Wire clamping structure and charging gun

Abstract

The utility model discloses a wire clamping structure and a charging gun. The wire clamping structure comprises a clamping jaw and a wire pressing ring. The clamping jaw comprises a first ring body and a plurality of jaw parts integrally connected to the tail end of the first ring body, and the jaw parts are arranged at intervals in the circumferential direction of the tail end of the first ring body. The coil pressing ring comprises a second ring body and a pressing cylinder integrally connected to the tail end of the second ring body, a plurality of blocking pieces are arranged on the side face of an inner ring of the pressing cylinder in the radial direction in a protruding mode, and the blocking pieces are arranged in the circumferential direction of the inner ring of the pressing cylinder at intervals. The clamping jaw is sleeved with the wire pressing ring, the second ring body is located at the tail end of the first ring body, the multiple claw parts are located in the pressing cylinder, and the blocking pieces are correspondingly located between every two adjacent claw parts one by one, so that when a wire is twisted, the twisting range of the claw parts is very small, and the wire is prevented from being twisted. And the problem that the claw part is broken due to overlarge stress is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technology in the field of charging guns, and in particular to a wire clamping structure and a charging gun, which are mainly but not limited to charging guns for new energy vehicles. Background Art

[0002] Taking the charging gun for new energy vehicles as an example, the wires connected to the tail end of the charging guns on the market currently all use wire clamping claws to clamp the wires inside. When using the charging gun, it is inevitable that the wires will be twisted forcefully. Since the claws of the wire clamping claws are embedded in the wires, when the wires are twisted, the claws of the wire clamping claws will rotate with the wires, which can easily cause the roots of the claws to be stressed and break.

[0003] For example, CN 216069641 U discloses a charging gun for new energy vehicles, including a charging gun body, on which a wire fixing mechanism is installed, the wire fixing mechanism includes a jacket, the left side of the jacket is fixedly connected to the charging gun body, a rotating sleeve is inserted into the interior of the jacket, and the rotating sleeve is connected to the jacket through a threaded structure, a pressing piece is inserted into the interior of the rotating sleeve, and the left end of the pressing piece is fixedly connected to the charging gun body, a grip rod is fixedly connected to the outer side of the rotating sleeve, and a user can drive the rotating sleeve to rotate by rotating the grip rod, so that the pressing piece clamps the connecting wire of the charging gun body.

[0004] Since the pressure piece will exert a large clamping force on the connecting wire of the charging gun body, if the wire is twisted, it will inevitably cause the pressure piece to twist, which may easily cause the pressure piece to break.

[0005] Therefore, it is necessary to study a new technical solution to solve the above problems. Utility Model Content

[0006] In view of this, the present invention aims to solve the deficiencies in the prior art, and its main purpose is to provide a wire clamping structure and a charging gun, wherein when the wire is twisted, the twisting range of the claw is very small, thereby effectively solving the problem of the claw being broken due to excessive force.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A wire clamping structure, comprising a clamping claw and a pressing wire coil;

[0009] The clamping claw comprises a first ring body and a plurality of claw parts integrally connected to the tail end of the first ring body, and the claw parts are arranged at intervals along the circumferential direction of the tail end of the first ring body;

[0010] The pressing coil comprises a second coil body and a pressing cylinder integrally connected to the tail end of the second coil body, a plurality of blocking sheets are radially protruded on the inner ring side surface of the pressing cylinder, and the plurality of blocking sheets are arranged at intervals along the circumferential direction of the inner ring of the pressing cylinder;

[0011] The pressing coil is sleeved on the clamping claw, the second coil is positioned at the tail end of the first coil, a plurality of the claws are located in the pressing cylinder, and the barrier sheets are correspondingly located between two adjacent claws.

[0012] As a preferred solution, the tail end of the claw portion has a hook portion extending radially inward, and the hook portion protrudes from the inner side surface of the barrier sheet so that the hook portion is stuck into the inner side of the outer surface of the wire.

[0013] As a preferred solution, the head end of the barrier sheet extends to the head end surface of the second ring body;

[0014] Alternatively, the head end of the barrier piece does not extend to the head end surface of the second ring body, and the head end of the barrier piece is provided with a guiding arc surface or a guiding inclined surface.

[0015] As a preferred solution, a first connection hole is provided on the first circle body, a corresponding second connection hole is provided on the second circle body, and a screw is provided to pass through the second connection hole and the first connection hole in sequence along the length direction of the wire.

