JP2603272B2 - Locking device for tilt cabin vehicles - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a lock device for a tilt cabin vehicle.

(Prior Art) Generally, as shown in Japanese Utility Model Laid-Open No. 60-6681, a tilt cabin vehicle has a cabin rotatably supported with respect to a body frame for engine inspection and the like. ,
The cabin is biased in a tilt-up manner. When driving such a tilt cabin vehicle, the vehicle is locked to the vehicle body frame via a lock device against the urging force.

As the lock device, a main hook capable of holding the locking member to the vehicle body frame via rubber and rigidly fixing the engaging member, and locking the locking member to the locking member in a cabin; A lock handle that is linked to a hook to lock and release the main hook with respect to the locking member and a safety hook that can be engaged with the engaging member are being developed.

In this lock device, when the cabin is tilted down against the urging force of the tilt-up method, first, the safety hook engages with the engaging member so as to regulate the tilt-up of the cabin. The main hook is held at the regular lock position where the main hook can be locked to the locking member. For this reason, if the lock operation is performed by the lock handle in this state, the main hook is locked to the locking member.
The cabin is locked in the proper lock position by the main hook and the safety hook.

By the way, in the lock device, the locking member is
It is held on the vehicle body frame via a relatively small elastic rubber. For this reason, it has been recognized that the stroke in which the main hook and the locking member are displaced and moved in the locked state is relatively small, and is not sufficient from the viewpoint of ride comfort.

For this reason, in order to improve ride comfort, the locking member is held on the vehicle body frame via a damper or a rubber having large expansion and contraction, whereby the main hook and the locking member are displaced and moved in the locked state. Locking devices have been proposed that increase the stroke. In this case, in this locking device, when the stroke of the main hook and the locking member that is displaced and moved in the locked state increases, the safety hook also moves in the vertical direction in accordance with the stroke. Is required to be engaged so that displacement movement of a predetermined stroke with respect to the engaging member is allowed when the cabin is locked at the regular lock position.

(Problems to be Solved by the Invention) However, in the above-described locking device, although no problem occurs in the locked state where the main hook and the locking member are locked, when the locking is performed, In the locked state, the safety hook is engaged with the engaging member such that displacement movement of a predetermined stroke is allowed, so that the cabin is tilted down against the urging force in the tilt-up direction, and the safety hook is lowered. When the hook is engaged with the engagement member, the cabin does not reach the regular lock position and is slightly inclined toward the front of the vehicle body. For this reason, even if the locking operation is performed by the lock handle in this state to lock the main hook to the light-sighted member, the main hook is shifted with respect to the locking position of the locking member. The hook cannot be locked to the locking member.

In addition, some tilt cabin vehicles have a wide vehicle whose vehicle width is widened outward in the vehicle width direction as compared with the standard vehicle.In this wide vehicle, the cabin is widened outward in the vehicle width direction, while the body frame As for, there is a tendency that the same vehicle as the standard vehicle is used from the viewpoint of sharing with the so-called standard vehicle. In this case, it is necessary to arrange the lock handle, the safety hook, and the like in the lock device outwardly in the vehicle width direction from the viewpoint of operability, so that the lock handle and the safety hook can be easily operated. When a safety hook or the like is arranged, the safety hook is the same as that of the standard vehicle, so that the engaging member is set to the vehicle width in order to enable engagement with the engaging member. It is necessary to extend outward in the direction.

However, in the case of the above-described structure, the distance between the engagement position of the engagement member and the engagement position of the engagement member is increased, so that the front wheel is jacked up and the cabin itself is mounted on the body frame. When the safety hook is engaged with the engaging member, the main hook is largely displaced with respect to the locking member even if the screw is slightly applied. May not be locked to the locking member.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a locking device with improved riding comfort, in which a main hook is easily attached to a locking member when a cabin is locked in a regular locking position. And ensure that the main hook cannot be locked to the locking member even if the tilt cabin wheel is wide and the cabin is twisted with respect to the body frame. It is to suppress as much as possible.

