JP3317235B2 - Tilt cab support stay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support stay for a tilt cab, and more particularly to an improvement in a stopper structure of the tilt cab.

[0002]

2. Description of the Related Art In a tilt cab type vehicle, as shown in FIG. 5, the rear end of the cab C can be flipped upward at the time of engine inspection or the like, and the entire cab C can be tilted forward. A support stay S 'as shown in the figure is used to hold the cab C in an inclined state.

FIG. 6 shows a detailed side view of the support stay S '. The support stay S ′ includes a lower arm 1 having a base end 11 rotatably connected to a bracket 3 fixed to a vehicle frame F (FIG. 5), and an upper arm 2 rotatably connected to a distal end 12 of the lower arm 1. ′ And the upper arm 2
A bracket 4 coupled to the lower surface of the cab C is rotatably provided at the tip 22 'of the'.

Both the lower arm 1 and the upper arm 2 'are formed by molding a long metal plate into a U-shaped cross section.
The base end 2 of the upper arm 2 ′ within the distal end 12 of the lower arm 1
1 'is inserted. The distal end 12 of the lower arm 1 is gradually narrowed toward the distal end in a side view, while the regulating lever 6 is provided in the base end 21 'of the upper arm 2'. The restricting lever 6 is rotatably supported by a shaft 53 provided between both side walls (front and rear sides of the paper) of the upper arm 2 ′, and a recess 61 formed on the lower side thereof has a distal end of the lower arm 1. It engages 12 edges. Accordingly, the relative bending and rotation of the lower arm 1 and the upper arm 2 ′ are restricted, and the arms 1, 2 ′ extend linearly and support the bottom surface of the cab C.

The restricting lever 6 is urged in a direction in which the recess 61 is engaged with the distal end edge of the lower arm 1 by a spring 7 disposed between the distal end 62 and the side wall 23 ′ of the upper arm 2 ′. Then, a shaft-shaped stopper body 91 is positioned in contact with the upper side of the regulating lever 6 so that the regulating lever 6 is not accidentally disengaged. The stopper body 91 is inserted into a through hole 242 provided in both side walls 24 '(only one is shown) of the upper arm 2'. Thus, the rotation of the regulating lever 6 in the counterclockwise direction is prevented, and the engagement between the recess 61 and the edge of the lower arm tip 12 cannot be released. In addition, at one end of the stopper body 91,
The distal end of a chain 92 having a proximal end fixed to the side wall 24 'of the upper arm 2' is connected.

When returning the cab C inclined forward to the original position, the stopper body 91 is pulled out from the through hole 242, and then the regulating lever 6 is rotated counterclockwise as shown by an arrow in FIG. The engagement between 61 and the edge of the lower arm tip 12 is released. Thereby, the lower arm 1 and the upper arm 2 'can be bent and rotated as shown by the chain line in FIG. 6, and the rear end of the cab C inclined forward can be lowered. When the stopper body 91 is not used, the stopper body 91 is inserted and stored in a through hole 234 provided in the side wall 23 'as shown by a chain line in FIG.

[0007]

By the way, in the above-mentioned conventional structure, each time the support stay S 'bends and extends, the stopper body 91 is provided.
There is a problem that the operation is troublesome because it is necessary to replace the through holes 242 to 234.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a tilt cab support stay that does not require complicated operation of a stopper body.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, a pair of arms (1) that are connected to bendable and that support a tilt cab (C) that is linearly positioned and tilts forward. A regulating lever (6) provided on one (2) of the arms and engaged with the other (1) of the arms to regulate the bending of both arms (1, 2) in the engaged state; A stopper body (8) that is provided at one of (2) and is rotated between the storage position and the advanced position, and prevents the operation of releasing the engagement of the regulating lever (6) at the advanced position. ,the above
The stopper body (8) has legs (81, 82) for rotation.
The main body (8) provided integrally with the legs (81, 82)
3 and 84), and the main body (8
4) comes into contact with the regulating lever (6) to release the engagement.
The main unit in the storage position
(83) is relatively small provided on one of the arms (2).
The opening (233) is elastically held in the opening (233).
I'm wearing

