Large-current low-insertion-and-extraction-force reliable type bur structure

Abstract

The utility model discloses a large-current low-insertion-and-extraction-force reliable type bur structure which comprises a female needle and a male needle. A female pin comprises a female pin body and an elastic piece, the female pin body is made of pure copper materials, the elastic piece is arranged in an annular positioning groove and matched with the annular positioning groove, a convex hull of the elastic piece penetrates through a through groove and then extends into an inserting cavity, the elastic piece is made of beryllium copper materials, and a male pin inserting connector is detachably arranged in the inserting cavity. According to the bur structure, the insertion and extraction force between the male needle and the female needle can be effectively reduced, the connection stability between the male needle and the female needle is ensured, and convenience is brought to use of a user; during plug-in, the outer wall of the male pin connecting plug is in contact conduction with the female pin convex hull to form first contact, the outer wall of the male pin connecting plug is in contact conduction with the inner wall of the female pin insertion cavity to form second contact, transmission of larger current can be achieved through the two contacts, product quality and connection stability are improved, and circuit connection is more reliable.

Description

Technical Field

[0001] The utility model relates to the technology of connector field, in particular to a reliable turning needle structure with high current and low plugging and pulling force. Background Art

[0002] An electronic connector, also often called a circuit connector or electrical connector, is a conductive device that bridges two conductors in a circuit, allowing current or signals to flow from one conductor to the other. An electronic connector is a mechanical system that provides a detachable interface for connecting two sub-electronic systems. Simply put, a component that completes the electrical connection between circuits or electronic devices is called a connector, or the bridge between them. Examples include power plugs / sockets, IC sockets, and telephone line plugs. Electronic connectors are widely used in various electrical circuits, connecting or disconnecting current or signals. These connections can be temporary, easily pluggable, or permanent, between electrical devices or wires.

[0003] Many electronic connectors involve contact structures. Beyond meeting general performance requirements, contact structures must also ensure good contact, reliable operation, and easy maintenance. This reliability directly impacts the proper functioning of circuits and the safety of the entire host computer. Consequently, host circuits place stringent demands on the quality and reliability of electronic connectors. This high quality and reliability of contact structures have led to their widespread adoption in various systems. Common classification methods include appearance, structure, and application.

[0004] The current needle structure generally includes a male needle and a female needle. When plugging, the male needle is inserted into the female needle for connection. Since the male and female needles are in contact connection, in order to achieve better contact performance, the size of the female needle is generally made smaller than the size of the male needle. This will cause the insertion and removal force between the male and female needles to be too large, which brings inconvenience to the user. In addition, the current needle structure generally uses phosphor copper as the material of the female needle. Although it can achieve the function of conductive connection of the needle structure, the conductivity of phosphor copper is poor, resulting in the product being unsuitable for the passage of large currents, poor product quality, insufficient connection stability, unreliable circuit connection, easy damage to circuits and electrical appliances, and a large safety hazard. The product has a short service life and cannot meet existing needs. Therefore, it is necessary to study a new technical solution to improve the current needle structure. Utility Model Content

[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a reliable turning needle structure with high current and low insertion and removal force, which can effectively solve the problems of the existing turning needle structure, such as excessive insertion and removal force between the male and female needles, which brings inconvenience to users, poor conductivity of the phosphor copper female needle, resulting in the product being unsuitable for the passage of large currents, poor product quality, insufficient connection stability, unreliable circuit connection, easy damage to circuits and electrical appliances, large safety hazards, and short product service life.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A high-current, low-insertion-and-extraction-force reliable needle structure comprises a female needle and a male needle; the female needle comprises a female needle body and a spring piece, the front end of the female needle body is provided with an insertion cavity with an opening facing forward, the front end inner and outer side walls of the female needle body are penetrated to form a through groove, the through groove is communicated with the insertion cavity, the front end outer side wall of the female needle body is provided with an annular positioning groove, the annular positioning groove is communicated with the through groove, the female needle body is made of pure copper, which has good electrical conductivity and is suitable for the passage of large currents, and has good corrosion resistance, plasticity and ductility; the spring piece is provided In the annular positioning groove and adapted to the annular positioning groove, a convex bulge is provided on the inner side of the spring piece, and the convex bulge extends into the insertion cavity after passing through the through groove. The spring piece is made of beryllium copper. Beryllium copper is a high-grade elastic material with the best performance among copper alloys. It has high strength, elasticity, and hardness, and has good wear resistance, corrosion resistance, fatigue resistance, electrical conductivity, and thermal conductivity. Beryllium copper has a long life and low cost; the male needle is provided with a plug connector, which is detachably arranged in the insertion cavity. When plugged in, the outer wall of the plug connector contacts and connects with the convex bulge and the inner wall of the insertion cavity.

