JPS6344305Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cab lock device for a tail cab type truck.

Conventionally, the locking device between the cab and the chassis connected to the rear of a tail-cab type freight vehicle is composed of one hook and a link, so that the locking mechanism between the cab and the chassis connected to the rear of the truck is composed of one hook and one link. There was a risk that the connecting pin on the side would come off and the connection between the cab and chassis would be severed.

The purpose of this invention is to reliably maintain the connection between the cab and chassis, that is, to maintain the locked state, and to ensure safety in the event of a collision or while driving.

An example of the implementation of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a bracket with a U-shaped plane that is attached to the lower part of the rear wall of a cab, and the bracket 1 includes a front wall 1a, a side wall 1b, a rear wall 1c, and a It consists of a bottom wall 1d connected to the front on one side, and the upper part of the front wall 1a is a second
A guide edge 1e is formed by cutting out a substantially uneven shape as shown in the figure. Reference numeral 2 denotes a main shaft installed across the front wall 1a and the rear wall 1c at the center of the bracket 1, and one end 3 of each of the front link 3 and the rear link 4 is attached to the main shaft 2.
A, 4a are rotatably supported, and a pin 5 is horizontally protruded outward from the outside of the other end 3b of the front link 3, and a pin 5 is provided inside the other end 3b from the front link 3. A pin 6 is installed and fixed over the rear link 4. 7
is a U-shaped main hook located between the front link 3 and the rear link 4, and the upper arm 7a of the main hook 7
The tip portion 7b is rotatably supported by the pin 6, and the hook portion 7c is formed to project downward from the bracket 1 and to be removable from a connecting pin protruding upward from the tip of the shear. The rear link 4 has an upper part 8 of the arcuate link 8 at an intermediate position between the main shaft 2 and the pin 6.
a is rotatably supported by a pin 9, and the tip 11b of the upper arm 11a of the sub hook 11 is fixed to a pin 10 rotatably attached to the lower part 8b of the arcuate link 8, and One end 12a of an oblong stopper 12 is fixed to the pin 10.
Reference numeral 13 denotes a pin, whose tip 13a is fixed to the front wall 1a of the bracket 1, and its rear end 13b is supported on a support plate 14 attached to the rear wall 1c of the bracket 1, and between the front wall 1a and the rear wall 1c. The outer cylinder 15 is rotatably fitted, the intermediate portion 11c of the upper arm 11a of the sub hook 11 is fixed to the outer cylinder 15, and the pin 13 is fixed to the outer cylinder 15.
The rear part of the stopper 12 rotatably supports the intermediate part of the stopper 12. The hook portion 11d of the sub hook 11 is made to protrude downward from the bracket 1, and is formed in a positional relationship such that the hook portion 11d overlaps the hook portion 7c of the main hook 7 when the lock is locked. One end 16a of a rod 16 is rotatably attached to the pin 5, and the other end 16b of the rod 16 is connected to the upper end 17a of a remote control lever 17 by a shaft 18, and the intermediate portion 17 of the lever 17
Bracket 19 with b installed on the rear wall side of the cab
It is rotatably supported by a shaft 20.

In the figure, reference numeral 21 denotes a spring that has the elasticity to rotate the main hook 7 counterclockwise in order to facilitate the engagement of the hook portion 7c of the main hook 7 with the connecting pin. Link 4
One end 21a is engaged with the front link 3a and the rear link 4a, and the other end 21a is engaged with the front link 3a and the rear link 4a.
b is locked to the main hook 7.

