An anti-detachment connection structure for the inner section of a constant velocity half-shaft housing

Abstract

This invention discloses an anti-detachment connection structure for the inner section of a constant velocity half-shaft housing, belonging to the technical field of constant velocity half-shafts. It includes an inner section housing, a ball ring assembly that slides within a raceway groove in the inner section housing, and a connecting ring installed at the opening of the inner section housing. The inner wall shape of the connecting ring is adapted to the outer shape of the inner section housing. Multiple limiting protrusions are spaced axially along the inner wall of the connecting ring. A baffle is integrally formed on the end face of the connecting ring, and the inner end face of the baffle forms multiple sets of limiting protrusions. Two opposing limiting protrusions form a set, and each set of limiting protrusions corresponds to one ball ring in the ball ring assembly. Each limiting protrusion includes a protrusion body extending axially towards the inner section housing. An arc-shaped surface is formed on the protrusion body. Two arc-shaped surfaces of the same set of limiting protrusions contact the two sides of the ball ring to support it. The shape of the arc-shaped surface is adapted to the outer shape of the ball ring. This invention can effectively improve the anti-detachment performance of the ball ring assembly and the housing.

Description

Technical Field

[0001] This invention belongs to the field of constant velocity half-shaft technology, specifically relating to an anti-detachment connection structure for the inner section of a constant velocity half-shaft housing. Background Technology

[0002] The constant velocity half-shaft housing is a key component of an automotive transmission system, primarily used to transmit power and ensure constant velocity motion of the wheels at different steering angles. A typical constant velocity half-shaft inner section housing usually employs a three-groove or six-ball-cage structure, with axially extending raceway grooves machined on its inner wall. The ball ring assembly is positioned by a cage and rolls along the raceway grooves to achieve efficient torque transmission. When the vehicle is traveling under complex road conditions, the ball ring assembly may overcome the cage's constraint due to excessive axial impact force, causing the ball rings to disengage from the raceway grooves of the housing, potentially leading to transmission failure or even a safety accident. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide an anti-detachment connection structure for the inner section of the constant velocity half-shaft housing, which can effectively improve the anti-detachment performance of the ball ring assembly and the housing.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This invention discloses an anti-detachment connection structure for the inner section of a constant velocity half-shaft housing, comprising an inner section housing, a ball ring assembly that slides with a raceway groove formed within the inner section housing, and a connecting ring installed at the opening of the inner section housing. The inner wall shape of the connecting ring is adapted to the outer shape of the inner section housing. Multiple limiting protrusions are spaced apart along the axial direction on the inner wall of the connecting ring. A baffle is integrally formed on the end face of the connecting ring, and multiple sets of limiting protrusions are formed on the inner end face of the baffle. Two opposing limiting protrusions form a set, and each set of limiting protrusions corresponds to one ball ring in the ball ring assembly. Each limiting protrusion includes a protrusion body that extends axially toward the inner section housing. An arc-shaped surface is formed on the protrusion body. The two arc-shaped surfaces of the same set of limiting protrusions contact the two sides of the ball ring respectively to support the ball ring. The shape of the arc-shaped surface is adapted to the outer shape of the ball ring.

[0006] Furthermore, multiple grooves are formed on the arc-shaped surface of the protruding body, and the multiple grooves are arranged at intervals along the axial direction of the inner section shell. A slider is slidably installed in the groove, and an elastic connection device is installed between the slider and the protruding body. The protruding body is made of rubber material, and an inner cavity is formed on the inner side of the protruding body, which is filled with damping fluid.

[0007] Furthermore, the damping fluid inside the protruding body is a magnetorheological fluid, and the inner cavity is connected to an annular tube through a branch pipe. The annular tube is installed in an annular groove opened on the baffle, and an electromagnetic coil is wound around the outside of the annular tube. The electromagnetic coil is connected to a power supply and a controller.

[0008] Furthermore, the surface of the slider is adapted to the surface of the ball ring, and the surface of the slider protrudes from the arc surface. The closer the slider is to the baffle, the greater the degree of protrusion from the arc surface.

[0009] Furthermore, the baffle has through holes, and elastic tubes are installed in the through holes. Elastic damping plates are installed evenly spaced along the axial direction on the inner side of the elastic tubes. Damping holes are opened on the elastic damping plates. The elastic tubes are filled with damping fluid. The elastic tubes are fixed to the baffle by locking devices. The inner end of the elastic tubes extends along the axial direction of the inner section housing. The elastic tubes are installed between the inner section housing and the ball rings, with two elastic tubes corresponding to one ball ring.

