Spring coil terminal connector

Abstract

The utility model discloses a spring coil terminal connector which comprises a welding terminal and an insertion hole formed in a fixed end. And the spring terminal is sleeved in the fixed end, a plurality of spring arms are annularly arranged on the spring terminal, and the tail ends of the plurality of spring arms are obliquely folded towards the center of the insertion hole. The tail ends of a plurality of spring arms on the spring terminal incline and fold inwards, so that the spring terminal has elastic contact performance and can be in close contact with the butt joint piece, the stability of the butt joint piece after connection is improved, and the contact is still stable and reliable when the butt joint piece rotates; in addition, irregular convex points are uniformly arranged on the inner wall of the spring arm, so that the friction force between the spring arm and the butt joint piece is improved through contact between the convex points and the butt joint piece, and the stability of the butt joint piece after connection is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of terminal connectors, in particular to a spring coil terminal connector. Background Art

[0002] There are usually several terminal connectors on the PCB circuit board to realize the components of board-to-board or wire-to-board connection. They play a vital role in the design of the circuit board, allowing the circuit board to connect with external devices, other circuit boards or power supplies.

[0003] Among them, terminal connectors such as sockets and pins are more common. Socket and pin type terminal connectors provide a detachable connection method, which is commonly used in modular circuit design to facilitate component replacement and upgrading; existing connection methods are generally two-point or multi-point contact, with general stability after connection, and poor contact stability when the mating parts rotate. Utility Model Content

[0004] The utility model aims at solving the problems existing in the prior art and proposes the following technical solutions:

[0005] Spring ring terminal connector, including:

[0006] Welding terminal, a mating hole formed at the fixed end.

[0007] A spring terminal is sleeved in the fixed end, and a plurality of spring arms are provided in a ring shape on the spring terminal, and the ends of the plurality of spring arms are inclined and closed toward the center of the insertion hole.

[0008] As a preferred embodiment of the above technical solution, an ear plate is provided on the outer side of the spring terminal, a vertical groove is opened in the fixed end, and the spring terminal is installed in the fixed end through the ear plate sliding sleeve in the vertical groove.

[0009] As a preferred embodiment of the above technical solution, an annular groove is provided in an annular shape in the fixed end corresponding to the end of the vertical groove, and the ear plate can slide in the annular groove.

[0010] As a preferred embodiment of the above technical solution, convex points are evenly arranged on the inner wall of the spring arm.

[0011] As a preferred embodiment of the above technical solution, the welding terminal is installed in a plastic sleeve, and mounting holes are evenly opened on the plastic sleeve. The welding terminal includes a fixed end and a welding end, and the fixed end and the welding end are fixedly connected. The welding terminal is installed on the plastic sleeve by sleeve- ing the fixed end in the mounting hole.

[0012] The beneficial effects of the utility model are:

[0013] The ends of the spring arms on the spring terminal of the utility model are tilted inwards and closed, so that the spring terminal has elastic contact performance, can be in close contact with the docking piece, improve the stability of the docking piece after connection, and when the docking piece rotates, the contact is still stable and reliable; in addition, convex points are evenly arranged on the inner wall of the spring arm, and the convex points are irregular, so that the convex points contact the docking piece, improve the friction between it and the docking piece, thereby further improving the stability of the docking piece after connection;

[0014] The utility model is provided with a detachable spring terminal, so that the spring terminal can be quickly replaced even if it is damaged. At the same time, an ear plate is provided on the spring terminal, and a vertical groove and an annular groove are provided at the fixed end. This makes it convenient to disassemble and assemble the spring terminal. On the other hand, when the ear plate is located in the annular groove, the ear plate is misaligned with the vertical groove, and the spring terminal is not easy to fall off from the fixed end, thereby improving the stability of the spring terminal when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model after being disassembled;

[0017] Figure 3 It is a schematic diagram of the spring terminal structure;

[0018] Figure 4 It is a schematic diagram of the fixed end structure;

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the fixed end and the spring terminal.

