Cable joint for charging pile

Abstract

The utility model relates to the field of cable connectors, in particular to a cable connector for a charging pile, which comprises a protection hose, a connector main body, a locking assembly, a fixing piece and a flat gasket sealing ring, and is characterized in that the protection hose sleeves the outside of a cable; the connector body is provided with a first end and a second end which are oppositely arranged in the direction of the central axis of the connector body. The locking assembly is arranged at the first end and is used for locking the protection hose and the cable; the fixing piece is arranged at the second end and is used for fixing the cable on the charging pile box body; the flat gasket sealing ring is provided with two planes which are oppositely arranged in the direction of the central axis, and adhesive layers are arranged on the two planes and used for achieving fixed connection between the fixing piece and the charging pile box body. As the protective hose is sleeved outside the cable, the cable can be prevented from being scratched, damaged or bitten by rats and the like, so that unsafe accidents such as electric leakage and the like are avoided, and the service life of the cable can be prolonged.

Description

Technical Field

[0001] The present application relates to the field of cable joints, and more specifically to a cable joint for a charging pile. Background Art

[0002] Currently, new energy vehicles are developing rapidly, and charging pile facilities are being vigorously built in cities across the country. At present, most of the connectors used in automotive charging piles on the market simply lock the cable, and there is no protection measure for the cable. After charging, users often throw the charging gun on the ground, and the cable is likely to be scratched, damaged, or bitten by mice, which may easily lead to dangerous situations such as electric leakage. Utility Model Content

[0003] The present application provides a cable joint for a charging pile, which can reduce the risk of cable damage.

[0004] The present application provides a cable joint for a charging pile, which is used to connect the charging pile box body and the cable, and includes:

[0005] A protective hose, which is sleeved outside the cable;

[0006] A joint body, which has a first end and a second end oppositely arranged along the central axis thereof;

[0007] A locking assembly, which is arranged at the first end and is used to lock the protective hose and the cable;

[0008] A fixing member, which is arranged at the second end and is used to fix the cable on the charging pile box body; and

[0009] A flat gasket seal, which has two opposite planes along the central axis direction, and adhesive layers are provided on both planes to realize the fixed connection between the fixing member and the charging pile box body.

[0010] In one embodiment, the locking assembly includes a joint mouthpiece, a joint collar, and a locking nut. The joint mouthpiece includes a hollow base body and an insertion part. The insertion part is arranged in the cavity of the base body and is spaced from the cavity wall of the base body; at least part of the structure of the insertion part is inserted into the interior of the protective hose; the joint collar is sleeved outside the insertion part and at least part of the structure is inserted into the cavity of the base body; the locking nut is arranged outside the joint collar and at least part of the structure is sleeved on the first end, and the locking nut is used to lock the joint collar, the joint mouthpiece, and the protective hose.

[0011] In one embodiment, spiral grooves are provided on both the inner wall and the outer wall of the protective hose. The insertion part is matched with the spiral groove on the inner wall, and the joint retainer is matched with the spiral groove on the outer wall.

[0012] In one embodiment, a first stepped surface is provided inside the joint body, and a second stepped surface is provided inside the locking nut. The joint retainer and the joint mouth are arranged between the first stepped surface and the second stepped surface.

[0013] In one embodiment, it further includes an annular locking sleeve. The annular locking sleeve is arranged inside the fixing member and sleeved outside the cable. The annular locking sleeve is used to lock and fix the cable.

[0014] In one embodiment, an annular groove is provided on the outer wall of the annular locking sleeve.

[0015] In one embodiment, a third stepped surface is provided inside the joint body; the annular locking sleeve is arranged between the third stepped surface and the end face of the fixing member.

[0016] In one embodiment, it further includes an annular gasket. The annular gasket is arranged between the third stepped surface and the end face of the annular locking sleeve.

