Constant velocity universal joint type transmission shaft assembly for off-road vehicle

Abstract

The utility model discloses a constant velocity universal joint type transmission shaft assembly for an off-road vehicle, and belongs to the field of automobile parts. The right side of the first shaft head is fixedly provided with a spline end, the spline end is matched and connected with the spline sleeve, the first shaft head is fixedly connected with a sealing sleeve, the inner wall of the other end of the sealing sleeve is fixedly connected with a sealing ring, the inner wall of the sealing ring is matched with the spline sleeve, and the other end of the spline sleeve is fixedly connected with a shaft tube; the other end of the shaft tube is fixedly connected with a second shaft head, the second shaft head is fixedly connected with a constant velocity universal joint in the circumferential direction, and the left side of the first shaft head is fixedly connected with the other constant velocity universal joint in the circumferential direction. According to the utility model, the spherical convex shell is arranged, so that the rolling ball has more displacement space, the rolling ball can fully slide in the mounting groove, the connecting sleeve flaring structure is matched, the allowable working angle of the constant velocity universal joint is increased, and the transmission shaft assembly is allowed to carry out transmission operation at a large angle. The power transmission device is mainly used for transmitting power of off-road vehicles.

Description

Technical Field

[0001] The utility model belongs to the field of automobile parts, and in particular relates to a constant velocity universal joint type transmission shaft assembly for off-road vehicles. Background Art

[0002] In off-road vehicle design, the drive shaft is an important component for transmitting power in the transmission system. Its function is to transmit the power of the engine to the wheels through the transmission and drive axle, so that the car can generate driving force. In front-engine four-wheel drive off-road vehicles, in order to better pursue the off-road performance of the chassis and the passability of the whole vehicle, the ground clearance of the chassis must be increased, and the working angle of the drive shaft must be increased. However, the allowable working angle of the conventional cross-axis universal joint drive shaft cannot meet the requirements of large transmission angles. Usually, a constant velocity universal joint drive shaft is used, and the allowable working angle of the constant velocity universal joint is increased as much as possible to compensate for the increase in the drive shaft angle caused by the extreme beating of the suspension under off-road conditions, reduce the failure of the drive shaft assembly, and improve the reliability of the drive shaft assembly. Therefore, it is very beneficial to develop a constant velocity universal joint drive shaft assembly with a large allowable working angle. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and to provide a constant velocity joint type transmission shaft assembly for an off-road vehicle, which ensures that the ball has more displacement space by setting a spherical convex shell, so that the ball can fully slide in the installation groove, cooperates with the expansion structure of the connecting sleeve to increase the allowable working angle of the constant velocity joint, and allows the transmission shaft assembly to perform transmission operations at a large angle.

[0004] The described constant velocity universal joint drive shaft assembly for an off-road vehicle comprises a spline sleeve and a shaft head one, a spline end is fixedly provided on the right side of the shaft head one, the spline end is matched and connected with the spline sleeve, the spline end and the spline sleeve slide relative to each other, a sealing sleeve is fixedly connected to the shaft head one, a sealing ring is fixedly connected to the inner wall of the other end of the sealing sleeve, the inner wall of the sealing ring matches with the spline sleeve, the other end of the spline sleeve is fixedly connected to the shaft tube, the other end of the shaft tube is fixedly connected to the shaft head two, the shaft head two is circumferentially fixedly connected to the constant velocity universal joint, and the left side of the shaft head one is circumferentially fixedly connected to another group of constant velocity universal joints.

[0005] Preferably, the constant velocity universal joint comprises a bell housing, a star sleeve, a ball and a retaining frame, shaft head 1 and shaft head 2 are both circumferentially fixedly connected to the star sleeve, a slot 1 and a slot 2 are fixedly provided on the outer wall of the bell housing, a plurality of groups of mounting holes 2 are fixedly provided on the bell housing, a mounting groove is fixedly provided in the middle of the bell housing, the mounting groove, the retaining frame and the star sleeve are all matched with the ball, the retaining frame is located between the star sleeve and the mounting groove, an end cover is fixedly provided on one side of the bell housing, a plurality of groups of mounting holes 1 are fixedly provided on the end cover, a connecting sleeve is fixedly provided on the other side of the bell housing, a plurality of groups of mounting holes 3 are fixedly provided on the connecting sleeve, mounting hole 3 and mounting hole 1 are matched with mounting hole 2, a dust cover is fixedly provided on the other side of the connecting sleeve, a groove ring is fixedly provided on the dust cover, a clamp is fixedly connected to the groove ring, and shaft head 1 and shaft head 2 are both fixedly connected to the dust cover.