[0008] As a preferred solution, the convex bulge is in the shape of an elongated strip, and correspondingly, the through groove is also in the shape of an elongated strip, which is beneficial to enhancing the stability of the connection structure.

[0009] As a preferred solution, the female needle body includes a connecting part and an extension part extending backward from the connecting part, the front end of the connecting part is provided with the above-mentioned insertion cavity with the opening facing forward, the front end inner and outer side walls of the connecting part are penetrated to form the above-mentioned through groove, the front end outer side wall of the connecting part is provided with the above-mentioned annular positioning groove, the extension part is provided with an annular mounting groove at one end close to the connecting part, and is further provided with an elastic claw, which is provided in the annular mounting groove. The setting of the elastic claw makes the female needle have excellent impact resistance and shockproof performance, which is beneficial to the insertion of the female needle and the male needle and improves the quality of the product.

[0010] As a preferred solution, the elastic claw includes a main body and a plurality of elastic claw portions. The main body is arranged in the annular mounting groove, and the plurality of elastic claw portions extend forward from the main body and are suspended.

[0011] As a preferred solution, there are three elastic claws, and the three elastic claws are evenly spaced around the circumference of the main body.

[0012] As a preferred solution, the rear end of the connecting portion is provided with a first chamfered structure, and the front end of the extending portion is provided with a second chamfered structure.

[0013] As a preferred solution, the front end of the insertion cavity is provided with an annular guide surface, which is conducive to the insertion of the male needle and the female needle, is simple to operate, and brings convenience to users.

[0014] As a preferred solution, the thickness of the spring is 0.1 mm.

[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0016] The female needle includes a female needle body and a spring piece, an insertion cavity with an opening facing forward is provided at the front end of the female needle body, a through groove connected to the insertion cavity is formed through the inner and outer side walls of the front end of the female needle body, an annular positioning groove connected to the through groove is provided on the outer side wall of the front end of the female needle body, the female needle body is made of pure copper, the spring piece is set in the annular positioning groove and matched with the annular positioning groove, the bulge of the spring piece passes through the through groove and extends into the insertion cavity, the spring piece is made of beryllium copper, the male needle connector is detachably set in the insertion cavity, and when plugged in, the outer wall of the connector is in contact with the bulge and the inner wall of the insertion cavity. This turning needle structure is achieved through the pure copper female needle body and beryllium copper. The copper spring clip is arranged in a coordinated manner, which can effectively reduce the insertion and removal force between the male pin and the female pin, while ensuring the stability of the connection between the male pin and the female pin, bringing convenience to users; and it can effectively enhance the conductive performance of the product. When plugged in, the outer wall of the male pin connector contacts and conducts with the female pin bulge to form a first contact, and the outer wall of the male pin connector contacts and conducts with the inner wall of the female pin insertion cavity to form a second contact. Through the two contacts, a larger current can be transmitted, which is more suitable for the passage of large current, improving product quality, improving connection stability, making circuit connection more reliable, not easily damaging circuits and electrical appliances, improving safety performance during use, extending the service life of the product, and meeting existing needs.

[0017] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a preferred embodiment of the present utility model;

[0019] Figure 2This is a schematic diagram of the three-dimensional structure of a preferred embodiment of the present utility model from another angle;

[0020] Figure 3 This is an exploded view of a preferred embodiment of the present utility model;

[0021] Figure 4 This is an exploded view from another angle of the preferred embodiment of the present utility model;

[0022] Figure 5 It is a cross-sectional view of a preferred embodiment of the present utility model;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the spring in the preferred embodiment of the present utility model;

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the elastic claw in the preferred embodiment of the present utility model.

