Fixing terminal for copper column in automobile charging gun and processing method of fixing terminal

Abstract

The invention discloses a fixed terminal for a copper column in an automobile charging gun, which comprises a terminal body, the terminal body is provided with the copper column, and the terminal body is provided with a combined structure; the terminal body comprises a mounting section, a limiting section and a fixing section, the mounting section, the limiting section and the fixing section are fixedly connected in sequence from left to right, and the combined structure is arranged on the mounting section. By means of the mode, according to the fixing terminal for the copper column in the automobile charging gun and the machining method of the fixing terminal, the fixing terminal machined through the machining method is of a combined structure, the copper column or the fixing terminal can be singly replaced, and the maintenance cost is greatly reduced.

Description

Technical Field

[0001] The invention belongs to the field of automobile manufacturing, and in particular relates to a fixing terminal for a copper column in an automobile charging gun and a processing method thereof. Background Art

[0002] New energy vehicles refer to vehicles that use non-traditional fuels as a power source, usually including electric vehicles, hybrid vehicles, hydrogen fuel cell vehicles, etc. Electric vehicles are completely powered by batteries and driven by electric motors. Charging methods include home charging piles and public charging stations.

[0003] The copper column inside the new energy vehicle charging gun is a conductive component whose main function is to transmit current. It has the characteristics of high conductivity, corrosion resistance, good mechanical properties, high temperature resistance and oxidation resistance.

[0004] In existing charging guns, the copper column is fixed in an insulating kit, common materials of which are plastic or resin, to prevent short circuit and poor contact. The insulating kit is directly processed on the outside of the copper column during production. When the terminal or the copper column is damaged, they need to be replaced together, which greatly increases the maintenance cost. Summary of the invention

[0005] The main technical problem solved by the present invention is to provide a fixed terminal for a copper column in a car charging gun and a processing method thereof, which can replace the copper column or the fixed terminal alone.

[0006] In order to solve the above technical problems, a technical solution adopted by the present invention is: providing a fixing terminal for a copper column in a car charging gun, comprising a terminal body, a copper column is installed on the terminal body, and a combined structure is provided on the terminal body;

[0007] The terminal body comprises an installation section, a limiting section and a fixing section. The installation section, the limiting section and the fixing section are fixedly connected in sequence from left to right, and the combined structure is arranged on the installation section.

[0008] In a preferred embodiment of the present invention, the combined structure includes a mounting hole, the mounting hole is opened on the left side of the mounting section, the side wall of the mounting hole is provided with a plurality of shrinkage grooves penetrating the side wall of the mounting hole, and the plurality of shrinkage grooves are arranged in an array with the axis of the mounting hole as the center of the circle on the side wall of the mounting hole.

[0009] In a preferred embodiment of the present invention, a locking groove is provided on the outer side of the installation hole, and a locking ring is installed in the locking groove after shrinking.

[0010] In a preferred embodiment of the present invention, a limiting groove is provided on the outer side of the limiting section, and the limiting groove cooperates with a mounting plate on the charging gun.

[0011] In a preferred embodiment of the present invention, a fixing hole is provided on the right side of the fixing section, and the fixing hole is connected to the fixing structure of the charging gun.

[0012] In a preferred embodiment of the present invention, a plated hole is provided on the side wall of the mounting hole and the side wall of the fixing hole between two adjacent shrinkage grooves.

[0013] In order to solve the above technical problems, a processing method for a fixed terminal of a copper column in a car charging gun is also provided, and the specific steps include:

[0014] 1) Fixed segment processing: firstly, drilling a hole on the right side of the blank to control the length to obtain the fixed hole, and then turning the outer circle of the right side to control the length to obtain the fixed segment;

[0015] 2) Processing of the limiting segment: continuing to turn the outer circle of the blank connected to the fixed segment, controlling the length, obtaining the limiting segment, and slotting at an appropriate position of the limiting segment, controlling the length and inner diameter of the slot, obtaining the limiting slot;

[0016] 3) Processing of the installation section: Continue turning the outer circle of the blank connected to the limiting section to control the length to obtain the installation section, first drill the left side of the installation section to control the length to obtain the installation hole, then perform milling of the side wall of the installation hole in the horizontal direction to control the length to obtain a plurality of the shrinking grooves, and finally perform milling of the side wall of the installation hole in the vertical direction to control the groove width and inner diameter, thereby manufacturing the terminal body;

[0017] 4) Electroplating test: The terminal body is tested after electroplating, and a plug-in test is performed on the terminal body after electroplating using a standard plug-in test.

