JP2000304084A - Bracket of shock absorber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bracket of shock absorber which can be installed to a shock absorber with a sufficient installing strength. SOLUTION: A bracket 8 furnished with a fastening hole 9 where the outer tube 2 of a shock absorber is inserted; a slit 10 opened to the outer periphery by communicating with the fastening hole 9; and tongue pieces 11 formed at both sides of the slit 10; is provided. The bracket 8 gives a fastening force to the shock absorber by adding a clamp pressure to the tongue pieces 11 so as to narrow the width of the slit 10, and it is installed to the shock absorber 1. And the bracket 8 makes at least one side of the pressurizing surfaces where the clamp pressure of the tongue pieces 11 is added, inclined, close to the center line Y of the slit 10, at the closer side to the fastening hole 9, while separating from the center line Y of the slit 10, and the farther side from the fastening hole 9, in the free condition of the tongue pieces 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bracket suitable for use in mounting a shock absorber on a vehicle in a vehicle suspension system.

[0002]

2. Description of the Related Art A bracket of this type is disclosed in
As shown in JP-A-246818, a fastening hole into which the outer cylinder of the shock absorber is inserted, a slit communicating with the fastening hole and opening on the outer periphery, and tongue pieces formed on both sides of the slit are provided. ing. In the state in which the outer cylinder of the shock absorber is inserted into the fastening hole, the bracket applies a clamping force to the tongue by a clamp bolt or the like to reduce the width of the slit, thereby providing a fastening force to the shock absorber. It can be attached to.

[0003]

However, in the prior art, when the bracket is attached to the shock absorber by applying a clamp pressure to the tongue, the shock absorber is in a direction parallel to the direction in which the clamp pressure is applied. However, in the direction of the center line of the slit, that is, the direction orthogonal to the direction in which the clamping pressure is applied, it is difficult to obtain the fastening force to the shock absorber.

Therefore, there is a possibility that the mounting strength of the bracket to the shock absorber may be insufficient.

The present invention has been devised in view of the above-mentioned conventional circumstances, and has as its object to provide a shock absorber bracket which can be attached to the shock absorber with sufficient mounting strength.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a fastening hole into which an outer cylinder of a shock absorber is inserted, a slit communicating with the fastening hole and opening to the outer periphery, and both sides of the slit. A clamping force is applied to the shock absorber by applying a clamping pressure to the tongue piece to reduce the width of the slit, and the shock absorber is attached to the shock absorber. At least one of the pressing surfaces to which the clamping pressure of the piece is applied is inclined so that, in the free state of the tongue piece, the side close to the fastening hole is close to the center line of the slit, and the side far from the fastening hole is away from the center line of the slit. It has a configuration.

According to a second aspect of the present invention, there is provided a fastening hole into which the outer cylinder of the shock absorber is inserted, a slit communicating with the fastening hole and opening to the outer periphery, and tongue pieces formed on both sides of the slit. The clamping force is applied to the shock absorber by applying a clamping pressure to the tongue to reduce the width of the slit,
In the bracket of the shock absorber attached to the shock absorber, the inner dimension of the fastening hole is smaller than the outer dimension of the outer cylinder of the shock absorber in a direction substantially coinciding with the center line of the slit,
In the direction substantially perpendicular to the center line of the slit, the outer dimensions of the outer cylinder of the shock absorber are equal to or larger than the outer dimensions of the outer cylinder.

Here, the bracket generally refers to a member used to attach the shock absorber to the vehicle in the suspension system of the vehicle. For example, a bracket for connecting the lower end of the shock absorber to the lower arm on the unsprung side may be used. , Knuckle arm,
It includes a knuckle spindle and the like.

In such a configuration, the bracket includes:
With the outer cylinder of the shock absorber inserted into the fastening hole, a clamping force is applied to the shock absorber by applying a clamping pressure to the tongue to reduce the width of the slit, and attached to the shock absorber.

