JP2022186093A - Rear gate structure - Google Patents

Abstract

To provide a rear gate structure which can suppress vibration of a movable part to inhibit deterioration of seal performance.SOLUTION: A rear gate structure 1 is attached to a rear end part of a cargo chamber 3 of a transportation vehicle 2. The rear gate structure 1 includes: a lifting slider 10 which rotatably supports a gate plate 11; lifting means 30 which moves up or down the lifting slider 10; elevation stop means 40 which stops the lifting slider 10 at a predetermined height; and fixing means 50 which fixes the lifting slider 10 stopped at the predetermined height.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear gate structure attached to the rear end of a luggage compartment.

A rear gate of a van-type transport vehicle for transporting automobiles includes a guide rail provided on a rear end frame of the vehicle, a gate slider that moves up and down along the guide rail, and a gate plate that is rotatably provided on the gate slider. (See Patent Document 1, for example). When a car is loaded onto the transport vehicle, the gate plate is laid down, the tip of the gate plate touches the ground, and the car is put on the gate plate. When the transportation vehicle travels, the gate plate is raised and aligned with the gate slider, and the gate slider is lifted to a predetermined height and fixed. A door gasket is provided around the periphery of the gate plate, and by pressing the door gasket against the rear end frame of the vehicle, rainwater or the like is prevented from entering the vehicle.

Japanese Patent No. 4204286

The gate slider is fixed to the rear end frame of the vehicle when the transportation vehicle is running. The gate slider is fixed by a fixing pin that is inserted into the gate slider from the vehicle rear end frame side. Since the conventional gate slider is inserted into a cylindrical guide rail and is difficult to see visually, the pin hole provided in the gate slider has an elongated hole shape. As a result, a gap is generated between the fixed pin and the pin hole, and movable parts such as guide rails and gate plates vibrate during running. As a result, the door gasket provided around the vehicle rear end frame rubs against the vehicle rear end frame and the like and wears out, resulting in a problem of deterioration in sealing performance.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rear gate structure capable of suppressing deterioration of sealing performance by suppressing vibration of a movable portion.

The present invention for solving the above problems is a rear gate structure attached to the rear end portion of the luggage compartment of a transport vehicle. Such a rear gate structure includes an elevating slider that rotatably supports a gate plate, elevating means that elevates the elevating slider, elevation stop means that stops the elevating slider at a predetermined height, and the above-described gate plate that stops at a predetermined height. fixing means for fixing the lifting slider.

According to the rear gate structure of the present invention, since the lifting slider is fixed by the fixing means while it is stopped at a predetermined height by the lifting stop means, it is not necessary to form an elongated hole or the like in the lifting slider. Therefore, since the lifting slider can be fixed without rattling, vibrations of the lifting slider and the gate plate during travel can be suppressed. As a result, wear of the door gasket can be suppressed, and deterioration of sealing performance of the rear gate can be suppressed.

In the rear gate structure of the present invention, the elevating means preferably includes a linear member connected to the elevating slider and the gate plate, and an actuator for pulling out the linear member. With such a configuration, the lifting means has a simple configuration and can be installed on the vehicle rear end frame.

In the rear gate structure of the present invention, the lift stop means has a projecting portion that projects toward the lifting slider and presses the abutment portion of the lifting slider from above, and the projecting portion is movable with respect to the lifting slider. is preferable. According to such a configuration, it is possible to switch ON/OFF of locking of the lifting slider, so that the lifting slider can be raised to a position higher than the predetermined height.

In the rear gate structure of the present invention, a first sensor detects that the lifting slider is fixed by the fixing means, and detects that the gate plate is raised to a predetermined angle with respect to the lifting slider when the gate is closed. and a control device for stopping the lifting means when the gate plate rises to a predetermined angle while the lifting slider is not fixed. According to such a configuration, it is possible to confirm that the fixing means is not operating by stopping the gate plate in the middle of the rotation. In this case, the fixing means can be reliably set by operating the lifting means after operating the fixing means. As a result, the vibration of the lifting slider during travel can be suppressed.