[0017] In one embodiment, the fixing member is provided with a joint end and a fixing end oppositely along the direction of the central axis. The fixing end is connected to the charging pile box body. At least part of the structure of the joint end is inserted inside the joint body and is threadedly connected to the joint body; the cross-section of the fixing end is square; a square installation groove is provided on the fixing end, and the flat gasket seal ring is arranged in the installation groove.

[0018] In one embodiment, it further includes a plurality of connecting pieces. A plurality of fixing holes are provided on both the fixing member and the charging pile box body. The connecting pieces are arranged in the fixing holes to realize the fixed connection between the fixing member and the charging pile box body.

[0019] According to the cable joint for charging pile in the above embodiments, which is used to realize the connection between the charging pile box body and the cable, including a protective hose, a joint body, a locking component, a fixing part and a flat gasket seal. Since the protective hose is sleeved outside the cable to protect the cable, after charging is completed, the protective hose can avoid the cable from being scratched, damaged or bitten by mice, etc., thus avoiding the occurrence of unsafe accidents such as electric leakage, and can also improve the service life of the cable. Since the joint body has a first end and a second end oppositely arranged along the direction of its central axis, the locking component is arranged at the first end, and the locking component is used to lock the protective hose and the cable. The fixing part is arranged at the second end, and at least part of its structure is inserted into the inside of the joint body. The fixing part is used to fix the cable on the charging pile box body, so that the protective hose is locked and fixed outside the cable. At the same time, the cable can also be fixed on the charging pile box body. Since the flat gasket seal has two planes oppositely arranged along the direction of the central axis, and adhesive layers are provided on both planes, it can realize the fixed connection between the fixing part and the charging pile box body, and can also seal the space between the fixing part and the charging pile box body, reducing the entry of external water vapor, impurities, etc. into the charging pile box body from the connection between the fixing part and the charging pile box body to protect the charging pile box body and its internal structure. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the connection between the cable joint for charging pile and the cable in one embodiment;

[0021] Figure 2 It is an exploded schematic structural diagram of the connection between the cable joint for charging pile and the cable in one embodiment;

[0022] Figure 3 It is a cross-sectional view of the connection between the cable joint for charging pile and the cable in one embodiment;

[0023] Figure 4 It is a schematic structural diagram of the flat gasket seal in one embodiment;

[0024] Figure 5 It is a cross-sectional view of the joint body in one embodiment;

[0025] Figure 6 It is a schematic structural diagram of the joint mouth guard in one embodiment;

[0026] Figure 7 It is a cross-sectional view of the connection between the locking component and the joint body in one embodiment;

[0027] Figure 8 It is a schematic structural diagram of the annular locking sleeve in one embodiment;

[0028] Figure 9 It is a schematic structural diagram of the fixing part in one embodiment.

[0029] Wherein: 100, protective hose; 110, spiral groove; 200, joint body; 210, first end; 220, second end; 230, first step surface; 240, third step surface; 300, locking assembly; 310, joint mouth guard; 311, matrix; 3111, flange; 312, insertion part; 320, joint retaining ring; 321, abutting surface; 330, locking nut; 331, second step surface; 400, fixing member; 410, joint end; 420, fixed end; 421, mounting groove; 422, fixing hole; 500, flat gasket seal; 600, annular locking sleeve; 610, annular groove; 700, annular washer; 800, connecting member; A, charging pile box body; B, cable; C, central axis. Detailed implementation mode

[0030] The present application will be further described in detail below in conjunction with the accompanying drawings through specific implementation modes. Similar elements in different implementation modes adopt related similar element numbers. In the following implementation modes, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification to avoid the core part of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and general technical knowledge in the field.

[0031] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various implementation modes, and the operation steps involved in each embodiment can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the specification and drawings are only for clearly describing a certain embodiment, and do not mean to be the necessary composition and / or sequence.

