JPH0214980A - Trank lid opening/closing device - Google Patents

Abstract

PURPOSE:To open and close easily a lid by providing manual lid operating means for operating working fluid pressure from a working fluid source at both ends of a piston in a cylinder forming an actuator for opening/closing the lid. CONSTITUTION:Air cylinders 8a for opening/closing a trank lid 3 are disposed respectively on both sides of a trank room 2. The proximal end of the air cylinder 8a is supported pivotally by a support bracket 9 fixed to an upper fixed portion at the back face side of the trank room 2. The distal end side of the air cylinder 8a is extended toward the side opening of the trank room 2. The projecting end of a piston rod projecting from the tip of the air cylinder is connected to a support arm 4 of the trank lid. A knob 11 for manual operation is provided on the lower portion of the outer surface side plate surface of the trank lid 3.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) This invention relates to a trunk lid for opening and closing a lid that closes a side opening of a trunk room formed on the side of a vehicle body such as a bus. Regarding switchgear.

(Prior Art) Generally, a vehicle such as a bus has a trunk room for storing luggage in the lower part of the vehicle body. The side opening of this trunk room is closed by a beam that can be opened and closed.

Incidentally, this type of trunk door has traditionally been opened and closed manually. Therefore, when opening and closing the trunk lid, for example, a passenger or the like must always do so from the trunk installation position outside the vehicle body. Furthermore, when the area of the side opening of the trunk compartment is large, the weight of the trunk lid increases, resulting in a problem that opening and closing the trunk lid becomes troublesome.

(Problem to be Solved by the Invention) The lid of the trunk compartment formed on the side of the vehicle body of a vehicle such as a bus has conventionally been opened and closed manually. However, this work must be carried out at the trunk installation location outside the vehicle body, and in the case of a heavy trunk lid, opening and closing the trunk lid becomes troublesome.

This invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a trunk lid opening/closing device that can simplify the opening/closing operation of the trunk lid and facilitate the manual operation of the trunk lid. The purpose is to

[Structure of the Invention] (Means for Solving the Problems) The present invention provides an actuator for opening and closing a lid that closes a side opening of a trunk room formed in a vehicle body, and connects this actuator to a supply source of working fluid. A flow path switching valve is provided for switching the working fluid flow path between the lid opening circuit and the lid closing circuit, and the flow path switching valve has both ends of the cylinder forming the actuator. A neutral position communicating with the working fluid supply source is provided, and the flow path switching valve is held at this neutral position so that working fluid pressure from the working fluid supply source is applied to both ends of the piston in the cylinder forming the actuator. A manual operating means for the lid is provided.

(Function) By automatically opening and closing the lid in accordance with the switching operation of the flow path switching valve, the opening and closing operations of the lid are facilitated, and during manual operation, the flow path switching valve is held at the neutral position, forming an actuator. By applying working fluid pressure from the working fluid supply source to both ends of the piston in the cylinder, the difference in pressure receiving areas of the working fluid at both ends of the piston creates an elongating force in the direction in which the piston rod of the cylinder protrudes during manual operation. This extension force is used as an auxiliary force when opening the rad manually.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a trunk lid opening/closing device for opening and closing a lid 3 that closes a side opening of a trunk room 2 formed on the lower side of a vehicle body 1 of a vehicle such as a bus, as shown in FIGS. 2 and 3. This shows the schematic configuration of the main parts. In this case, parallel links are formed on both sides of the trunk lid 3.

One end of each of the lower pair of support arms 4, 5 is rotatably mounted. The other ends of these support arms 4 and 5 are attached to the vehicle body 1.
It is rotatably attached to the side support brackets 6, 7, etc. When opening and closing the trunk lid 3, the support arms 4 and 5 are rotated upward and downward around pivot points ol and o2 on the vehicle body 1, respectively, thereby moving the trunk lid 3 upward and downward. A support device for the operating swing-type trunk lid 3 is formed.

Furthermore, 8a and 8b are a pair of air cylinders (actuators) that open and close the trunk lid 3. These air cylinders 8a and 8b are arranged on both sides of the trunk room 2, respectively.

