JP6984070B2 - Door opening / closing device for specially equipped vehicles - Google Patents

Description

The present invention relates to a door opening / closing device for a specially equipped vehicle equipped with a loading platform so that cargo can be loaded inside.

Logistics transportation using freight vehicles is in charge of most of the logistics transportation, and most freight vehicles have an open loading platform. In recent years, due to the high-grade, refined, and high-value-added goods, the problem that the commercial value of the product is deteriorated due to the impact from the outside during the transportation of the cargo, the problem of theft during transportation, and the outside. Various configurations of lid devices have been proposed that can keep the cargo bed in a sealed state so as to prevent damage to the product due to the environment, prevention of falling during transportation, and the like.

As a typical example, a wing body is provided, and the wing body (WING BODY) opens a side door like a large bird wing to load and unload, and has excellent work efficiency and convenience. It is a device with operation and excellent loading capacity.

As a prior art, according to the Republic of Korea Registered Patent Gazette, Registration No. 10-0718580 (upper open wing body truck), the upper open wing body truck has a base cover height according to the height of the load. The load can be easily transferred by adjusting the height, and the upper part of the base cover can be opened and closed according to the weather and other conditions to prevent unnecessary waste of power due to height adjustment. Regarding the open wing body truck, the upper open wing body truck surrounds a base frame connected to the upper part of the vehicle frame and the upper part of the base frame, and is flowed up and down by height adjusting means. In a wing body truck consisting of a base cover and a square frame-shaped body frame whose front and rear surfaces are closed, one side of the base cover is hinged to the side surface of the body frame and is rotated by a first hydraulic cylinder. It is composed of a wing body that is moved and an opening / closing cover that opens and closes the upper part of the body frame while being rotated by a rotation control member on the upper part of the body frame, and the height adjusting means is the body frame. A large number of binding rods formed at the corners having a certain length in the downward direction, and a fixing inserted inside the binding rods and formed at a constant height at the corners of the base frame. It is composed of a rod and a large number of second hydraulic cylinders whose one side is fixed to the base frame and the other side is fixed to the body frame. The second hydraulic cylinder causes the base cover to flow up and down. However, the ones whose height is variable are described.

As another conventional technique, according to the Republic of Korea Registered Patent Gazette, Registration No. 10-0589900 (wing body carrier), the wing body carrier is integrated with the bottom surface and has fixed walls on the front and rear surfaces. In order to open and close the wing door in the loading platform of the wing body in which a frame connecting the upper center of the fixed wall body located on the front surface and the rear surface is configured and a wing door rotatably hinged to the frame is configured. A drive motor and a worm gear are installed on a fixed wall on the front surface, one end of a short link is fixedly installed on one side of the worm wheel of the worm gear, and a length is attached to the bottom surface of the wing door. One end of the long link is rotatably installed within a certain range via a bracket, and the two links are rotatably interconnected by pin coupling or the like to drive the drive motor and the worm wheel. It is described that the short link rotates by rotation, and the long link is operated by the principle of a crank lever device that reciprocates to open and close the wing door.

However, in the conventional specially equipped vehicle, it is inconvenient to open and close the side door or the rear door, and there is no sensing function depending on the open state of the side door or the rear door of the loading platform. It was difficult to recognize, and it was often operated with the rear door open, which had the disadvantage of increasing the risk of vehicle accidents.

The present invention has been made to solve the above-mentioned problems, it is easy to open and close the side door or the rear door of the specially equipped vehicle, and the contact sensor is used to open the side door or the rear door. It provides a door opening / closing device for a specially equipped vehicle that enables the driver to accurately recognize the closed state and perform safe operation.

INDUSTRIAL APPLICABILITY The present invention is a door opening / closing device for a specially equipped vehicle equipped with a loading platform so that cargo can be loaded inside. The length of the upper fuselage is composed of an upper fuselage in which one end of both ends of the lower fuselage located on the far side from the side door is hinged and rotates about the first hinge axis. The lower fuselage is formed longer than the length of the lower fuselage, and the upper locking means and the lower locking means are attached to the respective surfaces of the lower fuselage and the upper fuselage facing each other during rotation, respectively. When the fuselage rotates in the direction of the lower fuselage, the upper locking means mounted on the upper surface of the upper fuselage and the lower locking means of the lower fuselage are fastened to each other, and the end of the upper fuselage protruding further from the lower fuselage. However, it is characterized by pressing a hinged side door against the loading platform.