[0032] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. And the "connection" and "coupling" mentioned in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0033] Please refer to Figures 1 to 9, this application provides a cable joint for a charging pile, which is used to connect the charging pile box body A and the cable B. It includes a protective hose 100, a joint body 200, a locking component 300, a fixing component 400 and a flat gasket seal 500. The protective hose 100 is sleeved outside the cable B to protect the cable B. After charging is completed, the protective hose 100 can avoid the cable B from being scratched, damaged or bitten by mice, etc., thus avoiding unsafe accidents such as electric leakage, and can also improve the service life of the cable B; the joint body 200 has a first end 210 and a second end 220 which are oppositely arranged along the direction of its central axis C( Figure 2 and Figure 3 the center line in). The locking component 300 is arranged at the first end 210, and the locking component 300 is used to lock the protective hose 100 and the cable B. The fixing component 400 is arranged at the second end 220, and the fixing component 400 is used to fix the cable B on the charging pile box body A. The flat gasket seal 500 has two relatively arranged planes along the direction of the central axis, and adhesive layers (not shown in the figure) are provided on both planes, which are used to realize the fixed connection between the fixing component 400 and the charging pile box body A, and can also seal the space between the fixing component 400 and the charging pile box body A, reducing the entry of external water vapor, impurities, etc. into the charging pile box body A from the connection between the fixing component 400 and the charging pile box body A to protect the charging pile box body A and its internal structure.

[0034] It should be further noted that a film is pasted on the adhesive layer to protect the adhesive layer, and the film is torn off during use to expose the adhesive layer.

[0035] It can be understood that since the charging pile box body A is generally used outdoors and will be exposed to wind and rain, after a long time, there are defects such as water leakage at the connection. In order to improve the sealing performance of the connection and achieve waterproofing and moisture-proofing at the connection, a sealing structure is provided between the fixing component 400 and the charging pile box body A. The sealing structure of this application is a flat gasket seal 500. The two surfaces of the flat gasket seal 500 are flat surfaces extending along the central axial direction, which are called planes. Different from the existing O-ring seal, the contact area between the flat gasket seal 500 and the fixing component 400 and the charging pile box body A is increased, which can increase friction, avoid the rolling of the flat gasket seal 500 during the installation process, facilitate the installation operation, improve the installation efficiency of the flat gasket seal 500 and the fixing component 400, and also make the installation more stable and the waterproof effect better.

[0036] Please refer to Figure 4, Further, the flat gasket seal 500 is also in a ring structure, with two planes parallel to each other along the direction of the central axis C, and is adhesively connected to the charging pile box A and the fixing member 400. Its size is adapted to the mounting holes at the mounting positions of the charging pile box A and the size of the fixing member 400. The sizes of the mounting holes, the fixing member 400, and the model of the flat gasket seal 500 can be adjusted according to the sizes of different cables B.

[0037] Since adhesive layers are provided on both planes of the flat gasket seal 500, the connection between the flat gasket seal 500 and the charging pile box A and the fixing member 400 can be realized respectively. The flat gasket seal 500 is adhesively fixed on the charging pile box A and the fixing member 400 through the adhesive layers, which can further effectively ensure the realization of the sealing function of the flat gasket seal 500.

[0038] In an embodiment, the protective hose 100 is a metal-clad plastic hose. The inside of the metal-clad plastic hose is made of stainless steel, which has the effects of preventing rat bites, scratches, corrosion, and pressure, equivalent to adding an additional protective measure to prevent damage to the internal cable B. The outer surface of the metal-clad plastic hose is wrapped with a layer of PVC plastic and a fire retardant is added, which has the performance characteristics of fire and water resistance, anti-aging, oil resistance, corrosion resistance, flame retardancy, and insulation, and has a good protection effect on the cable B. The metal-clad plastic hose also has good flexibility. When the staff uses the charging gun, the cable B will not be damaged due to back-and-forth stretching.

