Sliding shaft of automobile transmission shaft

Abstract

The utility model discloses a sliding shaft of an automobile transmission shaft, which relates to the technical field of automobile transmission shafts and comprises a transmission shaft tube and a telescopic sleeve, the transmission shaft tube is connected with the telescopic sleeve through a connecting piece, the connecting piece comprises a telescopic cover, and two ends of the telescopic cover are respectively connected with a first connecting ring and a second connecting ring. A first connecting ring on the telescopic cover is connected with a first flange plate through a bolt, a second connecting ring on the telescopic cover is connected with a second flange plate through a bolt, the first flange plate and the second flange plate are fixedly installed on a transmission shaft pipe and a telescopic sleeve respectively, and a telescopic shaft is arranged at the end, close to the telescopic cover, of the transmission shaft pipe. The telescopic cover is installed between the transmission shaft pipe and the telescopic sleeve, a relatively closed space is formed at the connecting portion of the transmission shaft pipe and the telescopic sleeve, the telescopic shaft and the telescopic groove in the telescopic cover are isolated from the external environment, and therefore the telescopic cover is installed on the transmission shaft pipe and the telescopic sleeve, and the telescopic shaft is installed in the telescopic groove. And the risk that parts are abraded due to impurities is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile transmission shaft, concretely is automobile transmission shaft slip axle. BACKGROUND

[0002] In the automobile transmission system, the transmission shaft slip axle plays a crucial role. With the rapid development of the automobile industry, people's requirements for automobile performance, comfort and reliability are constantly improving. In the process of driving, due to the complex and changeable road conditions, the suspension system of the vehicle will move constantly, resulting in dynamic changes in the distance between the output end of the transmission and the input end of the drive axle. The transmission shaft slip axle is designed to adapt to such changes, which can compensate for the change in the length of the transmission shaft while ensuring efficient power transmission, ensuring stable operation of the automobile under various working conditions.

[0003] The existing slip axle has deficiencies in sealing performance. When the automobile is driving, dust, mud and other impurities on the road can easily enter the inside of the slip axle, pollute the lubricating oil and accelerate the wear of the parts. Moreover, when the vehicle is driving in water, water may also enter the slip axle, causing the spline to rust and further exacerbating the wear, shortening the service life of the slip axle. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides an automobile transmission shaft slip axle, which solves the problem of dust, mud and other impurities on the road easily entering the inside of the slip axle, polluting the lubricating oil and accelerating the wear of the parts when the automobile is driving.

[0005] To achieve the above purpose, the utility model realizes the following technical scheme: an automobile transmission shaft slip axle, comprising a transmission shaft pipe and an expansion sleeve, the transmission shaft pipe and the expansion sleeve are connected by a connecting piece, the connecting piece comprises an expansion cover, the two ends of the expansion cover are respectively connected with connecting ring one and connecting ring two, the connecting ring one on the expansion cover is connected with flange plate one through bolts, the connecting ring two on the expansion cover is connected with flange plate two through bolts, the flange plate one and the flange plate two are respectively fixedly installed on the transmission shaft pipe and the expansion sleeve, one end of the transmission shaft pipe close to the expansion cover is provided with an expansion shaft, one end of the expansion sleeve close to the expansion cover is provided with an expansion groove, and the expansion shaft is installed in the expansion groove.

[0006] Preferably, the flange plate one is provided with a mounting ring one on the side close to the connecting ring one, the outer side of the connecting ring one is provided with a mounting groove one, the mounting groove one is correspondingly matched with the mounting ring one, and a sealing ring one is installed on the inner wall of the mounting groove one.

[0007] Preferably, the flange plate two is provided with a mounting ring two on one side close to the connecting ring two, the outer side of the connecting ring two is provided with a mounting groove two, the mounting groove two is correspondingly matched with the mounting ring two, and the inner wall of the mounting groove two is provided with a sealing ring two.

[0008] Preferably, the telescopic shaft is provided with rotating grooves in a ring array, the rotating grooves extend along the axial direction of the telescopic shaft, and rollers are rotatably arranged in the rotating grooves.

