JPH09263172A - Wheel stopper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assure improvement of assembling workability of stopper plate, smoothness of its opening/closing action and reduction of cost while improving mountability/dismountability and serviceability of the torsion bar by constituting a torsion bar which is so shaped as to be mountable after attachment of a stopper plate. SOLUTION: At the rear end of a tail gate 1, a wheel stopper device 5 which retains unrollably a wheel 3 of a bogie 4 is provided. On the wheel stopper device are provided a recess 8 in a gate plate 2, a stopper plate 7 which is rotatably supported in the recess and abuts the wheel of the bogie to prevent it from rolling when standing up, and a resilient member 12 mounted between the recess 8 and the stopper plate 7. On the resilient member 12 are provided two axes 13, an extension 14 on the stopper plate 7 side and an extension 15 on the recess 8 side which extend alternately from either end of each axis in a substantially V shape, and one torsion bar 18 having first parallel axis 16 extending from the tip of the extension on the stopper plate 7 side, and second parallel axis 17 connecting the tip of the extension on the recess 8 side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention rolls a wheel of a moving body having a moving body mounted on a stop plate such as a liftable tailgate lifter mounted on the rear part of a truck. More specifically, the present invention relates to a wheel stopper device that is locked so that it cannot be locked.

[0002]

2. Description of the Related Art Conventionally, such a wheel stopper device is disclosed in, for example, Japanese Utility Model Publication No. 7-26199.
It is provided at one side in the vertical direction orthogonal to the plate width direction of a stop plate such as a tailgate lifter that can be raised and lowered in the vertical direction, and in a state where a moving body such as a truck having wheels is placed on the stop plate and stopped. The rolling of the wheels of this moving body is regulated.

Specifically, the rear end is rotatably supported by a shaft on one side in the vertical direction orthogonal to the plate width direction of the recess extending in the plate width direction of the stop plate, and is vertically rotated. Equipped with a free stopper plate. Further, between the recess and the stopper plate, an elastic member that biases the stopper plate upward to maintain it in an upright posture to bring the wheels of the moving body into contact with the elastic member and regulate the rolling thereof. Is installed. Further, the stop plate is provided with locking means for engaging with the stopper plate which is urged downwardly against the urging force of the elastic member, and the locking means causes the stopper plate to fall over. I try to maintain my posture.

The resilient member has a shaft portion extending in the plate width direction inside the recess, and alternates from both ends of the shaft portion toward the stopper plate side and the recess side so as to generate a twist around the shaft portion. And a torsion bar having an extending portion extending to. The shaft portion of the torsion bar is attached to the back surface side of the stopper plate by fixing a pair of left and right fixing pieces with screws. When the stopper plate is rotated, the extension portion extending from one end of the shaft portion to the stopper plate side in contact with the back surface of the stopper plate is extended from the other end of the shaft portion to the recess side. By pressing the tip against the bottom surface of the recess, the extension on the recess side is bent in the direction relative to the extension on the stopper plate side in a side view to cause twisting around the shaft. , Is applied as a biasing force of the elastic member to the stopper plate.

Assembling of the stopper plate is as follows.
With the torsion bar previously screwed to the back surface of the stopper plate by a pair of left and right fixing pieces, fit the bearing portion on the back surface of the stopper plate from one side in the left and right direction to the outer peripheral surface of the shaft extending in the recess in the left and right direction. Done by.

[0006]

However, in the above-mentioned conventional wheel stopper device, since the stopper plate is assembled with the torsion bar attached, the bearing portion of the stopper plate is left and right with respect to the outer peripheral surface of the shaft. When fitting from one side in the direction, the tip of the recess side extension of the torsion bar contacts the bottom surface of the recess, and from this point, the urging force of the torsion bar between the stopper plate and the recess. Therefore, the subsequent fitting of the bearing portion to the shaft cannot be performed smoothly due to the biasing force of the torsion bar.

When exchanging the torsion bar due to fatigue over time, the bearing portion of the stopper plate is pulled out from the shaft in the recess, contrary to the above-mentioned assembly procedure.
Since it is necessary to loosen and remove the screws of each fixing piece, the workability of attaching / detaching the torsion bar itself is poor, and the serviceability is significantly deteriorated because the work of attaching / detaching the stopper plate accompanies the replacement of the torsion bar. .

Further, when the stopper plate is rotated, the load for bending the recess-side extending portion is concentrated on the tip of the recess-side extending portion of the torsion bar, so that the tip wears and the biasing force of the torsion bar is exerted. Has a disadvantage that the bottom surface of the recess is damaged or the bottom surface of the recess with which the tip of the recess-side extending portion comes into contact is scratched, and the tip does not move smoothly with respect to the bottom surface of the recess when the stopper plate rotates.

In addition, in attaching the above-mentioned torsion bar to the back surface of the stopper plate, a pair of fixing pieces and a fixing tool such as screws are separately required, and the number of parts is increased, and each fixing piece is screwed. It is also necessary to form a screw hole on the back surface of the stopper plate, which is disadvantageous in that the cost is high in combination with the increase in the number of parts.