In order to apply a clamping pressure to the tongue piece, a clamp bolt penetrating the tongue piece, more specifically, a clamp bolt penetrating the tongue piece in a direction substantially perpendicular to the center line of the slit is provided, and the clamp bolt is tightened. Alternatively, a nut can be screwed onto the clamp bolt to apply a predetermined axial force to the clamp bolt. Alternatively, it is possible to use a member for pressing the tongue piece.

Here, in the first aspect of the present invention,
In the free state of the tongue, at least one of the pressing surfaces of the tongue to which the clamping pressure is applied is close to the centerline of the slit on the side close to the fastening hole and away from the centerline of the slit on the side far from the fastening hole. It is inclined.

Therefore, when a clamping pressure is applied to the tongue, the inclined pressing surface tends to be parallel to the other pressing surface, and the tongue comes in contact with the outer cylinder of the shock absorber. A moment acts on a portion, that is, a portion where the slit communicates with the fastening hole (hereinafter, referred to as a pressing portion) as a fulcrum. Thus, the pressing portion of the tongue presses the outer cylinder of the shock absorber inward in the radial direction, and a fastening force is applied.

Since the fastening force given by the pressing portion of the tongue piece acts in a direction substantially coincident with the center line of the slit, the shock absorber is provided with a fastening force given in a direction parallel to the direction in which the clamping force is applied. Thus, a large fastening force is provided over substantially the entire circumference of the fastening hole. by this,
The bracket is mounted on the shock absorber as a whole with a high fastening force.

Therefore, a shock absorber bracket that can be attached to the shock absorber with sufficient mounting strength is obtained.

According to the second aspect of the present invention, the inner dimension of the fastening hole is smaller than the outer dimension of the outer cylinder of the shock absorber in a direction substantially coinciding with the center line of the slit, and is smaller than the center line of the slit. In the direction substantially perpendicular to the outer dimensions of the outer cylinder of the shock absorber, the outer dimensions are equal to or larger than this.

Therefore, according to the present invention, the outer cylinder of the shock absorber is inserted into the fastening hole of the bracket by press-fitting or the slit is slightly expanded to be inserted. After inserting the outer cylinder of the shock absorber, the bracket tries to return to the free state by the so-called springback from the state where the outer cylinder is press-fitted or the state where the slit is expanded. The outer cylinder of the shock absorber is pressed radially inward in a direction that is smaller than the outer dimension of the cylinder and substantially coincides with the center line of the slit, and a fastening force is applied.

The fastening force given by the inner dimension of the fastening hole of the bracket being smaller than the outer dimension of the outer cylinder of the shock absorber acts in a direction substantially coincident with the center line of the slit. Along with the fastening force applied in a direction parallel to the direction in which the clamping force is applied, a large fastening force is applied over substantially the entire circumference of the fastening hole. As a result, the bracket is attached to the shock absorber with a high fastening force as a whole.

Therefore, a shock absorber bracket that can be attached to the shock absorber with sufficient mounting strength is obtained.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a front view partially showing a bracket of a shock absorber according to an embodiment of the present invention, FIG. 2 is an enlarged view showing an essential part of a cross section taken along line AA of FIG. FIG. 3 is a view similar to FIG. 2 showing the free state of the bracket shown in FIG.

In FIG. 1, reference numeral 1 denotes a shock absorber, and reference numeral 2 denotes an outer cylinder of the shock absorber 1. The shock absorber 1 is a hydraulic shock absorber in this embodiment, and a cylinder 4 in which hydraulic oil is filled and a piston rod 3 is inserted is disposed inside the outer cylinder 2. A reservoir chamber 5 for hydraulic oil is formed in the hydraulic chamber.

Reference numeral 8 denotes a bracket.
It has a fastening hole 9 into which the outer cylinder 2 of the shock absorber 1 is inserted, a slit 10 communicating with the fastening hole 9 and opening on the outer periphery, and tongue pieces 11 formed on both sides of the slit 10.
The bracket 8 is, in this embodiment,
Knuckle spindle.

