Hollow-core pin terminal

Abstract

The utility model provides a hollow-core contact pin terminal, which comprises a circuit board, a contact pin terminal body is embedded in the circuit board, and a reset spring is arranged in the contact pin terminal body. According to the hollow-core pin terminal, the shielding sleeve, the insulating sleeve, the rotating shaft, the elastic metal sheet, the reset spring and other structures are arranged, the shielding sleeve tightly wraps the terminal body and internally generates a reverse magnetic field to resist external electromagnetic interference and restrain self radiation, the insulating sleeve is nested outside the shielding sleeve, insulation and electric leakage prevention are achieved, and equipment and personal safety is guaranteed; the rotating shaft is connected in series with the fixing block and the elastic metal sheet, the elastic metal sheet is enabled to rotate flexibly, the reset spring is connected with the fixing plate through the hanging ring and the hook, the assembly is fast, the disassembly is convenient when a fault occurs or a part is upgraded and replaced, energy is stored through compression, rebounding assistance is realized, the elastic metal sheet is ensured to reset timely, stable work after a terminal is plugged is maintained, and a wire is clamped without loosening; and the reliable connection efficiency of the hollow-core pin terminal in a complex electrical scene is realized in all directions.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrical connection parts more particularly, relate to a kind of hollow pin terminal. BACKGROUND

[0002] In various electronic equipment, electrical system and industrial automation production line, pin terminal as key electrical connection component, plays the important role of transmission current and signal, in today's various advanced electronic equipment, complex and huge electrical system, even efficient industrial automation production line, pin terminal undoubtedly plays the indispensable key role, like the "nerve synapse" in precision circuit network, stably bears the heavy responsibility of current delivery and signal transmission, maintains the normal operation of entire system.

[0003] But the hollow pin terminal of prior art has the following problems when using:

[0004] In complex and frequent vibration environment, pin terminal is prone to looseness due to vibration, and once the terminal connection is loose, the electrical transmission path is immediately damaged, signal distortion, current interruption and other chaos follow, thereby affecting the electrical connection reliability, leading to equipment failure and even safety hazard.

[0005] The utility model can play the electrical connection of firm and convenient, with the help of elastic sheet flexible adaptation different wire diameter conductor by rotating shaft, close fit ensures low resistance conduction, cooperate reset spring maintains clamping force, guarantee current and signal continuous, stable transmission under various complex working conditions, avoid connection looseness to cause signal interruption or transmission bad, at the same time, utilize shielding sleeve to shield external electromagnetic interference, prevent its influence internal signal quality, prevent self electromagnetic radiation interference surrounding element, insulation sleeve all-time isolation pin terminal and external conductor body contact possibility, eliminate short circuit, leakage hazard. UTILITARY MODEL CONTENT

[0006] The utility model aims at solving the technical problem of the above background art, and provides a kind of hollow pin terminal.

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of hollow pin terminal, comprising: circuit board, the pin terminal body is embedded and installed on the circuit board, reset spring is provided in the pin terminal body, the pin terminal body is hollow cavity and is provided, the fixed block is fixedly installed at both ends of the inner wall of the pin terminal body in equal distance, the inner side surface of the fixed block is rotatably connected with elastic sheet, the inner side surface below the fixed block and the bottom of elastic sheet are fixedly installed with fixed plate, and reset spring is fixedly installed between the fixed plate.

[0008] Further preferred: the upper end of the circuit board is provided with an insertion hole, the upper end of the circuit board is provided with guide blocks at equal distances, the guide blocks are arranged above the insertion hole, the inner wall of the insertion hole is fixedly installed with compression springs at equal distances, and the compression springs are movably connected with the surface of the pin terminal body.

[0009] Further preferred: the surface of the pin terminal body is nested with a shielding sleeve, the outer surface of the shielding sleeve is nested with an insulating sleeve, and the surface of the insulating sleeve is movably connected with the compression spring.

