Spring pin assembly

Abstract

The utility model discloses a spring pin assembly which comprises a plastic support and further comprises a retaining gear groove formed in the lower end of the inner wall of a cavity of the plastic support, a sealing groove body formed in the upper end of the inner wall of the cavity of the plastic support, a sealing assembly arranged on the inner wall of the cavity of the plastic support, and a tail plug arranged in the retaining gear groove. According to the spring pin assembly, when the spring pin assembly is installed, the needle tube and the plastic support are assembled in an extrusion mode, the sealing ring can be assembled in the sealing groove body in an extrusion mode, the sealing and waterproof performance of a device is effectively guaranteed, and meanwhile the feasibility of modular assembly is improved; the tail plug can be finally connected to the bottom of the needle tube in a threaded mode and is embedded in the retaining gear groove, so that the needle tube can be prevented from falling out, overall assembly is simpler, certain retention force between products is guaranteed, and meanwhile the hidden danger that the products are separated in the application process can be eradicated.

Description

Technical Field

[0001] The utility model relates to the technical field of spring pins, in particular to a spring pin assembly. Background Art

[0002] Spring pin is a kind of precision connector used in peripheral electronic products. It is usually composed of three parts: needle, needle tube and spring. According to the application requirements, the product structure has beveled edge, hollow, mushroom head and other design styles. In terms of plating, the inner surface of the needle and needle tube is generally nickel-plated to ensure wear resistance and oxidation resistance. The outermost layer is gold-plated and platinum-plated, which can greatly reduce the contact resistance of the product. Because of its large transmission current, small space occupation, precise contact, waterproof and high-intensity application characteristics, it is generally used in mobile phones and tablet devices, portable charging devices, wearable smart products, smart homes, medical, aerospace and other products.

[0003] In the application requirements of smart wearables and fast charging stations, due to product space limitations, Pogopins must be designed to be very short. The hollow type is the first option for structural design. The assembly method between the spring pin and the plastic bracket is interference fit. Due to the large tolerance of the plastic bracket, it is easy to loosen and crack. In addition, the assembly requires a PIN setting machine and a special production fixture, and the initial equipment investment is large. In order to realize modular assembly connectors and reduce assembly difficulty, the product no longer needs to consider PCB welding. One end is exposed or connected to the spring terminal, and the other end is directly pressed onto the PCB board to achieve connection. At this time, a spring pin is needed that can meet the modular simple assembly requirements, and the product can achieve waterproof performance after assembly. Utility Model Content

[0004] The utility model aims to provide a spring pin assembly to solve the problem that the spring pin mentioned in the above background technology is complicated to assemble and lacks waterproofness.

[0005] To achieve the above object, the utility model provides the following technical solution: a spring pin assembly, including a plastic bracket, and also including:

[0006] The backstop groove is provided at the lower end of the inner wall of the plastic bracket cavity;

[0007] The sealing groove is provided at the upper end of the inner wall of the plastic support cavity;

[0008] A sealing component is arranged on the inner wall of the cavity of the plastic bracket to prevent water from entering the plastic bracket and affecting its use;

[0009] The tail plug is arranged inside the stop groove and is used to limit the sealing component.

[0010] Preferably, the sealing assembly includes a needle tube and a sealing ring. The needle tube is embedded in the cavity of the plastic bracket, and the bottom of the needle tube extends into the backstop groove. The sealing ring is embedded in the groove opened at the upper end of the outer wall of the needle tube, and the sealing ring is embedded in the sealing groove body.

[0011] Preferably, a limiting circular seat is provided in the inner cavity of the needle tube, and an inclined chamfer is provided at the bottom of the limiting circular seat.

[0012] Preferably, a needle is slidably inserted into the cavity of the limiting circular seat, a circular groove is provided at the bottom of the needle, a spring is provided inside the cavity of the needle tube, and the top of the spring is embedded in the circular groove provided at the bottom of the needle.

[0013] Preferably, a tail plug is threadedly connected to the bottom of the outer wall of the needle tube, and the tail plug is embedded in the backstop groove.

[0014] Compared with the prior art, the beneficial effect of the utility model is that when the utility model is installed, the needle tube can be extruded and assembled with the plastic bracket, and the sealing ring can be extruded and assembled inside the sealing groove body, which effectively ensures the sealing and waterproof performance of the device while improving the feasibility of modular assembly. The tail plug can be finally threadedly connected to the bottom of the needle tube, and is also embedded in the inside of the anti-retraction groove, thereby preventing the needle tube from falling out. The overall assembly is simpler, and while ensuring a certain holding force between products, the product can also eliminate the hidden danger of separation during application. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0017] Figure 3 It is an explosion diagram of the utility model.

