Cable fixing structure and charging gun

Abstract

The utility model discloses a cable fixing structure and a charging gun, the cable fixing structure comprises a housing for a cable to pass through, a cable clamp and a fastener, the cable clamp comprises a base part at least partially arranged in the housing, a plurality of claw parts extending into the housing from one side of the base part, and a cover body at least partially extending out of the housing from the other side of the base part, the cover body is fixedly connected with the shell, the plurality of claw parts are arranged around the cable, and the fastener is arranged on the plurality of claw parts in a sleeving manner and extrudes the plurality of claw parts in the radial direction. According to the utility model, the traditional wire clamp and the rear cover are integrated, the cable fixing structure is simplified, and the assembly is more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of cable fixing technology, specifically relating to a cable fixing structure and a charging gun. Background Technology

[0002] New energy vehicles are attracting more and more consumers due to their advantages such as being green and environmentally friendly, energy-saving and quiet, and not subject to traffic restrictions. New energy electric vehicles are charged through charging stations, which are equipped with charging guns at their output ends for connecting to the car.

[0003] The cable connected to the charging station enters the charging gun through the tail end. When using or fixing the charging gun, the cable will inevitably be pulled and twisted. Therefore, the cable needs to be fixed to prevent it from being dragged and affecting the connection between the charging station and the cable.

[0004] Existing cable fixing structures generally fall into two categories. The first type consists of two semi-circular cable clamps and a back cover. The two cable clamps are joined together and fitted onto the cable to hold and fix it in place. The back cover, fitted onto the cable, is fixedly connected to the tail end of the charging gun, sealing the internal cavity of the charging gun. The second type consists of a cable clamp, a fastener, and a back cover. The cable clamp is a ring-shaped structure with claws. The fastener presses the claws inward from the outside, causing the claws to clamp the cable. The back cover is also fixedly connected to the tail end of the charging gun.

[0005] The two cable fixing structures mentioned above require a large number of parts, have complex assembly steps, are difficult to assemble, and are very inconvenient to assemble.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The purpose of this utility model is to provide a cable fixing structure that solves the problem that existing cable fixing structures are inconvenient to assemble.

[0008] To achieve the above objectives, a specific embodiment of the present invention provides a cable fixing structure, including a housing for cable passage, a cable clamp, and fasteners. The cable clamp includes a base at least partially disposed within the housing, a plurality of claws extending from one side of the base into the housing, and a cover at least partially extending from the other side of the base out of the housing. The cover is fixedly connected to the housing. The plurality of claws are arranged around the cable, and the fasteners are sleeved on the plurality of claws and radially press the plurality of claws.

[0009] In one or more embodiments of this utility model, the cable fixing structure further includes a sealing ring disposed inside the housing for the cable to pass through, the sealing ring being disposed on the side of the fastener away from the cable clamp.

[0010] In one or more embodiments of this utility model, a radially protruding first stop protrusion is provided on the inner wall of the housing, and the side of the sealing ring away from the fastener abuts against the first stop protrusion along the axial direction of the sealing ring.

[0011] In one or more embodiments of this utility model, a radially recessed stop groove is provided on the inner wall of the housing, one side of the stop groove penetrates the outer wall of the housing along the axial direction of the fastener, and a second stop protrusion extending into the stop groove is provided on the circumferential outer wall of the base.

[0012] In one or more embodiments of this utility model, a radially recessed stop groove is provided on the inner wall of the housing, one side of the stop groove penetrates the outer wall of the housing along the axial direction of the fastener, and a third stop protrusion extending into the stop groove is provided on the circumferential outer wall of the fastener.

[0013] In one or more embodiments of this utility model, the side of the third stop protrusion away from the wire clamp abuts against the groove wall of the stop groove along the axial direction of the fastener.

[0014] In one or more embodiments of this utility model, the fastener has an insertion portion extending toward the sealing ring on the side near the sealing ring, and the sealing ring has a slot for the insertion portion to be inserted on the side near the fastener.

[0015] In one or more embodiments of this utility model, a radially protruding connecting portion is provided on the inner wall of the housing, and the cable fixing structure further includes a bolt that passes through the cover and is threaded into the connecting portion.

[0016] In one or more embodiments of this utility model, a first clearance groove for the clearance connection portion is provided on the circumferential outer wall of the base, and the first clearance groove penetrates the side walls on both sides of the base along the axial direction of the base.

