Oil leakage prevention clutch slave cylinder input structure

Abstract

The utility model belongs to the field of automobile accessories, and particularly relates to an oil leakage prevention clutch slave cylinder input structure which comprises a pump shell, an oil tank, a threaded connection sleeve, a reinforcing sleeve and a sealing ring, an oil inlet nozzle is arranged on the pump shell, an oil outlet nozzle is arranged on the oil tank, the threaded connection sleeve is arranged outside the oil outlet nozzle in a sleeving mode and connected to the oil outlet nozzle in a threaded mode, and the reinforcing sleeve is arranged on the oil tank. The reinforcing sleeve is arranged outside the threaded connecting sleeve in a sleeving mode, one end face of the reinforcing sleeve is fixed to the outer surface of the pump shell, and the other end face of the reinforcing sleeve is fixed to the outer surface of the oil tank; the thread connecting sleeve is sleeved with the sealing ring, a groove is formed in the top end of the inner wall face of the reinforcing sleeve, the sealing ring is partially contained in the groove, and the oil outlet nozzle can stretch into the oil inlet nozzle. The oil leakage prevention effect between the oil tank and the clutch slave cylinder can be improved, and normal work of a clutch is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of automobile parts, and particularly relates to an anti-oil-leakage clutch slave cylinder input structure. Background Technique

[0002] The clutch slave cylinder is a transmission device connecting the clutch pedal. When the driver wants to shift gears or start, the clutch pedal is depressed, and the hydraulic oil in the clutch master cylinder is input into the oil tank due to pressure. The hydraulic oil in the oil tank is then delivered to the clutch slave cylinder. The pressure of the hydraulic oil is applied to the plunger cup in the clutch slave cylinder, thereby pushing the plunger rod forward. The plunger rod pushes the release lever forward, and then pushes the release bearing to press down the release lever, so as to achieve the purpose of cutting off the connection between the engine and the transmission device.

[0003] In the current clutch slave cylinder, the oil outlet nozzle of the oil tank is directly sleeved and threadedly connected to the oil inlet nozzle on the clutch slave cylinder. Since the vehicle generates large vibrations during driving, it is easy to cause the connection between the oil outlet nozzle of the oil tank and the oil inlet nozzle to become loose, and the thread structure on the oil outlet nozzle or the oil inlet nozzle is also prone to wear, resulting in oil leakage at the connection, and ultimately causing the clutch to malfunction. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the problem that in the existing clutch system, the oil outlet nozzle of the oil tank and the oil inlet nozzle of the clutch slave cylinder are prone to become loose due to vibration, and the thread structure on the oil outlet nozzle or the oil inlet nozzle is also prone to wear, resulting in oil leakage at the connection, and ultimately causing the clutch to malfunction.

[0005] To solve the above technical problem, the utility model provides an anti-oil-leakage clutch slave cylinder input structure, which includes a pump housing, an oil tank, a threaded connection sleeve, a reinforcing sleeve and a sealing ring. An oil inlet nozzle is provided on the pump housing, and an oil outlet nozzle is provided on the oil tank. The threaded connection sleeve is sleeved outside the oil outlet nozzle and is threadedly connected to the oil outlet nozzle. The reinforcing sleeve is sleeved outside the threaded connection sleeve, and the outer wall surface of the threaded connection sleeve just abuts against the inner wall surface of the reinforcing sleeve. One end face of the reinforcing sleeve is fixed to the outer surface of the pump housing, and the other end face of the reinforcing sleeve is fixed to the outer surface of the oil tank. The sealing ring is sleeved outside the threaded connection sleeve. A groove is provided at the top of the inner wall surface of the reinforcing sleeve, and part of the sealing ring is received in the groove. The oil outlet nozzle can extend into the oil inlet nozzle.

[0006] Preferably, it further includes a shock-proof ring. There is a gap between the free end of the oil outlet nozzle and the outer wall of the pump housing. The shock-proof ring is sleeved on the oil outlet nozzle near the outer surface of the pump housing. The shock-proof ring is located in the gap, and the length value of the shock-proof ring is slightly greater than the height value of the gap, so that the free end of the oil outlet nozzle can slightly compress the shock-proof ring.