According to the rear gate structure of the present invention, deterioration of sealing performance can be suppressed by suppressing vibration of movable parts such as a lifting slider and a gate plate.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure of the delivery vehicle which installed the rear gate structure which concerns on embodiment of this invention, Comprising: (a) is a side view, (b) is a rear view. FIG. 2 is a side view of the transport vehicle in which the rear gate structure according to the embodiment of the present invention is installed, with the rear gate being opened; FIG. It is a sectional view showing an open state of rear gate structure concerning an embodiment of the present invention. FIG. 10 is a view showing a lift stop means for a lifting slider of a rear gate structure according to an embodiment of the present invention, (a) is an enlarged side view of the lift stop means in an unlocked state, and (b) is a lift stop means in a locked state; is an enlarged side view of the. It is a figure showing the fixing means of the rear gate structure according to the embodiment of the present invention, (a) is an enlarged side view of the fixing means in the unlocked state, and (b) is an enlarged side view of the fixing means in the locked state. . It is the figure which showed the rise stop means, the fixing means, and the switch of the raising/lowering means of the liftgate structure which concerns on embodiment of this invention, (a) is a side view, (b) is a rear view. It is a figure showing the closing process of the rear gate structure according to the embodiment of the present invention, (a) is a side view of a state in which the lifting slider is at the lower end position, (b) is a state in which the lifting slider is at the closed height. It is a side view. FIG. 4A is a side view showing the closing process of the rear gate structure according to the embodiment of the present invention, and FIG. be. FIG. 4A is a side view showing a state in which the lock of the fixing means is released, and FIG. 4B is a side view showing a state in which the gate plate is in a horizontal position. It is a diagram.

A rear gate structure according to an embodiment of the present invention will be described with reference to the attached drawings. In this embodiment, a case where such a rear gate structure is attached to an automobile transport vehicle will be described as an example. In this embodiment, the forward direction of the vehicle is defined as "forward", the backward direction is defined as "rear", the left hand direction of the driver is defined as "left", and the right direction is defined as "right".

As shown in FIGS. 1 and 2, the automobile transport vehicle 2 loads and transports a vehicle 4 such as a four-wheeled motor vehicle in a cargo room 3 . A vehicle rear end frame having a pair of left and right vertical frames 5 , 5 is provided at the rear end of the luggage compartment 3 . After being lifted through the rear gate structure 1, the vehicle 4 is self-propelled and carried into the luggage compartment 3. - 特許庁

As shown in FIG. 3, the liftgate structure 1 according to this embodiment includes a lift slider 10, lift means 30, lift stop means 40, fixing means 50, and control means 60. As shown in FIG.

The elevating slider 10 is a portion that rotatably supports the gate plate 11 and is formed vertically. The elevating slider 10 is inserted in an elevating slider accommodating portion 6 provided in the vertical frame 5 so as to be able to ascend and descend. A pair of up-and-down sliders 10 are provided on the left and right sides, and are arranged in the vertical frames 5 on the left and right sides, respectively. A rearward projecting bracket 12 is provided at the lower end of the lift slider 10 .

The gate plate 11 is a lid member that closes the rear end opening of the luggage compartment 3 . A base end portion 11 a of the gate plate 11 is pin-coupled to a bracket 12 at the lower end portion of the lift slider 10 . The gate plate 11 rotates between a lid state for closing the rear end opening and a loading state for loading the vehicle 4 thereon. The gate plate 11 is placed in a lid state when it stands upright, and is placed in a loaded state when it is laid down horizontally. A slide gate 13 is provided at the tip of the gate plate 11 so as to be retractable. As shown in FIG. 8B, the slide gate 13 is accommodated inside the gate plate 11 when the gate plate 11 is raised. The upper surface of the slide gate 13 is inclined so that it becomes lower toward the tip, and when the gate plate 11 is in a loaded state, it protrudes toward the tip and slides on the road surface.

A slide stay 14 spans between the tip of the gate plate 11 and the intermediate portion of the elevation slider 10 . The slide stay 14 is a member that horizontally holds the gate plate 11 and is formed to be extendable. The slide stay 14 horizontally holds the gate plate 11 in an extended state. The slide stay 14 retracts when the gate plate 11 is raised. When the vehicle 4 is carried in and out, the slide stay 14 is locked in an extended state. When the rear gate structure 1 is closed, the slide stay 14 is extended and locked until the elevating slider 10 rises to a predetermined height. After the lift slider 10 rises to a predetermined height (for example, a height where the top surface of the gate plate 11 in the loaded state is flush with the floor surface of the luggage compartment), the lock is released and the slide stay 14 retracts to open the gate. Rotation of the plate 11 is started.

