Clutch master cylinder for oil distribution tube assembly

Abstract

The utility model relates to a clutch master cylinder of oil distribution pipe assembly, the oil inlet nozzle on the pump body has the core-pulling circular inner hole and circular limiting step, the joint of oil pipe assembly includes the connecting pipe of the hole pipe and the oil supply pipe body, the outer wall of hole pipe is equipped with the annular groove of sealing ring assembly, the hole pipe is connected into the core-pulling circular inner hole, and the rotating fit gap is left between the hole pipe and the core-pulling circular inner hole, the joint still has the limiting annular cover, and the limiting annular cover is connected on the joint through the support, the limiting annular cover is covered in the oil inlet nozzle, the both sides of limiting annular cover are equipped with the open slot, and the snap spring is still equipped outside the limiting annular cover, and the snap spring passes through the open slot and is limited with the circular limiting step and is connected. The joint can be relatively rotated to provide the freedom degree after being connected on the oil inlet nozzle of pump body, can adjust the position and adapt the installation position of the oil supply pipe body of joint, satisfies the assembly demand of different positions, avoids the torsional change of oil supply pipe body, reduces the risk of loosening or tearing, and the joint is convenient to disassemble and assemble.

Description

Technical Field

[0001] This utility model relates to a clutch master cylinder. Background Technology

[0002] The clutch master cylinder housing (i.e., the pump body) has an oil inlet. Because the oil inlet of the housing is made by splitting the mold, there is a parting line and burrs on the outside of the oil inlet. After the oil pipe (such as a rubber hose) is sleeved on the outside of the oil inlet, it is easy to cause leakage due to displacement and twisting during use. In addition, the outer circle of the oil inlet is easily damaged during transportation, storage, material handling and assembly, which also poses a risk of leakage. Furthermore, the oil pipe is tightly connected and fixed on the outside of the oil inlet. During vehicle use, the oil pipe may twist, and there is a risk of the oil pipe loosening or tearing. Utility Model Content

[0003] In view of the technical problems existing in the background art, the present invention aims to provide a clutch master pump with an oil distribution pipe assembly that can be rotated and adjusted to adapt to the position of the oil pipe and whose oil pipe is not easily twisted.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a clutch master pump of an oil pipe assembly, including an oil pipe assembly and an oil inlet on the pump body, characterized in that: the oil inlet has a core-pulling circular inner hole and a circular limiting step, the circular limiting step being located on the outer wall at the port of the oil inlet; the oil pipe assembly includes an oil pipe body and a connector; the connector includes an inlet pipe and a connecting pipe connected to the oil supply pipe body; the connecting pipe is connected to the inlet pipe; an annular groove is provided on the outer wall of the inlet pipe; a sealing ring is provided in the annular groove; the inlet pipe is inserted into the core-pulling circular inner hole; the sealing ring is located between the core-pulling circular inner hole and the inlet pipe; a rotational fit clearance is left between the inlet pipe and the core-pulling circular inner hole; the connector also has a limiting annular sleeve, the limiting annular sleeve being connected to the connector through a bracket; the limiting annular sleeve is sleeved outside the oil inlet; opening slots are provided on both sides of the limiting annular sleeve; a retaining spring is also provided outside the limiting annular sleeve; the retaining spring passes through the opening slots and engages with the circular limiting step for limiting and locking.

[0005] The following optimizations or supplementary explanations can be made to the above technical solutions.

[0006] For example, the retaining ring uses a wire-formed retaining ring, which is a relatively mature technology. In addition, the retaining ring has a U-shaped elastic zone in the middle, and snap-fit ​​strips on both sides of the retaining ring; the snap-fit ​​strips are located on both sides of the U-shaped elastic zone, and the snap-fit ​​strips are set at the opening slots.

[0007] Among them, the snap-fit ​​edge strip bends and matches to the outer wall of the oil inlet, and the outer wall of the oil inlet is a circular outer wall. In the connected state, the snap-fit ​​edge strip is limited and snapped into the inner side of the circular limit step.

[0008] In addition, the connecting pipe and the manhole pipe are at right angles.

[0009] In addition, the bracket includes a front connecting bracket and a rear connecting bracket, with opening slots located on the left and right sides of the limiting annular sleeve.

[0010] The beneficial effects of this utility model are that the clutch master pump of the oil pipe assembly can rotate relative to the oil inlet of the pump body after being connected to the oil inlet by the connector, providing a degree of freedom. The position can be adjusted to adapt to the installation position of the connected oil pipe body, meet the assembly requirements of different positions, avoid the twisting of the oil pipe body, reduce the risk of loosening or tearing, and the connector is relatively easy to disassemble and assemble. Attached Figure Description

[0011] The following description, in conjunction with the accompanying drawings, details the embodiments and working principles of this utility model.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 for Figure 1 A schematic diagram of the pump body.

[0014] Figure 3 for Figure 1 A schematic diagram of the structure of the intermediate connector.

[0015] Figure 4 for Figure 3 Sectional view of AA.

[0016] Figure 5 This is a schematic diagram of the snap ring in this utility model.