[0010] Further preferred: the middle part of the outer side of the fixed block is movably connected with a rotating shaft, and the other end of the rotating shaft is fixedly connected with the elastic metal sheet.

[0011] Further preferred: the inner side of the fixed plate fixedly installed on the inner side of the fixed block and the bottom of the fixed plate of the elastic metal sheet are both fixedly installed with a hanging ring, and the hanging ring is detachably connected with the reset spring.

[0012] Further preferred: the two ends of the reset spring are both fixedly installed with a base, the outer end surface of the base is fixedly installed with a hook, and the hook is detachably connected with the hanging ring.

[0013] Beneficial effects:

[0014] 1. By setting the shielding sleeve and the insulating sleeve, the shielding sleeve closely fits the surface of the pin terminal body, and materials with excellent conductivity such as copper foil and tinned copper braid are often used. When the outside is filled with various electromagnetic interference sources, the shielding sleeve can sensitively perceive, according to the principle of electromagnetic induction, and the interference electromagnetic waves acting on the shielding sleeve will cause an induced current to be generated on its surface instantaneously. This induced current immediately generates a counter magnetic field, which, based on Lenz's law, antagonizes the interference magnetic field invading from the outside, forming an invisible but powerful electromagnetic barrier that firmly blocks the penetration of external electromagnetic waves into the core conductive area of the pin terminal. This ensures the purity of the internal transmitted electrical signals or current, maintains signal integrity, and at the same time, the shielding sleeve can also suppress the leakage of electromagnetic radiation from the pin terminal itself, effectively restricting its own radiation range, preventing false triggering or data read / write errors on adjacent memory modules, microprocessors, etc., and maintaining the electromagnetic compatibility of the entire circuit system. The insulating sleeve is made of high-insulation-performance plastics such as polyvinyl chloride (PVC) and polytetrafluoroethylene (PTFE), which is seamlessly nested with the shielding sleeve. In daily use, the environment of the equipment is complex and variable, and it may encounter humid air and dust particles. The insulating sleeve prevents the pin terminal from being conductive and leaking due to these foreign matters and the conductive bodies such as the equipment shell and the adjacent metal frame.

[0015] 2. By setting the rotating shaft and elastic sheet, the rotating shaft as the connecting key of the elastic sheet and the fixed block, flexible rotation, when inserting the external component, the elastic sheet freely rotates with the rotating shaft, self-adapting adjustment angle, closely fitting different outer diameter of the inserted object, adapting to various wire specifications, widely used in smart home and various systems, reducing terminal adaptation trouble, at the same time, the elastic sheet has good conductivity, the restoring force generated by deformation ensures that the contact with the wire is tight, maintains low resistance path, resists industrial production line vibration and other interference, ensures stable electrical connection, prevents failure, when plugging, its soft deformation and stable reset characteristics improve the operation feeling, avoid component damage, prolong the service life;

[0016] 3. By setting the hanging ring, reset spring and hook, when assembling, the worker hangs the hook at both ends of the spring on the hanging ring of the fixed block and the elastic sheet fixing plate, so that the installation can be quickly completed, the production efficiency is improved, and the automatic production is beneficial, when maintaining, if the spring fails or needs to be upgraded and replaced, the hook is taken down with tweezers and other tools, so that it can be easily removed or replaced without disassembling the complex structure, reducing downtime, enhancing the convenience of after-sales maintenance and product upgrade, and in performance, they are closely connected and can accurately conduct spring potential energy, so that the elastic sheet is stressed or rebounds stably, ensuring that the terminal works normally after plugging, and maintaining reliable electrical connection;

