Piston cup

Abstract

The utility model discloses a piston packing cup which comprises a connecting part, the connecting part is annular, the two end faces of the connecting part are the first end face and the second end face respectively, and the outer side face of the connecting part is provided with a first sealing lip and a second sealing lip. The first sealing lip and the second sealing lip are both of an annular structure and are both protrusions in the direction away from the axis of the connecting part, the first sealing lip is close to the first end face, the second sealing lip is close to the second end face, and a deformation interval is formed between the first sealing lip and the second sealing lip; the first sealing lip inclines towards the first end face of the connecting part, and the second sealing lip inclines towards the second end face of the connecting part. A plurality of annular bulges are arranged on the inner side surface of the connecting part; a plurality of sealing lips are additionally arranged, so that the good sealing effect is ensured, meanwhile, the braking effect can be easily achieved when a driver steps on the brake pedal, and the reliability of obtaining the braking intention of the driver is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic braking, in particular to a piston leather cup. Background Art

[0002] The braking system is an important guarantee for the safe driving of automobiles. Compared with the traditional hydraulic braking system, the electric control braking system has the advantages of simple structure, fast braking response, high control accuracy, flexible layout, etc. It is easy to integrate with the vehicle dynamic control system, which can meet the regenerative braking system requirements of electric vehicles and hybrid vehicles, and has good development prospects.

[0003] The electronic brake system changes the use of the leather cup, and the product structure must be improved to meet the sealing effect of the brake fluid to ensure that the driver can brake safely.

[0004] The traditional leather cup is in a static sealing working state in the master cylinder and can effectively seal in the sealed brake fluid. With the development of electronic braking, the traditional brake system has changed, and the working state of the static sealing leather cup on the master cylinder has changed accordingly, converting to a dynamic sealing state. Therefore, the simulator piston leather cup came into being. Utility Model Content

[0005] In order to solve the technical problems existing in the background technology, the utility model provides a piston leather cup.

[0006] The utility model provides a piston leather cup, comprising a connecting portion, the connecting portion is annular, the two end faces of the connecting portion are respectively a first end face and a second end face, and the outer side face of the connecting portion is provided with a first sealing lip and a second sealing lip;

[0007] The first sealing lip and the second sealing lip are both annular structures, the first sealing lip and the second sealing lip are both protrusions away from the axis of the connecting portion, the first sealing lip is close to the first end surface, the second sealing lip is close to the second end surface, and there is a deformation interval between the first sealing lip and the second sealing lip;

[0008] The first sealing lip is inclined toward a direction away from the axis at a first end surface of the connecting portion, and the second sealing lip is inclined toward a direction away from the axis at a second end surface of the connecting portion;

[0009] The inner side surface of the connecting portion is provided with a plurality of annular protrusions.

[0010] Preferably, a first deformation gap is formed between the first sealing lip and the outer side surface of the connecting portion, and a second deformation gap is formed between the second sealing lip and the outer side surface of the connecting portion.

[0011] Preferably, the deformation space of the first deformation gap is larger than the deformation space of the second deformation gap.

[0012] Preferably, the diameter of the first sealing lip is greater than the diameter of the second sealing lip.

[0013] Preferably, the inner side surface of the connecting portion is inclined, and the inner diameter length of the inner side surface of the connecting portion gradually increases in a direction from the first end surface to the second end surface.

[0014] Preferably, the side surface of the annular protrusion is an arc surface protruding toward the axis direction of the connecting portion.

[0015] Preferably, the annular protrusions are provided in three groups, and there are gaps between adjacent annular protrusions.

[0016] Preferably, the piston cup is integrally vulcanized and formed from rubber.

[0017] In the utility model, a piston leather cup is proposed. The piston leather cup of the utility model changes the structure of the product through the working mode of the product and the stability of the sealing effect. The traditional leather cup is in a static sealing working state in the master cylinder and can effectively seal in the sealed brake fluid. With the development of electronic braking, the traditional braking system has changed, and the working state of the static sealing leather cup on the master cylinder has changed accordingly, and is converted into a dynamic sealing state. In order to achieve a better sealing effect, the structure of the secondary bowl is changed accordingly, the internal structure is changed, and multiple sealing lips are added to ensure a good sealing effect. At the same time, it is necessary to ensure that the driver can easily achieve the braking effect when stepping on the brake pedal, and to ensure the reliability of obtaining the driver's braking intention.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model.

[0021] Figure 3 It is an assembly diagram in an embodiment of the present utility model.

[0022] Explanation of reference numerals in the figure: 1, connecting portion; 2, first sealing lip; 3, second sealing lip; 4, first deformation gap; 5, second deformation gap; 6, annular protrusion; 7, main cylinder; 8, piston; 9, mounting ring groove; 901, end face a; 902, annular side face; 903, end face b; DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] like Figure 1-Figure 2 A piston cup shown in the figure comprises a connecting portion 1, the connecting portion 1 is annular, the two end faces of the connecting portion 1 are respectively a first end face and a second end face, and the outer side face of the connecting portion 1 is provided with a first sealing lip 2 and a second sealing lip 3;

[0025] The first sealing lip 2 and the second sealing lip 3 are both annular structures, and the first sealing lip 2 and the second sealing lip 3 are both protrusions away from the axis direction of the connecting portion 1. The first sealing lip 2 is close to the first end surface, and the second sealing lip 3 is close to the second end surface. There is a deformation interval between the first sealing lip 2 and the second sealing lip 3;

[0026] The first sealing lip 2 is inclined toward the direction away from the axis at the first end surface of the connecting portion 1, and the second sealing lip 3 is inclined toward the direction away from the axis at the second end surface of the connecting portion 1;

[0027] The inner side surface of the connecting portion 1 is provided with a plurality of annular protrusions 6 .

