JPH05500260A - Ball joint with integrated buffer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention simultaneously ensures the connection and connection of various control or connection rod members. It relates to a type of ball joint used for

Such rod members connected by spherical members are used in various machines and in automobiles. Among them are well known.

Currently, most ball and socket joints are Manufactured by sea urchins. Such a known joint can be easily attached to a joint casing of a rod member. It has the essential advantage that it can be placed on a spherical member. on the other hand, The fittings can be disassembled, but more force is required to disassemble them. As a result, the assembly This makes assembly easier and increases assembly reliability. Because the casing is not damaged , can be reused. This reduces costs and increases safety.

Particularly in automobiles, a buffer system is interposed between the control lever and the transmission. There may be cases where it is necessary to further reduce noise or vibration.

One of the known solutions to achieve this purpose is to use an elastic silent blower. It consists of interposing an auxiliary member with a hook. This known solution reduces noise and Although it is possible to obtain desirable results in terms of alleviating vibrations and vibrations, It is expensive and has a number of drawbacks. In particular, the point that the connection is only in one plane, After placing the joint on the rotating shaft, it is necessary to add a block system to prevent it from falling off. The point that Add an intermediate ring to allow the shock absorber to be placed on the link rod of the rod member. point, In this known system, during use there is a Corrosion and, in some cases, seizure may occur (thereby impeding the good operation of the fitting). The disadvantage is that it has been confirmed that

The present invention provides a new type of ball and socket joint with an integrated resilient damper, This is an attempt to solve the above drawbacks.

The improved ball and socket joint of the present invention consists of a molded part within a rigid casing. It has a spherical bearing, and is assembled by forcibly inserting a male spherical member into the bearing. the casing is made of elastic material. surrounded by a shock absorber and joined to the shock absorber, and the outer periphery of the shock absorber is surrounded by a support sleeve. It is characterized by being fixed inside.

According to one embodiment of the invention, the buffer consists of rubber or the like. It consists of a ring, and a part of the buffer is a part of the casing surrounded by the buffer. On the outer surface, another part is molded onto the inner surface of the support sleeve.

According to one embodiment of the invention, the elastic shock absorber has an annular shape, and the inside of the shock absorber has an annular shape. There are deformable recesses distributed throughout.

According to one embodiment of the invention, the outer periphery of the bearing is located in the casing at the back of the base of the bearing. capable of sliding on the inner surface of the casing against a supported elastic plate. It has become.

According to one embodiment of the invention, the bearing has a slit extending over its entire height; Therefore, deformation of the bearing is facilitated when fitting the spherical member.

The attached drawings are provided as non-restrictive examples and illustrate the features of the invention and what can be achieved by the invention. This will enable you to better understand the benefits that can be obtained.

1 to 4 illustrate the manufacture of a casing with a shock absorber incorporated according to the invention. FIG. 3 is a perspective cross-sectional view showing successive steps.

5 to 7 illustrate the assembly operation of the ball shaft according to the present invention.

As shown in FIG. 1, a metal bar 2 is attached laterally to the metal support sleeve 1. are combined. A casing 3 is provided inside the sleeve 1. A shock absorber 4 made of a flexible material such as rubber or plastic material is installed in the ring. Firmly joined by molding, gluing, curing, or other means.

The sleeve 1 is in the form of a piece of a cylindrical body of revolution.

The casing 3 is also cylindrical, but its lower part is a hammered truncated cone 5. that circle Preferably, the cylindrical upper part 6 projects above the sleeve 1.

The damper 4 occupies an annular gap located between the sleeve 1 and the casing 3.

It is preferable to form recesses 7 and 8 in the buffer, and the number, shape, and distribution of the recesses 7 and 8 are determined by It can be selected depending on the desired elastic properties and cushioning properties.

From top to bottom (Fig. 2, arrow 9), a spherical bearing 10 is installed inside the casing 3. Insert so that the seat 11 opens downward. And the flat area located at the top The base 12 is configured such that the truncated conical protrusion 13 of the bearing 10 fits into the hammered truncated cone 5. It is located under the upper part 6 while it returns to the upper part 6 and maintains the tension state.

The bearing 10 can be made of known synthetic materials, such as superpolyamide. can. The material splits laterally along a slit 14 through the entire thickness of its inner wall. It shows the characteristic that The slit 14 is preferably oblique or spiral. . Also, the diameter 15 of the opening of the catch 11 is smaller than the diameter 16 of this spherical catch ( Figure 3).

