JPS5941906Y2 - Tail cab locking device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mechanism for tailing a tilt cabin like a cab-over type vehicle, and particularly to a locking device thereof.

Conventionally, in contrast to the operation handle of the lock mechanism that locks the tilt cabin to the chassis frame side, a lock lever is used to lock the operation handle in the locked position.
A safety device is provided in which the locking mechanism cannot be unlocked by operating the operating handle unless the lock lever is operated to release the operating handle outside the cab and the operating handle is unlocked.

However, conventional lock levers can only be operated from outside the cab, and it is not possible to confirm from inside the cab whether or not the lock lever has been operated to lock the operating handle. If you happen to drive with the lock lever in the unlocked state, there is a problem that it will not function as a safety device.

Furthermore, there is also known a device that can be unlocked from inside the vehicle (see Japanese Utility Model Application No. 54-89717).

However, with this device, there is a concern that the operation knob may be operated by mistake.

The present invention was made in view of such problems, and
Not only can you check whether the lock lever is locked or not inside the cab, but you can always lock and unlock the lock lever from inside the cab, as well as the indoor lock knob. A blocking member is provided to keep the lock lever in the locked state, and the lock lever can only be activated by operation inside the cab.
The basic objective is to provide a locking device for a tilt cab that can be used to unlock a tilt cab.

Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments.

In Fig. 1, 1 is a floor frame of the tilt cabin, 2 is a chassis frame, and both frames 1 and 2 are connected to a support base 4 supported by a bracket 3 fixed to the chassis frame 2, from the cabin bottom frame 1. With the cab mount bracket 5 protruding downward aligned, a striker 6 made of one bolt provided at the center of the support pedestal 4 is engaged with the 17th hook 8 of the locking mechanism 7 provided on the cabin bottom frame 1 side. By matching them together, they are mutually locked.

10 is a support plate 12 fixed between the side frame 11 on the cabin side and the cab mount bracket 5. The supporting plate 12 is fixed between the side frame 11 on the cabin side and the cab mount bracket 5. The operating handle 15 of the locking mechanism is swingable and is an operating rod whose one end is connected to the free end of the lever portion 10a of the operating handle 10 by a pin 16.
The other end of the holding plate 1γ is pivotally connected to the base end of the seventeenth hook 8 and one end of a holding plate 1γ that holds the seventeenth hook 8 in its locked position so that the lock does not come off.

This holding plate 1r is attached to the cab mount bracket 5
It is hinge-supported by a rotating shaft 19 on a support plate 18 that is provided between the two.

Note that 20 is a connecting rod for transmitting the movement of the operating handle 10 to the other lock mechanism 7'.

Further, reference numeral 21 denotes a safety foot whose upper end is swingably supported on the support shaft 13 of the operating handle 10, and which engages with the side of the support base 4 on the chassis frame 2 side by means of a hook 21a. It is a safety device against

Reference numeral 23 denotes a handle lock mechanism for locking the operating handle 10 in its lock position. 25, a hook lever 27 that locks a pin 26 protruding from the operating handle 10 to hold the operating handle 10 in a locked state, and a hook lever 27 that is suspended between the hook lever 27 and the safety foot 21 to lock the hook lever 27. A thoughtful spring 28 made of a helical spring that biases in the direction is connected by a rod 29 to a bent portion 25b (see FIG. 2) for unlocking the hook lever 27 provided on the lock lever 25, and the cab chamber 30 As shown in FIG. 3, a handle lock knob 31 that can be operated inside the vehicle, and a mounting plate 34 that has a gourd-shaped continuous hole 32 of various sizes in the center and are fixed to the cab floor 1 on the side. and a blocking member 37 consisting of a flat plate 36 hinged by a shaft 35.

This blocking member 37 has a pair of projecting pieces 37a and 37b that engage with a hook-shaped stopper 34a provided on the mounting plate 34 on the side opposite to the shaft 35.
By means of a spring 39 provided between the blocking member 37 and the blocking member 37, the blocking member 37 is normally held in the locked position shown in FIG. When turned to , the state is maintained.

