A rotary connector for fuel filters

Abstract

A rotary connector for fuel filter, comprising a filter body, a joint part connected to the filter body, and a connecting column connected to the joint part, the joint part is provided with two first clamping blocks and a limiting plate fixedly connected to the first clamping blocks, the two first clamping blocks are symmetrically arranged with the center axis of the joint part as the axis, the connecting column is provided with two first connecting rods fixedly connected to the connecting column and second clamping blocks fixedly connected to the first connecting rods, the first clamping blocks are provided with first wedge surfaces, the second clamping blocks are provided with second wedge surfaces, the inclinations of the first wedge surfaces and the second wedge surfaces are matched when the first clamping blocks and the second clamping blocks are in contact, and at this time, the second clamping blocks and the limiting plate are in a mutual interference state.

Description

Technical Field

[0001] This utility model relates to the field of fuel filter technology, and in particular to a rotary connector for fuel filters. Background Technology

[0002] Fuel filters are common automotive components, primarily preventing impurities in the fuel from entering the fuel pump and causing blockages. Current technologies typically employ the following installation methods for fuel filters and their connecting posts on the vehicle: First, direct snap-fit ​​connection. This method has low reliability, especially as automotive components age, further degrading the connection's stability. Second, threaded connection using bolts. While this method offers higher stability, the limited space inside the vehicle can make installation inconvenient, significantly reducing installation efficiency. Third, a method involving a first locking block on the connecting post and a second locking block on the fuel filter's connector. Both blocks have wedge-shaped surfaces, and are then connected by rotation to secure the connecting post and connector. However, this method also suffers from reduced connection stability as automotive components age. Summary of the Invention

[0003] To address the aforementioned issues, this invention provides a rotary connector for fuel filters that improves ease of installation and connection stability.

[0004] The technical solution of this utility model is as follows: A rotary connector for a fuel filter includes a filter body, a connector component connected to the filter body, and a connecting post connected to the connector component. The connector component is provided with two first snap-fit ​​blocks and a limiting plate fixedly connected to the first snap-fit ​​blocks. The two first snap-fit ​​blocks are symmetrically arranged about the central axis of the connector component. The connecting post is provided with two first connecting rods fixedly connected to the connecting post and a second snap-fit ​​block fixedly connected to the first connecting rods. The first snap-fit ​​block is provided with a first wedge surface, and the second snap-fit ​​block is provided with a second wedge surface. When the first snap-fit ​​block and the second snap-fit ​​block are in contact, the inclinations of the first wedge surface and the second wedge surface are matched, and at this time the second snap-fit ​​block and the limiting plate are in a mutually abutting state.

[0005] Using the above technical solution, firstly, the connecting post is inserted into the connector component, ensuring that the first and second locking blocks are not in contact. Then, by rotating the filter body at a certain angle, the first wedge surface on the first locking block contacts the second wedge surface on the second locking block. The inclinations of the first and second wedge surfaces are matched, so continuing to rotate the filter body can make the first and second locking blocks engage. At the same time, since the limiting plate is in contact with the second locking block at this time, the limiting plate can restrict the vertical sliding of the second limiting block, thereby ensuring the relative position stability between the first and second locking blocks, and thus ensuring the relative position stability between the connecting post and the filter body.

[0006] A further feature of this invention is that the first wedge surface and the second wedge surface are respectively provided with a plurality of first protruding teeth and a plurality of second protruding teeth, the distance between the upper surface of the first protruding tooth and the first wedge surface is less than or equal to 1 mm, and the distance between the upper surface of the second protruding tooth and the second wedge surface is less than or equal to 1 mm.

[0007] By adopting the above technical solution, since the first wedge surface and the second wedge surface are respectively provided with a number of first protrusions and a number of second protrusions, the friction between the first locking block and the second locking block can be increased, thereby further preventing relative displacement between the first locking block and the second locking block and further improving the stability of the fuel filter installation.

[0008] A further feature of this invention is that the limiting plate is provided with a first positioning hole, and the second snap-fit ​​block is provided with a second positioning hole. The first positioning hole and the second positioning hole are fixedly connected by a positioning component. When the first positioning block and the second positioning block are in a snap-fit ​​state, the positions of the first positioning hole and the second positioning hole correspond to each other.

