European standard direct current gun

Abstract

The European standard direct current gun comprises a first clamping block and a second clamping block which are connected to the tail end of a gun body and used for limiting a cable waterproof ring, and clamping flanges used for clamping a cable are arranged in the first clamping block and the second clamping block; the flexible sheath sleeves the cable and is in interference fit with the cable, the tail part of the first clamping block is provided with a first sunken groove, the tail part of the second clamping block is provided with a second sunken groove, and the flexible sheath is filled in a limiting ring combined by the first sunken groove and the second sunken groove; the utility model has the advantages that the tail parts of the first clamping block and the second clamping block are respectively and additionally provided with the first sunken groove and the second sunken groove, and the flexible sheath is assembled in the limiting ring formed by combining the first sunken groove and the second sunken groove, so that the collision buffering of the first clamping block or the second clamping block caused by violent shaking of the cable is formed, and the possibility that the first clamping block and the second clamping block are separated from the gun body is reduced; meanwhile, a new layer of waterproof sealing structure is formed between the flexible sheath and the cable and between the flexible sheath and the first clamping block and between the flexible sheath and the second clamping block.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors for new energy vehicles, in particular to a European standard DC gun. Background Art

[0002] With the development of automobile technology and the change of energy structure, electric vehicles have gradually become a new trend. In the popularization of electric vehicles, charging piles are like gas stations, which can easily replenish energy for electric vehicles anytime and anywhere. The charging piles are equipped with charging guns like gas guns, which can be directly plugged into the charging port on the car for charging.

[0003] During the charging process, the protection measures for the charging plug in the charging station are not perfect enough. In extreme weather, the cable will shake violently. In the absence of a buffer at the connection at the rear end of the gun body, the cable will collide with the clamping blocks on both sides of the cable waterproof ring at the rear end of the gun body, which may cause the clamping block to be damaged, causing the cable waterproof ring to fall out of the rear end of the gun body, resulting in waterproof failure. There is a short-circuit safety hazard that needs to be improved. Utility Model Content

[0004] A technical problem to be solved by the present application is to overcome the defects of the above related technologies and provide a European standard DC gun with good waterproofness and complete usability.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a European standard DC gun, including a first clamping block and a second clamping block connected to the rear end of the gun body for limiting the cable waterproof ring, the first clamping block and the second clamping block are connected in the middle to form a channel for the cable to pass through, and the first clamping block and the second clamping block are both provided with clamping flanges for clamping the cable; it also includes a flexible sheath, the flexible sheath is arranged on the cable and has an interference fit, the tail of the first clamping block is provided with a first groove, the tail of the second clamping block is provided with a second groove, and the flexible sheath is filled in a limiting ring formed by the first groove and the second groove.

[0006] Compared with the related art, the utility model has the following advantages: a first groove is added to the tail of the first clamping block, a second groove is added to the tail of the second clamping block, and a flexible sheath is filled in the limiting ring formed by the first groove and the second groove to form a buffer for the collision of the first clamping block or the second clamping block due to the violent shaking of the cable, thereby reducing the possibility of the first clamping block and the second clamping block being separated from the gun body and avoiding waterproof failure. At the same time, a new layer of waterproof sealing structure is formed between the flexible sheath, the cable, the first clamping block and the second clamping block.

[0007] As an improvement, insertion holes are provided on both sides of the first clamping block, and the outer wall of the insertion hole protrudes into the first recess to form a first abutting surface; insertion posts that cooperate with the insertion holes are provided on both sides of the second clamping block, and the outer wall of the insertion post protrudes into the second recess to form a second abutting surface; arc-shaped concave surfaces in the radial direction are provided on both sides of the upper end of the flexible sheath, and a part of the arc-shaped concave surface abuts against the first abutting surface, and another part of the arc-shaped concave surface abuts against the second abutting surface. After the abutting surface abuts against the arc-shaped concave surface, it can form circumferential limitation on the flexible sheath, can also form a certain clamping force on the flexible sheath, and form a guiding and positioning effect, which is convenient for the assembly of the flexible sheath with the first clamping block and the second clamping block.

[0008] Preferably, an axially extending axial convex ring is provided on the inner circle of the bottom end of the flexible sheath, and the bottom surface of the axial convex ring is on the same plane as the bottom surfaces of the first clamping block and the second clamping block. The axial convex ring supports the lower edge of the limiting ring, further reducing the possibility of collision between the cable and the first clamping block and the second clamping block.