[0017] 4. As described above, the hollow pin terminal is provided with a shielding sleeve, an insulating sleeve, a rotating shaft, an elastic sheet and a reset spring, the shielding sleeve is made of copper foil and other conductive materials, and is tightly wrapped around the terminal body to resist external electromagnetic interference with an endogenous reverse magnetic field, constrain its own radiation, protect the signal pure, maintain system electromagnetic compatibility, the insulating sleeve is made of high-performance plastic, is nested outside the shielding sleeve, is insulated and prevents electric leakage, ensures the safety of equipment and personnel, and stably supports the spring force to maintain the terminal posture during plugging displacement, the rotating shaft is connected with the fixed block and the elastic sheet, so that the latter rotates flexibly, the reset spring is connected with the fixed plate through the hanging ring and the hook, so that the assembly is fast and convenient to disassemble when encountering failure or upgrading and replacing parts, the reset spring compresses energy storage and rebound power, so that the elastic sheet resets in time, maintains stable work after plugging the terminal, clamps the wire without loosening, and achieves reliable connection performance of the hollow pin terminal in complex electrical scenes. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model.

[0019] Figure 2 It is a top view structure schematic view of the utility model.

[0020] Figure 3 It is a pin terminal internal plane structure schematic view of the utility model.

[0021] Figure 4The utility model discloses a place amplification structure schematic diagram of A.

[0022] Figures 1-4 Middle: 1, circuit board, 101, insert hole, 102, guide block, 103, compression spring, 2, pin terminal body, 201, shielding sleeve, 202, insulating sleeve, 203, fixed block, 204, pivot, 205, elastic metal sheet, 206, fixed plate, 207, hanging ring, 3, reset spring, 301, base, 302, hook. DETAILED DESCRIPTION

[0023] The utility model discloses an embodiment of the utility model will be combined with the drawings in the embodiment of the utility model to make the description more clear and complete. Figures 1-4 The technical scheme in the embodiment of the utility model is clearly and completely described.

[0024] Please refer to Figures 1-4The utility model discloses an embodiment of a kind of hollow pin terminal, comprising: circuit board 1, embedded installation has pin terminal body 2 on circuit board 1, reset spring 3 is provided in pin terminal body 2, pin terminal body 2 inside is hollow cavity and is set, the inside wall of pin terminal body 2 is fixedly installed with fixed block 203 at both ends, the inside face of fixed block 203 is rotatably connected with elastic sheet 205, the inside face of fixed block 203 below is fixedly installed with fixed plate 206 with the bottom of elastic sheet 205, reset spring 3 is fixedly installed between fixed plate 206, insertion hole 101 is set on the upper end of circuit board 1, guide block 102 is set at equal distance around on the upper end of circuit board 1, guide block 102 is set on insertion hole 101 upper, insertion hole 101 inside wall is fixedly installed with compression spring 103 at equal distance around, compression spring 103 is movably connected with the surface of pin terminal body 2, the middle part of the outside face of fixed block 203 is rotatably connected with pivot 204, the other end of pivot 204 is fixedly connected with elastic sheet 205, when not inserting wire or plug etc. connecting component, pin terminal body 2 stably embeds and installs on circuit board 1.Reset spring 3 is in natural or pre-compression state, its both ends are fixed between fixed block 203 by fixed plate 206, maintain the initial position of elastic sheet 205.Elastic sheet 205 is under the connection of pivot 204, relative fixed block 203 is outwardly opened a certain angle posture, waits for insertion operation, at this time, they jointly constitute a certain elastic accommodation space cavity structure with inside hollow.Guide block 102 and compression spring 103 around setting on the periphery of insertion hole 101 on circuit board 1 also are in idle state, compression spring 103 slightly resists the surface of pin terminal body 2, provide certain friction to keep the positional stability of pin terminal body 2, when the wire or adapter plug needing to be connected begins to insert pin terminal body 2, first contact guide block 102.The function of guide block 102 is to guide insertion component accurately to aim at insertion hole 101, avoid deviation in insertion process, ensure to enter the hollow cavity of pin terminal body 2 smoothly.With the gradually deepening of insertion component, its outer wall begins to extrude elastic sheet 205.Because elastic sheet 205 is rotatably connected with fixed block 203 by pivot 204, they will elastically deform inward around pivot 204, gradually adhere to the outer wall of insertion component, reset spring 3 is further compressed in this process, store elastic potential energy, prepare for subsequent reset action.Meanwhile, pin terminal body 2 is under the action of insertion force, overcome the resistance of compression spring 103, slightly expand to the inner wall of insertion hole 101, compression spring 103 is compressed, its reaction force ensures that pin terminal body 2 still keeps stability, when insertion component completely inserts pin terminal body 2 to reach predetermined depth, elastic sheet 205 is tightly clamped to the outer wall of insertion component under the dual action of reset spring 3 and its elastic restoring force, realize close mechanical contact and reliable electrical connection.At this time, the compression spring 103 is also maintained in a compressed balanced state, continuously giving the pin terminal body 2 a supporting force, together with the fixed structure of the pin terminal body 2 embedded in the circuit board 1, ensuring the stability of the pin terminal body 2, preventing it from shaking up and down due to slight vibration and other factors, thereby ensuring the stability of the entire connection circuit, ensuring that the current or signal can be smoothly transmitted through the pin terminal body 2. When the connection component needs to be pulled out, an outward pulling force is applied. As the pulling force gradually increases, the pin insertion component begins to move outward, overcoming the clamping friction of the elastic metal sheet 205 and the partial resistance of the compression spring 103. The elastic metal sheet 205 gradually spreads outward under the action of the pulling force and returns to an angle close to the initial angle. The reset spring 3 gradually releases the stored elastic potential energy as the elastic metal sheet 205 spreads out and returns to a relatively relaxed state until the pin insertion component is completely pulled out and the entire hollow pin terminal returns to the initial standby state, ready for the next connection operation.

