CN205069943U - Miniature connector structure convenient to welding maintenance - Google Patents

Abstract

The utility model discloses a micro connector structure convenient for welding maintenance, which comprises an insulating seat, two rows of terminals and a metal shell; the front end of the insulating base is provided with a splicing cavity, the two rows of terminals respectively extend into the upper side and the lower side of the splicing cavity, each terminal is provided with a contact part, and the contact parts of the upper row of terminals and the lower row of terminals are mutually oppositely and convexly arranged up and down; the rear section of the insulating seat is concavely provided with a plurality of welding grooves, all or part of the terminals are provided with welding parts extending into the respective welding grooves, and the top surfaces of the welding parts are concavely provided with positioning cavities for preventing desoldering; by this, through the structural design of welding part, welding groove and mutually support, it is guaranteeing under the small and exquisite prerequisite of volume of miniature connector, has obtained great welding part, and the bonding wire operation of being convenient for has improved welding stability, and its welding part design quantity is decided by the concrete link of connector and cable, and welding inspection and follow-up maintenance are all more convenient.

Description

Micro-connector structure for easy soldering repairs

technical field

The utility model relates to the technology in the field of connectors, in particular to a miniature connector structure which is convenient for welding and maintenance.

Background technique

With the development of miniaturization and thinning of electronic products, the connectors used have become smaller and smaller accordingly. In the prior art, the tail ends of the connectors are transferred through the circuit board, for example, the upper and lower For the Type-C connector with 12PIN terminals in each row, one end of the circuit board usually needs to be welded with 24 welding parts at the end of the connector, and the other end of the circuit board usually has 9 welding points to be welded with the external cable. There are many parts, and welding and welding inspection are troublesome. In particular, the overall volume design of the connector product is limited, resulting in extremely small space occupied by each welding part, and errors are prone to occur during welding. During assembly, transportation and use, All are susceptible to vibration and loosening and de-soldering, resulting in poor contact at the welded part, and subsequent maintenance operations are also inconvenient.

Therefore, a new technical solution needs to be developed to solve the above problems.

Utility model content

In view of this, the utility model aims at the deficiencies in the prior art, and its main purpose is to provide a micro-connector structure that is convenient for welding and maintenance. It obtains a larger welding part on the premise of ensuring a small size of the micro-connector. , It is convenient for wire welding operation and improves the welding stability. The design quantity of the welding part is determined by the specific connection end of the connector and the cable, and the welding inspection and subsequent maintenance are more convenient.

In order to achieve the above object, the utility model adopts the following technical solutions:

A micro-connector structure that is convenient for welding and maintenance, including an insulating seat, two rows of terminals embedded in the insulating seat, and a metal shell covering the outside of the insulating seat; Rows of terminals extend into the upper and lower sides of the insertion cavity respectively, and each terminal has a contact portion, and the contact portions of the upper and lower rows of terminals protrude from each other up and down; the rear part of the aforementioned insulating seat is provided with a number of welding grooves in a spaced manner All or part of the aforementioned terminals have welding parts protruding into the respective welding grooves, and the top surface of the welding parts is recessed downward to provide a positioning cavity to prevent desoldering.

As a preferred solution, the positioning cavity is a structure formed by punching and deformation, and a convex portion is formed on the bottom surface of the welding portion, and the bottom surface of the convex portion is supported on the inner bottom surface of the welding groove.

As a preferred solution, a guiding and positioning groove that facilitates the regular positioning of the welding wire is formed between each welding groove and the rear end surface of the insulating seat. .

As a preferred solution, the front end of the metal shell is bent and extended inwardly toward the insertion cavity to form a contact elastic piece, and the free end of the contact elastic piece has a contact protrusion protruding toward the insertion cavity; the inner wall of the aforementioned insertion cavity is correspondingly concave. There is an avoidance cavity for the deformation of the contact shrapnel.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that it is mainly through the structural design and mutual cooperation of the welding part and the welding groove, which ensures the micro connector Under the premise of compact size, a large welding part is obtained, which is convenient for wire welding operation and improves welding stability. The design number of the welding part is determined by the specific connection end of the connector and the cable. convenient.

In order to illustrate the structural features and functions of the utility model more clearly, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the exploded structural representation of the embodiment of the utility model;

Fig. 2 is the front view of the embodiment of the utility model;

Fig. 3 is the top view of the embodiment of the present utility model (rear shell is not shown);

Fig. 4 is a partial enlarged view of place A in Fig. 1;

Fig. 5 is a partial cross-sectional structural diagram of the part shown in Fig. 4;

Fig. 6 is another implementation structure diagram of the part shown in Fig. 4;

Fig. 7 is a partial cross-sectional structural view of the part shown in Fig. 6;

Fig. 8 is a partial cross-sectional structural diagram of the front section of the embodiment of the present invention.