[0009] By adopting the above technical solution, when the first snap-fit ​​block and the second snap-fit ​​block are in the snap-fit ​​state, the positions of the first positioning hole and the second positioning hole correspond. At this time, the positioning element is inserted into the first positioning hole and the second positioning hole, thereby further ensuring that the second snap-fit ​​block cannot be displaced relative to the first snap-fit ​​block, and thus further improving the stability of the fuel filter installation.

[0010] A further feature of this invention is that the positioning member is provided with an elastic protrusion, the second snap-fit ​​block is provided with a positioning groove, the positioning groove is connected to the second positioning hole, the diameter of the elastic protrusion is larger than the diameter of the positioning member, and the shape and size of the elastic protrusion and the positioning groove are adapted to each other.

[0011] By adopting the above technical solution, since the positioning component is provided with an elastic protrusion and the second snap-fit ​​block is provided with a positioning groove, the diameter of the elastic protrusion is larger than the diameter of the positioning component, and the elastic protrusion has a certain elasticity. Therefore, the elastic protrusion will be compressed when it enters the second positioning hole and will recover its deformation when it enters the positioning groove, thereby further improving the connection stability between the positioning component and the second snap-fit ​​block. Compared with the bolt fixing method, it is much more convenient for users to install the positioning component into the first positioning hole and the second positioning hole, thereby further improving the stability of the connection structure between the connecting column and the fuel filter as a whole. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the structure of a rotary connector for a fuel filter according to a specific embodiment of the present invention.

[0013] Appendix Figure 2 This is a schematic diagram of the connecting post in a rotary connector for a fuel filter according to a specific embodiment of the present invention.

[0014] Appendix Figure 3 This is a schematic diagram of the connector component in a rotary connector for a fuel filter according to a specific embodiment of the present invention.

[0015] Appendix Figure 4 This is a schematic diagram of the positioning element in a rotary connector for a fuel filter according to a specific embodiment of the present invention.

[0016] Appendix Figure 5 This is a cross-sectional view of the second snap-fit ​​block in a rotary connector for a fuel filter according to a specific embodiment of the present invention.

[0017] 1-Filter body, 2-Connector component, 3-Connecting post, 4-First snap-fit ​​block, 5-Limiting plate, 6-First connecting rod, 7-Second snap-fit ​​block, 8-First wedge surface, 9-Second wedge surface, 10-First protrusion, 11-Second protrusion, 12-First positioning hole, 13-Second positioning hole, 14-Positioning component, 15-Elastic protrusion, 16-Positioning groove. Detailed Implementation

[0018] like Figure 1-5As shown, a rotary connector for a fuel filter includes a filter body 1, a connector component 2 connected to the filter body 1, and a connecting post 3 connected to the connector component 2. The connector component 2 is provided with two first snap-fit ​​blocks 4 and a limiting plate 5 fixedly connected to the first snap-fit ​​blocks 4. The two first snap-fit ​​blocks 4 are symmetrically arranged about the central axis of the connector component 2. The connecting post 3 is provided with two first connecting rods 6 fixedly connected to the connecting post 3 and a second snap-fit ​​block 7 fixedly connected to the first connecting rods 6. The first snap-fit ​​block 4 is provided with a first wedge surface 8, and the second snap-fit ​​block 7 is provided with a second wedge surface 9. When the first snap-fit ​​block 4 and the second snap-fit ​​block 7 are in contact, the inclinations of the first wedge surface 8 and the second wedge surface 9 are matched, and at this time the second snap-fit ​​block 7 and the limiting plate 5 are in a mutually abutting state.

[0019] First, insert the connecting post 3 into the connector component 2, ensuring that the first locking block 4 and the second locking block 7 are not in contact. Then, rotate the filter body 1 by a certain angle so that the first wedge surface 8 on the first locking block 4 contacts the second wedge surface 9 on the second locking block 7. The inclinations of the first wedge surface 8 and the second wedge surface 9 are matched. Therefore, continuing to rotate the filter body 1 can make the first locking block 4 and the second locking block 7 be in a locking state. At the same time, since the limiting plate 5 is in abutting state with the second locking block 7 at this time, the limiting plate 5 can restrict the vertical sliding of the second limiting block, thereby ensuring the relative position between the first locking block 4 and the second locking block 7 is stable, and thus ensuring the relative position between the connecting post 3 and the filter body 1 is stable.

[0020] The first wedge surface 8 and the second wedge surface 9 are respectively provided with a plurality of first protrusions 10 and a plurality of second protrusions 11. The distance between the upper surface of the first protrusion 10 and the first wedge surface 8 is less than or equal to 1 mm, and the distance between the upper surface of the second protrusion 11 and the second wedge surface 9 is less than or equal to 1 mm.