[0016] As a preferred solution, a positioning column extends from the head end of the second circle body toward the first circle body, and a positioning hole is provided on the first circle body. When the pressing coil is sleeved on the claw, the positioning column extends into the corresponding positioning hole.

[0017] As a preferred solution, the tail end of the crimping coil is provided with a tail cover, and the tail cover covers the cap of the screw.

[0018] As a preferred solution, an anti-slip point is provided on the tail cover, and the outer surface of the anti-slip point has an insertion guide surface extending from the tail end toward the head end, and the head end of the anti-slip point has a stop surface to prevent the ring from slipping out toward the tail end.

[0019] As a preferred embodiment, a wire sealing plug is provided on the head end side of the first circle body of the clamping claw, and a fixing plate is provided on the head end side of the wire sealing plug, and the wire passes through the tail cover, the pressure coil, the clamping claw, the wire sealing plug and the fixing plate in sequence; and, a first assembly pin protrudes from the head end of the first circle body of the clamping claw, and a second assembly pin protrudes from the tail end side of the fixing plate, and an assembly hole passing through the head and tail ends is provided on the wire sealing plug, and the first assembly pin and the second assembly pin are respectively embedded and positioned from the tail end and the head end of the assembly hole.

[0020] A charging gun comprises a charging gun body and a wire connected to the charging gun body; the head end of the charging gun body has a charging connector, and the tail end of the charging gun body has a wire clamping structure, and the wire clamping structure is a wire clamping structure described in any of the above items.

[0021] As a preferred solution, a protective cover is provided on the charging gun body, and the protective cover is detachably covered on the charging connector.

[0022] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that it is mainly through the arrangement of the clamping claw and the pressing coil, and the inner ring side surface of the pressing cylinder of the pressing coil is radially protruded with a plurality of blocking pieces. When the pressing coil is sleeved on the clamping claw, the second coil is positioned at the tail end of the first coil, and a plurality of claws are located in the pressing cylinder, and the blocking pieces are correspondingly located between two adjacent claws one by one. In this way, if the wire is twisted, the torsion range of the claw of the clamping claw becomes very small, and the force is small, which effectively solves the problem of the claw being broken due to excessive force. Moreover, its structural design is ingenious, and the clamping claw and the pressing coil are made separately, which is easy to process and assemble.

[0023] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the charging gun of the first embodiment of the present utility model (the protective cover is covered on the charging connector);

[0025] Figure 2 is another three-dimensional diagram of the charging gun of the first embodiment of the present utility model (the protective cover is separated from the charging connector);

[0026] Figure 3 This is an exploded view of the charging gun of the first embodiment of the present utility model;

[0027] Figure 4 This is a partial exploded view of the wire clamping structure of the charging gun of the first embodiment of the utility model (including wires);

[0028] Figure 5 yes Figure 4 Another angle view of the structure shown;

[0029] Figure 6 This is a diagram showing the positional relationship between the wire, the claw, and the barrier sheet of the charging gun of the first embodiment of the present utility model;

[0030] Figure 7 This is an assembly diagram of the claws and the pressure coil of the charging gun of the first embodiment of the utility model;

[0031] Figure 8 It is a partial exploded view of the wire clamping structure of the charging gun in the embodiment of the utility model;

[0032] Fig. 9 yes Figure 8 Another angle view of the structure shown;

[0033] Fig.10 This is an assembly diagram of the claw and the pressure coil of the charging gun of the second embodiment of the utility model;

[0034] Fig.11 This is a diagram showing the positional relationship between the wire, claw, and barrier of the charging gun of the second embodiment of the present utility model.

[0035] Description of the accompanying drawings: charging gun body 100, charging connector 101, wire 200, protective cover 300, claw 10, first circle body 11, first connecting hole 111, positioning hole 112, first assembly pin 113, claw part 12, hook part 121, pressing coil 20, second circle body 21, second connecting hole 211, positioning column 212, pressing cylinder 22, barrier plate 221, tail cover 30, anti-dropping point 31, inserting guide surface 311, stop surface 312, screw 40, cap part 41, wire sealing plug 50, assembly hole 51, fixing plate 60, second assembly pin 61. DETAILED DESCRIPTION

[0036] Please refer to Figures 1 to 11 As shown, it shows the specific structure of various embodiments of the present utility model.

[0037] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0038] like Figures 1 to 7 As shown, a charging gun includes a charging gun body 100 and a wire 200 connected to the charging gun body 100; the head end of the charging gun body 100 has a charging connector 101, the tail end of the charging gun body 100 has a wire clamping structure, and a protective cover 300 is provided on the charging gun body 100, and the protective cover 300 is detachably covered on the charging connector 101.

