Electronic parking brake shell and electronic parking brake device

Abstract

The utility model belongs to the technical field of electronic parking, and discloses an electronic parking brake shell and an electronic parking brake device. The electronic parking brake housing includes a top cover and a housing. The top cover comprises a main body part and an edge locking part, the edge locking part is connected to the main body part in a surrounding mode and comprises a first part and a second part, the first part and the main body part are arranged in a spaced mode, and the second part is connected between the main body part and the first part. The shell is connected to the top cover in a sealed mode and comprises a shell body and a protruding part, the edge of the shell body extends into the position between the first part and the main body part, and the protruding part is arranged on the face, facing the second part, of the shell body and abuts against the second part. When the electronic parking brake shell is assembled, a tool is used for pressing the top cover and the shell body, so that the protruding part abuts against the second part, the contact area between the shell body and the top cover is reduced, the bending deformation capacity after the contact surface is pressed is improved, and therefore it is guaranteed that the portion between the shell body and the top cover can be filled with the protruding part, and the sealing effect of the shell body on the top cover is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic parking technology field especially relates to a kind of electronic parking brake shell and electronic parking brake device. BACKGROUND

[0002] With the continuous development and progress of electromechanical technology, the parking brake system of car is gradually replaced by electronic parking brake from traditional mechanical parking brake. In the use of electronic parking brake device, the sealing of electronic parking brake shell needs to be guaranteed to prevent external water and gas from entering the inside of parking actuator during working process, which affects the parking performance of electronic parking brake device, and even causes motor short-circuit failure.

[0003] In prior art, when assembling the shell of electronic parking brake device, welding tool is needed to press the shell before welding, and when welding tool presses the top cover and the shell, the shell and the top cover are in surface-to-surface abutment. Due to uneven distribution of pressing force and deformation of contact surface, the contact surface between the shell and the top cover is not completely contacted, which causes gap between the top cover and the shell, and affects the sealing of the shell.

[0004] Therefore, an electronic parking brake shell and electronic parking brake device are needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] One purpose of the utility model is to provide an electronic parking brake shell, which can improve the abutment effect of shell and top cover and ensure the sealing between the shell and the top cover.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An electronic parking brake shell is provided, which comprises:

[0008] A top cover comprises a main body and a locking edge, the locking edge is connected to the main body, the locking edge comprises a first part and a second part, the first part is spaced apart from the main body, and the second part is connected between the main body and the first part.

[0009] A shell is sealingly connected to the top cover, and the shell comprises a shell main body and a protruding part. The edge of the shell main body extends between the first part and the main body, and the protruding part is arranged on one side of the shell main body facing the second part. The protruding part abuts against the second part.

[0010] As an optional solution of the electronic parking brake shell, the protruding part is provided with multiple protruding parts, and multiple protruding parts are circumferentially spaced apart on the main body.

[0011] As an alternative to the electronic parking brake housing, the protruding portion is an annular protrusion disposed around the main body portion.

[0012] As an alternative to the electronic parking brake housing, the protruding portion is an annular protrusion disposed around the main body portion.

[0013] As an alternative to the electronic parking brake housing, the protruding portion is an annular protrusion disposed around the main body portion.

[0014] As an alternative to the electronic parking brake housing, the protruding portion is an annular protrusion disposed around the main body portion.

[0015] Another object of the present application is to provide an electronic parking brake device with simple structure, easy processing and good sealing performance.

[0016] To achieve the above object, the present application adopts the following technical scheme.

[0017] An electronic parking brake device comprises a braking system and the electronic parking brake housing as described above, and the braking system is arranged in the housing.

[0018] As an alternative to the electronic parking brake device, the braking system comprises a driving member, a transmission mechanism and a braking member, and the driving member, the transmission mechanism and the braking member are sequentially connected in power.

[0019] As an alternative to the electronic parking brake device, the transmission mechanism is a gear transmission mechanism.

[0020] As an alternative to the electronic parking brake device, the driving member is an electric motor.

[0021] The present application has the following advantages:

[0022] The present application provides an electronic parking brake housing, the shell main body can be inserted between the first part of the top cover and the main body portion, a protruding portion is arranged on the side of the shell main body facing the second part, when assembling the electronic parking brake housing, the top cover and the housing are pressed by a tool, the protruding portion abuts against the top cover, the contact area between the housing and the top cover is reduced, the bending deformation ability of the contact surface after being pressed is improved, so that the protruding portion can be filled between the shell main body and the top cover after being pressed, the sealing connection of the housing to the top cover is realized, the structure is simple, easy to process, and conducive to reducing the production cost.

[0023] The present application also provides an electronic parking brake device, which comprises a braking system and the electronic parking brake housing as described above, and the braking system is arranged in the electronic parking brake housing, the housing structure has good sealing performance, can prevent the housing structure from leaking air, and ensure the use performance and safety of the braking system. Attached Figure Description

[0024] Fig. 1 This is a partial schematic diagram of the electronic parking brake housing provided by this utility model;

[0025] Fig. 2 This is a schematic diagram of the electronic parking brake device provided by this utility model.

[0026] In the picture:

[0027] 100. Top cover; 110. Main body; 120. Seam edge; 121. First part; 122. Second part; 130. Rotating shaft;

[0028] 200, shell; 210, shell body; 220, protrusion; 230, first receiving cavity; 240, second receiving cavity;

[0029] 300. Transmission mechanism. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] As shown in Figs. 1-2 The electronic parking brake shell of the present embodiment includes a top cover 100 and a shell body 200. The top cover 100 includes a main body part 110 and a locking edge part 120, the locking edge part 120 is connected to the main body part 110, the locking edge part 120 includes a first part 121 and a second part 122, the first part 121 is spaced apart from the main body part 110, and the second part 122 is connected between the main body part 110 and the first part 121. The shell body 200 is sealingly connected to the top cover 100, the shell body 200 includes a shell main body 210 and a protruding part 220, the edge of the shell main body 210 extends between the first part 121 and the main body part 110, the protruding part 220 is arranged on the side of the shell main body 210 facing the second part 122, and the protruding part 220 abuts against the second part 122.