In the first aspect of the present invention, since the stopper body is rotated from the storage position to the advanced position to prevent the operation of releasing the engagement of the regulating lever, it is troublesome to replace the stopper body as in the related art. No special operation is required, and the bending and extension of the support stay accompanying the cab tilt can be performed smoothly. Also, make sure that the main body
Ensures that the disengagement operation of the regulating lever is prevented.
be able to. In addition, the stopper is
Will be retained.

According to the second aspect of the present invention, the main body is located at the advanced position.
(84) is a hole through which the regulating lever (6) passes
(231) elastically held in the upper half gap (232)
You.

In the third aspect of the present invention, the stopper (8) is configured such that the leg portions (81, 82) and the main body portions (83, 84) are formed by bending a single metal rod . In the second aspect of the present invention, the legs and the main body are easily realized by bending the metal bar .

The reference numerals in parentheses indicate the correspondence with specific means described in the embodiments described later.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an overall side view of a support stay S, the basic structure of which is the same as that of the conventional one described above. That is, the support stay S has a lower arm 1 and an upper arm 2, and the lower arm 1
A base end 11 is rotatably connected to a bracket 3 fixed to (FIG. 5) by a shaft body 51. Upper arm 2
Is pivotally connected to the distal end 12 of the lower arm 1 by a shaft body 52, and the bracket 4 coupled to the lower surface of the cab C (FIG. 5) is rotatably provided at the distal end 22 of the upper arm 2. .

Each of the lower arm 1 and the upper arm 2 is formed by bending a long metal plate into a U-shaped cross section.
The base end 21 of the upper arm 2 is located within the distal end 12 of the lower arm 1.
Is inserted. The distal end 12 of the lower arm 1 is gradually narrowed toward the distal end in a side view, while the regulating lever 6 is provided in the base end 21 of the upper arm 2.
The restricting lever 6 is rotatably supported by a shaft 53 provided between both side walls of the upper arm 2 (front and rear sides in the drawing), and a recess 61 formed in the lower side thereof has a distal end 12 of the lower arm 2. Engaging the rim. This restricts the lower arm 1 and the upper arm 2 from relatively bending and rotating, and the two arms 1 and 2 extend linearly and support the bottom surface of the cab C.

The restricting lever 6 is urged clockwise in FIG. 1 by the spring 7 disposed between the tip 62 and the side wall 23 of the upper arm 2 so that the recess 61 is engaged with the edge of the tip 12 of the lower arm 1. ing. The stopper 8 is positioned in contact with the upper side of the regulating lever 6 so that the regulating lever 6 is not accidentally disengaged.

FIG. 2 is an overall perspective view of the stopper body 8, and FIG. 3 is an overall side view thereof. The stopper body 8 is formed by bending a single metal rod, extends in parallel and has a tip 81.
Left and right leg portions 8 where 1,821 are bent in opposite directions, respectively
1 and 82 and a main body 8 extending in the vertical direction perpendicular to the legs 81 and 82 and having a central portion bulging to one side.
3, 84. The stopper body 8 has legs 81, 8
2 have through holes 241 and 25 formed in side walls 24 and 25 (FIGS. 1 and 4) of upper arm 2 respectively.
1 and is rotatable upward or downward as indicated by the arrow in FIG.

That is, when the stopper body 8 is rotated downward, as shown by the solid line in FIG. 4, the stopper body 8 is inserted into the upper half gap 232 through which the regulating lever 6 penetrates.
Of the regulating lever 6 at this advanced position. The main body 84 has a relatively narrow upper half gap 2
After passing through the upper arm 2, the elastic member returns to its original shape in the upper arm 2, presses against the upper side of the regulating lever 6, and does not fall out of the upper half gap 232 even when vibration is applied. Thereby, the operation of releasing the engagement of the regulating lever 6 in the direction indicated by the arrow in FIG. 4 is prevented, and the cab C in the forwardly inclined state is reliably supported by the two arms 1 and 2 located linearly.