[0025] In the embodiment of the utility model, the pin terminal body 2 surface is nested with shielding sleeve 201, shielding sleeve 201 outer surface is nested with insulating sleeve 202, insulating sleeve 202 surface is movably connected with compression spring 103, shielding sleeve 201 is closely nested in pin terminal body 2 surface, it is usually made of metal material, such as copper foil, tinned copper braid net etc. with good conductivity material. Its main function is to block external electromagnetic interference signals from entering the pin terminal and affecting signal transmission quality, and to prevent electromagnetic radiation generated by the pin terminal itself from leaking outward and interfering with other sensitive electronic components in the surrounding, ensuring the purity of the current or signal transmitted by the pin terminal. When external electromagnetic waves try to invade, the shielding sleeve 201 will generate induced current due to its good conductivity, and this induced current will further generate a reverse magnetic field. According to Lenz's law, the reverse magnetic field will offset the influence of external electromagnetic waves, preventing them from penetrating the key conductive area of the pin terminal. The insulating sleeve 202 is wrapped around the outer surface of the shielding sleeve 201 and is usually made of high-performance insulating plastic such as polyvinyl chloride (PVC) and polytetrafluoroethylene (PTFE). Its core task is to prevent the pin terminal from accidentally contacting conductive objects in the external environment, causing short circuits or electrical accidents, and to ensure the safety of the entire circuit system and the operator. During equipment assembly, daily use and maintenance, the insulating sleeve 202 isolates the pin terminal from possible conductive contact paths such as the equipment shell and other metal components. When the pin terminal body 2 has a vertical displacement during insertion or removal, the surface of the insulating sleeve 202 smoothly slides in contact with the compression spring 103, and the elastic force of the compression spring 103 is evenly distributed on the surface of the insulating sleeve 202, preventing damage to the insulating sleeve 202 due to excessive local pressure. At the same time, the insulating sleeve 202 also provides a stable contact surface for the compression spring 103, maintaining the stable posture of the pin terminal body 2 during dynamic operation and ensuring the normal operation of the entire pin terminal structure.