The present invention has been made in view of the above points, and an object of the present invention is to construct the elastic member by a torsion bar which can be mounted after the stopper plate is assembled, and to attach and detach the torsion bar itself. Performance, stopper plate assembly workability, and torsion bar serviceability, while enabling smooth opening / closing of the stopper plate, reducing the number of parts, and eliminating associated work to reduce costs. It is in.

[0011]

In order to achieve the above object, a solution means provided by the invention as set forth in claim 1 is a stop plate on which a moving body having wheels stops, and a stop plate extending in the plate width direction. The recess, the stopper plate rotatably provided in the vertical direction on one side in the vertical direction orthogonal to the plate width direction of the recess, and the stopper plate mounted between the recess and the stopper plate, It is premised on a wheel stopper device provided with a resilient member that urges upward to keep it in an upright posture, abuts the wheels of the moving body, and restricts the rolling thereof. The elastic member has a shaft portion extending in the plate width direction inside the recess, and extending from both ends of the shaft portion in a substantially V shape in a side view, alternately extending to the stopper plate side and the recess side. A torsion bar having a projecting portion is provided, and the torsion bar is configured such that the extending portions thereof are bent in a relative direction in a side view to cause a twist around the shaft portion. Further, in the other side of the stopper plate in the vertical direction and in the recess, a fitting portion that rotatably fits and supports the tips of the respective extending portions is provided so as to extend in the plate width direction.

With this configuration, in the invention according to claim 1, the elastic member, that is, the torsion bar, has the stopper plate opened, and the stopper plate side through the opening of the stopper piece and the recess of the stopper plate. The tip of the extended portion of either one of the recess and the recess is fitted and supported by the stopper plate or the fitting portion in the recess, while the tip of the other extended portion is fitted in the recess or the fitting portion of the stopper plate. It is attached by fitting and supporting. Therefore, it is possible to assemble the stopper plate in the recess with the torsion bar removed, and the stopper plate
The bearing is smoothly fitted to the shaft in the recess from one side in the plate width direction, and is assembled without being disturbed by the biasing force of the torsion bar. Also, since the torsion bar is attached by fitting and supporting the tip of each extension part to the stopper plate and the fitting part in the recess after assembling the stopper plate, the torsion bar should be replaced due to fatigue over time. When doing so, it is not necessary to remove the stopper plate from the recess, but with the stopper plate attached, you can replace the torsion bar by removing the tip of each extension from the stopper plate and the fitting part in the recess. In addition to being able to easily perform the detaching and attaching work of itself, the detaching and attaching work of the stopper plate is not required when the torsion bar is replaced, and the serviceability is remarkably improved. Further, when the stopper plate is opened and closed, the tips of the extension parts of the torsion bar rotate in the fitting part, and the extension parts bend in a relative direction to generate a twist in the shaft part. The load that bends each other is efficiently transmitted to the shaft side by the tips of the extension parts that rotate in the fitting portion, and the concentration of the bending load on the tips of the extension parts is prevented. While preventing the urging force of the torsion bar from decreasing due to abrasion, it also prevents damage to the stopper plate and the fitting part in the recess, and the tip of each extension part rotates smoothly at the fitting part without difficulty. The stopper plate can be opened and closed smoothly. Moreover, since the tips of the respective extending portions of the torsion bar are supported by the stopper plate and the fitting portion in the recess, a fixing piece for fixing the torsion bar and a fixing tool such as a screw are unnecessary, and a screw hole is provided. The drilling work is not necessary, and the cost is reduced by reducing the number of parts and eliminating the drilling work.

[0013] The solution taken by the invention of claim 2 is as follows.
The elastic member of the invention according to claim 1 is specified, and two shaft portions extending in the plate width direction inside the recess, and a stopper plate side and a recess in a substantially V shape in a side view from both end portions of each shaft portion. Parallel to each other, the extending portions alternately extending to the location side and the tips of the extending portions extending to one of the stopper plate side or the recess side of the extending portions extend substantially parallel to the respective shaft portions and are coupled to each other. And a torsion bar having a section. Then, the torsion bar is configured such that one rod is bent into each part so that the two shaft parts intersect each other.

With this configuration, in the invention according to claim 2, the torsion plate is twisted by one torsion bar to open and close the stopper plate, and the opening and closing operation of the stopper plate long in the plate width direction is performed. However, the twisting of the two shaft portions and the bending of the extension portions at both ends of each shaft portion can be performed more smoothly.

The solution provided by the invention of claim 3 is as follows.
The elastic member of the invention according to claim 1 is specified, and the shaft portion extending in the plate width direction inside the recess, and the stopper plate side and the recess side in a substantially V shape in a side view from both end portions of the shaft portion. Two torsion bars having extending portions that alternately extend are provided.
Then, the two torsion bars are formed by bending individual rods into respective parts and arranged symmetrically in plan view so that the two shafts intersect.

