JPH11257411A - Fixing bracket construction of hydraulic shock absorber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hydraulic shock absorber in which weight reduction and cost decrease can be attained while raising rigidity and strength against lateral load in the longitudinal direction of a vehicle. SOLUTION: In the fixing bracket 2 of a hydraulic shock absorber provided with a main body part 21 mounted and fixed along the outer face of a strut outer cylinder 1 and a pair of left and right flange parts 22, 23 projecting from the main body part 21 in parallel to a diametrical direction, the fixing bracket 2 is formed by bending one sheet of plate, and the upper end edge parts of left and right a pair of the flange parts 22, 23 are connected to each other through a connecting part 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing bracket structure for a hydraulic shock absorber.

[0002]

2. Description of the Related Art Conventionally, as a fixing bracket structure of such a hydraulic shock absorber, for example, Japanese Unexamined Patent Publication No. 8-21 is disclosed.
A structure as described in Japanese Patent No. 9224 is known. The fixing bracket of this conventional hydraulic shock absorber is mounted along the outer peripheral surface of the strut outer cylinder by bending both ends of a single plate material having a hole through which the strut outer cylinder is formed at the center downward. A pair of left and right main body portions to be fixed are formed, and both flange portions parallel to each other are integrally formed in a radial direction from one side edge of each of the main body portions.

[0003]

However, in the conventional fixing bracket structure of a hydraulic shock absorber as described above, each flange portion is formed independently from each of the left and right main body portions, and both flange portions are formed independently of each other. Since they are independent from each other, the rigidity of the flanges when a lateral load acts in the vehicle front-rear direction in the assembled state where the knuckle connection part inserted and clamped between the two flange parts is fastened with bolts and nuts Therefore, it is necessary to use a thick plate as the plate material of the fixing bracket, and therefore, the material cost and the processing cost are increased, and the demand for the weight reduction is defeated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. A hydraulic pressure buffer capable of reducing weight and cost while increasing rigidity and strength against a lateral load in the vehicle longitudinal direction. It is an object of the present invention to provide a fixing bracket structure for a vessel.

[0005]

According to a first aspect of the present invention, there is provided a hydraulic shock absorber according to the first aspect of the present invention, wherein the main body is mounted and fixed along an outer surface of a strut outer cylinder. And a pair of left and right flanges protruding radially parallel from the portion, wherein the fixing bracket is formed by bending a single sheet of material, and upper end edges of the pair of left and right flanges are provided. The parts are connected to each other via connecting pieces. In the fixing bracket structure for a hydraulic shock absorber according to claim 2, in the fixing bracket structure for a hydraulic shock absorber according to claim 1, an upper edge of each of the flange portions is provided at an intermediate portion of the connecting piece in a facing direction of both flange portions. A means in which a constricted portion having a smaller width in the radial direction than the projecting length in the radial direction is formed. In the fixing bracket structure for a hydraulic shock absorber according to claim 3, in the fixing bracket structure for a hydraulic shock absorber according to claim 1 or 2, the main body mounted and fixed along the outer surface of the strut outer cylinder is provided. The means is open on the back side of the flange. In the fixing bracket structure for a hydraulic shock absorber according to a fourth aspect, in the fixing bracket structure for a hydraulic shock absorber according to the third aspect, the main body mounted and fixed along the outer surface of the strut outer cylinder is provided. The means is provided over a range of more than half a circumference. A fixing bracket structure for a hydraulic shock absorber according to claim 5, wherein the fixing bracket structure for a hydraulic shock absorber according to any one of claims 1 to 4, wherein the main body is mounted and fixed along an outer surface of the strut outer cylinder. The entire periphery of the upper and lower side edges of the portion is fixed by welding to the strut outer cylinder.

[0006]

