fastened to the first bracket or the second bracket.
Further, the second load receiving portion may be provided so as to be rotatable with respect to the first load receiving portion, and the handle portion may be provided on the first bracket.
The load receiving stand according to claim 1 or 2, characterized by the above.
Furthermore, the load receiving table lifting device provided with the above-described load receiving table can also be targeted.

  Specifically, a link arm that is pivotally supported at one end with respect to the vehicle side and capable of rotating up and down, or a pair of support columns erected on the vehicle side and a slider that can be moved up and down along the support columns, The stage is supported by the link arm or the slider.

  As in the present invention, since the handle portion is provided on one of the first hinge bracket or the second hinge bracket, the first hinge bracket and the second hinge bracket can be used regardless of the assembly accuracy of the first load receiver and the second load receiver. Only with the unit body to which the two hinge brackets are assembled, the handle portion can be made to function satisfactorily. That is, it is possible to simply provide a lock portion that can be reliably locked, which contributes to an improvement in manufacturing man-hours.

It is a side view of the load receiving table raising / lowering apparatus which concerns on embodiment of this invention. (A) is the perspective view which looked at the hinge bracket which concerns on embodiment of this invention from the outside, (b) is the perspective view which looked at the hinge bracket from the inside, (c) is the side view which looked at the hinge bracket from the inside FIG. (A) is a principal part perspective view of the load receiving stand of the folded state latched by the lock part which concerns on embodiment of this invention, (b) is an exploded view of a lock part with respect to the load receiving stand of the same folded state. (A) is a principal part top view which shows the lock part which concerns on embodiment of this invention, (b) is a side view which shows a lock part. It is the top view of the receiving stand which concerns on the conventional embodiment, and the side view of the receiving stand of a folded state.

  An example of an embodiment of a load receiving table lifting apparatus according to the present invention will be described with reference to the drawings.

  FIG. 1 is a side view of the load receiving table lifting apparatus 100 according to the present embodiment. The load receiving platform lifting / lowering device 100 is mounted on the rear side of the vehicle, and a pair of left and right rotating arms 1 supported so as to be rotatable up and down with respect to the vehicle, and fixed to the tip of the rotating arm 1 are three pieces. A column 2 is formed by welding a plate, and a cradle 3 is supported and foldable with respect to the column 2 so as to be rotatable up and down. The rotating arm 1 is connected to a connecting portion 4 that is installed on a pair of left and right vehicle body frames CF that support a loading platform B of the vehicle. The loading platform 3 has a vehicle width direction as the width direction, and is moved up and down between the ground and the loading platform height by the rotating arm 1. Note that the illustrated load receiving platform lifting device 100 is shown with a solid load receiving stand 3 in a solid line, a horizontal load receiving stand 3 deployed from the standing state with a one-dot chain line, and from a horizontal posture to a loading / unloading posture. The load receiving platform 3 located in the middle of the descent is indicated by a two-dot chain line.

  Although the connecting portion 4 is a known configuration and is not shown in detail, a frame bracket fixed to the lower part of the pair of left and right vehicle body frames CF with the longitudinal direction of the vehicle as a longitudinal direction, and a vehicle width spanned by the left and right frame brackets. The connecting pipe 41 has a longitudinal direction as a direction and mounting members 41 fixed to both ends of the connecting pipe.

  The rotating arm 1 is supported by the left and right attachment members 41. Each of the rotating arms 1 includes two arms (a lift arm 11 and a compression arm 12). The upper lift arm 11 is pivotally supported by the pivot 11a on the proximal end side, and the lower compression arm 12 is pivotally supported by the pivot 12a on the proximal end side. The distal ends of the arms 11 and 12 are pivotally supported by the pivots 11b and 12b with respect to the column 2, respectively. The lift arm 11 and the compression arm 12 constitute a parallel link mechanism with the mounting member 41 and the column 2. The mounting member 41 is provided with a hydraulic cylinder 5. The parallel link mechanism is rotated up and down by using the expansion and contraction of the hydraulic cylinder 5, and the load receiving platform 3 is moved up and down while maintaining the horizontal state shown in the drawing. Is called.