Each of the tongue pieces 11 is formed with an insertion hole 13 for a clamp bolt 12, and a nut 14 is screwed into the clamp bolt 12 inserted into the insertion hole 13, so that the tongue piece 11 is formed. A clamping pressure is applied.

A pressing surface of the tongue 11 to which a clamping pressure is applied, that is, a pressing surface 15 opposed to both sides of the slit 10
In the present embodiment, at least one of them is inclined with respect to the center line Y of the slit 10 when the bracket 8 is in the free state. Specifically, the pressing surface 15 has a center line Y of the slit 10 on the side near the fastening hole 9.
And on the side far from the fastening hole 9, it is inclined away from the center line Y of the slit 10 (see FIG. 3).

The inclination angle θ of the pressing surface 15 is arbitrarily set on one or both pressing surfaces 15 in order to obtain a predetermined fastening force.

The shock absorber 1 includes a piston rod 3
Is mounted on the vehicle body side above the spring, and the lower end side is mounted on the unsprung axle side via the bracket 8 to form a suspension system for the vehicle.

In such a configuration, the outer cylinder 2 of the shock absorber 1 is inserted into the fastening hole 9 of the bracket 8, and in this state, a clamping pressure is applied to the tongue piece 11 to reduce the width of the slit 10 to thereby reduce the width of the slit 10. The device 1 is provided with a fastening force and is attached to the shock absorber 1.

Specifically, a nut 14 is screwed into a clamp bolt 12 inserted into the insertion hole 13 of the tongue piece 11,
By applying a predetermined axial force to the clamp bolt 12, a clamp pressure is applied to the tongue piece 11.

Here, the pressing surface 15 to which the clamping pressure of the tongue piece 11 is applied is in the free state of the tongue piece 11.
On the side close to the fastening hole 9, it is close to the center line Y of the slit 10,
On the side far from the fastening hole 9, the slit is inclined away from the center line Y of the slit 10.

For this reason, when a clamping pressure is applied to the tongue piece 11, one of the inclined pressing surfaces 15 tends to be parallel to the other pressing surface 15, so that the tongue piece 11 has the tongue piece 11 attached thereto. A moment acts on a portion of the shock absorber 1 that is in contact with the outer cylinder 2, that is, a portion (pressing portion) where the slit 10 communicates with the fastening hole 9 as a fulcrum. Thereby, the pressing portion of the tongue piece 11 presses the outer cylinder 2 of the shock absorber 1 inward in the radial direction, and a fastening force is applied.

Since the fastening force given by the pressing portion of the tongue piece 11 acts in a direction substantially coincident with the center line Y of the slit 10, it is applied to the shock absorber 1 in a direction parallel to the direction in which the clamping pressure is applied. The fastening holes 9
, A large fastening force is applied over substantially the entire circumference.

That is, as shown in FIG. 2, the shock absorber 1 has a fastening force F1 applied in a direction parallel to the direction in which the clamp pressure is applied, a fastening force F2 applied by the pressing portion of the tongue piece 11, and Is given as a reaction force, and a large fastening force is given over substantially the entire circumference of the fastening hole 9.

As a result, the bracket 8 is attached to the shock absorber 1 with high fastening force as a whole.

Accordingly, a shock absorber bracket 8 which can be attached to the shock absorber 1 with sufficient attachment strength is obtained.

FIGS. 4 to 7 are views showing another embodiment of the present invention. This embodiment is different from the above embodiment in that the inside dimensions of the fastening holes 9 of the bracket 8 are different from those of the first embodiment.
In the direction substantially coincident with the center line Y of the slit 10, the shock absorber 1
Is smaller than the outer dimension of the outer cylinder 2 and is substantially the same as or larger than the outer dimension of the outer cylinder 2 of the shock absorber 1 in a direction substantially perpendicular to the center line Y of the slit 10.