[0009] Preferably, two relief dovetail tenons are provided at the tail of the gun body, first cutouts are provided on both sides of the upper end of the first clamping block, second cutouts are provided on both sides of the upper end of the second clamping block, and after the first clamping block and the second clamping block are closed, the first cutout and the corresponding second cutout are spliced into a dovetail groove that cooperates with the dovetail tenon. Through the cooperation of the relief dovetail tenon and the dovetail groove spliced by the defective first cutout and the corresponding second cutout, a mortise and tenon connection structure with stable connection is formed, avoiding the axial movement of the first clamping block and the first clamping block relative to the gun body.

[0010] Preferably, the clamping flanges of the first clamping block and the second clamping block are both provided with two circles. The upper clamping flange is arranged on the lower edge of the abutting ring for limiting the cable waterproof ring, and the lower clamping flange is arranged on the upper edge of the limiting ring.

[0011] As an improvement, a reinforcing rib is provided between the abutting ring and the limiting ring. It is used to strengthen the structural firmness of the first clamping block and the second clamping block.

[0012] Preferably, the clamping flange is inclined towards the side close to the edge. It is used to form a better clamping effect on the cable and can prevent the cable from rotating circumferentially.

[0013] As an improvement, the gun head is detachably connected to the terminal fixing seat. The gun head is provided with a DC terminal insertion cylinder and a signal and protection terminal jack. The terminal fixing seat is fixedly connected to the gun body. The terminal fixing seat is provided with a DC terminal jack, a signal terminal insertion cylinder and a PE terminal insertion cylinder. The head of the DC wiring terminal passing through the DC terminal jack is inserted into the DC terminal insertion cylinder, and the signal terminal insertion cylinder and the PE terminal insertion cylinder are inserted into the signal and protection terminal jack. This makes the gun head only serve as the peripheral protection of the wiring terminals and does not participate in the fixation of each wiring terminal. Therefore, when the gun head is broken, it can be directly replaced without overall disassembly, reducing the maintenance cost and improving the maintenance speed.

[0014] As an improvement, a tail plate is provided at the tail end of the DC wiring terminal, and the tail plate is in contact with the wall of the tail plate groove of the DC wiring terminal clamping seat and is axially limited. After the DC wiring terminal is clamped with the DC wiring terminal clamping seat, the axial movement and circumferential rotation of the DC wiring terminal can be restricted, which is convenient for assembly and fixation with the terminal fixing seat. Description of the Drawings

[0015] Figure 1 is a perspective view of the European standard DC gun of the present application.

[0016] Figure 2 is a partial exploded view of the gun tail part of the European standard DC gun of the present application.

[0017] Figure 3 is a perspective view of the first clamping block of the European standard DC gun of the present application.

[0018] Figure 4 is a perspective view of the second clamping block of the European standard DC gun of the present application.

[0019] Figure 5 is a perspective view of the flexible sheath of the European standard DC gun of the present application.

[0020] Figure 6 is a partial exploded view (gun head) of the European standard DC gun of the present application.

[0021] Figure 7 is an exploded view of the gun joint part of the European standard DC gun of the present application.

[0022] Description of the Reference Numerals:

[0023] 1. Gun head, 1-1. DC terminal insertion cylinder, 1-2. Signal and protection terminal jack, 2. Gun body, 2-1. Dovetail tenon, 2-2. Limit rib, 3. Handle, 4. Cable, 5. First clamping block, 5-1. First cut-off corner, 5-3. First limit groove, 5-6. Insertion hole, 6. Second clamping block ring, 6-1. Second cut-off corner, 6-2. Abuttment ring, 6-3. Second limit groove, 6-4. Clamping flange, 6-5. Reinforcing rib, 6-6. Insertion post, 7. Cable waterproof ring, 8. Flexible sheath, 8-1. Waterproof convex ring, 8-2. Axial convex ring, 8-3. Arc-shaped concave surface, 9. Terminal fixing seat, 9-1. DC terminal jack, 9-2. PE terminal insertion cylinder, 9-2. Signal terminal insertion cylinder, 10. DC wiring terminal, 10-1. Tail plate, 11. DC wiring terminal clamping seat. Detailed implementation manners