[0039] The wire clamping structure includes a clamping claw 10, a pressing coil 20 and a tail cover 30. Usually, the clamping claw 10, the pressing coil 20 and the tail cover 30 are all injection molded parts. Specifically:

[0040] The clamping claw 10 includes a first circle body 11 and a plurality of claws 12 integrally connected to the tail end of the first circle body 11, and the claws 12 are arranged at intervals along the circumferential direction of the tail end of the first circle body 11; the first circle body 11 is provided with a first connection hole 111, and the first circle body 11 is provided with a positioning hole 112. The tail end of the claw 12 has a hook 121 extending radially inward, and the hook 121 protrudes from the inner side of the barrier sheet 221 described below, so that the hook 121 is clamped into the inner surface of the outer surface of the wire 200.

[0041] The pressing coil 20 includes a second circle body 21 and a pressing cylinder 22 integrally connected to the tail end of the second circle body 21, the second circle body 21 is provided with a corresponding second connecting hole 211, the head end of the second circle body 21 extends with a positioning column 212 toward the first circle body 11, and a plurality of barrier plates 221 are radially protruded on the inner ring side surface of the pressing cylinder 22, and the plurality of barrier plates 221 are arranged at intervals along the circumferential direction of the inner ring of the pressing cylinder 22; the head end of the barrier plate 221 extends to the head end surface of the second circle body 21.

[0042] The pressing coil 20 is sleeved on the clamping claw 10, the positioning column 212 extends into the corresponding positioning hole 112, the second circle body 21 is positioned at the tail end of the first circle body 11, and a plurality of the claws 12 are located in the pressing cylinder 22, and the blocking piece 221 is located one by one between two adjacent claws 12, and a screw 40 is provided to pass through the second connection hole 211 and the first connection hole 111 in sequence along the length direction of the wire 200. In this way, when the wire 200 is twisted, the twisting range of the claw 12 is very small, and even because the blocking piece 221 and the claw 12 have high matching accuracy, the gap is extremely small or forms a zero gap match, which avoids the problem that the claw 12 rotates with the wire 200 in a large range, resulting in the problem of force breaking.

[0043] The tail cover 30 is arranged on the tail end of the pressing coil 20, and the tail cover 30 covers the cap 41 of the screw 40. The tail cover 30 is provided with an anti-slipping point 31, and the outer surface of the anti-slipping point 31 has a sleeve guide surface 311 extending from the tail end toward the head end, and the head end of the anti-slipping point 31 has a stop surface 312 to prevent the ring from slipping out toward the tail end. There are a plurality of anti-slipping points 31, for example, more than three, which are arranged along the circumferential spacing. The setting of the anti-slipping points 31 is also conducive to strengthening the structural strength of the tail end of the tail cover 30. The protective cover 300 is connected with a sleeve ring, and the sleeve ring is sleeved from the tail end of the tail cover 30 to the head end of the anti-slipping point 31 along the sleeve guide surface 311, and is restricted by the stop surface 312.

[0044] In addition, a wire sealing plug 50 is provided on the head end side of the first circle body 11 of the clamping claw 10, and a fixing plate 60 is provided on the head end side of the wire sealing plug 50. The wire 200 passes through the tail cover 30, the crimping coil 20, the clamping claw 10, the wire sealing plug 50 and the fixing plate 60 in sequence.