[0018] In a preferred embodiment of the present invention, after the processing of the installation section in step 3) is completed, a circular hole is opened on the installation hole and the fixing hole respectively to obtain the electroplated hole.

[0019] The beneficial effects of the present invention are as follows: the present invention provides a fixed terminal for a copper column in a car charging gun and a processing method thereof, wherein the fixed terminal processed by the processing method has a combined structure, and the copper column or the fixed terminal can be replaced individually, thereby greatly reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a fixed terminal for a copper column in a car charging gun.

[0021] Figure 2 This is a cross-sectional view of a top view of a fixed terminal for a copper column in a car charging gun.

[0022] Figure 3It is a cross-sectional view of a top view of a fixed terminal for a copper column in a car charging gun after shrinking.

[0023] The markings of the components in the accompanying drawings are as follows: 1. Installation section; 2. Limiting section; 3. Fixing section; 4. Installation hole; 5. Fixing hole; 6. Locking groove; 7. Limiting groove; 8. Plating hole; 9. Shrinking groove. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0025] See also Figures 1 to 3 , the embodiment of the present invention includes:

[0026] A fixed terminal for a copper column in a car charging gun comprises a terminal body, on which a copper column is mounted, and a combined structure is provided on the terminal body, so that the copper column or the terminal body can be replaced alone, thereby greatly reducing maintenance costs.

[0027] The terminal body comprises an installation section 1 , a limiting section 2 and a fixing section 3 . The installation section 1 , the limiting section 2 and the fixing section 3 are fixedly connected in sequence from left to right, and the combined structure is arranged on the installation section 1 .

[0028] The mounting section 1 is used to be connected to the copper column, the limiting section 2 is used to be connected to the mounting plate of the charging gun, and the fixing section 3 is used to be connected to the charging gun.

[0029] The combined structure includes a mounting hole 4 , which is opened on the left side of the mounting section 1 , and is used for mounting the copper column.

[0030] The side wall of the mounting hole 4 is provided with a plurality of shrinking grooves 9 which penetrate the side wall of the mounting hole 4. The plurality of shrinking grooves 9 are arranged in an array with the axis of the mounting hole 4 as the center of the circle on the side wall of the mounting hole 4. The plurality of shrinking grooves 9 divide the side wall of the mounting hole 4 into a plurality of shrinking strips in pairs. After the copper column is installed in the mounting hole 4, the opening of the shrinking strip is shrunken to fix the copper column in the mounting hole 4.

[0031] A locking groove 6 is provided on the outside of the mounting hole 4, and a locking ring is installed in the locking groove 6 after the shrinking. The locking ring further ensures the size of the opening of the shrinking strip to prevent the shrinking strip from deforming during use, thereby causing the copper column to fall out of the mounting hole 4.

[0032] A limiting groove 7 is provided on the outer side of the limiting section 2, and the limiting groove 7 cooperates with a mounting plate on the charging gun. The mounting plate is used to limit a plurality of the terminal bodies, thereby forming a charging port of the charging gun.

[0033] A fixing hole 5 is provided on the right side of the fixing section 3 , and the fixing hole 5 is connected to the fixing structure of the charging gun, so that the terminal body can be fixed to the charging gun.

[0034] A plating hole 8 is provided on the side wall of the mounting hole 4 and the side wall of the fixing hole 5 between two adjacent shrinkage grooves 9. The plating hole 8 is used for the outflow of the plating liquid when the terminal body is electroplated. The plating liquid flows in from the mounting hole 4 and the fixing hole 5 respectively, and flows out through the corresponding plating hole 8, thereby ensuring the integrity of the plating of the bottom surface of the mounting hole 4 and the bottom surface of the fixing hole 5.

[0035] A method for processing a fixed terminal of a copper column in a car charging gun, the specific steps comprising:

[0036] 1) Processing of the fixing section 3: firstly, a hole is drilled on the right side of the blank with a hole diameter of 2.55 mm and a controlled depth of 10 mm to obtain the fixing hole 5, and then the outer circle of the right side is turned with an outer diameter of 4 mm and a controlled length of 10 mm to obtain the fixing section 3.

[0037] 2) Processing of the limiting segment 2: Continue to turn the outer circle of the blank connected to the fixed segment 3, with an outer diameter of 8.2 mm and a controlled length of 10 mm to obtain the limiting segment 2, and make a groove in the limiting segment 2 12 mm away from the mounting segment, with a controlled groove length of 2 mm and an inner diameter of 8 mm to obtain the limiting groove 7.

