Intermediate shaft assembly with sealing and noise reduction functions

Abstract

The utility model discloses an intermediate shaft assembly with sealing and noise reduction functions, and relates to the technical field of intermediate shaft assemblies, the intermediate shaft assembly comprises a spline sleeve main body and a sealing ring, an internal spline main body is arranged in the spline sleeve main body, a spline shaft main body is connected in the spline sleeve main body, an external spline main body is additionally arranged outside the spline shaft main body, and the sealing ring is arranged in the spline sleeve main body. Meanwhile, a mounting sealing groove is formed in the external spline main body, a sealing ring is connected to the exterior of the mounting sealing groove, a shaft fork main body is connected to the front end of the spline sleeve main body, mounting through holes are formed in the two sides in the shaft fork main body, limiting sliding grooves are formed in the middle ends in the mounting through holes, and meanwhile movable balls are connected to the interiors of the limiting sliding grooves; and a cross shaft main body is connected into the shaft fork main body. According to the intermediate shaft assembly with the sealing and noise reduction functions, the sealing performance of the intermediate shaft assembly in the using process can be improved, so that the using effect of noise reduction is achieved, and the practicability of the intermediate shaft assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of intermediate shaft assemblies, and specifically relates to an intermediate shaft assembly with a sealing and noise reduction function. Background Technique

[0002] The intermediate shaft assembly refers to a shaft in an automobile transmission. The shaft itself is integrated with gears. Its main function is to connect the first shaft and the second shaft. By changing the shift lever, it is possible to select to engage with different gears, so that the second shaft can output different rotational speeds, directions, and torques. Since the shape of the intermediate shaft resembles a tower, it is also called a "pagoda tooth". In order to improve the use efficiency of the automobile, an intermediate shaft assembly is required. However, the existing intermediate shaft assemblies still have the following deficiencies:

[0003] For example, the utility model with the application number 201921212450.1 discloses an intermediate shaft assembly. The intermediate support member of this utility model has a through hole for allowing the shaft member to be inserted, so that the intermediate support member is sleeved on the shaft member. However, for comparative documents similar to the above application, when the existing intermediate shaft assembly is in use, due to the general sealing effect of most intermediate shaft assemblies, the intermediate shaft assembly is prone to sound leakage during use, resulting in a decrease in the practicality and use efficiency of the intermediate shaft assembly.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and an intermediate shaft assembly with a sealing and noise reduction function is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide an intermediate shaft assembly with a sealing and noise reduction function to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an intermediate shaft assembly with a sealing and noise reduction function, including a spline sleeve main body and a sealing ring. An internal spline main body is arranged inside the spline sleeve main body, and a spline shaft main body is connected inside the spline sleeve main body. An external spline main body is additionally provided outside the spline shaft main body. An installation sealing groove is arranged inside the external spline main body, and a sealing ring is connected outside the installation sealing groove. The front end of the spline sleeve main body is connected with a shaft fork main body. Installation through holes are opened on both sides inside the shaft fork main body. A limiting sliding groove is opened in the middle of the installation through hole. A movable ball is connected inside the limiting sliding groove. A cross shaft main body is connected inside the shaft fork main body. An installation docking groove is opened outside the cross shaft main body. A flange fork main body is connected outside the cross shaft main body.

[0007] Furthermore, the internal dimension of the spline sleeve main body is adapted to the external dimension of the spline shaft main body, and the spline shaft main body is embeddedly connected with the spline sleeve main body.

[0008] Furthermore, the internal dimensions of the internal spline body are adapted to the external dimensions of the external spline body, and the external spline body is slidably connected to the spline sleeve body through the internal spline body.

[0009] Furthermore, the external dimensions of the installation sealing groove are adapted to the internal dimensions of the sealing ring, and the sealing ring is connected to the external spline body through the installation sealing groove.

[0010] Furthermore, the number of the sealing rings is two, and the two sealing rings are symmetrically arranged on both sides inside the external spline body with respect to the front central axis of the external spline body.

[0011] Furthermore, the internal dimensions of the installation through-hole are adapted to the external dimensions of the cross shaft body, and the cross shaft body is connected to the shaft fork body through the installation through-hole.

[0012] Furthermore, the external dimensions of the movable ball are adapted to the internal dimensions of the limiting sliding groove, and the movable ball is embedded in the shaft fork body through the limiting sliding groove.

[0013] Furthermore, the flange fork body and the shaft fork body are cross-distributed in a cross shape, and the flange fork body is connected to the shaft fork body through the cross shaft body.

[0014] The utility model provides an intermediate shaft assembly with a sealing and noise reduction function, and has the following beneficial effects:

[0015] 1. Through the arrangement of the sealing ring, when the intermediate shaft assembly with a sealing and noise reduction function is used, the spline shaft body can be slidably installed into the spline sleeve body through the internal spline body. At the same time, the external spline body matches the internal spline body, thereby increasing the stability when the spline shaft body is connected to the spline sleeve body. The sealing ring is installed outside the external spline body through the installation sealing groove, and the sealing performance during the use of the intermediate shaft assembly is increased through the two sealing rings, thereby avoiding sound leakage and improving the noise reduction performance during the use of the intermediate shaft assembly.