In this case, the base end portions of the air cylinders 8a, 8b are rotatably supported by a support bracket 9 fixed to a fixed portion at the upper rear side of the trunk room 2.

Furthermore, the distal end side of each air cylinder 8a, 8b is extended toward the side opening side of the trunk room 2.

A piston rod 10a projects from the tip side of each air cylinder 3a, 3b.

10b (shown in FIG. 6) is connected to the trunk lid 3.
is rotatably connected to the left and right upper support arms 4.4, respectively.

Furthermore, a handle 11 for manual operation is provided at the lower part of the outer surface of the trunk lid 3, as shown in FIG.

Further, the trunk lid 3 is provided with a locking mechanism 12 that releasably locks the trunk lid 3 in the closed position when the trunk lid 3 is closed. As shown in FIG. 5, this locking mechanism 12 is provided with a rotating member 14 rotatably supported by a rotating shaft 13. This rotating member 14 has three arms 1.
5a, 15b, 15c are protruded, and each of these arms 15a, 15b, 15c has an operating rod 16a,
One end of each of 16b and 16c is connected. These operation lots t'16a, 16b.

At each other end of 16c, there is a striker 1 fixed to the vehicle body 1 side.
7... are respectively connected to hooks that are removably locked. In addition, this rotating member 14 always moves each hook to the striker 17 by means of a return spring 18.
is biased in the direction of locking. Further, a lock release air cylinder (lock release actuator) 1 for releasing the lock is connected to this rotating member 14 via an appropriate connecting member.
Nine piston rods 20 are connected. Then, as the piston rod 20 of one of the lock release air cylinders protrudes, the rotating member 14 is rotated in a direction opposite to the biasing direction of the return spring 18, and each hook of the locking mechanism 12 is moved by the striker 17... It is designed to be moved in the direction of unlocking the lock.

On the other hand, FIG. 6 shows a control air circuit for the air cylinders 8a and 8b that operate the trunk lid 3 to open and close.

In FIG. 6, 21 is an air tank (working fluid supply source). A compressor (not shown) is connected to the air tank 21, and compressed air is supplied from this compressor.

Further, 22 is an air tank 21 and air cylinders 8a and 8b.
This is a flow path switching valve that switches the air flow path between.

This flow path switching valve 22 has a first valve. Second. 3rd゜4th. Each fifth port 22a, 22b, 22c.

22d and 22e are provided, respectively. The air tank 21 is connected to the first port 22a of the flow path switching valve 22 via an air filter 23, an emergency exhaust valve 24, etc.
are connected. Further, a speed controller 25 for adjusting the speed when the lid 3 is opened is connected to the second port 22b of the flow path switching valve 22, and an exhaust pipe 26 is connected to the third port 22c.

Further, the base end sides of each air cylinder 8a and 8b are connected to the fourth port 22d through a pressure reducing regulator (pressure reducing mechanism) 27 that reduces the closing operation speed of the lid 3 and a closing circuit switching valve 28, respectively. connected. In this case, one end of a bypass circuit 29 for bypassing the regulator 27 is connected to the closing circuit switching valve 28 . The other end of this bypass circuit 29 is connected between the regulator 27 and the fourth port 22d.

Furthermore, each air cylinder 8 is connected to the fifth port 22e through a flow path switching valve 30 for unlocking and a speed controller 31 for speed adjustment when the lid 3 is closed.
The distal ends of a and 8b are connected to each other. In this case, the lock release flow path switching valve 30 and the fifth port 22
One end of a bypass circuit 32 is connected to e. The other end of this bypass circuit 32 is connected to a flow path switching valve 33 for preventing unlocking under weight and a speed controller 3i%.
The lock release air cylinder 19 is connected to the base end side of the lock release air cylinder 19 through the air cylinders.

In addition, the flow path switching valve 22 is in a non-energized state, in an energized state A, and in a energized state B.
Each can be switched to the energized state. In the non-energized state, the first port 22a and the fourth port 22a are connected to each other as shown in FIG. 7(a). In the state in which the fifth ports 22d and 22e are connected, and in the B energized state, as shown in FIG. and the fourth port 22d, and in the A energized state, as shown in FIG. The circuit for opening the lid 3 shown in FIG. 12 when B is energized, and the circuit shown in FIGS. 13 and 14 when A is energized. Closing circuits for the lids 3 shown are formed respectively.

