JP2565650Y2 - Truck cab lock device - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a track for locking a cab to a frame by operating a cab lock handle and engaging a lock pin of a lock plate provided on the cab with an anchor hook provided on the frame. The present invention relates to a tilt cab lock device.

[0002]

2. Description of the Related Art Various apparatuses have been proposed (for example, Japanese Utility Model Application Laid-Open No. 62-67879, Japanese Utility Model Application Laid-Open No. 58-64570 by the present applicant, and Japanese Utility Model Application Laid-Open No. 2-11781).
No.).

In the former proposal, in order to urge the lock plate in the locking direction, a coil spring is wound around a connecting pin for pivotally supporting the lock plate on a rotating arm, and one end of the coil spring is connected to an operating rod. Is fixed to a shaft connected to a rotating arm, and the other end is fixed to a lock plate. Therefore, it is difficult to attach and detach the coil spring, and adjustment of the spring force and the like is troublesome. Further, in the former proposal, at the time of unlocking operation, the shaft connecting the operating rod to the rotating arm presses the end face of the lock plate, and the lock plate is moved in the direction in which the lock pin is disengaged from the anchor hook on the frame side. I try to move it. Therefore, there is a problem that it is difficult to arrange the position of the shaft.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention facilitates the attachment and detachment of a spring that urges a lock plate in a locking direction in a truck cab lock device, and can easily adjust a spring force. The purpose is to be. Another object of the present invention is to improve the degree of freedom in designing the pressed portion in the device.

[0005]

According to the present invention, a connecting plate is provided at an upper end of a lock plate, a hook is provided on a rotating arm, and a lock is provided between the connecting plate of the lock plate and the hook of the rotating arm. A coil spring that urges the locking pin of the plate in the locking direction for engaging the anchor hook is stretched.

Further, according to the present invention, a bent piece which is bent outward is formed on the end of the rotating arm on the coil spring side,
With the bent piece, when the cab lock handle is operated in the unlocking direction, the edge of the lock plate is pressed to move the lock pin in a direction to separate from the anchor hook.

[0007]

In the truck cab lock device constructed as described above, when the cab lock handle is operated in the locking direction, the lock plate is rotated via the rotation arm, and the lock pin is engaged with the anchor hook. Locked. In this locked state, the lock plate is urged in the locking direction by the coil spring, so that the lock pin is securely prevented from coming off the anchor hook and being unlocked.

When the cab lock handle is operated in the unlocking direction, the lock plate is rotated in the unlocking direction, contrary to the above. At this time, the bent piece of the rotating arm presses the end face of the lock plate to release the lock pin from the anchor hook, so that the lock is released.

The coil spring may be stretched between the connecting plate of the lock plate and the hook of the rotating arm, and the coil spring can be easily attached and detached, and the spring force can be easily adjusted. In addition, since the bent piece for releasing the lock pin from the anchor hook is formed by bending integrally with the rotating arm, the structure can be made simple and inexpensive.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

Referring to FIG. 1, the left side will be described as an example.
The floating bracket 3 has a mounting rubber 4 and a shock absorber 5 on the bracket 2.
And are elastically supported. An anchor hook 6 is provided upright on the bracket 3.

On the other hand, a cab mount bracket 10 which is seated on the shoulder rubbers 7 of the floating bracket 3 protrudes from the bottom of the cab. An upper portion of a cab lock handle 12 is rotatably supported by a base 11 provided on the cab, and one end of an operation rod 21a is pivotally attached to an upper end of the handle 12.
In addition, the tilt lock bracket 22 includes the shaft 13.
The rotation arm 14 is rotatably supported by the arm 14, and the operating rod 21
The other end of a is pivotally mounted. And, this rotating arm 1
4 is provided with a lock plate 17
Is rotatably supported.