[0017] In one or more embodiments of this utility model, a second clearance groove is provided on the circumferential outer wall of the fastener to avoid the connection portion, and the second clearance groove passes through the side walls on both sides of the fastener along the axial direction of the fastener.

[0018] In another aspect, this utility model also provides a charging gun, which includes the aforementioned cable fixing structure.

[0019] Compared with the existing technology, this utility model integrates the traditional wire clip and back cover into one piece, which simplifies the cable fixing structure and makes assembly more convenient. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the charging gun in Embodiment 1 of this utility model;

[0022] Figure 2 This is a diagram showing the internal structure of the charging gun in Embodiment 1 of this utility model;

[0023] Figure 3 This is an exploded view of the cable fixing structure in Embodiment 1 of this utility model;

[0024] Figure 4 This is a cross-sectional view of the cable fixing structure in Embodiment 1 of this utility model;

[0025] Figure 5 This is a diagram showing the internal structure of the shell in Embodiment 1 of this utility model.

[0026] Explanation of main reference numerals: 1. Housing, 101. First stop protrusion, 102. Stop groove, 1021. Stop surface, 103. Connecting part, 1031. Threaded hole, 2. Cable, 3. Cable clamp, 31. Base, 32. Claw part, 33. Cover, 301. Second stop protrusion, 302. First clearance groove, 4. Fastener, 41. Insertion part, 401. Third stop protrusion, 402. Second clearance groove, 5. Sealing ring, 501. Slot, 502. Third clearance groove, 6. Bolt. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] In the description of this utility model, it should be understood that the terms "front", "rear", "head", "tail", "top wall", "bottom wall", "top", "bottom", "above", "below", "radial", "circumferential", "axial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, in the description of this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In one embodiment, reference is made to Figures 1 to 5 As shown, this utility model provides a cable fixing structure, which includes a housing 1, a wire clamp 3, a fastener 4, and a sealing ring 5. The housing 1, wire clamp 3, fastener 4, and sealing ring 5 are all for the cable 2 to pass through. The wire clamp 3 and sealing ring 5 are located on opposite sides of the fastener 4. The wire clamp 3 is at least partially located inside the housing 1, and the fastener 4 and sealing ring 5 are located inside the housing. The wire clamp 3 includes an integrally connected base 31, multiple claws 32, and a cover 33. The multiple claws 32 and the cover 33 are respectively disposed on both sides of the base 31 along the axial direction of the base 31. The base 31 is at least partially located inside the housing 1, the multiple claws 32 are located inside the housing 1, and the cover 33 is at least partially located outside the housing 1 and fixedly connected to it. The cable 2 passes sequentially through the cover 33 and the base 31, and passes between the multiple claws 32, so that the multiple claws 32 surround the cable 2. Multiple claws 32 are inserted into the inside of the fastener 4, and the fastener 4 presses the multiple claws 32 radially, causing the multiple claws 32 to press inward and fix the cable 2.

[0031] Reference Figures 3 to 5 As shown, the wire clamp 3, fastener 4 and sealing ring 5 are arranged sequentially along the cable 2. In order to fix the axial position of the wire clamp 3, fastener 4 and sealing ring 5 and prevent the wire clamp 3, fastener 4 and sealing ring 5 from moving along their axial direction, a radially protruding first stop protrusion 101 is provided on the inner wall of the housing 1. The side of the sealing ring 5 away from the fastener 4 abuts against the first stop protrusion 101 along the axial direction of the sealing ring 5.

[0032] Furthermore, on the opposite side of the first stop protrusion 101, the cover 33 is fixedly connected to the housing 1, restricting the axial movement of the wire clamp 3, fastener 4, and sealing ring 5 from the other side.

[0033] In addition, the first stop protrusion 101 can also play a positioning role when installing the sealing ring 5. When the sealing ring 5 abuts against the first stop protrusion 101 along its axial direction, the sealing ring 5 can no longer move along its axial direction, and the installer can know at this time that the sealing ring 5 has been installed in place.

[0034] Reference Figures 3 to 5 As shown, the base 31 of the wire clamp 3 is provided with a second stop protrusion 301 on its outer circumferential wall, and the inner wall of the housing 1 is provided with a radially recessed stop groove 102. The stop groove 102 is provided on the inner wall of the housing 1, and one side of the stop groove 102 penetrates the outer wall of the housing 1 along the axial direction of the fastener 4. The second stop protrusion 301 extends into the stop groove 102 in the radial direction. After the second stop protrusion 301 and the stop groove 102 are combined, the wire clamp 3 can be restricted from rotating around its central axis.