[0039] Please refer to Figure 2 and Figure 6, In one embodiment, the locking assembly 300 includes a joint mouth protector 310, a joint retainer ring 320, and a locking nut 330. The joint mouth protector 310 includes a hollow base body 311 and an insertion portion 312. The insertion portion 312 is disposed within the cavity of the base body 311 and is spaced from the cavity wall of the base body 311, forming an installation space (not shown in the figure) between the base body 311 and the insertion portion 312; at least a part of the structure of the insertion portion 312 is inserted inside the protective hose 100; the joint retainer ring 320 is sleeved outside the insertion portion 312 and at least a part of its structure is inserted into the cavity of the base body 311, that is, disposed in the installation space; the locking nut 330 is disposed outside the joint retainer ring 320 and at least a part of its structure is sleeved outside the first end 210. The locking nut 330 is used to lock the joint retainer ring 320, the joint mouth protector 310, and the protective hose 100. The end of the base body 311 near the locking nut 330 has an inclined flange 3111, and the end of the joint retainer ring 320 is provided with an inclined abutting surface 321. The inclined abutting surface 321 can be inserted inside the flange 3111, so that at least a part of the structure of the joint retainer ring 320 is disposed in the installation space between the base body 311 and the insertion portion 312. The outside of the abutting surface 321 also abuts against the joint body 200, so that the joint retainer ring 320, the joint mouth protector 310, and the joint body 200 are closely fitted to achieve the locking of the protective hose 100. During assembly, the protective hose 100 is sleeved on the cable B and inserted into the insertion portion 312. The joint retainer ring 320 is sleeved outside the insertion portion 312 and the protective hose 100, so that a part of the structure of the abutting surface 321 of the joint retainer ring 320 is inserted into the installation space and abuts against the flange 3111 and the first end 210 of the joint body 200. And the protective hose 100 is pressed and fixed by the insertion portion 312 and the joint retainer ring 320. After the locking nut 330 is sleeved on, the locking nut 330 is screwed to fix the joint mouth protector 310 and the joint retainer ring 320 between the joint body 200 and the locking nut 330, and at the same time lock and fix the protective hose 100 and the cable B, and can meet the waterproof grade IPX8 at the same time.

[0040] In one embodiment, spiral grooves 110 are provided on both the inner side wall and the outer side wall of the protective hose 100. The insertion portion 312 is matched with the spiral grooves 110 on the inner side wall, and the joint retainer ring 320 is matched with the spiral grooves 110 on the outer side wall, so as to achieve the pressing and locking of the protective hose 100.

[0041] Please refer to Figure 7 , In one embodiment, a first stepped surface 230 is provided inside the joint body 200, and a second stepped surface 331 is provided inside the locking nut 330. The joint retainer ring 320 and the joint mouth protector 310 are disposed between the first stepped surface 230 and the second stepped surface 331 to define the positions of the joint retainer ring 320 and the joint mouth protector 310.

[0042] In one embodiment, it further includes an annular locking sleeve 600. The annular locking sleeve 600 is arranged inside the fixing member 400 and sleeved outside the cable B. The annular locking sleeve 600 is used to lock and fix the cable B. The annular locking sleeve 600 has elasticity. During the process of connecting the joint body 200 to the fixing member 400, the annular locking sleeve 600 can be deformed to lock the cable B. Based on the elasticity of the annular locking sleeve 600, it can adapt to cables of various sizes, which is beneficial to reducing costs. According to the wire diameter of the cable B, without exceeding the locking upper limit of the joint body 200, only by replacing the annular locking sleeve 600, it can also meet cables B with various different wire diameters.

[0043] In one embodiment, an annular groove 610 is provided on the outer side wall of the annular locking sleeve 600. The setting of the annular groove 610 provides space for the deformation of the annular locking sleeve 600.

[0044] In one embodiment, a third step surface 240 is provided inside the joint body 200; the annular locking sleeve 600 is arranged between the third step surface 240 and the end surface of the fixing member 400. The first step surface 230 and the third step surface 240 are arranged in sequence along the direction of the central axis C, and both the first step surface 230 and the third step surface 240 are substantially perpendicular to the central axis C. Thus, the first step surface 230 can define the joint mouth 310 in the direction of the central axis C, and the third step surface 240 can define the annular locking sleeve 600 in the direction of the central axis C, making the structure of the cable B joint for the charging pile compact and capable of better locking the cable B and protecting the hose 100.

