Clamping and grabbing type new energy automobile charging terminal

Abstract

The utility model relates to the new energy automobile charging socket field, and specifically discloses a clamping type new energy automobile charging terminal comprising a terminal body, the terminal body comprises a base body, the base body comprises a power connection segment and an installation segment, the power connection segment forms a first installation cavity, a cable sealing ring is embedded and connected in the first installation cavity, and the cable sealing ring is connected with the installation segment. A first mounting groove is formed in the outer wall of the base body, a terminal sealing ring is embedded in the first mounting groove, a second mounting cavity is formed in the mounting section, a reed is detachably connected in the second mounting cavity in an embedded mode, a second mounting groove is formed in the position, located on the outer wall of the mounting section, of the base body, an elastic piece is connected in the second mounting groove in an embedded mode, and an elastic clamping claw is arranged on the elastic piece. The elastic clamping claw inclines and protrudes outwards along the outer wall of the installation section, the cable sealing ring is mainly used for preventing water at the rear end of the socket, the terminal sealing ring is mainly used for preventing water at the front end of the socket, and the cable sealing ring and the terminal sealing ring act together, so that the safety of electrical connection is improved.

Description

Technical Field

[0001] The utility model relates to the field of new energy vehicle charging socket industry, in particular to a card-grabbing type new energy vehicle charging terminal. Background Art

[0002] Since the country issued the new version of the national standard charging socket for new energy vehicles in 2015, various manufacturers have developed different types of socket structures and terminals according to the 2015 version of the national standard. To date, the production process of terminals in most charging sockets is still achieved by pure machining. On the one hand, the cost of terminals produced by pure machining is relatively high. On the other hand, the fixation of terminals in the socket often requires more than two plastic parts. The increase in the number of parts will increase the product cost and the assembly cost. At present, new energy vehicles are gradually accepted by the market. Various OEMs are producing their own new energy vehicles. The market competition is very fierce, so they have to face the pressure of cost reduction. The price of the charging socket part is also falling. Various socket suppliers are developing stamped terminals to replace machined terminals to achieve the purpose of cost reduction, but the sealing problem of stamped terminals is more difficult to solve.

[0003] After the existing terminal tail is crimped, single-wire sealing is often not possible. Generally, the tail wires of the L\N\PE\CC\CP terminals are passed through the same large sealing pad, and then a seal is established between the sealing pad and the socket housing to achieve the sealing of the crimping area. This makes assembly difficult and inconvenient.

[0004] The existing charging socket assembly with patent announcement number CN213959226U has a metal terminal arranged in a shell through a bracket, a tail cover is closed at the rear of the shell, and the sealing gasket is between the tail cover and the shell. A sealing gasket is added between the tail cover and the shell to fill the gap between the tail cover and the shell to achieve sealing. The assembly is difficult. When a single line is damaged, the sealing gasket still needs to be disassembled as a whole for replacement. The practicality is low and it is inconvenient to use. Utility Model Content

[0005] The utility model provides a card-grabbing type new energy vehicle charging terminal to solve the technical problems in the prior art that single-wire sealing cannot be achieved, assembly is difficult, practicality is low, and use is inconvenient.

[0006] In order to solve the above problems, the utility model provides a card-claw type new energy vehicle charging terminal adopts the following technical solution: it includes a terminal body, the terminal body includes a base, the base includes a power connection section and an installation section, the power connection section forms a first installation cavity, a cable sealing ring is embedded in the first installation cavity, a first installation groove is provided on the outer wall of the base, a terminal sealing ring is embedded in the first installation groove, a second installation cavity is formed in the installation section, a spring is detachably embedded in the second installation cavity, a second installation groove is provided on the outer wall of the base, a spring is embedded in the second installation groove, an elastic card is provided on the spring, and the elastic card protrudes outward along the outer wall of the installation section.

[0007] Furthermore, the first installation cavity includes a fixing portion and an extending portion, and the fixing portion and the installation portion are fitted and crimped to fix them.

[0008] Furthermore, the fixing portion is configured as a funnel-shaped structure, and the cable sealing ring comprises a mounting portion and a sealing portion, and an outer diameter of the sealing portion is greater than a maximum outer diameter of the power connection section.