[0028] Preferably, a first deformation gap 4 is formed between the first sealing lip 2 and the outer side surface of the connecting portion 1 , and a second deformation gap 5 is formed between the second sealing lip 3 and the outer side surface of the connecting portion 1 .

[0029] Preferably, the deformation space of the first deformation gap 4 is larger than the deformation space of the second deformation gap 5 .

[0030] Preferably, the diameter of the first sealing lip 2 is greater than the diameter of the second sealing lip 3 .

[0031] The outer ring is the sealing assembly surface, and two protruding parts are designed to increase the sealing effect of the product and reduce friction.

[0032] The inclined setting can ensure that the first lip and the second lip are always in close contact with the inner wall surface of the master cylinder 7 during the movement of the piston 8, thereby ensuring the sealing effect. The deformation interval between the first sealing lip 2 and the second sealing lip 3 can reduce the friction resistance during the dynamic sealing process.

[0033] Preferably, the inner side surface of the connecting portion 1 is inclined, and the inner diameter length of the inner side surface of the connecting portion 1 gradually increases in the direction from the first end surface to the second end surface.

[0034] Preferably, the side surface of the annular protrusion 6 is an arc surface protruding toward the axial direction of the connecting portion 1 .

[0035] Preferably, the annular protrusions 6 are provided in three groups, and there are gaps between adjacent annular protrusions 6 .

[0036] The inner end surface is designed to be inclined with a raised circular shape to ensure that friction is reduced when it moves with the cylinder body, and multiple sealing raised circular annular protrusions are added to achieve a sealing effect. The inclined design of the inner ring facilitates assembly during assembly, and the inner diameter gradually decreases. During the assembly process of this product, as the inner diameter gradually decreases, it will become tighter and tighter, and the sealing degree of each annular protrusion on the piston will gradually increase, thereby further enhancing the sealing effect.

[0037] Preferably, the piston cup is integrally vulcanized and formed from rubber.

[0038] like Figure 3 As shown:

[0039] A braking system includes a master cylinder 7 and a piston 8, wherein the piston 8 is movably installed in the master cylinder 7, and a leather cup is provided between the piston 8 and the master cylinder 7. The invention is characterized in that the leather cup is the aforementioned new simulator piston 8 leather cup, and an outer side wall of the piston 8 is provided with a mounting ring groove 9, and the leather cup of the new simulator piston 8 is arranged in the mounting ring groove 9.

[0040] The mounting ring groove 9 includes an end face a901, an end face b903 and an annular side face 902, the annular outer side face connects the end face a901 and the end face b903, the first end face of the connecting part 1 is fixed on the end face a901, and the second end face is fixed on the end face b903, the inner side face of the connecting part 1 is fixed on the annular side face 902, and the first sealing lip 2 and the second sealing lip 3 on the connecting part 1 are in contact with the inner wall of the master cylinder 7.

[0041] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A piston cup, characterized in that: The invention comprises a connecting part (1), wherein the connecting part (1) is annular, the two end faces of the connecting part (1) are respectively a first end face and a second end face, and the outer side face of the connecting part (1) is provided with a first sealing lip (2) and a second sealing lip (3); The first sealing lip (2) and the second sealing lip (3) are both annular structures and are protrusions away from the axis of the connecting portion (1); the first sealing lip (2) is close to the first end surface, and the second sealing lip (3) is close to the second end surface; there is a deformation interval between the first sealing lip (2) and the second sealing lip (3); The first sealing lip (2) is inclined toward a direction away from the axis at a first end surface of the connecting portion (1), and the second sealing lip (3) is inclined toward a direction away from the axis at a second end surface of the connecting portion (1); The inner side surface of the connecting portion (1) is provided with a plurality of annular protrusions (6).

2. A piston cup according to claim 1, characterized in that: A first deformation gap (4) is formed between the first sealing lip (2) and the outer side surface of the connecting portion (1), and a second deformation gap (5) is formed between the second sealing lip (3) and the outer side surface of the connecting portion (1).

3. A piston cup according to claim 2, characterized in that: The deformation space of the first deformation gap (4) is greater than the deformation space of the second deformation gap (5).

4. A piston cup according to claim 1, characterized in that: The diameter of the first sealing lip (2) is greater than the diameter of the second sealing lip (3).

5. The piston cup according to claim 1, characterized in that: The inner side surface of the connecting portion (1) is arranged at an inclination, and the inner diameter length of the inner side surface of the connecting portion (1) gradually increases in the direction from the first end surface to the second end surface.

6. The piston cup according to claim 1, characterized in that: The side surface of the annular protrusion (6) is an arc surface that protrudes toward the axial direction of the connecting portion (1).

7. The piston cup according to claim 1, characterized in that: The annular protrusions (6) are provided in three groups, and there are gaps between adjacent annular protrusions (6).

8. The piston cup according to claim 1, characterized in that: The piston leather cup is integrally vulcanized and formed of rubber.

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