JP3040924B2 - Vehicle rear entanglement prevention device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle rear entanglement prevention device provided at the rear of a truck vehicle used for road construction or the like in order to secure the safety of an object behind or a person at the time of retreat.

[0002]

2. Description of the Related Art In a general truck vehicle, since a floor of a bed is high, a considerably high space is formed below the bed as viewed from the rear. When a low-height passenger car collides with such a truck vehicle, the passenger car may fall into this space and the rear end of the cargo bed may directly hit the driver of the passenger car. A horizontal bumper-shaped rush prevention frame is provided fixed to the rear part of the vehicle. When the truck is retracted, this rush prevention frame can be used in the space below the cargo bed and in the rear wheels.
It was expected to function as a vehicle rear entanglement prevention device to prevent accidental entanglement of rear luggage, various work equipment and workers.

However, the rush prevention frame is fixed integrally with the vehicle frame and has rigidity that does not yield to the collision of another vehicle, so that the rush prevention frame can be used on a hill or a sidewalk even if the loading platform sinks in the maximum loading state. It will be located at a very high position to avoid interference. In addition, since the rush prevention frame has a structure that cannot be easily removed, the rush prevention frame is provided at a position as high as possible in consideration of the convenience of repair inspection work and spare tire removal work. Therefore, a high space remains under the intrusion prevention frame, and through the intrusion prevention frame, low luggage, a work trolley, a floor cleaner, a flower pot, a worker in a squatting posture, etc. The possibility of getting caught in the wheel remained. In addition, it has been pointed out that the intrusion prevention frame is insufficient as a vehicle rear-entry prevention device in terms of the length in the vehicle width direction, the overall shape and structure, the flexibility, and the like.

Japanese Patent Laid-Open No. 6-211092 discloses a dedicated vehicle rear entanglement prevention device which solves such a problem and further secures the safety of a rear object or a person when the truck vehicle is retracted. Is shown in Here, a bumper member connected to the vehicle frame by a link mechanism is suspended via a damper to a height of a low ground level. The bumper member movable upward by the damper is configured to escape upward when the link member or the like interferes with the road surface.

[0005]

Problems to be Solved by the Invention
The entanglement prevention device disclosed in Japanese Patent Application Publication No. 2 (1999) -1995 holds a wide and planar bumper member at a low height position, so that even low luggage and equipment placed on a road can be pushed away. Moreover, when the bumper member interferes with the road surface, the bumper member escapes upward, so that damage to the road surface and a direct impact on the vehicle frame can be avoided.

However, since the bumper member escapes by relying on a direct collision with the road surface, when running on a general road at a considerable speed, a loud noise is generated every time the entanglement prevention device interferes with the road surface. There is a problem to do. Drivers are also unpleasantly shocked and polluted in residential areas late at night. The road surface is also damaged. In a truck vehicle, the height of the vehicle frame differs by 5 cm or more between the maximum loaded state and the unloaded state. Therefore, the height of the bumper member from the ground also changes by 5 cm or more between the maximum loaded state and the unloaded state. As a result, in the maximum loaded state, the frequency of collision between the entanglement preventing device and the road surface is significantly increased. Also, if the rear wheel falls into the groove or the bumper collides with the sidewalk height at the corner, the bumper or link member may be permanently deformed and lose its normal function. is there. However, if the mounting height of the bumper member is increased in order to avoid such inconvenience, it becomes impossible to normally push down low luggage, equipment placed on the road, and the like in an empty state.

[0007] Therefore, it has been proposed that the entanglement prevention device be provided at a place where the entanglement prevention device is required, such as a construction site such as road construction, a loading / unloading site, and the like, and the entanglement prevention device is removed before traveling on a general road. However, JP
The entanglement prevention device disclosed in Japanese Patent No. 211092 has a large number of parts, is heavy, has a plurality of attachment portions for the entanglement prevention device with respect to a vehicle frame, is far away, and has a poor mountability of the removed entanglement prevention device. There is a problem in that it takes time to install and installation work is difficult and time is spent.

