Fixing structure and fixing method for direct-current charging gun cable and charging gun

Abstract

The invention discloses a direct current charging gun cable fixing structure and method and a charging gun, and relates to the technical field of electric automobile direct current charging guns, the direct current charging gun cable fixing structure comprises a semicircular first cable clamp and a semicircular second cable clamp, the first cable clamp is provided with a positioning hole, and the second cable clamp is provided with a positioning hole; a positioning column matched with the positioning hole is arranged on the second wire clamp; the first wire clamp is further provided with a locking hole, the second wire clamp is provided with a first threaded hole matched with the locking hole, and the locking hole and the first threaded hole are fixedly connected through a first locking assembly. The first wire clamp is provided with a second threaded hole, and the second threaded hole is used for passing through a screw column on a shell at the tail part of the charging gun and is fixed with the screw column through a second locking assembly. The second wire clamp is further provided with a protruding column used for being connected with a decorative cover of the charging gun in a clamped mode and a protruding check block used for being matched with a notch in the wall of a shell at the tail of the charging gun. According to the charging gun, the firm and reliable fixing requirement is met, the first wire clamp and the second wire clamp are both arranged in the charging gun tail shell, electroplating is not needed, and the cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of direct current charging guns for electric vehicles, and in particular to a fixing structure and a fixing method for a direct current charging gun cable and a charging gun. Background Art

[0002] With the development of the electric vehicle industry, the field of electric vehicle charging has also developed rapidly. People have higher and higher requirements for charging products, and they need to meet the needs of fast charging. The way the cable is fixed at the end of the charging gun is directly related to the stability of the connection between the cable and the charging gun. The cable of the traditional charging gun is fixed by adding two clips at the end of the charging gun, which not only fails to meet the needs of firm and reliable fixing, but also affects the integrity of the entire charging gun product. Because it is exposed, electroplating is usually required. The cost is high and it is not environmentally friendly. Summary of the invention

[0003] The purpose of the present invention is to provide a fixing structure, a fixing method and a charging gun for a DC charging gun cable, so as to solve the problem that the cable of the charging gun in the prior art is fixed by adding two clips at the tail of the charging gun, which cannot meet the requirements of firm and reliable fixing and requires electroplating with high cost and is not environmentally friendly.

[0004] The present invention solves the above problems through the following technical solutions:

[0005] A fixing structure for a DC charging gun cable, comprising a semi-annular first wire clamp and a second wire clamp, the first wire clamp being provided with a positioning hole, and the second wire clamp being provided with a positioning column matching the positioning hole; the first wire clamp is also provided with a locking hole, and the second wire clamp is provided with a first threaded hole matching the locking hole, and the locking hole and the first threaded hole are fixedly connected by a first locking assembly; the first wire clamp is provided with a second threaded hole, and the second threaded hole is used to pass through a screw column on a rear shell of the charging gun and be fixed to the screw column through a second locking assembly; the second wire clamp is also provided with a raised column for clamping with a decorative cover of the charging gun and a raised stopper for matching with a notch on the wall of the rear shell of the charging gun.

[0006] Furthermore, the first locking assembly is a machine screw.

[0007] Furthermore, the second locking assembly is a self-tapping screw.

[0008] Furthermore, the inner sides of the first wire clamp and the second wire clamp are tooth-shaped.

[0009] Furthermore, the first wire clamp and the second wire clamp are made of metal material.

[0010] Furthermore, the first wire clamp and the second wire clamp are made of zinc alloy or aluminum alloy through die-casting and sandblasting.

[0011] A DC charging gun includes a fixing structure of a DC charging gun cable as described above.

