Damping block structure and constant velocity joint driving shaft assembly

Abstract

The utility model discloses a damping block structure and a constant velocity joint driving shaft assembly, which comprise a shell structure, and are characterized in that the shell structure is provided with a shaft hole arranged on a constant velocity joint driving shaft, the shell structure comprises a first connecting part and a second connecting part which are detachably connected, the first connecting part is provided with a mounting groove, and the second connecting part is provided with a second mounting groove. And a plurality of damping springs are arranged in the mounting groove. The damping block structure and the constant velocity joint driving shaft assembly are simple in structure, good in damping effect, small in vibration amplitude during driving, high in practicability and good in application prospect.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and more specifically relates to a damping block structure and a constant velocity joint drive shaft assembly with the damping block structure. Background Art

[0002] When a car is driving on a road with poor terrain, the car body and chassis will vibrate violently, and the constant velocity joint drive shaft assembly on the car chassis will also vibrate accordingly. Even if a vibration damping block has been installed on the constant velocity joint drive shaft assembly, the vibration damping block currently installed on the constant velocity joint drive shaft has a relatively simple structure and a poor vibration reduction effect, resulting in a large vibration amplitude of the constant velocity joint drive shaft assembly when the car is driving, which needs further improvement.

[0003] Publication No. (CN 104847842 A) The present invention relates to a constant velocity joint drive shaft assembly with good shock absorption effect, comprising a tripod universal joint, a ball cage universal joint, an input shaft, an output shaft and an intermediate shaft, wherein the tripod universal joint comprises a telescopic end housing, a tripod assembly and a telescopic end dust cover, wherein the ball cage universal joint comprises a fixed end housing, a ball cage assembly and a fixed end dust cover, wherein damping devices are respectively arranged at positions of the intermediate shaft near the telescopic end dust cover and the fixed end dust cover, wherein the damping devices are composed of a plurality of active damping plates, a plurality of passive damping plates, a first clamping ring and a second clamping ring, wherein the plurality of active damping plates and the plurality of passive damping plates are mutually spaced and stacked and arranged between the first clamping ring and the second clamping ring. The constant velocity joint drive shaft assembly has a damping plate, but its shock absorption effect is poor in actual use and cannot meet the existing shock absorption requirements. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art and provide a damping block structure and a constant velocity joint drive shaft assembly which have simple structure, good shock absorption effect and small vibration amplitude during driving.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: the damping block structure provided includes a shell structure, which is characterized in that: the shell structure is provided with an axial hole installed on the constant velocity joint drive shaft, the shell structure includes a first connecting part and a second connecting part that are detachably connected, the first connecting part is provided with an installation groove, and a plurality of shock-absorbing springs are provided in the installation groove.

[0006] In order to make the above technical solution more detailed and specific, the utility model also provides the following further preferred technical solutions to obtain satisfactory practical effects:

[0007] The first connection portion and the second connection portion are connected by threads.

[0008] A threaded connection block is provided at the connection end of the second connection part, and a threaded section is provided in the circumferential direction of the protruding end of the threaded connection block, which is matched and connected with the internal thread provided at the connection end of the first connection part.

[0009] The threaded connection block is an annular structure embedded in the second connection portion and is vulcanized together with the second connection portion.

[0010] A plurality of symmetrically arranged mounting grooves are provided on the first connecting portion, a spring base is provided in each mounting groove, a plurality of spaced mounting shafts are provided on the spring base, and the damping springs are correspondingly mounted on the mounting shafts.

[0011] A threaded hole for installing an adjusting bolt is provided on the side wall of the first connecting portion, and the adjusting bolt is installed in the threaded hole opposite to the shock absorbing spring.

[0012] The mounting groove is provided with limiting protrusions at both ends of the spring base.

[0013] A constant velocity joint drive shaft assembly comprises a constant velocity joint drive shaft, an outer ball cage and an inner ball cage, wherein the outer ball cage is connected to one end of the constant velocity joint drive shaft, the inner ball cage is connected to the other end of the constant velocity joint drive shaft, and a damping block structure is installed on the constant velocity joint drive shaft.