[0024] First of all, those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0025] The present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] This preferred embodiment is a European standard DC gun as shown in Figure 1 and 2 which includes a gun head 1, a gun body 2, a handle 3, a cable 4, a plurality of terminal assemblies, a first clamping block 5 and a second clamping block 6 connected to the tail end of the gun body 2 for limiting the cable waterproof ring 7. The first clamping block 5 and the second clamping block 6 are connected by two screws in the middle to form a channel for the cable 4 to pass through. Multiple waterproof convex rings are provided on the inner wall and outer wall of the cable waterproof ring 7 for forming waterproof seals with the cable 4 and the gun body 2 respectively. Clamping flanges 6-4 for clamping the cable 4 are provided in both the first clamping block 5 and the second clamping block 6. It further includes a flexible sheath 8. Three waterproof convex rings 8-1 are provided on the inner wall of the flexible sheath 8. The flexible sheath 8 is sleeved on the cable 4 and forms an interference fit to form another layer of waterproof seal structure. A first recess 5-3 is provided at the tail of the first clamping block 5, and a second recess 6-3 is provided at the tail of the second clamping block 6. The flexible sheath 8 is filled in the limit ring formed by the combination of the first recess 5-3 and the second recess 6-3. Among them, two screw holes are provided on both sides of the middle part of the first clamping block 5, and two counterbores are provided on both sides of the middle part of the second clamping block 6. The second clamping block 6 and the first clamping block 5 are closed together by two screws. After the first clamping block 5 and the second clamping block 6 are closed, an abutment ring 6-2 for supporting the bottom end of the cable waterproof ring 7 is formed at the upper part.

[0027] In some embodiments, the first clamping block 5 is asFigure 3 Both sides as shown are provided with insertion holes 5-6, and the outer wall of the insertion hole 5-6 protrudes into the first groove 5-3 to form a first abutting surface; the second clamping block 6 is as Figure 4 shown, both sides are provided with insertion posts 6-6 that cooperate with the insertion holes 5-6. The outer wall of the root of the insertion post 6-6 protrudes into the second groove 6-3 to form a second abutting surface; the flexible sheath 8 is as Figure 5 shown, and both sides of the upper end are provided with symmetrically radial arc-shaped concave surfaces 8-3. A part of the arc-shaped concave surface 8-3 abuts against the first abutting surface, and another part of the arc-shaped concave surface 8-3 abuts against the second abutting surface. As Figure 2 shown, the flexible sheath 8 can be stably inserted into the first groove 5-3 to facilitate assembly.

[0028] In some embodiments, an axially extending axial convex ring 8-2 is provided on the inner circle of the bottom end of the flexible sheath 8, and the bottom surface of the axial convex ring 8-2 is on the same plane as the bottom surfaces of the first clamping block 5 and the second clamping block 6.

[0029] In this embodiment, two relief dovetail tenons 2-1 are provided at the tail of the gun body 2. First notches 5-1 are provided on both sides of the upper end of the first clamping block 5, and second notches 6-1 are provided on both sides of the upper end of the second clamping block 6. After the first clamping block 5 and the second clamping block 6 are closed, the first notch 5-1 and the corresponding second notch 6-1 are spliced into a dovetail groove that matches the dovetail tenon 2-1, as Figure 1 shown.

[0030] In this embodiment, both the clamping flanges of the first clamping block 5 and the second clamping block 6 are provided with two circles. The upper clamping flange protrudes from the lower edge of the abutting ring, and the lower clamping flange protrudes from the upper edge of the limiting ring.

[0031] Preferably, as Figure 4 shown, a reinforcing rib 6-5 is provided between the abutting ring 6-2 and the limiting ring 6-3 to enhance the structural strength of the second clamping block 6. The first clamping block 5 is also provided with the same reinforcing rib to increase the structural strength.

[0032] In some embodiments, the clamping flange 6-4 of the second clamping block 6 inclines towards the side close to the edge, and the middle clamping flange 6-4 is symmetrically arranged without deflection; the same is true for the clamping flange of the first clamping block 5. That is, the clamping flanges on both sides of the clamping block incline outwards respectively, and when clamping and fixing the cable, it can avoid the circumferential rotation of the cable clockwise or counterclockwise at the same time.

[0033] In some embodiments, as Figure 6As shown, the gun head 1 is detachably connected to the terminal fixing seat 9 by a plurality of screws. The gun head 1 is provided with a DC terminal insertion cylinder 1-1 and a signal and protection terminal jack 1-2. The terminal fixing seat 9 is fixedly connected to the gun body 2. The terminal fixing seat 9 is provided with two DC terminal jacks 9-1, a PE terminal insertion cylinder 9-2 and two signal terminal insertion cylinders 9-3. The head of the DC wiring terminal 10 passing through the DC terminal jack 9-1 is inserted into the DC terminal insertion cylinder 1-1, and the PE terminal insertion cylinder 9-2 and the signal terminal insertion cylinder 9-3 are inserted into the signal and protection terminal jack 1-2. Thus, the DC wiring terminal 10, the PE wiring terminal, and the PP and CP signal terminals are all fixed on the terminal fixing seat 9. The gun head 1 does not participate in the fixing of each wiring terminal and can be directly disassembled and replaced during crushing without overall disassembly.