In the fixing bracket structure of the hydraulic shock absorber according to the first aspect of the present invention, as described above, the pair of left and right flange portions are connected and integrated with each other by the connecting pieces at the upper end edges thereof, thereby reinforcing each other. As a result, the rigidity and strength against the lateral load in the vehicle longitudinal direction are increased without increasing the thickness of the component plate members. In the fixing bracket structure for a hydraulic shock absorber according to the second aspect, when the connecting portion of the knuckle inserted and clamped between the two flange portions is fastened and fixed with a bolt and a nut, the narrow portion of the connecting piece is subjected to a load in the fastening direction. On the other hand, because it can be deformed to some extent,
The fastening operation can be easily performed even if the connecting piece exists between the two flange portions. In the fixing bracket structure of the hydraulic shock absorber according to the third aspect, since the main body portion is opened on the back side of both flange portions, the fixing bracket can be easily formed from one plate material by bending the expanded plate material. Can be molded. In the fixing bracket structure for a hydraulic shock absorber according to claim 4, the strut has a structure in which a main body portion mounted and fixed along the outer surface of the strut outer cylinder is provided over a range equal to or more than half the circumference of the strut outer cylinder. A large connection fixing portion with respect to the outer cylinder can be obtained, and the connection strength can be increased. In the fixing bracket structure for a hydraulic shock absorber according to the fifth aspect, the entire periphery of the upper and lower side edges of the main body mounted and fixed along the outer surface of the strut outer cylinder is welded to the strut outer cylinder. The connection strength to the cylinder increases.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. (Embodiment 1) First, FIG.
The configuration of the hydraulic shock absorber according to the first embodiment of the present invention shown in FIGS. 1 is a partially cutaway front view showing a hydraulic shock absorber according to Embodiment 1 of the present invention, FIG. 2 is a view taken in the direction of arrow B in FIG. 1 showing a fixing bracket portion, and FIG. 3 is a perspective view showing a fixing bracket portion. FIG. 4 is a plan view of a fixing bracket part, and FIG. 5 is a view showing a forming process of the fixing bracket. In these figures, 1 is a strut outer cylinder, 2 is a fixing bracket, 3 is a cylinder, 4
Is a piston rod, 5 is a piston, 6 is a rod guide,
Reference numeral 7 denotes a spring seat.

The strut outer cylinder 1 is formed in a substantially cylindrical shape, and in particular, the outer periphery of the lower end where the fixing bracket 2 is mounted is formed in a uniform circular shape.

The fixing bracket 2 is formed by bending a single basic development plate material P, as shown in FIG. 5 showing a forming process thereof. As shown in FIGS. A main body 21 mounted and fixed along the outer surface of the outer cylinder 1, a pair of left and right flanges 22, 23 projecting radially parallel from the main body 21, and upper end edges of the pair of left and right flanges 22, 23. And a connecting portion (connecting piece) 24 for connecting the portions to each other.

More specifically, the main body 21 includes a pair of left and right main bodies 21a and 21b formed in an arc shape along the cylindrical outer surface of the strut outer cylinder 1, respectively.
b, and a connecting main body 21c that connects the left and right main bodies 21a, 21b to each other at the upper end thereof in a circumferential arc shape. Reinforcing ribs 21d are formed to bend inward from the connection main body 21c over the entire upper edges of the pair of left and right main bodies 21a and 21b and to expand the base of the bent portion outward.

The pair of left and right flange portions 22 and 23
The pair of left and right main body portions 21a and 21b extend radially parallel from side edges of the main body portion 21c on the side of the main body portion 21c, respectively, while the connecting portion 24 is a lower end edge of the main body portion 21c. The left and right end edges are horizontally extended in the radial direction from the part,
23 are connected to the left and right flange portions 22 and 23 and the connecting portion 2.
4 and a substantially gate-shaped configuration.

Then, as shown in FIG.
By forming a substantially V-shaped notch 24a at the center of the front end edge of the front end portion 4, a radially protruding length L of the upper end edge portion of both flange portions 22, 23 is provided at an intermediate portion in the facing direction of both flange portions 22, 23.
A constricted portion 24b having a smaller radial width W is formed.

A continuous outwardly extending reinforcing rib 21e, 21f is formed at the lower end edge of each of the left and right main body portions 21a, 21b and the left and right flange portions 22, 23. Reinforcing ribs 21g and 21h are formed at the boundary between the main body portions 21a and 21b and the left and right main body portions 21a and 21b. In the left and right flange portions 22 and 23, bolt insertion holes 25,
26 are formed.

As shown in FIG. 4, a main body 21 mounted and fixed along the outer surface of the strut outer cylinder 1 is opened on the back side of both flange parts 22 and 23, and at least half the circumference of the strut outer cylinder 1. And arc-shaped notches 21j and 21k for reducing the weight of the fixing bracket 2 are formed at the center positions of the open ends of the left and right main bodies 21a and 21b, respectively.

The fixing bracket 2 is fixedly connected to the strut outer cylinder 1 by welding the entire periphery of the upper and lower side edges of the main body 21 to the strut outer cylinder 1.

Next, a method of forming the fixing bracket 2 will be described with reference to the process chart of FIG. [Blank Step] In this step, a plate material P in a basic deployed state of the fixing bracket 2 is punched from one sheet material.