[0026] In the embodiment of the utility model, the inner side of the fixed plate 206 fixedly installed on the inner side of the fixed block 203 and the bottom of the fixed plate 206 of the bottom of the elastic sheet 205 are all fixedly installed with the hanging ring 207, the hanging ring 207 is detachably connected with the reset spring 3, the both ends of the reset spring 3 are all fixedly installed with the base 301, the outer end surface of the base 301 is all fixedly installed with the hook 302, the hook 302 is detachably connected with the hanging ring 207, in the production and assembly link of the hollow pin terminal, the worker can conveniently install the reset spring 3 in place. Only need to align the hook 302 on the base 301 with the hanging ring 207 on the fixed block 203 and the fixed plate 206 of the bottom of the elastic sheet 205, and gently hang the buckle to complete the connection operation. This greatly improves the assembly efficiency, reduces the requirement for the skill proficiency of the worker, and in the large-scale automatic production line, the automatic equipment can also more efficiently and accurately perform this simple buckling action, reduce the production cycle and cost. When the equipment is used for a period of time, if the reset spring 3 appears elastic attenuation, fatigue fracture and other faults due to frequent stretching and contraction, the maintenance personnel do not need to disassemble the whole pin terminal body 2 or the complex circuit board connecting structure, only need to use simple tools (such as tweezers) to take down the hook 302 from the hanging ring 207, can quickly remove the damaged reset spring and replace the new spring part. Similarly, in the product upgrading process, if it is necessary to replace the reset spring with different elastic coefficients to adapt to the new electrical performance requirement, it can also be easily realized, greatly improving the convenience and upgradability of product after-sales maintenance, reducing equipment downtime maintenance time, and ensuring production continuity. Although the hanging ring 207 and the hook 302 are detachable structures, they can effectively transmit the elastic force of the reset spring 3 in the connected stable state. The hook 302 is tightly buckled in the hanging ring 207, when the elastic sheet 205 is deformed inwardly under external force, causing the reset spring 3 to be compressed, the elastic potential energy accumulated by the spring can be accurately and stably transmitted to the elastic sheet 205 and the fixed block 203 through the tightly connected hanging ring 207 and hook 302. Once the external force is removed, the reset spring 3 releases the elastic potential energy and rebounds, and also relies on this reliable connection to make the elastic sheet 205 quickly return to the initial position, ensuring that the pin terminal can work stably after each plugging operation, maintaining the appropriate clamping force on the wire and other connecting components, and ensuring the reliability of electrical connection.