With this configuration, in the invention according to the third aspect, since the two torsion bars are provided with the individual shaft portions, it becomes possible to individually process each of the torsion bars. It is easier to process than the one that requires two shafts for the torsion bar. Moreover, the two torsion bars have the parallel shaft portions that are required to connect the tips of the extension portions on the stopper plate side or the recess side in the case where two torsion bars are provided in one torsion bar. Since it is not necessary, it is possible to form a short rod body that is half or less than one torsion bar, which is also advantageous in terms of cost.

The solution taken by the invention according to claim 4 is as follows.
In addition to the constituent features of the invention according to claim 2 or claim 3,
The distance between the extending portions extending to either the stopper plate side or the recess side from the two shaft portions is made wider than the distance between the extending portions extending to the other, and the distance between the extending portions is The length of each of the wide extension portions is made longer than the length of each of the extension portions having a narrow interval between the extension portions.

With this configuration, in the invention according to the fourth aspect, at the closed position of the stopper plate, inside the respective extended portions that extend longer than one of the two shaft portions toward the stopper plate side and the recess side and have a wide interval. The extension portions that extend short and have a narrow interval are accommodated on the other side of the stopper plate side and the recess side, and interference between the extension portions at the stopper plate closed position is reliably avoided.

The means for solving the problems according to the invention of claim 5 is as follows.
The elastic member according to any one of claims 2 to 4 is specified, and a connecting member for connecting two shaft portions to integrate a twist center of both shaft portions is provided. It is configured to be provided.

With this configuration, in the invention as claimed in claim 5, the torsion centers of both shafts are integrated so that the stopper plate can be smoothly opened and closed without causing a feeling of discomfort due to the two shafts.

Further, a solution means taken by the invention of claim 6 is that in addition to the constituent features of the invention of any one of claims 1 to 5, a stop plate and a stopper plate are pushed out. It is configured by a mold material, and the fitting portion is formed integrally with the stopper plate and the stopper plate by extrusion molding of the stopper plate and the stopper plate.

With this configuration, in the invention according to the sixth aspect, the recess and the fitting portion are integrally formed with the stop plate by extrusion molding of the stop plate, and the recess and the fitting portion are easily formed. The stopper piece and the fitting portion are integrally formed with the stopper plate by extrusion molding of the stopper plate, so that the stopper piece and the fitting portion are easily formed.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIGS. 1 and 2 show a tailgate (stop plate) mounted on the rear portion of a truck using a wheel stopper device according to a first embodiment of the present invention. A truck 4 (moving body) having casters 3 (wheels) is mounted on the upper surface of the tailgate 1 in a stopped state by being loaded from the rear end. The tailgate 1 is a gate plate 2 divided into three parts in the front-rear direction.
(In the figure, only the rear side and the center side are shown). The tailgate 1 is rotatably supported at the lower end position of the rear end of the luggage box (not shown). The tailgate 1 falls down along the rear surface of the luggage box and closes the rear surface thereof, and an open position where the tailgate 1 is held at a substantially right angle to the rear surface of the luggage box and opens the rear surface (shown in the figure). Position) and is rotated upward by about 90 °. Further, the tailgate 1 is moved up and down between a loading position that is substantially coincident with the bottom surface of the luggage box that allows loading of luggage into a luggage box and a mounting position that is grounded on the ground by an elevator device (not shown). It works as a lifter. Then, the luggage is mounted on a carriage 4 (moving body) equipped with casters 3 (wheels) and is mounted on the tailgate 1 together with the carriage 4 so as to move up and down between a mounting position and a loading position. ing.

At the rear end (rear side gate plate 2) which is close to one end in the vertical direction (direction orthogonal to the plate width direction) of the tailgate 1, the caster 3 of the carriage 4 is rolled on the tailgate 1. A wheel stopper device 5 that locks immovably is provided. The gate plate 2 on the rear side is provided with a recess 8 extending at the rear end thereof in the entire lateral direction (plate width direction). The car stop device 5 includes a stopper plate 7 supported on the rear end side of the tailgate 1 so as to be vertically rotatable. The recess 8 is provided with a first convex portion 9 projecting upward from the rear end of the bottom portion. The first convex portion 9 extends in the recess 8 over the entire area in the left-right direction, and a shaft 9a having a circular cross section is bulged at the tip thereof. On the other hand, at the rear end of the lower surface of the stopper plate 7, a second convex portion 10 projecting downward is provided over the entire area of the stopper plate 7 in the left-right direction. This second
A bearing recess 10a is formed in the convex portion 10 and is configured as a substantially three-quarter arc-shaped bearing portion that opens downward. The bearing recess 10a is fitted into the outer peripheral surface of the shaft 9a of the first convex portion 9 so as to be rotatable around the shaft 9a.
Then, the shaft 9a of the first convex portion 9 and the second convex portion 1
The rotation support portion 6 is configured by the bearing recess 10a of 0. The rotation support portion 6 rotatably supports the rear end of the stopper plate 7 with respect to the recess 8 and supports the stopper plate 7.
The front end side of is opened and closed. In this case, the stopper plate 7 fits the bearing recess 10 a of the second convex portion 10 to the outer peripheral surface of the shaft 9 a of the first convex portion 9 from one side in the left-right direction of the concave portion 8 while the recess 8 is formed. It can be assembled by pushing it to the other side.