[0009] Furthermore, the side wall of the fixing portion is provided with an overflow hole, and the extending portion is provided with an electroplating process hole, and both the overflow hole and the electroplating process hole are interconnected with the first installation cavity.

[0010] Furthermore, a limiting groove connected to the second mounting groove is arranged on the outer wall of the base, and a guide block is arranged on the spring sheet, and the guide block is engaged with the limiting groove.

[0011] Furthermore, an expansion portion is provided on the inner wall of the second installation cavity, and the expansion portion and the inner wall of the second installation cavity form a first step surface. The spring leaf is embedded in the expansion portion, and the spring leaf is abutted against the first step surface. A cover cap is provided on one end of the installation section facing the spring leaf, and the cover cap is provided with a fixing groove, and the spring leaf and the installation section are both embedded in the fixing groove.

[0012] Furthermore, the spring leaf includes an elastic part and a limiting part, the limiting part includes two groups and is respectively located at both ends of the elastic part, one group of the limiting parts is in contact with the first step surface, and the other group of the limiting parts is embedded in the limiting groove, the generatrix of the elastic part is set as a curve with a depression in the middle, and an oblique bar hole is set on the elastic part.

[0013] Furthermore, a drainage hole is provided on the side wall of the installation section, and the drainage hole is communicated with the second installation cavity.

[0014] Furthermore, it also includes a socket housing, which is provided with an inserting cavity, and the terminal body is plug-connected with the socket housing through the inserting cavity.

[0015] Furthermore, a second step surface is provided on the inner wall of the plug-in cavity, the elastic catch is abutted against the second step surface, and the terminal sealing ring and the cable sealing ring are both interference-fitted with the plug-in cavity.

[0016] The beneficial effects of the catch-type new energy vehicle charging terminal provided by the utility model are as follows: the cable sealing ring is mainly used to prevent water from entering the rear end of the socket, and the terminal sealing ring is mainly used to prevent water from entering the front end of the socket. The cable sealing ring and the terminal sealing ring work together to effectively prevent the intrusion of external impurities such as moisture and dust, thereby improving the safety of the electrical connection and ensuring that the terminal body and the cable crimping area reach the IP67 waterproof level; the spring piece and the elastic catch design thereon enable the charging terminal to be firmly fixed on the socket after being inserted into the charging socket, preventing accidental falling off during charging and ensuring the stability of the electrical connection; the reed acts as a conductive element to ensure that the current can be smoothly transmitted from the charging device to the car battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0018] Figure 1 This is a structural schematic diagram of a card-grabbing new energy vehicle charging terminal of the utility model;

[0019] Figure 2 It is a side view structural schematic diagram of a terminal body of a card-grabbing type new energy vehicle charging terminal of the utility model;

[0020] Figure 3 It is a schematic diagram of the exploded structure of a terminal body of a card-grabbing type new energy vehicle charging terminal of the utility model;

[0021] Figure 4 This is a schematic cross-sectional structure diagram of a terminal body of a card-grabbing type new energy vehicle charging terminal of the utility model;

[0022] Figure 5 The utility model is a schematic diagram of the structure of a cable sealing ring of a clamping type new energy vehicle charging terminal.

[0023] Description of reference numerals:

[0024] 1. Terminal body; 11. Base; 111. Power connection section; 1111. First installation cavity; 1011. Fixing part; 1012. Extension part; 1013. Overflow hole; 1014. Electroplating process hole; 1112. Cable sealing ring; 1021. Installation part; 1022. Sealing part; 112. Installation section; 1121. Second installation cavity; 1031. Diameter expansion part; 1032. First step surface; 1122. Drain hole; 12. Spring leaf; 121. Elastic part; 122. Limiting part; 13. Second installation groove; 131. Spring leaf; 1311. Guide block; 1312. Elastic catch; 132. Limiting groove; 14. Cover cap; 141. Fixing groove; 15. First installation groove; 151. Terminal sealing ring; 2. Socket housing; 21. Insertion cavity; 211. Second step surface. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0026] Any number of elements in the drawings is for illustration and not limitation, and any naming is for distinction only and does not have any limiting meaning.

