Clutch actuator

Abstract

The utility model relates to the technical field of clutches, and provides a clutch actuator which comprises an outer shell, an annular installation plate, an air inlet, an air outlet, an air inlet, an air outlet and an air outlet. The piston is arranged at the exhaust end and penetrates through the central hole; the ventilation assembly is embedded into the ventilation hole and only allows air to enter and exit from the inner cavity of the shell, the first end of a tubular body in the ventilation assembly is inserted into the ventilation hole, the second end of the tubular body is exposed out of the annular mounting plate and forms an annular inward-shrinking shoulder and an annular outward-expanding shoulder, and one end of a limiting annular column is arranged in the tubular body in a sleeved mode and supported by the bottom plate around the ventilation hole; the second side of the waterproof breathable film abuts against the inner side of the annular inwards-shrinking shoulder in a sealed mode, at least part of the waterproof breathable film is exposed out of the second end of the tubular body, the dustproof and waterproof sealing effect can be enhanced, the waterproof and waterproof connector can better adapt to severe working conditions, and the service life of the waterproof and breathable film is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, and more specifically, to a clutch actuator with dust and water protection. Background Art

[0002] An automotive clutch actuator is the executor of clutch actions. As a basic operating mechanism at the bottom layer, the basic function of the clutch actuator is to disengage and engage the clutch. The automatic operation of the clutch can improve the smoothness of starting and shifting gears, extend the service life of the clutch, reduce the labor intensity of the driver, and has important practical value. During the driving of an automobile, the driver can step on or release the clutch pedal as needed to temporarily disengage and gradually engage the engine and the transmission, so as to cut off or transmit the power input from the engine to the transmission. A clutch is a commonly used component in mechanical transmission and can separate or engage the transmission system at any time.

[0003] The existing dust-proof structure has a low protection level, resulting in external dust or water vapor entering the interior of the clutch actuator, which will damage the seals and the inner wall of the actuator housing. There is an urgent need for a clutch actuator with a dust-proof structure to solve the above problems.

[0004] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present utility model, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] In view of this, the present utility model provides a clutch actuator, aiming to solve the problem of poor dust and water protection for automotive clutch actuators in the prior art. By using a more effective sealing structure and a breathable component, the dust and water protection effects of the clutch actuator are improved, better adapting to harsh working conditions, extending the product life, and enhancing driving safety.

[0006] According to one aspect of the present utility model, there is provided a clutch actuator, comprising:

[0007] A housing, one side of the housing forms an exhaust end;

[0008] An annular mounting plate, connected to the exhaust end, the annular mounting plate is provided with a central hole and a plurality of ventilation holes surrounding the central hole;

[0009] A piston, disposed at the exhaust end, the piston passes through the central hole; and

[0010] The breathable component is embedded with breathable holes. The breathable component includes a tubular body, a waterproof breathable membrane, a limiting ring column, and a first sealing ring. The first end of the tubular body is inserted into the breathable hole, and the second end is exposed outside the annular mounting plate and forms an annular inner retracted shoulder and an annular outer expanded shoulder. The first end of the limiting ring column is sleeved inside the tubular body and is supported by the bottom plate around the breathable hole. The second end of the limiting ring column sequentially abuts against the first sealing ring and the first side of the waterproof breathable membrane, and the second side of the waterproof breathable membrane is hermetically abutted against the inner side of the annular inner retracted shoulder. At least a part of the waterproof breathable membrane is exposed at the second end of the tubular body, and external air enters and exits the inner cavity of the housing only through the exposed part of the waterproof breathable membrane.

[0011] Preferably, an annular sealing groove with a third sealing ring is provided at the annular edge of the exhaust end of the housing, and the annular mounting plate and the annular sealing groove are aligned to form an annular sealing structure.

[0012] Preferably, it further includes: a sealing plate, which fits against the side of the annular mounting plate facing away from the inner cavity. The sealing plate is provided with a central hole for the piston to pass through and several breathable holes for the breathable components to pass through around the central hole; an annular flange is provided at the edge of the sealing plate, the protruding surface of the annular flange abuts against the exhaust end of the housing, and the inner circumference of the annular flange is buckled with the edge of the annular mounting plate to press the annular mounting plate tightly against the exhaust end.

