A connecting structure of a pump cover and a car washing pump

Abstract

The utility model provides a kind of connecting structure of pump cover and car washing pump, belong to the technical field of automobile parts.It solves the problem of insufficient connection strength and sealing of pump cover and pump base in prior art.The utility model includes washing pump cover and washing pump base, outer connecting ring and inner connecting ring are formed below washing pump cover, connecting groove is formed between outer connecting ring and inner connecting ring, double-layer stepped sealing ring is fixed in connecting groove, double-layer stepped sealing ring includes elastic sealing layer and rigid support layer, elastic sealing layer completely covers the end surface of connecting groove and forms flange sealing structure by extending outward, fastening buckle slot is set on outer connecting ring, slope guide groove is set below fastening buckle slot, anti-retreating projection is set on the inner wall of slope guide groove.The utility model has the advantages of high connection strength and good sealing performance.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology and relates to a connection structure between a pump cover and an automotive wash pump. Background Technology

[0002] A car washer pump is a device used to clean the windshield of a car. It works by switching the lever on and off, which connects the windshield washer motor, causing washer fluid to be sprayed from the nozzles through the washer hoses. Simultaneously, the wipers rotate, thus cleaning the windshield.

[0003] Chinese patent publication number CN206636795U discloses a split-type electric washer pump for automotive windshields, including a pump base and an upper cover. A motor is installed inside the pump base. A lower cover is installed on the pump base and outside the motor shaft. An impeller is installed on the motor shaft and between the pump base and the lower cover. The lower cover has an inlet and an outlet. An outer oil seal assembly and an inner oil seal assembly are installed on the motor shaft and inside the pump base.

[0004] In the automotive windshield washer pump provided by this patent, the pump base and the top cover are embedded. When disassembling this connection structure, it is difficult to disassemble because the connection structure inside the end cover and the housing is fixed. Moreover, when disassembling many times, the connection structure inside the end cover and the housing is easily worn, resulting in a decrease in connection strength. Furthermore, the firmness and sealing of the embedded connection pump cover and the pump base cannot be guaranteed. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a connection structure between a pump cover and a car wash pump.

[0006] The objective of this utility model can be achieved through the following technical solution: A connection structure between a pump cover and a car wash pump, including a wash pump cover and a wash pump base, wherein an outer connecting ring and an inner connecting ring are formed below the wash pump cover, and a connecting groove is formed between the outer connecting ring and the inner connecting ring, wherein a double-layer stepped sealing ring is fixed in the connecting groove, the double-layer stepped sealing ring including an elastic sealing layer and a rigid support layer, the elastic sealing layer completely covers the end surface of the connecting groove and extends outward to form a flanged sealing structure, a fastening buckle slot is provided on the outer connecting ring, and a sloping guide groove is provided below each fastening buckle slot, and an anti-retraction protrusion is provided on the inner wall of the sloping guide groove.

[0007] In the above-mentioned connection structure between a pump cover and a car wash pump, a connecting platform is formed above the pump seat of the wash pump, a connecting protrusion and a connecting surface are formed above the connecting platform, and a positioning buckle connector is formed on the connecting protrusion.

[0008] In the above-mentioned connection structure between the pump cover and the car wash pump, the connecting platform of the wash pump base is provided with an elastic latch that cooperates with the anti-retraction protrusion.

[0009] In the above-mentioned connection structure between the pump cover and the car wash pump, a micro motor is fixedly installed inside the pump base of the wash pump, and a terminal is fixed on the micro motor, with a connection hole provided on the terminal.

[0010] In the above-mentioned connection structure between a pump cover and a car wash pump, the bottom of the wash pump cover is integrally formed with connecting teeth and several connecting posts.

[0011] In the above-mentioned connection structure between the pump cover and the car wash pump, the inclination angle of the inclined guide groove is 45°±2°.

[0012] Compared with the prior art, the connection structure between the pump cover and the car wash pump provided by this utility model has the following advantages: 1. Through the structure of the double-layer stepped sealing ring, dynamic sealing is provided to compensate for the gap changes caused by assembly errors and vibration, and to prevent the sealing ring from being over-compressed and deformed, thus maintaining long-term sealing stability. The outwardly extending flange sealing structure forms a bidirectional seal in both the axial and radial directions. 2. Through the structural design of the inclined guide groove and the fastening buckle groove, the positioning buckle joint is guided to automatically correct its position, reducing manual assembly errors. The elastic tongue slides along the inclined surface and connects with the anti-retraction protrusion to form a mechanical and elastic double locking. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the assembly structure of this utility model; Figure 2 This is a schematic diagram of a double-layer stepped sealing ring structure; Figure 3 This is a schematic diagram of the washing pump base structure; Figure 4 This is a schematic diagram of the structure of the washing pump cover.

