JP3954293B2 - Mechanical carb lock device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lock device that is provided at the lower back of a tilt cab of a vehicle and locks / unlocks the tilt cab, and more particularly to a mechanical cab lock lock device that can improve safety.
[0002]
[Prior art]
As shown in FIG. 9, a mechanical cab lock device 1 a is disposed at the lower end of the back panel 23 of the tilt cab 22. As shown in the figure, the mechanical cab lock lock device 1a includes a pair of lock assemblies 3a, 3a disposed on the left and right sides of the lower end of the back panel 23, and an operation lever mechanism 4a for operating a main hook 5a of the lock assemblies 3a, 3a. And a lock close 2a for restraining the operation of the operation lever mechanism 4a. The tilt cab 22 is locked by engaging the main hook 5a with the anchor 6 provided on the chassis frame (not shown), and the unlocking is performed after releasing the restraint of the operation lever mechanism 4a by the lock close 2a. The main lever 5a is rotated by the operation lever mechanism 4a.
[0003]
As shown in FIGS. 7, 8, and 9, in the prior art, the lock close 2a is arranged to be engaged with the operation lever 14a of the operation lever mechanism 4a, and the lock close 2a is operated by operating the lock closing operation rod 20a. 2a rotates about the pin 26, the restriction of the operation lever mechanism 4a is released, and then the main hook 5a is operated by operating the operation lever 14a of the operation lever mechanism 4a. The operation lever 14a and the lock close 2a of the operation lever mechanism 4a are arranged on the side of the lower end of the back surface of the tilt cab 22 as shown in FIG. This is to improve operability.
[0004]
On the other hand, there are a number of known techniques related to the carbyllock device, and examples thereof include JP-A-8-216933, JP-A-8-198147, and JP-A-8-188181. Japanese Patent Laid-Open No. 8-216933 discloses a cab-lock vehicle cab-lock operating device that connects a hook provided on a cab side and an operating lever for locking and unlocking an anchor on a vehicle body side. It is comprised from a connection lock, It has the characteristics in providing the inversion mechanism which operate | moves the said connection rod in a reverse direction between the said hook and the said connection rod. This reversing mechanism allows the operation lever to be mounted on either the left or right side of the cab, thereby expanding the specifications.
[0005]
Japanese Patent Laid-Open No. Hei 8-1981147 discloses a cab lock device in which a hook on a cab side, which is unlocked and released from engagement with an engaged portion of a rear arch (vehicle body side), is moved to a predetermined rotational position. It is characterized by providing a latch to be held in the housing. By holding the hook by the latch, the hook and the engaged portion of the rear arch are correctly engaged when the cab is locked. Japanese Patent Laid-Open No. Hei 8-188181 discloses a cab lock device that is provided with a holding arm that receives and holds an operation handle in a locked state, and between the holding portion attached to the side portion of the operation handle and the holding arm. A stopper pin for preventing the holding portion from being detached is provided. By providing this stopper pin, it is possible to reliably hold the lock position of the operation handle, and the reliability of locking / unlocking can be improved.
[0006]
[Problems to be solved by the invention]
The operation lever 14a and the lock close 2a of the operation lever mechanism 4a of the conventional mechanical cab lock locking device 1a shown in FIGS. 7 to 9 are arranged on the side surface of the tilt cab 22 as described above. Therefore, if a burst such as a front wheel or a side contact of the cab occurs during traveling, the operation lever 14a or the lock close 2a attached to the operation lever 14a may be damaged. In addition, the above-mentioned various known techniques have their respective characteristics, but mainly for the purpose of locking reliability and locking / unlocking stability, etc., and ensuring safety such as operation levers and lock closings. It is not an emphasis.
[0007]
The present invention was invented in view of the above circumstances, and in particular, to provide a mechanical cab lock lock device that ensures the safety of lock closing when an external force is applied and ensures the reliability of lock / unlock operations. With the goal.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a lock assembly that holds a main hook that is detachably engaged with an anchor that is attached to the lower rear end of the cab and is fixed to the chassis frame, and operates the main hook. A lock device comprising an operation lever mechanism portion disposed on the back side surface of the cab and a lock close or the like that holds the main hook in a lock position, and the lock close of the lock device is locked with the lock. This constitutes a mechanical cab lock device provided in the assembly.