Next, to explain the operation of the present invention, in the unlocked state shown in FIG.
When the rod 16 is rotated downward around the center and pulled to the left, the front link 3 and rear link 4 are pulled up to the left (arrow) around the main shaft 2 as shown in Fig. 4, and the pin 5 is also pulled up at the same time. Since the main hook 7 is displaced to the left while drawing an arcuate locus around the main shaft 2, the main hook 7 is also displaced counterclockwise, and the hook portion 7c at the tip thereof is engaged with the connecting pin of the sear. At this time, as the front link 3 rotates, the upper part 8a of the arcuate link 8 is displaced upward together with the pin 9, so the lower pin 10 also moves to the upper arm 1 of the sub hook 11.
Tip 11b of 1a and one end 12 of stopper 12
The sub hook 11 and stopper 12 rotate clockwise around the pin 13, and the hook 11d of the sub hook 11 moves upward with the hook 7c of the main hook 7.
One end 12a of the stopper 12 abuts against the bottom wall 1d of the bracket 1, and the cab and the chassis are connected and locked.

To unlock, reverse the locking process, rotate the grasping part of the lever 17 upwards to move the rod 16 to the right, and the rod 16 will push the front link 3 and rear link 4 around the main shaft 2. The main hook 7 is rotated clockwise, and the hook 7c of the main hook 7 is disengaged from the connecting pin. At the same time, the upper part 8a of the arcuate link 8 rotates clockwise together with the pin 9 and is displaced downward, and the lower part 8b and the pin 10 are also displaced downward, so that the tip 11b of the sub hook 11 and the stopper 12 are connected to the shaft 13. The hook 11d of the sub-hook 11 is removed from the connecting pin, and the lock is unlocked and the connection between the cab and the chassis is released.

Therefore, according to the present invention, the cab and chassis can be locked and unlocked simply and quickly by rotating the remote control lever, and in particular, the cab and chassis are constructed with a pair of links and two hooks, and two Since the chassis connecting pins are fastened from the left and right sides using two hooks, the connecting pins do not come off the hooks, ensuring safety while driving, and also preventing excessive input to the hooks during driving or sudden stops. The input is distributed between the two hooks, and deformation or damage to the hook portion can be prevented.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a cab vehicle equipped with the present device, showing the device in a locked state, and the imaginary line indicates the chassis. 2 is a front view of the device, FIG. 3 is a left side view of FIG. 2, FIG. 4 is a front view in a locked state, and FIG. 5 is an enlarged sectional view taken along the line AA of FIG. 4. Code: 1...Bracket, 1a...Front wall, 1b
...Side wall, 1c...Rear wall, 1d...Bottom wall, 1e...
...Guide edge, 2...Main shaft, 3...Front link, 3a...
...One end, 3b...Other end, 4...Rear link, 4
a...One end, 4b...Other end, 5...Pin, 6
...Pin, 7...Main hook, 7a...Upper arm,
7b... Tip, 7c... Hook, 7d... Rear (of upper arm 7a), 8... Arc-shaped link, 8a... Upper, 8b... Lower, 9... Pin, 10... Pin,
11... Vice hook, 11a... Upper arm, 11b
... Tip part, 11c ... Middle part, 11d ... Hook part,
12...stopper, 12a...one end, 13...
...Pin, 13a...Tip, 13b...Rear end, 14
... Support plate, 15 ... Outer cylinder, 16 ... Rod, 16
a...One end, 16b...Other end, 17...Lever,
17a...Top end, 17b...Middle part, 18...
Axis, 19... Bracket, 20... Axis, 21...
Spring, 21a...one end, 21b...other end,
I...kiabu, b...rear wall, c...shisha, ni...connecting pin.

Claims (1)

[Scope of utility model registration request] The rod 16 moves forward and backward by the rotation of the lever 17.
The front link 3 and the rear link 4 rotate in conjunction with the
A main hook 7 is supported by a main shaft 2 installed on a bracket 1, and a main hook 7 is rotatably supported by a front link 3 and a rear link 4. One end 12a of the stopper 12 is rotatably supported on a freely provided pin 10, and the tip 11 of the sub hook 11 is attached to the pin 10.
Further, the stopper 12 is rotatably supported on a pin 13 installed on the bracket 1, and the sub hook 11 is fixed to an outer cylinder 15 rotatably fitted on the pin 13. A cab lock device for a tail cab type freight vehicle, characterized in that a main hook 7 and a sub hook 11 are opened/closed and locked/unlocked by rotation of a lever 17.