Further, FIG. 8(a) shows the non-energized state of the closing circuit switching valve 28, FIG. 8(b) shows the energized state of the closing circuit switching valve 28, and FIG. 9(a) shows the flow path switching for preventing lock release. valve 33
Figure 1(b) shows the non-energized state of the lock release prevention passage switching valve 33, Figure 1(a) shows the non-energized state of the unlocking passage switching valve 30, and Figure 1(b) shows the non-energized state of the lock release prevention passage switching valve 33. The flow paths in the energized state of the lock release flow path switching valve 30 are shown respectively.

A safety device including a photodetector 34 is disposed inside the trunk 2 near the side opening on the side wall surface. This photodetector 34 is formed by a light emitter 34a and a light receiver 34b which are arranged to face each other in a spaced manner between opposing walls in the trunk compartment 2, and are located on the trunk lid 3.
If the light between the light emitter 34a and the light receiver 34b is interrupted during the closing operation of the lid 3, the flow path switching valve 22 is immediately switched from the A energized state to the B energized state and the lid 3 closing operation is stopped. It has become so.

Further, a first stroke switch 35 is attached to the lock release air cylinder 19. The first stroke switch 35 causes the piston rod 20 of the air cylinder 19 to move a predetermined stroke to unlock the lock mechanism 12 of the lid 3 when air is supplied into the lock release air cylinder 19 from the air tank 21 side. It is set to turn on when the power is turned on.

Furthermore, one air cylinder 8a is provided with a second stroke switch 36. The other air cylinder 8b has Eli'S.
Three stroke switches 37 are respectively attached. In this case, the second stroke switch 36 moves the air cylinder 8 from the air tank 21 side when the lid 3 is closed.
The second stroke switch is set to be turned on when the piston rod 10a of the air cylinder 8a moves a predetermined stroke when air is supplied into the air cylinder 8a through the closing circuit of the lid 3. The switching operation of the closing circuit switching valve 28 is controlled in accordance with the operation of the closing circuit switching valve 36. Further, the third stroke switch 37 is configured such that when air is supplied from the air tank 21 side into the air cylinder 8b through the closing circuit of the lid 3 during the closing operation of the lid 3, the piston rod 10b of the air cylinder 8b is set to a predetermined position. It is set to be turned on when the third stroke switch 37 moves, and the power cutoff operation of the photodetector 34 is controlled in accordance with the operation of the third stroke switch 37.

Further, an opening/closing switch 39.39 for the trunk lids 3, 3 is provided around the driver's seat 38 in the vehicle interior, and when the opening/closing switch 39.39 is operated, the trunk lids 3, 3 are automatically opened/closed. It has become so. Note that a manual switch for the trunk lid 3.3 is provided near the open/close switch 39.39. This manual switch is normally held in the on state (other than during manual operation), and is turned off when the trunk lids 3, 3 are manually operated.

Next, the operation of the above configuration will be explained.

First, when the open/close switch 39 is turned on while the trunk lid 3 is closed, the lock release flow path switching valve 3o and the lock release prevention flow path changeover valve 33 are first switched to the energized state. The flow path switching valve 22 and the closing circuit switching valve 28 are each maintained in a non-energized state. Therefore, in this state, as shown in FIG.
, 8b, and the air is supplied in the direction in which the trunk lid 3 is closed. Furthermore, since air is supplied to the lock release air cylinder 19 at the same time as the air is supplied in the closing direction of the trunk lid 3, the rotation member 14 is moved as the piston rod 20 of the lock release air cylinder 19 protrudes. The return spring 18 is rotated in a direction opposite to the direction of the biasing force, and each hook of the lock mechanism 12 is moved in the direction of releasing the lock from the striker 17, so that the lock mechanism 12 is unlocked.