Furthermore, the entanglement prevention device disclosed in Japanese Patent Application Laid-Open No. 6-211092 is inferior in rigidity and mounting rigidity as compared with the conventional rush prevention frame, and the entanglement prevention device alone cannot eliminate rear-end collision of a low-height passenger car. . Therefore, both the rush prevention frame and the entanglement prevention device are arranged at the rear of the truck vehicle, which makes the design complicated and the mounting structure of the entanglement prevention device becomes complicated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle rear entanglement preventing device which can be easily attached to and detached from a truck vehicle, has a small number of parts, has a simple structure, and can easily avoid collision with a road surface.

[0010]

According to a first aspect of the present invention, there is provided a vehicle rear entanglement prevention device provided at a rear portion of a truck vehicle, wherein the traction prevention frame is fixed to a vehicle frame of the truck vehicle. and attachable securing mechanism Te, fixed to said fixing mechanism has an entrainment and prevention portion is extended in a planar downward from the inrush prevention frame, the entanglement preventing portion is outwardly downward
A curved surface that curves toward the lower end of the curved surface.
It is assumed that the minute portion protrudes rearward.

According to a second aspect of the present invention, there is provided a vehicle rear entanglement preventing device.
A vertical restraint portion detachably attached to the intrusion prevention frame for holding the intrusion prevention frame inside and vertically restraining the vertical restraint portion; And a horizontal restraint member that is detachably attached to the frame and that restrains the intrusion prevention frame in the front-rear direction.

According to a third aspect of the present invention, there is provided a vehicle rear entanglement preventing device.
3. The support member having a U-shaped cross section in which the vertical restraint portion in the configuration of claim 2 fixes the entanglement preventing portion and forms a through-hole of the horizontal restraint member, and the projecting portion extends in the U-shaped cross section. And a spacer member vertically arranged on the prevention frame.

According to a fourth aspect of the present invention, there is provided a vehicle rear entanglement preventing device.
In the configuration according to any one of claims 1, 2 and 3, the entrainment prevention unit includes a sensor for detecting contact or impact of an object.

According to a fifth aspect of the present invention, there is provided a vehicle rear entanglement preventing device.
5. The winding prevention part according to claim 1, 2, 3 or 4, which is fixed to the fixing mechanism and extends downward in a planar manner.
Upper plate and a lower edge of the upper plate so as to be rotatable upward.
Attached, extended downwardly in a planar curve, and the lower end
And a lower plate that protrudes rearward
With the upper plate folded in two
A lock mechanism for locking the lower plate, and a rotation range of the lower plate.
A limit that limits the enclosure and makes it impossible to rotate forward
And a mechanism .

[0015]

[Action] The vehicle rear entanglement prevention device according to claim 1 is a tiger.
Lower inrush protection at the rear of the vehicle than the vehicle frame
To the front of the rush prevention frame.
Intrusion prevention frame from the corresponding support structure or vehicle frame
A support structure corresponding to the height difference up to the height is not required. Follow
If the rush prevention frame is in the way of installation
Instead, the same size of the entanglement prevention unit is referred to
No. 092, the front position of the vehicle frame
Support structure is smaller and lighter than
I'm done.

Further, since the intrusion prevention frame is functionally arranged so as to be easily accessible from the rear of the truck vehicle, workability is good for mounting and removing the vehicle rear entanglement prevention device. The entrapment prevention section shields the space below the intrusion prevention frame in a wall shape, and when the truck vehicle is retracted, it can effectively push back even low-height luggage and equipment placed on the road etc. Avoid getting caught in the space under the cargo bed or the rear wheels.

At this time, the entanglement preventing portion is directed to the outside of the vehicle.
It is curved like a skirt and protrudes outward
The part first contacts the obstacle. In other words,
The stop is shock-resistant by the rear end of the loading
Prior to collision, shun obstacles by the elasticity of the curved surface
Collide to raise. Stiffer than anti-rush frame
Low on the obstacle side due to collision
It only takes a minute.

According to a second aspect of the present invention, there is provided a vehicle rear entanglement preventing device .
Can it be detachably attached to the inrush prevention frame?
Easily remove it from the vehicle body when it is unnecessary or
Can be removed. Penetrates horizontal restraint through vertical restraint
Let's assemble a solid framework with one touch. This frame
The set firmly restrains the cross section of the intrusion prevention frame,
Resistance against the moment acting on the jam prevention part. to this
When the entanglement prevention unit removes obstacles,
Attachment angle of the entanglement prevention part to the prevention frame
It is kept constant.