[0013] Preferably, the annular outer expanded shoulder is press-fitted against the side of the sealing plate facing away from the inner cavity.

[0014] Preferably, the breathable component further includes: a second sealing ring, which is arranged between the lower surface of the annular outer expanded shoulder and the breathable hole of the sealing plate.

[0015] Preferably, the inner diameter of the annular inner retracted shoulder, the inner diameter of the first sealing ring, and the inner diameter of the limiting ring column are equal.

[0016] Preferably, the waterproof breathable membrane is circular, the diameter of the waterproof breathable membrane, the outer diameter of the tubular body, and the outer diameter of the limiting ring column are equal, and the diameter of the waterproof breathable membrane is greater than or equal to 120% of the diameter of the first sealing ring.

[0017] Preferably, it further includes: a dust cover, which surrounds the outer circumference of the piston protruding from the annular mounting plate, and performs annular sealing between the dust cover and the central hole of the sealing plate.

[0018] Preferably, it further includes: a radial oil seal, which is arranged between the piston and the outer end of the central hole of the annular mounting plate; and

[0019] a bushing, which is arranged between the piston and the inner end of the central hole of the annular mounting plate.

[0020] According to another aspect of the present invention, a vehicle is provided, which adopts the above-mentioned clutch actuator.

[0021] The clutch actuator of the present utility model can improve the dust and water protection effects of the clutch actuator through the use of a more effective sealing structure and a breathable component, better adapt to harsh working conditions, extend the product life, and enhance driving safety.

[0022] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments in accordance with the present utility model, and are used together with the specification to explain the principles of the present utility model. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram of the clutch actuator of the present utility model.

[0025] Figure 2 is Figure 1 an enlarged view of area A in

[0026] Figure 3 It is a schematic diagram of the exhaust end of the clutch actuator of the present utility model.

[0027] REFERENCE NUMERALS

[0028] 1 Bushing

[0029] 2 Radial oil seal

[0030] 3 Piston

[0031] 4 Dust cover

[0032] 5 Breathable component

[0033] 51 Waterproof and breathable membrane

[0034] 52 Limiting ring column

[0035] 53 First sealing ring

[0036] 54 Annular outward expanding shoulder

[0037] 55 Second sealing ring

[0038] 56 Annular inward contracting shoulder

[0039] 6 Annular mounting plate

[0040] 7 Third sealing ring

[0041] 8 Housing

[0042] 9 Sealing Plate Detailed Implementation Manner

[0043] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this utility model will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote the same or similar structures, and thus their repetitive description will be omitted.

[0044] The terms "first", "second", and similar terms used in the detailed description do not denote any order, quantity, or importance, but are merely used to distinguish different components. The orientation or positional relationship indicated by terms such as "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, which is only for convenience of description and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of this utility model. In addition, in the description of this utility model, when it is said that a certain device is "connected" to another device, this includes not only the case of direct connection, but also the case of indirect connection through other elements.

[0045] It should be noted that, without conflict, the features in the embodiments of this utility model and those in different embodiments can be combined with each other.

