Spring needle assembly and power supply assembly thereof

Abstract

The embodiment of the utility model provides a spring needle assembly which comprises a spring needle, the spring needle comprises a hollow needle sleeve, a needle body arranged in the needle sleeve, an elastic piece sleeved outside the needle body and arranged in the needle sleeve, a hollow sleeve and a power line arranged in the sleeve, the spring needle is inserted into the sleeve, and the power line is arranged in the sleeve. The needle body is connected with one end of the power line, and the other end of the power line partially extends out of the sleeve and is electrically connected with the sleeve. The needle body is directly connected with the power line to form a first conductive path; the needle body is pressed by an external contact, moves along the axis of the needle sleeve and is pressed into the needle sleeve, the outer wall of the needle body is in direct contact with the inner wall of the needle sleeve, and the needle body, the needle sleeve, the sleeve and the power line are electrically connected in sequence to form a second conductive path.

Description

Technical Field

[0001] This utility model relates to the field of electronic connection element technology, and in particular to a spring pin assembly and its power supply assembly. Background Technology

[0002] A pogo pin (also known as a probe or spring pin) is a precision component that achieves electrical connection through elastic contact. Its core purpose is to provide stable and repeatable electrical conduction in small spaces.

[0003] The existing spring needle consists of three parts: needle tip, spring, and needle tube. When the spring is compressed, the needle tip is pressed into the needle tube, and the outer wall of the needle tip is in direct contact with the inner wall of the needle tube, forming the main circuit.

[0004] Because the conductivity relies on the direct contact between the outer wall of the needle and the inner wall of the syringe, the contact area is small, making it impossible to conduct large currents. Forcing large currents through will cause severe heat generation, affecting safety during use.

[0005] Furthermore, the existing power supply components require the power cord on the control board to be inserted into the spring pin fixing hole of the support bracket before installing the spring pin. The exposed power cord is then welded to the spring pin, and the power cord is pulled back to put the spring pin in a ready-to-rivet state. The spring pin is then riveted to the spring pin fixing hole of the support bracket by machine. The installation and connection process is complicated, and this step is too difficult to weld manually, which affects production efficiency. Utility Model Content

[0006] The technical problem to be solved by this utility model embodiment is to provide a spring needle assembly that solves the problem that the small contact area between the outer wall of the needle tip and the inner wall of the needle tube makes it impossible to conduct large current, and the forced passage of large current causes heating, which seriously affects the safety of use.

[0007] The further technical problem to be solved by this utility model embodiment is to provide a power supply component that solves the problem of cumbersome and inefficient installation of spring pin components.

[0008] To solve the above technical problems, the present utility model adopts the following technical solution: a spring needle assembly, including a spring needle, the spring needle including a hollow needle sleeve, a needle body disposed in the needle sleeve, an elastic element sleeved outside the needle body and disposed in the needle sleeve, and also including a hollow sleeve and a power cord disposed in the sleeve, the spring needle being inserted into the sleeve, the needle body being connected to one end of the power cord, and the other end of the power cord extending out of the sleeve and being electrically connected to the sleeve;

[0009] The needle body is directly connected to the power line to form a first conductive path;

[0010] The needle body is pressed by an external contact and displaced along the axial direction of the needle sleeve into the needle sleeve. The outer wall of the needle body is in direct contact with the inner wall of the needle sleeve. The needle body, needle sleeve, sheath, and power line are sequentially electrically connected to form a second conductive path.

[0011] Furthermore, the needle body includes a pusher part, a limiting part, and a connecting part. A fixing cavity is provided inside the needle sleeve. The pusher part and the connecting part protrude outside the needle sleeve. The limiting part is disposed inside the fixing cavity. The elastic element abuts against the limiting part upward inside the fixing cavity.

[0012] Furthermore, the lower end of the needle sleeve is provided with a plug-in part, which is inserted into the sleeve for connection, and the connecting part protrudes from the plug-in part and extends into the sleeve to connect with the power cord.