[0027] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0028] The utility model provides a card-grabbing type new energy vehicle charging terminal, such as Figures 1 to 5 As shown, it includes a terminal body 1, the terminal body 1 includes a base 11, the base 11 includes a power connection section 111 and a mounting section 112, the power connection section 111 forms a first mounting cavity 1111, a cable sealing ring 1112 is embedded in the first mounting cavity 1111, a first mounting groove 15 is provided on the outer wall of the base 11, a terminal sealing ring 151 is embedded in the first mounting groove 15, a second mounting cavity 1121 is formed in the mounting section 112, a spring leaf 12 is detachably embedded in the second mounting cavity 1121, a second mounting groove 13 is provided on the outer wall of the mounting section 112 of the base 11, a spring leaf 131 is embedded in the second mounting groove 13, an elastic catch 1312 is provided on the spring leaf 131, and the elastic catch 1312 is inclined and protrudes outward along the outer wall of the mounting section 112.

[0029] By adopting the above technical scheme, the cable sealing ring 1112 is mainly used to prevent water from entering the rear end of the socket, and the terminal sealing ring 151 is mainly used to prevent water from entering the front end of the socket. The cable sealing ring 1112 and the terminal sealing ring 151 work together to effectively prevent the intrusion of external impurities such as moisture and dust, thereby improving the safety of the electrical connection and ensuring that the terminal body and the cable crimping area reach the IP67 waterproof level. In addition, in this structure, a single cable sealing ring 1112 can be fixed in the first installation cavity 1111 to achieve single-line sealing, which can greatly reduce the difficulty and time of assembly; the design of the spring clip 131 and the elastic catch 1312 thereon enables the charging terminal to be firmly fixed on the socket after being inserted into the charging socket, preventing accidental falling off during charging and ensuring the stability of the electrical connection; the reed 12 acts as a conductive element to ensure that the current can be smoothly transmitted from the charging device to the car battery.

[0030] In this embodiment, the cable sealing ring 1112 is configured as an annular structure to facilitate the passage of cables.

[0031] In this embodiment, the base 11 is integrally formed by a stamping process, so that the terminal body 1 has higher strength and stability and reduces the processing and material costs of the terminal.

[0032] In this embodiment, the first installation cavity 1111 includes a fixing portion 1011 and an extending portion 1012. The fixing portion 1011 and the installation portion 1021 are fitted together and crimped and fixed. The fixing portion 1011 is configured as a funnel-shaped structure. The cable sealing ring 1112 includes a mounting portion 1021 and a sealing portion 1022. The outer diameter of the sealing portion 1022 is greater than the maximum outer diameter of the power connection section 111. In this embodiment, the cross-section of the mounting portion 1021 is a T-shaped structure. The crimping and fixing method can ensure that the cable sealing ring 1112 fits tightly with the terminal during the installation process, ensuring that a tight sealing structure is formed between the cable sealing ring 1112 and the terminal, which is not prone to loosening or falling off, and prevents external impurities such as moisture and dust from entering. The funnel-shaped structure of the fixing portion 1011 facilitates guiding the installation portion 1021 to enter.

[0033] In this embodiment, an overflow hole 1013 is provided on the side wall of the fixed portion, and a plating process hole 1014 is provided on the extension portion. The overflow hole 1013 and the plating process hole 1014 are both interconnected with the first installation cavity 1111. After the cable sealing ring 1112 is embedded in the first installation cavity 1111, the space in the fixed portion 1011 becomes smaller during the crimping process, and a part of the material of the cable sealing ring 1112 is squeezed out through the overflow hole 1013, which can effectively increase the pulling force of the cable sealing ring 1112, and further increase the sealing and stability of the cable sealing ring 1112 installed on the terminal body 1. The setting of the plating process hole 1014 facilitates the flow of medicine at the bottom of the first installation cavity 1111 when plating the terminal body 1, thereby preventing the bottom of the first installation cavity 1111 from turning black during electroplating.

[0034] In this embodiment, the outer wall of the base 11 is provided with a limiting groove 132 connected to the second mounting groove 13, and a guide block 1311 is provided on the spring piece 131. The guide block 1311 is engaged with the limiting groove 132. When the spring piece 131 is installed, the guide block 1311 is aligned with the limiting groove 132, and the installation position and direction of the spring piece 131 are accurately positioned, and the stability of the installation of the spring piece 131 is ensured, which can effectively avoid rotation. In this embodiment, the spring piece 131 is wrapped and fixed in the second mounting groove 13 by a stamping die, and the guide block 1311 is set as a hook-type structure, which is convenient for the disassembly and replacement of the spring piece 131 and is more practical.