[0009] Preferably, the inner wall of the telescopic groove is provided with moving grooves in a ring array, the moving grooves extend along the axial direction of the telescopic groove, and the width of the moving grooves is matched with the length of the rollers.

[0010] The utility model provides a car transmission shaft slip shaft, has the following beneficial effects:

[0011] (1), the utility model discloses a telescopic cover is installed between transmission shaft pipe and telescopic cover, and the connecting part of transmission shaft pipe and telescopic cover forms a relatively closed space, and the inside telescopic shaft and telescopic groove are isolated from the outside environment, reduce the risk of part wear and tear due to impurities, realize sealing connection through mounting groove, mounting ring and sealing ring, avoid the problem that water enters the connecting part and causes the rust of part.

[0012] (2), the utility model discloses a roller, reduce the friction between telescopic shaft and telescopic groove when moving in the telescopic groove, avoid the excessive wear and tear of part.

[0013] Thus, the problem that dust, mud and other impurities on the road easily invade the inside of the slip shaft, pollute the lubricating oil, accelerate the wear and tear of parts and cause the rust of spline when the car drives is solved. DRAWINGS

[0014] Figure 1 It is the overall structure display of the utility model;

[0015] Figure 2 It is the overall structure display of the utility model; Figure 1 It is the structure display of one end of transmission shaft pipe in the utility model;

[0016] Figure 3 It is the structure display of one end of transmission shaft pipe in the utility model; Figure 1 It is the structure display of telescopic cover in the utility model;

[0017] Figure 4 It is the structure display of connecting piece in the utility model. Figure 1

[0018] ​In the figure, 1, transmission shaft pipe; 11, telescopic shaft; 111, rotating groove; 112, roller; 12, flange plate one; 13, mounting ring one; 2, telescopic sleeve; 21, flange plate two; 22, mounting ring two; 23, telescopic groove; 24, moving groove; 3, connecting piece; 31, telescopic cover; 32, connecting ring two; 321, mounting groove two; 322, sealing ring two; 33, connecting ring one; 331, mounting groove one; 332, sealing ring one. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Embodiment 1: please refer to Figures 1-4 , the automobile transmission shaft slip shaft, including transmission shaft pipe 1 and telescopic sleeve 2, transmission shaft pipe 1 and telescopic sleeve 2 are connected through connecting piece 3, connecting piece 3 includes telescopic cover 31, and the both ends of telescopic cover 31 are connected with connecting ring one 33 and connecting ring two 32 respectively, and connecting ring one 33 on telescopic cover 31 is connected with flange plate one 12 through bolt, and connecting ring two 32 on telescopic cover 31 is connected with flange plate two 21 through bolt, and flange plate one 12 and flange plate two 21 are fixedly installed on transmission shaft pipe 1 and telescopic sleeve 2 respectively, and the one end of transmission shaft pipe 1 close to telescopic cover 31 is provided with telescopic shaft 11, and the one end of telescopic sleeve 2 close to telescopic cover 31 is provided with telescopic groove 23, and telescopic shaft 11 is installed in telescopic groove 23;

[0021] The side close to connecting ring one 33 of flange plate one 12 is provided with mounting ring one 13, and the outside of connecting ring one 33 is provided with mounting groove one 331, and mounting groove one 331 is correspondingly matched with mounting ring one 13, and sealing ring one 332 is installed on the inner wall of mounting groove one 331;

[0022] The side close to connecting ring two 32 of flange plate two 21 is provided with mounting ring two 22, and the outside of connecting ring two 32 is provided with mounting groove two 321, and mounting groove two 321 is correspondingly matched with mounting ring two 22, and sealing ring two 322 is installed on the inner wall of mounting groove two 321.

[0023] Specifically, the telescopic cover 31 is installed between the transmission shaft tube 1 and the telescopic sleeve 2, and the two ends thereof are connected with the flange plate one 12 and the flange plate two 21 through the connecting ring one 33 and the connecting ring two 32 respectively. The telescopic cover 31 can wrap the connecting part of the transmission shaft tube 1 and the telescopic sleeve 2, and to some extent, it can block the dust, mud and other impurities in the outside from directly contacting the internal structure such as the telescopic shaft 11 and the telescopic groove 23, thereby playing a preliminary protection role.