[0035] Furthermore, multiple second stop protrusions 301 are provided and are arranged around the base 31 of the wire clamp 3.

[0036] Reference Figures 3 to 5 As shown, on a plane perpendicular to the central axis of the clamp 3, the area of ​​the vertical projection of the base 31 is smaller than the area of ​​the vertical projection of the cover 33. The base 31 and the cover 33 together form a stepped structure, and the side of the cover 33 near the base 31 abuts against the outer surface of the shell 1.

[0037] Furthermore, in order to facilitate fixing the wire clamp 3 to the housing 1, the wire clamp 3 and the housing 1 can be connected by a threaded connection.

[0038] Specifically, refer to Figure 4 and Figure 5 As shown, the inner wall of the housing 1 is provided with a radially protruding connecting part 103, and the connecting part 103 is provided with a threaded hole 1031. The bolt 6 passes through the cover 33 from the side away from the base 31 and extends into the housing 1 to the threaded hole 1031 on the connecting part 103, and then is threadedly connected to the connecting part 103 to fix the housing 1 and the cover 33 together.

[0039] Furthermore, to facilitate the insertion of the base 31 of the wire clamp 3 into the housing 1, a first clearance groove 302 for avoiding the connecting part 103 is provided on the circumferential outer wall of the base 31. The first clearance groove 302 extends through the side walls on both sides of the base 31 along the axial direction, and the number and distribution of the first clearance grooves 302 are adapted to the connecting part 103. When inserting the wire clamp 3 into the housing 1, each first clearance groove 302 must be aligned with its corresponding connecting part 103.

[0040] Furthermore, after the mounting part is inserted into the first clearance groove 302, it can further restrict the wire clamp 3 from rotating around its central axis.

[0041] Preferably, the side of the connecting portion 103 away from the inner wall of the housing 1 is constructed as an arc surface, which is equivalent to the connecting portion 103 being constructed as a cylindrical structure or a similar cylindrical structure.

[0042] Reference Figures 3 to 5 As shown, the fastener 4 has a third stop protrusion 401 extending into the stop groove 102 on its circumferential outer wall. The radial protrusion direction and axial extension direction of the third stop protrusion 401 are consistent with those of the second stop protrusion 301. The third stop protrusion 401 extends into the stop groove 102 in the radial direction. After the third stop protrusion 401 is engaged with the stop groove 102, it can restrict the fastener 4 from rotating around its central axis.

[0043] The third stop protrusion 401, on the side away from the clamp 3, abuts against the groove wall of the stop groove 102 along the axial direction of the fastener 4. The groove wall of the stop groove 102 forms a stop surface 1021, which is used to axially limit the fastener 4 and prevent the fastener 4 from excessively compressing the sealing ring 5.

[0044] Furthermore, the stop surface 1021 can also serve as a positioning surface when the fastener 4 is installed. When the third stop protrusion 401 abuts against the stop surface 1021, the fastener 4 can no longer move along its axial direction, and the installer can then know that the fastener 4 has been installed in place.

[0045] Furthermore, multiple third stop protrusions 401 are provided and are arranged around the fastener 4. The number of third stop protrusions 401 may be the same as or different from the number of second stop protrusions 301, but regardless of the number, the second stop protrusions 301 and the third stop protrusions 401 at each position should be aligned with the stop groove 102.

[0046] Reference Figure 3 and Figure 5 As shown, a second clearance groove 402 is provided on the circumferential outer wall of the fastener 4. The structure of the second clearance groove 402 is similar to that of the first clearance groove 302. The second clearance groove 402 penetrates the side walls on both sides of the fastener 4 along the axial direction of the fastener 4. The number and distribution position of the second clearance groove 402 are adapted to the connecting part 103.

[0047] Furthermore, after the mounting part is inserted into the second clearance groove 402, it can further restrict the fastener 4 from rotating around its central axis.