[0010] Furthermore, a liquid storage tank is rotatably fitted on the outer side of the drive shaft, and the inner side of the liquid storage tank is filled with damping fluid. An elastic tube is connected to the liquid storage tank through a corrugated connecting pipe, and a support spring is installed between the elastic tube and the liquid storage tank. The corrugated connecting pipe extends radially along the inner section of the housing. A ball groove is opened on the inner side of the liquid storage tank, and a ball is rotatably installed in the ball groove. The ball contacts the outer surface of the drive shaft.

[0011] Furthermore, an elastic hoop structure is provided on the outer side of the protruding body. The elastic hoop structure is made of elastic material and includes a ring-shaped ring. An arc-shaped groove is formed on the ring-shaped ring to make way for the inner section shell. Multiple friction plates are stacked on the ring-shaped ring, and the length of the friction plates gradually shortens radially outward.

[0012] Furthermore, the friction plate is made of an elastic material and is detachably connected to the ring by screws. The surface of the friction plate has grooves for hiding the bolts.

[0013] The beneficial effects of this invention are as follows:

[0014] This invention discloses an anti-detachment connection structure for the inner section of a constant velocity half-shaft housing. By integrally forming and installing a limiting protrusion on the inner side of the connecting ring, the ball ring is limited by two limiting protrusions in the same group, preventing the ball ring from coming out of the raceway groove of the housing during vehicle operation. Compared with the structure using a retaining ring, this not only simplifies the installation structure but also effectively improves the anti-detachment performance of the ball ring assembly and the housing.

[0015] The anti-detachment connection structure disclosed in this invention, by employing a protruding body and forming an arc-shaped surface on the protruding body that matches the surface of the ball ring, can effectively reduce structural deformation during long-term use and increase the lifespan of the device. Compared with existing connection structures, the structure operates more reliably.

[0016] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized through the following description. Attached Figure Description

[0017] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0018] Figure 1 This is a schematic diagram of the anti-detachment connection structure;

[0019] Figure 2 This is a cross-sectional view of the anti-detachment connection structure;

[0020] Figure 3 This is a schematic diagram of the connecting ring structure;

[0021] Figure 4 This is a top view of the connecting ring;

[0022] Figure 5 This is a schematic diagram of the ring-shaped tube structure;

[0023] Figure 6 This is a cross-sectional view of the protruding body;

[0024] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0025] Figure 8 This is a schematic diagram of the structure of an elastic tube;

[0026] Figure 9 This is a schematic diagram of a complete ring structure.

[0027] The following are labeled in the attached diagram: Inner section housing 1, raceway groove 2, ball ring assembly 3, connecting ring 4, limiting protrusion ring 5, baffle 6, limiting protrusion 7, protrusion body 8, arc-shaped surface 9, sliding groove 10, slider 11, elastic connecting device 12, inner cavity 13, annular tube 14, annular groove 15, electromagnetic coil 16, through hole 17, elastic tube 18, elastic damping plate 19, locking element 20, liquid storage tank 21, corrugated connecting tube 22, support spring 23, ball groove 24, ball 25, annular full circle 26, arc-shaped groove 27, friction plate 28, bolt 29. Detailed Implementation

[0028] like Figures 1-9 As shown, the present invention discloses an anti-detachment connection structure for the inner section of a constant velocity half-shaft housing, including an inner section housing 1 and a ball ring assembly 3 that slides in conjunction with a raceway groove 2 opened in the inner section housing 1. The ball ring assembly 3 is slidably installed in the raceway groove 2 and can be displaced along the axial direction of the inner section housing 1. The above structure belongs to the prior art and should be understood by those skilled in the art.

[0029] In this invention, the anti-detachment connection structure also includes a connecting ring 4 installed at the opening of the inner section housing 1. The inner wall shape of the connecting ring 4 is adapted to the outer shape of the inner section housing 1. Multiple limiting protrusions 5 are provided on the inner wall of the connecting ring 4 at intervals along the axial direction. When the connecting ring 4 is assembled on the inner section housing 1, the limiting protrusions 5 are inserted into the groove on the outside of the inner section housing 1 to achieve limiting fit.

[0030] The end face of the connecting ring 4 is integrally formed with a baffle 6. The center of the baffle 6 has a hole for the drive shaft to make way, so as to avoid interference. The inner end face of the baffle 6 forms multiple sets of limiting protrusions 7. Two opposing limiting protrusions 7 form a set. Each set of limiting protrusions 7 corresponds to one ball ring of the ball ring group 3. The specific setting position is shown in the figure. The limiting protrusion 7 includes a protrusion body 8, which extends axially toward the inner section housing 1. An arc-shaped surface 9 is formed on the protrusion body 8. The two arc-shaped surfaces 9 of the same set of limiting protrusions 7 contact the two sides of the ball ring to support the ball ring and ensure the stability of the limiting. The shape of the arc-shaped surface 9 is adapted to the shape of the ball ring.