[0006] Preferably, the end cover has a folded edge extending inwardly, which is riveted to the first slot, the connecting sleeve has a folded edge extending inwardly, which is riveted to the second slot, a plurality of groups of spherical convex shells are fixed on the connecting sleeve, the spherical convex shells cooperate with the rolling ball, an arc-shaped clamping ring extends outwardly from the connecting sleeve, and the arc-shaped clamping ring is riveted to the dust cover.

[0007] Preferably, a retaining spring is fixedly sleeved on the star-shaped sleeve, and the first shaft head and the second shaft head are both matched with the retaining spring.

[0008] Preferably, a shock-absorbing paper is fixedly attached to the inner wall of the shaft tube, and a balancing sheet is fixedly connected to the outer wall of the shaft tube.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. By setting a spherical convex shell, the ball is guaranteed to have more displacement space, so that the ball can fully slide in the installation groove. With the expansion structure of the connecting sleeve, the allowable working angle of the constant velocity joint is increased, allowing the drive shaft assembly to perform transmission operations at a large angle to compensate for the increase in the transmission angle caused by the extreme beating of the suspension under off-road conditions, thereby reducing the failure of the drive shaft assembly at the end of the year.

[0011] 2. The arc-shaped clamp ring has a trumpet-mouth structure. While fixing the dust cover, it also avoids accidental interference between the connecting sleeve and the shaft head, which may cause damage to the dust cover and failure of the seal, allowing the universal joint to swing at a larger angle. By setting the arc-shaped clamp ring, the maximum swing angle of the universal joint is increased to 24°, making the off-road vehicle more widely used. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of some components of the utility model;

[0014] Figure 3 It is an exploded schematic diagram of some components of the utility model;

[0015] Figure 4 It is a schematic diagram of the exploded structure of the constant velocity universal joint;

[0016] Figure 5 It is a schematic diagram of some components of a constant velocity universal joint;

[0017] Figure 6 It is a half-section view of the connecting sleeve.

[0018] In the figure, 1, constant velocity universal joint; 101, end cover; 101A, folded edge one; 101B, mounting hole one; 102, bell shell; 102A, slot one; 102B, slot two; 102C, mounting hole two; 102D, mounting slot; 103, retaining frame; 104, star sleeve; 105, ball; 106, connecting sleeve; 106A, folded edge two; 106B, spherical convex shell; 106C, mounting hole three; 106D, arc-shaped clamping ring; 107, dust cover; 107A, groove ring; 108, clamp; 2, shaft head one; 201, spline end; 3, sealing sleeve; 4, spline sleeve; 5, shaft tube; 6, shaft head two; 7, sealing ring. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] The directional nouns involved in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application according to the visual orientation shown in the accompanying drawings. Unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", etc. should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, a constant velocity universal joint drive shaft assembly for an off-road vehicle comprises a spline sleeve 4 and a shaft head 2. A spline end 201 is fixedly arranged on the right side of the shaft head 2. The spline end 201 is matched and connected with the spline sleeve 4. The spline end 201 and the spline sleeve 4 slide relative to each other. The spline end 201 on the shaft head 2 and the inner spline of the spline sleeve 4 are kept circumferentially fixed, and the two cooperate to transmit power. A sealing sleeve 3 is fixedly connected to the shaft head 2. A sealing ring 7 is fixedly connected to the inner wall of the other end of the sealing sleeve 3. The sealing ring 7 is arranged to seal the inside of the sealing sleeve 3 to avoid contamination by impurities such as dust, which makes it difficult for the spline sleeve 4 and the spline end 201 to slide relative to each other, thereby reducing the service life of the drive shaft assembly.

[0022] The inner wall of the sealing ring 7 matches with the spline sleeve 4, and the other end of the spline sleeve 4 is fixedly connected with the shaft tube 5, and the other end of the shaft tube 5 is fixedly connected with the shaft head 2 6, and the shaft head 2 6 is circumferentially fixedly connected with the constant velocity universal joint 1, and the left side of the shaft head 1 2 is circumferentially fixedly connected with another set of constant velocity universal joints 1. Shock-absorbing paper is fixedly attached to the inner wall of the shaft tube 5, and a balance sheet is fixedly connected to the outer wall of the shaft tube 5. The shock-absorbing paper pasted on the inner wall of the shaft tube 5 can reduce noise, and the balance sheet on the outer wall of the shaft tube 5 can reduce the vibration of the transmission shaft assembly when the shaft tube 5 rotates at high speed, reduce the noise of the transmission shaft assembly, and improve the driving smoothness of the off-road vehicle.