[0016] 2. Through the arrangement of the movable ball, when the intermediate shaft assembly with a sealing and noise reduction function is used, the cross shaft body can be snap-fitted into the shaft fork body through the installation through-holes opened on both sides inside the shaft fork body, and the installation docking groove opened outside the cross shaft body is docked with the limiting sliding groove opened inside the shaft fork body, so that the movable balls added inside the limiting sliding groove rotate inside the installation docking groove accordingly. The flange fork body is connected to the outside of the cross shaft body, thereby reducing the friction force during rotation in cooperation with the movable balls and improving the overall use efficiency of the intermediate shaft assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1Schematic three-dimensional structure diagram of an intermediate shaft assembly with a sealing and noise reduction function according to the present utility model;

[0018] Figure 2 Schematic three-dimensional unfolded structure diagram of a sealing ring of an intermediate shaft assembly with a sealing and noise reduction function according to the present utility model;

[0019] Figure 3 Schematic three-dimensional unfolded structure diagram of a cross shaft main body of an intermediate shaft assembly with a sealing and noise reduction function according to the present utility model.

[0020] In the figure: 1. Spline sleeve main body; 2. Inner spline main body; 3. Spline shaft main body; 4. Outer spline main body; 5. Installation sealing groove; 6. Sealing ring; 7. Shaft fork main body; 8. Installation through hole; 9. Limit sliding groove; 10. Movable ball; 11. Cross shaft main body; 12. Installation docking groove; 13. Flange fork main body. Specific embodiments

[0021] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0022] As Figure 1 and Figure 2 shown, an intermediate shaft assembly with a sealing and noise reduction function includes a spline sleeve main body 1 and a sealing ring 6. An inner spline main body 2 is arranged inside the spline sleeve main body 1, and a spline shaft main body 3 is connected inside the spline sleeve main body 1. An outer spline main body 4 is additionally arranged outside the spline shaft main body 3. At the same time, an installation sealing groove 5 is arranged inside the outer spline main body 4, and a sealing ring 6 is connected outside the installation sealing groove 5. The internal dimension of the spline sleeve main body 1 is adapted to the external dimension of the spline shaft main body 3, and the spline shaft main body 3 is embeddedly connected with the spline sleeve main body 1. The internal dimension of the inner spline main body 2 is adapted to the external dimension of the outer spline main body 4, and the outer spline main body 4 is slidably connected with the spline sleeve main body 1 through the inner spline main body 2. The external dimension of the installation sealing groove 5 is adapted to the internal dimension of the sealing ring 6, and the sealing ring 6 is connected with the outer spline main body 4 through the installation sealing groove 5. The number of the sealing rings 6 is two, and the two sealing rings 6 are symmetrically arranged on both sides inside the outer spline main body 4 with respect to the front central axis of the outer spline main body 4. The spline shaft main body 3 is slidably installed inside the spline sleeve main body 1 through the inner spline main body 2. At the same time, the outer spline main body 4 matches the inner spline main body 2, so as to increase the stability when the spline shaft main body 3 is connected with the spline sleeve main body 1. The external dimension of the installation sealing groove 5 opened inside the outer spline main body 4 matches the internal dimension of the sealing ring 6, so that the sealing ring 6 is installed outside the outer spline main body 4 through the installation sealing groove 5. The sealing performance during the use of the intermediate shaft assembly is increased through the two sealing rings 6, thereby avoiding sound leakage and improving the noise reduction performance during the use of the intermediate shaft assembly.

[0023] As Figure 1 and Figure 3 shown, a shaft fork body 7 is connected to the front end of a spline sleeve body 1. Installation through holes 8 are provided on both sides inside the shaft fork body 7, and a limiting sliding groove 9 is provided in the middle of the installation through hole 8. At the same time, a movable ball 10 is connected inside the limiting sliding groove 9. A cross shaft body 11 is connected inside the shaft fork body 7. Installation docking grooves 12 are provided on the outside of the cross shaft body 11, and a flange fork body 13 is connected to the outside of the cross shaft body 11. The internal dimension of the installation through hole 8 is adapted to the external dimension of the cross shaft body 11, and the cross shaft body 11 is connected to the shaft fork body 7 through the installation through hole 8. The external dimension of the movable ball 10 is adapted to the internal dimension of the limiting sliding groove 9, and the movable ball 10 is embedded in the shaft fork body 7 through the limiting sliding groove 9. The flange fork body 13 and the shaft fork body 7 are distributed in a cross shape, and the flange fork body 13 is connected to the shaft fork body 7 through the cross shaft body 11. The cross shaft body 11 is clamped and installed inside the shaft fork body 7 through the installation through holes 8 provided on both sides inside the shaft fork body 7, and the installation docking groove 12 provided on the outside of the cross shaft body 11 is docked with the limiting sliding groove 9 provided inside the shaft fork body 7, so that the additional movable ball 10 inside the limiting sliding groove 9 rotates inside the installation docking groove 12 accordingly. The flange fork body 13 is connected to the outside of the cross shaft body 11, thereby reducing the friction during rotation in cooperation with the movable ball 10 and improving the overall service efficiency of the intermediate shaft assembly.