[0045] In one embodiment, it further includes an annular gasket 700. The annular gasket 700 is arranged between the third step surface 240 and the end surface of the annular locking sleeve 600, and can further seal the gap between the annular locking sleeve 600 and the joint body 200.

[0046] In one embodiment, the fixing member 400 is disposed opposite the joint end 410 and the fixing end 420 along the direction of the central axis C. The fixing end 420 is connected to the charging pile box body A, and the joint end 410 is connected to the joint body 200. The joint end 410 and the joint body 200 are connected by at least one of a plugging structure, a clamping structure, a threaded connection structure, or a magnetic attraction structure. It should be noted that the plugging structure is a connection method in which one component is inserted into another component to achieve the connection between the two, and the two are in transitional fit or interference fit, without the need to rely on other structures to achieve the connection. Preferably, the plugging structure is used to achieve the detachable connection between the joint end 410 and the joint body 200. At least a part of the structure of the joint end 410 is inserted into the joint body 200 and abuts against the end face of the annular locking sleeve 600. Inserting a part of the structure of the joint end 410 into the joint body 200 can improve the connection stability and reduce the exposure of the entire joint connection to the external environment, and can reduce the influence of the external environment on the joint. The detachable connection method also facilitates the daily maintenance and repair of the entire joint.

[0047] In one embodiment, a snap connection or a threaded connection can also be designed on the basis of the plug connection. Preferably, the joint end 410 and the joint body 200 are connected by a threaded connection. At least a part of the structure of the joint end 410 is disposed inside the joint body 200. An internal thread is provided on the inner wall of the joint body 200, and an external thread is provided on the outer wall of the joint end 410. By rotating the joint body 200, its connection with the joint end 410 can be achieved. During this process, the joint body 200 also presses the annular locking sleeve 600, thereby realizing the sealing arrangement of the cable B inside the annular locking sleeve 600.

[0048] In order to prevent the entire joint function from failing due to the influence of the external environment, the joint body 200, the locking assembly 300, and the fixing member 400 are all subjected to anti-corrosion treatment. For example, an anti-corrosion material is applied, and the anti-corrosion material can be hard anodized aluminum. The joint body 200, the locking assembly 300, and the fixing member 400 are all made of waterproof materials.

[0049] In one embodiment, the cross-section of the fixing end 420 is square; the fixing end 420 is provided with an annular installation groove 421, and the flat gasket seal 500 is disposed in the installation groove 421, which further facilitates the installation of the flat gasket seal 500 and effectively ensures the sealing effect.

[0050] Please refer to Figure 9, in one embodiment, the fixing member 400 and the charging pile box body A are detachably connected. There are also a plurality of connecting members 800. A plurality of fixing holes 422 are provided on both the fixing member 400 and the charging pile box body A. The connecting member 800 is arranged in the fixing hole 422 to realize the fixed connection between the fixing member 400 and the charging pile box body A. Specifically, the fixing holes 422 are evenly arranged at the fixed end 420 of the fixing member 400. The connecting member 800 is a screw or a bolt. The fixing member 400 is a square flange. In order to make the force evenly distributed, there are 4 connecting members 800, which are evenly arranged at the fixed end 420 of the fixing member 400. The cross-section of the fixed end 420 is square. The structure of the whole joint is simple, the operation is convenient, the materials are easy to obtain, and the cost can be effectively reduced.