[0014] The damping block structure is fixedly sleeved on the constant velocity joint drive shaft through first clamps located at both ends thereof.

[0015] The constant velocity joint drive shaft assembly also includes a first dust cover and a second dust cover, one end of the first dust cover is sleeved on the mating part of the outer ball cage and fixed by a second clamp, and the other end of the first dust cover is sleeved on the constant velocity joint drive shaft and fixed by a third clamp; one end of the second dust cover is sleeved on the inner ball cage and fixed by a fourth clamp, and the other end of the second dust cover is sleeved on the constant velocity joint drive shaft and fixed by a fifth clamp.

[0016] Compared with the prior art, the utility model has the following advantages: the damping block structure and the constant velocity joint drive shaft assembly of the utility model have simple structure, good shock absorption effect, small vibration amplitude during driving, strong practicality and good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following is a brief description of the contents and symbols in the drawings of this specification:

[0018] Figure 1 This is a schematic diagram of the structure of the damping block of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the damping block of the utility model;

[0020] Figure 3for Figure 2 A partial enlarged schematic diagram in the middle;

[0021] Figure 4 It is a schematic diagram of the structure of the medium speed joint drive shaft assembly of the utility model.

[0022] Markings in the figure are: 1. constant velocity joint drive shaft; 2. outer ball cage; 3. inner ball cage; 4. damping block structure; 5. first connecting part; 6. second connecting part; 61. threaded connecting block; 7. mounting groove; 8. limiting protrusion; 9. spring base; 10. mounting shaft; 11. shock-absorbing spring; 12. threaded hole; 13. adjusting bolt; 14. first clamp; 15. first dust cover; 16. second dust cover; 17. second clamp; 18. third clamp; 19. fourth clamp; 20. fifth clamp; 21. built-in clamp ring. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0025] The utility model damping block structure, such as Figure 1 , 2 As shown in , the damping block structure 4 is a hollow shell structure, and the shell structure is provided with an axial hole for fitting on the constant velocity joint drive shaft 1. The shell structure of the damping block structure 4 includes a first connecting portion 5 and a second connecting portion 6 that are detachably connected, such as threaded connection or rotational clamping; in this embodiment, the first connecting portion 5 and the second connecting portion 6 are connected by threads. A threaded connecting block 61 is provided at the connecting end of the second connecting portion 6. The threaded connecting block 61 is an annular structure embedded in the second connecting portion 6 and is vulcanized together with the second connecting portion 6. A threaded section is provided in the circumferential direction of the protruding end of the threaded connecting block 61, which is fitted and connected with the internal thread provided at the connecting end of the first connecting portion 5.

[0026] In the utility model, a mounting groove 7 is provided on the first connecting portion 5, and a plurality of damping springs 11 are provided in the mounting groove 7 and are arranged radially along the first connecting portion 5. In this embodiment, two mounting grooves 7 are symmetrically arranged on the first connecting portion 5, and a spring base 9 is provided in each mounting groove 7. A plurality of mounting shafts 10 arranged at intervals are provided on the spring base 9, and the damping springs 11 are correspondingly installed on the mounting shafts 10. A threaded hole 12 for installing an adjusting bolt is provided on the side wall of the first connecting portion 5, and an adjusting bolt 13 is installed in the threaded hole 12, opposite to the damping spring 11, and the compression amount of the spring can be controlled by adjusting the adjusting bolt 12.

[0027] like Figure 3 As shown in the figure, a pair of limiting protrusions 8 are correspondingly integrally formed in each mounting groove 7, the limiting protrusions 8 are arranged at both ends of the spring base 9, and are limited by the corresponding limiting protrusions 8, at least three mounting shafts 10 are also integrally formed on each spring base 9, and a damping spring 11 is correspondingly installed on each mounting shaft 10, and threaded holes 12 corresponding to the above-mentioned damping springs 11 are also opened on the side wall of the first connecting portion 5, and an adjusting bolt 13 is correspondingly screwed on each threaded hole 12, and one side end of each adjusting bolt 13 corresponds to the damping spring 11 for adjusting and controlling the damping spring 11.