Therefore, the door opening / closing device for the specially equipped vehicle according to the present invention can easily open / close the side door or the rear door of the specially equipped vehicle, and the driver can use the contact sensor to determine the open state and the closed state of the side door or the rear door. Has the remarkable effect of being able to accurately recognize and operate safely.

It is a schematic diagram which shows the conventional specially equipped vehicle. It is a perspective photograph which shows the state before tightening of the door opening and closing device of the specially equipped vehicle which concerns on this invention. It is a plane photograph which shows the state before tightening of the door opening and closing device of the specially equipped vehicle which concerns on this invention. It is a perspective photograph which shows the tightening state of the door opening / closing device of the specially equipped vehicle which concerns on this invention. It is a perspective photograph which shows the upper body of the door opening / closing device of the specially equipped vehicle which concerns on this invention. It is a plane photograph which shows the upper body of the door opening / closing device of the specially equipped vehicle which concerns on this invention. It is a partially enlarged perspective photograph which shows the upper body of the door opening / closing device of the specially equipped vehicle which concerns on this invention. It is a perspective photograph which shows the lower body of the door opening / closing device of the specially equipped vehicle which concerns on this invention. It is a perspective photograph which shows the lower body of the door opening / closing device of the specially equipped vehicle which concerns on this invention. It is a side photograph which shows the tightening process of the door opening / closing device of the specially equipped vehicle which concerns on this invention. It is a side photograph which shows the tightening process of the door opening / closing device of the specially equipped vehicle which concerns on this invention. It is a photograph which shows the use state of the door opening / closing device of the specially equipped vehicle which concerns on this invention. It is a photograph which shows the use state of the door opening / closing device of the specially equipped vehicle which concerns on this invention. It is a block diagram which shows the sensing system which confirms the open and closed state of the door attached to the specially equipped vehicle which concerns on this invention.

In the door opening / closing device of the specially equipped vehicle equipped with the loading platform 11 so that cargo can be loaded inside, the opening / closing device 100 is fixedly attached to the loading platform 11 of the specially equipped vehicle 10 in the direction of the side door 12. The lower fuselage 120 and one end of both ends of the lower fuselage 120 located on the far side from the side door 12 are hinged to form an upper fuselage 110 that rotates about the first hinge shaft 130. The upper body 110 is formed to be longer than the length of the lower body 120, and the upper locking means 140 and the lower part are on the respective surfaces where the lower body 120 and the upper body 110 face each other during rotation, respectively. When the locking means 150 is attached and the upper body 110 rotates in the direction of the lower body 120, the upper locking means 140 mounted on the upper surface of the upper body 110 and the lower locking means 150 of the lower body 120 are mounted. Are fastened to each other, and the end portion of the upper body 110 protruding further from the lower body 120 presses the hinged door type side door 12 against the loading platform 11.

The lower locking means 150 includes a bracket 152 having one end protruding from the upper surface of the lower body 120 and a locking claw 151 hinged to the bracket 152 so as to rotate in the direction of the first hinge shaft 130. The upper locking means 140 is composed of a second spring 154 that supports the locking claw 151 so as to return to the original position when the locking claw 151 is rotated by an external force, and the upper locking means 140 is an upper portion. When the fuselage 110 rotates and comes into contact with the lower fuselage 120, it is formed long in the length direction of the upper fuselage 110 so that the bracket 152 protruding from the upper surface of the lower fuselage 120 and the locking claw 151 penetrate. A casing in which an internal space is formed so that when the elongated hole 146 and the upper fuselage 110 rotate and come into contact with the lower fuselage 120, the bracket 152 and the locking claw 151 penetrating the elongated hole 146 are located inside. 141, a guide hole 142 formed long in the length direction of the upper fuselage 110 on both side surfaces of the casing 141, a sliding bar 144 having both ends penetrating the guide hole 142, and a casing parallel to the sliding bar 144. The upper fuselage 110 is composed of a fixing bar 143 having both ends fixed to the inner side surface of 141 and a first spring 145 having both ends tightened between the sliding bar 144 and the fixing bar 143. When the first hinge shaft 130 is rotated with reference to the upper surface of the lower body 120 and brought into contact with the upper surface of the lower body 120, the locking claw 151 formed on the upper surface of the lower body 120 is fastened to the sliding bar 144.