That is, when the outer cylinder 2 of the shock absorber 1 is cylindrical and the outer dimension of the outer cylinder 2, ie, the outer diameter is D, the inner dimension of the fastening hole 9, ie, the inner diameter, is In the direction substantially coinciding with the center line Y, dS is set, and the slit 1
0 in the direction orthogonal to the center line Y, the inner diameter dS of the fastening hole 9 is smaller than the outer diameter D of the outer cylinder,
L is formed to be equal to or larger than the outer diameter D (see FIGS. 6 and 7).

Since other structures are the same as those of the above-described embodiment, the same components are denoted by the same reference numerals, and redundant description will be omitted.

In such a configuration, the outer cylinder 2 of the shock absorber 1 is inserted into the fastening hole 9 of the bracket 8, and in this state, a clamping pressure is applied to the tongue piece 11 to reduce the width of the slit 10, thereby reducing the width of the slit 10. The device 1 is provided with a fastening force and is attached to the shock absorber 1.

Specifically, a nut 14 is screwed into a clamp bolt 12 inserted into an insertion hole 13 of the tongue piece 11,
By applying a predetermined axial force to the clamp bolt 12, a clamp pressure is applied to the tongue piece 11.

Here, in the direction where the inside dimension of the fastening hole 9 substantially coincides with the center line Y of the slit 10, it is smaller (dS) than the outside dimension (D) of the outer cylinder 2 of the shock absorber 1. In the direction substantially perpendicular to the center line Y, the outer cylinder 2 of the shock absorber 1
Is equal to or greater than the outside dimension (D) of (d)
L) is formed.

Therefore, according to this embodiment, the outer cylinder 2 of the shock absorber 1 is inserted into the fastening hole 9 of the bracket 8 by press-fitting, or is inserted by slightly expanding the slit 10. You. After inserting the outer cylinder 2 of the shock absorber 1,
Since the bracket 8 attempts to return to the free state by the so-called springback from the state in which the outer cylinder 2 is press-fitted or the state in which the slit 10 is expanded, the inner dimensions (d
The outer cylinder 2 of the shock absorber 1 is pressed inward in the radial direction in a direction where S) is smaller than the outer dimension (D) of the outer cylinder 2 of the shock absorber 1 and substantially coincides with the center line Y of the slit 10, and is fastened. Force is applied (see FIG. 5).

The fastening force given when the inside dimension (dS) of the fastening hole 9 of the bracket 8 is smaller than the outside dimension (D) of the outer cylinder 2 of the shock absorber 1 substantially matches the center line Y of the slit 10. Therefore, a large fastening force is applied to the shock absorber 1 over substantially the entire circumference of the fastening hole 9 together with the fastening force applied in a direction parallel to the direction in which the clamping force is applied. Thus, the bracket 8 is attached to the shock absorber 1 with a high fastening force as a whole (see FIG. 4).

Accordingly, a shock absorber bracket 8 which can be attached to the shock absorber 1 with sufficient attachment strength is obtained.

FIGS. 8 to 10 show still another embodiment of the present invention. This embodiment is different from the above embodiment in that the inner dimensions of the fastening holes 9 of the bracket 8 are different from those of the above embodiment. 10 is smaller than the outer dimension of the outer cylinder 2 of the shock absorber 1 in a direction substantially coincident with the center line Y of the
In the direction substantially perpendicular to the center line Y, the outer dimensions of the outer cylinder 2 of the shock absorber 1 are formed to be equal to or larger than the outer dimensions of the outer cylinder 2 and the inner shape of the fastening hole 9. Is a polygonal shape.

That is, when the outer shape of the outer cylinder 2 of the shock absorber 1 is a hexagonal prism and the outer dimension L of the outer cylinder 2,
The inner dimension of the fastening hole 9 is 1S in a direction substantially coinciding with the center line Y of the slit 10, and 1L in a direction orthogonal to the center line Y of the slit 10, and the inner dimension 1S of the fastening hole 9 is outside. The outer diameter L is smaller than the outer diameter L of the cylinder, and the inner dimension IL is equal to or larger than the outer diameter L (see FIGS. 9 and 10).

