JP2004025910A - Locking device for storage type cargo receiving platform elevating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking device for a storage type cargo receiving platform elevating device capable of performing smooth locking and releasing by lock pins on both sides of a cargo box. <P>SOLUTION: In the storage type cargo receiving platform elevating device to elevate a cargo receiving platform 5 by sliders in supporting columns on both sides of the rear end of the cargo box, a lashing device 10 to lash the cargo receiving platform in a storage positioned a work position is premised. The lashing device comprises lock pins 101 on both sides retractably protruding from and in the ends on both sides of the cargo receiving platform; an energizing means 102 to energize each hole part on the car body side in the storage position and the work position of the cargo receiving platform; a forward and backward movement mechanism 103 moving forward and backward in a longitudinal direction in parallel to the central line of a car body on the under surface side of the cargo receiving platform; wires 104 and 104 on both sides having ends on one side individually coupled to two positions on both sides of the front end of the forward and backward movement mechanism and ends on the other side coupled to the base end of each lock pin; a wiring means 105b for disposing each wire in the independent passage, respectively; and a handle 106L rockably supported at the rear end of the cargo receiving platform and coupled to the rear end of the forward and backward movement mechanism. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a securing device that secures a receiving tray to a storage position and a working position in a retractable receiving tray elevating device configured to raise and lower the receiving tray at the rear end of a packing box. The present invention relates to a measure for facilitating lashing and lashing on the left and right of a receiving table.
[0002]
[Prior art]
Conventionally, a retractable loading / unloading device has been provided with a loading cantilever supported slidably in the front-rear direction of the vehicle so that it can be stored below the rear of the cargo box. From the position, pull it out to the rear of the packing box, convert it to a working position, and follow the uprights on the left and right sides of the rear end of the packing box between the ascending position, which is almost flush with the floor of the packing box, and the ground. By moving up and down, loading and unloading of luggage is performed. The left and right ends of the load receiving table are guided by left and right rails below a rear portion of the packing box, and slide in the vehicle longitudinal direction between the working position and the storage position.
[0003]
Some of the retractable loading tray lifting devices include a securing device that secures the loading tray to the storage position and the working position. In general, the securing device includes a lock pin supported so that the front ends thereof can be protruded and retracted outward in the vehicle width direction from both left and right ends of the load receiving table. Urging means for urging the lock pins so as to protrude toward each other, and for engaging the tips of the lock pins with the holes on the vehicle body side when the load receiving table is changed to the storage position and the working position; A handle supported at the rear end so as to be swingable in the longitudinal direction of the vehicle body, and right and left wires each having one end connected to the handle and the other end individually connected to the base end of the left and right lock pins. And In this case, the handle is swung to the securing operation position by the left and right wires stretched by the biasing force of the biasing means between the handle and the base ends of the left and right lock pins, and the handle is moved to the locking means by the biasing means. When swinging to the securing release operation position at the rear of the vehicle body against the biasing force, the left and right lock pins are synchronized with each other via the wire with the swing of this handle, and thereby the vehicle body side The engagement of the tips of the left and right lock pins with the holes is released (locking is released), and the load receiving table can be slid in the vehicle longitudinal direction.
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional device, one end of each wire that individually connects the other end to the left and right lock pins is connected to the handle at the same time. Wires may be entangled near the handle. Therefore, when the handle is swung, there is a difference between the operation amounts of the left and right wires, and a difference also occurs in the force for projecting and retracting the left and right lock pins, resulting in a difference in the amount of movement of the left and right lock pins. Become. In this case, the securing and release of the securing by the lock pins on the left and right of the loading tray cannot be performed smoothly.