Further, the fixed bar 143 is characterized in that it is located at a distance farther from the first hinge shaft 130 as compared with the sliding bar 144.

Further, the locking claw 151 is long in the length direction of the lower body 120 and is in contact with the upper surface of the lower body 120, and the first straight line portion 151-1 is in contact with the upper surface of the lower body 120. Of the portions, an inclined portion 151-2 is formed so as to be inclined upward at an end portion close to the first hinge shaft 130, and a first straight line portion 151- is formed at the end portion of the inclined portion 151-2. A second straight line portion 151-3 is formed in parallel with 1, and a hook shape is formed at both ends of the first straight line portion 151-1 located at a distance far from the first hinge shaft 130. The locking portion 151-2 of the above is extended so as to form an opening 151-5 toward the first hinge shaft 130, but the first straight line portion 151-1 and the locking portion 151-2 are formed. The second hinge shaft 153 is hinged to the bracket 152 at the connecting portion of the above.

Further, the elongated holes 146 formed on both side surfaces of the casing 141 are characterized in that they are formed so as to be inclined upward toward the first hinge shaft 130.

Further, a sensor 160 for detecting contact with the upper body 110 is mounted on the upper surface of the lower body 120 located between the first hinge shaft 130 and the locking claw 151, and the upper body 110 is mounted. When it rotates and comes into contact with the lower body 120, it also comes into contact with the sensor 160.

Further, the handle 170 is long attached to the end of the upper body 120 in the length direction of the upper body 120.

Hereinafter, the door opening / closing device for the specially equipped vehicle according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic diagram showing a conventional specially equipped vehicle.

As shown in FIG. 1, the wing body truck or the specially equipped vehicle 10 is a truck on which a loading platform 11 is mounted, and the loading platform 11 loads cargo inside by a side door 12 installed on the side surface so as to be openable and closable. It is a general configuration to be able to do.

Here, in the present invention, as described later, in a state where the side door 12 or the rear door 13 of the loading platform 11 is open, if the driver steps on the brake pedal 370 to start the engine, the side door 12 or the rear surface It is characterized in that an alarm sound is generated so as to recognize that the door 13 is in an open state.

FIG. 2 is a perspective photograph of the door opening / closing device of the specially equipped vehicle according to the present invention before tightening, and FIG. 3 is a plan view of the door opening / closing device of the specially equipped vehicle according to the present invention before tightening. Is a perspective photograph of the door opening / closing device of the specially equipped vehicle according to the present invention in a tightened state, FIG. 5 is a perspective photograph showing the upper body of the door opening / closing device of the specially equipped vehicle according to the present invention, and FIG. FIG. 7 is a plan view showing the upper body of the door opening / closing device of the specially equipped vehicle according to the present invention, FIG. 7 is a partially enlarged perspective photograph of the upper body of the door opening / closing device of the specially equipped vehicle according to the present invention, and FIGS. 10 is a perspective photograph showing the lower body of the door opening / closing device of the specially equipped vehicle according to the present invention, and FIGS. 10 and 11 are side photographs showing a tightening process of the door opening / closing device of the specially equipped vehicle according to the present invention. 13 is a photograph showing the usage state of the door opening / closing device of the specially equipped vehicle according to the present invention.

As shown in FIGS. 2 to 13, the door opening / closing device 100 of the specially equipped vehicle according to the present invention has a lower body 120 having one end fixedly mounted on the loading platform 11 of the specially equipped vehicle 10 in the direction of the side door 12, and the lower body 120. One end of the two ends of the door 12 located on the far side from the side door 12 is hinged to the upper body 110 and rotates around the first hinge shaft 130.

The lower body 120 is formed with a plurality of through holes 121 so that the lower body 120 can be mounted on the loading platform 100.