[0048] Reference Figure 3As shown, the fastener 4 has an insertion part 41 extending toward the sealing ring 5 on the side near the sealing ring 5, and the sealing ring 5 has a slot 501 for the insertion part 41 to be inserted on the side near the fastener 4. When the insertion part 41 is inserted into the slot 501, the fastener 4 and the sealing ring 5 are essentially connected as one unit. Since the fastener 4 is provided with a third stop protrusion 401 and a second clearance groove 402 that can restrict its rotation, the sealing ring 5 is also restricted to rotate along its central axis.

[0049] Furthermore, a third clearance groove 502 is provided on the circumferential outer wall of the sealing ring 5. The structure of the third clearance groove 502 is similar to that of the first clearance groove 302 and the second clearance groove 402. The third clearance groove 502 penetrates the side walls on both sides of the sealing ring 5 along the axial direction of the sealing ring 5. The number and distribution position of the third clearance groove 502 are adapted to the connecting part 103.

[0050] Reference Figure 3 As shown, multiple insertion parts 41 and slots 501 are provided, and the insertion part 41 is constructed as a columnar structure.

[0051] In addition, the shape and size of the slot 501 may or may not be compatible with the shape and size of the plug part 41, as long as the plug part 41 can be inserted into the slot 501.

[0052] In one embodiment, reference is made to Figure 1 and Figure 2 As shown, this utility model also provides a charging gun, which includes the aforementioned cable fixing structure. The cable fixing structure can be located at the tail end or other parts of the charging gun.

[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cable fixing structure, characterized in that, The device includes a housing (1) through which a cable (2) passes, a clamp (3) and a fastener (4). The clamp (3) includes a base (31) at least partially disposed within the housing (1), a plurality of claws (32) extending from one side of the base (31) into the housing (1), and a cover (33) at least partially extending from the other side of the base (31) out of the housing (1). The cover (33) is fixedly connected to the housing (1). The plurality of claws (32) are arranged around the cable (2). The fastener (4) is sleeved on the plurality of claws (32) and radially presses the plurality of claws (32).

2. The cable fixing structure according to claim 1, characterized in that, The cable fixing structure also includes a sealing ring (5) disposed inside the housing (1) for the cable (2) to pass through, the sealing ring (5) being disposed on the side of the fastener (4) away from the wire clamp (3).

3. The cable fixing structure according to claim 2, characterized in that, The inner wall of the housing (1) is provided with a radially protruding first stop protrusion (101), and the side of the sealing ring (5) away from the fastener (4) abuts against the first stop protrusion (101) along the axial direction of the sealing ring (5).

4. The cable fixing structure according to claim 1, characterized in that, The inner wall of the housing (1) is provided with a radially recessed stop groove (102), one side of the stop groove (102) penetrates the outer wall of the housing (1) along the axial direction of the fastener (4), and the circumferential outer wall of the base (31) is provided with a second stop protrusion (301) extending into the stop groove (102).

5. The cable fixing structure according to claim 1, characterized in that, The inner wall of the housing (1) is provided with a radially recessed stop groove (102). One side of the stop groove (102) penetrates the outer wall of the housing (1) along the axial direction of the fastener (4). The outer wall of the fastener (4) is provided with a third stop protrusion (401) extending into the stop groove (102).

6. The cable fixing structure according to claim 5, characterized in that, The third stop protrusion (401) abuts against the groove wall of the stop groove (102) along the axial direction of the fastener (4) on the side away from the wire clamp (3).

7. The cable fixing structure according to claim 2, characterized in that, The fastener (4) has a plug portion (41) extending toward the sealing ring (5) on the side near the sealing ring (5), and the sealing ring (5) has a slot (501) for the plug portion (41) to be inserted on the side near the fastener (4).

8. The cable fixing structure according to claim 1, characterized in that, The inner wall of the housing (1) is provided with a radially protruding connecting part (103), and the cable fixing structure also includes a bolt (6) that passes through the cover (33) and is threaded into the connecting part (103).

9. The cable fixing structure according to claim 8, characterized in that, The base (31) has a first clearance groove (302) for the clearance connection portion (103) on its circumferential outer wall. The first clearance groove (302) penetrates the side walls on both sides of the base (31) along the axial direction of the base (31); and / or, The fastener (4) has a second clearance groove (402) for the clearance connection part (103) on its circumferential outer wall. The second clearance groove (402) passes through the side walls on both sides of the fastener (4) along the axial direction of the fastener (4).

10. A charging gun, characterized in that, Includes the cable fixing structure as described in any one of claims 1 to 9.

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