At the front end of the stopper plate 7, there is provided a stopper piece 11 extending downward from the front end. The stopper piece 11 is provided over the entire area of the stopper plate 7 in the left-right direction, and is brought into contact with the caster 3 of the carriage 4 placed on the tailgate 1 when the stopper plate 7 is opened to regulate the rolling thereof. I am trying to do it. In addition, the stopper piece 11 is the stopper plate 7
Is stored in the recess 8 at the time of the closing operation, and in this state, the upper surface of the stopper plate 7 falls down so as to be flush with the upper surface of the tailgate 1 to close the recess 8. ing. On the other hand, the rear end of the stopper plate 7 (rearward of the second convex portion 10) comes into contact with the rear end of the bottom surface of the recess 8 during the opening operation of the stopper plate 7 during the opening operation of the stopper plate 7. An abutting surface 7a that holds the posture (standing posture) in the standing position is provided.

Further, as shown in FIG. 3, the recess 8 is formed.
The elastic member 12 is mounted between the stopper plate 7 and the stopper plate 7. The elastic member 12 is provided with two shaft portions 13, 13 extending in the left-right direction inside the recess 8, and both shaft portions 13 are arranged so as to intersect each other. One end (right side in FIG. 3) of one shaft part 13 (upper side in FIGS. 1 and 2) of both shaft parts 13 and the other shaft part 13
At the other end (lower side in FIGS. 1 and 2) (left side in FIG. 3), a stopper plate-side extending portion 14 that extends toward the stopper plate 7 side (upper side in FIG. 3) is provided. Also,
At the other end of the one shaft portion 13 and one end of the other shaft portion 13, the recess side extension portion 1 extending toward the recess 8 side (lower side in FIG. 3).
5 are provided. A first parallel shaft portion 16 is provided at a tip of each of the stopper plate-side extending portions 14 so as to extend so as to face each other substantially in parallel with the shaft portions 13. A second parallel shaft portion 1 is formed at the tip of each recess-side extending portion 15 so as to extend and connect the tip portions to the shaft portions 13 substantially in parallel with each other.
7 (parallel shaft portion) is provided. Each of these portions 13 to 17 is composed of one torsion bar 18 formed by bending one rod body into each of the portions 13 to 17.

The torsion bar 18 has each extension 1
4 and 15 are bent in a relative direction in a side view so that a twist is generated around the two shaft portions 13. Further, as shown in FIG. 4, in a state where no twist is generated around each of the shaft portions 13 (a state before the elastic member 12 is mounted between the stopper plate 7 and the recess 8), The stopper plate side extending portion 14 and the recess side extending portion 15 extend alternately to the stopper plate 7 side and the concave portion 8 side at an angle α from both ends of each shaft portion 13, and are substantially square in side view. It has a letter shape. Further, as shown in FIGS. 1 and 2, the extension portions 14 and 15 are bent at substantially right angles to the wide-angle side (the direction in which the extension portions 14 and 15 are deflected) with respect to each other in a side view. It is bent to have a substantially L shape, and by bending the tip portions thereof, the base end side portion is separated from the tip portions with respect to the bottom surfaces of the stopper plate 7 and the recess 8, and the stopper plate is formed. When the opening / closing operation of 7 is performed, the extending portions 14 and 15 do not interfere with first and second protrusions 21 and 23 described later.

Further, the elastic member 12 has two shaft portions 1
3 are connected to each other in a loosely fitted state, and the twist center X of both shaft portions 13 is connected.
The coil-shaped member 19 is provided as a connecting member that integrates (see FIG. 4). The coil-shaped member 19 includes both shaft portions 1
The left and right ends of 3 are individually connected,
The outer end side of the coil-shaped member 19 is wound around the front end of the stopper plate-side extending portion 14 to prevent the coil-shaped member 19 from moving toward the center of both shaft portions 13. Then, as shown in FIG. 3, the stopper plate side extension 14,
The space a between the recesses 14 is formed wider (a> b) than the space b between the recess-side extending portions 15 and 15. FIG.
As shown in, the length c of each of the stopper plate-side extending portions 14 is formed longer than the length d of each of the recess-side extending portions 15 (c> d). As a result, when the stopper plate 7 is closed, the stopper plate 7 extends toward the stopper plate 7 side from the two shaft portions 13 and has a wide space, and the stopper plate 7 extends toward the inside of each stopper plate side extension portion 14 and each first parallel shaft portion 16. The recess-side extending portions 15 and the second parallel shaft portions 17 that are shorter than the one shaft portion 13 toward the recess 8 and have a narrow interval are accommodated, and the shaft portions at the fall position of the stopper plate 7 are accommodated. 13, interference between the extension portions 14 and 15 and the parallel shaft portions 16 and 17 is surely avoided.

