Constant velocity universal joint damping transmission shaft assembly

Abstract

The utility model belongs to the technical field of transmission shafts, and particularly relates to a constant velocity universal joint damping transmission shaft assembly which comprises a sleeve, annular fixing rings are fixedly arranged in an inner cavity of the cylindrical sleeve in a bilateral symmetry mode, and transverse first buffer springs are arranged on the sides, away from each other, of the two fixing rings. Buffering assemblies are hinged to the other sides of the two fixing rings at equal intervals in a surrounding mode with the ring centers of the fixing rings as the centers. According to the device, when the device is vibrated in the running process, the spline rod can properly drive the circular plate to extrude the first buffer spring, the first buffer spring is extruded to deform, and external force borne by the circular plate is properly counteracted; when the vibration force is large, the extrusion plate touches one side of a sliding ring and drives a plurality of buffer assemblies to move at the same time, so that a second buffer spring and a damping telescopic rod stretch out and draw back along with the sliding ring, the external force borne by the insertion rod is properly counteracted, the insertion rod is further buffered, and therefore the damping effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission shafts, in particular to a constant velocity universal joint damping transmission shaft assembly. Background Art

[0002] The constant velocity joint drive shaft is a special mechanical transmission device, whose core function is to ensure that the two shafts can still transmit power at the same angular velocity when there is an angle between the two shafts or when the relative position changes. This feature makes the constant velocity joint drive shaft widely used in a variety of complex and precisely controlled mechanical systems.

[0003] The transmission shaft is an important component that connects the engine and the drive shaft. It is responsible for transmitting the power of the engine to drive the vehicle forward. During driving, the transmission shaft will be subjected to various impacts and vibration loads due to the unevenness of the road and the vibration of the vehicle. These impacts and loads will not only reduce the transmission efficiency, but also may aggravate the wear of parts, affect driving comfort, and even cause serious problems such as transmission shaft breakage. Therefore, it is necessary to develop a constant velocity universal joint shock-absorbing transmission shaft assembly. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0006] A constant velocity universal joint damping transmission shaft assembly, comprising:

[0007] A sleeve, wherein an annular fixing ring is fixedly arranged in a left-right symmetrical manner in the inner cavity of the cylindrical sleeve, a transverse first buffer spring is arranged on one side of the two fixing rings which are far away from each other, a buffer assembly is hingedly arranged around the center of the two fixing rings at equal intervals on the other side, and the other ends of the multiple buffer assemblies are hingedly arranged on one side of the annular sliding ring, and the two sliding rings are located between the two fixing rings;

[0008] An insert rod, a transverse insert rod is slidably fitted on the inner sides of the two fixed rings and the sliding ring and penetrates through the insert rod, an extrusion plate is provided on the rod body of each insert rod, the extrusion plate is located between the fixed ring and the sliding ring on the same side, a limit plate is provided at one end of the two insert rods close to the center of the sleeve, the diameters of the extrusion plate and the limit plate are larger than the diameter of the insert rod, a circular plate is provided at one end of the two insert rods away from the center of the sleeve, a spline rod is provided on the other side of the circular plate, and the other end of the spline rod is connected to a universal joint.

[0009] As a preferred solution of a constant velocity universal joint shock-absorbing transmission shaft assembly described in the utility model, the buffer assembly includes a first assembly plate hingedly arranged on the side wall of a fixed ring through a first hinge block, and a second assembly plate hingedly arranged on the side wall of a sliding ring through a second hinge block, and a second buffer spring is arranged between the first assembly plate and the second assembly plate.

[0010] As a preferred solution of a constant velocity universal joint shock-absorbing drive shaft assembly described in the utility model, a damping telescopic rod is further arranged between the first assembly plate and the second assembly plate, which can extend and retract in the same direction as the second buffer spring. The outer diameter of the second buffer spring is smaller than the outer diameters of the first assembly plate and the second assembly plate, the inner diameter of the second buffer spring is larger than the outer diameter of the damping telescopic rod, and the gap of the damping telescopic rod is located on the inner side of the second buffer spring.