  When the load receiving platform 3 is rotated between the horizontal posture and the standing posture to change the posture, the side close to the rotation center is the base end side, and the rotation tip side is the tip side. The load receiving platform 3 includes two load receiving portions 31 and 32 connected to each other via a hinge portion 33, and the base end portion side is a first load receiving portion 31 and the distal end portion side is a second load receiving portion 32. The second load receiving portion 32 is provided so as to be in a folded state in which the second load receiving portion 32 rotates and approaches the first load receiving portion 31 around the hinge portion 33 or in a deployed state in which the second load receiving portion 32 rotates and leaves. In the folded state, the second load receiving portion 32 is held in a relative position with respect to the first load receiving portion 31 by a lock portion (hereinafter simply referred to as “folding lock portion”) 34 provided on the hinge portion 33. It is fixed with.

The second load receiving portion 32 is provided with a mounting portion 35a of a known lock portion (hereinafter simply referred to as “standing lock portion”) 35 for holding the standing posture of the load receiving platform 3 on the side surface thereof ( For example, the patent 42199936 gazette). On the side gate B1 of the loading platform B, a lock bracket B35 having a substantially U-shaped groove is provided. When the load receiving stand 3 is in the standing posture, the lock portion 35 is locked in the substantially U-shaped groove, so that the standing posture of the load receiving stand 3 can be maintained. In addition, a refraction-type link portion 36 formed by connecting two long plates is provided between the column 2 and the second cargo receiving portion. The link portion 36 supports the load receiving platform 3 in a horizontal posture, which is refracted into a V shape when the posture is changed to the standing posture, and between the column 2 and the load receiving table 3 when the standing posture is reached. It is stored in. In addition, in the load receiving platform 3, the first load receiving portion 31, and the second load receiving portion 32 according to the present embodiment, the “side surface” refers to a surface facing the vehicle side, and the load receiving platform 3 is in a horizontal posture. In this case, the surface on which the load is placed is the “top surface”, and the surface that is the bottom surface and in contact with the ground is the “back surface”.
When using such a load receiving table elevating device 100, the posture change and lifting operation of the load receiving table 3 are performed as follows.

  After the vehicle stops, fixing by the standing lock unit 35 is released, and the posture of the load receiving platform 3 is manually changed from the standing posture to the horizontal posture. Thereafter, the second load receiving portion 32 is released from being fixed by the folding lock portion 34, and deployed so that the second load receiving portion 32 is substantially flush with the first load receiving portion 31 (arrow A1). And the raising / lowering operation | movement of the receiving stand 3 is performed with the unfolding state (arrow A2). In order to finish the operation by the load receiving platform lifting apparatus 100 and make the vehicle travelable, the second load receiving portion 32 is manually folded (arrow A1), and the second lock receiving portion 34 is used as the second load receiving portion. 32 is fixed. Thereafter, the horizontal position of the load receiving platform 3 is changed to the standing posture and fixed by the standing lock portion 35.

  Next, the structure of the hinge part 33 and the folding lock | rock part 34 is demonstrated using the perspective view and side view of FIG. In addition, this figure has shown the hinge part 33 vicinity of the load receiving stand 3 used as the vehicle left side.

  As shown in FIG. 2A, the hinge part 33 includes a first hinge bracket 331 provided in the first load receiving part 31, a second hinge bracket 332 provided in the second load receiving part 32, both brackets 331, And a hinge shaft portion 333 that is inserted through 332 and rotatably supports the second hinge bracket 332 with respect to the first hinge bracket 331. As illustrated, the second hinge bracket 332 is provided on the inner side in the width direction of the load receiving platform 3 in a state adjacent to the first hinge bracket 331.

  The folding lock portion 34 includes a substantially J-shaped handle portion 341 partially protruding outward from the load receiving platform 3, and a lock bracket 342 provided on the outer surface of the first hinge bracket 331 through which the handle portion 341 is inserted. And four bolts 343 for screwing the lock bracket 342 to the first hinge bracket 331. The handle portion 341 includes a rod portion 341a inserted through the first hinge bracket 331. The rod portion 341a protrudes along the width direction of the load receiving platform 3, and the handle portion 341 can be rotated about the rod portion 341a as a rotation axis.