[0013] Furthermore, the needle sleeve is provided with a first convex ring in the circumferential direction.

[0014] Furthermore, a second convex ring is provided circumferentially at the bottom of the sleeve.

[0015] Furthermore, the bottom of the sleeve has a converging portion below a second convex ring arranged in the circumferential direction.

[0016] To address the aforementioned technical problems, the present invention further employs the following technical solution: a power supply component, comprising a circuit board, a carrier with several mounting holes, a spring pin assembly as described above fixedly disposed on the circuit board, a power cord extending from the sleeve portion and electrically connected to the circuit board, and the spring pin assembly extending from the bottom of the carrier into the mounting hole for fixation, with the pin portion protruding.

[0017] Furthermore, a stepped portion is provided at the bottom of the mounting hole, and the spring pin assembly is inserted into the mounting hole. The first convex ring abuts against the stepped portion to limit the insertion depth of the spring pin assembly.

[0018] Furthermore, the circuit board is provided with several fixing holes corresponding to the mounting hole positions. The fixing holes are used for the sleeve convergence part to be inserted and fixed, and are simultaneously limited by the second convex ring.

[0019] Furthermore, the bottom of the support base is provided with several support parts that abut against the circuit board.

[0020] By adopting the above technical solution, the present utility model embodiment has at least the following beneficial effects: In the present utility model embodiment, by setting a sleeve to insert the spring needle into the sleeve, the needle body is connected to one end of the power cord, and the other end of the power cord extends out of the sleeve and is electrically connected to the sleeve, so that the needle body and the power cord are directly connected to form a first conductive path. This can prevent the spring needle from overheating by using a large current. At the same time, the outer wall of the needle body is in direct contact with the inner wall of the needle sleeve. The needle body, needle sleeve, sleeve, and power cord are electrically connected in sequence to form a second conductive path, which increases the redundancy design. When the connection between the needle body and the power cord is loose or disconnected, the current can still be supplied from the second conductive path. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the spring pin assembly in an optional embodiment of the present invention.

[0022] Figure 2 This is a three-dimensional structural diagram of the spring pin assembly in a disassembled state according to an optional embodiment of the present invention.

[0023] Figure 3 This is a cross-sectional structural diagram of the spring pin assembly in another optional embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the power supply path of the spring pin assembly in another optional embodiment of this utility model.

[0025] Figure 5 This is a three-dimensional structural diagram of the power supply component assembly in another optional embodiment of the present invention.

[0026] Figure 6 This is a three-dimensional structural diagram of the power supply component in a disassembled state according to an optional embodiment of this utility model.

[0027] Figure 7 This is a cross-sectional structural diagram of the power supply component assembly in another optional embodiment of the present invention. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention. Moreover, the embodiments and features in the embodiments of the present invention can be combined with each other unless otherwise specified.

[0029] like Figure 1-5As shown, an optional embodiment of this utility model provides a spring needle assembly, including a spring needle 1. The spring needle includes a hollow needle sleeve 10, a needle body 11 disposed within the needle sleeve 10, and an elastic element 12 sleeved outside the needle body and disposed within the needle sleeve. It also includes a hollow sleeve 2 and a power cord 3 disposed within the sleeve. The spring needle 1 is inserted into the sleeve 2. One end of the needle body 11 is connected to the power cord 3, and the other end of the power cord 3 extends out of the sleeve 2 and is electrically connected to the sleeve 2.

[0030] The needle body 11 is directly connected to the power line 3 to form a first conductive path;

[0031] The needle body 11 is pressed by an external contact and displaced along the axial direction of the needle sleeve 10 into the needle sleeve 10. The outer wall of the needle body 11 is in direct contact with the inner wall of the needle sleeve 10. The needle body 11, the needle sleeve 10, the sleeve 2, and the power line 3 are sequentially electrically connected to form a second conductive path.