As shown in FIG. 5, the first parallel shaft portion 1 is provided at the front end portion of the lower surface of the stopper plate 7.
First fitting groove 20 (fitting portion) for fitting and supporting 6 rotatably
Extends over the entire area of the stopper plate 7 in the left-right direction. The first fitting groove 20 includes the stopper piece 11 and
Immediately after the stopper piece 11, between the rib-shaped first projections 21 extending along the stopper piece 11, the first parallel shaft portions 16 are formed.
Are formed at intervals larger than the outer diameter of. Further, the second parallel shaft portion 17 is provided on the front side of the bottom surface of the recess 8.
A second fitting groove 22 (fitting portion) that rotatably fits and supports is extended over the entire area of the recess 8 in the left-right direction. The second
The fitting groove 22 is formed between a pair of front and rear rib-shaped second projections 23, 23 projecting on the front side of the bottom surface of the recess 8 with a space substantially matching the outer diameter of the second parallel shaft portion 17. There is.
Further, at the front edge of the recess 8, that is, at the front end of the upper surface of the gate plate 2 on the rear side, a pair of left and right for positioning the stopper plate 7 in the fall position against the biasing force of the elastic member 12 (torsion bar 18). A locking member 24 is provided.

The tailgate 1, that is, each gate plate 2 and the stopper plate 7 are both made of an extruded die member made of aluminum. That is, the second fitting groove 22 is integrally formed with the recess 8, the first protrusion 9 (shaft 9a) and each second protrusion 23 in the rear gate plate 2 by extrusion molding of the rear gate plate 2. Has been molded. The first fitting groove 20 is formed integrally with the contact surface 7a, the second convex portion 10 (bearing concave portion 10a), the stopper piece 11 and the first protrusion 21 by extrusion molding the stopper plate 7. Is molded into.

The procedure for attaching the elastic member 12 will be described with reference to FIG.

In this case, the coil-shaped members 19 are connected to the left and right ends of the two shaft portions 13 of the torsion bar 18, respectively, to prepare the elastic member 12.

First, in a state where the stopper plate 7 is positioned at the standing position, the torsion bar 18 extends toward the respective recesses through the openings of the stopper plate 11 of the stopper plate 7 and the recess 8 which are open to the front. The portion 15 is inserted into the recess 8 (position shown by a chain line in FIG. 5), and the second parallel shaft portion 17 is rotatably fitted and supported in the second fitting groove 22 in the recess 8 (FIG. The position indicated by the solid line in FIG. 5).

Next, each stopper plate side extension portion 14 of the torsion bar 18 is viewed from the side of the narrow angle side (each extension portion 1).
4 and 15, respectively, and insert each stopper plate side extending portion 14 into the recess 8 through the opening of the stopper piece 11 of the stopper plate 7 and the recess 8.
Each of the first parallel shaft portions 16 is rotatably fitted and supported in the first fitting groove 20 at the front end of the back surface of the stopper plate 7 (position indicated by a chain double-dashed line in FIG. 5), and the attachment of the elastic member 12 is completed. To do.
At this time, since the first fitting groove 20 is formed at a larger interval than the outer diameter of each first parallel shaft portion 16, the first fitting groove 2 is formed.
Although the fitting support of each first parallel shaft portion 16 with respect to 0 is a blind work on the back surface side of the stopper plate 7, each first parallel shaft portion 16 has a margin in the first fitting groove 20 having a large interval. It can be fitted and supported.

Next, the usage of the wheel stopper device 5 will be described.

First, the tailgate 1 is lowered to the ground, and at this mounting position, the casters 3 are rolled on the upper surface of the tailgate 1 to mount the carriage 4. At this time,
The casters 3 of the carriage 4 are located in front of the wheel stopper device 5 at the rear end of the tailgate 1 (on the side of the luggage box).

Then, the front end portions of the pair of left and right locking members 24, 24 are laterally pivoted to a position where they do not overlap the upper surface of the stopper plate 7 in plan view, and the stopper plate 7 is attached to the elastic member 12. Positioned in a standing position by power. As a result, even if the caster 3 tries to move rearward, the caster 3 comes into contact with the stopper piece 11 of the stopper plate 7 so that the rearward rolling of the caster 3 is restricted and the cart 4 is prevented from falling from the tailgate 1.

After that, the tailgate 1 is raised to the loading position, and at this loading position, the carriage 4 is moved forward to load the luggage on the carriage 4 into the luggage box. After a while
Roll the caster 3 of the trolley 4 that has emptied the luggage and emptied it, and place it on the front side of the wheel stopper device 5 of the tailgate 1,
The caster 3 is attached to the stopper piece 11 of the stopper plate 7.
To prevent rolling backward. then,
Lower the tailgate 1 and position it at the mounting position.