[0005]
The present invention has been made in view of the above, and an object of the present invention is to provide a retractable loading / unloading device that can smoothly perform locking and unlocking by lock pins on the left and right of the loading container. An object of the present invention is to provide a securing device.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a solution taken by the present invention is that a slider is provided slidably in a vertical direction in a support provided on both sides of a rear end of a packing box, and is provided at a lower end of the slider. The cantilever is slidably supported in the front-rear direction of the vehicle so as to be retractable below the cargo box, and the cargo can be retracted from the storage position below the cargo box to the rear of the vehicle at a working position. In a retractable cradle elevating device configured to raise and lower the cradle along a column between the rear end of the floor of the cargo box and the ground, the cradle is secured to a storage position and a working position, respectively. It is assumed that a lashing device is used. A lock pin supported so that the tip can be freely moved outward and outward in the vehicle width direction from both left and right ends of the load receiving table, and the left and right lock pins are respectively projected outward in the vehicle width direction. Biasing means for urging the tip of each lock pin into the hole on the vehicle body side when the loading tray is converted to the storage position and the working position, and provided on the lower surface side of the loading tray, An advancing / retracting mechanism that moves back and forth in the front-rear direction in parallel with the vehicle body center line, one end of each of which is individually connected to both front and left and right positions of a front end of the advancing / retracting movement mechanism, and And a routing means for routing the left and right wires in independent paths, and a handle connected to the rear end of the forward / backward movement mechanism and swingable in the vehicle longitudinal direction. is there.
[0007]
According to this specific matter, when the loading tray is slid between the storage position and the working position, the handle is swung to the securing release operation position behind the vehicle body against the biasing force of the biasing means. The forward / backward movement mechanism moves back and forth with the swing of the handle, and the left and right wires each having one end individually connected to the front end left / right position of the forward / backward movement mechanism are dragged by independent paths, respectively. The lock pins are immersed in synchronization. As a result, the engagement of the left and right lock pin tips with the holes on the vehicle body side is released (locking release), and the slide of the load receiving table in the vehicle longitudinal direction becomes possible. Then, when the loading tray is slid to the storage position or the work position, the tips of the left and right lock pins are respectively engaged with the holes on the vehicle body side by the urging force of the urging means. At this time, the right and left wires are pulled back along independent paths by the urging force of the urging means, and the forward / backward moving mechanism moves forward in the vehicle body, whereby the handle also swings to the securing operation position in front of the vehicle body. Is done.
[0008]
In this manner, each end of the wire that individually connects the other end to the left and right lock pin is individually connected to the front end left and right position of the forward / backward movement mechanism, and the left and right wires are respectively routed by the routing means. Since the wires are routed on independent routes, the left and right wires are reliably prevented from becoming entangled with each other in the vicinity of the handle due to repeated steering of the handle over time. There is no difference in the operation amount. As a result, there is no difference in force between the left and right lock pins, and the amount of movement of the left and right lock pins is the same. It is possible to do.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0010]
FIG. 1 shows a retractable loading / unloading device with a securing device according to an embodiment of the present invention.
[0011]
The retractable loading tray elevating device 1 includes a pair of right and left columns 3 erected at the rear end of a cargo box 2 of a vehicle, and sliders 4 (see FIG. 2) respectively inserted into the columns 3 so as to be able to move up and down. A load receiving table 5 is supported at the lower ends of the left and right sliders 4, and an elevating cylinder 7 is connected to each slider 4 via a wire 6.
[0012]
The column 3 is formed of a hollow elongated body having a rectangular cross section, and a slider 4 is disposed inside the hollow column. The slider 4 has a plurality of elevating rollers (not shown) at the upper end and the middle thereof, and the elevating rollers smoothly move up and down. One ends of the wires 6 are fixed to upper ends of the left and right sliders 4 respectively. The wire 6 is guided upward from the slider 4, is folded downward by a sheave 33 provided on the upper portion of the column 3, and is guided downward on the front side, and is then sheave from the lower portion of the column 3 (not shown). And the other end thereof is appropriately fixed.