[0012] A method for fixing a DC charging gun cable, comprising:

[0013] Step S1, installing the first wire clamp to the rear housing of the charging gun along the screw column on the rear housing of the charging gun, and fixing the first wire clamp to the screw column using a second locking assembly;

[0014] Step S2, inserting the cable into the position of the rear housing of the charging gun above the first wire clamp;

[0015] Step S3, installing the second wire clamp along the radial direction of the rear housing of the charging gun, inserting the positioning column on the second wire clamp into the positioning hole on the first wire clamp, and fixing the first threaded hole of the second wire clamp and the locking hole of the first wire clamp with the first locking assembly, and clamping the cable;

[0016] Step S4, insert the decorative cover of the charging gun along the raised column on the second wire clamp and clamp it with the rear shell of the charging gun; the raised stopper on the second wire clamp is blocked on the notch of the rear shell wall of the charging gun;

[0017] Step S5: The tail cover inserted into the cable is fixed to the rear housing of the charging gun by using the third locking assembly to complete the assembly. The tail cover contains a wire sealing body and a wire protection sleeve.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] (1) The present invention provides a fixing structure for a DC charging gun cable, which not only meets the requirements of firm and reliable fixing, but also does not require electroplating because the first wire clamp and the second wire clamp are both inside the rear shell of the charging gun, thus saving costs.

[0020] (2) The charging gun cable fixing method provided by the present invention not only meets the requirements of firm and reliable fixing and good production and assembly process, but also takes into account the integrity of the entire product, achieves higher quality appearance requirements, and can also reduce costs.

[0021] (3) In the present invention, the first wire clamp is installed along the two existing screw columns 32 on the rear shell of the charging gun to fix the tail cover. During the assembly process and after installation, the first wire clamp will not move freely in other directions.

[0022] (4) In the present invention, since the cable is completely fixed to the wire clamp and the housing inside, there is no need to use a tail cover to increase the fixing force. Therefore, the tail cover and the fixing screw will not bear any pulling force and can be matched with clearance. There is no need to strengthen the design of the tail cover and the fixing screw, thereby reducing costs.

[0023] (5) The second wire clamp in the present invention has two protruding columns, which are mounted on the decorative cover. The purpose is to transfer the pulling force of the cable to the entire charging gun housing, avoiding the axial fixing screws from bearing the pulling force of the cable entirely, reducing the requirements for the screws and screw columns, increasing the fixing strength, and improving reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the positions of the first wire clamp and the rear shell of the charging gun in the present invention;

[0025] Figure 2 It is a schematic diagram of the structure and installation position of the second wire clamp in the present invention;

[0026] Figure 3 is a schematic diagram of the matching of the first wire clamp and the second wire clamp;

[0027] Figure 4 is a schematic diagram of the installation of the second wire clamp;

[0028] Figure 5 This is a schematic diagram of the installation of the tail cover, the rear shell of the charging gun, and the second wire clamp;

[0029] Figure 6 This is a diagram showing the installation of the tail cover;

[0030] Figure 7 This is the assembly diagram of the tail cover;

[0031] Figure 8 A cross-sectional view of the installation positions of the first wire clamp, the second wire clamp and the rear housing of the charging gun;

[0032] Fig. 9 This is a schematic diagram of the charging gun cable assembly.

[0033] Among them, 1-first wire clamp; 11-positioning hole; 12-locking hole; 13-second threaded hole; 2-second wire clamp; 21-positioning column; 22-raised block; 23-raised column; 24-first threaded hole; 3-charging gun tail shell; 31-charging gun tail shell wall; 32-screw column; 4-cable; 5-sealing body; 6-self-tapping screw; 7-machine screw; 8-decorative cover; 9-tail cover; 10-wire cover. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0035] Embodiment 1:

[0036] Combined with Figure 1-9As shown, a fixing structure of a DC charging gun cable includes a semi-circular first wire clamp 1 and a second wire clamp 2, wherein the first wire clamp 1 is provided with a positioning hole 11, and the second wire clamp 2 is provided with a positioning column 21 matching the positioning hole 11; the first wire clamp 1 is also provided with a locking hole 12, and the second wire clamp 2 is provided with a first threaded hole 24 matching the locking hole 12, and the locking hole 12 and the first threaded hole 24 are fixedly connected by a first locking assembly; the first wire clamp 1 is provided with a second threaded hole 13, and the second threaded hole 13 is used to pass through a screw column 32 on the rear housing 3 of the charging gun and is fixed to the screw column 32 by a second locking assembly; the second wire clamp 2 is also provided with a raised column 23 for clamping with the decorative cover 8 of the charging gun and a raised stopper 22 for matching the notch on the rear housing wall 31 of the charging gun. The decorative cover 8 is designed to be located above the charging gun, which not only ensures the strength of the entire rear, but also retains the integrity of the lower position that can be touched by hand.

[0037] Furthermore, the first locking component is a machine screw 7.

[0038] Furthermore, the second locking component is a self-tapping screw 6.

[0039] Furthermore, the inner sides of the first wire clamp 1 and the second wire clamp 2 are tooth-shaped.

[0040] Furthermore, the first wire clamp 1 and the second wire clamp 2 are made of metal material.

[0041] Furthermore, the first wire clamp 1 and the second wire clamp 2 are made of zinc alloy or aluminum alloy through die-casting and sandblasting.

[0042] Since the first wire clamp 1 and the second wire clamp 2 need to maintain rigidity, they are usually made of metal materials. Mass production is usually made of aluminum alloy or zinc alloy die-casting. If exposed to the outside, high-level surface treatment is required, usually electroplating and oxidation, which is not environmentally friendly and has high costs. The two wire clamps of the present invention are hidden inside the shell, and do not need to be subjected to high-level surface treatment such as electroplating. Zinc alloy die-casting and sandblasting can be used, which is both environmentally friendly and reduces costs.

[0043] Embodiment 2:

[0044] A DC charging gun includes a fixing structure for a DC charging gun cable as described in Example 1.

[0045] Embodiment 3:

[0046] Combined with Figure 1-9 As shown, a method for fixing a DC charging gun cable includes:

[0047] Step S1, install the first wire clamp 1 into the charging gun tail housing 3 along the screw column 32 on the charging gun tail housing 3, and use the second locking component (such as two self-tapping screws 6) to fix the first wire clamp 1 and the screw column 32 along the axial direction of the charging gun tail housing 3; when the first wire clamp 1 is installed into the charging gun tail housing 3, the first wire clamp 1 is installed along the two existing screw columns 32 on the charging gun tail housing 3 that fix the tail cover. During and after the installation, the first wire clamp 1 will not move freely in other directions, the limit is accurate and reliable, and the operation is convenient;

[0048] Step S2, insert the cable 4 into the position of the charging gun tail housing 3 above the first wire clamp 1;

[0049] Step S3, after the cable 4 is loaded, the second cable clamp 2 is installed at the opening of the charging gun tail housing 3 at the corresponding position of the cable clamp along the radial direction of the charging gun tail housing 3, and the positioning column 21 on the second cable clamp 2 is inserted into the positioning hole 11 on the first cable clamp 1. The first locking component (such as two machine screws 7) is used to fix the first threaded hole 24 of the second cable clamp 2 and the locking hole 12 of the first cable clamp 1 along the axial direction perpendicular to the charging gun tail housing 3, and the cable 4 is clamped;

[0050] Step S4, insert the decorative cover 8 of the charging gun along the raised column 23 on the second wire clamp 2 and lock it with the charging gun tail shell 3 through a lock; the raised block 22 on the second wire clamp 2 is blocked on the notch of the charging gun tail shell wall of the charging gun tail shell 3; the assembled second wire clamp 2 has a protruding block 22 blocked on the notch of the charging gun tail shell wall 31 of the charging gun tail shell 3, and the second wire clamp 2 also has two raised columns 23, which are sleeved on the decorative cover 8, the purpose is to transfer the pulling force of the cable 4 to the entire charging gun shell, avoid the axial fixing screws from bearing the pulling force of the cable completely, reduce the requirements for screws and screw columns, increase the fixing strength, and improve reliability.