[0009]
The lock assembly that holds the main hook is disposed below the back of the cab and is located slightly away from the side of the cab. In the mechanical cab lock lock device of the present invention, a lock close is incorporated in the lock assembly. Therefore, even when an external force is applied to the side surface of the cab, no damage occurs in the lock close. As a result, safety can be ensured and the locking / unlocking reliability can be ensured.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a mechanical cab lock device of the present invention will be described in detail below with reference to the drawings. As shown in FIG. 1, the mechanical cab lock device 1 includes a pair of lock assemblies 3 and 3 that are disposed at the lower end of the back panel 23 of the tilt cab 22 shown in FIG. It comprises an operation lever mechanism 4 for operating this, a lock close 2 for holding the main hook 5 in the lock position, and the like. The main hook 5 is engaged with and detached from an anchor 6 provided on the chassis frame (not shown) side to lock and unlock the tilt cab 22.
[0011]
As shown in FIG. 2, the lock assembly 3 includes a base base 7 fixed to the lower end of the back panel 23 (FIG. 9), and a rotary plate 9 that is supported by the base base 7 so as to be rotatable about a fulcrum 8. Become. The base table 7 includes a front base table 7 (referred to as a front surface side in the drawing) and a rear base table 7a disposed at an appropriate distance from the base table 7. The rotating plate 9 is disposed on the back surface of the base base 7 on the front side. A pin 10 and a pin 12 are provided on the peripheral side of the rotating plate 9, the pin 10 protrudes forward, a rod 16 and a rod 11 are connected to the front end side of the pin 10, and a main hook 5 is connected to the pin 12. Are connected at one end. The rotating plate 9 is disposed on the rear side of the rods 11 and 16. The main hook 5 is disposed on the back side of the rotating plate 9 and on the front side of the rear base base 7a. The rod 16 is connected to an operation lever mechanism section 4 which will be described later, and the rod 11 is installed to connect the rotating plates 9 and 9 of the pair of lock assemblies 3 and 3. Further, as described above, the main hook 5 is composed of a substantially semi-arc-shaped member that connects one end side to the pin 12 and forms the engaging portion 5 ′ engaged with the anchor 6 on the other end side.
[0012]
The operation lever mechanism unit 4 is installed on the tilt cab 22 side between an operation lever 14 supported to be rotatable about a support pin 13, a pin 15 at an end of the operation lever 14, and a pin 10 of the rotation plate 9. It consists of a rod 16 and the like. With the structure described above, the rod 16 is moved by gripping the gripping portion 17 of the operation lever 14 and rotating the operation lever 14 around the support pin 13, whereby the rotation plate 9 rotates about the fulcrum 8. Accordingly, the main hook 5 rotates. At the same time, another rotating plate 9 is rotated via the rod 11, and the main hook 5 is also rotated.
[0013]
The lock close 2 is disposed on the surface side of the base base 7 of the lock assembly 3 and is composed of a lever-like member that rotates around a pin 24 fixed to the base base 7. A locking groove 19 that is detachably engaged is formed, and one end side of the lock closing operation rod 20 is connected to the locking hole 18 on the other end side. As shown in FIG. 1, the other end side of the lock closing operation rod 20 is extended to the operation lever 14 side, and a collar portion 21 that is easy to operate is bent. As shown in FIG. 2, a spring 25 is inserted into the pin 24 of the lock close 2, one end of the spring 25 is engaged with the edge of the base base 7 on the front side, and the other end of the lock close 2. The locking groove 19 of the lock close 2 that is engaged with the edge is pressed toward the pin 10 side.
[0014]
Next, the action of the mechanical cablock device 1 of the present embodiment will be described with reference to FIGS. 1 and 2 show the engaged state of each part of the mechanical cab lock device 1 in a state where the tilt cab 22 (FIG. 9) is locked. In this case, the locking groove 19 of the lock close 2 is engaged with the pin 10 to restrain the rotation of the rotating plate 9. As shown in FIG. 6, even if the pressing force F is applied from the rod 16, the component force -F "of F acts on the pin 24. For this reason, the lock close 2 cannot be rotated around the pin 24. The operation lever mechanism 4 cannot be operated, the main hook 5 is held in a locked state, and the tilt cab 22 is fixed to the chassis frame side.