[0018] In the figure: 1. plastic bracket; 2. needle tube; 3. needle; 4. stop groove; 5. sealing groove body; 6. tail plug; 7. sealing ring; 8. spring; 9. limit round seat. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] See also Figure 1-3 The utility model provides a spring pin assembly, including a plastic bracket 1, and also includes:

[0021] A sealing component is arranged on the inner wall of the cavity of the plastic bracket 1 to prevent water from entering the plastic bracket 1 and affecting its use. A sealing groove body 5 is provided at the upper end of the inner wall of the cavity of the plastic bracket 1 to cooperate with the sealing component for use. The sealing component includes a needle tube 2 and a sealing ring 7. The needle tube 2 is embedded in the cavity of the plastic bracket 1, and the bottom of the needle tube 2 extends into the backstop groove 4. The sealing ring 7 is embedded in the groove opened at the upper end of the outer wall of the needle tube 2, and the sealing ring 7 is embedded in the sealing groove body 5. The cavity of the limiting round seat 9 is slidably penetrated by a needle 3, and a circular groove is opened at the bottom of the needle 3. A spring 8 is provided inside the cavity of the needle tube 2, and the top of the spring 8 is embedded in the circular groove opened at the bottom of the needle 3. A sealing ring 7 is embedded in the groove opened at the upper end of the outer wall of the needle tube 2. The needle tube 2 is assembled by extrusion with the plastic bracket 1 to seal the sealing ring 7. The extrusion assembly is inside the sealing groove body 5, which effectively ensures the sealing and waterproof performance of the device, and also improves the feasibility of modular assembly. A limited circular seat 9 is set in the internal cavity of the needle tube 2, and the spring 8 can be first placed in the cavity of the needle tube 2, and then the needle 3 is inserted into the interior of the limited circular seat 9. The bottom of the limited circular seat 9 is provided with an inclined chamfer, and the provided inclined chamfer can facilitate the extrusion installation of the limited circular seat 9, and then the limited circular seat 9 can be embedded in the cavity of the needle tube 2 by extrusion. The limited circular seat 9 can limit the needle 3, so that the needle 3 can slide inside the limited circular seat 9, and the needle 3 has a boss structure. The bottom of the needle tube 3 is slidably connected to the inside of the limited circular seat 9, so the needle tube 3 will not fall out. The provided spring 8 can generate a certain thrust on the needle 3 to ensure that the needle 3 has a certain resilience performance.

[0022] The backstop groove 4 is opened at the lower end of the inner wall of the cavity of the plastic bracket 1, and the tail plug 6 is arranged inside the backstop groove 4 to limit the sealing component. The bottom of the outer wall of the needle tube 2 is threadedly connected with the tail plug 6, and the tail plug 6 is embedded in the backstop groove 4. The tail plug 6 can be finally threadedly connected to the bottom of the needle tube 2, and is also embedded in the backstop groove 4, thereby preventing the needle tube 2 from falling out. The overall assembly is simpler, and while ensuring a certain holding force between products, the products can also eliminate the hidden danger of separation during application.

[0023] Working principle: During installation, the needle tube 2 can be assembled with the plastic bracket 1 by extrusion, and the sealing ring 7 can be extruded and assembled inside the sealing groove 5, which effectively ensures the sealing and waterproof performance of the device while improving the feasibility of modular assembly. The tail plug 6 can be finally threadedly connected to the bottom of the needle tube 2, and is also embedded in the backstop groove 4, thereby preventing the needle tube 2 from falling out. The overall assembly is simpler, and while ensuring a certain holding force between the products, the products can also eliminate the hidden danger of separation during application.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spring pin assembly, comprising a plastic bracket (1), characterized in that: Also includes: A stop groove (4) is provided at the lower end of the inner wall of the cavity of the plastic support (1); A sealing groove (5) is provided at the upper end of the inner wall of the cavity of the plastic support (1); A sealing component, arranged on the inner wall of the cavity of the plastic bracket (1), and used to prevent water from entering the plastic bracket (1) and affecting its use; The tail plug (6) is arranged inside the stop groove (4) and is used to limit the sealing component.

2. A spring pin assembly according to claim 1, characterized in that: The sealing assembly comprises a needle tube (2) and a sealing ring (7); the needle tube (2) is embedded in the cavity of the plastic support (1), and the bottom of the needle tube (2) extends toward the inside of the stop groove (4); the sealing ring (7) is embedded in a groove formed at the upper end of the outer wall of the needle tube (2), and the sealing ring (7) is embedded in the inside of the sealing groove body (5).

3. A spring pin assembly according to claim 2, characterized in that: A limiting circular seat (9) is provided in the internal cavity of the needle tube (2), and an inclined chamfer is provided at the bottom of the limiting circular seat (9).

4. A spring pin assembly according to claim 3, characterized in that: A needle (3) is slidably inserted into the cavity of the limiting circular seat (9), a circular groove is provided at the bottom of the needle (3), a spring (8) is provided inside the cavity of the needle tube (2), and the top of the spring (8) is embedded in the circular groove provided at the bottom of the needle (3).

5. A spring pin assembly according to claim 2, characterized in that: The bottom of the outer wall of the needle tube (2) is threadedly connected with a tail plug (6), and the tail plug (6) is embedded in the inside of the backstop groove (4).

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