(Means for Solving the Problems, Function) In order to achieve the above object, according to the present invention, the cabin is urged in the tilt-up direction by the body frame to be rotatably supported, and the cabin is supported by the body frame. The locking member is held so as to be displaceable in the vertical direction and the engaging member is rigidly fixed. The cabin is linked to a main hook lockable to the locking member and the main hook. A lock handle for locking and releasing the main hook with respect to the locking member; a first safety hook; and a first safety hook disposed inward in the vehicle width direction with respect to the first safety hook. A second safety hook that is linked to a safety hook and is engaged and arranged to allow a displacement movement of a predetermined stroke with respect to the engagement member when the main hook is locked by the locking member; A first set hook linked to the lock handle and swinging in accordance with the swing of the lock handle; and a first set hook disposed inward in the vehicle width direction with respect to the first set hook and When the main hook is disengaged from the locking member when the cabin is tilted down to the regular lock position, the engaging member restricts the cabin from tilting up. And a second set hook that is set to be in a non-engaged state with the engaging member when the main hook is in a locked state with the locking member. A locking device for a tilt cabin vehicle, wherein the locking device is supported.

With the above-described configuration, when the main hook is in the locked state with respect to the locking member, that is, at the time of locking, the second set hook is disengaged with the engaging member, and the second safety hook is formed. When the cabin is locked in the proper lock position while the cabin is tilted down, the second set hook can be tilted up. The cabin is engaged with the engaging member so as to restrict the cabin, and the cabin is held at the regular lock position so that the main hook can be locked to the locking member.
For this reason, in the lock device, when locking,
The lock handle allows the main hook to be easily and reliably locked to the locking member.

Further, since the first set hook and the second set hook linked to the first set hook are provided in the vehicle width direction, even if the vehicle is a wide vehicle, the first set hook is engaged with the set hook. It is not necessary to extend the engagement position of the engagement member far from the light-sighted member, and the engagement position of the engagement member and the engagement position of the engagement member can be kept as short as possible. For this reason, even if the tilt cabin wheel is a wide vehicle and the cabin is twisted with respect to the body frame, the locking member remains in the state where the second set hook is engaged with the engaging member. Of the main hook with respect to the locking member can be reduced as much as possible, and it is possible to extremely reduce the possibility that the main hook cannot be locked to the locking member by operating the lock handle.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

1 to 7, reference numeral 1 denotes a wide-body tilt cabin vehicle. The tilt cabin vehicle 1 is provided with a cabin 2 wider than a standard vehicle at a front side of a vehicle body, and a rear side of the cabin 2 is provided at a rear side of the cabin 2. A carrier 3 is provided. Cabin 2
Is a body frame (hereinafter, referred to as a frame) of the same standard as a standard vehicle extending in the vehicle longitudinal direction on both sides in the vehicle width direction.
The cabin 2 is supported so as to be rotatable around a pivot point P shown in FIG. 1, and the cabin 2 is biased in the tilt-up direction. In FIG. 7, 2a is a pillar outer forming a cabin outer plate, 2b is a pillar inner, 2c is a reinforcement extending in the vehicle width direction between the pillar inners 2b, and 2d is a back panel forming a rear surface of the cabin 2 in FIG. It is.

A lock device 5 is provided between the cabin 2 and the carrier 3. 2 to 7, the brackets 6 are respectively attached to the frames 4, and the wedge members 7 are provided above the brackets 6, respectively. Wedge member 7
Extend longer in the vehicle width direction (left-right direction in FIG. 3) than in the vehicle front-rear direction, and both ends in the vehicle width direction are curved upward. A guide plate 8 is provided on the lower surface of the wedge member 7.
Are provided downward, and the distal end portion of the guide plate 8 penetrates through the upper portion of the bracket 6 so as to be vertically displaceable and enters the inside of the bracket 6. In the present embodiment, the distal end of the guide plate 8 and the bracket 6 are connected via a damper 9 to improve ride comfort.
One end of a swing member 10 is connected to the tip of the guide plate 8,
The other end of the swing member 10 is swingably supported by the bracket 6. Thereby, the wedge member 7 can be displaced and moved in the vertical direction. The wedge member 7 is provided with elastic members 11 such as rubber at both ends thereof, and a plate-like locking member 12 is provided upright at an intermediate portion between the two elastic members 11. The locking member 12 is disposed so that its plate surface faces the vehicle width direction, and the locking member 12 is formed with a locking hole 13 penetrating in the vehicle width direction.