[0024] The flange plate one 12 is provided with the mounting ring one 13 on the side close to the connecting ring one 33, and the outer side of the connecting ring one 33 is provided with the mounting groove one 331, which is correspondingly matched with the mounting ring one 13. When the connecting ring one 33 is connected with the flange plate one 12 through the bolt, the mounting ring one 13 will be embedded in the mounting groove one 331. This nesting structure further increases the difficulty of the water and impurities in the outside entering the inside, forms a tortuous channel, so that the water and impurities are difficult to directly enter. Similarly, the mounting ring two 22 on the flange plate two 21 is correspondingly matched with the mounting groove two 321 on the connecting ring two 32, and when the connecting ring two 32 is connected with the flange plate two 21, the mounting ring two 22 is embedded in the mounting groove two 321, which also plays a role in increasing the sealing path and blocking the water and impurities.

[0025] When the mounting ring one 13 is embedded in the mounting groove one 331, the sealing ring one 332 will be compressed to fill the small gap between the mounting ring one 13 and the mounting groove one 331, thereby preventing the water and impurities from entering from this gap. The sealing ring two 322 on the inner wall of the mounting groove two 321 also plays the same role. When the mounting ring two 22 is embedded in the mounting groove two 321, the sealing ring two 322 is compressed to seal the gap between the mounting ring two 22 and the mounting groove two 321, thereby preventing the water and impurities from entering.

[0026] Through the overall protection of the telescopic cover 31, the nesting structure of the mounting ring and the mounting groove, and the sealing effect of the sealing ring, a multi-level sealing system is formed, which greatly improves the sealing performance. It can effectively prevent the water, dust, mud and other impurities in the outside from entering the connecting part of the transmission shaft tube 1 and the telescopic sleeve 2, and protect the internal structure such as the telescopic shaft 11 and the telescopic groove 23 from being polluted and damaged.

[0027] In order to reduce the friction, please refer to Figures 1-4 On the basis of the embodiment 1, the rotating groove 111 is arranged in an annular array on the telescopic shaft 11, the rotating groove 111 extends along the axial direction of the telescopic shaft 11, and the roller 112 is rotatably installed in the rotating groove 111, and the roller 112 is in a cylindrical shape.

[0028] The moving groove 24 is arranged in an annular array on the inner wall of the telescopic groove 23, the moving groove 24 extends along the axial direction of the moving groove 24, and the width of the moving groove 24 is matched with the length of the roller 112.

[0029] Specifically, the cylindrical roller 112 is rotatably installed in the rotating groove 111 on the telescopic shaft 11, and when the telescopic shaft 11 performs telescopic movement in the telescopic groove 23, the roller 112 will roll in the rotating groove 111. At the same time, the roller 112 is in contact with the moving groove 24 on the inner wall of the telescopic groove 23 and rolls along the moving groove 24. Since the rolling friction coefficient is much smaller than the sliding friction coefficient, the sliding friction that may exist between the telescopic shaft 11 and the inner wall of the telescopic groove 23 is replaced by the rolling friction of the roller 112, thereby significantly reducing the friction during telescopic movement.

[0030] The rotating groove 111 extends along the axis direction of the telescopic shaft 11, the moving groove 24 extends along the axial direction of the telescopic groove 23, and the width of the moving groove 24 is matched with the length of the roller 112. This enables the roller 112 to maintain a stable movement track during rolling, reduces unnecessary shaking and jamming, further ensures the effectiveness of rolling friction, and reduces friction loss.

[0031] The smaller friction force can reduce the wear degree of the telescopic shaft 11, the telescopic groove 23, and the roller 112, and the reduction of wear means that these components can maintain good working condition for a longer period of time, reduces failures and damages caused by excessive wear, prolongs the service life of the automobile transmission shaft slip shaft, and reduces the cost of maintenance and replacement of components; the stability of rolling friction makes the telescopic shaft 11 more stable during telescopic movement, reduces vibration and noise, helps to improve the stability and comfort of automobile driving, and also reduces the influence of vibration and noise on other components, further improves the reliability and stability of the entire automobile transmission system.