The length of the upper body 110 is formed to be longer than the length of the lower body 120, and the upper locking means 140 and the lower engagement are provided on the respective surfaces of the lower body 120 and the upper body 110 facing each other during rotation, respectively. The stopping means 150 is attached.

Here, when the upper body 110 rotates in the direction of the lower body 120, the upper locking means 140 mounted on the upper surface of the upper body 110 and the lower locking means 150 of the lower body 120 are fastened to each other, and the lower part is tightened. The side door 12 is fixed to the loading platform 11 by pressing the hinged door type side door 12 against the loading platform 11 at the end of the upper fuselage 110 that further protrudes from the fuselage 120.

In particular, the lower locking means 150 has a bracket 152 having one end protruding from the upper surface of the lower body 120 and a locking claw hinged to the bracket 152 so as to rotate in the direction of the first hinge shaft 130. It is composed of 151 and a second spring 154 that supports the locking claw 151 so as to return to the original position when the locking claw 151 is rotated by an external force.

Further, when the upper body 110 rotates and comes into contact with the lower body 120, the upper locking means 150 has an upper portion so that the bracket 152 and the locking claw 151 projecting from the upper surface of the lower body 120 penetrate. A long hole 146 formed long in the length direction of the body 110, and a bracket 152 and a locking claw 151 penetrating the long hole 146 when the upper body 110 rotates and comes into contact with the lower body 120 are inside. A casing 141 having an internal space formed so as to be located, a guide hole 142 formed long in the length direction of the upper fuselage 110 on both side surfaces of the casing 141, and a sliding bar having both ends penetrating the guide hole 142. 144, a fixed bar 143 with both ends fixed to the inner side surface of the casing 141 parallel to the sliding bar 144, and a first spring 145 with both ends tightened between the sliding bar 144 and the fixed bar 143. It is composed of.

Here, if the upper body 110 is rotated with respect to the first hinge shaft 130 and brought into contact with the upper surface of the lower body 120, the locking claws 151 formed on the upper surface of the lower body 120 will be the sliding bar 144. Will be tightened.

On the other hand, the fixed bar 143 is characterized in that it is located at a distance farther from the first hinge shaft 130 as compared with the sliding bar 144.

Further, the locking claw 151 is long in the length direction of the lower body 120 and is in contact with the upper surface of the lower body 120, and the first straight line portion 151-1 is in contact with the upper surface of the lower body 120. Of the portions, an inclined portion 151-2 is formed so as to be inclined upward at an end portion close to the first hinge shaft 130, and a first straight line portion 151- is formed at the end portion of the inclined portion 151-2. A second straight line portion 151-3 is formed in parallel with 1, and a hook shape is formed at both ends of the first straight line portion 151-1 located at a distance far from the first hinge shaft 130. The locking portion 151-4 of the above is extended so as to form an opening 151-5 toward the first hinge shaft 130.

A second hinge shaft 153 is hinged to the bracket 152 at the connecting portion between the first straight line portion 151-1 and the locking portion 151-4.

Therefore, if the handle 170 is taken and the upper body 110 is rotated around the first hinge shaft 130 to the lower body 120, the bracket 152 and the locking claw 151 protruding from the upper surface of the lower body 120 will be on the upper side. It penetrates the elongated hole 146 formed in the fuselage 110 and is located inside the casing 141.

Further, when the upper body 110 comes closer to the lower body 120, the sliding bar 144 mounted inside the casing 110 comes into contact with the upper surface of the locking portion 151-4 of the locking claw 151.

Since the locking portion 151-4 is formed in the shape of a hook, the body of the sliding bar 144 remains in contact with the upper surface of the locking portion 151-4 as the upper body 110 approaches the lower body 120. The upper fuselage 110 and the lower fuselage 120 are fastened to each other so as to be located inside the locking portion 151-4 from the opening 151-5 of the stop portion 151-4.

Both ends of the sliding bar 144 project outward by guide holes 142 formed on both side surfaces of the casing 141, and the sliding bar 144 can smoothly move along the guide holes 142, and the locking claws 151 can be moved smoothly. Since the rear surface of the locking portion 151-4 is supported in the direction of the first hinge shaft 130 by the second spring 154, the first straight portion 151-1 of the locking claw 151 always applies a force from the outside. Unless added, it will attempt to contact the upper surface of the lower body 120.