At this mounting position, the operator pushes down the stopper plate 7 with his / her foot or the like to lie down against the urging force of the elastic member 12, and the upper surface of the stopper plate 7 faces the upper surface of the tailgate 1. After the elastic member 12 and the stopper piece 11 are housed in the recess 8 by locating them in a collapsed position that forms a single shape, the tip ends of the pair of left and right locking members 24, 24 are overlaid on the recess 8 in plan view. The stopper plate 7 is rotated to the wrapping position and the front end side of the upper surface of the stopper plate 7 is pressed to position the stopper plate 7 at the fall position. As a result, the casters 3 of the dolly 4 can roll to the rear end side of the tailgate 1, and the casters 3 roll backward from above the tailgate 1 to drop the dolly 4 on the ground.

As described above, in the first embodiment,
With the torsion bar 18 (elastic member 12) removed, the bearing recess 1 of the second protrusion 10 of the stopper plate 7
0a from the one side of the recess 8 in the left-right direction to the shaft 9a of the first convex portion 9a.
It becomes possible to assemble the stopper plate 7 into the recess 8 by fitting it to the outer peripheral surface of the
In the stopper plate 7, the second convex portion 10 is smoothly fitted to the outer peripheral surface of the shaft 9a of the first convex portion 9 from one side in the left-right direction, and is hindered by the biasing force of the torsion bar 18. The stopper plate 9 can be assembled in the recess 8 without the need.

The torsion bar 18 is attached by fitting and supporting the first and second parallel shaft portions 16 and 17 in the first and second fitting grooves 20 and 22 after the stopper plate 7 is assembled. Therefore, when exchanging the torsion bar 18 due to fatigue over time, it is not necessary to remove the stopper plate 7, and with the stopper plate 7 attached, the first and second parallel shaft portions 16 and 17 are Second
The torsion bar 18 can be replaced by removing it from the fitting grooves 20 and 22, and the work of attaching and detaching the torsion bar 18 itself can be easily performed. The work of attaching and detaching the stopper plate 7 becomes unnecessary when replacing the torsion bar 18. Can be significantly improved.

Further, when the stopper plate 7 is opened and closed, the first and second parallel shaft portions 16 and 17 of the torsion bar 18 are formed.
Rotate in the first and second fitting grooves 20 and 22, and the stopper plate-side and recess-side extending portions 14 and 15 bend relative to each other to cause the shaft portions 13 to be twisted. From the above, the load for bending the stopper plate-side and recess-side extending portions 14 and 15 is caused by the first and second parallel shaft portions 16 and 17 that rotate in the fitting grooves 20 and 22, respectively. Will be efficiently transmitted to the first and second parallel shaft portions 16,
While the bending load can be prevented from concentrating on 17 to prevent the urging force of the torsion bar 18 from decreasing due to wear, the back surface of the stopper plate 7 and the bottom surface of the recess 8 are scratched, that is, the first and second fitting grooves. The first and second fitting grooves 2 of the first and second parallel shaft portions 16 and 17 are also prevented by preventing damage to the 20 and 22.
The rotation of the shafts 0 and 22 can be smoothly performed, and the two shaft portions 13 are connected to each other by the coil-shaped member 19 which connects the two shaft portions 13 and integrates the twist centers X of the two shaft portions 13. The opening / closing operation of the stopper plate 7 can be smoothly performed without causing a feeling of strangeness. Further, one torsion bar 18 causes the two shafts 13 to be twisted, and the left and right ends of the shaft 13 have stopper plate sides and recess-side extending portions 14 and 15 for the left and right sides of the stopper plate 7. Since the stopper plate 7 is opened and closed by urging both end portions, the opening and closing operation of the stopper plate 7 that is long in the left-right direction can be performed more smoothly.

Moreover, the first and second parallel shaft portions 16 and 17 of the torsion bar 18 are connected to the first and second fitting grooves 20 and 20, respectively.
Since it is supported by 22, it is not necessary to provide a fixing piece for fixing the torsion bar 18 and a fixing tool such as a screw, and also a drilling work for a screw hole is not necessary, so that the number of parts is reduced and the drilling work is eliminated. The cost can be reduced.

Furthermore, since each gate plate 2 and the stopper plate 7 of the tailgate 1 are made of an extruded mold material made of aluminum, the recess 8 and the first convex portion 9 (axial portion) are formed by extruding the rear gate plate 2. 9a) and the respective second protrusions 23 can be integrally molded to easily mold the second fitting groove 22, and the contact surface 7a and the second convex portion 10 ( It is possible to easily form the first fitting groove 20 by integrally molding the bearing recess 10a), the stopper piece 11 and the first protrusion 21.

(Second Embodiment) FIG. 6 relates to a second embodiment of the present invention. In this embodiment, the structure of the elastic member is changed.