[0035] In this embodiment, an enlarged diameter portion 1031 is provided on the inner wall of the second mounting cavity 1121, and the enlarged diameter portion 1031 and the inner wall of the second mounting cavity 1121 form a first step surface 1032. The spring leaf 12 is embedded in the enlarged diameter portion 1031, and the spring leaf 12 is pressed against the first step surface 1032. A cap 14 is provided on the end of the mounting section 112 facing the spring leaf 12, and the cap 14 is provided with a fixing groove 141. The spring leaf 12 and the mounting section 112 are both embedded in the fixing groove 141. By removing the cap 14, the removable connection of the spring leaf 12 in the second mounting cavity 1121 is realized, and the spring leaf 12 is pressed against and installed between the first step surface 1032 and the fixing groove 141, thereby ensuring the stability and position accuracy of the installation of the spring leaf 12 in the second mounting cavity 1121.

[0036] In this embodiment, the spring sheet 12 includes an elastic portion 121 and a limiting portion 122. The limiting portion 122 is integrally formed with the elastic portion 121. The limiting portion 122 includes two groups and is respectively located at both ends of the elastic portion 121. One group of the limiting portions 122 is in contact with the first step surface 1032, and the other group of the limiting portions 122 is embedded in the limiting groove 132. In this embodiment, the spring sheet 12 is set to an annular structure, the generatrix of the elastic portion 121 is set to a curve with a concave middle portion, and an oblique bar hole is set on the elastic portion 121. When the terminal contacts the charging plug, it can It can form a larger contact area, which can effectively enhance the stability of the electrical connection, reduce contact resistance, improve charging efficiency, and enable the reed 12 to produce a more uniform deformation when subjected to external force, thereby providing better elasticity and recovery performance, ensuring that the reed 12 can maintain stable electrical contact with the charging plug during the plugging and unplugging process of the charging socket. The setting of the oblique bars helps to improve the heat dissipation performance. During the charging process, the heat generated by the passage of current can be quickly dissipated through these oblique bars, preventing the reed 12 from being damaged due to overheating.

[0037] In this embodiment, a drainage hole 1122 is provided on the side wall of the installation section 112, and the drainage hole 1122 is communicated with the second installation cavity 1121. When water enters the second installation cavity 1121, it can be smoothly discharged through the drainage hole 1122, which can effectively prevent the corrosion of the reed caused by the accumulated water in the second installation cavity 1121.

[0038] In this embodiment, a socket housing 2 is also included, and the socket housing 2 is provided with a plug-in cavity 21. The terminal body 1 is plug-connected to the socket housing 2 through the plug-in cavity 21. In this embodiment, the inner wall of the plug-in cavity 21 is provided with a second step surface 211, and the elastic catch 1312 is pressed against the second step surface 211, and the terminal sealing ring 151 and the cable sealing ring 1112 are both interference fit with the plug-in cavity 21.

[0039] In this embodiment, when the terminal body 1 is assembled, the base 11, the cap 14 and the spring leaf 12 are first assembled, and then the spring leaf 131 is wrapped on the base 11 through a stamping die. When wrapping, the guide block 1311 on the spring leaf 131 is aligned with the limit groove 132, so as to ensure that the spring leaf 131 will not rotate when installed in the second mounting groove 13.

[0040] In this embodiment, the inner wall of the plug-in cavity 21 is provided with a groove matching the guide block 1311, and the groove is connected to the plug-in cavity 21. When the terminal body 1 is inserted into the socket housing 2, the guide block 1311 is aligned with the groove on the socket housing 2, which can ensure that the catch on the spring piece 131 falls exactly on the second step surface 211 of the socket housing 2, ensuring that the terminal body 1 will not retreat.

[0041] In this embodiment, the elastic claws 1312 on the spring piece 131 include two groups, and the two groups of elastic claws 1312 are symmetrically distributed about the vertical center axis of the spring piece 131. In other embodiments, the elastic claws 1312 on the spring piece 131 also include multiple groups, and the multiple groups of elastic claws 1312 are evenly distributed along the circumferential direction of the side wall of the spring piece 131, so that the elastic claws 1312 are more stable when they are engaged with the plug-in cavity 21.

