A flange buckle type double-ear automobile charging pile cable waterproof joint structure

Abstract

This utility model discloses a flange-type double-clamp car charging pile cable waterproof connector structure, including a flange body, which includes a flange plate and a connecting ring. The outer wall of the connecting ring has external threads, and the flange plate has a through hole in the middle. A waterproof ring is provided inside the connecting ring, and the lower end of the waterproof ring has an annular step. Clamping claws are fitted onto the outer wall of the waterproof ring. A snap-fit ​​type clamping cap for locking the clamping claws is threaded onto the external threads. Two snap-fit ​​type clamping ears are provided on the upper outer wall of the snap-fit ​​type clamping cap, and the two ends of the two snap-fit ​​type clamping ears are respectively connected by clamping ear fastening bolts. A waterproof gasket is provided under the flange plate. Multiple connecting holes are arranged circumferentially on the flange plate, and connecting bolts are inserted into the connecting holes. A fastening nut is provided at the lower end of each connecting bolt. This utility model has a simple structure and low production cost; it is convenient to connect and install with the charging pile box, has good sealing and waterproofing effects; and it facilitates cable fixing, preventing damage to the charging pile during charging.

Description

Technical Field

[0001] This utility model relates to the field of fixing and waterproofing technology for charging cables, and in particular to a flange-clamp type double-ear waterproof connector structure for automotive charging pile cables. Background Technology

[0002] The charging gun cable is fixed to the charging pile enclosure. The connection point needs to be dustproof and waterproof, and also serves to secure the cable. The cable stress should not affect the internal wiring connections of the charging pile when the charging gun is pulled. Currently, there are three common types of waterproof charging pile connectors on the market:

[0003] Type 1 uses a gland thread connection. The external thread of one end of the connector body passes through the box, and then the hexagonal nut is tightened to fix the connector to the box. The hexagonal nut has a large number of opposite sides, which requires a large installation torque. Moreover, it requires two people to work together during installation, which is time-consuming, labor-intensive and inefficient.

[0004] Type 2 is as follows: CN207015185U discloses a charging pile flange. It includes a flange seat and a sealing ring. A cable hole is located at the center of the flange seat, and the sealing ring is fitted inside the cable hole. The feature is that it also includes two semi-circular half-flanges. The flange seat has a fastening seat with a fastening hole, and the half-flanges have connecting holes. The connecting holes and fastening holes are connected by screws. The two half-flanges correspondingly form a fastening ring, which fastens the sealing ring. A sealing limiting ring is located at the tail of the sealing ring, and a retaining ring extends outward from the tail of the sealing ring as a sealing limiting ring.

[0005] However, existing charging stations are set up in outdoor open-air locations, which places higher demands on waterproofing. The sealing rings are only secured by two semi-circular half-flanges, which are elliptical and have a larger gap with the flange seat. This makes it easy for water to leak into the box, leading to charging station malfunctions and damage.

[0006] Category 3 includes, for example, "CN209267135U" which discloses a flange-type waterproof connector for charging piles. This connector includes a connector body and a locking nut. The connector body is a pipe fitting with an external thread interface at one end and a flange at the other. A sealing ring groove is provided on the end face of the flange, and an O-ring is embedded in the groove. The locking nut connects to the external thread interface of the connector body via threads. A circular washer and a ring seal are coaxially arranged inside the locking nut. Four first connection holes are provided on the flange, and bolts are installed in these holes. The bolts connect to welded waterproof nuts inside the charging pile cabinet. This waterproof connector directly fixes the flange on the connector body to the charging pile cabinet using bolts, replacing the traditional external thread and locking nut connection structure. This solves the problems of low installation efficiency, lack of compatible installation tools, and the need for installation space inside the cabinet associated with traditional threaded connections. It is easy to install, has a simple structure, and is low in cost.

[0007] However, during actual installation, the welded waterproof nuts inside the charging station cabinet are prone to stripping and water leakage, making cabinet repairs difficult. Secondly, the annular seal of the connector has limited clamping force on the cable; with the charging gun being pulled frequently, the charging cable is easily pulled out, leading to charging station malfunctions and damage. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide a flange-clamp type double-clamp car charging pile cable waterproof joint structure, so as to solve the problems in the background art.