According to a third aspect of the present invention, there is provided a vehicle rear entanglement prevention device, wherein a rush prevention frame is provided inside a U-shaped cross section of a support member.
Cross section and the cross section of one or more spacer members overlap vertically
Is held. Located above the cross-section of the
Moving the space member below the cross section of the intrusion prevention frame
The space where the ground height of the entanglement prevention part has moved
Lower by the thickness of the member. Conversely, the space located below
If you move the member upward, the ground height of the
It increases by the thickness of the moved space member. Large loading weight
Even if the height of the inrush prevention frame changes due to small
The height of the entanglement prevention unit
Can be adjusted consistently.

According to a fourth aspect of the present invention, a safety device or an alarm device is provided by using an output signal of a sensor.
Can start. As a result, obstacles come into contact with the
Limit the damage to a small area when touched, or perform necessary operations
Can be promptly taken by the driver.

According to a sixth aspect of the present invention, there is provided a vehicle rear entanglement prevention device.
The present invention is applicable to both a wrap preventing device that is detachable from the rush preventing frame and a wrap preventing device that is semi-permanently fixed to the rush preventing frame from the beginning. The upper plate and the lower plate are assembled in a hinge shape and provided with a limit mechanism (stopper) for preventing the lower plate from rotating forward. When the lock mechanism is released and the lower plate is pivoted downward and suspended from the upper plate, the upper plate and the lower plate cooperate to block the space below the intrusion prevention frame into a wall shape. . On the other hand, in a state where the lower plate is rotated upward and lifted by the lock mechanism, a wide space corresponding to the width of the lower plate is formed instead of the entanglement prevention range being limited to the ground height of the upper plate, The collision of the device with the road surface is completely avoided.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an explanatory diagram of the entanglement preventing device of the first embodiment, FIG. 2 is an explanatory diagram of a lifting function,
FIG. 3 is an explanatory diagram of the structure of the entanglement preventing device, and FIG. 4 is an explanatory diagram of the indoor arrangement of the alarm device. In FIG. 1, (a) shows the rear part of the truck vehicle, and (b) shows the assembly of the entanglement preventing device. 2A shows a suspended state, and FIG. 2B shows a suspended state.

In FIG. 1A, a bracket 11A is welded to a rear end portion of a vehicle frame 11 that penetrates a truck vehicle in the front-rear direction, and an inrush prevention frame 12 is fixed to the bracket 11A by screws. The rush prevention frame 12
It is horizontally arranged at a height position assuming a rear-end collision height of a passenger car, and leaves a space of a distance D1 between itself and the ground. The entanglement prevention frame 12 is attached with the one-touch type with the entanglement prevention device 13 shown in FIG. The entanglement prevention device 13 blocks the space of the distance D1 in a planar manner.

In FIG. 1B, the entanglement preventing device 13 has an upper plate 13A and a lower plate 13B connected by a hinge 17. The lower plate 13B is rotatable upward by the hinge 17 and can be entirely lifted in a folded state. The entanglement preventing device 13 hooks the vertical restraining portion 13K having a U-shaped cross section formed at the upper portion on the intrusion prevention frame 12, and suspends the entire own weight. A plurality of spacers 14 are arranged in the vertical restraint portion 13K. The upper and lower cross sections of the intrusion prevention frame 12 are held with a slight gap left by the vertical restraint portion 13K that sandwiches the plurality of spacers 14. U for round bar
The front pin 16 and the rear pin 15 formed in a U-shape form an upper plate 13A.
Inserted from the top of the. The front pin 16 and the rear pin 15
It penetrates vertically through the space of the vertical restraint portion 13 </ b> K to restrain the front and rear of the cross section of the intrusion prevention frame 12.

The lock mechanism for fixing the lifted lower plate 13B to the upper plate 13A includes a hook 19A fixed to the upper plate.
And a fastener 19B attached to the lower plate 13B. The lower end of the lower plate 13B is curved outward and protrudes rearward. The touch sensor 18 is attached to the rearmost portion of the lower plate 13B. The touch sensor 18 is disposed over the entire length of the entanglement preventing device 13 in the vehicle width direction. When the touch sensor 18 comes into contact with an obstacle, the touch sensor 18 partially elastically deforms to exhibit cushioning properties and closes an internal switch contact.