[0017] Figure 6 This is a cross-sectional schematic diagram showing the connection state between the oil inlet nozzle and the oil pipe assembly in this utility model.

[0018] Figure 7 This is a three-dimensional structural diagram of the connection state between the oil inlet nozzle and the oil pipe assembly in this utility model.

[0019] Figure 8 for Figure 7 A schematic diagram of the structure in its disassembled state.

[0020] Figure 9 for Figure 7 A structural diagram from another angle.

[0021] Figure 10 for Figure 9 A schematic diagram of the structure in its disassembled state.

[0022] Figure 11 for Figure 9 A structural diagram from another angle.

[0023] Figure 12 for Figure 11 A schematic diagram of the structure in its disassembled state.

[0024] In the picture: 1. Pump body; 10. Oil inlet; 11. Circular inner hole for core pulling; 12. Circular limiting step; 2. Tubing assembly; 20. Tubing body; 21. Connector; 22. Manhole pipe; 23. Connecting pipe; 24. Annular groove; 25. Sealing ring; 26. Limiting ring sleeve; 27. Bracket; 28. Opening groove; 29. ​​Snap ring; 291. U-shaped elastic zone; 292. Snap-fit ​​edge strip; 34. Sealing ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the implementation of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Referring to the accompanying drawings, the clutch master pump of the oil pipe assembly in this embodiment includes an oil pipe assembly 2 and an oil inlet 10 on the pump body 1. The oil inlet 10 has a core-pulling circular inner hole 11 and a circular limiting step 12 (i.e., a raised step). The circular limiting step 12 is located on the outer wall at the port of the oil inlet 10. The core-pulling circular inner hole 11 allows the oil inlet 10 to be manufactured using a core-pulling process. The inner wall of the core-pulling circular inner hole 11 has no parting line or flash, avoiding leakage and preventing damage to the seal during connection and rotation. The oil pipe assembly 2 includes an oil pipe body 20 (usually a flexible hose, such as a rubber hose) and a connector 21. The connector 21 includes an inlet pipe 22 and a connecting pipe 23 connected to the oil supply pipe body 20. The connecting pipe 23 is connected to the inlet pipe 22 for oil delivery. The connector 21 can be a one-piece molded plastic part. The connecting pipe 23 is used to connect the oil pipe body 20. The outer wall of the inlet pipe 22 is provided with an annular groove 24. 4 is equipped with a sealing ring 3425. The inlet tube 22 is connected to the core-pulling circular inner hole 11. The sealing ring 3425 is located between the core-pulling circular inner hole 11 and the inlet tube 22. There is a rotational fit clearance between the inlet tube 22 and the core-pulling circular inner hole 11 (the inlet tube 22 can rotate relative to the core-pulling circular inner hole). The connector 21 is connected to the oil inlet 10 of the pump body 1 through the inlet tube 22 to realize the oil circuit connection. In addition, due to the rotational fit clearance, the connector 21 can rotate relative to the oil inlet 10, and the sealing ring 3425 is used to prevent leakage in this fit structure. The connector 21 can rotate relative to the oil inlet 10, with a relatively higher degree of freedom. It can adapt to the position of the oil pipe body 20 during vehicle installation and use. The oil pipe body 20 is not easy to twist, so the oil pipe body 20 is not easy to loosen or tear. In addition, there is no parting line or burr on the inner wall of the core-pulling circular inner hole 11, which avoids leakage. The seal is not easily scratched during the connection rotation. The connector 21 also has a limiting annular sleeve 26, which is connected to the connector 21 via a bracket 27 and is fitted over the oil inlet nozzle 10. The limiting ring sleeve 26 has opening slots 28 on both sides, and a retaining spring 29 is provided outside the limiting ring sleeve 26. The retaining spring 29 passes through the opening slot 28 and cooperates with the circular limiting step 12 to limit and engage. The opening slot 28 allows the inside and outside of the limiting ring sleeve 26 to communicate, so that the outer retaining spring 29 passes through the opening slot 28 to limit and engage the inner oil inlet 10, thereby connecting the entire connector 21 to the oil inlet 10 and preventing the connector 21 from detaching from the oil inlet 10.

[0027] During assembly, after aligning the inlet tube 22 of the connector 21 with the inner circular hole 11 of the oil inlet nozzle 10 and inserting it into place, the corresponding limiting ring sleeve 26 will also be fitted over the oil inlet nozzle 10. The opening groove 28 corresponds to the position of the circular limiting step 12. At this time, move the retaining spring 29 so that the retaining spring 29 can pass through the opening groove 28 to limit and engage with the circular limiting step 12 to form a limiting and anti-detachment structure, preventing the connector 21 from detaching from the oil inlet nozzle 10, and without affecting the rotation of the connector 21 relative to the oil inlet nozzle 10. The assembly is relatively convenient. After the connector 21 is aligned and inserted, the retaining spring 29 can be operated to engage. Disassembly is also relatively convenient. The connector 21 can be removed from the oil inlet nozzle 10 by releasing the retaining spring 29 from its engaging state.