[0009] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0010] A flange-type double-clamp car charging pile cable waterproof connector structure includes a flange body, which includes a flange plate and a connecting ring disposed on the flange plate. The outer wall of the connecting ring has external threads. The flange plate has a through hole in the middle. The inner diameter of the connecting ring is larger than the diameter of the through hole. A waterproof ring is disposed inside the connecting ring. The lower end of the waterproof ring has an annular step, the outer diameter of which is larger than the diameter of the through hole. A clamping claw is fitted on the outer wall of the waterproof ring, and the lower end of the clamping claw is inserted between the waterproof ring and the connecting ring. The external threads are threaded with... A snap-fit ​​clamping cap for locking the clamping claws has two snap-fit ​​clamping ears on its upper outer wall. The two snap-fit ​​clamping ears are symmetrically arranged, and their ends are connected by clamping ear fastening bolts. A waterproof gasket is provided under the flange. The flange has a plurality of first connecting holes arranged in a circumferential array. The waterproof gasket has a second connecting hole corresponding to the first connecting holes. A connecting bolt is inserted into the connecting hole. The lower end of the connecting bolt passes through the waterproof gasket. A fastening nut is provided on the connecting bolt below the waterproof gasket.

[0011] Furthermore, the flange, the connecting ring, and the external thread are integrally machined.

[0012] Furthermore, the outer wall of the upper end of the snap-on clamping cap is provided with a first annular snap-on groove with an outward opening, and the two snap-on clips are engaged with the first annular snap-on groove.

[0013] Furthermore, the snap-on clamp is provided with a second annular snap-on groove that engages with the first annular snap-on groove, and the opening of the second annular snap-on groove faces inward.

[0014] Furthermore, the bayonet-type clip consists of two crescent-shaped fastening rings.

[0015] Furthermore, both of the bayonet-type clips have anti-slip grooves on their inner sides.

[0016] Furthermore, the flange has four first connection holes arranged in a circumferential array.

[0017] Furthermore, the connecting bolts are riveted onto the flange.

[0018] Furthermore, one of the snap-fit ​​clamps has bolt through holes at both ends, and the other snap-fit ​​clamp has threaded holes at both ends. The clamp fastening bolt is an internal hex bolt, and the corresponding clamp fastening bolt passes through the bolt through hole and connects to the threaded hole.

[0019] Furthermore, the waterproof gasket has protruding annular ribs on both the upper and lower end faces.

[0020] The beneficial effects of this utility model are:

[0021] 1. Simple structure and low production cost;

[0022] 2. It is easy to connect and install with the charging pile box, and has a good sealing and waterproof effect;

[0023] 3. It facilitates cable fixing and prevents damage to the charging station caused by pulling during the charging process. Attached Figure Description

[0024] Figure 1 This is an exploded structural diagram of an embodiment of the flange-clamp type double-ear waterproof connector structure for automotive charging pile cables of this utility model.

[0025] Figure 2 This is an exploded view of the installation structure of an embodiment of the flange-clamp type double-ear waterproof connector for car charging pile cables of this utility model.

[0026] Figure 3 This is an exploded perspective view of an embodiment of the flange-clamp type double-ear waterproof connector structure for car charging pile cables of this utility model.

[0027] Figure 4 This is a top view schematic diagram of an embodiment of a flange-clamp type double-ear waterproof connector structure for automotive charging pile cables according to the present invention.

[0028] Figure 5 for Figure 4 A schematic diagram of the AA cross-sectional structure.