Further, as the lock mechanism 12 is unlocked, the first stroke switch 35 of the lock release air cylinder 19 is turned on. As the first stroke switch 35 is turned on, the flow path switching valve 22 changes from the state shown in FIG.
o are respectively switched to a non-energized state, and in this state, a circuit for opening the lid 3 shown in FIG. 12 is formed.

Therefore, in this case, the air supplied from the air tank 21 side is introduced into the inside of each air cylinder 8a, 8b from the port on the base end side of each air cylinder 8a, 8b, and the air is introduced in the opening direction of the trunk lid 3. Since it is supplied, the air cylinder 8a.

8b, the trunk lid 3 is automatically opened as shown by the phantom line in FIG.

Further, when the opening/closing switch 39 is turned off while the trunk lid 3 is open, the flow path switching valve 22 is first changed from the state shown in FIG. Since the release prevention flow path switching valve 33 is switched to a non-energized state, a circuit for closing the lid 3 shown in FIG. 13 is formed in this state. Therefore, in this case, air supplied from the air tank 21 side is introduced into the inside of each air cylinder 8a, 8b from the port on the tip side of each air cylinder 8a, 8b, and air is supplied in the direction of closing the trunk lid 3. be done. In this case, since a pressure reducing regulator 27 is interposed in the air supply passage that is supplied from the air tank 21 side to the ports on the tip side of each air cylinder 8a, 8b, the regulator 27 controls the air supply speed. The closing operation speed of the lid 3 is reduced, and the lid 3 is closed relatively slowly.

Note that during the closing operation of the lid 3, the light emitting device 34 of the photodetector 34 placed oppositely near the side opening of the trunk compartment 2
When the light between A and the light receiver 34b is cut off, the flow path switching valve 22 is immediately switched from the A'if1 energized state to the B energized state, and the closing operation of the lid 3 is stopped. There is.

Also, during the closing operation of the seat 3, when the piston rod 10b of the air cylinder 8b moves a predetermined stroke, the third
The third stroke switch 37 is turned on, and in response to the turn-on operation of the third stroke switch 37, the photodetector 3
4 power is cut off.

Furthermore, during the closing operation of the lid 3, when the piston rod 10a of the air cylinder 8a moves a predetermined stroke, the second
The stroke switch 36 is turned on. and,
This second stroke will be. Therefore, in this state, as shown in FIG. 14, each air cylinder 8a is opened from the air tank 21 side.

Air is supplied to each air cylinder 8a in a state in which the regulator 27 in the air supply passage, which is supplied to the port on the distal end side of the air cylinder 8b, is bypassed via a bypass circuit 29.

Since it is supplied to the port on the tip side of the lid 8b, the closing operation speed of the lid 3 is increased just before the lid 3 is closed. Then, at the same time as the lid 3 reaches the closed position, each hook of the locking mechanism 12 of the lid 3 is activated by the striker 17...
The lid 3 is locked in the closed position by the locking mechanism 12.

On the other hand, when the manual switches of the trunk lids 3, 3 are turned off, the flow path switching valve 22, the blocking circuit switching valve 28, the lock release prevention flow path switching valve 33, and the lock release flow path switching valve 30 are activated. Each is operated to be switched to a non-energized state. Therefore, in this case, the manual circuit shown in FIG. 15 is formed, so that the air supplied from the air tank 21 side is maintained in a state where it is introduced to both sides of each piston of each air cylinder 8a, 8b. .

Further, in an emergency, the exhaust valve 24 is manually operated.

In this case, the emergency circuit shown in FIG.
It is maintained in a state where it is exhausted to the outside through the.

Therefore, in the case of the above configuration, the trunk lid 3 is automatically opened and closed in accordance with the switching operation of the flow path switching valve 22. The opening/closing operation of No. 3 can be facilitated.

Furthermore, during manual operation, the flow path switching valve 22 is held in a de-energized state (neutral position), and air pressure from the air tank 21 side is applied to both ends of the pistons in the air cylinders 8a and 8b. Due to the difference in the air pressure receiving areas at both ends of the pistons in the cylinders 8a, 8b, an elongating force can be applied in the direction in which the piston rods 10a, 1Qt) of each air cylinder 8a, 8b protrude during manual operation. Therefore, this stretching force can be applied manually to the lid 3.
Since it can act as an auxiliary force when opening the trunk lid 3, manual operation of the trunk lid 3 can be facilitated.