[0007] Preferably, a platform surface is provided on the pump housing. One end of the reinforcing sleeve is provided with a flange I. The platform surface is provided with a threaded blind hole. The flange I and the threaded blind hole are connected by a bolt I. The other end of the reinforcing sleeve is provided with a flange II. A connecting ear is provided at the bottom of the fuel tank. The flange II and the connecting ear are fixed by a bolt II.

[0008] Preferably, the internal passage of the threaded connecting sleeve is in a stepped shape, including a small-diameter section and a large-diameter section distributed up and down. The end surface of the small-diameter section away from the fuel tank abuts against the free-end surface of the fuel inlet nozzle, and the large-diameter section is sleeved outside the fuel inlet nozzle.

[0009] The technical solution of the present utility model has the following beneficial effects:

[0010] The present utility model does not directly use a threaded connection between the fuel outlet nozzle and the fuel inlet nozzle. Instead, a threaded connecting sleeve is provided at the bottom of the fuel tank. The threaded connecting sleeve can be sleeved outside the fuel inlet nozzle and is threadedly connected to the fuel inlet nozzle. The diameter of the fuel outlet nozzle is smaller than that of the fuel inlet nozzle and it directly extends into the fuel inlet nozzle. Even if there is a little looseness in the connection between the threaded connecting sleeve and the fuel inlet nozzle due to vehicle vibration, oil leakage will not occur temporarily.

[0011] In order to reinforce the connection between the threaded connecting sleeve and the fuel inlet nozzle and prevent them from being loosened by vibration, a reinforcing sleeve is sleeved outside the threaded connecting sleeve. Both ends of the reinforcing sleeve are fixed to the fuel tank and the pump housing respectively, so that basically the threaded connecting sleeve and the fuel inlet nozzle will not become loose.

[0012] In order to further improve the connection firmness between the threaded connecting sleeve and the fuel inlet nozzle, the present utility model is also provided with a shock-proof ring. A shock-proof ring is sleeved on the outer surface of the fuel outlet nozzle close to the pump housing. The shock-proof ring can effectively reduce vibration and prevent the threaded connecting sleeve and the fuel inlet nozzle from being loosened due to vibration. Description of the Drawings

[0013] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Explanation of the reference numerals in the drawings: 1, pump housing; 11, platform surface; 12, threaded blind hole; 2, fuel tank; 3, threaded connecting sleeve; 31, small-diameter section; 32, large-diameter section; 4, reinforcing sleeve; 41, flange I; 42, flange II; 43, groove; 5, sealing ring; 6, fuel inlet nozzle; 7, fuel outlet nozzle; 8, shock-proof ring; 9, bolt I; 10, bolt II; 20, connecting ear.

[0015] Figure 1 This is the overall cross-sectional view of the present utility model;

[0016] Figure 2 This is the cross-sectional view of the fuel tank of the present utility model;

[0017] Figure 3 This is the cross-sectional view of the pump housing of the present utility model. Specific embodiments

[0018] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] The utility model provides an anti-oil-leakage input structure for a clutch slave cylinder, which comprises a pump housing 1, a fuel tank 2, a threaded connection sleeve 3, a reinforcing sleeve 4 and a sealing ring 5. An oil inlet nozzle 6 is arranged on the pump housing 1, and an oil outlet nozzle 7 is arranged on the fuel tank 2. The threaded connection sleeve 3 is sleeved outside the oil outlet nozzle 7 and is threadedly connected to the oil outlet nozzle 7. The reinforcing sleeve 4 is sleeved outside the threaded connection sleeve 3, and the outer wall surface of the threaded connection sleeve 3 just abuts against the inner wall surface of the reinforcing sleeve 4. One end face of the reinforcing sleeve 4 is fixed to the outer surface of the pump housing 1, and the other end face of the reinforcing sleeve 4 is fixed to the outer surface of the fuel tank 2; the sealing ring 5 is sleeved outside the threaded connection sleeve 3, a groove 43 is arranged at the top end of the inner wall surface of the reinforcing sleeve 4, and part of the sealing ring 5 is accommodated in the groove 43. The oil outlet nozzle 7 can extend into the oil inlet nozzle 6.