That is, the upper body 110 and the lower body 120 are firmly fastened to each other while the sliding bar 144 is located inside the locking portion 151-4 of the locking claw 151.

The second spring 154 uses a torsion spring.

At this time, one end of the first spring 145 is fixed to the fixed bar 143 and the other end is fixed to the sliding bar 144. Therefore, when the sliding bar 144 moves, the length of the first spring 145 naturally increases. Become.

Further, even if the upper fuselage 110 is to be rotated away from the lower fuselage 120, the sliding bar 144 is located inside the hook-shaped locking portion 151-4, and the rear surface of the locking portion 151-4 is formed. Being supported by the second spring 154, the upper fuselage 110 attempts to remain clamped to the lower fuselage 120.

At this time, when the second straight portion 151-3 of the locking claw 151 is picked up with one hand and turned upward with the second hinge shaft 153 as the center, the locking portion 151-4 of the locking claw 151 is turned upward together. The sliding bar 144 located inside the hook-shaped locking portion 151-4 with the opening 151-5 in the direction of the lower fuselage facing upward is fixed to the first spring 145, so that the first spring 145 While returning to the original state, the sliding bar 144 also moves to the outside of the locking portion 151-4, and when the handle 170 is taken by another hand and the upper body 110 is rotated, the upper body 110 is changed. , Will easily rotate.

Since the elongated holes 146 formed on both side surfaces of the casing 141 are formed so as to be inclined upward toward the first hinge shaft 130, the sliding bar 144 is smoothly slid.

Further, a sensor 160 for detecting contact with the upper body 110 is mounted on the upper surface of the lower body 120 located between the first hinge shaft 130 and the locking claw 151, and the upper body 120 is mounted on the upper surface. If it rotates and touches the lower fuselage 120, it also touches the sensor 160 so that the driver can recognize whether the side door 12 or the rear door 13 is correctly closed. Become.

The process of recognition by the driver by the sensor 160 will be described later.

Further, a handle 170 is attached to the end of the upper body 120 for a long time in the length direction of the upper body 120 to facilitate gripping of the opening / closing device 100, and the handle 170 presses the side door 12. It also plays a role.

FIG. 14 is a configuration diagram showing a sensing system for confirming the open and closed states of the door mounted on the specially equipped vehicle according to the present invention.

As the sensor 160, it is preferable to use a contact sensor that detects whether the side door 12 and the rear door 13 are in contact with the loading platform 11 of the vehicle when the side door 12 and the rear door 13 are closed.

In particular, when neither the side door 12 nor the rear door 13 is closed, the engine is prevented from starting.

On the other hand, if the side door 12 or the rear door 13 of the loading platform 12 is opened and the engine is stopped during the operation of the specially equipped vehicle 10, there is a risk of an accident. The person parked the vehicle in a safe place and inspected it.

More specifically, the method for notifying the open and closed state of the door of the specially equipped vehicle according to the present invention is described. The notification system 300 for the open and closed state of the door of the specially equipped vehicle according to the present invention is generated when the brake pedal 370 is depressed. The MPU (micro-passing unit) 310 that senses and controls the pressure and the closed state of the side door 12 and the rear door 13, and the power supply of the vehicle battery 340 to drive the MPU 310 to a voltage suitable for the MPU 310. It consists of a power supply unit 320 to be converted and an alarm device 330 that generates a warning sound when a signal is transmitted from the MPU 310. The side door 12 and the rear door 13 have a side door 12 and a rear door 13, respectively. It is characterized in that a sensing sensor 360 for detecting the closed state of the door is attached.

That is, the sensing sensor 360 uses the contact sensor to detect whether the side door 12 or the rear door 13 is in continuous contact with the loading platform.

On the other hand, among the sensing sensors 360, the sensing sensor mounted on the side door 12 is referred to as drawing reference numeral 361, and the sensing sensor mounted on the rear door 13 is referred to as drawing reference numeral 362.