[0051] The connection between the cable B and the charging pile box body A is realized through the cooperation of the annular locking sleeve 600, the joint body 200 and the fixing member 400. Since the annular locking sleeve 600, the joint body 200 and the fixing member 400 are all arranged outside the charging pile box body A, different from the traditional locking structure arranged inside the charging pile box body A, the present application does not need to occupy the internal space of the charging pile box body A, can reduce the occupied space of the charging pile box body A, and since the installation and disassembly are both carried out outside the charging pile box body A, the operable space is increased, avoiding the influence of the operation space on the operation efficiency, thereby improving the connection efficiency of the cable B and saving the operation time. At the same time, through the cooperation of the annular locking sleeve 600 and the joint body 200, the cable B can be clamped, and in cooperation with the fixing member 400, the cable B is fixed on the charging pile box body A, effectively improving the connection stability of the cable B. Through the locking assembly 300, the protective hose 100 can be locked and fixed outside the cable B, which can improve the protection of the cable B, extend the service life of the cable B, and avoid the occurrence of unsafe accidents. When disassembling, repairing or replacing, it is only necessary to unscrew the locking nut 330 and the joint body 200 in sequence to remove the cable B and the protective hose 100, and the installation and disassembly are convenient.

[0052] The above uses specific examples to elaborate on the present application, which is only used to help understand the present application and is not intended to limit the present application. For those skilled in the art of the present application, according to the idea of the present application, several simple deductions, deformations or replacements can also be made.

Claims

1. A cable connector for a charging pile, used to realize the connection between the charging pile box body and the cable, characterized in that, Comprising: A protective hose sleeved outside the cable; A joint body having a first end and a second end oppositely arranged along its central axis; A locking assembly disposed at the first end for locking the protective hose and the cable; A fixing member disposed at the second end for fixing the cable to the charging pile box body; And A flat gasket seal having two relatively arranged planes along the direction of the central axis, and adhesive layers are provided on both of the two planes for realizing the fixed connection between the fixing member and the charging pile box body.

2. The cable joint for a charging pile according to claim 1, wherein The locking assembly includes a joint mouthpiece, a joint collar and a locking nut. The joint mouthpiece includes a hollow base body and an insertion part. The insertion part is arranged in the cavity of the base body and is spaced from the cavity wall of the base body; at least part of the structure of the insertion part is inserted into the inside of the protective hose; the joint collar is sleeved outside the insertion part and at least part of the structure is inserted into the cavity of the base body; the locking nut is disposed outside the joint collar and at least part of the structure is sleeved on the first end, and the locking nut is used for locking the joint collar, the joint mouthpiece and the protective hose.

3. The cable joint for a charging pile according to claim 2, wherein Spiral grooves are provided on both the inner side wall and the outer side wall of the protective hose. The insertion part is matched with the spiral groove on the inner side wall, and the joint collar is matched with the spiral groove on the outer side wall.

4. The cable joint for a charging pile according to claim 2, characterized in that, A first step surface is provided inside the joint body, and a second step surface is provided inside the locking nut. The joint collar and the joint mouthpiece are arranged between the first step surface and the second step surface.

5. The cable joint for a charging pile according to claim 1, characterized in that, Also included is an annular locking sleeve disposed inside the fixing member and sleeved outside the cable for locking and fixing the cable.

6. The cable joint for a charging pile according to claim 5, characterized in that, An annular groove is provided on the outer side wall of the annular locking sleeve.

7. The cable joint for a charging pile according to claim 5 or 6, characterized in that, A third step surface is provided inside the joint body; the annular locking sleeve is arranged between the third step surface and the end face of the fixing member.

8. The cable joint for a charging pile according to claim 7, characterized in that, Also included is an annular washer disposed between the third step surface and the end face of the annular locking sleeve.

9. The cable joint for a charging pile according to claim 1, characterized in that, The fixing member has a joint end and a fixing end oppositely arranged along the direction of the central axis. The fixing end is connected to the charging pile box body. At least part of the structure of the joint end is inserted into the inside of the joint body and is threadedly connected to the joint body; the cross section of the fixing end is square; a square installation groove is provided on the fixing end, and the flat gasket seal is disposed in the installation groove.

10. The cable joint for a charging pile according to claim 1, characterized in that, Also included are a plurality of connecting members. A plurality of fixing holes are provided on both the fixing member and the charging pile box body. The connecting members are disposed in the fixing holes for realizing the fixed connection between the fixing member and the charging pile box body.

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