When the blocking member 3T is in the lock position, the blocking member 3T
The small hole 32a of No. 7 is the base 31a of the handle lock knob 31.
In other words, the hook lever 2 is locked by the lock lever 25 so that the handle lock knob 31 cannot be pulled out.
The lock lever 25 itself is held in a locked state so that the unlocking operation of step 7 cannot be performed.

Therefore, in order to unlock the operating handle 10, first, as shown in FIG. The handle lock knob 31 is brought into alignment with the base 31a of the lock knob 31 so that the handle lock knob 31 can be pulled out and operated, and the handle lock lever 25 connected via the rod 29 is swung around the hour hand as shown in FIG. to release the lock of the operating handle 10 by the hook lever 2T.

Note that when the blocking member 37 is held in the unlocked position, the operating handle 10 can be unlocked by operating the handle lock lever 25 outside the cab.

Then, when the hook lever 21 unlocks the operating handle 10, the hook lever 27 moves to the operating handle 1.
The thoughtful spring 2 is connected to the rising edge 10b provided at 0.
Inverted by 8.

When the operating handle 10 is manually operated to the unlock position at the unlocked stage, the locking mechanisms 7, 1' linked to the operating handle 10 are unlocked, and at this stage,
When the hook 21a of the safety hook 21 is removed, the cab chamber 30 can be tailed for the first time.

In this case, the rising edge 10b of the operating handle 10 pushes the upper edge of the hook lever 21 in the unlocked position to swing the hook lever 27 to the locking side, and the operating handle 10
When operating the lock, press the pin 26 of the operating handle 10.
automatically re-engages with the hook lever 2T and is held in the locked state.

The operation handle 10 is locked and the locking mechanism T is activated.

After locking the cab chamber 30 to the chassis frame 1 side by T', hooking the safety foot 21 and operating the blocking member 3T to the lock position,
The operating handle 10 will be reliably held in the locked state.

As described above, the present invention includes an indoor lock knob that interlocks with the outdoor lock lever that prevents the lock handle from being operated in the release direction, and a blocking member that holds the indoor lock knob in the locked state. To provide a locking device for a tilt cab characterized in that an indoor lock knob can be unlocked only from inside the cab.

According to the present invention, it is possible to check whether or not the lock handle for keeping the operation handle of the locking mechanism of the cab in the locked state is locked inside the cab, and it is also possible to perform the unlocking operation of the lock handle only inside the cab. Therefore, the lock handle can be operated safely without mistakes, and erroneous operations such as forgetting to lock the operating handle can be reliably prevented.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a tilt cab locking device according to an embodiment of the present invention, Fig. 2 is an exploded perspective view showing the relationship between the handle lock lever and the hook lever, and Figs. Locking of the blocking member viewed from the direction of arrow A in Figure 1,
FIG. 6 is a front view showing an unlocked state. 1...Cab floor, 2...Chassis frame, 6
... Striker, 8... First hook, 10... Operation handle, 25... Handle lock lever 126.
... Pin, 21 ... Hook lever, 31 ... Handle lock knob, 32 ... Gourd-shaped hole, 37 ... Blocking member.

Claims (2)

[Scope of utility model registration request] (1) In the tilt cab locking device, an indoor lock knob is provided inside the cab to lock and unlock the outdoor lock lever that prevents the lock handle from being operated in the release direction, and locks the indoor lock knob. 1. A locking device for a tilt cab, characterized in that a blocking member for holding the tilt cab in the unlocked state and the unlocked state is provided inside the cab, and the blocking member can be unlocked only from inside the cab. (2) The blocking member is formed of a flat plate with a gourd-shaped hole that is a series of large and small holes, and the flat plate is pivotably fixed to the cab floor, and the base of the lock knob is inserted into the large hole, and the flat plate is rotatably fixed to the cab floor. A locking device for a tilt cab according to claim 1, wherein the locking knob is held in a locked state by engaging the base of the locking knob with the small hole by rotation of the locking device.