In FIG. 2A, the fastener 19B
Is released from the hook 19A and the lower plate 13B is suspended, the lower end portion of the entanglement preventing device 13 is located at a height of about 10 cm from the ground. In FIG. 2B, in a state where the lower plate 13B is lifted and the fastener 19B is restrained by the hook 19A, the lower end portion of the entanglement preventing device 13 is lifted up to a height of a distance D2 from the ground, and the vehicle body moves up and down within the maximum range of the suspension. Even if the obstacle is about the height of a normal sidewalk, collision does not have to occur.

FIG. 3 is a side sectional view showing details of the structure of the entanglement preventing device 13 shown in FIG. 1B. The rush prevention frame 12 is fixed to the vehicle frame 11 via a bracket 11A. The entanglement prevention device 13 is first supported by being hooked on the intrusion prevention frame 12. In this state, the front pin 16 and the rear pin 15 are inserted from above, and the front and rear of the section of the intrusion prevention frame 12 are restrained.

An upper plate 13A formed into an L-shaped cross section,
The lower plate 13 </ b> B formed into a mold cross section is connected by a hinge 17. The lower plate 13B can be lifted around the hinge 17 to a position indicated by a broken line. A back plate 13C formed into an L-shaped cross section is integrally connected to the back surface (front side) of the upper plate 13A. The lower portion of the back plate 13C reaches the rear surface of the lower plate 13B beyond the hinge 17, and forms a stopper (limit mechanism) that prevents the lower plate 13B from rotating forward. The L portions of the upper plate 13A and the back plate 13C cooperate with the three spacers 14 to restrain the cross section of the intrusion prevention frame 12 up and down. Inrush prevention frame 12
By adjusting the distribution of the spacers 14 above and below, the height above the ground at the lower end of the entanglement preventing device 13 can be adjusted. When it is desired to lower the height of the entanglement preventing device 13 above the ground, the number of spacers 14 disposed on the intrusion prevention frame 12 is reduced, and the number of spacers 14 disposed below is increased. If it is desired to increase the ground height of the entanglement preventing device 13, on the contrary, the number of spacers 14 arranged on the intrusion prevention frame 12 is increased, and the spacers 14 arranged below are increased.
Reduce the number of. Therefore, the ground height of the entanglement preventing device 13 can be adjusted in increments of one thickness within a range corresponding to the thickness of the three spacers 14.

The fastener 19B has a structure in which a loop portion to be hooked on the hook 19A is urged by an internal spring and laid back and forth to avoid an upright state. When the lower plate 13B is lifted to the position shown by the broken line, the loop
Stabilizes in the state of being hooked on 9A. On the other hand, the lower plate 13
When B is hung, the loop part jumps forward.

In FIG. 4, an alarm device 20 is fixed on a dashboard in a driver's seat of a truck vehicle. The alarm device 20 is connected to the sensor 18 of the entanglement prevention device 13 shown in FIG. Alarm device 2
0 has a lamp 20A and a buzzer 20B, and when the entanglement prevention device 13 collides with an obstacle and the sensor 18 functions, the lamp 20A flashes and the buzzer 20B sounds, and the presence of the obstacle is promptly determined. Notify the driver to urge the driver to perform necessary operations such as brake operation and check.

According to the entanglement prevention device of the first embodiment configured as described above, the rush prevention frame originally firmly fixed at a position lower than the vehicle frame is selected as the mounting position of the entanglement prevention device. Since there,
Not only does the intrusion prevention frame hinder the mounting and removal, but also the support structure is shorter than in the case of supporting the entanglement prevention device from the vehicle frame, and sufficient support rigidity can be ensured even with a small and lightweight support structure. Therefore,
Attachment and removal of the entanglement prevention device are facilitated, and the removed entanglement prevention device is excellent in handleability, transportability, and mountability on a vehicle body.

Further, when attaching the entanglement prevention device, the entire entanglement prevention device is first suspended and supported by the intrusion prevention device, and the front pin and the rear pin may be brought in and inserted in this state. But it can be installed quickly. Therefore, it is not difficult to frequently install and remove the entanglement prevention device according to time and place,
It is possible to predictably avoid a situation in which a collision prevention device collides with a road surface on a general road to generate noise or damage the road surface.