[Reinforcing Rib Forming Step] In this step, reinforcing ribs 21e and 21f are bent at both left and right side edges of the basic development plate material P.

[Drawing Step] In this drawing step, rough drawing processing is performed from a planar state to a three-dimensional state obtained by bending the boundary between the components.

[Forming / Rib Producing Step] In this forming / rib protruding step, the reinforcing ribs 21g and 21h
The fixing bracket 2 is formed into a final form together with the forming.

[Piercing Step] In this piercing step, a notched circular insertion hole for inserting the strut outer cylinder 1 into the main body part 21 and a substantially V
A process of punching the letter-shaped cutouts 24a is performed.

[Welding / Punching Step] The fixing bracket 2 is mounted on the outer periphery of the lower end of the strut outer cylinder 1 and the upper end edge and the lower end edge of the main body 21 are welded over the entire length thereof, thereby connecting to the strut outer cylinder 1. After fixing, both flange portions 22, 2
3, the bolt insertion holes 25 and 26 are drilled.

Next, the operation and effect of the first embodiment of the invention will be described. In the fixing bracket structure according to the first embodiment of the present invention, as described above, the pair of left and right flange portions 22 and 23 is connected to the connecting portion 24 at the upper end edge.
As a result, it is possible to increase rigidity and strength against lateral load in the longitudinal direction of the vehicle without increasing the thickness of the component plates. Can be Further, since it is not necessary to increase the thickness of the component plate material more than necessary, it is possible to reduce the weight and cost.

Further, when the connecting portion of the knuckle inserted and clamped between the two flange portions 22 and 23 is fastened and fixed with bolts and nuts, the constricted portion 24b of the connecting portion 24 can be deformed to some extent against the load in the fastening direction. Therefore, even if the connecting portion 24 exists between the flange portions 22 and 23, the fastening operation can be easily performed.

The main body 21 has two flanges 22, 2
3, the fixing bracket 2 can be easily formed from a single plate by bending the plate P in the unfolded state, as shown in FIG.

Further, since the main body 21 mounted and fixed along the outer surface of the strut outer cylinder 1 extends over a half or more circumference of the strut outer cylinder, a large connection fixing portion to the strut outer cylinder 1 can be obtained to increase the connection strength. Will be able to do it.

Further, the entire periphery of the upper and lower side edges of the main body portion 21 mounted and fixed along the outer surface of the strut outer cylinder 1 is welded to the strut outer cylinder 1, thereby increasing the connection strength to the strut outer cylinder 1. Will be able to do it.

Next, another embodiment of the present invention will be described. The fixing bracket structure according to the second embodiment is different from the fixing bracket structure according to the first embodiment in that the structure for forming the constricted portion 24b in the connecting portion 24 is different. The same components are denoted by the same reference numerals, description thereof will be omitted, and only different points will be described.

(Embodiment 2) In the fixing bracket structure of a hydraulic shock absorber according to Embodiment 2 of the present invention, as shown in a plan view of FIG. By forming substantially V-shaped notches 24c and 24d at the center of the connection edge on the main body 21c side, respectively,
A constricted portion 24b whose radial width W is smaller than the radially protruding length L of the upper end edges of the flange portions 22 and 23 is formed at an intermediate portion in the facing direction between the flange portions 22 and 23. Therefore, with the fixing bracket structure of the hydraulic shock absorber according to the second embodiment of the present invention, substantially the same effects as those of the first embodiment of the present invention can be obtained.

(Embodiment 3) In a fixing bracket structure of a hydraulic shock absorber according to Embodiment 3 of the present invention, as shown in a plan view of FIG. By punching out, the radial width W is narrower than the radially protruding length L of the upper end edges of the flange portions 22 and 23 at the intermediate portion of the flange portions 22 and 23 facing the front edge portion of the connecting portion 24. The constricted portion 24b is formed. Therefore, Embodiment 2 of the present invention
In the fixing bracket structure of the hydraulic shock absorber of the third embodiment, substantially the same effects as those of the first embodiment of the invention can be obtained.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to the embodiments of the present invention, and design changes and the like may be made without departing from the gist of the present invention. The present invention is also included in the present invention.

For example, in the embodiment of the invention, the main body 2
1 is open on the back side of both flange portions 22 and 23, but may be continuous.

In the embodiment of the present invention, the case has been described where the main body portion 21 mounted and fixed along the outer surface of the strut outer cylinder 1 is provided over a range of more than half a circumference of the strut outer cylinder. It may be.