[0029] Attachment numbers and their descriptions:

[0030] 1. Flange body; 101. Connecting ring; 102. Flange; 103. External thread; 104. First connecting hole; 2. Connecting bolt; 3. Waterproof ring; 301. Annular step; 4. Clamping claw; 5. Snap-on clamping cap; 501. First annular snap groove; 502. Internal thread; 6. Snap-on clamping lug; 601. Anti-slip groove; 602. Second annular snap groove; 603. Bolt through hole; 604. Threaded hole; 7. Clamping lug fastening bolt; 8. Waterproof gasket; 801. Annular rib; 802. Second connecting hole; 9. Fastening nut; 10. Charging pile box; 11. Cable. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0032] Reference Figures 1 to 5 This utility model provides a flange-type double-clamp car charging pile cable waterproof connector structure, including a flange body 1. The flange body 1 includes a flange 102 and a connecting ring 101 disposed on the flange 102. The outer wall of the connecting ring 101 is provided with an external thread 103. The flange 102 has a through hole in the middle. The inner diameter of the connecting ring 101 is larger than the diameter of the through hole. A waterproof ring 3 is provided inside the connecting ring 101. The lower end of the waterproof ring 3 is provided with an annular step 301. The outer diameter of the annular step 301 is larger than the diameter of the through hole. A clamping claw 4 is sleeved on the outer wall of the waterproof ring 3. The lower end of the clamping claw 4 is inserted between the waterproof ring 3 and the connecting ring 101. A snap-fit ​​clamping cap 5 for locking the clamping claw 4 is threaded onto the threaded part 103. Two snap-fit ​​clamping ears 6 are provided on the outer wall of the upper end of the snap-fit ​​clamping cap 5. The two snap-fit ​​clamping ears 6 are symmetrically arranged, and their ends are connected by clamping ear fastening bolts 7. A waterproof gasket 8 is provided below the flange 102. Multiple first connecting holes 104 are arranged in a circular array on the flange 102. The waterproof gasket 8 has a second connecting hole 802 corresponding to the first connecting holes 104. A connecting bolt 2 is inserted into the connecting hole 104, and the lower end of the connecting bolt 2 passes through the waterproof gasket 8. A fastening nut 9 is provided on the connecting bolt 2 below the waterproof gasket 8. During use, the waterproof gasket 8 is on the mounting plate of the charging pile box 10, and the fastening nut 9 is below the mounting plate of the charging pile box 10. When the snap-fit ​​clamping cap 5 is tightened downwards, the clamping claw 4 will compress the annular step 301 to improve the waterproof seal.

[0033] The flange body 1 of this technical solution has a through hole in the center for the cable to pass through. The end face of the flange 102 has four first connecting holes 104, and connecting bolts 2 are riveted into the four first connecting holes. The connecting bolts 2 pass through the second connecting hole 802 of the waterproof gasket 8 and the charging pile box 10, and are locked with fastening nuts 9. The snap-fit ​​cap 5 has an internal thread 502, which is connected to the external thread 103. The first annular snap-fit ​​groove 201 is embedded in the second annular snap-fit ​​groove 602. The cable 11 is clamped and fixed by tightening the fastening bolts 7 to snap the clamping ears 6.

[0034] For example, in some embodiments, the flange 102, the connecting ring 101, and the external thread 103 are integrally formed. This makes the overall structure more stable.

[0035] For example, in some embodiments, the outer wall of the upper end of the snap-fit ​​cap 5 is provided with a first annular snap-fit ​​groove 501 with an outward opening, and the two snap-fit ​​clips 6 are snapped into the first annular snap-fit ​​groove 501. Such a connection is convenient to install.

[0036] For example, in some embodiments, the snap-fit ​​clip 6 is provided with a second annular snap-fit ​​groove 602 that engages with the first annular snap-fit ​​groove 501, and the opening of the second annular snap-fit ​​groove 602 faces inward. This makes the connected structure more stable.

[0037] For example, in some embodiments, the snap-fit ​​clip 6 consists of two crescent-shaped fastening rings. This facilitates the compression of the snap-fit ​​clip 6 by tightening the fastening bolt 7, thereby clamping the cable 11 for fixation.

[0038] For example, in some embodiments, the inner sides of both of the bayonet clips 6 are provided with anti-slip grooves 601. The anti-slip grooves 601 can increase the friction between the bayonet clips 6 and the cable 11, thereby fixing the cable 11 and preventing damage to the charging pile due to pulling during the charging process.

[0039] For example, in some embodiments, the flange 102 has four first connecting holes arranged in a circumferential array. Of course, the number of first connecting holes can be adjusted according to actual requirements, and can be five, six or other numbers, and is not limited to the four in the preferred embodiment.