[0025] Description of the accompanying drawings:

[0026] 10. Female needle 11. Female needle body

[0027] 111, insertion cavity 1111, annular guide surface

[0028] 112, through groove 113, annular positioning groove

[0029] 114, connecting portion 1141, first chamfer structure

[0030] 115, extension portion 1151, second chamfer structure

[0031] 116, annular mounting groove 12, spring

[0032] 121, convex 20, male needle

[0033] 21. Plug connector 30. Elastic claw

[0034] 31. Main body 32. Elastic claw. DETAILED DESCRIPTION

[0035] Please refer to Figures 1 to 7 As shown, it shows the specific structure of a preferred embodiment of the present invention, including a female needle 10 and a male needle 20.

[0036] The female needle 10 includes a female needle body 11 and a spring 12. The front end of the female needle body 11 is provided with an insertion cavity 111 with an opening facing forward. The inner and outer side walls of the front end of the female needle body 11 are penetrated to form a through groove 112. The through groove 112 is connected to the insertion cavity 111. An annular positioning groove 113 is provided on the outer side wall of the front end of the female needle body 11. The annular positioning groove 113 is connected to the through groove 112. The female needle body 11 is made of pure copper. Pure copper has good electrical conductivity and is suitable for the passage of large currents. Pure copper The material has good corrosion resistance, plasticity and ductility; in this embodiment, the female needle body 11 includes a connecting portion 114 and an extension portion 115 extending backward from the connecting portion 114, the front end of the connecting portion 114 is provided with the above-mentioned insertion cavity 111 with the opening facing forward, the front end inner and outer side walls of the connecting portion 114 are penetrated to form the above-mentioned through groove 112, the front end outer side wall of the connecting portion 114 is provided with the above-mentioned annular positioning groove 113, and the end of the extension portion 115 close to the connecting portion 114 is provided with an annular mounting groove 116, further provided with an elastic claw 30, the elastic claw 30 is arranged in the annular mounting groove 116, the setting of the elastic claw 30 makes the female needle have good impact resistance and shockproof performance, which is beneficial to the insertion of the female needle and the male needle, and improves the quality of the product; specifically, the elastic claw 30 includes a main body 31 and a plurality of elastic claws 32, the main body 31 is arranged in the annular mounting groove 116, the plurality of elastic claws 32 extend forward from the main body 31 and are suspended; the elastic claws 32 are three, three The elastic claws 32 are evenly arranged at circumferential intervals on the main body 31; the rear end of the connecting portion 114 is provided with a first chamfered structure 1141, and the front end of the extending portion 115 is provided with a second chamfered structure 1151; the front end of the insertion cavity 111 is provided with an annular guide surface 1111, which is conducive to the insertion of the male needle and the female needle, and the operation is simple, which brings convenience to the user; the front end socket position of the female needle body 11 is a full circle structure, which can greatly improve the reliability of the connection structure compared with the traditional front end slotted structure of the sewing needle.

[0037] The spring piece 12 is arranged in the annular positioning groove 113 and is adapted to the annular positioning groove 113. A convex 121 is provided on the inner side of the spring piece 12. The convex 121 extends into the insertion cavity 111 after passing through the through groove 112. The spring piece 12 is made of beryllium copper. Beryllium copper is a high-grade elastic material with the best performance among copper alloys. It has high strength, elasticity, and hardness, and has good wear resistance, corrosion resistance, fatigue resistance, electrical conductivity, and thermal conductivity. Beryllium copper has a long life and low cost. In this embodiment, the convex 121 is long and strip-shaped, and correspondingly, the through groove 112 is also long and strip-shaped, which is conducive to enhancing the stability of the connection structure. The thickness of the spring piece 12 is 0.1 mm.

[0038] The male needle 20 is provided with a plug connector 21, which is detachably arranged in the insertion cavity 111. When plugged in, the outer wall of the plug connector 21 contacts and connects with the convex bump 121 and the inner wall of the insertion cavity 111.

[0039] The manufacturing and assembly process of this embodiment is described in detail as follows:

[0040] First, the female needle body 11 is formed with pure copper material, the spring piece 12 is formed with beryllium copper material, and the elastic claw 30 and the male needle 20 are formed; then, the spring piece 12 is installed in the annular positioning groove 113 of the female needle body 11, and the convex bump 121 of the spring piece 12 is passed through the through groove 112 of the female needle body 11 and extended into the insertion cavity 111; finally, the elastic claw 30 is installed in the annular mounting groove 116 of the female needle body 11.