[0033]

As described above, in the hydraulic shock absorber according to the first aspect of the present invention, the main body mounted and fixed along the outer surface of the strut outer cylinder and the right and left protruding radially parallel from the main body. In a fixing bracket of a hydraulic shock absorber having a pair of flange portions, the fixing bracket is formed by bending a single plate material, and upper end edges of a pair of left and right flange portions are connected to each other via a connection piece. With this configuration, the pair of left and right flange portions are connected to each other by a connecting piece at the upper end edge thereof, so that they are mutually reinforced, so that they are reinforced with each other. Can be increased, and it is not necessary to increase the thickness of the component plate members, so that the effect of reducing the weight and cost can be obtained.

In the fixing bracket structure for a hydraulic shock absorber according to a second aspect of the present invention, in the fixing bracket structure for a hydraulic shock absorber according to the first aspect, the two flange portions are provided at an intermediate portion of the connecting pieces in a facing direction of the two flange portions. With the configuration in which the constricted portion whose radial width is smaller than the radially protruding length of the upper end edge portion is formed, the fastening operation can be easily performed even if there is a connecting piece between both flange portions. Become like

According to a third aspect of the present invention, in the fixing bracket structure for a hydraulic shock absorber according to the first or second aspect, the main body is mounted and fixed along an outer surface of the strut outer cylinder. Since the portions are open on the back sides of both flange portions, the fixing bracket can be easily formed from a single plate by bending the plate in the unfolded state.

According to a fourth aspect of the present invention, in the fixing bracket structure of the hydraulic shock absorber according to the third aspect, the main body portion mounted and fixed along the outer surface of the strut outer cylinder is provided. With the configuration provided over a range that is equal to or more than half the circumference of the outer cylinder, a large connection fixing portion for the strut outer cylinder can be obtained, and the connection strength can be increased.

According to a fifth aspect of the present invention, in the fixing bracket structure for a hydraulic shock absorber according to any one of the first to fourth aspects, the fixing bracket is mounted and fixed along an outer surface of the strut outer cylinder. Since the entire periphery of the upper and lower side edges of the main body is fixed to the strut outer cylinder by welding, the connection strength to the strut outer cylinder can be increased.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a hydraulic shock absorber according to Embodiment 1 of the present invention.

FIG. 2 is a side view showing a fixing bracket portion of the hydraulic shock absorber according to Embodiment 1 of the present invention.

FIG. 3 is a perspective view showing a fixing bracket of the hydraulic shock absorber according to the first embodiment of the present invention.

FIG. 4 is a plan view showing a fixing bracket of the hydraulic shock absorber according to Embodiment 1 of the present invention.

FIG. 5 is an explanatory diagram of a forming process of a fixing bracket of the hydraulic shock absorber according to the first embodiment of the present invention.

FIG. 6 is a plan view showing a fixing bracket part of a hydraulic shock absorber according to Embodiment 2 of the present invention.

FIG. 7 is a plan view showing a fixing bracket part of a hydraulic shock absorber according to Embodiment 3 of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer cylinder 2 Flange kissing bracket 21 Main part 22 Left flange part 23 Right flange part 24 Connection part (connection piece) 24b Constricted part

Claims (5)

[Claims] 1. A fixing bracket for a hydraulic shock absorber comprising a main body mounted and fixed along an outer surface of a strut outer cylinder and a pair of left and right flanges protruding radially parallel from the main body. A fixing bracket structure for a hydraulic shock absorber, wherein a bracket is formed by bending a single plate material, and upper end edges of a pair of left and right flange portions are connected to each other via connection pieces. 2. A constricted portion having a radial width narrower than a radially protruding length of upper end edges of both flange portions of the connecting piece in a facing direction intermediate portion of both flange portions. 2. The fixing bracket structure of the hydraulic shock absorber according to 1. 3. The hydraulic shock absorber according to claim 1, wherein a main body mounted and fixed along an outer surface of the strut outer cylinder is opened on the back side of both flanges. Bracket structure. 4. The hydraulic buffer according to claim 3, wherein a main body mounted and fixed along an outer surface of the strut outer cylinder is provided over a range of at least a half circumference of the strut outer cylinder. Fixing bracket structure of vessel. 5. The strut outer cylinder is fixed by welding the entire periphery of upper and lower side edges of the main body mounted and fixed along the outer surface of the strut outer cylinder to the strut outer cylinder. 5. The fixing bracket structure for a hydraulic shock absorber according to any one of 4.