Due to the presence of this slit 14, the bearing 10 can be obtained only by the properties of its constituent materials. It shows better deformability than .

A leaf spring 17 of a type called a "linear leaf spring" is disposed on the base 12, for example. Ru. The outer circumference of such a spring has alternating upward (wings 18) and downward (j!) directions. 19) is known to have large sloping wings cut out. therefore , the downwardly directed wings 19 are supported on the base 12, while the upwardly directed wings 18 are supported on the inner wall of the upper part 6. and keep it facing upward (Figure 3).

The inner wall of the upper part 6 is rolled inward and downward until it presses against the top of the upwardly facing wing 18. (Fig. 4, arrow 20), this results in a pressing flange 21 on top of the upwardly directed wing 18. It is formed.

The seat 11 can receive a male spherical member 22 joined to a metal rod 23. It is now possible to The diameter 24 of the spherical member 22 is the diameter 24 of the bearing 13 in a stationary state. The diameter is almost the same as 1G.

The action is described below.

The spherical member 22 is placed under the opening of the seat 11 in order to arrange the member. (FIG. 5), and then forcibly pushed into the catch seat 11 (FIG. 6, arrow 25).

At this time, due to the compression of the spring 17 between the flange 21 and the flat base 12, the bearing 1 3 slides inside the casing 3 and rises.

As a result, the truncated conical protrusion 13 moves upward toward the hammered truncated cone 5 that was fitted. The spherical member 22 is then pulled in through the narrowed inlet of the seat 11. The slit 14 widens until it can be torn open. .

When the spherical member 22 is placed in the seat 11 (FIG. 7), the assembly is completed. Below Afterwards, the bar 2 and the rod 23 are connected by a ball joint. Spring 17 is below bearing 10 The protruding part of the bearing 10 is pushed into the hammered cone 5 again. It is inserted and fitted with the hammered cone 5.

Among the advantages of this joint, the following points are noteworthy: Mechanism 5.13.17 alone prevents the spherical member 22 from accidentally falling off from its bearing 13. The point that it is completely preventable, Does not require any auxiliary block system and eliminates corrosion problems with known fittings. There is no need for any intermediate rings of the kind known to cause The point is that the cut 14 can deform, i.e. it can open up more or less as the material ages. Therefore, the bearing 13 may gradually tighten the spherical member 22 over time. and thus the harmful rotation of the bearing 13 within the casing 3 is prevented. The point that the result is avoided, The metal spring 17 has high temperature durability and is a heat shield plate that protects the base 12 of the bearing 13. These are the points that make up the

international search report international search report FR9QOOO5S

Claims (1)

[Claims] 1. It has a spherical bearing (10) made of synthetic material provided in a casing (3). , by forcibly inserting the male spherical member (22) into the seat (11) of the bearing. In a ball joint that is assembled by surrounded by and joined to a shock absorber (4) made of an elastic material; A ball joint characterized in that the outer periphery of (4) is fixed within the support sleeve (1). . 2. The buffer (4) is composed of a ring made of rubber or a similar material. A part of the buffer is placed on the outer surface of the casing (3) surrounded by the buffer. , the other part is formed on the inner surface of the support sleeve (1). The ball joint according to claim 1, wherein: 3. Deformable recesses (7) and (8) are distributed and provided within the buffer. The ball joint according to claim 1 or 2, characterized in that: 4. The outer periphery of the bearing (10) is connected to the base (12) of the bearing (10) and the casing. against the elastic plate (7) supported between the stopper provided on the ring (3), It is characterized in that it can slide on the inner surface of the casing (3). The ball joint according to any one of claims 1 to 3, characterized in that 5. The stopper of the casing (3) is connected to the inwardly rolled flange (21). ) The ball joint according to claim 4. 6. When the bearing (10) forcibly fits the spherical member into the bearing, A slit (14) extending over the entire height of the bearing is provided to promote deformation of the bearing. The ball joint according to any one of claims 1 to 5, characterized in that: 7. The peripheral edge of the opening of the bearing (10) is pressed forward under the elastic stress of the spring (17). a convergent circle adapted to fit within the hammered cone (5) of the casing (3); Any one of claims 1 to 6, characterized in that it is a frustum-shaped protrusion (13). Ball joint as described.