The lift slider 10 is provided with two guide rollers 15 . The upper guide roller 15 is provided at the upper end of the elevation slider 10 , and the lower guide roller 15 is provided below the elevation slider 10 . A guide rail 7 extending in the vertical direction is provided on the inner peripheral surface of the lifting slider housing portion 6 , and the guide roller 15 rotates along the guide rail 7 to guide the vertical movement of the lifting slider 10 . do.

As also shown in FIG. 4 , a contact portion 16 is formed on the front surface of the lower end portion of the elevation slider 10 to contact the elevation stop means 40 . The abutting portion 16 has an upper end face that abuts on a projecting portion 41 of a rise stopping means 40 to be described later from below. An insertion hole 17 is formed below the contact portion 16 . The insertion hole 17 extends horizontally and has an open front end. A retractable pin 51 of the fixing means 50 is inserted into the insertion hole 17 .

The elevating means 30 is means for elevating the elevating slider 10 . The lifting means 30 is housed in the lifting means housing portion 8 . The lifting means housing portion 8 is provided inside the vertical frame 5 and in front of the lifting slider housing portion 6 . The lifting means 30 includes a linear member 31 and an actuator 32, as shown in FIG. The linear member 31 is composed of, for example, a roller chain, and is connected to the elevation slider 10 , the gate plate 11 and the actuator 32 . One end of the linear member 31 is fixed to the base end portion 11 a of the gate plate 11 , and the other end is fixed to the upper end portion of the lifting means accommodating portion 8 . The linear member 31 is wound around first to fifth sprockets 33a to 33e provided at each portion. The first sprocket 33a is provided at a position separated by a predetermined length from the base end portion 11a of the gate plate 11, and moves the linear member 31 extending from the fixed position of the base end portion of the gate plate 11 to the elevating slider 10. Turn to the side. The second sprocket 33b is provided on the side surface of the lifting slider 10, and changes the direction of the linear member 31 extending from the first sprocket 33a upward. The third sprocket 33c is provided at the upper end of the lifting slider housing portion 6, and changes the direction of the linear member 31 extending from the second sprocket 33b toward the front. The fourth sprocket 33d is provided at the upper end of the lifting means accommodating portion 8, and changes the direction of the linear member 31 extending from the third sprocket 33c downward. The fifth sprocket 33e is composed of a movable pulley provided at the tip of the actuator 32, and moves up and down as the actuator 32 expands and contracts. The fifth sprocket 33e turns the linear member 31 extending from the fourth sprocket 33 upward toward the fixed position.

The actuator 32 is arranged in the lifting means accommodating portion 8 . The actuator 32 extends vertically, and a piston rod 34 protruding upward from a cylinder advances and retreats vertically. A fifth sprocket 33e is rotatably fixed to the tip of the piston rod 34. As shown in FIG. According to the lifting means 30 having such a configuration, by retracting the actuator 32, the fifth sprocket 33e is lowered and the linear member 31 is hoisted. The actuator 32 is operated by an operation button (not shown) provided at the rear end of the luggage compartment 3 . Specifically, when the upper button is pressed, the actuator 32 retracts, and when the lower button is pressed, the actuator 32 extends.

As shown in FIGS. 4 to 6, the lift stop means 40 is a device for stopping the lift slider 10 at a predetermined height. The ascending stop means 40 is arranged in front of the ascending/descending slider 10 inside the ascending/descending means accommodating portion 8 . The rising stop means 40 has an overhanging portion 41 and a lock handle 43 . The projecting portion 41 is a portion that protrudes toward the lifting slider 10 and presses the contact portion 16 of the rising lifting slider 10 from above. Further upward movement of the elevation slider 10 is prevented by pressing the contact portion 16 from above by the projecting portion 41 . The height at which the elevation slider 10 is prevented from rising is the height at which the gate plate 11 can close the gate when the gate plate 11 is raised. In this embodiment, the lift slider 10 stops rising when the upper surface of the base end of the gate plate 11 projecting rearward is at the same height as the floor surface of the luggage compartment 3 . The projecting portion 41 can appear and retract with respect to the elevation slider 10 . Specifically, the proximal end portion of the projecting portion 41 is fixed to a rotatable pin 44, so that the projecting portion 41 is rotatable. When the protruding portion 41 becomes horizontal, the rear end portion of the protruding portion 41 protrudes rearward and protrudes to the passage position of the contact portion 16 (see (b) of FIG. 4). When the protruding portion 41 inclines obliquely downward to the rear, the rear end portion of the protruding portion 41 is retracted forward and deviates forward from the passage position of the contact portion 16 (see FIG. 4(a)).