[0031] The anti-detachment connection structure of the present invention uses two limiting protrusions 7 in the same group to limit the ball ring, which prevents the ball ring from coming out of the raceway groove 2 of the housing during the operation of the car. Compared with the structure using a retaining ring, it not only simplifies the installation structure, but also effectively improves the anti-detachment performance of the ball ring group 3 and the housing.

[0032] In this embodiment, multiple grooves 10 are formed on the arc-shaped surface 9 of the protruding body 8. The grooves 10 are horizontally arranged and extend towards the inner side of the protruding body 8. The multiple grooves 10 are arranged at intervals along the axial direction of the inner section housing 1. A slider 11 is slidably disposed in the groove 10. An elastic connecting device 12 is installed between the slider 11 and the protruding body 8 to provide elastic support for the slider 11. The protruding body 8 is made of rubber material, and an inner cavity 13 is formed on the inner side of the protruding body 8. The inner cavity 13 is filled with damping fluid. When the ball ring contacts the slider 11, it compresses the elastic connecting device 12 and squeezes the protruding body 8. After the damping fluid in the protruding body 8 is squeezed, it can play a damping and buffering role on the slider 11, thereby reducing the impact of the ball ring on the protruding body 8 and preventing it from undergoing permanent deformation.

[0033] In this embodiment, the damping fluid inside the protruding body 8 is a magnetorheological fluid. The inner cavity 13 is connected to an annular tube 14 via a branch pipe. The annular tube 14 is installed within an annular groove 15 formed on the baffle 6. An electromagnetic coil 16 is wound around the outer side of the annular tube 14. The electromagnetic coil 16 is connected to a power supply and a controller, which are installed inside the baffle 6. The power supply provides a stable current to excite the coil to generate a magnetic field. By adjusting the duty cycle, the current magnitude is dynamically controlled, thereby adjusting the magnetic field strength. By adjusting the magnetic field strength through current, the rheological properties of the magnetorheological fluid are changed, thus allowing for control of the damping of the magnetorheological fluid as needed.

[0034] In this embodiment, the surface of the slider 11 is adapted to the surface of the ball ring. The surface of the slider 11 protrudes from the arc surface 9. The slider 11 protrudes from the arc surface 9 to a greater extent closer to the baffle 6. By realizing multi-level control, the damping capacity of the limiting protrusion 7 can be increased.

[0035] In this embodiment, a through hole 17 is provided on the baffle 6, and an elastic tube 18 is installed in the through hole 17. Elastic damping plates 19 are evenly spaced along the axial direction on the inner side of the elastic tube 18. The elastic damping plates 19 have damping holes. The elastic tubes are made of rubber and can be deformed by compression. The elastic tubes 18 are filled with damping fluid. The elastic tubes 18 and the baffle 6 are fixed by locking members 20. The inner end of the elastic tube 18 extends along the axial direction of the inner section housing 1. The elastic tubes 18 are installed between the inner section housing 1 and the ball ring, with two elastic tubes 18 corresponding to one ball ring. When the ball ring moves along the axial direction, the ball ring can squeeze the elastic tube 18, thereby driving the damping fluid in the elastic tube 18 to flow and displace within the elastic tube 18. The damping fluid flows through the damping holes, and through the viscosity of the liquid, a further damping and buffering effect is achieved.

[0036] In this embodiment, a liquid storage tank 21 is rotatably fitted to the outer side of the drive shaft. The inner side of the liquid storage tank 21 is filled with damping fluid. An elastic tube 18 is connected to the liquid storage tank 21 through a corrugated connecting tube 22. A support spring 23 is installed between the elastic tube 18 and the liquid storage tank 21. The support spring 23 provides elastic support force to the corrugated connecting tube 22, allowing the liquid storage tank 21 to have a pre-thrust towards the drive shaft side, increasing the stability of the structure during operation. The corrugated connecting tube 22 extends radially along the inner section housing 1. A ball groove 24 is formed on the inner side of the liquid storage tank 21, and a ball 25 is rotatably disposed in the ball groove 24. The ball 25 contacts the outer surface of the drive shaft, which can reduce the wear between the drive shaft and the ball 25.