A lock hole 37 having an inner diameter that is slightly larger than the outer diameter of the handle portion 341 is provided on the outer surface of the second hinge bracket 332. When the second load receiving portion 32 is rotated about the hinge shaft portion 333 and the load receiving platform 3 is in the folded state, the operator rotates the handle portion 341 so that the one end portion 341b becomes the lock hole 37. Can be inserted.
When the load receiving tray 3 is in the folded state, the hinge portion 33 and the folding support portion 38 provided in the vicinity thereof shown in FIG.

  The folding support portion 38 includes a pedestal portion 381 having a U-shaped cross-section welded to the deck surface (the surface on which the load is placed) of the first load receiving portion 31, and a cushion rubber 382 fastened on the pedestal portion 381. And a locking portion 383 that is locked to the cushion rubber 38 in a block shape welded to the deck surface of the second cargo receiving portion 32 and the second hinge bracket 332.

  The locking portion 383 is locked to the cushion rubber 382 as shown in FIG. 2C when the cargo receiving platform 3 is folded. At this time, the locking portion 383 has a flat surface portion 383a having a predetermined length L383 in contact with the upper surface portion 382a of the cushion rubber 382. The upper surface portion 382a is also a flat surface, and has a larger area than the flat surface portion 383a of the locking portion 383. When the flat surfaces of the locking portion 383 and the cushion rubber 382 are in contact with each other, the opposing surfaces (deck surfaces) of the first load receiving portion 31 and the second load receiving portion 32 are in a parallel state when the load receiving platform 3 is in the folded state. It becomes. The size, shape, and the like of the flat surface portion 383a and the upper surface portion 382a can be appropriately changed as long as the facing surfaces (deck surfaces) are in a parallel state. In the present embodiment, the deck surface of the second cargo receiving portion 32 is substantially flush with the deck surface of the first cargo receiving portion 31 as shown in the figure, but the deck surface of the second cargo receiving portion 32 is inclined. In such a case, the locking portion 383 may be welded and fixed only to the second hinge bracket 332. Of course, it is good also as a structure welded only to either the deck surface or the 2nd hinge bracket 332 irrespective of the shape of the deck surface. The same applies to the installation of the pedestal portion 381.

  The folding lock unit 34 for maintaining the folded state functions in the state shown in FIG. In the drawing, for convenience of explanation, the standing lock portion 35 and the refractive link portion 36 of the load receiving platform 3 are omitted. As shown in FIG. 3A, the folding lock portion 34 is inserted into the lock hole 37 located near the hinge shaft portion 333 and the one end portion 341b of the handle portion 341 is inserted to rotate the handle portion 341. Both rotations of the second cargo receiving portion 32 are restricted. As shown in FIG. 3B, the handle portion 341 is inserted through an insertion hole 331a provided in the first hinge bracket 331, and a portion inserted through the rod portion 341a is not shown in the drawing. Is provided in a wound state. Further, the bolt 343 for fastening the lock bracket 342 is inserted into a bolt hole 331b provided around the insertion hole 331a.

  Here, the state in which the folding lock part 34 is provided will be described in detail with reference to FIG. FIG. 4 (a) is a plan view of a principal part of the unfolded load receiving platform 3 as seen from the back (opposite the deck surface), and FIG. 4 (b) is an essential view of the folded load receiving platform 3. FIG. FIG.