[0024] In summary, for the intermediate shaft assembly with the functions of sealing and noise reduction, during use, first, the spline shaft body 3 is slidably installed inside the spline sleeve body 1 through the internal spline body 2. The external dimension of the installation sealing groove 5 provided inside the external spline body 4 matches the internal dimension of the sealing ring 6. Therefore, the sealing ring 6 is installed outside the external spline body 4 through the installation sealing groove 5. The sealing performance during the use of the intermediate shaft assembly is increased through the two sealing rings 6, thereby avoiding sound leakage. Next, the cross shaft body 11 is clamped and installed inside the shaft fork body 7 through the installation through holes 8 provided on both sides inside the shaft fork body 7, and the installation docking groove 12 provided on the outside of the cross shaft body 11 is docked with the limiting sliding groove 9 provided inside the shaft fork body 7, so that the additional movable ball 10 inside the limiting sliding groove 9 rotates inside the installation docking groove 12 accordingly. The flange fork body 13 is connected to the outside of the cross shaft body 11, thereby reducing the friction during rotation in cooperation with the movable ball 10 and improving the overall service efficiency of the intermediate shaft assembly.

[0025] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present utility model and its practical applications, and to enable those of ordinary skill in the art to understand the present utility model and design various embodiments with various modifications suitable for specific purposes.

Claims

1. An intermediate shaft assembly with sealing and noise reduction function, comprising a spline sleeve body (1) and a sealing ring (6), characterized in that: The spline sleeve body (1) is provided with an inner spline body (2), and the spline sleeve body (1) is connected with a spline shaft body (3), and an outer spline body (4) is added to the outside of the spline shaft body (3), and a mounting seal groove (5) is provided inside the outer spline body (4), and a sealing ring (6) is connected to the outside of the mounting seal groove (5). The front end of the spline sleeve body (1) is connected with a shaft fork body (7), and mounting through holes (8) are provided on both sides of the shaft fork body (7), and a limiting slide groove (9) is provided at the middle end of the mounting through hole (8), and a movable ball (10) is connected to the inside of the limiting slide groove (9), and the shaft fork body (7) is connected with a cross shaft body (11), and a mounting docking groove (12) is provided outside the cross shaft body (11), and a flange fork body (13) is connected to the outside of the cross shaft body (11).

2. The intermediate shaft assembly with sealing and noise reduction function according to claim 1, characterized in that: The internal dimensions of the spline sleeve body (1) are matched to the external dimensions of the spline shaft body (3), and the spline shaft body (3) and the spline sleeve body (1) are embeddedly connected.

3. The intermediate shaft assembly with sealing and noise reduction function according to claim 1, characterized in that: The internal dimensions of the internal spline body (2) are matched to the external dimensions of the external spline body (4), and the external spline body (4) is slidably connected to the spline sleeve body (1) via the internal spline body (2).

4. The intermediate shaft assembly with sealing and noise reduction function according to claim 1, characterized in that: The outer dimensions of the installation sealing groove (5) are matched with the inner dimensions of the sealing ring (6), and the sealing ring (6) is connected to the external spline body (4) through the installation sealing groove (5).

5. The intermediate shaft assembly with sealing and noise reduction function according to claim 1, characterized in that: The number of the sealing rings (6) is two, and the two sealing rings (6) are symmetrically arranged on both sides of the interior of the external spline body (4) about the front center axis of the external spline body (4).

6. The intermediate shaft assembly with sealing and noise reduction function according to claim 1, characterized in that: The inner dimensions of the mounting through hole (8) are matched to the outer dimensions of the cross shaft body (11), and the cross shaft body (11) is connected to the shaft fork body (7) via the mounting through hole (8).

7. The intermediate shaft assembly with sealing and noise reduction function according to claim 1, characterized in that: The outer dimensions of the movable ball (10) are matched to the inner dimensions of the limiting sliding groove (9), and the movable ball (10) is embeddedly connected to the shaft fork body (7) through the limiting sliding groove (9).

8. The intermediate shaft assembly with sealing and noise reduction function according to claim 1, characterized in that: The flange fork body (13) and the shaft fork body (7) are cross-distributed, and the flange fork body (13) is connected to the shaft fork body (7) via a cross shaft body (11).

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