[0034] In some embodiments, as Figure 7 shown, the tail end of the DC wiring terminal 10 is provided with a flat tail plate 10-1. The tail plate 10-1 is in contact with the wall of the tail plate groove of the DC terminal clamping seat 11 and is axially limited. On the outer sides of the two sockets at the front end of the DC terminal clamping seat 11, there are notches for the radial embedding of the sleeve of the DC wiring terminal 10. The tail plate groove is arranged at the rear end of the DC terminal clamping seat 11. The flat end of the cable 4 is inserted into the tail plate groove to form an electrical connection with the tail plate 10-1 at the tail end of the DC wiring terminal 10. After the DC wiring terminal 10 is embedded and clamped with the DC terminal clamping seat 11, the axial movement and circumferential rotation of the DC wiring terminal 10 can be restricted, which is convenient for the assembly and fixing of the DC wiring terminal 10 and the DC terminal clamping seat 11 with the terminal fixing seat 9.

[0035] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A European standard DC gun, comprising a first clamping block and a second clamping block connected to the rear end of the gun body for limiting the cable waterproof ring, the first clamping block and the second clamping block are connected in the middle to form a channel for the cable to pass through, and the first clamping block and the second clamping block are both provided with a clamping flange for clamping the cable, characterized in that: It also includes a flexible sheath, which is sleeved on the cable and has an interference fit. The tail of the first clamping block is provided with a first groove, the tail of the second clamping block is provided with a second groove, and the flexible sheath is filled in a limiting ring formed by the first groove and the second groove.

2. A European standard DC gun according to claim 1, characterized in that: The first clamping block is provided with plug-in holes on both sides, and the outer wall of the plug-in holes protrudes into the first groove to form a first abutment surface; the second clamping block is provided with plug-in columns matching the plug-in holes on both sides, and the outer wall of the plug-in columns protrudes into the second groove to form a second abutment surface; radial arc-shaped concave surfaces are provided on both sides of the upper end of the flexible sheath, a part of the arc-shaped concave surface abuts against the first abutment surface, and the other part of the arc-shaped concave surface abuts against the second abutment surface.

3. A European standard DC gun according to claim 1, characterized in that: An inner ring at the bottom end of the flexible sheath is provided with an axially extending axial convex ring, and the bottom surface of the axial convex ring is on the same plane as the bottom surfaces of the first clamping block and the second clamping block.

4. A European standard DC gun according to claim 1, characterized in that: The rear part of the gun body is provided with two embossed dovetail tenons, the first clamping block is provided with first notched corners on both sides of the upper end, and the second clamping block is provided with second notched corners on both sides of the upper end. When the first clamping block and the second clamping block are closed, the first notched corner and the second notched corner are spliced ​​into a dovetail groove matching the dovetail tenon.

5. A European standard DC gun according to claim 1, characterized in that: The clamping flanges of the first clamping block and the second clamping block are each provided with two circles, the clamping flange of the upper circle is arranged on the lower edge of the abutment ring for limiting the cable waterproof ring, and the clamping flange of the lower circle is arranged on the upper edge of the limiting ring.

6. A European standard DC gun according to claim 5, characterized in that: Reinforcing ribs are arranged between the abutting ring and the limiting ring.

7. A European standard DC gun according to claim 1, characterized in that: The clamping flange is inclined toward a side close to the edge.

8. A European standard DC gun according to claim 1, characterized in that: The gun head is detachably connected to the terminal fixing seat, and a DC terminal plug-in cylinder and a signal and protection terminal jack are arranged on the gun head. The terminal fixing seat is fixedly connected to the gun body, and a DC terminal jack, a signal terminal plug-in cylinder and a PE terminal plug-in cylinder are arranged on the terminal fixing seat. The DC terminal head passing through the DC terminal jack is plugged into the DC terminal plug-in cylinder, and the signal terminal plug-in cylinder and the PE terminal plug-in cylinder are inserted into the signal and protection terminal jack.

9. A European standard DC gun according to claim 1 or 8, characterized in that: A tail plate is provided at the rear end of the DC wiring terminal, and the tail plate is attached to the wall of the tail plate slot of the DC wiring terminal clamping seat and is axially limited.

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