[0046] Figure 1 It is a schematic structural diagram of the clutch actuator of this utility model. Figure 2 Is Figure 1 An enlarged view of area A in Figure 3 It is a schematic diagram of the exhaust end of the clutch actuator of this utility model. As Figures 1 to 3As shown in the figure, the clutch actuator of the present utility model includes: a housing 8, an annular mounting plate 6, a piston 3, and four air permeable components 5. Among them, one side of the housing 8 forms an exhaust end. The annular mounting plate 6 is connected to the exhaust end, and the annular mounting plate 6 is provided with a central hole and a plurality of air permeable holes surrounding the central hole. The piston 3 is disposed at the exhaust end, and the piston 3 passes through the central hole. The air permeable components 5 are embedded in the air permeable holes, and only allow air to enter and exit the inner cavity of the housing 8. The four air permeable components 5 are arranged in a circumferential pattern centered on the piston 3. The air permeable component 5 includes a tubular body, a waterproof and breathable membrane 51, a limiting ring column 52, and a first sealing ring 53. The first end of the tubular body is inserted into the air permeable hole, and the second end is exposed outside the annular mounting plate 6 and forms an annular inner constricted shoulder 56 and an annular outer expanded shoulder 54. The first end of the limiting ring column 52 is sleeved inside the tubular body and is supported by the bottom plate around the air permeable hole. The second end of the limiting ring column 52 abuts against the first sealing ring 53 and the first side of the waterproof and breathable membrane 51 in sequence, and seals the second side of the waterproof and breathable membrane 51 against the inner side of the annular inner constricted shoulder 56. At least a part of the waterproof and breathable membrane 51 is exposed at the second end of the tubular body, and external air enters and exits the inner cavity of the housing 8 only through the exposed part of the waterproof and breathable membrane 51. The present invention can discharge the internal air only through the waterproof and breathable membranes 51 of the four air permeable components 5 based on the push inside the cavity, and timely inhale external air during the movement of the piston 3 based on the clutch actuator, so as to achieve the balance of the internal air pressure and the external environmental air pressure in the cavity. In a preferred embodiment, a circular sealing groove with a third sealing ring 7 is provided at the circular edge of the exhaust end of the housing 8, and the annular mounting plate 6 and the circular sealing groove are aligned to form a circular sealing structure, but not limited thereto.

[0047] In a preferred embodiment, it further includes: a sealing plate 9, which fits against the side of the annular mounting plate 6 facing away from the inner cavity. The sealing plate 9 is provided with a central hole for the piston 3 to pass through and a plurality of air permeable holes for the air permeable components 5 to pass through surrounding the central hole. The edge of the sealing plate 9 is provided with an annular flange. The protruding surface of the annular flange abuts against the exhaust end of the housing 8, and the inner circumference of the annular flange is buckled with the edge of the annular mounting plate 6 to press the annular mounting plate 6 tightly against the exhaust end, but not limited thereto.

[0048] In a preferred embodiment, the annular outer expanded shoulder 54 is press-fitted against the side of the sealing plate 9 facing away from the inner cavity, but not limited thereto.

[0049] In a preferred embodiment, the air permeable component 5 further includes: a second sealing ring 55, which is disposed between the lower surface of the annular outer expanded shoulder 54 and the air permeable hole of the sealing plate 9, but not limited thereto.

[0050] In a preferred embodiment, the inner diameter of the annular inner constricted shoulder 56, the inner diameter of the first sealing ring 53, and the inner diameter of the limiting ring column 52 are equal, but not limited thereto.

[0051] In a preferred embodiment, the waterproof and breathable membrane 51 is circular, and the diameter of the waterproof and breathable membrane 51, the outer diameter of the tubular body, and the outer diameter of the limiting ring column 52 are equal. The diameter of the waterproof and breathable membrane 51 is greater than or equal to 120% of the diameter of the first sealing ring 53, but not limited thereto.

[0052] In a preferred embodiment, it further includes: a dust cover 4, which surrounds the outer periphery of the piston 3 protruding from the annular mounting plate 6 and performs annular sealing between the dust cover 4 and the central hole of the sealing plate 9, but not limited thereto.

[0053] In a preferred embodiment, it further includes: a radial oil seal 2, which is arranged between the outer end of the central hole of the piston 3 and the annular mounting plate 6, but not limited thereto.

[0054] In a preferred embodiment, it further includes: a bushing 1, which is arranged between the inner end of the central hole of the piston 3 and the annular mounting plate 6, but not limited thereto.