[0045] like Figures 8 to 11 As shown, it shows part of the structure of the second embodiment. The structure of the second embodiment is basically the same as that of the first embodiment, and the main difference is that the hook portion 121 is relatively obviously exposed on the inner side surface of the barrier sheet 221, and the head end of the barrier sheet 221 does not fully extend to the head end surface of the second circle body 21, and a guide arc surface 2211 or a guide inclined surface is provided at the head end of the barrier sheet 221, so that when the pressing coil 20 is sleeved on the claw 10, the barrier sheet 221 can be smoothly inserted into the groove 13 between the two adjacent claws 12, and the assembly is more convenient. In addition, a first assembly pin 113 protrudes from the head end of the first circle body 11 of the claw 10, and a second assembly pin 61 protrudes from the tail end side of the fixing plate 60. The first assembly pin 113 and the second assembly pin 61 are both extended along the length direction of the wire 200, and an assembly hole 51 passing through the head and tail ends is provided on the wire sealing plug 50, so that the first assembly pin 113 and the second assembly pin 61 are respectively embedded and positioned from the tail end and the head end of the assembly hole 51, and the assembly integrity of the tail cover 30, the pressing coil 20, the claw 10, the wire sealing plug 50 and the fixing plate 60 is better. The design focus of the utility model is that it is mainly through the arrangement of the clamping claw 10 and the pressing coil 20, and the inner ring side surface of the pressing cylinder 22 of the pressing coil 20 is radially protruded with a plurality of blocking pieces 221. When the pressing coil 20 is sleeved on the clamping claw 10, the second circle 21 is positioned at the tail end of the first circle 11, and a plurality of claws 12 are located in the pressing cylinder 22, and the blocking pieces 221 are located one by one between two adjacent claws 12. In this way, if the wire 200 is twisted, the torsion range of the claw 12 of the clamping claw 10 becomes very small, and the force is small, which effectively solves the problem of the claw 12 being broken due to excessive force. Moreover, its structural design is ingenious, and the clamping claw 10 and the pressing coil 20 are made separately, which is easy to process and assemble.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A wire clamping structure, characterized in that: It includes a clamping claw and a pressing coil; The clamping claw comprises a first ring body and a plurality of claw parts integrally connected to the tail end of the first ring body, and the claw parts are arranged at intervals along the circumferential direction of the tail end of the first ring body; The pressing coil comprises a second coil body and a pressing cylinder integrally connected to the tail end of the second coil body, a plurality of blocking sheets are radially protruded on the inner ring side surface of the pressing cylinder, and the plurality of blocking sheets are arranged at intervals along the circumferential direction of the inner ring of the pressing cylinder; The pressing coil is sleeved on the clamping claw, the second coil is positioned at the tail end of the first coil, a plurality of the claws are located in the pressing cylinder, and the barrier sheets are correspondingly located between two adjacent claws.

2. A wire clamping structure according to claim 1, characterized in that: The tail end of the claw portion has a hook portion extending radially inwardly, and the hook portion is exposed from the inner side surface of the barrier sheet, so that the hook portion is clamped into the inner side of the outer surface of the wire.

3. A wire clamping structure according to claim 1, characterized in that: The head end of the barrier sheet extends to the head end surface of the second ring body; Alternatively, the head end of the barrier piece does not extend to the head end surface of the second ring body, and the head end of the barrier piece is provided with a guiding arc surface or a guiding inclined surface.

4. The wire clamping structure according to claim 1, characterized in that: The first circle body is provided with a first connection hole, the second circle body is provided with a corresponding second connection hole, and a screw is also provided to sequentially pass through the second connection hole and the first connection hole along the length direction of the wire.

5. A wire clamping structure according to claim 1 or 4, characterized in that: A positioning column is extended from the head end of the second circle body toward the first circle body, and a positioning hole is provided on the first circle body. When the pressing coil is sleeved on the claw, the positioning column extends into the corresponding positioning hole.

6. A wire clamping structure according to claim 4, characterized in that: The tail end of the pressing coil is covered with a tail cover, and the tail cover covers the cap of the screw.

7. A wire clamping structure according to claim 6, characterized in that: The tail cover is provided with an anti-slipping point, the outer surface of which has an insertion guide surface extending from the tail end toward the head end, and the head end of the anti-slipping point has a stop surface that prevents the ring from slipping out toward the tail end.

8. The wire clamping structure according to claim 6, characterized in that: A wire sealing plug is provided on the head end side of the first circle body of the clamping claw, and a fixing plate is provided on the head end side of the wire sealing plug. The wire passes through the tail cover, the crimping coil, the clamping claw, the wire sealing plug and the fixing plate in sequence; and, a first assembly pin protrudes from the head end of the first circle body of the clamping claw, and a second assembly pin protrudes from the tail end side of the fixing plate. An assembly hole passing through the head and tail ends is provided on the wire sealing plug, and the first assembly pin and the second assembly pin are respectively embedded and positioned from the tail end and the head end of the assembly hole.

9. A charging gun, comprising a charging gun body and a wire connected to the charging gun body; the head end of the charging gun body has a charging connector, and the tail end of the charging gun body has a wire clamping structure, characterized in that: The wire clamping structure is a wire clamping structure as claimed in any one of claims 1 to 8.

10. The charging gun according to claim 9, characterized in that: The charging gun body is provided with a protective cover, and the protective cover is detachably covered on the charging connector.

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