As shown in (b) of FIG. 6 , the projecting portions 41 are arranged in front of the left and right elevation sliders 10 . The left and right pins 44, 44 to which the left and right projecting portions 41 are respectively fixed are integrally connected via a connecting rod 45 so as to rotate synchronously.

The lock handle 43 is a handle that is gripped when rotating the projecting portion 41, and is fixed to the tip of one projecting portion 41 (the left projecting portion 41 in this embodiment). The lock handle 43 is inclined with respect to the overhanging portion 41, and when the overhanging portion 41 is inclined backward and obliquely downward, the lock handle 43 becomes horizontal ((a) in FIG. 4 and ((a) in FIG. 6). a) see). When the horizontal lock handle 43 is pulled down obliquely, the projecting portion 41 rotates and becomes horizontal (see FIG. 4(b)). In this embodiment, when the lock handle 43 arranged on the left side is operated, the left and right projecting portions 41, 41 rotate synchronously.

The fixing means 50 is a device for fixing the elevating slider 10 at a predetermined height, as shown in FIG. The fixing means 50 holds the lifting slider 10 in a state in which the lifting of the lifting slider 10 is prevented by the lifting stopping means 40 (a state in which the abutment portion 16 of the lifting slider 10 abuts the projecting portion 41 of the lifting stopping means 40). Lock vertical movement. The fixing means 50 has a retractable pin 51 and an operating handle 52 . The retractable pin 51 is inserted from the front into an insertion hole 17 formed in front of the elevation slider 10, and by being inserted into the insertion hole 17, the elevation slider 10 is fixed and restricted from moving in the vertical direction. The retractable pin 51 is supported by a guide portion 53 extending in the front-rear direction so as to be movable in the front-rear direction. The retractable pin 51 and the guide portion 53 are arranged in front of the left and right lifting sliders 10, respectively.

The operating handle 52 is a member for retracting the retractable pin 51 and includes a grip portion 54 and a connecting portion 55 . The grip portion 54 and the connecting portion 55 are integrated. A connecting portion between the grasping portion 54 and the connecting portion 55 is fixed to a rotatable pin 56 so that the operating handle 52 can be rotated. The grip portion 54 is a portion for rotating the operation handle 52 and extends downward. The connecting portion 55 is a portion that pushes and pulls the retractable pin 51 forward and backward, and is connected to the base end portion of the retractable pin 51 on the front end side. As shown in FIG. 4, when the grip portion 54 is tilted rearward, the connecting portion 55 moves forward and the retractable pin 51 retracts forward. As shown in FIG. 5, when the grip portion 54 rotates forward and becomes vertical, the connecting portion 55 moves rearward and the retractable pin 51 protrudes rearward. Then, the tip of the projecting/retracting pin 51 is inserted into the insertion hole 17, and the lifting slider 10 is fixed.

As shown in FIG. 6, the grip portion 54 is provided only on the left operating handle 52, and only the connecting portion 55 is provided on the right operating handle 52R. The proximal end portion of the right connecting portion 55 is fixed to a rotatable pin 56 and is rotatable. The left and right pins 56, 56 are coaxially arranged and integrally connected via a connecting rod 57 so as to rotate synchronously. As a result, when the left gripping portion 54 is moved, the left and right connecting portions 55 are interlocked, and the left and right protruding/retracting pins 51 are synchronously protruded.

The control means 60 is a device that stops the lifting means 30 when the gate plate 11 is about to rise while the fixing means 50 is in a non-operating state (a state in which the vertical movement of the lifting slider 10 is not locked). When the gate plate 11 rises at a predetermined angle or more, a force acts to lift the lift slider 10 upward. closed position. The control means 60 is for preventing this. As shown in FIGS. 4 and 5, the control means 60 comprises a first sensor 61, a second sensor 62 and a control device (not shown).

The first sensor 61 detects that the fixing means 50 has fixed the lifting slider 10 . The first sensor 61 is composed of a limit switch, and a hinge lever 63 is arranged in a rotation area of a pressing lever 63 a provided on the operation handle 52 . When the operation handle 52 is rotated so as to project the retractable pin 51 backward, the pressing lever 63a rotated together pushes the hinge lever 63 of the limit switch backward, thereby pushing the plunger (not shown). The fixing means 50 detects that it has been actuated.

