A surface mount miniature dual-channel Pogo Pin connector

Abstract

This invention provides a surface-mount miniature dual-channel Pogo Pin connector, comprising an insulating housing body, a top cover, and two Pogo Pin conductive units disposed within the insulating housing body. The two Pogo Pin conductive units are spaced apart within the same insulating housing body, and each Pogo Pin conductive unit includes a pin tube, a pin shaft, a ball bearing, and a spring. The advantages of this invention are: the use of an integrated insulating housing body to accommodate two mutually insulated Pogo Pin conductive units forms a miniaturized dual-channel structure; each conductive unit employs a combination structure of a pin shaft, a ball bearing, a spring, and a pin tube to improve axial force transmission and reciprocating motion stability; the front end uses an elastic contact method, and the rear end uses a surface-mount output structure, balancing conductivity reliability and mounting adaptability; and it achieves a predetermined working stroke, contact pressure, and low contact resistance within a relatively small overall size, improving connection reliability.

Description

Technical Field

[0001] This invention relates to the field of electronic connector technology, specifically to a surface-mount miniature dual-channel Pogo Pin connector, which can be used for flexible electrical connections between modules, components, or components and circuit boards within electronic devices. It is particularly suitable for applications requiring connector miniaturization, surface mounting, reliable repeated contact, and dual-channel conduction. Background Technology

[0002] Pogo pin connectors are widely used in conductive connections in various electronic devices due to their elastic conductivity, repeatable contact, and strong assembly compensation capabilities. Compared to traditional wire bonding, pin-and-socket connections, or ribbon cable connections, Pogo pin connectors can achieve stable contact within a certain compression range, making them more suitable for connection scenarios requiring detachability, crimping, or automatic compensation for assembly tolerances.

[0003] As electronic products trend towards miniaturization, integration, and high density, an increasing number of connectivity scenarios require connectors to simultaneously achieve multi-path conduction, stable contact, and ease of assembly within a limited space. Existing Pogo Pin connectors still present the following challenges in such applications: 1. The overall size is relatively large, which is not conducive to miniaturization.

[0004] Existing dual-channel or multi-channel connectors typically require a large installation space, making it difficult to meet the layout requirements of compact structure products.

[0005] 2. The stability of the dual-channel integrated structure is insufficient.

[0006] When integrating two conductive units within a limited volume, improper design of the internal support, guiding, and isolation structures can easily lead to displacement, jamming, or unstable contact of the conductive components.

[0007] 3. It is difficult to balance contact pressure, conductivity stability, and service life.

[0008] When connectors are reduced in size, the available space for internal elastic components decreases, which can easily lead to insufficient contact pressure, increased contact resistance, and performance degradation after long-term use.

[0009] 4. The existing structure is not well compatible with the surface mount method.

[0010] Some connector structures are better suited for plug-in or specific assembly methods, and are not conducive to high-efficiency mass production using surface mount technology.

[0011] 5. Limited environmental adaptability.

[0012] Under conditions of welding thermal shock, high and low temperature changes, salt spray corrosion, and long-term mechanical operation, some connectors are prone to oxidation, fatigue failure, or decreased conductivity.

[0013] Therefore, it is necessary to provide a miniature Pogo Pin connector that is more compact, suitable for surface mount installation, has reliable dual-channel conduction, and is more adaptable. Summary of the Invention

[0014] In view of the above problems, the purpose of this invention is to provide a surface-mount miniature dual-channel Pogo Pin connector. By optimizing the design of the conductive unit structure, insulation support structure and surface-mount output structure, dual independent conduction, stable elastic contact and surface-mount mounting are achieved in a smaller size, thereby improving the connector's structural compactness, conductivity reliability, assembly adaptability and service life.