Referring to FIG. 2 as well, the rotating arm 14 is formed of a steel plate having a U-shaped cross section with the connecting pin 16 side open and a triangular side surface.
Is provided at the approximate top of the triangle. On the other hand, the lock plate 17 is also formed of a steel plate having a U-shaped cross section in which the connecting pin 16 side is closed and a V-shaped side face.
Is cut out, and the end of the rotating arm 14 is clamped in that portion. A lock pin 18 protrudes from the lower end of the lock plate 17, and a lock pin 18 is provided between a connection plate 19 provided on the upper end and a hook 14 a protruding from the plate 19 of the rotating arm 14. A coil spring 20 that urges the pin 18 to the side that engages with the anchor hook 6, that is, the lock side, is stretched. And the rotating arm 1
Folded pieces 14b, 14b that open outward at a right angle are formed on both end edges of the coil spring 20 on the side of the coil spring 20. The right side is configured similarly to the left side except for the cab lock handle 12 and the operation rod 21a, and a shaft (not shown) corresponding to the left side shaft 15 is connected to the left side shaft 15 by a lock link 21b.

Next, the operation will be described. When locked,
The cab lock handle 12 is rotated counterclockwise. Then, the operating rod 21a moves to the left, and rotates the rotating arm 14 counterclockwise around the shaft 13. As a result, the connecting pin 16 rotates counterclockwise around the shaft 13 and pulls up the lock lever 17, and at the same time, the coil spring 20 rotates the lock lever 17 counterclockwise around the connecting pin 16 as shown in FIG. As shown, the lock pin 18
Is engaged with the anchor hook 6 to lock the cab to the frame 1 side. In this state, since the lock pin 18 is urged by the coil spring 20, it is reliably prevented from coming off the anchor hooker 6.

When unlocked, the cab lock handle 1
2 is rotated clockwise. Then, the rotation arm 14 rotates clockwise by the reverse operation to the above, and the bent pieces 14b, 14b
b presses the edge of the lock plate 17 and rotates the lock plate 17 clockwise around the connecting pin 16 to release the lock pin 18 from the anchor hook 6 to lock the cab as shown in FIG. To release.

[0016]

According to the present invention, a coil spring for urging a lock pin of a lock plate to be engaged with an anchor hook on a frame side in a locking direction is provided between a connecting plate provided on an upper end of the lock plate and a hook provided on a rotating arm. Since it is stretched, it can be easily attached and detached and the spring force can be easily adjusted.

A bent piece which is bent outward is formed on the rotating arm, and the bent piece pushes an edge of the lock plate to move the lock plate in a direction to release the lock pin from the anchor hook. Therefore, the pressing portion can be provided at any desired position, the degree of freedom of design is improved, and the bending piece as the pressing member has a simple structure and can be manufactured at low cost. be able to.

[Brief description of the drawings]

FIG. 1 is a rear view showing the left side of an embodiment of the present invention.

FIG. 2 is a perspective view showing a rotating arm and a lock plate.

FIG. 3 is a rear view illustrating a locked state.

FIG. 4 is a rear view illustrating a state at the time of unlocking.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Frame 2 ... Cab mount bracket 3 ... Floating bracket 4 ... Mount rubber 5 ... Shock absorber 6 ... Anchor hook 7 ... Shoulder rubber 10 ... Cab mount bracket 11 ... Base 12 ... Cab lock handle 13 ... Shaft 14 ... Rotating arm 14a ... Hook 14b ... Bending piece 15 ... Shaft 16 ... Connecting pin 17 ... Lock plate 18 Lock pin 19 Connection plate 20 Coil spring 21a Operation rod 21b Lock link 22 Tilt lock bracket

Claims (1)

(57) [Scope of request for utility model registration] 1. A truck cab locking device for operating a cab lock handle to engage a lock pin of a lock plate provided on a cab side with an anchor hook provided on a frame side to lock the cab on the frame side. A rotation arm is rotatably supported by a shaft on a tilt lock bracket provided on the side, and an operation rod pivotally mounted on the cab lock handle is pivotally mounted on a shaft provided on the rotation arm. The lock plate is rotatably supported on the connection pin of the moving arm, and a lock pin is protruded from the lower end of the lock plate. The connection plate provided on the upper end of the lock plate and the rotation arm are provided on the rotation arm. A coil spring for urging the lock pin of the lock plate to engage with the anchor hook in a locking direction between the hook and the hook; A bent piece bent outward is formed at the end of the pivot arm on the coil spring side, and the bent piece operates the cab lock handle in the unlock direction. A cab locking device for a truck, wherein the lock pin is moved in a direction in which the lock pin is released from the anchor hook by pressing an edge of the lock plate.