A striker 14 as an engagement member is rigidly fixed to one of the brackets 6 on the outer side in the vehicle width direction. The striker 14 extends outward in the vehicle width direction along the lower surface of the wedge member 7, and an engagement portion 14a extending in the vehicle front-rear direction is formed at a tip end thereof.

On the other hand, cab mount brackets 15 are fixed to both ends of the lower part of the cabin 2 in the vehicle width direction in the reinforcement 2c and the like. Each cab mount bracket 15 is arranged so as to be able to move toward each of the wedge members 7 as the cabin 2 is tilted down. The locking member 12 is provided below the cab mount bracket 15. When the cabin 2 is tilted down, the cab mount brackets 15 penetrate the locking members 12 of the wedge members 7 so that the elastic members 11 on the respective wedge members 7 can be inserted.
Is to be accepted by

Each cab mount bracket 15 has a hook mechanism 17
Are supported respectively. Both hook mechanisms 17 have the same configuration, and each hook mechanism 17 is provided with a holding plate 18.
And a main hook 19 having a dogleg shape. The holding plate 18 has a pair of opposing side surfaces 18a.
And a bottom portion 18b connecting the pair of side portions 18a are formed in a substantially U-shaped cross section, and the pair of side portions 18a are
Support shaft fixed to cab mount bracket 15
It is rotatably supported by 20. The main hook 19 is arranged between the bottom 18b of the holding plate 18 and the support shaft 20, and one end of the main hook 19 is connected to a pair of side surfaces 18a of the holding plate 18 by pins 21a. The other end of the main hook 19 is formed as a hook portion 19a to be locked in the locking hole 13 of the locking member 12.

A support plate 22 is fixed to the cabin 2 on the outer side in the vehicle width direction with respect to one cab mount bracket (the left side in FIG. 2). A support shaft 23 is rotatably supported by the support plate 22, a lock handle 24 is fixed to one end of the support shaft 23, and a cam 25 is fixed to the other end of the support shaft 23. I have. Lock handle 24
Each of the pins 21 is linked to each other by connecting members 26 and 27, and each holding plate 18 rotates around each support shaft 20 in response to the swing operation of the lock handle 24, and each of the holding plates The main hook 19 rotates in accordance with the rotation of 18. That is, when the cabin 2 is located at the regular lock position, the hook portion 19a of the main hook 19 can be locked by swinging the lock handle 24 downward.
3, the hook portion 19a of the main hook 19 is detached from the locking hole 13 when the lock handle 24 is swung upward. The cam 25 has a substantially C-shape as shown in FIG.
5b.

A safety hook lever 28 as a first safety hook is supported on the support shaft 23 so as to be relatively rotatable. The rotation of the safety hook lever 28 in the counterclockwise direction in FIG.
a, and the safety hook lever 2
8 is provided so as to extend downward. A torsion spring S is interposed between the safety hook lever 28 and the lock handle 24. The urging force of the spring S causes the safety hook lever 28 to move the safety hook
The lock handle 24 is urged in a direction away from the safety hook lever 28.

A first set hook 29 is supported by the safety hook lever 28 via a pin 30 so as to be relatively rotatable.
The first set hook 29 has a hook portion 29a and a cam abutment portion 29b centered on a pivot point, and the first set hook 29
It is to be rotated about the pin 30 by the cam action of 25.

An auxiliary plate 40 is fixed to the cabin 2 between the one cab mount bracket and the support plate 22, and a second safety hook 41 is rotatably supported on the auxiliary plate 40. I have. The second safety hook 41 and the safety hook lever 28 are connected via a connecting member 42, and the second safety hook 41 is connected to the safety hook lever 28 in accordance with the turning operation of the safety hook lever 28. And the safety hook lever 28 is moved in
a, the second safety hook 41
The hook portion 41a is arranged such that the engaging portion 14a of the striker 14 faces the moving area of the hook portion 41a when the cabin 2 is tilted down. The hook portion 41a of the second safety hook 41 is connected to the main hook 1
When the lock 9 is locked to the lock member 12, the second
As shown in the figure, the striker 14 is to be positioned below the engaging portion 14a of the striker 14 so that displacement movement of the predetermined stroke 1 is allowed, and the predetermined stroke 1 is set in consideration of ride comfort. Have been.

