Split type oil duct connector

Abstract

The utility model provides a split type oil duct connector which can solve the problems that when an existing connecting pipe is used for connecting two oil ducts in a sealed mode, the requirement for the coaxiality of two oil duct openings is high, and abrasion and local oil leakage occur after long-term operation. The connector comprises an oil guide core, an oil guide device, an elastic part support and an elastic part, one end of the oil guide core is provided with an arc-shaped mounting groove, a first oil passing hole is formed in the oil guide core, the side wall of the oil guide core is provided with an annular boss, one end of the boss is provided with a convex ring, and the end face of one end of the oil guide device is arc-shaped and used for being matched with the mounting groove in a concave-convex mode so that the oil guide device can rotate relative to the oil guide core. A second oil passing hole is formed in the oil guide device, the oil guide core is sleeved with the elastic piece support, the section of one axial side of the elastic piece support is in an L shape, the annular face with the smallest inner diameter is in clearance fit with the outer surface of the oil guide core, and the outer surface of the elastic piece support is in clearance fit with the inner wall of the convex ring. And an annular mounting cavity for sleeving the elastic piece is formed among the inner wall of the elastic piece support, the outer wall of the oil guide core, the end face of one end of the boss and the inner wall of the convex ring.

Description

Technical Field

[0001] The utility model relates to a device for connecting oil channels, in particular to a split oil channel connector. Background Art

[0002] Lubricating oil is an important medium in the transmission, used to lubricate parts and reduce the heat of parts. Compared with grease lubrication, it can not only reduce heat, but also take away tiny particles caused by local wear, which is conducive to better operation of the transmission. The lubricating oil channels in the transmission generally exist in the transmission housing and parts. According to the connection status of the oil channel ports, the connection methods between the oil channels can be divided into static connection and dynamic connection; no matter what kind of oil channel connection method is used, there are strict requirements on the sealing of the connection to ensure that there will be no obvious oil leakage and oil pressure drop when the oil flows, thereby ensuring the flow and pressure at the oil channel outlet and ensuring lubrication between parts. Static connection of the oil channel is common between two housings. Generally, a sealing ring larger than the diameter of the oil hole is set at the connection to ensure both flow and sealing. The dynamic connection of the oil channel is common between the housing and the drive shaft, and between the drive shafts. At this time, it is difficult to seal the oil channel connection. Currently, connecting pipes are usually used for sealing connection. However, the connecting pipes have the following problems: 1. The coaxiality requirements of the two oil channel openings are high, otherwise the connecting pipe will be tilted, resulting in local wear and oil leakage; 2. Wear and local oil leakage will occur after long-term operation.

[0003] The Chinese patent with publication number CN208764296U and titled "An oil guide pipe assembly, transmission and vehicle" discloses that the oil guide pipe assembly is arranged between the transmission housing and the transmission housing, the oil guide pipe assembly includes a plurality of oil guide pipes and a fixing member for fixing the plurality of oil guide pipes, the plurality of oil guide pipes are arranged at intervals on the fixing member, the first end of the oil guide pipe is connected to the transmission housing, and the second end is connected to the transmission housing. However, the problem with the oil guide pipe assembly is that it is not suitable for connecting the oil passages between the housing and the transmission shaft, and between the transmission shafts. Utility Model Content

[0004] The utility model aims to solve the technical problems that when two oil passages are connected by an existing connecting pipe seal, the coaxiality requirements of the two oil passage openings are high, and wear and local oil leakage may occur after long-term operation, and provide a split oil passage connector.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A split oil channel connector, which is special in that:

[0007] It includes an oil guide core, an oil guide, an elastic member support and an elastic member;

[0008] The oil guide core is cylindrical, one end of which is provided with an arc-shaped mounting groove, the inside of the oil guide core is provided with a first oil hole connected with the mounting groove along its axis, and the side wall thereof is provided with an annular boss along its circumference; the end of the boss away from the mounting groove is provided with a convex ring along its circumference; the other end of the oil guide core is used for sealing and mounting in the oil passage hole of the external transmission housing;

[0009] One end surface of the oil guide is arc-shaped and is used to cooperate with the mounting groove so that the oil guide can rotate relative to the oil guide core; the other end of the oil guide is used to be sealed and installed in the oil passage hole of the external transmission shaft; the interior of the oil guide is provided with a second oil passage hole connected with the first oil passage hole;

[0010] The elastic member support is sleeved outside the oil guide core, and the cross section of one axial side thereof is L-shaped; the annular surface with the smallest inner diameter of the elastic member support is clearance-matched with the outer surface of the oil guide core, and the outer surface of the elastic member support is clearance-matched with the inner wall of the convex ring; so that an annular installation cavity is formed between the inner wall of the elastic member support, the outer wall of the oil guide core, the end surface of the boss away from the installation groove, and the inner wall of the convex ring;

[0011] The elastic member is sleeved in the annular installation cavity.