Here, a signal from the sensing sensors 361 and 362 that senses that the side door 12 and the rear door 13 have been opened is transmitted to the MPU 310, and the driver starts the engine with the start button 350 to operate the vehicle. As a preliminary step, when pressure is applied to the brake pedal 370 by the driver, a signal is transmitted from the MPU 310 to the alarm 330, a warning sound is generated, and the side door 12 or the rear door 13 is opened to the driver. Make them aware that they are doing so that the engine will not start.

That is, since the engine starts with the brake pedal 370 depressed, the engine will not start if it is recognized that the side door 12 or the rear door 13 is open while the brake pedal 370 is depressed.

Further, when the side door 12 or the rear door 13 is opened by an external impact while the specially equipped vehicle 10 is in operation and the brake pedal 370 is not depressed, the MPU 310 transmitted a signal from the sensing sensors 361 and 362. By sounding a warning sound from the alarm 330 and preventing the engine from stopping, it is possible to prevent a larger accident from occurring.

As a reference, the MPU 310 is a computer CPU (central processing unit) converted into an LSI (Large Scale Integration), and includes a register, an arithmetic circuit, and a control circuit to execute arithmetic and control operations. It is preferable to use a low power MPU so that it is driven by the battery power of the vehicle.

Further, since the battery 340 of the vehicle is generally 12V, the power supply unit 320 plays a role of converting to a power supply necessary for driving the MPU 310, and generally, for driving the MPU 310, it is 3.3V. Voltage is required.

On the other hand, the alarm sound of the alarm device 330 can be released as a remote key of the vehicle.

More specifically, an alarm sound is generated (a state in which the brake pedal is depressed) when the side door 12 or the rear door 13 is open, and no alarm sound is generated when the side door 12 or the rear door 13 is closed.

That is, when the brake pedal 370 is stepped on in the open state of the side door 12 or the rear door 13, an alarm sound is generated, and when the external force on which the brake pedal 370 is stepped on is released, the alarm sound is stopped in the middle of the operation. To.

The alarm sound of such an alarm device 330 also plays a role of preventing theft, and the contact state of the sensing sensor 360 is released without normally using the key in the locked state of the side door 12 or the rear door 13. For example, an alarm sound is generated.

In addition, as an anti-theft function, after locking the door with the remote key, the function is activated (the direction indicator light is turned on once) -when the side door or the rear door is unlocked, an alarm sound is generated.

When unlocking the door with the remote key, the function is released (the turn signal lights are lit twice) -No alarm sounds when unlocking the side door or the rear door.

That is, if the rear door is locked with the remote key, the function is activated → If the side door or the rear door is unlocked, an alarm sound is generated (same as the side door opening alarm sound).

Duration of alarm sound: 5 minutes (duration will be changed).

To stop after the alarm sound is generated, press the door open button with the remote key to stop (even if the side door or the rear door is locked, the alarm sound continues).

When you open the rear door with the remote key, the theft alarm will be released.

When the remote key is lost → When the rear door is opened with the start key and the engine is started, the alarm function is canceled, and when the rear door is locked with the start key, the alarm function does not operate.

Further, as a method of connecting the wiring of the sensing sensor 360, wiring is performed in the order of (a), (b), (c), (d), and (e) shown in FIG. Then, the wiring is connected in the order of (1) brake connection, (2) detection sensor switch connection, and (3) direction indicator light connection.

Therefore, the door opening / closing device for the specially equipped vehicle according to the present invention can easily open / close the side door or the rear door of the specially equipped vehicle, and the driver can use the contact sensor to determine the open state and the closed state of the side door or the rear door. Has a remarkable effect such as being able to accurately recognize and operate safely.

