JPH0569276U - Lock handle device for quick opening door - Google Patents

Abstract

(57) [Abstract] [Purpose] The door can be unlocked and opened quickly because the lever handle restraint release operation and the locking rod rotation operation can be performed by a single operation of pulling the lever handle. Provided is a lock handle device. [Structure] A passive protrusion 18 is provided at an intermediate portion of the latch lever 11, and a drive rod 22 for pushing the passive protrusion 18 is fixedly provided at a tip end portion of a drive arm 21 of a lever handle 20.
An interlocking portion 24 that engages with and disengages from the driven portion 23 at the tip of the front plate portion 12 of the rod operation plate 3 is provided at the root portion of 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door lock handle device mounted on a refrigerating / freezing container of a refrigerated vehicle.

[0002]

[Prior Art]

 In the lock handle device for doors used in refrigerated vehicles, the base end of the rod operation plate is pivotally attached to the main body case fixed to the door by the drive shaft, and it is attached to the tip of the lock rod connected to the drive shaft. A latch that engages with and disengages from the container body is provided, and a lever handle is pivotally attached to the tip of the rod operation plate by a connecting shaft.However, the lever handle is disengaged from the locked position due to vibration impact during traveling, and the door In order to prevent the risk of unintentional opening of the lever, it is necessary to restrain the lever handle to the body case by some means.

In the conventional lock handle device for a door disclosed in West Germany Registered Utility Model No. 7629803, a latch lever is pivotally attached to a main body case by a support shaft fixed to a bottom plate of the main body case, and a rod operating plate. By projecting the locking arm in the front part of the latch lever from the slot in the front plate of the, and holding the engagement between the hole edge of the slot and the tip hook of the locking arm with the spring bias. , The lever handle is restricted to the body case.

In this door lock handle device, when the door is released, the operator pushes the lock arm with the fingertip of one hand, so that the tip of the latch lever is disengaged from the hole edge of the groove. It is necessary to pull the lever handle toward you with the other hand while keeping the released state.

However, in a cold storage vehicle that has to load and unload luggage during a short parking time due to congested road conditions, the unlocking operation of the door lock handle device needs to be performed easily and quickly. In the above method, in which the lever handle is released and the lock handle is released and the locking rod is rotated by pulling the lever handle stepwise using both hands, the operability is poor and the door cannot be quickly opened. Unable to unlock and open.

[0006]

[Problems to be solved by the device]

 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a lock handle device for a quick-opening type door, which can accurately perform a release operation of a lever handle and a rotation operation of a locking rod by a single operation of pulling a lever handle.

[0007]

[Means for Solving the Problems]

 Referring to the reference numerals in the accompanying drawings, the door lock handle device of the present invention pivotally attaches the base end portion of the rod operating plate 3 to the main body case 2 fixed to the door 1 by the drive shaft 4. Then, a lock rod 5 connected to the drive shaft 4 is provided with a latch 8 that engages and disengages with a lock 7 on the side of the fixed frame 6, and a latch lever 11 is provided with a support shaft 10 fixed to a bottom plate 9 of the main body case 2. It is pivotally attached to the main body case 2 and the locking arm 14 at the front part of the latch lever 11 is projected from the groove hole 13 of the front plate portion 12 of the rod operation plate 3 to make the hole edge portion 15 of the groove hole 13 and the locking arm 14 The engagement with the front end hook portion 16 is retained by the biasing force of the spring 17.

A passive protrusion 18 protruding toward the drive shaft 4 is provided at an intermediate portion of the latch lever 11, and a lever handle 20 is pivotally attached to a tip end portion of the rod operation plate 3 by a connecting shaft 19. A drive rod 22 that pushes the passive protrusion 18 to rotate the latch lever 11 in the unlocking direction is fixed to the tip of the drive arm 21 of the lever handle 20 that protrudes to the side, and the front rod 12 of the rod operation plate 3 is fixed. An interlocking part 24 that engages with and disengages from the driven part 23 on the rear side of the tip part is provided on the front side of the base part of the drive arm 21.

[0009]

[Action]

 As shown in FIG. 1, when the latch 8 is engaged with the catch 7 and the door 1 is locked in the closed state, as shown in FIG. 3, the rod operation plate 3 and the lever handle 20 are in the main body case. 2, the hook portion 16 of the latch lever 11 is engaged with the hole edge portion 15 of the groove hole 13 of the rod operation plate 3, and this engagement state is dependent on the bias of the spring 17. Is held. A floating gap is left between the interlocking portion 24 of the drive arm 21 and the driven portion 23 of the rod operation plate 3.

To unlock and open the door 1, it is sufficient to pull the lever handle 20 toward you. In FIG. 3, when the lever handle 20 rotates counterclockwise around the connecting shaft 19, the drive rod 22 of the drive arm 21 pushes the passive protrusion 18 of the latch lever 11, so that the latch lever 11 moves the support shaft 10. Rotating counterclockwise around the center, the locking arm 14 rotates in the slot 13 toward the drive shaft 4. As a result, the tip hook portion 16 is disengaged from the hole edge portion 15 of the groove hole 13, so that the restraint of the lever handle 20 on the body case 2 is released.

When the restraint of the lever handle 20 is released, the floating gap disappears and the interlocking portion 24 of the drive arm 21 is engaged with the driven portion 23 of the rod operation plate 3. Therefore, when the lever handle 20 is pulled further forward, the rod operation plate 3 rotates counterclockwise around the drive shaft 4, and the locking rod 5 rotates in the unlocking direction via the drive shaft 4. Then, the engagement of the latch 8 and the latch 7 is released. In this way, the door 1 whose lock is released from the fixed body 6 is opened by further pulling the lever handle 20 toward you.