Explanation of the accompanying drawings:

10. Insulation seat 11. Plug cavity

12. Rear part of insulating seat 13. Welding groove

14. Guide positioning groove 15. Avoidance cavity

20, terminal 21, contact part

22. Welding part 23. Positioning cavity

24. Convex part 30. Metal shell

31. Contact shrapnel 32. Contact bump

40, back shell.

detailed description

Please refer to Figures 1 to 8, which show the specific structure of the embodiment of the present invention, which includes an insulating seat (10), two rows of terminals (20) embedded in the insulating seat (10) and The metal shell (30) covering the outside of the insulating seat (10) is described here as an example of a Type-C connector with 12PIN terminals in the upper row and the lower row.

Wherein, the front end of the insulating base (10) is provided with a socket cavity (11), and the aforementioned two rows of terminals (20) respectively extend into the upper and lower sides of the socket cavity (11), and each terminal has a contact portion (21). , The contact parts (21) of the lower row of terminals (20) protrude up and down toward each other.

The rear part (12) of the insulating base (10) is concavely provided with several welding grooves (13) at intervals, and all or part of the aforementioned terminals have welding parts (22) extending into the respective welding grooves (13). The top surface of the welding part (22) is recessed downwards to provide a positioning cavity (23) to prevent desoldering; in this embodiment, the positioning cavity (23) is a structure formed by punching and deformation. The bottom surface of (22) is correspondingly formed with a convex portion (24), and the bottom surface of the convex portion (24) is supported on the inner bottom surface of the welding groove (13);

When welding, extend the end of the welding wire into the positioning cavity (23), and the solder is sintered and accumulated in the positioning cavity (23), so as to firmly connect the welding wire to the welding part (22), effectively preventing loosening and falling off. In the traditional technology, the welding wire end is usually directly welded to the surface of the welding part, and the fixed contact area and angle are not enough, which makes it easy to loosen between the welding wire end and the welding part; in the metal shell ( 30) is detachably assembled with a rear shell (40), which is designed to be shorter than the conventional rear shell, and the overall volume of the connector product is smaller, especially the length is shortened. Just open the back shell (40), the number of its welding parts is simplified, and the welding parts are relatively large, which is clear at a glance and easy to operate.

Comparing Fig. 4 and Fig. 6, it can be seen that a guiding positioning groove (14) is formed between the welding groove (13) shown in Fig. Afterwards, it is a slope or an arc-shaped surface with a gradually lower design, and the design purpose of its guide positioning groove (14) is to better regularize the positioning of the welding wire.

And, as shown in Fig. 1, Fig. 2 and Fig. 8, the front end of the metal shell (30) is bent and extended inwardly toward the insertion cavity (11) to form a contact elastic piece (31), and the free end of the contact elastic piece (31) There is a contact protrusion (32) protruding toward the insertion cavity (11); the inner wall of the insertion cavity (11) is correspondingly recessed with an avoidance cavity (15) for the deformation of the contact shrapnel (31).

The key point of the design of the utility model is that, mainly through the structural design and mutual cooperation of the welding part and the welding groove, it obtains a larger welding part on the premise of ensuring the small size of the micro connector, which is convenient for welding wire operation. The welding stability is improved, and the number of welding parts is determined by the specific connection end of the connector and the cable, and the welding inspection and subsequent maintenance are more convenient.

The above are only preferred embodiments of the present utility model, and are not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model , all still belong to the scope of the technical solution of the utility model.

Claims (4)

1. A micro-connector structure that is convenient for welding and maintenance, characterized in that it includes an insulating seat (10), two rows of terminals (20) embedded in the insulating seat (10) and covered in the insulating seat (10) The outer metal shell (30); wherein, the front end of the insulating seat (10) is provided with a socket cavity (11), and the aforementioned two rows of terminals (20) respectively extend into the upper and lower sides of the socket cavity (11), and each terminal is It has a contact part (21), and the contact parts (21) of the upper and lower rows of terminals (20) are protruding up and down; All or part of the terminals have welding parts (22) protruding into the respective welding grooves (13), and the top surface of the welding part (22) is concavely provided with a positioning cavity (23) to prevent desoldering. 2. The micro-connector structure that is convenient for welding maintenance according to claim 1, characterized in that: the positioning cavity (23) is a structure formed by punching and deformation, which is formed correspondingly on the bottom surface of the welding part (22) There is a convex part (24), and the bottom surface of the convex part (24) is supported on the inner bottom surface of the welding groove (13). 3. The micro-connector structure that is convenient for welding and maintenance according to claim 1, characterized in that: between each welding groove (13) and the rear end surface of the insulating seat (10), a guiding positioning that is conducive to the regular positioning of the welding wire is formed Groove (14), the bottom surface of the guide and positioning groove (14) is a slope or an arc surface designed to gradually decrease from front to back. 4. The micro-connector structure that is convenient for welding maintenance according to claim 1, characterized in that: the front end of the metal shell (30) is bent and extended inwardly toward the insertion cavity (11) to form a contact spring (31), the The free end of the contact shrapnel (31) has a contact protrusion (32) protruding toward the insertion cavity (11); the inner wall of the aforementioned insertion cavity (11) is correspondingly concavely provided with an avoidance recess for the deformation of the contact shrapnel (31) Cavity (15).