[0028] The clutch master cylinder of the oil distribution pipe assembly can rotate relative to the oil inlet 10 of the pump body 1 after being connected to the oil inlet 10 by the connector 21. It can adjust the position to adapt to the installation position of the connected oil pipe body 20, meet the assembly requirements of different positions, and the core-pulling circular inner hole 11 avoids leakage, prevents the oil pipe body 20 from twisting, and reduces the risk of loosening or tearing. The connector 21 is relatively easy to disassemble and assemble.

[0029] Based on the above embodiments, the following optimizations or further explanations can be made.

[0030] For example, the retaining ring 29 can be a wire-formed retaining ring. The retaining ring 29 has a U-shaped elastic area 291 in the middle and snap-fit ​​strips 292 on both sides. That is, the snap-fit ​​strips 292 on both sides are connected at the middle position, and the snap-fit ​​strips 292 have a closing snap-fit ​​elastic force when separated by the middle position of the retaining ring 29. The snap-fit ​​strips 292 are located on both sides of the U-shaped elastic area 291 and are correspondingly set at the opening slot 28. The snap-fit ​​strips 292 of the retaining ring 29 can pass through the opening slot 28 to limit and snap into the oil inlet 10.

[0031] In addition, the snap-fit ​​strip 292 bends and fits against the outer wall of the oil inlet 10. The outer wall of the oil inlet 10 is a circular outer wall. In the connected state, the snap-fit ​​strip 292 is limited and snapped against the inner side of the circular limiting step 12. The snap-fit ​​strip 292 can better fit against the outer wall of the oil inlet 10. The snap-fit ​​strip 292 can be better blocked and limited by the circular limiting step 12 to prevent the connector 21 from retracting and detaching from the oil inlet 10, thus playing a limiting role.

[0032] For example, the connecting pipe 23 and the manhole pipe 22 are at right angles, that is, the connecting pipe 23 and the manhole pipe 22 can be set at a 90-degree angle. This structure makes it easy to install the oil pipe body 20 on the vehicle and adapt it to the installation position. Of course, other angles can also be used.

[0033] In this design, the opening slot 28 is matched with the retaining spring 29. For example, the retaining strip 292 is matched in the opening slot 28, meaning that the retaining strip 292 is in a stable state within the opening slot 28 to prevent wobbling. Typically, the diameter of the retaining strip 292 (retaining spring 29) matches the width of the opening slot 28. Similarly, the bracket 27 may include a front connecting bracket and a rear connecting bracket, meaning the bracket 27 is located on the front and rear sides of the limiting annular sleeve 26, and the opening slot 28 is located on the left and right sides of the limiting annular sleeve 26, specifically on the left and right halves of the limiting annular sleeve 26.

Claims

1. A clutch master cylinder for an oil pipe assembly, comprising an oil pipe assembly (2) and an oil inlet (10) on a pump body (1), characterized in that: The oil inlet nozzle (10) has a core-pulling circular inner hole (11) and a circular limiting step (12). The circular limiting step (12) is located on the outer wall at the port of the oil inlet nozzle (10). The tubing assembly (2) includes a tubing body (20) and a connector (21). The connector (21) includes a manhole pipe (22) and a connecting pipe (23) that connects to the tubing body (20). The connecting pipe (23) is connected to the manhole pipe (22). The outer wall of the manhole tube (22) is provided with an annular groove (24), and a sealing ring (34) (25) is provided in the annular groove (24). The manhole tube (22) is connected to the core-pulling circular inner hole (11). The sealing ring (34) (25) is located between the core-pulling circular inner hole (11) and the manhole tube (22). A rotational fit clearance is left between the manhole tube (22) and the core-pulling circular inner hole (11). The connector (21) also has a limiting ring sleeve (26), which is connected to the connector (21) via a bracket (27). The limiting ring sleeve (26) is fitted over the oil inlet (10). The limiting ring sleeve (26) has opening slots (28) on both sides. The limiting ring sleeve (26) is also provided with a retaining ring (29), which passes through the opening groove (28) and cooperates with the circular limiting step (12) to limit and engage.

2. The clutch master cylinder of the oil distribution pipe assembly as described in claim 1, characterized in that: The snap ring (29) is a wire-formed snap ring. The snap ring (29) has a U-shaped elastic area (291) in the middle and snap-fit ​​strips (292) on both sides. The snap-fit ​​edge strip (292) is located on both sides of the U-shaped elastic zone (291). The snap-fit ​​edge strip (292) is correspondingly set at the opening slot (28).

3. The clutch master cylinder of the oil distribution pipe assembly as described in claim 2, characterized in that: The snap-fit ​​strip (292) bends and fits against the outer wall of the oil inlet (10). The outer wall of the oil inlet (10) is a circular outer wall. In the connected state, the snap-fit ​​strip (292) is limited and snapped against the inner side of the circular limiting step (12).

4. The clutch master cylinder of the oil distribution pipe assembly as described in claim 1, characterized in that: The connecting pipe (23) and the manhole pipe (22) are at right angles.

5. The clutch master cylinder of the oil distribution pipe assembly as described in claim 1, characterized in that: The bracket (27) includes a front connecting bracket and a rear connecting bracket, and the opening slot (28) is located on the left and right sides of the limiting ring sleeve (26).

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