[0028] In the present invention, a built-in clamp ring 21 is provided at the open end of the first connection part 5 connected to the second connection part 6 to limit the installation position of the first connection part 5 and the second connection part 6. Clamp grooves for installing the first clamp 14 are provided at both ends of the first connection part 5 and the second connection part 6.

[0029] The utility model provides a damping block structure, which is installed on a constant velocity joint drive shaft assembly, so that the vibration amplitude is smaller during driving and a better shock absorption effect is obtained.

[0030] The utility model also provides a constant velocity joint drive shaft assembly with a damping block structure, such as Figure 4 As shown in the figure, it includes a constant velocity joint drive shaft 1, an outer ball cage 2 and an inner ball cage 3, the outer ball cage 2 is connected to one end of the constant velocity joint drive shaft 1, the inner ball cage 3 is connected to the other end of the constant velocity joint drive shaft 1, and a damping block structure 4 is installed on the constant velocity joint drive shaft 1. In the utility model, the damping block structure 4 is fixedly sleeved on the constant velocity joint drive shaft 1 through the first clamps 14 located at both ends thereof.

[0031] In the utility model, the constant velocity joint drive shaft assembly also includes a first dust cover 15 and a second dust cover 16, one end of the first dust cover 15 is sleeved on the mating part of the outer ball cage 2 and fixed by a second clamp 17, and the other end thereof is sleeved on the constant velocity joint drive shaft 1 and fixed by a third clamp 18, one end of the second dust cover 16 is sleeved on the inner ball cage 3 and fixed by a fourth clamp 19, and the other end thereof is sleeved on the constant velocity joint drive shaft 1 and fixed by a fifth clamp 20.

[0032] The utility model is designed to provide a constant velocity joint drive shaft assembly with a damping block structure, comprising a constant velocity joint drive shaft 1, an outer ball cage 2 and an inner ball cage 3, wherein the outer ball cage 2 is connected to one end of the constant velocity joint drive shaft 1, and the inner ball cage 3 is connected to the other end of the constant velocity joint drive shaft 1, and a damping block structure 4 is also installed on the constant velocity joint drive shaft 1, wherein the damping block structure 4 comprises a first connecting portion 5 and a second connecting portion 6 connected by threads, wherein a pair of mounting grooves 7 are provided at the first connecting portion 5, wherein the pair of mounting grooves 7 are symmetrically arranged, and a corresponding integral injection molded part is provided in each mounting groove 7. A pair of limiting protrusions 8 are formed in plastic, and a spring base 9 is correspondingly arranged in each installation groove 7. Each spring base 9 is limited by a corresponding limiting protrusion 8. At least three installation shafts 10 are integrally formed on each spring base 9, and a damping spring 11 is correspondingly installed on each installation shaft 10. Threaded holes 12 corresponding to the above-mentioned damping springs 11 are also opened on the side wall of the first connecting portion 5. Each threaded hole 12 is correspondingly screwed with an adjusting bolt 13, and one end of each adjusting bolt 13 is correspondingly abutted against the damping spring 11. The damping block structure 4 is fixedly sleeved on the constant velocity joint drive shaft 1 through the first clamps 14 located at both ends thereof.

[0033] In the utility model, the installation process of the damping spring 11 and its components is as follows: when the damping block has not yet been installed on the constant velocity joint drive shaft 1, the threaded connection between the first connection part 5 and the second connection part 6 of the damping block is opened, and the two spring bases 9 are respectively installed to the positions limited by the limit protrusions 8 in the installation groove 7 on the first connection part 5, and then the first connection part 5 and the second connection part 6 are screwed and tightened, and then the damping spring 11 is installed from the threaded hole 12 on the first connection part 5, and the damping spring 11 is sleeved on the installation shaft 10, and then the adjusting bolt 13 is tightened to abut against the damping spring 11. After the installation of multiple damping springs is completed in sequence as described above, the installation of the damping block structure 4 is completed. Finally, the damping block structure 4 is installed on the constant velocity joint drive shaft 1 to form a constant velocity joint drive shaft assembly.