[0013]
The elevating cylinder 7 is arranged at a front part in a cross member 8 arranged between the columns 3, and the wire 6 arranged as described above is fed to the column 3 by the expansion and contraction operation of the elevating cylinder 7. Alternatively, the slider 4 is moved up and down by being pulled from the column 3. Therefore, as described above, by moving the slider 4 up and down by the lifting cylinder 7, the loading table 5 connected to the slider 4 can be moved up and down between the ground and the floor of the packing box 2. It has become.
[0014]
On the other hand, a tail lamp 91 is disposed on the rear surface of the cross member 8. Specifically, the cross member 8 is divided into a front-rear storage portion 81 for storing the elevating cylinder 7 and a rear-side storage portion 82 for storing the tail lamp 91 by a partition wall (not shown). I have.
[0015]
The rear accommodation portion 82 is formed by cutting out the rear surface of the existing cross member 8 and partitioning the front portion where the lifting cylinder 7 is accommodated with a partition wall, and tail lamps 91 (on both sides in the rear accommodation portion 82). (Only the right side is shown in the figure). In other words, the rear space in the cross member 8, which is conventionally a space but not used, is effectively used. As a result, the height of the tail lamp 91 can be ensured to be higher by the amount of the tail lamp 91 which is conventionally provided in the lower portion of the cross member 8 and is accommodated in the cross member 8. Note that the partition wall is not necessarily required, and a structure in which a reinforcing member or the like is provided in the cross member 8 as necessary and the partition wall is eliminated may be used.
[0016]
The receiving table 5 includes a front base receiving member 51 on the front side, which is a base side, which is divided into two parts, and a rear distal receiving member 52 on the front side. The load receiving member 52 is rotatably connected to the load receiving member 52 via a hinge 53, and is configured such that the distal load receiving member 52 is folded and overlapped on the upper surface of the proximal load receiving member 51 and stored.
[0017]
The base end receiving member 51 includes a receiving main body portion 54 on which the luggage is placed on the upper surface thereof together with the distal end receiving member 52, and support portions 55 provided on both left and right sides of the receiving main body portion 54 and supported by the slider 4. And the two 54 and 55 are integrally connected.
[0018]
The support portion 55 includes a guide groove (not shown) extending in the front-rear direction on the outer surface. Further, a bracket 41 is arranged to protrude from the lower end of each of the sliders 4 behind the column 3, and a first guide roller (not shown) provided at the lower end of the bracket 41 rolls into the guide groove. It is arranged freely. The bracket 41 is arranged to protrude rearward from the column 3 through a cutout groove 32 formed in a vertical direction in the rear surface 31 of the column 3.
[0019]
The contact roller (not shown) provided at the lower end of the slider 4 slides the load receiving table 5 rearward from a storage position, which will be described later, and supports the load receiving table 5 when the load receiving table 5 is disposed at the working position where it is projected rearward. The base end of the portion 55 is supported, so that the receiving table 5 is held in a horizontal state in combination with the support from below by the first guide roller.
[0020]
A second guide roller 56 is provided at a base end (front end) of the support portion 55. The second guide roller 56 is substantially horizontally moved from the base end of the support portion 55 so as to roll in the front-rear direction along a pair of left and right slide rails (not shown) provided below the rear portion of the packing box 2. The load receiving table 5 can be smoothly slid along the slide rails through the second guide rollers 56. The loading table 5 configured as above is slid to the front end of the slide rail in a folded state and is stored below the rear of the packing box 2, and the folded tip is slid to the rear of the slide rail. The side receiving member 52 can be arranged in a working state in which the side receiving member 52 is horizontally extended on the extension of the proximal end receiving member 51 and is moved up and down between the ground and the floor surface of the packing box 2.