[0038] 3) Processing of the mounting section 1: Continue to turn the outer circle of the blank connected to the limiting section 2, with an outer diameter of 9.5mm and a controlled length of 24.8mm to obtain the mounting section 1, first drill a hole on the left side of the mounting section 1 with a hole diameter of 4.6mm and a controlled depth of 22.0mm to obtain the mounting hole 4, then perform horizontal milling on the side wall of the mounting hole 4 with a groove width of 1mm and a controlled length of 22.0mm to obtain a plurality of shrinkage grooves 9, finally perform vertical milling on the side wall of the mounting hole 4 at 1.3mm from the left side, with a groove width of 2.7mm and an inner diameter of 8.9mm, and open a circular hole at 22mm from the left side wall of the mounting hole 4 and at 9mm from the right side wall of the fixing hole 5 to obtain the electroplating hole 8 with a hole diameter of φ1.5±0.03mm, thereby manufacturing the terminal body.

[0039] 4) Electroplating inspection: The terminal body is inspected after electroplating. or Standard plug-in and pull-out tests are carried out on the terminal body after electroplating. The plug-in and pull-out force meets 10N~15N. After 10,000 plug-in and pull-out times, the plug-in and pull-out force still needs to meet 8N~12N, and the contact resistance is less than 1.1mΩ

[0040] Different from the prior art, the present invention provides a fixed terminal for a copper column in a car charging gun and a processing method thereof. The fixed terminal processed by the processing method has a combined structure, and the copper column or the fixed terminal can be replaced alone, which greatly reduces the maintenance cost.

[0041] In the description of the present invention, it should be noted that the components are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional test methods. The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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.

[0042] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fixed terminal for a copper column in a car charging gun, comprising a terminal body, on which a copper column is mounted, characterized in that: The terminal body is provided with a combined structure; The terminal body comprises an installation section, a limiting section and a fixing section. The installation section, the limiting section and the fixing section are fixedly connected in sequence from left to right, and the combined structure is arranged on the installation section.

2. A fixing terminal for a copper column in a car charging gun according to claim 1, characterized in that: The combined structure includes a mounting hole, which is opened on the left side of the mounting section. The side wall of the mounting hole is provided with a plurality of shrinkage grooves penetrating the side wall of the mounting hole. The plurality of shrinkage grooves are arranged in an array with the axis of the mounting hole as the center of the circle on the side wall of the mounting hole.

3. A fixed terminal for a copper column in a car charging gun according to claim 2, characterized in that: A locking groove is arranged outside the installation hole, and a locking ring is installed in the locking groove after the locking groove is shrunken.

4. A fixing terminal for a copper column in a car charging gun according to claim 2, characterized in that: A limiting groove is arranged on the outer side of the limiting section, and the limiting groove matches with the mounting plate on the charging gun.

5. A fixing terminal for a copper column in a car charging gun according to claim 4, characterized in that: A fixing hole is provided on the right side of the fixing section, and the fixing hole is connected to the fixing structure of the charging gun.

6. A fixing terminal for a copper column in a car charging gun according to claim 5, characterized in that: A plating hole is provided on the side wall of the mounting hole and the side wall of the fixing hole between two adjacent shrinkage grooves.

7. A method for processing a fixed terminal of a copper column in a vehicle charging gun according to claim 1, characterized in that: The specific steps include: 1) Fixed segment processing: firstly, drilling a hole on the right side of the blank to control the length to obtain the fixed hole, and then turning the outer circle of the right side to control the length to obtain the fixed segment; 2) Processing of the limiting segment: continuing to turn the outer circle of the blank connected to the fixed segment, controlling the length, obtaining the limiting segment, and slotting at an appropriate position of the limiting segment, controlling the length and inner diameter of the slot, obtaining the limiting slot; 3) Processing of the installation section: Continue turning the outer circle of the blank connected to the limiting section to control the length to obtain the installation section, first drill the left side of the installation section to control the length to obtain the installation hole, then perform horizontal milling on the side wall of the installation hole to control the length to obtain a plurality of shrinking grooves, and finally perform vertical milling on the side wall of the installation hole to control the groove width and inner diameter, thereby manufacturing the terminal body; 4) Electroplating test: The terminal body is tested after electroplating, and a plug-in test is performed on the terminal body after electroplating using a standard plug-in test.

8. A method for processing a fixed terminal of a copper column in a vehicle charging gun according to claim 7, characterized in that: After the processing of the mounting section in step 3) is completed, a circular hole is respectively opened on the mounting hole and the fixing hole to obtain the electroplated hole.

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