Since other configurations are the same as those of the above-described embodiment, the same components are denoted by the same reference numerals, and redundant description will be omitted.

In such a configuration, the outer cylinder 2 of the shock absorber 1 is inserted into the fastening hole 9 of the bracket 8 by press-fitting or the slit 10 is slightly expanded to be inserted. After the outer cylinder 2 of the shock absorber 1 is inserted, the bracket 8
Is trying to return to a free state by a so-called spring back from a state in which the outer cylinder 2 is press-fitted or a state in which the slit 10 is expanded. Slit 1 smaller than (L)
The outer cylinder 2 of the shock absorber 1 is pressed inward in the radial direction in a direction substantially coinciding with the center line Y of 0, and a fastening force is applied.

The fastening force given by the inner dimension (1S) of the fastening hole 9 of the bracket 8 being smaller than the outer dimension (L) of the outer cylinder 2 of the shock absorber 1 substantially coincides with the center line Y of the slit 10. Therefore, a large fastening force is applied to the shock absorber 1 over substantially the entire circumference of the fastening hole 9 together with the fastening force applied in a direction parallel to the direction in which the clamping force is applied. Thereby, the bracket 8 is attached to the shock absorber 1 with a high fastening force as a whole.

Therefore, also in this embodiment,
The bracket 8 of the shock absorber that can be attached to the shock absorber 1 with sufficient attachment strength is obtained.

Although the embodiment has been described with reference to the drawings, the specific configuration is not limited to this embodiment, and can be changed without departing from the spirit of the invention.

[0051]

As described above in detail, according to the present invention, a shock absorber bracket which can be attached to the shock absorber with sufficient mounting strength can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view, partially in section, showing a bracket of a shock absorber according to an embodiment of the present invention.

FIG. 2 is an enlarged view showing a main part of a cross section taken along line AA of FIG. 1;

FIG. 3 shows a free state of the bracket shown in FIG. 1;
FIG.

FIG. 4 is a view similar to FIG. 2, showing another embodiment of the present invention.

FIG. 5 is a view similar to FIG. 4, but showing a state before a clamping pressure is applied to the tongue of the bracket shown in FIG. 4;

FIG. 6 is a sectional view of the outer cylinder shown in FIG.

FIG. 7 shows a free state of the bracket shown in FIG. 4;
FIG.

FIG. 8 is a view similar to FIG. 2, but showing yet another embodiment of the present invention.

9 is a cross-sectional view of the outer cylinder shown in FIG.

FIG. 10 is a view similar to FIG. 8, but showing the free state of the bracket shown in FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shock absorber 2 Outer cylinder 8 Bracket 9 Fastening hole 10 Slit 11 Tongue piece 15 Pressing surface

Claims (2)

[Claims] The present invention comprises a fastening hole into which an outer cylinder of a shock absorber is inserted, a slit communicating with the fastening hole and opening to the outer periphery, and tongue pieces formed on both sides of the slit. A clamping force is applied to the shock absorber by reducing the width of the slit by applying a clamping pressure, and attached to the shock absorber.
In the bracket of the shock absorber, at least one of the pressing surfaces of the tongue to which the clamping pressure is applied is close to the center line of the slit on the side close to the fastening hole and in the side far from the fastening hole in the free state of the tongue. A bracket for a shock absorber characterized by being inclined away from the center line. 2. A fastening hole into which an outer cylinder of the shock absorber is inserted, a slit communicating with the fastening hole and opening to the outer periphery, and tongue pieces formed on both sides of the slit. A clamping force is applied to the shock absorber by reducing the width of the slit by applying a clamping pressure, and attached to the shock absorber.
In the bracket of the shock absorber, the inside dimension of the fastening hole is smaller than the outside dimension of the outer cylinder of the shock absorber in a direction substantially coinciding with the center line of the slit, and outside the shock absorber in a direction substantially orthogonal to the center line of the slit. A bracket for a shock absorber, wherein the bracket is formed to have a size equal to or larger than an outer dimension of a cylinder.