[0021]
Further, a cover material C is continuously provided on the rear surface 31 of the column 3. The cover material C is for covering the bracket 41 disposed rearwardly and protruding from the rear surface 31 of the column 3, and has the same lateral width as the left and right lateral widths of the column 3 and a front-rear width substantially equal to the protruding length of the bracket 41. Is formed in a hollow elongated body having a rectangular cross section having
That is, the cover material C is arranged on the rear extension of each of the columns 3 in a manner integrated with the columns 3. On the rear surface of the cover member C, a notch groove C1 is formed to allow the bracket 41 to move up and down as the slider 4 moves up and down. By covering the inside of the bracket 41 protruding from the column 3 with the cover material C, the bracket 41 is protected from damage and the like, and the appearance of the entire apparatus is made clear and clear. .
[0022]
As a characteristic part of the present invention, as shown in FIGS. 2 and 3, the retractable loading tray lifting device 1 includes a securing device 10 for securing the loading tray 5 to the storage position and the working position, respectively. ing. The lashing device 10 is configured such that the distal ends (outer ends) of both the left and right ends of the base end position (front end position) of the base end receiving member 51 of the load receiving base 5 can freely move outward in the vehicle width direction. The supported lock pins 101, 101, urging means 102, 102 for urging the left and right lock pins 101, 101 to protrude outward in the vehicle width direction, respectively, and the base end receiving member 51. A forward / backward moving mechanism 103 that moves forward and backward in the front-rear direction parallel to the vehicle body center line, one end of each of which is individually connected to the front end and left and right positions of the forward / backward moving mechanism 103, and the other end is the left and right lock. Left and right wires 104, 104 connected to the base ends (inner ends) of the pins 101, 101, a routing means 105 for routing the left and right wires 104, 104 by independent routes, respectively, Member 5 The rear right and left positioned swingably supported to the vehicle body longitudinal direction, the connected to the rear end of the forward and backward movement mechanism 103 the left and right handle 106L, and a 106R.
[0023]
The left and right lock pins 101, 101 are formed in a substantially spindle shape at their tips, and have holes (not shown) that open to the front of the slide rails on the vehicle body side when the loading tray 5 is converted to the storage position. When the load receiving table 5 is changed to the working position, it is inserted into and engaged with a hole (not shown) opened at the lower part of the support member 41 of the slider 4 which is on the vehicle body side. It is supposed to. In this case, the periphery of the hole at the front of the slide rail and the periphery of the hole at the lower part of the support member 41 of the slider 4 are formed in a tapered shape so that the lock pin 101 can be easily inserted into the hole.
[0024]
As shown in FIG. 4, the right and left urging means 102 (only the right one is described because it has the same configuration) includes a substantially cylindrical casing 102a and inner and outer positions of the inner peripheral surface of the casing 102a. Outer and inner sliding cylinder members 102b and 102c which support the base side of the lock pin 101 on the inner peripheral surface so as to be slidable in the vehicle width direction; A flange 102d fixedly provided at a substantially intermediate position of the lock pin 101 positioned between the sliding cylinder member 102b and the outer sliding cylinder member 102c, and between and outside of the inner sliding cylinder member 102b and the flange 102d. There are biasing springs 102e, 102e compressed on the outer peripheral surface of the lock pin 101 between the sliding cylinder member 102c and the flange portion 102d.
[0025]
As shown in FIGS. 2 and 3, one end (right side in FIG. 2) of the advance / retreat mechanism 103 is rotatably supported by a shaft 103a projecting downward from the lower surface of the base end receiving member 51. A substantially rectangular plate 103b and a front end is rotatably supported at a rear end (upper end in FIG. 2) of the other end side (left side in FIG. 2) of the plate 103b, and a rear end thereof is the left handle. A rod-shaped link member 103c rotatably supported at one end (the right end in FIG. 2) of the plate 106L and extending in the front-rear direction of the vehicle body, and a rear end is turned around a front end (the lower end in FIG. 2) on the other end side of the plate 103b. And a substantially inverted T-shaped yoke member 103d movably supported. The yoke member 103d is swingably supported with respect to the front end on the other end side of the plate 103b, and is configured such that the swing center battle is always parallel to the vehicle body center line.