That is, in the present embodiment, as shown in FIG. 6, the elastic member 31 includes the shaft portion 13 and both end portions of the shaft portion 13 in the shape of a dogleg in a side view toward the stopper plate 7 side. And the recess plate-side extending portions 14 and 15 alternately extending to the recess 8 side, and substantially parallel to the shaft portions 13 from the tips of the stopper plate-side and recess-side extending portions 14 and 15. Two torsion bars 32 having a first parallel shaft portion 16 extending in a direction facing each other are provided. The first parallel shaft portion 16 on the side of the stopper plate 7 and the parallel shaft portion 16 on the side of the recess 8 have first and second fitting grooves 20, 22 respectively.
It is rotatably fitted and supported by. The two torsion bars 32 are each composed of an individual rod body and each portion 13
It is formed by bending every 16 to 16 and is arranged symmetrically in a plan view so that the shaft portions 13 of each cross each other.

The elastic member 31 has two shaft portions 1
3 are connected to each other in a loosely fitted state, and the twist center X of both shaft portions 13 is connected.
The coil-shaped member 33 is provided as a connecting member that integrates the. The coil-shaped member 33 connects the left and right ends of both shaft portions 13, respectively.
9 is arranged over substantially the entire length of the two shaft portions 13.
The coil-shaped member 33 is wound so that the winding width is close in the vicinity of the left and right end portions of both shaft portions 13, whereas
In the vicinity of the central portion of both shaft portions 13, the winding is performed so that the winding width becomes sparse. The rest of the configuration except the elastic member 31 is the same as that of the above-described embodiment, and the same portions are denoted by the same reference numerals and detailed description thereof is omitted.

Therefore, in the second embodiment described above,
Since the elastic member 31 is composed of the two torsion bars 32, the torsion bars 32 can be processed individually, and one long torsion bar requires two shaft portions. Processing can be performed more easily than in. Moreover, two torsion bars 32
In the case where one torsion bar is provided with two shaft portions, the second parallel shaft portion that connects the tips of the recess-side extending portions to each other is not required, and therefore, the short length of one torsion bar or less is half or less. Since it can be formed with a simple rod body, it is also advantageous in terms of cost.

The present invention is not limited to the above-mentioned embodiments, but includes various modifications. For example, in each of the above embodiments, the tailgate 1
The case where the trolley 4 capable of carrying luggage is placed on the above, but any moving body having wheels may be used, and the moving body is stopped on a stop plate such as the floor of the vehicle to be transported in the horizontal direction. Of course, it may be done.

Further, in each of the above-described embodiments, the tip of at least one of the stopper plate side and the recess side extending portions 14, 15 is formed by the first parallel shaft portion 16 into the first and second fitting grooves 20, The first parallel shaft portion is not particularly required, and at least one of the stopper plate side and the recess side extending portion has a fitting groove. Alternatively, the fitting portion may be directly rotatably fitted to and supported by the fitting portion.

Further, in each of the above embodiments, the torsion bars 18 and 32 having the two shaft portions 13 are used.
One shaft portion, extending portions that alternately extend from both end portions of the shaft portion to the stopper plate side and the recess side in a V shape in a side view, and the shaft portions from the tips of the extending portions. It may be a torsion bar having a parallel shaft portion extending substantially in parallel, that is, one of the two torsion bars used in the second embodiment.

Moreover, in the first embodiment, the second parallel shaft portion 17 of the torsion bar 18 is fitted and supported in the second fitting groove 22, and then the first parallel shaft portion 16 is first fitted. Groove 20
The torsion bar 18 was fitted to and supported by the first parallel shaft portion in the first fitting groove, and then the second parallel shaft portion was fitted in and supported by the second fitting groove. A torsion bar may be attached. Further, each of the first parallel shaft portions may be fitted and supported in the second fitting groove, and the second parallel shaft portion may be fitted and supported in the first fitting groove. Moreover, in the first embodiment described above, the outer end side of each coil-shaped member 19 is wound around the tip of the stopper plate-side extending portion 14, but each coil-like member is wound at the tip of the recess-side extending portion. The outer end side of the member may be wound to prevent movement of the coiled member toward the center side of both shaft portions.

Furthermore, in each of the above-mentioned embodiments, the coil-shaped members 19 and 33 are used as the connecting members, but it is possible to connect the two shaft portions and integrate the twist centers of the both shaft portions. As long as it has any shape, it may have any shape.

[0055]

As described above, according to the wheel stopper device of the first aspect of the present invention, the stopper plate and the fitting portion for rotatably fittingly supporting the respective extension portion tips of the torsion bar are provided in the recess. Since it is provided, it is possible to improve the mountability of the torsion bar and the assemblability of the stopper plate, and the workability of attaching and detaching the torsion bar itself and the torsion bar by only the fitting and support of the tips of the extension parts to the fitting part. It is also possible to improve serviceability at the time of replacement. Moreover, it is possible to prevent the biasing force of the torsion bar from being deteriorated due to wear at the time of opening / closing the stopper plate and prevent the fitting groove from being damaged, so that the opening / closing operation of the stopper plate can be smoothly performed, and the fixing for fixing the torsion bar Costs can be reduced by eliminating tools and associated work.

