JP2001280397A - Strut type shock absorber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a strut type shock absorber capable of adjusting the car height of a vehicle each time when necessary. SOLUTION: This strut type shock absorber having a knuckle bracket 2 having a cylindrical embracing-holding part 3 for embracing and holding the outer periphery of a shock absorber body 1 and a pair of parallel sandwiching pieces 4 for sandwiching a knuckle arm by extending from the embracing- holding part 3 by installing the shock absorber body 1 on the car body side knuckle arm via the knuckle bracket 2, is featured in that a screw 6 is formed on the outer periphery of the shock absorber body 1, a slit 8 is formed in the embracing-holding part 3 in response to an intermediate part of the sandwiching pieces 4, and after inserting the shock absorber body 1 into the embracing- holding part 3 up to an optional position, the embracing-holding part 3 is fastened via the sandwiching pieces 4, and a lock nut 9 is thread-mounted on the outer periphery of the shock absorber body 1 on the upper end, the lower end or the upper and lower both ends of the embracing-holding part 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strut type shock absorber interposed between a vehicle body side and an axle side of a vehicle for suspending the vehicle body and attenuating vibration from a road surface.

[0002]

2. Description of the Related Art A strut type shock absorber comprises an outer shell and a shock absorber inserted into the outer shell, and the shock absorber main body is attached to a knuckle arm on the vehicle body via a knuckle bracket. It has become.

The knuckle bracket has a cylindrical holding portion for holding the outer periphery of the shock absorber main body, and a pair of parallel holding pieces extending from the holding portion toward the vehicle body and holding the knuckle arm. The shock absorber main body inserted into the section is attached to the knuckle arm side via a holding piece.

When the holding section is cylindrical, the shock absorber main body is press-fitted into the holding section and fixed by welding at the upper and lower ends of the holding section.

Further, when the holding portion is semicircular, when the holding piece is tightened with a bolt and a nut, the holding portion tightens the outer periphery of the shock absorber body, and is then fixed by welding at the upper and lower ends of the holding portion. ing.

[0006]

As described above, since the shock absorber main body is held by the holding portion of the knuckle bracket and fixed by welding at the upper and lower ends of the holding portion, the height position of the shock absorber main body is increased. Is fixed,
Thereby, the height of the vehicle body connected to the upper part of the shock absorber main body, that is, the vehicle height is set.

However, when the vehicle travels on a highway or the like, it is more stable to reduce the vehicle height in order to cope with the high speed traveling. Although it is desired, when the shock absorber main body is fixed to the knuckle bracket by welding as described above, there is a problem that the vehicle height cannot be adjusted each time.

An object of the present invention is to provide a strut-type shock absorber that can adjust the height of a vehicle each time it is needed.

[0009]

Means for Solving the Problems In order to achieve the above object, a means of the present invention is to attach a shock absorber body to a vehicle body side knuckle arm via a knuckle bracket,
The knuckle bracket is a strut type shock absorber having a cylindrical holding portion for holding the outer periphery of the shock absorber body and a pair of parallel holding pieces extending from the holding portion and holding the knuckle arm. A screw is formed on the outer periphery of the, and a slit is formed in the above-mentioned holding part corresponding to the middle of the holding piece, the shock absorber body is inserted into the holding part to an arbitrary position, and the holding part is fastened via the holding piece Further, a lock nut is screwed onto the outer periphery of the shock absorber main body at the upper end, lower end, or both upper and lower ends of the holding portion.

In this case, a screw is formed on the inner periphery of the holding portion,
The holding portion may be fastened while the outer circumferential screw of the shock absorber main body and the inner circumferential screw of the holding portion are engaged with each other.

Similarly, the lock nut may have a slit and a fastening piece provided at a position corresponding to the slit, and the lock nut may be fastened via the fastening piece.

Similarly, a seal may be integrally provided at the upper end or the lower end of the lock nut.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show a strut-type shock absorber according to an embodiment of the present invention.

This strut type shock absorber is:
As in the prior art, the shock absorber main body 1 is attached to the vehicle-side knuckle arm via the knuckle bracket 2, and the knuckle bracket 2 extends from the cylindrical holding portion 3 for holding the outer periphery of the shock absorber main body 1. It has a pair of parallel holding pieces 4, 4 for holding the knuckle arm.

The shock absorber main body 1 includes an outer shell 7 and a shock absorber 5 inserted into the outer shell 7. A screw 6 is formed on the outer periphery of the outer shell 7 which is the outer periphery of the shock absorber main body 1. Further, a slit 8 is formed in the holding portion 3 so as to correspond to the middle of the holding pieces 4 and 4. After inserting the shock absorber main body 1 to an arbitrary position in the holding section 3, the holding section 3 is fastened via the holding piece 4, and further, at the upper end of the holding section 3, a screw 6 is provided on the outer periphery of the shock absorber body 1. The knuckle bracket 2 is fastened by screwing the lock nut 9 downward. The lock nut 9 may be screwed at the lower end or both upper and lower ends of the knuckle bracket 2.

The holding pieces 4, 4 of the knuckle bracket 2
A knuckle arm provided on the wheel side is sandwiched between the four, and two opposed mounting holes 10, 10 are provided in the holding pieces 4, 4, and bolts inserted into the mounting holes 10, 10 are tightened with nuts. It has become.