[0051] Step S5: The tail cover 9 inserted into the cable 4 is fixed to the charging gun tail housing 3 by using the third locking assembly, and the tail cover 9 contains the sealing body 5 and the wire protection sleeve 10, and the assembly is completed. The third locking assembly is 4 self-tapping screws.

[0052] Since the cable is completely fixed to the wire clamp and the housing, there is no need to use the tail cover 9 to increase the fixing force, so the tail cover 9 and the fixing screw will not bear any pulling force, and a clearance fit can be used, and there is no need to strengthen the tail cover 9 and the fixing screw, thereby reducing costs. In addition, the first wire clamp 1 and the second wire clamp 2 are hidden inside the housing, and no surface treatment such as electroplating is required, and die-cast zinc alloy sandblasting is sufficient.

[0053] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, the above embodiments are only preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and embodiments, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A fixing structure for a DC charging gun cable, characterized in that: The invention comprises a semi-circular first wire clamp (1) and a second wire clamp (2), wherein the first wire clamp (1) is provided with a positioning hole (11), and the second wire clamp (2) is provided with a positioning column (21) matching the positioning hole (11); the first wire clamp (1) is also provided with a locking hole (12), and the second wire clamp (2) is provided with a first threaded hole (24) matching the locking hole (12), and the locking hole (12) and the first threaded hole (24) are fixedly connected by a first locking assembly; the first wire clamp (1) is provided with a second threaded hole (13), and the second threaded hole (13) is used to pass through a screw column (32) on a charging gun rear housing (3) and is fixed to the screw column (32) by a second locking assembly; the second wire clamp (2) is also provided with a protruding column (23) for clamping with a decorative cover (8) of the charging gun and a protruding stopper (22) for matching with a notch on a charging gun rear housing wall (31).

2. A fixing structure for a DC charging gun cable according to claim 1, characterized in that: The first locking component is a machine screw (7).

3. A fixing structure for a DC charging gun cable according to claim 1, characterized in that: The second locking component is a self-tapping screw (6).

4. A fixing structure for a DC charging gun cable according to claim 1, characterized in that: The inner sides of the first wire clamp (1) and the second wire clamp (2) are tooth-shaped.

5. A fixing structure for a DC charging gun cable according to claim 1, characterized in that: The first wire clamp (1) and the second wire clamp (2) are made of metal material.

6. A fixing structure for a DC charging gun cable according to claim 5, characterized in that: The first wire clamp (1) and the second wire clamp (2) are made of zinc alloy or aluminum alloy die-casting and sandblasting.

7. A DC charging gun, characterized in that: A fixing structure for a DC charging gun cable comprising the structure as described in any one of claims 1 to 6.

8. A method for fixing a DC charging gun cable, characterized in that: include: Step S1, installing the first wire clamp (1) to the charging gun rear housing (3) along the screw column (32) on the charging gun rear housing (3), and using a second locking assembly to fix the first wire clamp (1) and the screw column (32); Step S2, inserting the cable (4) into the position of the charging gun rear housing (3) above the first wire clamp (1); Step S3, installing the second wire clamp (2) along the radial direction of the rear housing (3) of the charging gun, inserting the positioning column (21) on the second wire clamp (2) into the positioning hole (11) on the first wire clamp (1), and fixing the first threaded hole (24) of the second wire clamp (2) and the locking hole (12) of the first wire clamp (1) with the first locking assembly, and clamping the cable (4); Step S4, insert the decorative cover (8) of the charging gun along the raised column (23) on the second wire clamp (2) and engage it with the charging gun rear shell (3); the raised stopper (22) on the second wire clamp (2) is blocked on the notch of the charging gun rear shell wall of the charging gun rear shell (3); Step S5: fix the tail cover (9) inserted into the cable (4) to the charging gun tail housing (3) using a third locking assembly to complete the assembly.

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