[0020] In the figure:

[0021] 1. Plastic sleeve; 2. Welding terminal; 21. Fixed end; 211. Vertical groove; 212. Annular groove; 22. Welding end; 3. Spring terminal; 31. Spring arm; 32. Ear plate; 33. Bump. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0023] Example

[0024] like Figure 1-5 As shown;

[0025] A spring coil terminal connector comprises a plastic sleeve 1, on which mounting holes are evenly provided, and a plurality of welding terminals 2 are installed in the mounting holes of the plastic sleeve 1, wherein the welding terminals 2 comprise a fixed end 21 and a welding end 22, which are fixedly connected, and the welding terminal 2 is installed on the plastic sleeve 1 by sleeved in the mounting hole by the fixed end 21, wherein the fixed end 21 is used to connect with a mating piece, and the welding end 22 is welded on a PCB circuit board, and a spring terminal 3 is detachably sleeved in the fixed end 21, and the spring terminal 3 is in direct contact with the mating piece, and a plurality of spring arms 31 are annularly provided on the spring terminal 3, and the ends of the plurality of spring arms 31 are tilted inwardly and closed, so that the spring terminal 3 has elastic contact performance, improves the stability of the mating piece after connection, and the contact is still stable and reliable when the mating piece rotates; at the same time, this detachable installation method enables the spring terminal 3 to be quickly replaced even if it is damaged;

[0026] Furthermore, the raw material of the spring terminal 3 is a plate, on which a mold of the spring arm 31 is cut out and then rolled and extruded into the spring terminal 3, wherein symmetrical ears are provided on both sides of the raw material, and when the spring terminal 3 is extruded, the two ears are combined into an ear plate 32; wherein a vertical groove 211 is provided in the fixed end 21, and the spring terminal 3 is installed in the fixed end 21 by sliding the ear plate 32 in the vertical groove 211, so that the spring terminal 3 is convenient to disassemble and assemble;

[0027] Furthermore, an annular groove 212 is provided in an annular shape in the fixed end 21 at the end of the vertical groove 211, and the ear plate 32 can slide in the annular groove 212. After the spring terminal 3 is slid into the vertical groove 211 through the ear plate 32 so that the spring terminal 3 is inserted into the fixed end 21, the spring terminal 3 is rotated to slide the ear plate 32 in the annular groove 212. In this way, the ear plate 32 is misaligned with the vertical groove 211, and the spring terminal 3 is not easy to fall off from the fixed end 21, which effectively avoids the problem of the spring terminal 3 falling off easily when disassembling and assembling the docking parts.

[0028] like Figure 3 As shown;

[0029] The inner wall of the spring arm 31 is evenly provided with protrusions 33, and the protrusions 33 are irregular. Thus, the protrusions 33 contact the docking parts, thereby increasing the friction between the protrusions and the docking parts, thereby further improving the stability of the docking parts after connection.

[0030] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. Spring ring terminal connector, characterized in that: include: A welding terminal (2) formed in an insertion hole of the fixed end (21); A spring terminal (3) is sleeved in the fixed end (21), and a plurality of spring arms (31) are provided in a ring shape on the spring terminal (3), and the ends of the plurality of spring arms (31) are inclined and closed toward the center of the insertion hole.

2. The spring coil terminal connector according to claim 1, characterized in that: The spring terminal (3) is provided with an ear plate (32) on the outside, and a vertical groove (211) is provided in the fixed end (21). The spring terminal (3) is installed in the fixed end (21) by sliding the ear plate (32) in the vertical groove (211).

3. The spring coil terminal connector according to claim 2, characterized in that: An annular groove (212) is provided in an annular shape in the fixed end (21) corresponding to the end of the vertical groove (211), and the ear plate (32) can slide in the annular groove (212).

4. The spring ring terminal connector according to claim 1, characterized in that: The inner wall of the spring arm (31) is evenly provided with protrusions (33).

5. The spring ring terminal connector according to claim 1, characterized in that: The welding terminal (2) is installed in the plastic sleeve (1), and the plastic sleeve (1) is evenly provided with mounting holes. The welding terminal (2) comprises a fixed end (21) and a welding end (22), and the fixed end (21) and the welding end (22) are fixedly connected. The welding terminal (2) is installed on the plastic sleeve (1) by sleeve-fitting the fixed end (21) into the mounting hole.

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