The compatibility between the function of preventing the entanglement of the entanglement device and the space on the road surface when it is not necessary can be ensured in the following manner in addition to the entire installation and removal. (1) Even when the entanglement prevention frame is still attached to the intrusion prevention frame, when unnecessary, the lower plate can be lifted to secure a wide space between the lower plate and the ground. (2) The height of the lower end of the entanglement preventing device can be set optimally by adjusting the spacer. (3) When the anti-roll-up device interferes with the road surface while the lower plate is suspended and moving forward, the lower plate rotates rearward around the hinge with a relatively small load. And escape, and the impact due to the collision is suppressed. For example, when a truck vehicle travels over a protrusion on a road surface at a road construction site or the like and moves forward, it is possible to prevent a situation in which the lower plate is damaged due to collision with the protrusion. With these functions, unnecessary interference with the road surface during loading / unloading work or driving on ordinary roads is avoided without impairing the entanglement prevention function, and noise and damage are maximized even if interference occurs. It can be suppressed.

In addition, since the lower end of the lower plate is curved outward to collide against an obstacle at the time of retreat so as to scoop up, a low load or a hand push can be placed in a narrow gap between the lower plate and the ground. There is no fear of causing catastrophic damage by dragging the cart. In addition, since the touch sensor is provided so as to occupy the entire length in the vehicle width direction of the most rearward protruding portion of the entanglement prevention device, there is no fear of failing to detect an obstacle colliding with the entanglement prevention device at the time of retreating, and When an object is detected, the driver is promptly notified and necessary operations are taken, so that danger and damage to workers and luggage behind can be minimized.

In this embodiment, the entanglement prevention unit is set to one.
Although a single-plate structure is used, the structure may be replaced with a structure in which a metal frame is covered with a metal mesh or a lattice structure. The upper surface of the upper plate may be cut out and raised in the shape of a claw, and the side of the intrusion prevention frame may be restrained at two rising portions, so that the movement of the entanglement prevention device along the intrusion prevention frame may be prevented. A hole for inserting the front pin may be formed in the intrusion prevention frame, and the upper plate, the back plate and the intrusion prevention frame may be integrally penetrated by the front pin. Further, the structure for fixing the entanglement prevention portion to the intrusion prevention frame may be replaced with another structure as follows, for example. (1) A frame adapted to the cross section of the intrusion prevention frame is attached to one of the left and right sides of the upper plate. The cross-section of the intrusion prevention frame is inserted into the frame body, and the entanglement prevention device is slid from one side to the other side. After that, another frame is inserted from the opposite side of the intrusion prevention frame and fixed to the upper plate with screws. (2) A structure in which the upper end of the upper plate is bent in a hook shape and hooked on the upper edge of the U-shaped cross section of the intrusion prevention frame. A bolt hole is formed on the front side of the intrusion prevention frame, and the upper surface of the upper plate is fixed with screws.

In this embodiment, the output of the touch sensor 18 is used only for an alarm. However, the output of the touch sensor 18 may be used as a trigger signal for a safety device having a function of stopping the engine or starting the brake. Further, in the present embodiment, the lower plate is lifted by hand, but the motor and the limit sensor are incorporated in the entanglement prevention device, and the lower plate is automatically lifted and lowered by operating from the driver's seat. Is also good.

FIG. 5 is an explanatory view of the entanglement preventing device according to the second embodiment. Here, two short side portions 22 are added to both side surfaces of the entanglement preventing device 13 of the first embodiment. In FIG. 5, the side portion 22 is formed by connecting a lower plate 22B formed into a J-shaped cross section with a hinge 27 to an upper plate 22A formed into an L-shaped cross section. Hinge 2
A stopper is provided on the back side of 7 so that the lower plate 22B cannot rotate to the back side. When fixing the side portion 22 to the entanglement preventing device 13, the upper plate 22A is superimposed on the upper plate 13A, the bolt 23 is inserted from above, and a nut (not shown) is tightened from below the upper plate 13A.

According to the entanglement preventing device of the second embodiment constructed as described above, equipment, workers and luggage that fall down from the side (or are positioned diagonally backward) are entangled during retreat or turning backward. Things can be avoided.