[0023] The working principle of the utility model: when the driver steps on the clutch pedal, the hydraulic pressure of the clutch master cylinder increases, and the hydraulic oil is sent into the fuel tank 2. The oil in the fuel tank 2 is then sent into the oil inlet nozzle 6 in the clutch slave cylinder from the oil outlet nozzle 7.

[0024] The utility model does not directly adopt threaded connection between the oil outlet nozzle 7 and the oil inlet nozzle 6. Instead, a threaded connection sleeve 3 is further arranged at the bottom of the fuel tank 2. The threaded connection sleeve 3 can be sleeved outside the oil inlet nozzle 6 and is threadedly connected to the oil inlet nozzle 6. The diameter of the oil outlet nozzle 7 is smaller than that of the oil inlet nozzle 6, and it directly extends into the oil inlet nozzle 6. Even if the threaded connection between the threaded connection sleeve 3 and the oil inlet nozzle 6 becomes slightly loose due to vehicle vibration, oil leakage will not occur temporarily. In order to reinforce the connection between the threaded connection sleeve 3 and the oil inlet nozzle 6 and prevent them from being loosened by vibration, a reinforcing sleeve 4 is sleeved outside the threaded connection sleeve 3. The two ends of the reinforcing sleeve 4 are respectively fixed to the fuel tank 2 and the pump housing 1, so that the threaded connection between the threaded connection sleeve 3 and the oil inlet nozzle 6 is basically not loosened.

[0025] In order to further improve the connection firmness between the threaded connection sleeve 3 and the oil inlet nozzle 6, the utility model further comprises a shock-proof ring 8. The shock-proof ring 8 can effectively reduce vibration and prevent loosening between the two due to vibration. There is a gap between the free end of the oil outlet nozzle 7 and the outer wall of the pump housing 1. A shock-proof ring 8 is sleeved on the oil outlet nozzle 7 close to the outer surface of the pump housing 1. The shock-proof ring 8 is located in the gap, and the length value of the shock-proof ring 8 is slightly larger than the height value of the gap, so that the free end of the oil outlet nozzle 7 can slightly compress the shock-proof ring 8.

[0026] To prevent hydraulic oil from leaking along the gap line a-b-c-d-e-f after the oil outlet nozzle 7 is damaged, the sealing ring 5 is sleeved outside the threaded connection sleeve 3. A groove 43 is provided at the top of the inner wall surface of the reinforcing sleeve 4, and a part of the sealing ring 5 is accommodated in the groove 43. The sealing ring 5 blocks the outermost outlet of this gap line, preventing the hydraulic oil from leaking out along this gap line. The setting of the shock-proof ring 8 also avoids the possible leakage of hydraulic oil from the gap line g-h. In short, the sealing ring 5 and the shock-proof ring 8 further strengthen the oil-tightness between the oil outlet nozzle 7 and the oil inlet nozzle 6 or reduce the probability of oil leakage between them.

[0027] Specifically, the connection mode of the reinforcing sleeve 4 with the fuel tank 2 and the clutch slave cylinder is as follows:

[0028] A platform surface 11 is provided on the pump housing 1. One end of the reinforcing sleeve 4 is provided with a flange Ⅰ 41. The platform surface 11 is provided with a threaded blind hole 12. The flange Ⅰ 41 and the threaded blind hole 12 are connected by a bolt Ⅰ 9. The platform surface 11 can facilitate the head of the bolt Ⅰ 9 to be completely attached to the outer surface of the pump housing 1, improving the tightness of the connection between the flange Ⅰ 41 and the threaded blind hole 12. The other end of the reinforcing sleeve 4 is provided with a flange Ⅱ 42. A connecting ear 20 is provided at the bottom of the fuel tank 2. The flange Ⅱ 42 and the connecting ear 20 are fixed by a bolt Ⅱ 10.