[0026]
One end of each of the left and right wires 104 is individually connected to each of the left and right front ends of the yoke member 103d. Each wire 104, one end of which is connected to the yoke member 103d, extends forward in parallel with the center line of the vehicle body, and is then bent at substantially right angles toward the base ends of the left and right lock pins 101, 101 and routed. ing.
[0027]
The wiring means 105 is provided at a front end position on the lower surface of the base end receiving member 51 corresponding to the front of the yoke member 103d, and connects the left and right wires 104, 104 extending forward in parallel with the vehicle body center line to the left and right lock pins 101. Pulleys 105a, 105a bent substantially at right angles toward the base end of the vehicle, and right and left wires 104, 104 extending forward between the respective pulleys 105a and the front left and right positions of the yoke member 103d in parallel with the vehicle body center line. Of the left and right wires 104, 104 extending in the vehicle width direction between the respective pulleys 105a and the base ends of the respective lock pins 101, the one side grommets 105b,. The other grommet 105c, which slidably passes the other side portion at a predetermined position. In this case, the left and right wires 104, 104 are routed at predetermined intervals without being in contact with each other by the routing means 105, so that the left and right wires 104, 104 are reliably prevented from being entangled with each other. It has become.
[0028]
Of the left and right handles 106L and 106R, the left handle 106L has the other end (the left end in FIG. 2) rotatably supported at the right rear end position of the base-side load receiving member 51 and is swingable in the front-rear direction. Is to be operated. The left handle 106L is always operated to the securing operation position (the position indicated by the solid line in FIG. 2) by the urging force of the urging spring 102e via the left and right wires 104, 104 and the advance / retreat moving mechanism 103. On the other hand, the right handle 106R has one end and the other end fixed to the rear end left position of the base end receiving member 51 so as not to swing, and is gripped when the load receiving table 5 is pulled out from the storage position to the working position. It functions as a unit.
[0029]
Here, an operation procedure in the case where the loading tray 5 is slid between the storage position and the work position will be described.
[0030]
First, when the loading tray 5 is slid from the retracted position to the working position, the left handle 106L is operated against the urging force of the urging spring 102e to release the lashing operation at the rear of the vehicle body (the two-dot chain line in FIG. 2). When the handle 106L is swung, the advancing / retreating mechanism 103 moves back and forth so as to swing the yoke member 103d from the solid line position in FIG. 2 to the two-dot chain line position. The left and right wires 104, 104 each having one end individually connected to the front end left and right positions of the yoke member 103d of the advance / retreat movement mechanism 103 are dragged by independent paths, and the left and right lock pins 101, 101 are moved. The lock pins 101 and 101 are disengaged from the holes at the front portions of the left and right slide rails by being immersed in the synchronized state. . As a result, the left and right handles 106L, R are gripped and the load receiving table 5 is slid to the rear of the vehicle body. When the operation of the left handle 106L is released when approaching the working position, the lock pins 101, 101 are biased by the urging springs. Projecting with the urging force, the slider 4 is inserted into and engaged with the hole at the lower part of the support member 41 of the slider 4 to secure the load receiving table 5 at the working position.
[0031]
Also, when the load receiving table 5 is slid from the working position to the storage position, the left handle 106L is operated to swing to the locking release operation position at the rear of the vehicle body against the urging force of the urging spring 102e. Then, the advancing / retreating mechanism 103 moves back and forth to the rear of the vehicle body, and the left and right wires 104, 104 are dragged by independent paths, respectively, so that the left and right lock pins 101, 101 are immersed in a synchronized state. Then, the engagement of the lock pins 101 with the holes at the lower portion of the support member 41 of the left and right sliders 4 is released. As a result, the left and right handles 106L, R are gripped and the loading tray 5 is slid to the front of the vehicle body, and when the operation of the left handle 106L is released when approaching the storage position, the lock pins 101, 101 are biased by the urging springs. Projecting by the urging force of the right and left slide rails, and is inserted into and engaged with the holes at the front portions of the left and right slide rails, and the load receiving table 5 is secured at the storage position.