  As shown in FIG. 4A, a spring 341c is wound around the insertion portion of the rod portion 341a. The lock bracket 342 is provided with a cylindrical portion 3311 on its inner main surface (a contact surface that contacts the first hinge bracket 331). The inner peripheral surface of the cylindrical portion 3311 is provided to have the same diameter and the same center as the insertion hole 331a (see FIG. 3B), and the rod portion 341a is supported by these inner peripheral surfaces. The cylindrical portion 3311 may be formed of the same member, not a separate member from the lock bracket 342. Further, the bolt hole 331b is subjected to a spiral cutting process, and can be brought into a joined state by simply screwing the bolt 343 into the first hinge bracket 331. Therefore, only the insertion hole 331a and the bolt hole 331b need be formed in order to attach or detach the folding lock part 34 (see FIG. 3B), and it is also necessary to provide an additional opening or the like for maintenance. Since there is no, the strength drop of the cargo receiving stand 3 can also be prevented.

  The folding lock portion 34 is supported by the first hinge bracket 331 with a part of the rod portion 341a inserted into the first load receiving portion 31 by the above configuration. In order to operate the folding lock part 34, the handle part 341 is pulled out to the outer side (left direction in the figure) of the load receiving platform 3 as shown by a one-dot chain line. At this time, an urging force is generated in the handle portion 341 by the spring 341c to urge the handle 341 inward (rightward in the figure). As shown in FIG. 4B, the handle portion 341 is rotated from the alternate long and short dash line portion to the solid line portion along the arrow A3 against the urging force, and then the lock hole is utilized using the urging force. The handle part 341 is inserted into the member 37.

  As described above, the folding lock portion 34 is supported not by the first load receiving portion 31 but only by the first hinge bracket 331, and the lock hole 37 is provided in the second hinge bracket 332, so that the first hinge bracket By appropriately performing only the assembly of the second hinge bracket 332 to the 331, the handle portion 341 can be brought into a state in which the handle portion 341 can be accurately locked to the lock hole 37. The verification operation can also be performed when the unit body including the first hinge bracket 331, the second hinge bracket 332, and the hinge shaft portion 333 is assembled. In other words, the quality of the folding lock portion 34 is not affected by the assembly accuracy of the first load receiving portion 31 or the second load receiving portion 32 with respect to the hinge portion 33. Further, as can be seen from FIG. 4A, the first hinge bracket 331 and the second hinge bracket 332 are thicker than the members constituting the first load receiving portion 31, and are caused by the operation of the handle portion 341. It has a relatively high strength against the generated load.

  In the present embodiment, the first load receiving portion 31 and the second load receiving portion are held while holding the folded state of the load receiving stand 3, specifically, restricting the rotation of the second load receiving portion 32 with respect to the first load receiving portion 31. Regardless of the assembly accuracy of 32, the handle portion 341 can be reliably and easily inserted into the lock hole 37. Since it can be confirmed that the folding lock portion 34 functions well before the hinge portion 33 is fixed to the first load receiving portion 31 and the second load receiving portion 32, the first load receiving portion 31 and the second load receiving portion 32 are assembled. It also leads to improvement of man-hours. Although the handle portion 341 is configured to be inserted into the lock hole 37, the end portion 341a gripped by the operator is made longer than the illustrated length and is bent to the gripped portion 341 (see FIG. 2 (a)) 341b may be engaged with the back surface portion (the surface facing upward in the drawing) 32a of the second load receiving portion 32 to hold the folded state of the load receiving platform 3. In this case, the lock hole 37 can be omitted, leading to an increase in strength of the second hinge bracket 332.

In addition, since the folding lock portion 34 is attached to the first hinge bracket 331 via the bolt 343, work such as replacing the folding lock portion 34 can be easily performed when the fastening is released. . Therefore, the operation | work of notching the 1st cargo receiving part 31 etc. is unnecessary. In addition, since it is a structure to be fastened, the handle portion 341 or the lock bracket 342 made of a material different from that of the first hinge bracket 331 can be used.
Furthermore, since the folding lock part 34 is provided in the hinge part 33, the 1st cargo receiving part 31 can be shortened.