The second sensor 62 detects that the gate plate 11 has been raised to a predetermined angle (30° in this embodiment) with respect to the elevation slider 10 . The second sensor 62 is composed of a limit switch, and a hinge lever 64 is arranged in a rotation area of a pressing lever 64a provided at the base end portion 11a of the gate plate 11. As shown in FIG. When the gate plate 11 rises to a predetermined angle, the pushing lever 64a rotated together pushes the hinge lever 64, pushing a plunger (not shown). Thereby, it is detected that the gate plate 11 has risen to a predetermined angle.

The controller stops the lifting means 30 when the gate plate 11 rises to a predetermined angle while the lifting slider 10 is not fixed by the fixing means 50 . The controller is electrically connected to the first sensor 61 , the second sensor 62 and the actuator 32 . When the operator presses the upper button to retract the actuator 32, the control device detects the rise of the gate plate 11 while the first sensor 61 does not detect the operation of the fixing means 50, The actuator 32 is automatically stopped.

Next, a work process for closing the gate of the rear gate structure 1 having the above configuration of the present embodiment will be described. In the state before the gate is closed (the state in which the vehicle is carried in and out), as shown in FIG. The gate plate 11 is horizontally held by being extended and locked. In this state, the elevating slider 10 can be raised and lowered, and can be raised above a predetermined height when the gate is closed.

When closing the gate, first, in the state shown in FIG. 7(a) (both the lifting stop means 40 and the fixing means 50 are in the OFF state, the slide stay 14 is extended and locked, and the gate plate 11 is held horizontally. ), the operator pulls down the horizontal lock handle 43 obliquely downward to project the overhanging portion 41 rearward, thereby turning on the rise stop means 40 . Then, the upper button is pushed, the actuator 32 of the lifting means 30 is retracted, and the linear member 31 is wound up. As a result, the lift slider 10 is pulled up while the gate plate 11 remains horizontal.

As shown in (b) of FIG. 7, when the lift slider 10 rises to a predetermined height, the contact portion 16 abuts the projecting portion 41 and the lift slider 10 stops rising. Here, the operator releases the upper button to stop the lifting means 30 . In this state, the insertion hole 17 and the retractable pin 51 are exactly at the same height. Then, the grasping portion 54 of the operating handle 52 is rotated to be vertical, and the retractable pin 51 is projected rearward. Then, the tip of the projecting/retracting pin 51 is inserted into the insertion hole 17, and the lifting slider 10 is fixed. At this time, the first sensor 61 detects the protrusion of the retractable pin 51 and detects the operation of the fixing means 50 . After that, the slide gate 13 is pushed into the gate plate 11 and the lock of the slide stay 14 is released. Then, the upper button is pushed, the actuator 32 of the lifting means 30 is retracted, and the linear member 31 is wound up.

As a result, the gate plate 11 begins to rotate as shown in FIG. 8(a). As the gate plate 11 rotates, the slide stay 14 retracts. When the gate plate 11 rises to 30°, the second sensor 62 detects the rising of the gate plate 11 . Here, if the retractable pin 51 is not projected and the first sensor 61 does not detect the operation of the fixing means 50, the lifting means 30 is automatically stopped by the control device. When the rotation of the gate plate 11 is stopped in this way, the operator rotates the grip portion 54 of the operation handle 52 so that it is vertical, and after projecting the retractable pin 51 rearward, presses the upper button. By pushing, the linear member 31 is wound up, and the rotation of the gate plate 11 is restarted.

As shown in FIG. 8(b), when the gate plate 11 rises vertically and the gate closes, the operator releases the upper button to lock the gate lock (not shown) to complete the work.

Next, a working process for opening the gate of the rear gate structure 1 having the above configuration of the present embodiment will be described. When opening the gate, first, the operator unlocks the gate from the closed state of FIG. Then, as shown in (b) of FIG. 9, the actuator 32 of the lifting means 30 is extended, the linear member 31 is lowered, and the gate plate 11 is rotated backward and opened. Along with this, the slide stay 14 extends. When the gate plate 11 becomes horizontal, the slide stay 14 is fully extended and locked. Here, slide gate 13 is pulled out from gate plate 11 . After that, the grasping portion 54 of the operating handle 52 is rotated backward to retract the retractable pin 51 forward. Then, the tip of the projecting/withdrawing pin 51 is pulled out from the insertion hole 17, and the lifting slider 10 is released from the fixation. Further, the lift slider 10 is lowered, the lock handle 43 is pulled up obliquely to be horizontal, the overhanging portion 41 is moved forward, and the lift stop means 40 is turned off. As a result, the elevating slider 10 can be moved up and down to a position higher than the closed position, so that work such as loading and unloading of the vehicle can be performed.