[0023] like Figure 4 As shown, the constant velocity universal joint 1 includes a bell housing 102, a star sleeve 104, a ball 105 and a retainer 103, the shaft head 1 2 and the shaft head 2 6 are circumferentially fixedly connected to the star sleeve 104, a slot 1 102A and a slot 2 102B are fixedly provided on the outer wall of the bell housing 102, a plurality of sets of mounting holes 2 102C are fixedly provided on the bell housing 102, a mounting slot 102D is fixedly provided in the middle of the bell housing 102, the mounting slot 102D, the retainer 103 and the star sleeve 104 are all matched with the ball 105, and the retainer 103 is located at the star sleeve 104. Between the bell housing 102 and the mounting groove 102D, an end cover 101 is fixedly provided on one side of the bell housing 102, and a plurality of mounting holes 1 101B are fixedly provided on the end cover 101. A connecting sleeve 106 is fixedly provided on the other side of the bell housing 102, and a plurality of mounting holes 3 106C are fixedly provided on the connecting sleeve 106. The mounting holes 3 106C and the mounting holes 1 101B are matched with the mounting holes 2 102C. By passing the bolts through the mounting holes 3 106C, the mounting holes 1 101B and the mounting holes 2 102C, the constant velocity universal joint 1 is connected to the vehicle drive device of the vehicle body. A dust cover 107 is fixedly provided on the other side of the connecting sleeve 106, and a groove ring 107A is fixedly provided on the dust cover 107, and a clamp 108 is fixedly connected to the groove ring 107A. The shaft head 1 2 and the shaft head 2 6 are fixedly connected to the dust cover 107. By providing the dust cover 107, it is possible to prevent the grease inside the constant velocity universal joint 1 from overflowing, thereby preventing the transmission shaft assembly from failing.

[0024] like Figure 5 and Figure 6As shown, the end cover 101 has an inwardly extending folded edge 101A, which is riveted to the first slot 102A, and the connecting sleeve 106 has an inwardly extending folded edge 106A, which is riveted to the second slot 102B. By providing the folded edge 101A and the folded edge 106A, the contact area between the end cover 101 and the connecting sleeve 106 and the bell housing 102 is increased, thereby ensuring the connection strength. A plurality of groups of spherical convex shells 106B are fixedly provided on the connecting sleeve 106, and the spherical convex shells 106B cooperate with the ball 105. By setting the spherical convex shells 106B, it is ensured that the ball 105 has more displacement space, so that the ball 105 can fully slide in the installation groove 102D, increase the allowable working angle of the constant velocity universal joint 1, and allow the transmission shaft assembly to perform transmission operations at a large angle to compensate for the increase in the transmission angle caused by the extreme bounce of the suspension under off-road conditions, thereby reducing the failure of the transmission shaft assembly at the end of the year.

[0025] The connecting sleeve 106 has an arc-shaped collar 106D extending outward, and the arc-shaped collar 106D is fixed to the dust cover 107 by riveting. The arc-shaped collar 106D has a bell-shaped structure, which can fix the dust cover 107 while avoiding accidental interference between the connecting sleeve 106 and the shaft head 2, which may cause the dust cover 107 to be damaged and the seal to fail, and allows the universal joint to swing at a larger angle. By providing the arc-shaped collar 106D, the maximum swing angle of the universal joint is increased to 24°, so that the off-road vehicle can be used in a wider range of working conditions.

[0026] A retaining spring is fixedly sleeved on the star sleeve 104, and the shaft head 1 2 and the shaft head 2 6 are matched with the retaining spring. By setting the retaining spring, the axial limit of the star sleeve 104 and the shaft head 1 2 and the shaft head 2 6 is realized to ensure the stability of the connection.