  Specifically, an area S1 having a distance L1 between the first hinge bracket 331 and the standing lock part 35 shown in FIG. 4B (hereinafter, referred to as an “erection lock part adjacent area”) S1 can be reduced. The folding lock portion 34 satisfies that the interference with the standing lock portion 35 (see FIG. 1) and its attachment member 35a is avoided and that the second load receiving portion 332 can be restricted in rotation. As long as no other member is provided in the standing lock portion adjacent region S1, the region S1 can be reduced. In other words, the length of the first load receiving portion 31 (the length in the left-right direction in the figure) can be shortened, leading to a reduction in the height of the load receiving platform 3 when the load receiving platform 3 is in a standing posture and the vehicle can travel. . As a result, the rear view of the vehicle driver or the like is secured. Further, in the case of the load receiving table lifting device not provided with the standing lock portion 35, the distance L2 from the attachment member 35a of the standing lock portion 35 to the refractive link portion 36 in FIG. The region (hereinafter referred to as “refraction link portion adjacent region”) S2 can also be reduced. Therefore, the length of the first cargo receiving portion 31 is further reduced, and further rear view is ensured. In addition, shortening the first load receiving portion 31 leads to suppressing the vehicle height in a state where the load receiving platform lifting device 100 is mounted.

  As described above, the folding lock portion 34 is configured to be provided on the first hinge bracket 331, but the same effect can be obtained even if the configuration is provided on the second hinge bracket 332. Further, regarding the fixing of the handle portion 341, not only the fastening means described above but also the welding lock means 34 can be easily set to a state in which the folding lock portion 34 functions properly.

  In addition, although the load receiving platform elevating device 100 is configured such that the load receiving platform 3 is moved up and down by using the up and down rotation of the rotating arm 1, the load receiving platform is folded and the posture is changed from the horizontal posture to the standing posture. For example, a known structure (for example, Japanese Patent Laid-Open No. 7-251670) in which a pair of right and left support columns are provided at the rear of the vehicle and the load receiving table is raised and lowered along the support columns may be used.

  In addition, the folding lock portion 34 described above can be applied to any load receiving device lifting device that is set to a posture other than the standing posture when the vehicle is traveling and is in a folded state in order to make the load receiving table 3 compact. is there.

  INDUSTRIAL APPLICABILITY The present invention is useful for all load receiving table lifting devices provided with a load receiving table that is in a vehicle running state in a folded state.

DESCRIPTION OF SYMBOLS 1 Rotating arm 2 Column 3 Load receiving stand 4 Connection part 5 Hydraulic cylinder 31 1st load receiving part 32 2nd load receiving part 33 Hinge part 34 Folding lock part 35 Standing lock part 36 Refractive link part 37 Lock hole 38 Folding support part 100 Loading platform lifting device 331 First hinge bracket 332 Second hinge bracket 333 Hinge shaft portion 341 Handle portion 342 Lock bracket 343 Bolt 341a Rod portion 381 Base portion 382 Cushion rubber 383 Locking portion

Claims (4)

A first receiving part;
A second load receiving portion connected to the first load receiving portion via a hinge portion having a width direction as a rotation axis direction;
A lock portion for restricting one rotation of the first load receiving portion or the second load receiving portion;
With
The hinge portion includes a first hinge bracket provided on a side portion of the first load receiving portion, and a second hinge bracket provided on a side portion of the second load receiving portion,
The lock portion has a handle portion that regulates the rotation of the one of the first load receiving portion or the second load receiving portion in a folded state rotated so as to approach the other,
The said handle part is provided in the said 1st hinge bracket or the said 2nd hinge bracket so that rotation is possible by making the said width direction into the rotation axis direction. The load receiving stand characterized by the above-mentioned. The said handle | steering-wheel part is fastened by the said 1st bracket or the said 2nd bracket. The load receiving stand of Claim 1 characterized by the above-mentioned. The second receiving part is provided so as to be rotatable with respect to the first receiving part,
The said handle part is provided in the said 1st bracket. The load receiving stand of Claim 1 or 2 characterized by the above-mentioned. A load receiving table lifting device comprising the load receiving table according to any one of claims 1 to 3,
A link arm that is pivotally supported at one end with respect to the vehicle side and that can turn up and down, or a pair of columns that are erected on the vehicle side and a slider that can be raised and lowered along the column,
The load receiving table elevating apparatus, wherein the load receiving table is supported by the link arm or the slider.

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