[0032] In this embodiment, the spring needle 1 is inserted into the sleeve 2, so that the needle body 11 is connected to one end of the power cord 3, and the other end of the power cord 3 extends out of the sleeve 2 and is electrically connected to the sleeve 2. This allows the needle body 11 and the power cord 3 to be directly connected to form a first conductive path, which can carry a large current and avoids the spring needle 1 from overheating. At the same time, the outer wall of the needle body 11 is in direct contact with the inner wall of the needle sleeve 10. The needle body 11, the needle sleeve 10, the sleeve 2, and the power cord 3 are electrically connected in sequence to form a second conductive path, which adds redundancy. When the connection between the needle body 11 and the power cord 3 is loose or disconnected, the current can still be supplied from the second conductive path, but a large current cannot pass through.

[0033] like Figure 3 As shown, in an optional embodiment of the present invention, the needle body 11 includes a pusher portion 111, a limiting portion 112, and a connecting portion 113. A fixing cavity 100 is provided inside the needle sleeve 10. The pusher portion 111 and the connecting portion 113 protrude outside the needle sleeve. The limiting portion 112 is disposed inside the fixing cavity 100. The elastic member 12 abuts against the limiting portion 112 upward inside the fixing cavity 100.

[0034] In this embodiment, by setting the limiting part 112 inside the fixing cavity 100, the elastic member 12 abuts against the limiting part 112 upward inside the fixing cavity 100, so that when the needle body 11 is inside the needle sleeve 10, it will not be popped out by the elastic member 12 due to the limitation of the limiting part 112 and the fixing cavity 100.

[0035] like Figure 3 As shown, in another optional embodiment of this utility model, the lower end of the needle sleeve 10 is provided with a plug-in portion 101, the plug-in portion 101 is inserted into the sleeve 2 for connection, and the connecting portion 113 protrudes from the plug-in portion 101 and extends into the sleeve 2 to connect with the power cord 3.

[0036] In this embodiment, by setting the insertion part 101 to connect to the sleeve 2, the connection strength between the needle sleeve 10 and the sleeve 2 is enhanced, and the contact area between the two is increased, ensuring the reliability of conductivity.

[0037] like Figure 3 As shown, in another optional embodiment of this utility model, the needle sleeve 10 is provided with a first protruding ring 102 in the circumferential direction. In this embodiment, the first protruding ring 102 is provided to limit the installation of the spring needle assembly.

[0038] like Figure 3 As shown, in another optional embodiment of this utility model, a second convex ring 21 is provided circumferentially at the bottom of the sleeve 2. In this embodiment, the second convex ring 21 is used to limit the installation of the spring pin assembly.

[0039] like Figure 3 As shown, in another optional embodiment of this utility model, the bottom of the sleeve 2 has a converging portion 22 below the second circumferentially convex ring 21. In this embodiment, the converging portion 22 is used to position the spring pin assembly during installation.

[0040] On the other hand, such as Figure 5-7 As shown, this utility model embodiment also provides a power supply component, including a circuit board 7, a carrier 8 with a plurality of mounting holes 80, the above-mentioned spring pin assembly is fixedly disposed on the circuit board 7, the power line 3 extends out of the sleeve 2 and is electrically connected to the circuit board 7, the spring pin assembly extends from the bottom of the carrier 8 into the mounting hole 80 for fixation, and the pin part 111 protrudes out.

[0041] In this embodiment, a spring pin assembly is fixedly installed on the circuit board 7, allowing the spring pin assembly to extend from the bottom of the support 8 into the mounting hole 80 for fixation. This simplifies the manual soldering process, simplifies the installation method of the power supply component, and improves production efficiency.

[0042] like Figure 7 As shown, in another optional embodiment of the present invention, a stepped portion 81 is provided at the bottom of the mounting hole 80, the spring pin assembly is inserted into the mounting hole 80, and the first convex ring 102 abuts against the stepped portion 81 to limit the insertion depth of the spring pin assembly.