According to the wheel stopper device of the second aspect of the present invention, since the stopper plate is opened and closed by one torsion bar, the opening and closing operation of the stopper plate which is long in the lateral direction is performed by twisting both shaft portions and both ends thereof. It can be performed more smoothly by bending the extension portions.

According to the wheel stopper device of the third aspect of the present invention, since the two torsion bars are respectively provided with the shaft portions, it is possible to individually process each torsion bar and simplify the processing. It is possible to further reduce the cost by forming each torsion bar with a short rod.

According to the wheel stopper device of the fourth aspect of the present invention, the extending portions which are short and have a narrow spacing can be housed inside the extending portions which are long and have a wide spacing at the laid position of the stopper plate. It is possible to reliably avoid mutual interference between the extending portions at the fall position of the stopper plate.

According to the wheel stopper device of the fifth aspect of the invention, the torsion centers of the two shaft portions are integrated by the connecting member of the two shaft portions, so that the stopper plate of the stopper plate is not brought about by the two shaft portions. Opening and closing operations can be performed smoothly.

Further, according to the wheel stopper device of the present invention, since the stop plate and the stopper plate are formed by the extrusion mold material, each fitting portion is easily formed by the extrusion molding of the stop plate and the stopper plate. be able to.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a car stop device in a state where a stopper plate according to a first embodiment of the present invention is positioned at a standing position.

FIG. 2 is a view corresponding to FIG. 1 in a state in which the stopper plate is positioned at a fall position.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a side view of the elastic member.

FIG. 5 is a view corresponding to FIG. 1 for explaining a procedure for attaching the same elastic member.

FIG. 6 is a view corresponding to FIG. 3 according to the first embodiment of the present invention.

[Explanation of symbols]

 1 Tailgate (Stop Plate) 3 Casters (Wheels) 4 Bogie (Movable Body) 5 Wheel Stopper 7 Stopper Plate 8 Recess 12 and 31 Repulsive Member 13 Shaft 14 Stopper Plate Side Extender (Extender) 15 Recess side extended portion (extended portion) 17 Second parallel shaft portion (parallel shaft portion) 18,32 Torsion bar 19,33 Coil-shaped member (coupling member) 20 First fitting groove (fitting portion) 22 2 Fitting groove (fitting part) a Distance between stopper plate side extending parts b Distance between recess side extending parts c Length of stopper plate extending part d Length of recess side extending part X Twisting center

Claims (6)

[Claims] 1. A stop plate on which a moving body having wheels stops, a recess extending in the plate width direction of the stop plate, and a vertical rotation to one side in a vertical direction orthogonal to the plate width direction of the recess. The stopper plate is freely installed, and is mounted between the recess and the stopper plate, and the stopper plate is pivotally urged upward to hold it in an upright posture to bring the wheels of the moving body into contact with the stopper plate. A wheel stopper device comprising an elastic member that regulates rolling, wherein the elastic member is substantially axially extending from the both ends of the shaft portion and both end portions of the shaft portion in the plate width direction. A torsion bar having extending portions that alternately extend to the stopper plate side and the recess side in a square shape, and the torsion bar is
The extension portions are configured to be bent in a relative direction in a side view to generate a twist around the shaft portion, and the extension portions are provided in the other side in the vertical direction of the stopper plate and in the recess. A wheel stopper device, wherein a fitting portion for rotatably fittingly supporting the tip of the protruding portion is provided extending in the plate width direction. 2. The elastic member includes two shaft portions extending in the plate width direction inside the recess, and a stopper plate side and a recess in a substantially V shape in a side view from both end portions of each shaft portion. Side extending alternately, and a parallel shaft portion connecting the ends of the extending portions extending to one of the stopper plate side or the recess side of each of the extending portions so as to extend substantially parallel to the respective shaft portions. 2. A torsion bar having: and a torsion bar, wherein the torsion bar is formed such that one rod is bent into each part so that two shaft parts intersect each other.
Wheel stop device described. 3. The elastic member comprises a shaft portion extending in the plate width direction inside the recess, and alternates between the stopper plate side and the recess side in a dogleg shape in a side view from both end portions of the shaft portion. Two torsion bars each having an extending portion extending in the direction are provided. These two torsion bars are formed by bending individual rod bodies into respective portions, and planarly viewed so as to intersect the two shaft portions. The wheel stopper device according to claim 1, wherein the wheel stopper device is symmetrically arranged. 4. The interval between the extending portions extending from the two shaft portions to either the stopper plate side or the recess side is
The extension portions are formed so as to be wider than the intervals between the extension portions extending to the other, and the lengths of the extension portions in which the extension portions are wide are equal to each other. The wheel stopper device according to claim 2 or 3, which is formed to be longer than the length of the portion. 5. The elastic member is provided with a connecting member which connects two shaft parts and integrates the twist centers of the both shaft parts. The wheel stop device according to one. 6. The stop plate and the stopper plate are made of extruded mold material, and the fitting portion is integrally formed in the recess of the stop plate and the stopper plate by extrusion molding of the stop plate and the stopper plate. The wheel stopper device according to any one of claims 1 to 5.