[0042] In this embodiment, after the spring piece 131 is assembled with the terminal body 1, the terminal sealing ring 151 is installed on the base 11, and then the cable can be crimped at the tail of the terminal body 1. Before crimping, the cable sealing ring 1112 is passed on the wire, the wire core is crimped first, and then the fixing part 1011 of the first installation cavity 1111 is crimped, so that the cable sealing ring 1112 is fixed to the terminal body 1. When the terminal body 1 is inserted into the socket housing 2, the terminal sealing ring 151 and the cable sealing ring 1112 are interference fit with the plug-in cavity 21, thereby realizing the sealing of the terminal crimping area.

[0043] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and other terms indicating orientation or position relationship are based on the orientation or position relationship shown in the drawings of this specification, which are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0044] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A card-grabbing new energy vehicle charging terminal, characterized in that: It includes a terminal body, which includes a base body. The base body includes a power connection section and an installation section. The power connection section forms a first installation cavity, in which a cable sealing ring is embedded and connected. The outer wall of the base body is provided with a first installation groove, in which a terminal sealing ring is embedded, and the installation section forms a second installation cavity, in which a spring is detachably embedded and connected. The base body is located on the outer wall of the installation section and a second installation groove is provided, in which a spring is embedded and connected, and an elastic catch is provided on the spring catch, which protrudes outward along the outer wall of the installation section.

2. A card-grabbing new energy vehicle charging terminal according to claim 1, characterized in that: The first installation cavity comprises a fixing portion and an extending portion, and the fixing portion and the installation portion are fitted and crimped to fix them.

3. A card-grabbing new energy vehicle charging terminal according to claim 2, characterized in that: The fixing part is arranged as a funnel-shaped structure, and the cable sealing ring comprises a mounting part and a sealing part, and the outer diameter of the sealing part is larger than the maximum outer diameter of the power connection section.

4. A card-grabbing new energy vehicle charging terminal according to claim 2, characterized in that: The side wall of the fixing portion is provided with an overflow hole, and the extending portion is provided with an electroplating process hole. The overflow hole and the electroplating process hole are both communicated with the first installation cavity.

5. A card-grabbing new energy vehicle charging terminal according to claim 1, characterized in that: The outer wall of the base body is provided with a limiting groove which is connected with the second mounting groove, and the spring piece is provided with a guide block which is engaged with the limiting groove.

6. A card-grabbing new energy vehicle charging terminal according to claim 1, characterized in that: The inner wall of the second mounting cavity is provided with an enlarged diameter portion, and the enlarged diameter portion and the inner wall of the second mounting cavity form a first step surface. The spring leaf is embedded in the enlarged diameter portion, and the spring leaf is abutted against the first step surface. A cover cap is provided at one end of the mounting section facing the spring leaf, and the cover cap is provided with a fixing groove, and the spring leaf and the mounting section are both embedded in the fixing groove.

7. A card-grabbing new energy vehicle charging terminal according to claim 6, characterized in that: The spring leaf includes an elastic part and a limiting part. The limiting part includes two groups and is respectively located at both ends of the elastic part. One group of the limiting parts is in contact with the first step surface, and the other group of the limiting parts is embedded in the limiting groove. The generatrix of the elastic part is set as a curve with a concave middle part, and an oblique bar hole is set on the elastic part.

8. The card-grabbing type new energy vehicle charging terminal according to claim 1, characterized in that: The side wall of the installation section is provided with a drainage hole, and the drainage hole is communicated with the second installation cavity.

9. A card-grabbing type new energy vehicle charging terminal according to any one of claims 1 to 8, characterized in that: It also includes a socket housing, which is provided with an inserting cavity, and the terminal body is plug-connected with the socket housing through the inserting cavity.

10. A card-grabbing new energy vehicle charging terminal according to claim 8, characterized in that: The inner wall of the plug-in cavity is provided with a second step surface, the elastic catch is abutted against the second step surface, and the terminal sealing ring and the cable sealing ring are both interference-fitted with the plug-in cavity.

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