[0012]

【Example】

 In the illustrated embodiment, the lever handle 20 is bent in a U shape, and the drive arms 21 are provided in a pair in the upper and lower directions. Both ends of the connecting shaft 19 of the lever handle 20 are fixed to the upper plate portion 25 and the lower plate portions 25 and 26 of the rod operating plate 3. The support shaft 10 of the latch lever 11 is fixed to a pair of upper and lower bearing plates 27 and 28 fixed to the bottom plate 9 of the body case 2, and penetrates the latch lever 11 composed of a plurality of L-shaped plate members. . A passive arm 29 projecting to the side opposite to the drive shaft 4 is provided at the rear portion of the latch lever 11. The urging spring 17 is composed of a torsion coil spring, the coil portion is fitted to the support shaft 10, the intermediate linear portion 17a abuts on the locking arm 14, and the linear end portion 17b is attached to the bottom plate 9 of the main body case 2. Abutting.

A lock unit 30 is fixed to the front plate portion 12 of the rod operation plate 3, and a locking metal plate 31 that engages and disengages with the passive protrusion 18 of the latch lever 11 is attached to the rear end portion of the rotor of the lock unit 30. It's stuck. When the loading and unloading of luggage is completed and the door 1 and the fixed frame body 6 are to be fully tightened and locked, the rotor of the lock unit 30 is rotated with a predetermined key, and the stopper plate 31 is attached to the rear side of the passive protrusion 18. To combine. As a result, rotation of the latch lever 11 in the restraint releasing direction is blocked, and the lever handle 20 cannot be pulled and operated.

The distal end of the passive arm 29 faces the through hole 32 of the bottom plate 9 of the main body case 2, and the emergency opening operation rod 33 is inserted into the through hole 32. The worker who has accidentally closed the door 1 inside the fixed frame body 6 such as the container body and locked by the lock unit 12 and locked in the fixed frame body 6 is a worker who is locked by the emergency opening operation rod. The passive arm 29 of the latch lever 11 is pushed toward the front side by 33. As a result, the latch lever 11 rotates in the restraining and unlocking direction without the interference of the stopper plate 31, so that the operator can quickly escape from the inside of the fixed frame body 6.

[0015]

[Effect of the device]

 As described above, in the door lock handle device of the present invention, the passive protrusion 18 is provided at the intermediate portion of the latch lever 11, and the drive rod 22 for pushing the passive protrusion 18 is fixedly provided at the tip of the drive arm 21 of the lever handle 20. The driving arm 21 is provided with an interlocking portion 24 which is engaged with and disengaged from a driven portion 23 at the front end of the front plate portion 12 of the rod operating plate 3 for releasing the restraint operation of the lever handle 20 and the locking rod. Since the rotation operation of 5 can be accurately performed by a single operation of pulling the lever handle 20, the door 1 can be unlocked and opened quickly.

[Brief description of drawings]

FIG. 1 is a front view of a cold-insulated vehicle container equipped with a door lock handle device according to an embodiment of the present invention in a door closed state.

FIG. 2 is a front view of the door lock handle device.

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

[Explanation of symbols]

 1 Door 2 Main Body Case 3 Rod Operating Plate 4 Drive Shaft 5 Locking Rod 6 Fixing Frame 7 Receiving 8 Latch 9 Main Body Case Bottom Plate 10 Support Shaft 11 Latch Lever 12 Front Plate Part of Rod Operating Plate 13 Groove Hole 14 Locking arm 15 Hole edge 16 Latch lever tip hook 17 Energizing spring 18 Latch lever passive protrusion 19 Connecting shaft 20 Lever handle 21 Drive arm 22 Drive rod 23 Drive rod follower 24 Drive arm interlocking part 25 Upper Plate of Rod Operating Plate 26 Lower Plate of Rod Operating Plate 27 Bearing Plate 28 Bearing Plate 29 Passive Arm of Latch Lever 30 Locking Unit 31 Stopper Plate 32 Through Hole of Bottom Plate of Main Case 33 Emergency Opening Operation Rod 33

Claims (1)

[Scope of utility model registration request] 1. A drive shaft 4 has a base end portion of a rod operating plate 3 pivotally attached to a main body case 2 fixed to a door 1 by a drive shaft 4.
A lock rod 5 connected to the lock rod 5 is provided with a latch 8 for engaging with and disengaging from a lock 7 on the side of the fixed frame body 6, and a latch shaft 11 fixed to a bottom plate 9 of the main body case 2 causes the latch lever 11 to move.
The locking arm 14 at the front part of the latch lever 11 is protruded from the slot 13 of the front plate 12 of the rod operation plate 3, and the hole edge 15 of the slot 13 and the tip end hook of the locking arm 14 are pivotally attached to the lock arm 14. The engagement with the portion 16 is retained by the biasing force of the spring 17, the passive protrusion 18 protruding toward the drive shaft 4 is provided in the middle portion of the latch lever 11, and the connecting shaft 19 is provided at the tip end portion of the rod operation plate 3.
The lever handle 20 is pivotally attached by the above, and the drive rod 22 that pushes the passive protrusion 18 to rotate the latch lever 11 in the unlocking direction is fixed to the tip end of the drive arm 21 of the lever handle 20 that projects toward the drive shaft 4. Then, the lock handle device for a quick-opening door is provided on the front side of the root portion of the drive arm 21 with the interlocking portion 24 that engages with and disengages from the driven portion 23 on the rear side of the front end portion of the front plate portion 12 of the rod operation plate 3.