Note that this invention is not limited to the above embodiments. For example, in the above embodiment, during the closing operation of the lid 3, the third stroke switch 37 is turned on, and then the second stroke switch 36 is turned on. The second stroke switch 36 may be turned on before the third stroke switch 37 is turned on. Further, in the above embodiment, an air circuit using air as the working fluid for the control circuit of the air cylinders 8a and 8b has been described, but it may also be constituted by a hydraulic circuit. Furthermore, it goes without saying that various other modifications can be made without departing from the gist of the invention.

[Effects of the Invention] According to the present invention, an actuator for opening and closing a lid that closes a side opening of a trunk room formed in a vehicle body is provided, and a working fluid flow path is provided between the actuator and a working fluid supply source. A flow path switching valve is provided for switching between a circuit for opening the lid and a circuit for closing the lid, and the flow path switching valve has both ends of the cylinder forming the actuator facing the working fluid supply source side. A manual operation of the lid that maintains the flow path switching valve in this neutral position and applies working fluid pressure from the working fluid supply source to both ends of the piston in the cylinder forming the actuator. Since the operating means is provided, opening and closing operations of the trunk lid can be facilitated, and manual operation of the trunk lid can also be facilitated.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view showing a schematic configuration of the main parts of the trunk lid opening/closing device, Fig. 2 is a perspective view showing the external appearance of the bus, and Fig. 3 is a trunk lid opening/closing device. 4 is a schematic configuration diagram showing the trunk lid locking mechanism, FIG. 5 is a front view showing the configuration of the main parts of the locking mechanism, and FIG. 6 is a trunk lid opening/closing diagram. A schematic configuration diagram showing the control air circuit of the air cylinder for use, FIG. 7(a) shows the flow path of the flow path switching valve in a non-energized state, and FIG. 7(b) shows the flow path of the flow path switching valve in the B energized state. , FIG. 8(c) is a schematic configuration diagram showing the flow path in the A energized state of the flow path switching valve, FIG. 8(a) shows the flow path in the non-energized state of the closing circuit switching valve, and FIG. 8(b) FIG. 9(a) is a schematic configuration diagram showing the flow paths in the energized state of the closing circuit switching valve.
is the de-energized flow path of the flow path switching valve for preventing lock release,
10(b) is a schematic configuration diagram showing the flow paths of the lock release prevention flow path switching valve in the energized state, and FIG. 10(a) shows the flow paths of the lock release prevention flow path switching valve in the non-energized state, respectively. Figure (b
) is a schematic configuration diagram showing the flow path of the lock release flow path switching valve in the energized state, Figure t1 is a schematic configuration diagram showing the air flow path during lock release operation, and Figure 12 is during trunk lid opening operation. 13 is a schematic configuration diagram showing the air flow path during the trunk lid closing operation, and FIG. 14 is a schematic configuration diagram showing the air flow path immediately before the trunk lid closing operation ends. 15 is a schematic configuration diagram showing the air flow path during manual operation of the trunk lid, and FIG. 16 is a schematic configuration diagram showing the air flow path in an emergency. DESCRIPTION OF SYMBOLS 1... Vehicle body, 2... Trunk room, 3... Trunk lid, 8a, 8b... Air cylinder (actuator), 21... Air tank, 22... Flow path switching valve.

Claims (1)

[Claims] An actuator for opening and closing a lid that closes a side opening of a trunk room formed inside the vehicle body is provided, and a working fluid flow path between the actuator and a working fluid supply source is connected to a circuit for opening the lid and the lid. In addition to providing a flow path switching valve that switches between the closing circuit and the
The flow path switching valve is provided with a neutral position in which both ends of the cylinder forming the actuator are communicated with the working fluid supply source side, and the flow path switching valve is held at this neutral position to form the cylinder forming the actuator. A trunk lid opening/closing device characterized in that a manual operating means for the lid is provided for applying working fluid pressure from the working fluid supply source to both ends of a piston therein.