10 Specially equipped vehicle 11 Loading platform 12 Side door 13 Rear door 100 Opening and closing device 110 Upper body 120 Lower body 121 Through hole 130 First hinge shaft 140 Upper locking means 141 Casing 142 Guide hole 143 Fixed bar 144 Sliding bar 145 First spring 146 Long hole 150 Lower locking means 151 Locking claw 151-1 1st flat part 151-2 Inclined part 151-3 2nd straight part 151-4 Locking part 151-5 Opening 152 Bracket 153 2nd hinge shaft 154 2nd spring 155 Third hinge shaft 160 Sensor 170 Handle 300 Notification system 310 Low power MPU
320 Power supply 330 Alarm 340 Battery 350 Start button 360 Sensing sensor 370 Brake pedal

Claims (4)

In the door opening / closing device of a specially equipped vehicle equipped with a loading platform (11) so that cargo can be loaded inside.
The opening / closing device (100) has a lower body (120) whose one end is fixedly mounted on the loading platform (11) of the specially equipped vehicle (10) in the direction of the side door (12), and both ends of the lower body (120). Of these, one end located on the far side from the side door (12) is hinged to form an upper fuselage (110) that rotates about a first hinge shaft (130), and the upper fuselage (110). Is formed to be longer than the length of the lower fuselage (120).
An upper locking means (140) and a lower locking means (150) are attached to the respective surfaces of the lower fuselage (120) and the upper fuselage (110) facing each other during rotation, respectively. When the 110) rotates in the direction of the lower body (120), the upper locking means (140) mounted on the upper surface of the upper body (110) and the lower locking means (150) of the lower body (120) are attached to each other. The end of the upper fuselage (110), which is tightened and protrudes further than the lower fuselage (120 ), presses the hinged side door (12) against the loading platform (11).
The lower locking means (150) has a bracket (152) having one end projecting from the upper surface of the lower body (120) and the bracket (152) so as to rotate in the direction of the first hinge shaft (130). A second spring (154) that supports the locking claw (151) hinged to the locking claw (151) and the locking claw (151) so as to return to the original position when the locking claw (151) is rotated by an external force. ) And,
The upper locking means (140) has a bracket (152) protruding from the upper surface of the lower fuselage (120) and a locking claw when the upper fuselage (110) rotates and comes into contact with the lower fuselage (120). When the elongated hole (146) formed long in the length direction of the upper body (110) and the upper body (110) rotate to come into contact with the lower body (120) so that (151) penetrates. A casing (141) in which an internal space is formed so that a bracket (152) penetrating the elongated hole (146) and a locking claw (151) are located inside, and upper portions on both side surfaces of the casing (141). A guide hole (142) formed long in the length direction of the fuselage (110), a sliding bar (144) having both ends penetrating the guide hole (142), and a casing (144) parallel to the sliding bar (144). It is composed of a fixed bar (143) whose both ends are fixed to the inner side surface of 141) and a first spring (145) whose both ends are tightened between the sliding bar (144) and the fixed bar (143). When the upper body (110) is rotated with respect to the first hinge axis (130) and brought into contact with the upper surface of the lower body (120), it is formed on the upper surface of the lower body (120). A door opening / closing device for a specially equipped vehicle, characterized in that the locking claw (151) is fastened to the sliding bar (144). The door opening / closing device for a specially equipped vehicle according to claim 1, wherein the fixed bar (143) is located at a distance farther from the first hinge shaft (130) than the sliding bar (144). The locking claw (151) is long in the length direction of the lower body (120) and is in contact with the upper surface of the lower body (120), and the first straight line portion (151-1) is in contact with the first straight line. Of both ends of the portion (151-1), an inclined portion (151-2) is formed by extending upward at an end portion close to the first hinge axis (130), and the inclined portion (151-2) is formed. At the end of 2), a second straight line portion (151-3) is formed in parallel with the first straight line portion (151-1).
Of both ends of the first straight line portion (151-1), a hook-shaped locking portion ( 151-4 ) is attached to the first hinge shaft (151-4) at the end located at a distance far from the first hinge shaft (130). It is extended so as to form an opening (151-5) toward (130), but at the connecting portion between the first straight line portion (151-1) and the locking portion (151-4). The door opening / closing device for a specially equipped vehicle according to claim 1, wherein the second hinge shaft (153) is hinged to a bracket (152). A sensor (160) that detects contact with the upper fuselage (110) is attached to the upper surface of the lower fuselage (120) located between the first hinge shaft (130) and the locking claw (151). The door of the specially equipped vehicle according to claim 1, wherein when the upper body (110) rotates and comes into contact with the lower body (120), the door of the specially equipped vehicle also comes into contact with the sensor (160). Opening and closing device.

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