A second set hook 43 is supported by the second safety hook 41 so as to be relatively rotatable. The second set hook 43 and the first set hook 29 are connected to a connecting member 44.
The second set hook 43 is connected to the first set hook 29 according to the rotation of the first set hook 29.
It is to move almost parallel to 29. Accordingly, when the cabin 2 is located at the regular lock position, the lock handle 24 does not lock the main hook 19 in the lock hole 13 of the lock member 12, that is, when the lock handle 24 is at the upper position. The hook portion 43a of the second set hook 43 is engaged with the engaging portion 14a of the striker 14 by a series of actions of the cam portion 25a of the cam 25, the first set hook 29, and the connecting member 44 (FIG. 6). When the lock handle 24 locks the main hook 19 in the lock hole 13 of the lock member 12, that is, when the lock handle 24 is at the lower position,
The hook portion 43a of the second set hook 43 is the cam portion 1 of the cam 25.
5b, the first set hook 29, and the connecting member 44 are set so as to be separated from the engaging portion 14a of the striker 14 by a series of actions (see FIG. 2).

A substantially L-shaped handle lock lever 31 is rotatably supported on the support plate 22 at a substantially intermediate portion thereof. One end of the handle lock lever 31 is an engagement portion, and a receiving member 32 with which the engagement portion is engaged is fixed to the lock handle 24. The locking and unlocking of the lock handle 24 is performed by engaging and disengaging the engaging portion of the handle lock lever 31 and the receiving member 32 based on the turning operation of the handle lock lever 31. Reference numeral 33 denotes a lever portion for rotating the handle lock lever 31.

 Next, the operation of the lock device 5 will be described.

When locking the cabin 2 from the tilt-up state to the proper lock position.

At this time, the lock handle 24 is
The hook portion 43a of the second set hook 43 is located at the upper position by the urging force of the torsion spring S interposed between the safety hook lever 24 and the safety hook lever 28.
a, by the action of the first set hook 29 and the connecting member 44, it is pushed inward in the vehicle width direction in the same manner as the hook portion 41a of the second safety hook 41, and the cabin 2 is tilted down. The engaging portion 14a of the striker 14 is to be located in the moving area of the hook portions 43a and 41a.

If the cabin 2 is tilted down in this state,
Each cab mount bracket 15 comes into contact with each wedge member 7, and the hook portion 43a of the second set hook 43 engages with the engaging portion 14a following the hook portion 41a. At this time, the second safety hook 41
The hook portion 41a is engaged with the engaging portion 14a of the striker 14 so as to allow a displacement movement of a predetermined stroke 1 while the urging force of the torsion spring S is applied to the first portion via the cam portion 25a. Acting on the cam contact portion 29b of the set hook 29, the biasing force is transmitted to the second set hook 43 via the connecting member 44, and the hook portion 43a of the second set hook 43 is engaged with the engaging portion 14a. Will be firmly engaged. As a result, the cabin 2 is in the proper locked position as shown in FIG.
Is held.

When the lock handle 24 is lowered in this state, the main hook 19 is locked in the locking hole 13 of the locking member 12, and accordingly, the cam portion 25b is moved to the first set hook 29.
The first set hook 29 is rotated clockwise in FIG. 2 by contacting the cam contact portion 29b of the first set hook.
The rotation of 29 is transmitted to the second set hook 43 via the connecting member 44, and the hook portion 43a of the second set hook 43 is separated from the engaging portion 14a and Will be released. Thereafter, when the lock handle 24 is locked by the handle lock lever 31, the state shown in FIG. 2 is maintained. As a result, a predetermined stroke 1 is secured between the hook portion 41a and the engaging portion 14a, and the main hook 19 and the engaging member 12 are displaced by the predetermined stroke by the action of the damper 9 in the locked state. And the ride comfort will be improved.

When the cabin 2 is unlocked from the regular lock position.