[0027] Working principle: When the wire or adapter plug that needs to establish an electrical connection is close to the pin terminal, it first contacts the guide block 102 that is wrapped around the insertion hole 101 on the circuit board 1. The guide block 102, with its special arc-shaped design, precisely guides the insertion component to the center of the insertion hole 101. As the insertion component continues to penetrate, the outer wall gradually presses the elastic metal sheet 205. The elastic metal sheet 205, which is flexible and elastic around the pivot 204, tightly fits the outer wall of the insertion component, achieving initial mechanical contact and positioning. In this process, due to the displacement of the elastic metal sheet 205, the reset spring 3 connected between the fixed plate 206 at the bottom of the elastic metal sheet 205 and the fixed block 203 is further compressed, stably storing elastic potential energy, ready for subsequent rebound assistance. At the same time, the pin terminal body 2, under the insertion force of the insertion component, overcomes the resistance of the compression spring 103, slightly expands to the inner wall of the insertion hole 101, and the compression spring 103 is uniformly compressed, generating a counterforce that prevents the pin terminal body 2 from over-expanding and deforming, and provides stable support to the pin terminal body 2 from all directions, ensuring that the pin terminal body 2 remains stable during the entire insertion process and does not tilt or shake, which can affect the connection effect. When the insertion component is fully inserted into the pin terminal body 2 to the predetermined depth, the elastic metal sheet 205, under the dual strong action of the elastic potential energy accumulated by the reset spring 3 and the elastic restoring force of itself, tightly clamps the outer wall of the insertion component like a powerful clamp, achieving close mechanical contact and ensuring low contact resistance, thereby establishing a reliable electrical connection channel. At this time, the current or signal can be smoothly transmitted through the pin terminal body 2 to meet the device circuit operation requirements. At the same time, the compression spring 103 also maintains a compressed and balanced state, continuously providing upward support to the pin terminal body 2, cooperating with the fixed structure of the pin terminal body 2 embedded in the circuit board 1, and ensuring the stability of the pin terminal body 2 during operation, effectively resisting the risk of connection loosening caused by external interference factors such as device vibration and air flow impact, and maintaining the continuity and stability of signal transmission. When the device needs to be maintained, the circuit needs to be adjusted, or the component needs to be replaced, the operator applies an outward pulling force to the insertion component. Initially, the pulling force needs to overcome the clamping friction between the elastic metal sheet 205 and the outer wall of the insertion component. As the pulling force gradually increases, the insertion component begins to move slowly outward, the elastic metal sheet 205 gradually expands outward under the traction of the pulling force, and its angle approaches the initial state, and the clamping force on the insertion component gradually weakens. At the same time, the reset spring 3 gradually releases the elastic potential energy stored earlier as the elastic metal sheet 205 expands, smoothly returning to a relatively relaxed state, pushing the elastic metal sheet 205 to recover to the original position faster and further assisting the removal of the insertion component.During this period, the surface of the insulation sleeve 202 smoothly slides in contact with the compression spring 103, ensuring that the elastic force of the compression spring 103 is evenly distributed, avoiding local damage to the insulation sleeve 202, maintaining the integrity and functionality of the entire structure. When the insertion part is completely separated from the pin terminal body 2, the entire hollow pin terminal returns to the initial standby state. The elastic metal sheet 205 returns to the initial angle of outward expansion, the reset spring 3 remains relaxed, the compression spring 103 returns to the initial position of slightly resisting the surface of the pin terminal body 2, the shielding sleeve 201 and the insulation sleeve 202 are still firmly wrapped, and the pin terminal body 2 is stably embedded in the circuit board 1.

Claims

1. A hollow core pin terminal, comprising: The utility model provides a line board (1), install the pin terminal body (2) on the line board (1) embedded, reset spring (3) are provided inside the pin terminal body (2), it is characterized by: the pin terminal body (2) inside is hollow cavity setting, the fixed block (203) are fixedly installed to both ends of inside wall inside the pin terminal body (2) equal distance, the inside surface of fixed block (203) all rotatoryly connected with elastic sheet (205), the inside surface of fixed block (203) below and elastic sheet (205) bottom all fixedly installed with fixed plate (206), reset spring (3) are fixedly installed between fixed plate (206).

2. The hollow core pin terminal of claim 1, wherein: The line board (1) upper end is provided with insertion hole (101), the line board (1) upper end is provided with guide block (102) equal distance around, the guide block (102) is arranged above insertion hole (101), the inside wall of insertion hole (101) is fixedly installed with compression spring (103) equal distance around, the compression spring (103) is movably connected with the surface of pin terminal body (2).

3. A hollow core pin terminal according to claim 2, wherein: The surface of pin terminal body (2) is nested with shielding sleeve (201), the outer surface of shielding sleeve (201) is nested with insulating sleeve (202), the surface of insulating sleeve (202) is movably connected with compression spring (103).

4. The hollow core pin terminal of claim 1, wherein: The outer side of fixed block (203) middle part rotatoryly connected with pivot (204), the other end of pivot (204) is fixedly connected with elastic sheet (205).

5. The hollow core pin terminal of claim 1, wherein: The inside surface of fixed plate (206) fixedly installed in the inside surface of fixed block (203) and the bottom of fixed plate (206) bottom fixedly installed with hanging ring (207), the hanging ring (207) is detachably connected with reset spring (3).

6. A hollow core pin terminal according to claim 5, wherein: The both ends of reset spring (3) are fixedly installed with base (301), the outer end of base (301) is fixedly installed with hook (302), the hook (302) is detachably connected with hanging ring (207).

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