[0043] In this embodiment, a stepped portion 81 is provided at the bottom of the mounting hole 80 to guide and position the spring pin assembly before it is inserted into the mounting hole 80, ensuring that the spring pin assembly can be inserted smoothly. At the same time, after insertion, the first convex ring 102 abuts against the stepped portion 81, further enhancing the reliability of the connection.

[0044] like Figure 6As shown, in another optional embodiment of this utility model, the circuit board 7 is provided with a plurality of fixing holes 70 corresponding to the positions of the mounting holes 80. The fixing holes 70 are for the sleeve gathering part 22 to be inserted and fixed, and are limited by the second protruding ring 21.

[0045] In this embodiment, the fixing hole 70 facilitates the insertion of the converging part 22 into the fixing sleeve 2, while the second protruding ring 21 limits the movement to prevent the spring needle assembly from being compressed and breaking the fixing hole 70.

[0046] like Figure 6 As shown, in another optional embodiment of this utility model, the bottom of the support base 8 is provided with a plurality of support portions 82 that abut against the surface of the circuit board 7. In this embodiment, the support portions 82 leave a gap between the support base 8 and the circuit board 7 for installing the spring pin assembly.

[0047] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the scope of protection of the present invention.

Claims

1. A spring needle assembly, comprising a spring needle, the spring needle including a hollow needle sleeve, a needle body disposed within the needle sleeve, and an elastic element sleeved outside the needle body and disposed within the needle sleeve, characterized in that, It also includes a hollow sleeve and a power cord disposed inside the sleeve. The spring needle is inserted into the sleeve, the needle body is connected to one end of the power cord, and the other end of the power cord extends out of the sleeve and is electrically connected to the sleeve. The needle body is directly connected to the power line to form a first conductive path; The needle body is pressed by an external contact and displaced along the axial direction of the needle sleeve into the needle sleeve. The outer wall of the needle body is in direct contact with the inner wall of the needle sleeve. The needle body, needle sleeve, sheath, and power line are sequentially electrically connected to form a second conductive path.

2. The spring pin assembly as claimed in claim 1, characterized in that, The needle body includes a pusher part, a limiting part, and a connecting part. A fixed cavity is provided inside the needle sleeve. The pusher part and the connecting part protrude outside the needle sleeve. The limiting part is provided inside the fixed cavity. The elastic element abuts against the limiting part upward inside the fixed cavity.

3. The spring pin assembly as described in claim 2, characterized in that, The lower end of the needle sleeve is provided with a plug-in part, which is inserted into the sleeve for connection, and the connecting part protrudes from the plug-in part and extends into the sleeve to connect with the power cord.

4. The spring pin assembly as described in claim 3, characterized in that, The needle sleeve is provided with a first convex ring in the circumferential direction.

5. The spring pin assembly as described in claim 4, characterized in that, A second convex ring is provided circumferentially at the bottom of the sleeve.

6. The spring pin assembly as claimed in claim 5, characterized in that, The bottom of the sleeve has a constriction section below a second convex ring in the circumferential direction.

7. A power supply component, comprising a circuit board and a carrier having a plurality of mounting holes, characterized in that, The circuit board is fixedly provided with the spring pin assembly as described in any one of claims 4-6, the power line extends out of the sleeve portion and is electrically connected to the circuit board, and the spring pin assembly extends from the bottom of the carrier into the mounting hole for fixation, with the top pin portion protruding.

8. The power supply component as described in claim 7, characterized in that, The bottom of the mounting hole is provided with a stepped portion. The spring pin assembly is inserted into the mounting hole, and the first convex ring abuts against the stepped portion to limit the insertion depth of the spring pin assembly.

9. The power supply component as described in claim 8, characterized in that, The circuit board is provided with several fixing holes corresponding to the mounting hole positions. The fixing holes are used for the sleeve converging part to be inserted and fixed, and are simultaneously limited by the second convex ring.

10. The power supply component as claimed in claim 9, characterized in that, The bottom of the support base is provided with several support parts that abut against the circuit board.

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