[0027] The utility model provides a spherical convex shell 106B to ensure that the ball 105 has more displacement space, so that the ball 105 can fully slide in the installation groove 102D, increase the allowable working angle of the constant velocity universal joint 1, and allow the transmission shaft assembly to perform transmission operations at a large angle to compensate for the increase in the transmission angle caused by the extreme jump of the suspension under off-road conditions, thereby reducing the failure of the transmission shaft assembly at the end of the year. The arc-shaped clamping ring 106D is a trumpet-shaped structure, which not only meets the requirements of fixing the dust cover 107, but also avoids the accidental interference between the connecting sleeve 106 and the shaft head 2, resulting in the dust cover 107 being damaged and the sealing failing, allowing the universal joint to swing at a larger angle. By providing the arc-shaped clamping ring 106D, the maximum swing angle of the universal joint is increased to 24°, making the use of off-road vehicles more extensive.

Claims

1. A constant velocity universal joint drive shaft assembly for an off-road vehicle, characterized in that: The invention comprises a spline sleeve (4) and a shaft head one (2), wherein a spline end (201) is fixedly provided on the right side of the shaft head one (2), the spline end (201) is matched and connected with the spline sleeve (4), the spline end (201) and the spline sleeve (4) slide relative to each other, a sealing sleeve (3) is fixedly connected to the shaft head one (2), a sealing ring (7) is fixedly connected to the inner wall of the other end of the sealing sleeve (3), the inner wall of the sealing ring (7) matches with the spline sleeve (4), the other end of the spline sleeve (4) is fixedly connected to a shaft tube (5), the other end of the shaft tube (5) is fixedly connected to a shaft head two (6), the shaft head two (6) is circumferentially fixedly connected to a constant velocity universal joint (1), and the left side of the shaft head one (2) is circumferentially fixedly connected to another set of constant velocity universal joints (1).

2. The constant velocity universal joint drive shaft assembly for an off-road vehicle according to claim 1, characterized in that: The constant velocity universal joint (1) comprises a bell-shaped housing (102), a star-shaped sleeve (104), a rolling ball (105) and a retaining frame (103); the first shaft head (2) and the second shaft head (6) are both circumferentially fixedly connected to the star-shaped sleeve (104); a first clamping groove (102A) and a second clamping groove (102B) are fixedly provided on the outer wall of the bell-shaped housing (102); a plurality of groups of second mounting holes (102C) are fixedly provided on the bell-shaped housing (102); a mounting groove (102D) is fixedly provided in the middle of the bell-shaped housing (102); the mounting groove (102D), the retaining frame (103) and the star-shaped sleeve (104) are all matched with the rolling ball (105); the retaining frame (103) is located between the star-shaped sleeve (104) and the mounting groove (102D). An end cover (101) is fixedly provided on one side of the bell-shaped housing (102), and a plurality of groups of mounting holes (101B) are fixedly provided on the end cover (101). A connecting sleeve (106) is fixedly provided on the other side of the bell-shaped housing (102), and a plurality of groups of mounting holes (106C) are fixedly provided on the connecting sleeve (106). The mounting holes (106C) and the mounting holes (101B) are matched with the mounting holes (102C). A dust cover (107) is fixedly provided on the other side of the connecting sleeve (106), and a groove ring (107A) is fixedly provided on the dust cover (107). A clamp (108) is fixedly connected to the groove ring (107A), and the shaft head (2) and the shaft head (6) are fixedly connected to the dust cover (107).

3. The constant velocity universal joint drive shaft assembly for an off-road vehicle according to claim 2, characterized in that: The end cover (101) has a folded edge (101A) extending inwardly, and the folded edge (101A) is connected to the first clamping groove (102A) by riveting. The connecting sleeve (106) has a folded edge (106A) extending inwardly, and the folded edge (106A) is connected to the second clamping groove (102B) by riveting. The connecting sleeve (106) has multiple groups of spherical convex shells (106B) fixedly provided, and the spherical convex shells (106B) cooperate with the rolling ball (105). The connecting sleeve (106) has an arc-shaped clamping ring (106D) extending outwardly, and the arc-shaped clamping ring (106D) is fixed to the dust cover (107) by riveting.

4. The constant velocity universal joint drive shaft assembly for an off-road vehicle according to claim 2, characterized in that: A retaining spring is fixedly sleeved on the star-shaped sleeve (104), and both the first shaft head (2) and the second shaft head (6) are matched with the retaining spring.

5. The constant velocity universal joint drive shaft assembly for an off-road vehicle according to claim 1, characterized in that: A shock-absorbing paper is fixedly attached to the inner wall of the shaft tube (5), and a balancing sheet is fixedly connected to the outer wall of the shaft tube (5).

Images