[0012] Furthermore, an outer limiting ring protruding outward is arranged on the outer wall of the elastic member support along its circumference; the outer limiting ring is clearance-matched with the inner surface of the protruding ring;

[0013] An inner limiting ring protruding inward is arranged on the inner wall of the convex ring along its circumference, and the inner limiting ring is in clearance fit with the outer surface of the elastic member support;

[0014] The outer diameter of the outer limiting ring is greater than the inner diameter of the inner limiting ring, so that the outer limiting ring and the inner limiting ring can cooperate with each other, thereby limiting the elastic member support.

[0015] Furthermore, a stop shoulder is provided on the outer wall of the oil guide along its circumference for axially limiting the external transmission shaft.

[0016] Furthermore, the second oil-passing hole is a stepped hole, and the small-diameter section of the stepped hole is far away from the first oil-passing hole.

[0017] Furthermore, an annular secondary step installation groove is provided at the notch of the installation groove;

[0018] An oil seal is installed between the groove wall of the secondary step installation groove and the outer surface of the oil guide.

[0019] Furthermore, a first annular mounting groove is provided on the outer wall of the other end of the oil guide core; a first sealing ring is provided in the first annular mounting groove;

[0020] A second annular mounting groove is arranged on the outer wall of the other end of the oil guide; a second sealing ring is arranged in the second annular mounting groove.

[0021] Furthermore, the elastic member is a spring.

[0022] Beneficial effects of the utility model:

[0023] 1. The utility model provides a split oil channel connector with a simple overall structure and convenient installation. The oil guide in the oil channel connector can rotate relative to the oil guide core, so the coaxiality requirements of the two oil channel ports are relatively low, the adaptability is good, the durability is good, and the problems of local wear and oil leakage can be avoided, which is conducive to ensuring the reliability of the transmission and will not cause economic losses.

[0024] 2. The outer limiting ring and the inner limiting ring in the utility model are conducive to improving the reliability of the elastic member support and the axial movement of the elastic member. The second oil-passing hole in the utility model is a stepped hole, which can achieve a throttling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a cross-sectional view of a split oil channel connector of the utility model;

[0026] Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of the utility model.

[0027] Description of reference numerals:

[0028] 2-oil guide, 20-second oil hole, 21-shoulder, 3-elastic member support, 4-first sealing ring, 5-second sealing ring, 6-elastic member, 7-outer limiting ring, 8-inner limiting ring, 9-oil seal, 10-oil guide core, 11-first oil hole, 12-mounting groove, 13-boss, 14-convex ring, 15-secondary step mounting groove. DETAILED DESCRIPTION

[0029] like Figure 1-Figure 2As shown, a split oil channel connector includes an oil guide core 10, an oil guide 2, an elastic member support 3 and an elastic member 6. Specifically, the oil guide core 10 is cylindrical, and an arc-shaped mounting groove 12 is provided at one end thereof. A first oil through hole 11 communicating with the mounting groove 12 is provided inside the oil guide core 10 along its axis, and an annular secondary step mounting groove 15 is provided at the notch of the mounting groove 12. An annular boss 13 is provided along the circumference of the side wall of the oil guide core 10, and a convex ring 14 is provided along the circumference of the boss 13 away from the mounting groove 12. A first annular mounting groove is provided on the outer wall of the other end of the oil guide core 10, and a first sealing ring 4 is provided in the first annular mounting groove. The other end of the oil guide core 10 is sealed and installed in the oil channel hole of the external transmission housing through the first sealing ring 4, so that the oil guide core 10 has a stable position. The end surface of one end of the oil guide 2 is in an arc shape, which is used to match the mounting groove 12 in a concave-convex manner, so that the oil guide 2 can rotate relative to the oil guide core 10. An oil seal 9 is installed between the groove wall of the secondary step mounting groove 15 and the outer surface of the oil guide 2. A second annular mounting groove is arranged on the outer wall of the other end of the oil guide 2, and a second sealing ring 5 is arranged in the second annular mounting groove. The other end of the oil guide 2 is sealed and installed in the oil passage hole of the external transmission shaft through the second sealing ring 5, so that the oil guide 2 and the transmission shaft can be relatively stationary. The inside of the oil guide 2 is provided with a second oil hole 20 connected with the first oil hole 11. The second oil hole 20 is a step hole, and the small diameter section of the step hole is far away from the first oil hole 11. A shoulder 21 is arranged on the outer wall of the oil guide 2 along its circumference, and the shoulder 21 abuts against the end face of the transmission shaft to limit the axial position of the transmission shaft. The elastic member support 3 is sleeved outside the oil guide core 10, and its axial side cross section is L-shaped. The annular surface with the smallest inner diameter of the elastic member support 3 is in clearance with the outer surface of the oil guide core 10. An outer stop ring 7 protruding outward is arranged on the outer wall of the elastic member support 3 along its circumference. The outer stop ring 7 is in clearance with the inner surface of the convex ring 14, so that an annular installation cavity is formed between the inner wall of the elastic member support 3, the outer wall of the oil guide core 10, the end surface of the boss 13 away from the installation groove 12, and the inner wall of the convex ring 14. An inner stop ring 8 protruding inward is arranged on the inner wall of the convex ring 14 along its circumference. The inner stop ring 8 is in clearance with the outer surface of the elastic member support 3. The outer diameter of the outer stop ring 7 is greater than the inner diameter of the inner stop ring 8, so that the outer stop ring 7 and the inner stop ring 8 can be matched, thereby limiting the elastic member support 3. The elastic member 6 is sleeved in the annular installation cavity and is in a pre-stressed state. The elastic member 6 in this embodiment is a spring.