[0055] Continue to refer to Figures 1 to 3 As shown, the clutch actuator of the present utility model includes: a bushing 1, a radial oil seal 2, a piston 3, a dust cover 4, a breathable component 5, an annular mounting plate 6, a third sealing ring 7, a housing 8, and a sealing plate 9. Among them, the two positions that most need to be sealed are the annular area around the piston 3 and the annular area where the housing is butted against the annular mounting plate 6. Among them, one side of the housing 8 forms an exhaust end. The annular mounting plate 6 is connected to the exhaust end. The annular mounting plate 6 is provided with a central hole and a plurality of ventilation holes surrounding the central hole. The piston 3 is arranged at the exhaust end, and the piston 3 passes through the central hole. The breathable component 5 is embedded in the ventilation holes and only allows air to enter and exit the inner cavity of the housing 8. The annular edge of the exhaust end of the housing 8 is provided with an annular sealing groove having a third sealing ring 7, and the annular mounting plate 6 is aligned with the annular sealing groove to form an annular sealing structure. The rectangular sealing plate 9 fits against the side of the annular mounting plate 6 facing away from the inner cavity. The sealing plate 9 is provided with a central hole for the piston 3 to pass through and a plurality of ventilation holes surrounding the central hole for the breathable component 5 to pass through. The edge of the sealing plate 9 is provided with an annular flange. The protruding surface of the annular flange abuts against the exhaust end of the housing 8, and the inner circumference of the annular flange is buckled with the edge of the annular mounting plate 6 to press the annular mounting plate 6 against the exhaust end, thereby ensuring the seal between the annular mounting plate 6 and the housing 8. The dust cover 4 surrounds the outer periphery of the piston 3 protruding from the annular mounting plate 6 and performs annular sealing between the dust cover 4 and the central hole of the sealing plate 9. The radial oil seal 2 is arranged between the outer end of the central hole of the piston 3 and the annular mounting plate 6, and the bushing 1 is arranged between the inner end of the central hole of the piston 3 and the annular mounting plate 6. The dust cover 4 and the radial oil seal 2 form a combined sealing mode, thereby strengthening the sealing effect of the annular area around the piston 3.

[0056] The breathable component 5 in the present utility model includes a tubular body, a waterproof breathable membrane 51, a limiting ring column 52, a first sealing ring 53, and a second sealing ring 55. The first end of the tubular body is inserted into the breathable hole, and the second end is exposed outside the annular mounting plate 6 and forms an annular inner constricted shoulder 56 and an annular outer expanded shoulder 54. The first end of the limiting ring column 52 is sleeved inside the tubular body and is supported by the bottom plate around the breathable hole. The second end of the limiting ring column 52 abuts against the first sealing ring 53 and the first side of the waterproof breathable membrane 51 in sequence, and the second side of the waterproof breathable membrane 51 is hermetically abutted against the inner side of the annular inner constricted shoulder 56, and at least part of the waterproof breathable membrane 51 is exposed outside the second end of the tubular body. The annular outer expanded shoulder 54 is crimped against the side of the sealing plate 9 facing away from the inner cavity. The second sealing ring 55 is arranged between the lower surface of the annular outer expanded shoulder 54 and the breathable hole of the sealing plate 9. The inner diameters of the annular inner constricted shoulder 56, the first sealing ring 53, and the limiting ring column 52 are equal. The waterproof breathable membrane 51 is circular, and the diameter of the waterproof breathable membrane 51, the outer diameter of the tubular body, and the outer diameter of the limiting ring column 52 are equal. The diameter of the waterproof breathable membrane 51 is greater than or equal to 120% of the diameter of the first sealing ring 53. The waterproof breathable membrane 51 in the present utility model can effectively prevent water vapor and dust from passing through. External air only enters and exits the inner cavity of the housing 8 through the exposed part of the waterproof breathable membrane 51, so as to ensure that the clutch actuator can achieve the three-proof effect of IP68. After long-term use, it can also prevent dust or water vapor from entering the inner cavity of the clutch actuator, so as to better adapt to harsh working conditions, extend the product life, and improve driving safety.

[0057] The present utility model also provides an automobile, which is characterized in that it adopts the clutch actuator as described above. Its structural features and technical effects are as described above and will not be elaborated here.

