Constant-speed driving shaft ball cage

Abstract

The utility model relates to the technical field of constant-speed driving shafts, in particular to a constant-speed driving shaft ball cage, in the using process, when the angle of a shaft core deflects, six balls in the ball cage correspondingly roll along guide rails arranged on a shaft shell and the shaft core, and when the shaft core rotates, the balls are driven to rotate at the same time. In the transmission process, due to the fact that the positions of the six balls inside are not changed properly, the six balls continuously extrude the limiting plate, the limiting plate continuously resets under the action of the elastic force of the spring, the limiting plate is made to be tightly attached to the shaft sleeve all the time, and the situation that the balls inside are disengaged from an original rail is avoided. The limiting cover is in threaded connection with the side end of the shaft shell, the balls are limited, the effect of preventing the internal balls from being separated from an original rail to affect use is achieved, the device is disassembled and assembled by unscrewing the limiting cover, and the effects that disassembly and assembly are convenient, maintenance is facilitated, and the service life is prolonged are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of constant velocity drive shafts, in particular to a constant velocity drive shaft ball cage. Background Art

[0002] A constant velocity drive shaft is a mechanism that connects two shafts whose axes do not overlap and transmits motion at the same angular velocity. It is an important component in the vehicle transmission system. Its function is to transmit the power of the engine from the transmission to the drive wheels of the vehicle, meet the requirements of the outer end angle of the vehicle drive shaft, and thus smoothly and reliably transmit the power of the engine to the wheels. At present, there is an existing constant velocity drive shaft ball cage (such as patent number: CN202338576U), which discloses a constant velocity drive shaft ball cage, including: an inner star wheel, which is connected to the first shaft, and the outer surface of the inner star wheel is provided with a plurality of arc-shaped groove-shaped inner ballways, and the inner ballways are arranged around the axis of the first shaft at equal intervals; an outer star wheel, which is connected to the second shaft and sleeved on the outside of the inner star wheel, and the inner surface of the outer star wheel is a spherical surface, and the spherical surface is provided with arc-shaped grooves that are adapted to the number of inner ballways. The outer ballway is arranged around the axis of the second shaft at equal intervals, and the surface between the two adjacent outer ballways is provided with an oil guide groove, which extends along the axial direction of the second shaft, and the length of the oil guide groove is adapted to the working length of the inner and outer ballways; the steel ball is embedded in the integral ballway composed of the inner and outer ballways; the retaining frame is arranged between the inner and outer star wheels after the sleeve connection, and is used to maintain the embedded position of the steel ball. The outer surface of the retaining frame is a spherical surface, and the outer surface of the spherical ball of the retaining frame is rotationally adapted to the inner surface of the spherical ball of the outer star wheel. However, in the process of implementing the above technical solution, it is found that there are at least the following technical problems: when turning, if the angle of deflection of the two axes of the existing ball cage is too large, it may cause the internal steel ball to deviate from the track, causing the transmission process to jam. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a constant-speed drive shaft ball cage to solve the technical problem of the existing ball cage that if the angle of deflection of the two axes is too large when turning, the internal steel balls may fall off the track, causing jamming in the transmission process.

[0005] (II) Technical solution

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A constant-speed drive shaft ball cage comprises an axle shell, a limit cover is threadedly installed on the side end of the axle shell, the limit cover comprises a threaded cover, six springs are fixedly installed on the side end of the threaded cover, and a limit plate is fixedly installed on the side end of the spring; wherein, six sliding grooves are evenly opened on the inner side wall of the axle shell, an axle core is rotatably installed inside the axle shell, and six ball bearings are rotatably installed on the outer side wall of the axle core; wherein, six sliding grooves are evenly opened on the outer side wall of the axle core, a shaft sleeve is slidably installed on the outer side wall of the axle core, and a dust cover is fixedly installed on the side end of the threaded cover.

[0008] Preferably: a driven shaft is slidably mounted on the side end of the shaft housing; wherein the shaft housing and the driven shaft are fixed by hexagon socket bolts.