[0011] As a preferred solution of a constant velocity universal joint shock-absorbing transmission shaft assembly described in the utility model, wherein: on the side wall between the two fixed rings, transverse limiting guide sliding rods are fixedly arranged at equal intervals around the center of the sliding ring, and the rod body of each limiting guide sliding rod slides through the side wall of the sliding ring, and the rod body of the limiting guide sliding rod does not contact the limiting plate.

[0012] As a preferred solution of a constant velocity universal joint shock-absorbing transmission shaft assembly described in the utility model, wherein: transverse spline cylinders are fixedly arranged on the left and right sides of the sleeve, the outer diameter of the spline cylinder is smaller than the outer diameter of the sleeve, and the interior of the spline cylinder is provided with a spline hole for the spline rod to slide and fit.

[0013] As a preferred solution of a constant velocity universal joint shock-absorbing drive shaft assembly described in the utility model, the left and right side walls of the sleeve are opened with openings for connecting the sleeve and the inner cavity of the spline cylinder, the inner diameter of the opening is equal to the outer diameter of the circular plate, and the outer diameter of the circular plate is larger than the outer diameter of the spline rod.

[0014] As a preferred solution of the constant velocity universal joint damping transmission shaft assembly described in the utility model, the two limit plates are located between the two sliding rings, and the ends of the two limit plates are spaced apart.

[0015] As a preferred solution of a constant velocity universal joint damping transmission shaft assembly described in the utility model, wherein: the universal joint is a constant velocity universal joint, and a coupling is arranged on the other side of the universal joint.

[0016] Compared with the prior art, the beneficial effect of the utility model is that when the device is subjected to vibration force during operation, the spline rod can properly drive the circular plate to squeeze the first buffer spring, so that the first buffer spring is squeezed and deformed, and the external force exerted on the circular plate is properly offset. In addition, the insertion rod will also drive the extrusion plate to move. When the vibration force is large, the extrusion plate will touch one side of the sliding ring. At this time, the sliding ring slides along the rod body of the limiting guide slide rod, and at the same time drives multiple buffer components to move, so that the second buffer spring and the damping telescopic rod are extended and retracted accordingly, and the external force exerted on the insertion rod is properly offset, and the external force is further buffered, thereby achieving a shock absorbing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the internal components of the sleeve and spline cylinder cross section of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the buffer component of the utility model;

[0021] Figure 4 For this utility model Figure 2 A schematic diagram of the structure in a side view direction;

[0022] Figure 5 This is an exploded view of the sleeve and the plug rod of the utility model;

[0023] Figure 6 For this utility model Figure 2 Schematic diagram of the structure when the first buffer spring is deformed under force and the extrusion plate touches one side of the sliding ring.

[0024] In the figure: sleeve 100, fixing ring 110, first buffer spring 120, buffer assembly 130, first hinge block 131, first assembly plate 132, second hinge block 133, second assembly plate 134, damping telescopic rod 135, second buffer spring 136, sliding ring 140, limiting guide slide rod 150, opening 160, spline cylinder 170, spline hole 180, insertion rod 200, circular plate 210, extrusion plate 220, limiting plate 230, spline rod 240, universal joint 250, coupling 260. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0027] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0028] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] See also Figure 1-Figure 6 , which shows a structural schematic diagram of a constant velocity universal joint damping transmission shaft assembly implementation method of the utility model, please refer to Figure 1-Figure 6 , a constant velocity universal joint shock absorbing drive shaft assembly is introduced in detail.

[0030] A constant velocity universal joint damping transmission shaft assembly, comprising a sleeve 100, wherein an annular fixing ring 110 is fixedly disposed symmetrically in the inner cavity of the cylindrical sleeve 100, and a transverse first buffer spring 120 is disposed on one side of two fixing rings 110 that are separated from each other, and a buffer assembly 130 is hingedly disposed around the center of the two fixing rings 110 at equal intervals on the other side thereof, and the other ends of the plurality of buffer assemblies 130 are hingedly disposed on one side of an annular sliding ring 140, and the two sliding rings 140 are located between the two fixing rings 110;

[0031] A transverse insertion rod 200 is provided through the inner side of the two fixed rings 110 and the sliding ring 140, and an extrusion plate 220 is provided on the rod body of each of the insertion rods 200. The extrusion plate 220 is located between the fixed ring 110 and the sliding ring 140 on the same side. A limiting plate 230 is provided at one end of the two insertion rods 200 close to the center of the sleeve 100. The diameters of the extrusion plate 220 and the limiting plate 230 are larger than the diameter of the insertion rod 200. A circular plate 210 is provided at one end of the two insertion rods 200 away from the center of the sleeve 100, and a spline rod 240 is provided on the other side of the circular plate 210. The other end of the spline rod 240 is connected to a universal joint 250.