[0014] In the diagram: 1. Washing pump cover; 11. Outer connecting ring; 12. Inner connecting ring; 13. Connecting groove; 14. Fastening buckle slot; 15. Angled guide groove; 16. Anti-retraction protrusion; 17. Connecting tooth; 18. Connecting column; 2. Washing pump base; 21. Connecting platform; 22. Connecting protrusion; 221. Positioning buckle connector; 23. Connecting platform surface; 24. Elastic latch; 25. Micro motor; 26. Terminal; 261. Connecting hole; 3. Double-layer stepped sealing ring; 31. Elastic sealing layer; 32. Rigid support layer; 33. Flanged sealing structure. Detailed Implementation

[0015] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0016] like Figures 1 to 4 As shown, this embodiment includes a washing pump cover 1 and a washing pump base 2. A connecting platform 21 is formed on the top of the washing pump base 2, and a connecting protrusion 22 is formed on the top of the connecting platform 21. The bottom surface of the connecting platform 21 is a connecting surface 23. A positioning buckle connector 221 is formed on the connecting protrusion 22. An outer connecting ring 11 and an inner connecting ring 12 are formed below the washing pump cover 1. A connecting groove 13 is formed between the outer connecting ring 11 and the inner connecting ring 12. A double-layer stepped sealing ring 3 is fixed in the connecting groove 13. The double-layer stepped sealing ring 3 includes an upper elastic sealing layer 31 and a lower rigid support layer 32. The upper elastic sealing layer 31 completely covers the connecting groove 13. The end surface extends outward to form a flanged sealing structure 33, which ensures axial and radial bidirectional sealing. The lower rigid support layer 32 is fitted and fixed to the top of the connecting platform 21. Several fastening buckle slots 14 are provided on the outer connecting ring 11. Each fastening buckle slot 14 has an inclined guide groove 15 with an inclined angle below it. The inner wall of the inclined guide groove 15 is provided with an anti-retraction protrusion 16. The connecting platform 21 of the washing pump seat 2 is provided with an elastic latch 24 that cooperates with the anti-retraction protrusion 16. When the positioning buckle connector 221 is inserted into the fastening buckle slot 14, the elastic latch 24 slides along the inclined guide groove 15 and forms a bidirectional lock with the anti-retraction protrusion 16.

[0017] To elaborate further, such as Figures 1 to 4 As shown, a micro motor 25 is fixedly installed inside the washing pump base 2. A terminal 26 is fixed on the micro motor 25. A connection hole 261 is opened on the terminal 26. A connecting tooth 17 and several connecting posts 18 are integrally formed below the washing pump cover 1. The connecting posts 18 are located on one side of the connecting tooth 17. The connecting tooth 17 and the connecting posts 18 are used to fix the terminal 26.

[0018] To elaborate further, the inclined angle of the inclined guide groove 15 is 45°±2°, which ensures that the washing pump cover 1 and the washing pump base 2 are automatically corrected and positioned during assembly.

[0019] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0020] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A connection structure between a pump cover and a car wash pump, comprising a wash pump cover (1) and a wash pump base (2), characterized in that: An outer connecting ring (11) and an inner connecting ring (12) are formed below the pump cover (1) of the washing pump. A connecting groove (13) is formed between the outer connecting ring (11) and the inner connecting ring (12). A double-layer stepped sealing ring (3) is fixed in the connecting groove (13). The double-layer stepped sealing ring (3) includes an elastic sealing layer (31) and a rigid support layer (32). The elastic sealing layer (31) completely covers the end surface of the connecting groove (13) and extends outward to form a flanged sealing structure (33). A fastening buckle slot (14) is provided on the outer connecting ring (11). A sloping guide groove (15) is provided below the fastening buckle slot (14). An anti-retraction protrusion (16) is provided on the inner wall of the sloping guide groove (15).

2. The connection structure between the pump cover and the car wash pump according to claim 1, characterized in that: A connecting platform (21) is formed above the washing pump base (2), a connecting protrusion (22) and a connecting surface (23) are formed above the connecting platform (21), and a positioning buckle connector (221) is formed on the connecting protrusion (22).

3. The connection structure between the pump cover and the car wash pump according to claim 2, characterized in that: The connecting platform (21) of the washing pump base (2) is provided with an elastic latch (24) that cooperates with the anti-retraction protrusion (16).

4. The connection structure between the pump cover and the car wash pump according to claim 1, characterized in that: A micro motor (25) is fixedly installed inside the pump base (2) of the washing pump. A terminal (26) is fixed on the micro motor (25), and a connection hole (261) is opened on the terminal (26).

5. The connection structure between the pump cover and the car wash pump according to claim 1, characterized in that: The washing pump cover (1) has an integrally formed connecting tooth (17) and several connecting posts (18) below it.

6. The connection structure between the pump cover and the car wash pump according to claim 1, characterized in that: The inclined angle of the inclined guide groove (15) is 45°±2°.

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