When returning the cab C inclined forward to the original position, the main body 84 of the stopper body 8 is pulled out from the upper half gap 232, and the entire stopper body 8 is turned upward around the leg tips 811 and 821. Move. Then, as shown by a chain line in FIG. 4, the main body 83 of the stopper body 8 is inserted and housed in a hole 233 provided in the side wall 23 of the upper arm 2. The main body 83 returns to its original shape in the upper arm 2 due to its elasticity after passing through the relatively small hole 233, and is kept in the storage position without falling out of the hole 233 even when vibration is applied. When the main body 84 of the stopper body 8 is pulled out from the upper half gap 232, the regulating lever 6 can be rotated in the direction of the arrow in FIG.
1 is disengaged from the edge of the lower arm 12 and the lower arm 1 and the upper arm 2 can be relatively bent and rotated, as shown by the chain line in FIG. Can be lowered.

As described above, according to the support stay S of the present embodiment, the stopper body 8 can be moved from the storage position to the advanced position or vice versa by a simple rotation operation, and the troublesome operation is eliminated. You. Also, the stopper body 8
Can be easily manufactured by bending a metal rod, and its elasticity ensures that it is positioned in the hole 233 in the storage position or the upper half gap 232 in the advanced position.

The regulating lever 6 and the stopper 8 need not always be provided on the upper arm 2 side, but may be provided on the lower arm 1 side.

[0022]

As described above, according to the tilt cab support stay of the present invention, a complicated operation of the stopper body is not required when the cab is tilted forward or returned to the original position, and the cab tilt operation is not performed. Can be performed smoothly.

[Brief description of the drawings]

FIG. 1 is an overall side view of a support stay showing one embodiment of the present invention.

FIG. 2 is an overall perspective view of a stopper body.

FIG. 3 is an overall side view of a stopper body.

FIG. 4 is a cross-sectional view of an upper arm of a stopper body installation portion.

FIG. 5 is a half perspective view of a conventional tilt cab type vehicle equipped with a support stay when the cab leans forward.

FIG. 6 is an overall side view of a conventional support stay.

[Explanation of symbols]

1: Lower arm, 2: Upper arm, 231, 233 ...
Hole 232, upper half gap, 6: regulating lever, 8: stopper body, 81, 82: leg, 83, 84: body.

Claims (3)

(57) [Claims] 1. A pair of arms which are connected to bendable, and which support a tilt cab (C) which is linearly positioned and tilts forward.
And (1,2), one arm provided in (2) engages with the other (1) of the arms, the arms in the engaged state (1,2)
Regulating lever (6) for regulating the bending of the arm and one of the arms
(2) and provided with storage position in the rotating operation between the advanced position, comprising a stopper member for preventing the engagement removing operation of said at advanced position regulating lever (6) (8), wherein Strike
The wrapper body (8) has legs (81, 82) for rotation and
A main body (83, 82) provided integrally with the legs (81, 82).
84) at the advanced position.
4) abuts the regulating lever (6) to release the engagement thereof.
Work is stopped, and in the storage position
A main body (83) is provided on one of said arms (2);
Elastically held in the relatively small opening (233).
Support stay of that going on tilt-cab to be. 2. The main body (84) in the advanced position.
Is a hole (23) through which the regulating lever (6) passes.
2. The tilt cab support stay according to claim 1, wherein the tilt cab is elastically retained in the upper half gap . 3. The stopper (8) is connected to the leg (8).
1,82) and the support stays of a tilt-cab according to claim 1 or 2 main body (83, 84) are constituted by bending a single metal bar.