[0058] The clutch actuator of the present utility model can improve the dust-proof and waterproof effects of the clutch actuator through a more effective sealing structure and the use of a breathable component, better adapt to harsh working conditions, extend the product life, and improve driving safety.

[0059] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or replacements can still be made, which should all be regarded as belonging to the protection scope of the present utility model.

Claims

1. A clutch actuator, characterized in that: include: A housing (8), one side of the housing (8) forming an exhaust end; An annular mounting plate (6) connected to the exhaust end, the annular mounting plate (6) being provided with a central hole and a plurality of air holes surrounding the central hole; A piston (3) is disposed at the exhaust end, and the piston (3) passes through the central hole; as well as A vent assembly (5) is embedded in the vent hole. The vent assembly (5) comprises a tubular body, a waterproof vent membrane (51), a limiting ring column (52) and a first sealing ring (53). The first end of the tubular body is inserted into the vent hole, and the second end is exposed to the annular mounting plate (6) to form an annular inwardly contracted shoulder (56) and an annular outwardly expanded shoulder (54). The first end of the limiting ring column (52) is sleeved in the tubular body and supported by the bottom plate around the vent hole. The second end of the limiting ring column (52) abuts against the first sealing ring (53) and the first side of the waterproof vent membrane (51) in turn, and the second side of the waterproof vent membrane (51) is sealed against the inner side of the annular inwardly contracted shoulder (56). At least a portion of the waterproof vent membrane (51) is exposed to the second end of the tubular body, and external air enters and exits the inner cavity of the housing (8) only through the exposed portion of the waterproof vent membrane (51).

2. The clutch actuator according to claim 1, characterized in that: An annular sealing groove having a third sealing ring (7) is provided on the annular edge of the exhaust end of the housing (8), and the annular mounting plate (6) is matched with the annular sealing groove to form an annular sealing structure.

3. The clutch actuator according to claim 2, characterized in that: Also includes: A sealing plate (9) is fitted on the side of the annular mounting plate (6) facing away from the inner cavity, and the sealing plate (9) is provided with a central hole for the piston (3) to pass through and a plurality of ventilation holes surrounding the central hole for the ventilation component (5) to pass through; an annular flange is provided on the edge of the sealing plate (9), the protruding surface of the annular flange abuts against the exhaust end of the outer shell (8), and the inner periphery of the annular flange is buckled with the edge of the annular mounting plate (6), so as to press the annular mounting plate (6) toward the exhaust end.

4. The clutch actuator according to claim 3, characterized in that: The annular outwardly expanded shoulder (54) is crimped onto a side of the sealing plate (9) facing away from the inner cavity.

5. The clutch actuator according to claim 4, characterized in that: The ventilation component (5) further comprises: a second sealing ring (55) arranged between the lower surface of the annular outwardly expanded shoulder (54) and the ventilation hole of the sealing plate (9).

6. The clutch actuator according to claim 1, characterized in that: The inner diameter of the annular inner shoulder (56), the inner diameter of the first sealing ring (53), and the inner diameter of the limiting ring column (52) are equal.

7. The clutch actuator according to claim 1, characterized in that: The waterproof breathable membrane (51) is circular, the diameter of the waterproof breathable membrane (51), the outer diameter of the tubular body, and the outer diameter of the limiting ring column (52) are equal, and the diameter of the waterproof breathable membrane (51) is greater than or equal to 120% of the diameter of the first sealing ring (53).

8. The clutch actuator according to claim 3, characterized in that: Also includes: A dust cover (4) surrounds the piston (3) and protrudes from the outer circumference of the annular mounting plate (6), and performs an annular seal between the dust cover (4) and the central hole of the sealing plate (9).

9. The clutch actuator according to claim 8, characterized in that: Also includes: A radial oil seal (2) is arranged between the piston (3) and the outer end of the central hole of the annular mounting plate (6); as well as A bushing (1) is arranged between the piston (3) and the inner end of the central hole of the annular mounting plate (6).

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