[0032]
As described above, the respective ends of the wires 104, 104 respectively connecting the other ends to the left and right lock pins 101, 101 are individually connected to the left and right positions of the front end of the yoke member 103d of the advance / retreat moving mechanism 103. , One side of the left and right wires 104, 104 are routed by independent grommets 105b,... Of the routing means 105, respectively. Thus, the left and right wires 104, 104 are reliably prevented from being entangled with each other, and there is no difference in the operation amounts of the left and right wires 104, 104 when the handle 106L is swung. For this reason, there is no difference in the force with which the left and right lock pins 101, 101 appear and disappear, and the amount of movement of the left and right lock pins 101, 101 becomes the same. Can be smoothly performed.
[0033]
Note that the present invention is not limited to the above-described embodiment, but includes various other modifications. For example, in the above-described embodiment, a description has been given of a configuration in which the loading tray 5 is manually slid between the storage state and the working state. However, a slide cylinder is connected to the loading tray and the vehicle body side in the front-rear direction. The receiving table may be slid by the expansion and contraction operation of the slide cylinder. In addition, not only the slide cylinder but also an appropriate actuator such as a motor may be used to slide the load receiving table.
[0034]
Further, in the above-described embodiment, the description has been given of the configuration in which the receiving table 5 is folded in two. However, the receiving table may be formed of a single non-foldable sheet, and the present invention is not limited to the folding in two. Instead, it may be configured to be folded in three or more.
[0035]
【The invention's effect】
As described above, according to the securing device of the retractable loading / unloading device of the present invention, one end of each of the wires respectively connecting the other ends to the left and right lock pins is connected to the front end of the forward / backward moving mechanism. In addition to being individually connected to the position, the left and right wires are routed in independent routes by the routing means, thereby reliably preventing the left and right wires from being entangled near the handle due to repeated handle operation. Eliminate the difference in the amount of operation of the left and right wires when the handle is swung, correct the difference in the force of the left and right lock pins, and make the amount of movement of the left and right lock pins the same, and Can be smoothly tied and released by the lock pin.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a retractable loading / unloading device including a securing device according to an embodiment of the present invention.
FIG. 2 is a plan view of the securing device as viewed from above.
FIG. 3 is a sectional view taken along line AA of FIG. 2;
FIG. 4 is an enlarged view showing a configuration of a left lock pin and a biasing unit.
[Explanation of symbols]
DESCRIPTION OF REFERENCE NUMERALS 1 retractable loading tray lifting device 2 packing box 3 support 4 slider 5 loading tray 10 securing device 101 lock pin 102 urging means 103 advance / retreat moving means 104 wire 105 wiring means 106L handle

Claims (1)

A slider is slidably provided in the uprights provided on both sides of the rear end of the packing box so as to be slidable in the vertical direction. The cantilever is slidably supported in the direction, and the worktable is pulled out from the storage position below the packing box toward the rear of the vehicle body, and the support is supported between the floor rear end of the packing box and the ground. A retractable loading / unloading device that is adapted to be lifted and lowered along with a securing device that secures the loading container to a storage position and a work position, respectively.
A lock pin supported so that the tip can freely move outward in the vehicle width direction from both left and right ends of the loading tray;
The left and right lock pins are urged so as to protrude outward in the vehicle width direction, and the leading ends of the lock pins are inserted into the holes on the vehicle body side when the loading tray is changed to the storage position and the working position. Biasing means for engaging
An advancing and retreating mechanism that is provided on the lower surface side of the loading tray and that reciprocates in the front-rear direction in parallel with the vehicle body center line;
Left and right wires whose one ends are individually connected to both front left and right positions of the advance / retreat moving mechanism and whose other ends are connected to the base ends of the left and right lock pins,
Routing means for routing the left and right wires by independent routes,
And a handle connected to a rear end of the forward / backward movement mechanism and capable of swinging in the front-rear direction of the vehicle body.

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