[0040] For example, in some embodiments, the connecting bolts 2 are riveted to the flange 102. Such a connection is more reliable.

[0041] For example, in some embodiments, one of the snap-fit ​​clamps 6 has bolt through holes 603 at both ends, and the other snap-fit ​​clamp 6 has threaded holes 604 at both ends. The clamp fastening bolt 7 is an internal hex bolt, and the corresponding clamp fastening bolt 7 passes through the bolt through hole 603 and connects to the threaded hole 604. This facilitates installation and disassembly.

[0042] For example, in some embodiments, the waterproof gasket 8 has protruding annular ribs 801 on both its upper and lower end faces. This can enhance the sealing and waterproofing effect.

[0043] In summary, this utility model has a simple structure and low production cost; it is easy to connect and install with the charging pile box, and has a good sealing and waterproof effect; it is easy to fix the cable and prevent damage to the charging pile during the charging process.

[0044] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A flange-clamp type double-ear waterproof connector structure for automotive charging pile cables, characterized in that, The flange includes a flange body, which comprises a flange and a connecting ring disposed on the flange. The outer wall of the connecting ring has external threads. The flange has a through hole in the center. The inner diameter of the connecting ring is larger than the diameter of the through hole. A waterproof ring is disposed inside the connecting ring. The lower end of the waterproof ring has an annular step, the outer diameter of which is larger than the diameter of the through hole. A clamping claw is fitted onto the outer wall of the waterproof ring. The lower end of the clamping claw is inserted between the waterproof ring and the connecting ring. A snap fastener for locking the clamping claw is threaded onto the external threads. The snap-fit ​​cap has two snap-fit ​​ears on the outer wall of its upper end. The two snap-fit ​​ears are symmetrically arranged, and their ends are connected by ear fastening bolts. A waterproof gasket is provided under the flange. The flange has multiple first connection holes arranged in a circular array. The waterproof gasket has a second connection hole corresponding to the first connection holes. A connecting bolt is inserted into the connection hole. The lower end of the connecting bolt passes through the waterproof gasket. A fastening nut is provided on the connecting bolt below the waterproof gasket.

2. The flange-clamp type double-ear waterproof connector structure for automotive charging pile cables according to claim 1, characterized in that, The flange, the connecting ring, and the external thread are integrally machined.

3. The flange-clamp type double-ear waterproof connector structure for automotive charging pile cables according to claim 1, characterized in that, The outer wall of the upper end of the snap-on clamping cap is provided with a first annular snap groove with an outward opening, and the two snap-on clips are engaged with the first annular snap groove.

4. The flange-clamp type double-ear waterproof connector structure for automotive charging pile cables according to claim 3, characterized in that, The snap-on clip has a second annular snap-on groove that engages with the first annular snap-on groove, with the opening of the second annular snap-on groove facing inward.

5. The flange-clamp type double-ear waterproof connector structure for automotive charging pile cables according to claim 3, characterized in that, The bayonet-type clip has two crescent-shaped fastening rings.

6. The flange-clamp type double-ear waterproof connector structure for automotive charging pile cables according to claim 5, characterized in that, Both of the aforementioned bayonet-type clips have anti-slip grooves on their inner sides.

7. The flange-clamp type double-ear waterproof connector structure for automotive charging pile cables according to claim 1, characterized in that, The flange has four first connection holes arranged in a circumferential array.

8. The flange-clamp type double-ear waterproof connector structure for automotive charging pile cables according to claim 1, characterized in that, The connecting bolts are riveted to the flange.

9. The flange-clamp type double-ear waterproof connector structure for automotive charging pile cables according to claim 1, characterized in that, One of the snap-fit ​​clamps has bolt holes at both ends, and the other snap-fit ​​clamp has threaded holes at both ends. The clamp fastening bolt is an internal hex bolt, and the corresponding clamp fastening bolt passes through the bolt holes and connects to the threaded holes.

10. The flange-clamp type double-ear waterproof connector structure for automotive charging pile cables according to claim 1, characterized in that, The waterproof gasket has protruding annular ribs on both the upper and lower end faces.

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