In this case, first, the lock handle 24 is unlocked by the handle lock lever 31, and then the lock handle 24 and the safety hook lever 28 are moved upward about the support shaft 23, that is, clockwise in FIG. May be rotated. That is, when the lock handle 24 is rotated upward, the locking relationship between the main hook 19 and the locking member 12 is released, while the second set hook
43 of the hook portion 43a is the cam portion 25a, the first set hook 29,
The connection member 44 acts to engage with the engagement portion 14a, but the safety hook lever 28 and the second safety hook 41 are rotated upward, so that the hook portion 41a of the second safety hook 41 is Of course, the first and second set hooks 29 and 43 themselves also move outward in the vehicle width direction from below the engaging portion 14a, and the second set hooks also move. This prevents the hook portion 43a of the 43 from engaging with the engaging portion 14a. As a result, all the lock relations between the cabin 2 and the frame 4 are released, and the cabin 2 is tilted up in the same direction by the urging force urged in the tilt-up direction.

Therefore, in the lock device 5, at the time of locking, a predetermined stroke l is secured between the hook portion 41a of the second safety hook 41 and the engaging portion 14a of the striker 14, thereby improving ride comfort. On the other hand, when locking the cabin in the regular lock position, the cabin can be held in the regular lock position based on the second set hook 43. Therefore, the main hook 19 can be easily and reliably locked to the locking member 12 even when the cabin 2 is locked in the normal locking position even in the locking device having improved riding comfort as described above. Become.

Further, in order to supplement the width of the wide vehicle, a safety hook lever 28, a second safety hook 41, and first and second set hooks 29 and 43 are provided in the vehicle width direction, and these are connected as described above. Since it is configured to be connected via 42 and 44, it is not necessary to extend the engaging portion 14a of the striker 14 toward the lock handle 24, and the engaging portion 14a and the locking member 1 are not required.
2 can be kept as short as possible. For this reason, even if the front wheel is jacked up and the cabin 2 is twisted with respect to the frame 4, the hook portion 43 a of the second set hook 43 is locked by the locking member 14.
When the main hook 19 is engaged with the engaging portion 14a, the displacement of the main hook 19 with respect to the locking hole 13 of the locking member 12 can be extremely small. As a result, the possibility that the main hook 19 cannot be locked in the locking hole 13 due to the operation of the lock handle 24 is extremely reduced.

(Effects of the Invention) As described above, the present invention relates to the above-described locking device having improved riding comfort, in which the main hook is easily and reliably engaged with the locking member when the cabin is locked in the proper locking position. Can be stopped.

Even if the tilt cabin vehicle is a wide vehicle and the cabin is twisted with respect to the body frame, the main hook is operated by the lock handle after the second set hook is engaged with the engaging member. Can not be locked to the locking member.

[Brief description of the drawings]

1 is a front view showing a tilt cabin vehicle, FIG. 2 is an enlarged explanatory view showing a lock device according to an embodiment of the present invention, FIG. 3 is a front view showing a part of FIG. 2 in detail, 4 is a sectional view taken along line AA of FIG. 2, FIG. 5 is a left side view of FIG. 2, FIG. 6 is a simplified operation state diagram of FIG. 2, and FIG. 7 is CC of FIG. It is a line sectional view. 1: tilt cabin car 2: cabin 4: frame 6: locking device 12: locking member 14: striker 19: main hook 24: lock handle 28: safety hook lever 29: first safety hook 41: first safety hook 43: Second second set hook l: Predetermined stroke

Claims (1)

(57) [Claims] A cabin is urged in a tilt-up direction by a body frame and is rotatably supported. A locking member is held by the body frame so as to be vertically displaceable and an engaging member is rigid. A main hook lockable to the locking member, a lock handle linked to the main hook to lock and release the main hook with respect to the locking member, A first safety hook and the first safety hook, which are disposed inward in the vehicle width direction and are linked to the first safety hook when the main hook is locked by the locking member. A second safety hook engaged and arranged to allow displacement of a predetermined stroke with respect to the joining member; and a second safety hook linked to the lock handle and swinging in accordance with the swing of the lock handle. A first set hook, which is disposed inward in the vehicle width direction with respect to the first set hook, is linked to the first set hook, and the cabin is tilted down to a regular lock position. When the main hook is in a disengaged state with respect to the locking member, the main hook is engaged with the engaging member so as to restrict tilt-up of the cabin, and the main hook is in a locked state with respect to the locking member. And a second set hook, which is sometimes set to be in a non-engaged state with respect to the engagement member, is supported.