The slits 8 are formed in the holding portion 3, and the slits 8 are opened by opening the holding pieces 4 and 4 outward on both sides so that the inner diameter of the holding portion 3 can be increased. The inner diameter of the holding portion 3 can be reduced when the inside is tightened. For this reason, the lower part of the shock absorber main body 1 is inserted into the holding part 3 to an arbitrary position while expanding the holding part 3 of the knuckle bracket 2 while the upper part of the shock absorber main body 1 is connected to the vehicle body side. it can. Therefore, when adjusting the vehicle height, for example, when lowering the vehicle height, the shock absorber body 1 is made to penetrate deeply into the holding portion 3 of the knuckle bracket 2, and in this state, the holding portion 3 is inserted through the holding pieces 4, 4. By tightening the upper part of the knuckle bracket 2 with the lock nut 9, the shock absorber main body 1 is fixed and set at the height of the position. In order to set the vehicle height to another height, the holding portion 3 of the knuckle bracket 2 and the lock nut 9 are loosened each time, the shock absorber main body 1 is moved up and down, and the holding portion is again moved to a desired position. 3 and the lock nut 9 may be tightened.

The holding portion 3 of the knuckle bracket 2 may have a smooth inner surface, but a screw 11 is formed on the inner circumference of the holding portion 3 as shown in FIG.
While engaging the inner peripheral screw 11 of the holding section 3 with the holding section 3
May be concluded. In this case, the lock nut 9 and the holding portion 3 function as a double nut, and the shock absorber main body 1 can be more firmly positioned.

As shown in FIG. 4, the lock nut 9 includes a ring-shaped main body 12 having a screw 16 formed therein, a slit 13 formed in the main body 12, and fastening pieces 14 provided at positions corresponding to the slit 13. The lock nut 9 itself is fastened by the bolt 15 and the nut 16 via the fastening pieces 14, 14.

The lock nut 9 according to another embodiment shown in FIGS. 5 and 6 may be used. The lock nut 9 according to this embodiment is for waterproofing, and includes a ring-shaped body 17, a ring-shaped seal 19 provided on one end of the ring-shaped body 17, and a seal connected to the ring-shaped body 17. And a casing 18 integrally holding the casing 19. Screws 16 and 16a are formed on the inner periphery of the ring-shaped main body 17 and the seal 19, so that the shock absorber main body 1 is formed.
And the seal 19 is disposed at the upper end or lower end of the ring-shaped main body 17 so that the nut bracket 2
To prevent rainwater or the like from entering the inner periphery of the holding portion 3.

In FIG. 1, a spring seat 20 is screwed above the outer shell 7.

[0023]

According to the present invention, the following effects can be obtained.

(1) According to the invention of each claim, since the holding portion of the knuckle bracket is formed with the slit, the diameter of the holding portion is increased through the slit, and the holding portion is smoothly inserted into the holding portion. The shock absorber body can be inserted to any position. In particular, the shock absorber main body can be moved up and down while the shock absorber main body remains connected to the vehicle body side, and the vehicle height, for example, the vehicle height can be freely adjusted by fastening it to the knuckle bracket at an arbitrary position.

(2) According to the second aspect of the present invention, since the screw is provided in the holding portion of the knuckle bracket, the knuckle bracket itself can be fastened as a double nut in cooperation with the lock nut.

(3) According to the third aspect of the invention, the lock nut itself can be fastened while freely moving vertically by loosening the slit.

(4) According to the invention of claim 4, by providing a seal at the upper end or the lower end of the lock nut, it is possible to prevent water such as rainwater from entering the knuckle bracket with this seal.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of a strut type shock absorber according to one embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional front view of the knuckle bracket of FIG. 1;

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is an enlarged exploded plan view of the lock nut of FIG. 1;

FIG. 5 is a plan view of a lock nut according to another embodiment.

FIG. 6 is a longitudinal sectional side view of the lock nut of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shock absorber 2 Knuckle bracket 3 Holding part 4 Holding part 6, Screw 8 Slit 9 Lock nut 11 Screw 13 Slit 14 Tightening piece 19 Seal

Claims (4)

[Claims] 1. A shock absorber main body is attached to a vehicle-side knuckle arm via a knuckle bracket. The knuckle bracket extends from the cylindrical holding portion for holding the outer periphery of the shock absorber main body and holds the knuckle arm. A strut-type shock absorber having a pair of parallel holding pieces, wherein a screw is formed on the outer periphery of the shock absorber body, and a slit is formed in the holding portion corresponding to the middle of the holding piece, and the shock absorber body is formed. After inserting the lock into the holding part to an arbitrary position, the holding part is fastened via the holding piece, and a lock nut is screwed onto the outer periphery of the shock absorber body at the upper end, lower end, or both upper and lower ends of the holding part. Characteristic strut type shock absorber. 2. A screw is formed on an inner periphery of the holding portion, and the holding portion is fastened while engaging an outer peripheral screw of the shock absorber main body with an inner peripheral screw of the holding portion. Item 6. The strut-type shock absorber according to Item 1. 3. The lock nut according to claim 1, wherein the lock nut has a slit and a fastening piece provided at a position corresponding to the slit, and the lock nut is fastened via the fastening piece. Strut type shock absorber. 4. The lock nut according to claim 1, wherein a seal is integrally provided at an upper end or a lower end of the lock nut.
Strut type shock absorber.