[0030] The working principle of this embodiment is as follows: when the transmission shaft starts to rotate, the oil in the oil passage hole of the transmission housing will enter the oil passage hole of the transmission shaft through the first oil passage hole 11 and the second oil passage hole 20 in sequence. At the same time, due to the concave-convex fit between one end of the oil guide 2 and the mounting groove 12, the oil guide 2 can rotate relative to the oil guide core 10, and there is a small gap. The oil will enter the small gap to lubricate the rotating matching surface of the two, which can avoid wear and extend the service life. Due to the concave-convex fit between one end of the oil guide 2 and the mounting groove 12, and the oil seal 9 is installed between the groove wall of the second-level step mounting groove 15 and the outer surface of the oil guide 2, it is allowed that there is an angle between one end of the oil guide 2 and the mounting groove 12. At the same time, due to the use of the first sealing ring 4 and the second sealing ring 5, when the coaxiality of the oil passage hole of the transmission housing and the oil passage hole of the transmission shaft is poor, automatic fine adjustment of the deflection can be achieved, and finally an angle contact is formed between one end of the oil guide 2 and the mounting groove 12.

[0031] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or replacements within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A split oil channel connector, characterized in that: It comprises an oil guide core (10), an oil guide (2), an elastic member support (3) and an elastic member (6); The oil guide core (10) is cylindrical, and one end of the oil guide core is provided with a circular arc-shaped mounting groove (12). The inside of the oil guide core (10) is provided with a first oil hole (11) connected with the mounting groove (12) along its axis, and a side wall thereof is provided with an annular boss (13) along its circumference; the boss (13) is provided with a convex ring (14) along its circumference at one end away from the mounting groove (12); the other end of the oil guide core (10) is used for sealing and mounting in the oil passage hole of the external transmission housing; One end surface of the oil guide (2) is arc-shaped and is used to cooperate with the mounting groove (12) in a concave-convex manner, so that the oil guide (2) can rotate relative to the oil guide core (10); the other end of the oil guide (2) is used to be sealed and installed in the oil passage hole of the external transmission shaft; the oil guide (2) is provided with a second oil passage hole (20) in communication with the first oil passage hole (11); The elastic member support (3) is sleeved outside the oil guide core (10), and its axial side cross section is L-shaped; the annular surface with the smallest inner diameter of the elastic member support (3) is clearance-matched with the outer surface of the oil guide core (10), and the outer surface of the elastic member support (3) is clearance-matched with the inner wall of the convex ring (14); so that an annular installation cavity is formed between the inner wall of the elastic member support (3), the outer wall of the oil guide core (10), the end surface of the boss (13) away from the installation groove (12), and the inner wall of the convex ring (14); The elastic member (6) is sleeved in the annular mounting cavity.

2. A split oil channel connector according to claim 1, characterized in that: An outer limiting ring (7) protruding outward is arranged on the outer wall of the elastic member support (3) along its circumference; the outer limiting ring (7) is clearance-matched with the inner surface of the protruding ring (14); An inner limiting ring (8) protruding inward is arranged on the inner wall of the convex ring (14) along its circumference, and the inner limiting ring (8) is loosely matched with the outer surface of the elastic member support (3); The outer diameter of the outer limiting ring (7) is greater than the inner diameter of the inner limiting ring (8), so that the outer limiting ring (7) and the inner limiting ring (8) can cooperate with each other, thereby limiting the elastic member support (3).

3. A split oil channel connector according to claim 1 or 2, characterized in that: A stop shoulder (21) is provided on the outer wall of the oil guide (2) along its circumference, and is used to limit the axial position of the external transmission shaft.

4. A split oil channel connector according to claim 3, characterized in that: The second oil passage hole (20) is a stepped hole, and the small diameter section of the stepped hole is far away from the first oil passage hole (11).

5. A split oil channel connector according to claim 4, characterized in that: An annular secondary step installation groove (15) is provided at the notch of the installation groove (12); An oil seal (9) is installed between the groove wall of the secondary step installation groove (15) and the outer surface of the oil guide (2).

6. A split oil channel connector according to claim 5, characterized in that: A first annular mounting groove is arranged on the outer wall of the other end of the oil guide core (10); a first sealing ring (4) is arranged in the first annular mounting groove; A second annular mounting groove is arranged on the outer wall of the other end of the oil guide (2); a second sealing ring (5) is arranged in the second annular mounting groove.

7. A split oil channel connector according to claim 6, characterized in that: The elastic member (6) is a spring.

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