[0039]

According to the present invention, the device for preventing the rear-side entanglement of the vehicle is reduced in size and weight, and the workability of mounting and dismounting is improved. The design balance with the intrusion prevention frame when the truck vehicle is viewed from behind is also improved. When the anti-entrapment function is unnecessary, it can be removed, loaded and unloaded and installed at the site, causing noise or damaging the road surface by interfering with the bumps on the road or sidewalk while driving on ordinary roads. Disappears. The structure that facilitates mounting and dismounting saves time without making the mounting and dismounting work painful. And especially, prevention of entanglement
Section has a curved surface, and the lower end of the section is
Raked up the colliding object and rolled it
Avoid dragging into the narrow space below the anti-trap device
obtain. Also, since the rigidity is lower than the rush prevention frame,
Damage to obstacles is also minimal.

When a spacer member is used, the same vehicle rear entanglement prevention device can be used for rush prevention frames having different thicknesses and mounting heights. Therefore, there is no need to take into account different types of trucks and trucks with different loads.
One device can be used sequentially by a plurality of truck vehicles. Equipped with a sensor, it is possible to quickly execute a measure corresponding to a collision with an obstacle, thereby minimizing damage to workers behind, luggage, and own vehicle.

When the vehicle rear entanglement preventing device is formed in a hinge shape, the impact when the vehicle rear entanglement preventing device interferes with a road surface or the like during forward movement is suppressed. In addition, when it is unnecessary, it is only necessary to keep the apparatus in a suspended state while the apparatus is mounted.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a entanglement preventing device according to a first embodiment.

FIG. 2 is an explanatory diagram of a lifting function.

FIG. 3 is an explanatory view of the structure of the entanglement preventing device.

FIG. 4 is an explanatory diagram of an indoor arrangement of the alarm device.

FIG. 5 is an explanatory view of a entanglement preventing device according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Vehicle frame 12 Intrusion prevention frame 13 Entrapment prevention device 14 Spacer 15 Rear pin (horizontal restraint member) 16 Front pin (horizontal restraint member) 17 Hinge 18 Touch sensor 20 Alarm device 22 Side portion 23 Bolt 11A Bracket 13A, 22A Upper plate 13B , 22B Lower plate 13C Back plate 13K Vertical restraint 19A Hook 19B Fastener 20A Lamp 20B Buzzer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60R 19/56 B60R 19/38 B60R 21/34

Claims (5)

(57) [Claims] 1. A vehicle rear entanglement prevention device provided at a rear portion of a truck vehicle, wherein a fixing mechanism attachable to an intrusion prevention frame fixed to a vehicle frame of the truck vehicle, and a fixing mechanism fixed to the fixing mechanism. and a said inrush prevention frame from entrainment extended planar downward prevention unit, the entanglement preventing portion, the bay which is curved outwardly in downward
It has a curved surface, and the lower end of the curved surface protrudes rearward.
A vehicle rear entanglement prevention device characterized in that it is put out . 2. A vertical restraint portion detachably attached to the intrusion prevention frame, holding the intrusion prevention frame inside and vertically restraining the vertically inwardly restraining portion. The vehicle rear entanglement prevention device according to claim 1, further comprising a horizontal restraint member that penetrates and is detachably attached to restrain the rush prevention frame in the front-rear direction. 3. The vertical restraint portion has a U-shaped support member that fixes the entanglement prevention portion and forms a through-hole of the horizontal restraint member; 3. The apparatus according to claim 2, further comprising a spacer member vertically arranged on the frame. 4. The apparatus according to claim 1, wherein the entanglement prevention unit includes a sensor for detecting contact or impact of an object. 5. The entanglement preventing section,To the fixing mechanism
An upper plate fixed and extended downward in a plane, It is attached to the lower edge of the upper plate so as to be pivotable upward,
It is curved and extended downward in a planar manner, with the lower end part facing rearward.
A lower plate that has been protruded, Rotate upward and overlap with the upper plate in a folded state
A lock mechanism that locks the lower plate in a state where The rotation range of the lower plate is limited to prevent rotation forward.
Limit machine to enable And having Characterized by
Preventing a vehicle rear entanglement according to claim 1, 2, 3, or 4.
apparatus.