[0009] Preferably: a transmission shaft is slidably mounted on the side end of the shaft core; wherein the shaft core and the transmission shaft are fixed by means of hexagon socket bolts.

[0010] (III) Beneficial Effects 1. During use, when the shaft core angle is deflected, the six internal ball bearings roll accordingly along the guide rails provided on the shaft shell and the shaft core. When the shaft core rotates, the ball bearings will be driven to rotate at the same time, and the ball bearings will also push the shaft shell to rotate to complete the transmission. During the transmission process, the position of the six internal ball bearings is incorrect and changes, which will continuously squeeze the limit plate. The limit plate will continuously reset under the action of the spring force, so that the limit plate is always close to the shaft sleeve to prevent the internal ball bearings from leaving the original track. The limit cover is threadedly connected to the side end of the shaft shell to limit the ball bearings, thereby preventing the internal ball bearings from leaving the original track and affecting the use.

[0011] 2. The dust cover on the side end of the threaded cover can adapt to the change of the transmission shaft angle and prevent external dust from entering the shaft housing. At the same time, it can prevent the leakage of lubricating oil inside the shaft housing. By unscrewing the limit cover, the connection between the transmission shaft and the shaft core can be leaked. By unscrewing the fixed hexagon socket bolt, the transmission shaft and the driven shaft can be separated. The shaft housing and the shaft core can be removed for internal maintenance. By unscrewing the limit cover, the disassembly and assembly of the device is completed, which achieves the effect of easy disassembly and assembly, maintenance and extended service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0013] Figure 1 This is a structural diagram of the shaft housing of the utility model;

[0014] Figure 2 It is a cross-sectional structural diagram of the utility model;

[0015] Figure 3It is the exploded structure diagram of the utility model;

[0016] Figure 4 This is a cross-sectional structural diagram of the shaft housing of the utility model. Legend: 1, shaft housing; 2, limit cover; 21, threaded cover; 22, dust cover; 23, spring; 24, limit plate; 3, ball bearing; 4, shaft core; 5, shaft sleeve; 6, transmission shaft; 7, driven shaft. DETAILED DESCRIPTION

[0017] The embodiment of the present application provides a constant-speed drive shaft ball cage, which effectively solves the technical problem of the existing ball cage that if the angle of deflection of the two axes is too large when turning, the internal steel balls may fall off the track, causing the transmission process to jam. During use, when the shaft core angle is deflected, the six internal balls roll accordingly along the guide rails opened on the shaft shell and the shaft core. When the shaft core rotates, it will drive the balls to rotate at the same time, and the balls will also push the shaft shell to rotate to complete the transmission. During the transmission process, the six internal balls will change their positions due to incorrect positions, which will continuously squeeze the limit plate. The limit plate will continuously reset under the action of the spring force, so that the limit plate The limit cover is connected to the side end of the shaft shell through a thread, so as to limit the position of the ball and prevent the internal ball from being separated from the original track and affecting the use. The dust cover on the side end of the threaded cover can adapt to the change of the transmission shaft angle and prevent external dust from entering the shaft shell. At the same time, it can prevent the leakage of lubricating oil inside the shaft shell. By unscrewing the limit cover, the connection part between the transmission shaft and the shaft core can be leaked. By unscrewing the fixed hexagon socket bolt, the transmission shaft and the driven shaft can be separated. The shaft shell and the shaft core can be removed for internal maintenance. By unscrewing the limit cover, the device can be disassembled and assembled, which is convenient for disassembly and assembly, maintenance and extended service life.

