KR19990015653U - Tripod joint with ball assembly roller - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a tripod joint to which a ball assembly roller is applied.

2. The technical problem the invention is trying to solve

It is to achieve the stability of the device and the simplification of parts by making the roller contact in the roller housing with the contact of the roller housing and the roller housing.

3. Summary of solution of design

The ball assembly roller of the spider assembly is in close contact with the inner wall of the joint to transmit the rotational torque of the main shaft to the driven shaft; The ball assembly 23 is provided with a semicircular seating groove 32 in which the steel ball 31 is fixed to the left and right sides of the metal body in the forward body 30, and the trunnion 20 is coupled to the center thereof. (33) is provided, the inner diameter of the assembly hole 33 is processed in a straight line, the seating grooves 32 formed on the left and right sides of the main body 30, the upper surface (34) to form a valley up and down of the main body 30 ) To form the groove 32 of the connected form from the lower surface 35, the steel ball 31 inserted into the seating groove 32 is interrupted by the upper cover, the lower cover 36 of the main body 30 will be.

4. Important uses of the devise

The tripod joint applied with the ball assembly roller of the present invention is suitable for high cutting angle by reducing the induction force in the axial direction, and is a useful design that contributes to cost reduction because the assembly process is relatively simple compared to the performance.

Description

Tripod joint with ball assembly roller

The present invention relates to a tripod joint to which a ball assembly roller is applied, and more particularly, to improve the adaptability to high cutting angles by improving the shape of the roller to connect with the trunnion of the spider so that the rotation is desired. This is to reduce the unit price.

The tripod joint, which is one of the power transmission devices of a vehicle, is interposed between the main shaft that transmits the rotational force of the transmission and the driven shaft of the driving wheel. The configuration of the device is briefly described. As shown in FIG. 1, the main shaft connected to the transmission Spider assembly (1) having a fixed hole (13) of a driven shaft (12) at its center in a joint housing (11) formed in (10) and a trunnion (14) formed at equal intervals of 120 [deg.]. Is fixed.

The trunnion 14 formed at equal intervals 120 ° with respect to the fixing hole 13 in the spider assembly 1 has a spider roller 15 at the outer periphery of the trunnion 14 as shown in FIG. The spider assembly 1 allows for smooth operation in the joint housing 11.

In order to reduce frictional force generated when the spider trunnion 14 rotates, the needle roller 16 is inserted into the inner surface of the spider roller 15 to prevent heat generated by friction and performance degradation thereof.

In addition, the top of the trunnion 14 is provided with a retainer 17 and a retainer ring 18 for preventing the needle 16 from being separated.

The spider assembly 1 having the above configuration transmits torque by the roller 15, and the outer circumference of the roller 15 rolls the inner wall of the joint housing 11 so that the main shaft 10 and the driven shaft ( 12) Adapts to the occurrence of the incidence and stroke of the liver, so that it does not interfere with the operation of the car.

However, as described above, since the roller 15 angularly moves in a semi-constrained state in the joint housing 11, the induced force in the axial direction is increased, so that the yaw occurs while driving.

As described above, the yaw refers to a phenomenon in which the vehicle shakes left and right while driving, and when such yaw occurs, the riding comfort becomes uncomfortable, and vibrations occur in each part of the power transmission device of the car, which adversely affects the durability of the device. Gave birth.

Therefore, the present invention was devised to solve the above-mentioned problems, and improved the structure of the rollers, so that the contact between the joint housing and the rollers caused the rolling contact in the constrained state of the ball, thereby simplifying the stability of the device and the simplification of parts. To achieve.

1 is a cross-sectional view of the tripod joint for explaining the present invention,

2 is a front view showing a spider assembly to which the prior art is applied;

3 is a plan view showing a spider assembly to which the present invention is applied and a sectional view of a joint housing,

4 is a front view and a sectional view showing a ball assembly roller which is a main part of the present invention.

* Explanation of symbols for main parts of the drawings

11: joint housing 23: ball assembly roller

30: main body 31: steel ball

32: seating groove 33: assembly worker

36: cover

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

3 is a plan view showing a spider assembly to which the present invention is applied and a sectional view of a joint housing, and FIG. 4 is a front view and a sectional view showing a ball assembly roller that is a main part of the present invention.

The tripod joint, which is one of the automobile power transmission devices, is fixed in the joint housing to form a spider assembly which transmits the rotation torque of the main shaft to the driven shaft.

As shown in FIG. 3, the spider assembly 2 has a driven hole 12 having a fixed hole 13 at the center thereof, and a spherical trunnion 20 at an equal interval of 120 ° from the starting point. Spider 21 having a fixed to the inner wall 22 of the joint housing 11 by a ball assembly roller 23.

The ball assembly roller 23 has a steel ball 31 having a semi-circular seating groove 32 in which the steel ball 31 is fixed to the left and right sides of the metal square body 30, as shown in FIG. Only half of the insertion) is fixed, and an assembly hole 33 to which the trunnion 20 is coupled is provided at the center.

The inner diameter of the assembly hole 33 is processed in a straight line so that the spherical trunnion 20 can perform the rolling motion by the point contact.

The seating grooves 32 formed on the left and right sides of the main body 30 form grooves 32 connected from the upper surface 34 to the lower surface 35 as a valley up and down of the main body 30. And, the steel ball 31 inserted into the seating groove 32 is interrupted by the upper, lower cover 36 of the main body 30.

In order to accommodate the ball assembly roller 23 as described above, the inner wall 37 of the joint housing 11 is assembled with a half of the steel ball 31 fixed to the ball assembly 23 as shown in FIG. The mounting groove 32 is formed.

In order to configure the present invention as described above, three steel balls 31 are inserted and fixed in the seating grooves 32 formed in the square body 30.

In order to prevent the steel ball 31 inserted as described above from escaping to the outside of the main body 30, the cover 36 is interrupted by welding or the like on the upper and lower sides of the main body 30 to generate the car. The ball 31 is prevented from escaping out of the main body 30 when the joint is cut off.

As described above, the spider assembly 2 is configured to assemble the steel ball 31 to the seating groove 32 provided in the joint housing inner wall 37 to complete the assembly of the tripod joint.

The tripod joint as described above is suitable for use at high cutting angles because the relative movement between the spider and the ball assembly roller is independently performed, and can be achieved in a relatively simple process as compared with the existing high cutting angle low-energy joint.

The tripod joint applied with the ball assembly roller of the present invention configured as described above is suitable for high cutting angle by reducing the organic force in the axial direction, and is a useful design that contributes to cost reduction because the assembly process is relatively simple compared to the performance.

Claims (2)

The tripod joint is composed of a spider assembly which is connected and fixed in the housing of the joint, and the ball assembly roller of the spider assembly is in close contact with the inner wall of the joint and transmits the rotational torque of the main shaft to the driven shaft. In having a tripod joint of; The ball assembly 23 is provided with a semicircular seating groove 32 in which a steel ball 31 is fixed to a square main body 30 made of metal, and a trunnion 20 is coupled to the center thereof and the inner diameter is linearly processed. Has 33, The seating grooves 32 formed on the left and right sides of the main body 30 form valleys up and down of the main body 30 and form grooves 32 connected from the upper surface 34 to the lower surface 35, The steel ball 31 inserted into the seating groove 32 is the tripod joint to which the ball assembly roller is applied, characterized in that the upper cover, the lower cover 36 of the main body 30 is interrupted. The method of claim 1; The inner wall 37 of the joint housing 11 for accommodating the ball assembly roller 23 further includes a seating groove 32 to which the steel balls 31 fixed to the ball assembly 23 are assembled. Tripod joint with ball assembly roller.