[0034] When the car is driving, the constant velocity joint drive shaft assembly bumps up and down with the car body. When the constant velocity joint drive shaft 1 vibrates vertically, the damping block is subjected to vertical axial force. Each damping spring 11 in the installation slot 7 will decompose this force. The damping spring 11 is compressed under the action of the component force. After the car is parked stably, these damping springs will return to their original state under the action of the spring restoring force. The damping effect can be effectively adjusted by controlling the extension length of the adjusting bolt 13 to ensure that the damping effect of the damping block reaches the best state.

[0035] The utility model obtains a constant velocity joint drive shaft assembly with a damping block structure, which effectively weakens the radial vibration of the constant velocity joint drive shaft by reasonably arranging a damping spring 11 at the mounting groove 7 of the damping block. Secondly, the damping block of this structure is convenient for repairing and replacing the spring, and has a longer service life, thereby ensuring the long-term stable transportation of the constant velocity joint drive shaft assembly.

[0036] By arranging a damping spring at the mounting groove of the damping block structure, the vibration of the constant velocity joint drive shaft in the radial direction is effectively weakened. Secondly, the damping block of the structure has a longer service life, ensuring the long-term stable transportation of the constant velocity joint drive shaft assembly. The utility model damping block structure and constant velocity joint drive shaft assembly have a simple structure, good shock absorption effect, small vibration amplitude during driving, strong practicality and good application prospects.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The present invention is described above by way of example in conjunction with the accompanying drawings, but the present invention is not limited to the above manner. As long as various non-substantial improvements made using the method concept and technical solution of the present invention or direct applications to other occasions are made, they all fall within the protection scope of the present invention.

Claims

1. A damping block structure, comprising a shell structure, characterized in that: The housing structure is provided with an axial hole installed on the constant velocity joint drive shaft. The housing structure includes a first connecting part and a second connecting part that are detachably connected. The first connecting part is provided with an installation groove, and a plurality of shock-absorbing springs are arranged in the installation groove.

2. The damping block structure according to claim 1, characterized in that: The first connection portion and the second connection portion are connected by threads.

3. The damping block structure according to claim 2, characterized in that: A threaded connection block is provided at the connection end of the second connection part, and a threaded section is provided in the circumferential direction of the protruding end of the threaded connection block, which is matched and connected with the internal thread provided at the connection end of the first connection part.

4. The damping block structure according to claim 3, characterized in that: The threaded connection block is an annular structure embedded in the second connection portion and is vulcanized together with the second connection portion.

5. The damping block structure according to any one of claims 1 to 4, characterized in that: A plurality of symmetrically arranged mounting grooves are provided on the first connecting portion, a spring base is provided in each mounting groove, a plurality of spaced mounting shafts are provided on the spring base, and the damping springs are correspondingly mounted on the mounting shafts.

6. The damping block structure according to claim 5, characterized in that: A threaded hole for installing an adjusting bolt is provided on the side wall of the first connecting portion, and the adjusting bolt is installed in the threaded hole opposite to the shock absorbing spring.

7. The damping block structure according to claim 5, characterized in that: The mounting groove is provided with limiting protrusions at both ends of the spring base.

8. A constant velocity joint drive shaft assembly having a damping block structure as claimed in any one of claims 1 to 7, characterized in that: It comprises a constant velocity joint drive shaft, an outer ball cage and an inner ball cage, wherein the outer ball cage is connected to one end of the constant velocity joint drive shaft, the inner ball cage is connected to the other end of the constant velocity joint drive shaft, and a damping block structure is installed on the constant velocity joint drive shaft.

9. The constant velocity joint drive shaft assembly according to claim 8, characterized in that: The damping block structure is fixedly sleeved on the constant velocity joint drive shaft through first clamps located at both ends thereof.

10. The constant velocity joint drive shaft assembly according to claim 9, characterized in that: The constant velocity joint drive shaft assembly also includes a first dust cover and a second dust cover, one end of the first dust cover is sleeved on the mating part of the outer ball cage and fixed by a second clamp, and the other end of the first dust cover is sleeved on the constant velocity joint drive shaft and fixed by a third clamp; one end of the second dust cover is sleeved on the inner ball cage and fixed by a fourth clamp, and the other end of the second dust cover is sleeved on the constant velocity joint drive shaft and fixed by a fifth clamp.

Images