[0018] Implementation example Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in the embodiment of the present application effectively solves the technical problem that when turning, if the angle of deflection of the two axes is too large, the internal steel balls may be derailed, causing the transmission process to become stuck, etc. The overall idea is as follows:

[0019] In view of the problems existing in the prior art, the utility model provides a constant speed drive shaft ball cage, including a shaft housing 1, a limit cover 2 is threadedly installed on the side end of the shaft housing 1, and the limit cover 2 includes a threaded cover 21, six springs 23 are fixedly installed on the side end of the threaded cover 21, and a limit plate 24 is fixedly installed on the side end of the spring 23; six sliding grooves are evenly opened on the inner side wall of the shaft housing 1. A shaft core 4 is rotatably installed inside the shaft housing 1, and six balls 3 are rotatably installed on the outer side wall of the shaft core 4; six sliding grooves are evenly opened on the outer side wall of the shaft core 4, and a shaft sleeve 5 is slidably installed on the outer side wall of the shaft core 4, and a dust cover 22 is fixedly installed on the side end of the threaded cover 21. A driven shaft 7 is slidably installed on the side end of the shaft housing 1; the shaft housing 1 and the driven shaft 7 are fixed by hexagon socket bolts, and a transmission shaft 6 is slidably installed on the side end of the shaft core 4; the shaft core 4 and the transmission shaft 6 are fixed by hexagon socket bolts.

[0020] Working principle:

[0021] The first step is that during use, when the angle of the shaft core 4 is deflected, the six internal balls 3 roll accordingly along the guide rails provided on the shaft shell 1 and the shaft core 4. When the shaft core 4 rotates, it will drive the balls 3 to rotate at the same time, and the balls 3 will also push the shaft shell 1 to rotate to complete the transmission. During the transmission process, since the positions of the six internal balls 3 are incorrect and change, the limit plate 24 will be continuously squeezed. The limit plate 24 will be continuously reset under the action of the elastic force of the spring 23, so that the limit plate 24 is always close to the shaft sleeve 5 to prevent the internal balls 3 from leaving the original track. The limit cover 2 is threadedly connected to the side end of the shaft shell 1 to limit the balls 3, thereby preventing the internal balls 3 from leaving the original track and affecting the use. In the second step, the dust cover 22 at the side end of the threaded cover 21 can adapt to the change of the angle of the transmission shaft 6 to prevent external dust from entering the inside of the shaft housing 1. At the same time, the leakage of the lubricating oil inside the shaft housing 1 can be prevented by unscrewing the limit cover 2 to leak out the connection between the transmission shaft 6 and the shaft core 4. The transmission shaft 6 and the driven shaft 7 can be disengaged by unscrewing the fixed hexagon socket bolts. The shaft housing 1 and the shaft core 4 can be removed for maintenance of the interior. The disassembly and assembly of the device can be completed by unscrewing the limit cover 2, etc., which achieves the effect of easy disassembly and assembly, maintenance and extended service life.

[0022] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A constant velocity drive shaft cage, comprising a shaft housing (1), characterized in that: A limit cover (2) is threadedly mounted on the side end of the shaft housing (1), the limit cover (2) comprises a threaded cover (21), six springs (23) are fixedly mounted on the side end of the threaded cover (21), and a limit plate (24) is fixedly mounted on the side end of the spring (23); The inner side wall of the shaft housing (1) is evenly provided with six sliding grooves.

2. A constant velocity drive shaft ball cage as claimed in claim 1, characterized in that: A shaft core (4) is rotatably mounted inside the shaft housing (1), and six balls (3) are rotatably mounted on the outer side wall of the shaft core (4); The outer wall of the shaft core (4) is evenly provided with six sliding grooves.

3. A constant velocity drive shaft cage as claimed in claim 2, characterized in that: A shaft sleeve (5) is slidably mounted on the outer side wall of the shaft core (4).

4. A constant velocity drive shaft cage as claimed in claim 1, characterized in that: A dust cover (22) is fixedly mounted on the side end of the threaded cover (21).

5. A constant velocity drive shaft cage as claimed in claim 1, characterized in that: A driven shaft (7) is slidably mounted on the side end of the shaft housing (1); The shaft housing (1) and the driven shaft (7) are fixed by means of hexagon socket bolts.

6. A constant velocity drive shaft cage as claimed in claim 2, characterized in that: A transmission shaft (6) is slidably mounted on the side end of the shaft core (4); The shaft core (4) and the transmission shaft (6) are fixed by means of hexagon socket bolts.

Images