[0032] Furthermore, the buffer assembly 130 includes a first assembly plate 132 hingedly arranged on the side wall of the fixed ring 110 through a first hinge block 131, and a second assembly plate 134 hingedly arranged on the side wall of the sliding ring 140 through a second hinge block 133, and a second buffer spring 136 is arranged between the first assembly plate 132 and the second assembly plate 134; a damping telescopic rod 135 is further arranged between the first assembly plate 132 and the second assembly plate 134 to extend in the same direction as the second buffer spring 136, and the outer diameter of the second buffer spring 136 is smaller than that of the first assembly plate 132. The outer diameter of the plate 132 and the second assembly plate 134, the inner diameter of the second buffer spring 136 is larger than the outer diameter of the damping telescopic rod 135, and the gap of the damping telescopic rod 135 is located on the inner side of the second buffer spring 136. When the insertion rod 200 is displaced by external force, the extrusion plate 220 is driven to move. When the extrusion plate 220 touches one side of the sliding ring 140, it will drive multiple buffer components 130 to move at the same time, so that the second buffer spring 136 and the damping telescopic rod 135 will expand and contract accordingly, appropriately offsetting the external force on the insertion rod 200, and further buffering it.

[0033] Furthermore, on the side wall between the two fixed rings 110, transverse limiting guide slide bars 150 are fixedly arranged at equal intervals around the center of the sliding ring 140. The rod body of each limiting guide slide bar 150 slides through the side wall of the sliding ring 140. The rod body of the limiting guide slide bar 150 does not contact the limiting plate 230. When the sliding ring 140 is touched and squeezed by the squeezing plate 220, the sliding ring 140 slides along the rod body of the limiting guide slide bar 150, thereby driving the movement of multiple buffer components 130. By setting the limiting guide slide bar 150, the movement direction of the sliding ring 140 is more stable.

[0034] Furthermore, transverse spline cylinders 170 are fixedly provided on the left and right sides of the sleeve 100, and the outer diameter of the spline cylinder 170 is smaller than the outer diameter of the sleeve 100. The interior of the spline cylinder 170 is provided with spline holes 180 for the spline rod 240 to slide and fit. The spline cylinder 170 can allow the spline rod 240 to be displaced transversely, and when the spline rod 240 rotates, the sleeve 100 will also rotate accordingly.

[0035] Furthermore, the left and right side walls of the sleeve 100 are provided with openings 160 for connecting the sleeve 100 and the inner cavity of the spline cylinder 170. The inner diameter of the opening 160 is equal to the outer diameter of the circular plate 210. The outer diameter of the circular plate 210 is larger than the outer diameter of the spline rod 240, so that the circular plate 210 can only move in the inner cavity of the sleeve 100 at all times, and the first buffer spring 120 is located between the fixing ring 110 and the circular plate 210, ensuring that the first buffer spring 120 is also always located in the inner cavity of the sleeve 100.

[0036] Furthermore, the two limit plates 230 are located between the two sliding rings 140 , and the ends of the two limit plates 230 are spaced apart, and there is a space between the two limit plates 230 to prevent the ends from touching when the two move.

[0037] Furthermore, the universal joint 250 is a constant velocity universal joint, and a coupling 260 is provided on the other side of the universal joint 250 , which is convenient for connection with other components through the coupling 260 .

[0038] During specific use, when the device is subjected to vibration force during operation, the spline rod 240 can properly drive the circular plate 210 to squeeze the first buffer spring 120, so that the first buffer spring 120 is squeezed and deformed, and the external force exerted on the circular plate 210 is properly offset. In addition, the insertion rod 200 will also drive the extrusion plate 220 to move. When the vibration force is large, the extrusion plate 220 will touch one side of the sliding ring 140. At this time, the sliding ring 140 slides along the rod body of the limiting guide slide rod 150, and at the same time drives multiple buffer components 130 to move, so that the second buffer spring 136 and the damping telescopic rod 135 are extended and retracted accordingly, and the external force exerted on the insertion rod 200 is properly offset, and it is further buffered, thereby achieving a shock absorbing effect.