[0035] Based on the above design, the shell main body 210 can extend between the first part 121 and the main body part 110 of the top cover 100, the protruding part 220 is arranged on the side of the shell main body 210 facing the second part 122, and when assembling the electronic parking brake shell, the top cover 100 and the shell body 200 are pressed by a tool, so that the protruding part 220 abuts against the second part 122. The arrangement can reduce the contact area between the shell body 200 and the top cover 100, improve the bending deformation ability of the contact surface after being pressed, thereby ensuring that the protruding part 220 can be filled between the shell main body 210 and the top cover 100 after being pressed, realizing the sealing connection of the shell body 200 to the top cover 100, and the structure is simple, easy to process, and applicable to the sealing assembly of electronic parking brake devices of various specifications and shapes, which is beneficial to reducing production cost.

[0036] Optionally, a plurality of protruding parts 220 can be arranged, and the plurality of protruding parts 220 are arranged circumferentially spaced apart from the main body part 110. The arrangement can increase the number of contact points between the shell body 200 and the top cover 100, thereby improving the sealing between the shell body 200 and the top cover 100.

[0037] Optionally, the protruding part 220 can also be an annular protrusion arranged around the main body part 110. The arrangement can further eliminate the gap between the protruding part 220 and the second part 122, and ensure the sealing effect between the shell body 200 and the top cover 100.

[0038] In some embodiments, the cross-sectional shape of the protrusion 220 can be triangular, one vertex of the triangle is arranged towards the second part 122 and abuts the second part 122, that is, the top of the protrusion 220 is a ridge structure, so that the contact between the protrusion 220 and the second part 122 is changed from surface-to-surface contact to surface-to-line contact, further reducing the contact area between the protrusion 220 and the second part 122, and improving the plastic deformation ability of the protrusion 220. When the tool presses the top cover 100 and the shell 200, the protrusion 220 can deform flexibly and fill between the top cover 100 and the shell body 210, which is beneficial to improve the sealing effect. In some other embodiments, the cross-sectional shape of the protrusion 220 can also be semicircular, rectangular, trapezoidal, etc.

[0039] It should be noted that the top cover 100 and the shell 200 are usually connected by welding. For example, ultrasonic welding or laser welding can be selected. Ultrasonic welding uses high-frequency vibration of a certain amplitude to transmit ultrasonic energy to the welding area, which can generate local high temperature, causing the contact surface of the top cover 100 and the shell 200 to melt rapidly, and after a certain pressure is applied, the top cover 100 and the shell 200 are fused together. Ultrasonic welding has the characteristics of fast welding speed, high welding strength, good sealing performance, etc. Laser welding uses the heat generated by the laser beam to melt the surface of the top cover 100 and the shell 200, and then bonds the top cover 100 and the shell 200 together. Laser welding has the advantages of precise and firm welding, which can reduce the vibration stress and thermal stress of the product.

[0040] Further, the protrusion 220 is a hot melt material part, which can be melted by heat when welding the top cover 100 and the shell 200, and then flows and fills between the shell body 210 and the second part 122, and solidifies after cooling, thereby achieving sealing. Alternatively, the top cover 100 and the shell 200 are both plastic parts, which have good elastic deformation ability and hot melting property, which is beneficial to ensure the sealing performance.

[0041] The embodiment also provides an electronic parking brake device, which comprises a brake system and the electronic parking brake shell described above. The brake system is arranged in the shell 200, and the shell structure has good sealing performance, which can prevent air leakage of the shell structure and ensure the use performance and safety of the brake system.

[0042] In the embodiment, the brake system comprises a driving member, a transmission mechanism 300 and a brake member, which are sequentially connected in power. The driving member is arranged as an electric motor, and the transmission mechanism 300 is arranged as a gear transmission mechanism. When parking is needed, the electric motor is started by a switch, and the electric motor drives the brake member to abut against the automobile brake disc through the gear transmission mechanism, thereby reducing the vehicle speed to achieve parking.

[0043] Specifically, the housing 200 is provided with a first accommodating cavity 230 for accommodating a driving member and a second accommodating cavity 240 for accommodating a transmission mechanism 300, and the top cover 100 further comprises a rotating shaft 130 connected to the main body 110 and extending into the second accommodating cavity 240, one gear in the gear transmission mechanism being capable of rotating around the rotating shaft 130, so that the electronic parking brake device is compact in structure, saves installation space and production cost.

[0044] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not required to be exhausted. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.

Claims

1. An electronic parking brake housing characterized by, The application relates to an electronic parking brake shell. The application relates to an electronic parking brake shell. The application relates to an electronic parking brake shell. The application relates to an electronic parking brake shell.

2. The electronic parking brake housing of claim 1, wherein, The application relates to an electronic parking brake shell.

3. The electronic parking brake housing of claim 1, wherein, The application relates to an electronic parking brake shell.

4. The electronic parking brake housing of claim 1, wherein, The application relates to an electronic parking brake shell.

5. The electronic parking brake housing of claim 1, wherein, The application relates to an electronic parking brake shell.

6. The electronic parking brake housing of claim 1, wherein, The application relates to an electronic parking brake shell.

7. An electric parking brake device characterized by comprising: The application relates to an electronic parking brake shell.

8. An electronic parking brake device according to claim 7, characterized in that The application relates to an electronic parking brake shell.

9. An electronic parking brake device according to claim 8, characterized in that The application relates to an electronic parking brake shell.

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