[0041] When plugging, the plug connector 21 of the male pin 20 is inserted into the insertion cavity 111 of the female pin 10. At this time, the outer wall of the plug connector 21 is in contact with the convex bump 121 and the inner wall of the insertion cavity 111, which is suitable for passing large currents.

[0042] The design focus of this utility model is:

[0043] The female needle includes a female needle body and a spring piece, an insertion cavity with an opening facing forward is provided at the front end of the female needle body, a through groove connected to the insertion cavity is formed through the inner and outer side walls of the front end of the female needle body, an annular positioning groove connected to the through groove is provided on the outer side wall of the front end of the female needle body, the female needle body is made of pure copper, the spring piece is set in the annular positioning groove and matched with the annular positioning groove, the bulge of the spring piece passes through the through groove and extends into the insertion cavity, the spring piece is made of beryllium copper, the male needle connector is detachably set in the insertion cavity, and when plugged in, the outer wall of the connector is in contact with the bulge and the inner wall of the insertion cavity. This turning needle structure is achieved through the pure copper female needle body and beryllium copper. The copper spring clip is arranged in a coordinated manner, which can effectively reduce the insertion and removal force between the male pin and the female pin, while ensuring the stability of the connection between the male pin and the female pin, bringing convenience to users; and it can effectively enhance the conductive performance of the product. When plugged in, the outer wall of the male pin connector contacts and conducts with the female pin bulge to form a first contact, and the outer wall of the male pin connector contacts and conducts with the inner wall of the female pin insertion cavity to form a second contact. Through the two contacts, a larger current can be transmitted, which is more suitable for the passage of large current, improving product quality, improving connection stability, making circuit connection more reliable, not easily damaging circuits and electrical appliances, improving safety performance during use, extending the service life of the product, and meeting existing needs.

[0044] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high current, low insertion force, reliable needle structure, characterized by: It includes a female needle and a male needle; the female needle includes a female needle body and a spring piece, the front end of the female needle body is provided with an insertion cavity with an opening facing forward, the inner and outer side walls of the front end of the female needle body are penetrated to form a through groove, the through groove is connected with the insertion cavity, the front end outer wall of the female needle body is provided with an annular positioning groove, the annular positioning groove is connected with the through groove, and the female needle body is made of pure copper; the spring piece is provided in the annular positioning groove and is adapted to the annular positioning groove, the inner side of the spring piece is provided with a bulge, the bulge passes through the through groove and extends into the insertion cavity, the spring piece is made of beryllium copper; the male needle is provided with a plug connector, which is detachably provided in the insertion cavity, and when plugged in, the outer wall of the plug connector is in contact with the bulge and the inner wall of the insertion cavity for conductive connection.

2. The high-current, low-insertion-force, reliable contact structure according to claim 1, characterized in that: The convex hull is in the shape of an elongated strip, and correspondingly, the through groove is also in the shape of an elongated strip.

3. The high current, low insertion force, reliable contact structure according to claim 1, characterized in that: The female needle body includes a connecting part and an extension part extending backward from the connecting part. The front end of the connecting part is provided with the above-mentioned insertion cavity with the opening facing forward. The front end inner and outer side walls of the connecting part are penetrated to form the above-mentioned through groove. The front end outer side wall of the connecting part is provided with the above-mentioned annular positioning groove. The extension part is provided with an annular mounting groove at one end close to the connecting part, and is further provided with an elastic claw, which is arranged in the annular mounting groove.

4. The high-current, low-insertion-force, reliable contact structure according to claim 3, characterized in that: The elastic claw includes a main body and a plurality of elastic claw parts. The main body is arranged in the annular installation groove. The plurality of elastic claw parts extend forward from the main body and are suspended.

5. The high current, low insertion force, reliable contact structure according to claim 4, characterized in that: There are three elastic claws, and the three elastic claws are evenly spaced around the circumference of the main body.

6. The high current, low insertion force, reliable contact structure according to claim 3, characterized in that: The rear end of the connecting portion is provided with a first chamfered structure, and the front end of the extending portion is provided with a second chamfered structure.

7. The high current, low insertion force, reliable contact structure according to claim 1, characterized in that: The front end of the insertion cavity is provided with an annular guide surface.

8. The high current, low insertion force, reliable contact structure according to claim 1, characterized in that: The thickness of the spring is 0.1 mm.

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