[0039] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A constant velocity universal joint damping transmission shaft assembly, characterized in that: include: A sleeve (100), wherein an annular fixing ring (110) is fixedly disposed symmetrically on the inner cavity of the cylindrical sleeve (100), a transverse first buffer spring (120) is disposed on one side of the two fixing rings (110) that are separated from each other, and a buffer assembly (130) is hingedly disposed around the center of the two fixing rings (110) at equal intervals on the other side thereof, and the other ends of the plurality of buffer assemblies (130) are hingedly disposed on one side of an annular sliding ring (140), and the two sliding rings (140) are located between the two fixing rings (110); The insert rod (200) is provided with a transverse insert rod (200) which is slidably fitted inside the two fixing rings (110) and the sliding ring (140), and the rod body of each insert rod (200) is provided with an extrusion plate (220), and the extrusion plate (220) is located between the fixing ring (110) and the sliding ring (140) on the same side. A limit plate (230) is provided at one end of the two insert rods (200) close to the center of the sleeve (100), and the diameters of the extrusion plate (220) and the limit plate (230) are larger than the diameter of the insert rod (200). A circular plate (210) is provided at one end of the two insert rods (200) away from the center of the sleeve (100), and a spline rod (240) is provided on the other side of the circular plate (210), and the other end of the spline rod (240) is connected to a universal joint (250).

2. The constant velocity universal joint damping transmission shaft assembly according to claim 1, characterized in that: The buffer assembly (130) comprises a first assembly plate (132) hingedly arranged on the side wall of the fixed ring (110) via a first hinge block (131), and a second assembly plate (134) hingedly arranged on the side wall of the sliding ring (140) via a second hinge block (133), wherein a second buffer spring (136) is arranged between the first assembly plate (132) and the second assembly plate (134).

3. The constant velocity universal joint damping transmission shaft assembly according to claim 2, characterized in that: A damping telescopic rod (135) is also provided between the first assembly plate (132) and the second assembly plate (134) and is telescopically extendable in the same direction as the second buffer spring (136); the outer diameter of the second buffer spring (136) is smaller than the outer diameters of the first assembly plate (132) and the second assembly plate (134); the inner diameter of the second buffer spring (136) is larger than the outer diameter of the damping telescopic rod (135); and the gap of the damping telescopic rod (135) is located on the inner side of the second buffer spring (136).

4. The constant velocity universal joint damping transmission shaft assembly according to claim 1, characterized in that: On the side wall between the two fixed rings (110), transverse limiting guide sliding rods (150) are fixedly arranged at equal intervals around the center of the sliding ring (140), and the rod body of each limiting guide sliding rod (150) slides through the side wall of the sliding ring (140), and the rod body of the limiting guide sliding rod (150) does not contact the limiting plate (230).

5. The constant velocity universal joint damping transmission shaft assembly according to claim 1, characterized in that: A transverse spline cylinder (170) is fixedly provided on the left and right sides of the sleeve (100); the outer diameter of the spline cylinder (170) is smaller than the outer diameter of the sleeve (100); and a spline hole (180) for the spline rod (240) to slide and fit is provided inside the spline cylinder (170).

6. The constant velocity universal joint damping transmission shaft assembly according to claim 5, characterized in that: The left and right side walls of the sleeve (100) are provided with openings (160) for communicating the sleeve (100) with the inner cavity of the spline cylinder (170); the inner diameter of the opening (160) is equal to the outer diameter of the circular plate (210); and the outer diameter of the circular plate (210) is greater than the outer diameter of the spline rod (240).

7. The constant velocity universal joint damping transmission shaft assembly according to claim 1, characterized in that: The two limit plates (230) are located between the two sliding rings (140), and the ends of the two limit plates (230) are arranged at intervals.

8. The constant velocity universal joint damping transmission shaft assembly according to claim 1, characterized in that: The universal joint (250) is a constant velocity universal joint, and a coupling (260) is provided on the other side of the universal joint (250).

Images