According to the rear gate structure 1 according to the present embodiment, the retractable pin 51 of the fixing means 50 is inserted into the insertion hole 17 of the lifting slider 10 while the lifting slider 10 is stopped at a predetermined height by the lifting stop means 40. It is not necessary to form the insertion hole into an elongated shape as in the conventional art. Therefore, since the lifting slider 10 and the gate plate 11 can be fixed without rattling, the vibration of the lifting slider 10 and the gate plate 11 during traveling can be suppressed. As a result, wear of the door gasket provided around the rear end frame of the vehicle can be suppressed, and deterioration of sealing performance of the rear gate can be suppressed.

Since the rising stop means 40 is provided with an overhanging portion 41 that presses the contact portion 16 of the lifting slider 10 from above so that it can protrude from the lifting slider 10, it is possible to easily switch ON/OFF of stopping the lifting of the lifting slider 10. be done. When the lift stop is turned off, the lift slider 10 can be lifted to a position higher than the predetermined height.

Further, the lifting means 30 includes a linear member 31 and an actuator 32, and the linear member 31 is wound around the sprockets 33a to 33e. can do. Further, the lift means 30 can lift and lower the lift slider 10 and rotate the gate plate 11 together.

Furthermore, in this embodiment, the control device of the control means 60 automatically stops the lifting means 30 when the gate plate 11 rises to a predetermined angle with the lifting slider 10 not fixed. A worker who visually observes that is stopped in the middle of rotation can confirm that the fixing means 50 is not operating. In this case, by operating the lifting means 30 again after operating the fixing means 50, the fixing means 50 can be reliably set. As a result, the vibration of the lifting slider 10 during travel can be suppressed, thereby further suppressing wear of the door gasket. Further, since the fixing means 50 is provided with the first sensor 61 for detecting that the lifting slider 10 is fixed, even if the lifting slider 10 is accommodated inside the vertical frame 5, the lifting slider 10 is not fixed. It can detect whether there is

Although the embodiments for carrying out the present invention have been described above, the present invention is not intended to be limited to the above-described embodiments, and design changes can be made as appropriate without departing from the spirit of the present invention. For example, in the above-described embodiment, the vehicle 4 is directly loaded on the floor surface of the luggage compartment 3, but the present invention is not limited to this. The floor of the luggage compartment 3 may be of a double-floor structure, with the vehicle 4 loaded on the upper floor surface and small luggage loaded on the lower floor surface. In this case, the lift slider 10 is lifted until the gate plate 11 reaches the height of the upper floor surface while the lift stop means 40 is turned off.

Although the rear gate structure 1 is provided in the van-type vehicle in the above embodiment, it is not limited to this. Of course, the rear gate structure 1 can also be applied to other vehicles such as wing vehicles.

1 rear gate structure 2 car transport vehicle (transport vehicle)
3 Luggage compartment 4 Vehicle 10 Lifting slider 11 Gate plate 16 Contact part 17 Insertion hole 30 Lifting means 31 Linear member 32 Actuator 40 Lifting stop means 41 Overhanging part 43 Lock handle 50 Fixing means 51 Protrusion pin 60 Control means 61 First sensor 62 second sensor

Claims (4)

In the rear gate structure attached to the rear end of the luggage compartment of the transport vehicle,
An elevating slider for rotatably supporting a gate plate, elevating means for elevating the elevating slider, elevation stopping means for stopping the elevating slider at a predetermined height, and fixing the elevating slider stopped at a predetermined height. and fixing means. 2. The rear gate structure according to claim 1, wherein said elevating means comprises a linear member connected to said elevating slider and said gate plate, and an actuator for pulling out said linear member. The elevation stop means includes an overhanging portion that projects toward the elevation slider and presses the contact portion of the elevation slider from above,
3. The rear gate structure according to claim 1, wherein the projecting portion is retractable with respect to the elevating slider. a first sensor for detecting that the fixing means has fixed the lifting slider; a second sensor for detecting that the gate plate has been raised to a predetermined angle with respect to the lifting slider when the gate is closed; 4. The apparatus according to any one of claims 1 to 3, further comprising a control device for stopping said lifting means when said gate plate rises to a predetermined angle while said lifting slider is not fixed. The rear gate structure described in the paragraph.

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