[0021] Since the first wedge surface 8 and the second wedge surface 9 are respectively provided with a number of first protruding teeth 10 and a number of second protruding teeth 11, the friction between the first locking block 4 and the second locking block 7 can be increased, thereby further preventing relative displacement between the first locking block 4 and the second locking block 7 and further improving the stability of the fuel filter installation.

[0022] The limiting plate 5 is provided with a first positioning hole 12, and the second snap-fit ​​block 7 is provided with a second positioning hole 13. The first positioning hole 12 and the second positioning hole 13 are fixedly connected by a positioning member 14. When the first positioning block and the second positioning block are in a snap-fit ​​state, the positions of the first positioning hole 12 and the second positioning hole 13 correspond to each other.

[0023] When the first snap-fit ​​block 4 and the second snap-fit ​​block 7 are in the snap-fit ​​state, the positions of the first positioning hole 12 and the second positioning hole 13 correspond. At this time, the positioning member 14 is inserted into the first positioning hole 12 and the second positioning hole 13, thereby further ensuring that the second snap-fit ​​block 7 cannot be displaced relative to the first, and thus further improving the stability of the fuel filter installation.

[0024] The positioning member 14 is provided with an elastic protrusion 15, and the second snap-fit ​​block 7 is provided with a positioning groove 16. The positioning groove 16 is connected to the second positioning hole 13. The diameter of the elastic protrusion 15 is larger than the diameter of the positioning member 14, and the shape and size of the elastic protrusion 15 and the positioning groove 16 are adapted to each other.

[0025] Because the positioning member 14 is provided with an elastic protrusion 15 and the second snap-fit ​​block 7 is provided with a positioning groove 16, the diameter of the elastic protrusion 15 is larger than the diameter of the positioning member 14, and the elastic protrusion 15 has a certain elasticity. Therefore, the elastic protrusion 15 will be compressed when it enters the second positioning hole 13 and will recover its deformation when it enters the positioning groove 16, thereby further improving the connection stability between the positioning member 14 and the second snap-fit ​​block 7. Compared with the bolt fixing method, it is much more convenient for users to install the positioning member 14 into the first positioning hole 12 and the second positioning hole 13, thereby further improving the stability of the connection structure between the connecting column 3 and the fuel filter as a whole.

Claims

1. A rotary connector for a fuel filter, characterized in that: The filter includes a filter body, a connector component connected to the filter body, and a connecting post connected to the connector component. The connector component has two first snap-fit ​​blocks and a limiting plate fixedly connected to the first snap-fit ​​blocks. The two first snap-fit ​​blocks are symmetrically arranged about the central axis of the connector component. The connecting post has two first connecting rods fixedly connected to the connecting post and a second snap-fit ​​block fixedly connected to the first connecting rods. The first snap-fit ​​block has a first wedge surface, and the second snap-fit ​​block has a second wedge surface. When the first snap-fit ​​block and the second snap-fit ​​block are in contact, the inclinations of the first wedge surface and the second wedge surface are matched, and at this time the second snap-fit ​​block and the limiting plate are in a state of mutual abutment.

2. A rotary connector for a fuel filter according to claim 1, characterized in that: The first wedge surface and the second wedge surface are respectively provided with a plurality of first protruding teeth and a plurality of second protruding teeth. The distance between the upper surface of the first protruding tooth and the first wedge surface is less than or equal to 1 mm, and the distance between the upper surface of the second protruding tooth and the second wedge surface is less than or equal to 1 mm.

3. A rotary connector for a fuel filter according to claim 1, characterized in that: The limiting plate is provided with a first positioning hole, and the second snap-fit ​​block is provided with a second positioning hole. The first positioning hole and the second positioning hole are fixedly connected by a positioning component. When the first positioning block and the second positioning block are in a snap-fit ​​state, the positions of the first positioning hole and the second positioning hole correspond to each other.

4. A rotary connector for a fuel filter according to claim 3, characterized in that: The positioning element is provided with an elastic protrusion, and the second snap-fit ​​block is provided with a positioning groove. The positioning groove is connected to the second positioning hole. The diameter of the elastic protrusion is larger than the diameter of the positioning element, and the shape and size of the elastic protrusion and the positioning groove are adapted to each other.

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