[0015]
When the tilt cab 22 is tilted, first, the collar portion 21 of the lock closing operation rod 20 is pulled, and the lock close 2 is rotated around the pin 24 as shown in FIG. As a result, the engagement between the locking groove 19 and the pin 10 is released, and the rotating plate 9 can rotate about the fulcrum 8. In this state, when the operation lever 14 is rotated around the support pin 13, the rotation plate 9 is rotated around the fulcrum 8 via the rod 16, and accordingly, the main hook 5 is supported via the pin 12. As shown in FIG. 4, the main hook 5 is further rotated around the fulcrum 8 as the center of rotation, and is pushed into the locking portion 5 ′. And the anchor 6 are disengaged. At the same time, the other rotating plate 9 rotates around the fulcrum 8 via the rod 11, and the engagement between the locking portion 5 ′ of the main hook 5 and the anchor 6 is released. As a result, the tilt cab 22 enters a free state and is tilted by a tilt means (not shown).
[0016]
As described above, in the case of the mechanical cab lock lock device 1 according to the present embodiment, the lock close 2 is disposed in the lock assembly 3. For this reason, even if a trouble occurs in which an external force acts on the side surface of the vehicle, the lock close 2 is not affected by any external force and the lock close 2 is not damaged and can always exhibit its function. As a result, safety can be improved as compared with the prior art. In addition, in this Embodiment, the assembly position of the lock close 2 is devised, and it does not require a special member compared with a prior art, and can be implemented simply and cheaply.
[0017]
【The invention's effect】
According to the mechanical cab lock lock device of the present invention, the lock close which is one of the most important members related to the lock / unlock of the cab is protected from damage caused by external force, and the safety is improved. Secure cab lock / unlock.
[Brief description of the drawings]
FIG. 1 is a rear view showing the overall structure of a mechanical cab lock device of the present invention.
2 is an enlarged partial rear view showing a detailed structure around a lock close in FIG. 1;
FIG. 3 is a partial rear view for explaining the unlocking operation of the main hook of the mechanical carb lock device of the present invention.
FIG. 4 is a partial rear view for explaining the unlocking operation of the main hook of the mechanical carb lock device of the present invention.
FIG. 5 is a partial rear view for explaining the unlocking operation of the main hook of the mechanical carb lock device of the present invention.
FIG. 6 is a partial rear view for explaining the certainty of lock of lock closing.
FIG. 7 is a rear view showing the overall structure of a mechanical cab lock device in the prior art.
8 is an enlarged partial rear view showing a detailed structure around a lock close in FIG. 7;
FIG. 9 is a rear view showing an outline of the structure of the rear side of a tilt cab equipped with a conventional mechanical cab lock device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Mechanical carb lock device 2 Lock close 3 Lock assembly 4 Operation lever mechanism part 5 Main hook 5 'Locking part 6 Anchor 7 Base base 7a Base base 8 Supporting point 9 Rotating plate 10 Pin 11 Rod 12 Pin 13 Support pin 14 Operation Lever 15 Pin 16 Rod 17 Gripping part 18 Locking hole 19 Locking groove 20 Lock-close operating rod 21 Hook 22 Tilt cab 23 Back panel 24 Pin 25 Spring

Claims (1)

A lock assembly that holds a main hook that is removably engaged with an anchor that is attached to the lower rear end of the cab and is fixed to the chassis frame;
An operation lever mechanism disposed on the back side of the cab to operate the main hook;
A lock device composed of a lock close or the like that holds the main hook in a locked position,
The lock assembly includes a base that is fixed to the cab, and a rotating plate that is rotatably supported with respect to the base.
The lock close is rotatably supported with respect to the base,
The main hook is rotatably connected to the rotating plate,
The rotating plate has a protrusion connected to the operation lever mechanism.
The lock close has an engagement portion that can be engaged with the protrusion of the rotating plate,
When the main hook and the anchor are engaged, the lock close rotates with respect to the base, and the engagement portion engages with the protrusion, so that the rotation of the rotating plate is restricted. A mechanical cab lock lock device in which a main hook is held in a locked position .

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