[0037] In this embodiment, an elastic hoop structure is provided on the outer side of the protruding body 8. The elastic hoop structure is made of elastic material and includes an annular ring 26. An arc-shaped groove 27 is formed on the annular ring 26 to allow space for the inner section housing 1. Multiple friction plates 28 are stacked on the annular ring 26, and the length of the friction plates 28 gradually decreases radially outward. When the protruding body 8 is deformed by the ball ring, the protruding body 8 can drive the elastic hoop structure to expand and deform outward. After deformation, the friction plates 28 contact the inner wall of the inner section housing 1, generating a large frictional force, which can prevent the connecting ring 4 from coming out of the opening of the inner section housing 1. In order to facilitate the positioning of the annular ring 26, a slot for positioning is provided on the back side of the protruding body 8.

[0038] In this embodiment, the friction plate 28 is made of elastic material. The friction plate 28 is detachably connected to the annular ring 26 by screws, which facilitates the maintenance and replacement of the friction plate 28. The surface of the friction plate 28 has a groove for hiding the bolt 29. The figure shows only the connection between two friction plates 28 and the annular ring 26. There can also be multiple friction plates 28. The groove is mainly used to prevent the bolt 29 from directly contacting the surface of the inner section housing 1, which can be understood by those skilled in the art.

[0039] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A non-detachment connection structure for the inner section of a constant velocity half-shaft housing, comprising an inner section housing and a ball ring assembly that slides with a raceway groove formed inside the inner section housing, characterized in that: It also includes a connecting ring installed at the opening of the inner section housing. The inner wall shape of the connecting ring is adapted to the outer shape of the inner section housing. Multiple limiting protrusions are spaced axially along the inner wall of the connecting ring. A baffle is integrally formed on the end face of the connecting ring. Multiple sets of limiting protrusions are formed on the inner end face of the baffle. Two opposing limiting protrusions form a group, and each group of limiting protrusions corresponds to one ball ring in the ball ring assembly. Each limiting protrusion includes a protrusion body extending axially toward the inner section housing. An arc-shaped surface is formed on the protrusion body. Two arc-shaped surfaces of the same group of limiting protrusions contact the two sides of the ball ring respectively to support the ball ring. The shape of the arc-shaped surface is adapted to the outer shape of the ball ring. The arc-shaped surface of the protrusion body... Multiple grooves are formed on the upper part, and the grooves are arranged at intervals along the axial direction of the inner section shell. A slider is slidably installed in the groove, and an elastic connection device is installed between the slider and the protruding body. The protruding body is made of rubber material, and an inner cavity is formed on the inner side of the protruding body. The inner cavity is filled with damping fluid. The damping fluid in the protruding body is magnetorheological fluid. The inner cavity is connected to an annular tube through a branch pipe. The annular tube is installed in an annular groove opened on the baffle. An electromagnetic coil is wound on the outer side of the annular tube. The electromagnetic coil is connected to a power supply and a controller. The surface of the slider is adapted to the surface of the ball ring. The surface of the slider protrudes from the arc surface. The slider closer to the baffle protrudes from the arc surface to a greater extent.

2. The anti-detachment connection structure of the inner section of the constant velocity half-shaft housing according to claim 1, characterized in that: The baffle has a through hole, and an elastic tube is installed in the through hole. Elastic damping plates are installed evenly spaced along the axial direction on the inner side of the elastic tube. The elastic damping plates have damping holes. The elastic tube is filled with damping fluid. The elastic tube is fixed to the baffle by a locking device. The inner end of the elastic tube extends along the axial direction of the inner section housing. The elastic tube is installed between the inner section housing and the ball ring, with two elastic tubes corresponding to one ball ring.

3. The anti-detachment connection structure of the inner section of the constant velocity half-shaft housing according to claim 2, characterized in that: A liquid reservoir is rotatably fitted on the outer side of the drive shaft. The inner side of the liquid reservoir is filled with damping fluid. An elastic tube is connected to the liquid reservoir through a corrugated connecting pipe. A support spring is installed between the elastic tube and the liquid reservoir. The corrugated connecting pipe extends radially along the inner section of the housing. A ball groove is opened on the inner side of the liquid reservoir. A ball is rotatably installed in the ball groove and contacts the outer surface of the drive shaft.

4. The anti-detachment connection structure of the inner section of the constant velocity half-shaft housing according to any one of claims 1-3, characterized in that: An elastic hoop structure is provided on the outer side of the protruding body. The elastic hoop structure is made of elastic material and includes a ring ring. An arc-shaped groove is formed on the ring ring to make way for the inner section shell. Multiple friction plates are stacked on the ring ring, and the length of the friction plates gradually shortens radially outward.

5. The anti-detachment connection structure of the inner section of the constant velocity half-shaft housing according to claim 4, characterized in that: The friction plate is made of elastic material and is detachably connected to the ring by screws. The surface of the friction plate has grooves to hide the bolts.

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