JPS6018661Y2 - Universal joint for vibration and noise prevention - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a universal joint used for a drive shaft, an operation shaft, etc. of a vehicle such as an automobile.

As shown in FIGS. 1 and 2, in the conventional pot joint, a pin 2 is press-fitted into a through hole 1a provided in a shaft 1, and bearing blocks 3 are fitted into both ends of the pin 2. 3 are respectively incorporated into the grooves 5 of the cylindrical member 4 to form a universal joint, and the shaft 1 is inserted around the axis of the pin 2 and the outer end surface of the bearing block 3 is in contact with the inner surface of the cover 6, while the shaft 1 is inserted into the cylindrical member 4. It can swing within the cylindrical hole 7 and can also slide along the groove 5 of the cylindrical member 4.

However, due to dimensional accuracy, wear, etc., there is a gap between the pin 2 and the bearing block 3 at the fitting part, and from the shaft 1 (or the cylindrical member 4) to the cylindrical member 4 (
Or, if the torque transmitted to shaft 1) fluctuates,
If there is such a gap, there is a drawback that undesirable vibrations and noise are generated at the same time as impact is applied.

The present invention solves the above problems and consists of a shaft, a pin protruding from the end of the coaxial in a direction substantially perpendicular to the axis, a bearing block that fits into the pin, and a cylindrical shape into which the end of the coaxial fits inside. and a notch provided on the inner wall of the cylindrical member, extending parallel to the central axis of the cylindrical member, and into which the bearing block is slidably fitted; A through-hole is provided at both ends of the pin into which the pin is inserted, and the elastic member is inserted into the through-hole, and an elastic member longer than the length of the through-hole is inserted into the through-hole. The gist of this is a universal joint for vibration and noise prevention, characterized in that both ends of the elastic member are configured to elastically contact the inner surface of the bearing block, and the elastic member prevents vibrations and noise generated between the bearing block and the pin. This has the effect of preventing noise.

An embodiment of the present invention will be described with reference to FIGS. 3 and 4.

Note that parts or portions that are substantially the same as those of the conventional device are designated by the same reference numerals, and explanations thereof will be omitted.

At both ends of the pin 2 into which the bearing block 3 is fitted, through holes 12 are provided which are bored approximately perpendicular to the axis of the shaft 1 and the axis of the pin 2, respectively, and an elastic member longer than the length of the through hole 12 is provided in the through hole 12. 9 is inserted, and when the bearing block 3 is assembled into the pin 2, the elastic member 9 is compressed, and the elastic member 9 is press-fitted into the through hole 12 of the pin 2, and the elastic member 9 is inserted. It is attached so that both ends are in contact with the inner circumferential surface 10 of the bearing block 3.

The material of the elastic member 9 is rubber, synthetic resin, etc., and the elastic member 9 presses the bearing block 3 to the extent that rotation of the pin 2 and the bearing block 3 is not hindered.

[Brief explanation of drawings]

Fig. 1 is a longitudinal side view showing a conventional pot joint, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, Fig. 3 is a longitudinal side view showing an embodiment of the present invention, and Fig. 4 The diagram is IV- in Figure 3.
FIG. 3 is a sectional view taken along line IV. 1...Axis, 2...Pin, 3...
・Bearing block, 4...Cylindrical member, 9・
...Elastic member.

Claims (1)

[Scope of utility model registration request] A shaft, a pin protruding from the end of the coaxial in a direction substantially perpendicular to the axis, a bearing block that fits into the pin, a cylindrical member into which the end of the coaxial is fitted, and a pin provided on the inner wall of the cylindrical member. The universal joint includes a notch extending parallel to the central axis of the cylindrical member and into which the bearing block is slidably fitted, at both ends of the pin into which the bearing block is fitted. , a through hole is formed substantially perpendicular to the axis of the shaft and the axis of the pin, and an elastic member longer than the length of the through hole is inserted into the through hole, and both ends of the elastic member are connected to the bearing block. A universal joint for vibration and noise prevention characterized by being configured so that it comes into elastic contact with the inner surface of the.