[0029] To facilitate the connection between the threaded connection sleeve 3 and the oil inlet nozzle 6, the internal passage of the threaded connection sleeve 3 is set in a stepped shape, including a small-diameter section 31 and a large-diameter section 32 distributed up and down. The end surface of the small-diameter section 31 far from the fuel tank 2 abuts against the free-end end surface of the oil inlet nozzle 6, and the large-diameter section 32 is sleeved outside the oil inlet nozzle 6. When the threaded connection sleeve 3 sleeved outside the oil inlet nozzle 6 is tightened, since the free-end end of the small-diameter section 31 is located above the oil inlet nozzle 6, the oil inlet nozzle 6 will provide a lower limit for the screwing-in of the threaded connection sleeve 3. When the free-end end surface of the small-diameter section 31 abuts against the end surface of the oil inlet nozzle 6, it indicates that the threaded connection sleeve 3 has been screwed to the end, which can provide a guiding function during installation and also prevent the phenomenon that the shock-proof ring 8 is compressed too much by the threaded connection sleeve 3 and gets stuck between them.

[0030] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, 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 manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the creation of the present utility model.

Claims

1. An anti-oil leakage input structure of a clutch slave cylinder, comprising a pump housing (1) and a fuel tank (2). An oil inlet nozzle (6) is provided on the pump housing (1), and an oil outlet nozzle (7) is provided on the fuel tank (2). It is characterized in that, it further comprises a threaded connection sleeve (3), a reinforcing sleeve (4) and a sealing ring (5). The threaded connection sleeve (3) is sleeved outside the oil outlet nozzle (7) and is threadedly connected to the oil outlet nozzle (7). The reinforcing sleeve (4) is sleeved outside the threaded connection sleeve (3). The outer wall surface of the threaded connection sleeve (3) exactly abuts against the inner wall surface of the reinforcing sleeve (4). One end face of the reinforcing sleeve (4) is fixed to the outer surface of the pump housing (1), and the other end face of the reinforcing sleeve (4) is fixed to the outer surface of the fuel tank (2). The sealing ring (5) is sleeved outside the threaded connection sleeve (3). A groove is provided at the top of the inner wall surface of the reinforcing sleeve (4), and a part of the sealing ring (5) is accommodated in the groove. The oil outlet nozzle (7) can extend into the oil inlet nozzle (6).

2. The input structure of an oil leakage prevention clutch slave cylinder according to claim 1, wherein It further comprises a shock-proof ring (8). There is a spacing between the free end of the oil outlet nozzle (7) and the outer wall of the pump housing (1). The shock-proof ring (8) is sleeved on the oil outlet nozzle (7) near the outer surface of the pump housing (1). The shock-proof ring (8) is located within the spacing. The length value of the shock-proof ring (8) is slightly greater than the height value of the spacing, so that the free end of the oil outlet nozzle (7) can slightly compress the shock-proof ring (8).

3. The input structure of an anti-oil-leakage clutch slave cylinder according to claim 1, characterized in that, A platform surface (11) is provided on the pump housing (1). One end of the reinforcing sleeve (4) is provided with a flange I (41). A threaded blind hole (12) is provided on the platform surface (11). The flange I (41) and the threaded blind hole (12) are connected by a bolt I (9). The other end of the reinforcing sleeve (4) is provided with a flange II (42). A connecting ear (20) is provided at the bottom of the fuel tank (2). The flange II (42) and the connecting ear (20) are fixed by a bolt II (10).

4. The input structure of an anti-oil leakage clutch slave cylinder according to claim 1, characterized in that, The internal passage of the threaded connection sleeve (3) is in a stepped shape, including a small-diameter section (31) and a large-diameter section (32) distributed up and down. The end face of the small-diameter section (31) away from the fuel tank (2) abuts against the free end face of the oil inlet nozzle (6), and the large-diameter section (32) is sleeved outside the oil inlet nozzle (6).

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