[0032] Working principle: The connecting ring one 33 and the connecting ring two 32 at both ends of the telescopic cover 31 are respectively corresponding to the flange plate one 12 and the flange plate two 21. The mounting ring one 13 on the flange plate one 12 is embedded in the mounting groove one 331 of the connecting ring one 33, and the mounting ring two 22 on the flange plate two 21 is embedded in the mounting groove two 321 of the connecting ring two 32. The sealing ring one 332 on the inner wall of the mounting groove one 331 and the sealing ring two 322 on the inner wall of the mounting groove two 321 are compressed to achieve sealing. Then the connecting ring one 33 and the flange plate one 12 are fastened and connected by bolts, and the connecting ring two 32 and the flange plate two 21 are fastened and connected, so that the telescopic cover 31 is installed between the transmission shaft pipe 1 and the telescopic sleeve 2, forming protection and sealing for the connecting part;

[0033] When the automobile engine works, power is transmitted through the transmission shaft tube 1, and due to the movement of the suspension system during the driving process and other factors, the distance between the transmission shaft tube 1 and the telescopic sleeve 2 will change. At this time, the telescopic shaft 11 performs telescopic movement in the telescopic groove 23. During the telescopic movement, the roller 112 on the telescopic shaft 11 rolls in the rotating groove 111, and at the same time rolls along the moving groove 24 on the inner wall of the telescopic groove 23, so as to reduce the friction in the telescopic process in the form of rolling friction, and ensure that the power can be efficiently and stably transmitted from the transmission shaft tube 1 to the telescopic sleeve 2.

[0034] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0035] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A slip shaft for a drive shaft of a motor vehicle, comprising a drive shaft tube (1) and a telescopic sleeve (2), characterized in that: The transmission shaft pipe (1) and the telescopic sleeve (2) are connected through the connecting piece (3), the connecting piece (3) includes the telescopic cover (31), the two ends of the telescopic cover (31) are connected with the connecting ring one (33) and the connecting ring two (32), the connecting ring one (33) on the telescopic cover (31) is connected with the flange plate one (12) through bolts, the connecting ring two (32) on the telescopic cover (31) is connected with the flange plate two (21) through bolts, the flange plate one (12) and the flange plate two (21) are fixedly installed on the transmission shaft pipe (1) and the telescopic sleeve (2), the one end of the transmission shaft pipe (1) near the telescopic cover (31) is provided with the telescopic shaft (11), the one end of the telescopic sleeve (2) near the telescopic cover (31) is provided with the telescopic groove (23), the telescopic shaft (11) is installed in the telescopic groove (23).

2. The slip shaft for an automotive propeller shaft according to claim 1, characterized by: The flange plate one (12) is provided with the mounting ring one (13) on the side near the connecting ring one (33), the outer side of the connecting ring one (33) is provided with the mounting groove one (331), the mounting groove one (331) is correspondingly matched with the mounting ring one (13), and the sealing ring one (332) is mounted on the inner wall of the mounting groove one (331).

3. The slip shaft for an automotive propeller shaft as set forth in claim 2, wherein: The flange plate two (21) is provided with the mounting ring two (22) on the side near the connecting ring two (32), the outer side of the connecting ring two (32) is provided with the mounting groove two (321), the mounting groove two (321) is correspondingly matched with the mounting ring two (22), and the sealing ring two (322) is mounted on the inner wall of the mounting groove two (321).

4. The slip shaft for an automotive propeller shaft as set forth in claim 1, wherein: The rotating grooves (111) are arranged in an annular array on the telescopic shaft (11), the rotating grooves (111) extend along the axis direction of the telescopic shaft (11), the rollers (112) are rotatably installed in the rotating grooves (111), and the rollers (112) are in a cylindrical shape.

5. The slip shaft for an automotive propeller shaft as set forth in claim 4, wherein: The moving grooves (24) are arranged in an annular array on the inner wall of the telescopic groove (23), the moving grooves (24) extend along the axial direction of the moving grooves (24), and the width of the moving grooves (24) is matched with the length of the rollers (112).

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