[0015] The present invention provides a patch-type miniature dual-channel Pogo Pin connector, comprising an insulating housing body, a top cover, and two Pogo Pin conductive units disposed within the insulating housing body; Two Pogo Pin conductive units are spaced apart within the same insulating housing body and insulated from each other to form two parallel and independent conductive channels. The insulating housing body is used to position, support, and insulate the two Pogo Pin conductive units. The top cover is located at the upper opening of the insulating housing body and is used to limit and fix the Pogo Pin conductive units to prevent them from loosening, shifting, or falling out during assembly and operation. Each Pogo Pin conductive unit includes a needle tube, a needle shaft, a ball bearing, and a spring. The needle tube serves as the external housing of the Pogo Pin conductive unit. The needle shaft is movably disposed at one end of the needle tube and reciprocates relative to the needle tube along the needle tube axis. The spring is disposed in the inner cavity of the needle tube and is used to provide elastic restoring force to the needle shaft, with one end abutting against the ball bearing and the other end abutting against the inner wall of the needle tube. The ball bearing is disposed between the needle shaft and the spring, with one side abutting against the tail end of the needle shaft and the other side abutting against the end of the spring, for transmitting axial force and improving the motion stability of the needle shaft during compression and reset. The front end of the needle shaft extends out of the outer side of the insulating housing body, forming an elastic contact end for contacting and conducting with external conductive components; the rear end of the needle tube is provided with an outlet connection part, which adopts a surface-mount conductive sheet (conductive sheet pin) for surface mounting connection with a circuit board or other conductive carrier; the outlet connection parts of the two Pogo Pin conductive units are separated from each other to keep the two conductive circuits independent of each other.

[0016] As a preferred embodiment of the present invention, the two Pogo Pin conductive units are arranged side by side in the insulating housing body and maintain a predetermined center-to-center distance, so as to meet the dual-path conduction requirements while taking into account structural compactness and insulation reliability, wherein the center-to-center distance between the two Pogo Pin conductive units is 1.27mm.

[0017] As a preferred embodiment of the present invention, the needle shaft of the Pogo Pin conductive unit has a working stroke of 1.00 mm within the needle tube. Within this working stroke range, the needle shaft can move stably relative to the needle tube after being compressed by external force, and automatically reset by spring action after the external force is released. The spring force at a working stroke of 1.00 mm is 130 g ± 20%, to ensure that the connector has a relatively stable contact pressure under actual crimping conditions.

[0018] The electrical performance parameters of the surface-mount miniature dual-channel Pogo Pin connector include: rated operating voltage of DC 3V, rated operating current of 1A, and static contact resistance of no more than 30mΩ. These parameters ensure that the connector maintains good conductivity even with a miniaturized structure.

[0019] As a preferred embodiment of the present invention, in order to meet the requirements of miniaturization design, the diameter of the contact part at the front end of the needle shaft is 0.45mm, the outer diameter of the insulating shell body is 3.00mm, the length of the insulating shell body is 9.80mm, and different length segments such as 5.00mm, 5.50mm and 6.75mm are formed locally to meet the design requirements of internal structure arrangement, assembly limit and working stroke.

[0020] As a preferred embodiment of the present invention, the needle shaft, needle tube, and ball bearing are made of conductive metal material and have a coating on their surface to improve conductivity, wear resistance, and corrosion resistance; the spring is made of a metallic elastic material with good fatigue life; the insulating housing body and the top cover are made of heat-resistant insulating material to meet the requirements of patch welding and long-term working environment.

[0021] As a preferred embodiment of the present invention, the needle shaft, needle tube, and ball bearings are all made of copper alloy with a gold-plated surface coating; the spring is made of stainless steel; and the insulating housing body and top cover are made of heat-resistant plastic. The product as a whole adopts a lead-free design and meets RoHS environmental protection requirements.

[0022] The advantages and positive effects of this invention are: 1. The present invention has the advantages of compact overall structure, suitable for miniaturization and high-density arrangement. By integrating the two conductive units of Pogo Pin into the same insulating body, dual-path conduction is achieved in a limited space, reducing the installation volume.

[0023] 2. The present invention has the advantages of having both dual-channel conduction and insulation isolation functions. The two Pogo Pin conductive units are set independently to meet dual power supply, as well as dual signal transmission or composite circuit connection.

[0024] 3. The present invention has the advantage of high contact stability. A stable internal force transmission relationship is formed between the needle shaft, ball, spring and needle tube, which helps to reduce needle shaft offset and contact instability.

[0025] 4. The present invention has the advantage of being suitable for surface mount installation. By setting a surface mount type lead-out connector, it can better adapt to surface mount processes, improve assembly efficiency and batch manufacturing consistency.

[0026] 5. The present invention has the advantages of good conductivity and lifespan, and can maintain low contact resistance, stable contact pressure and long mechanical life even under small size conditions.

[0027] 6. This invention has the advantage of strong environmental adaptability. Through reasonable material selection and surface treatment, it can meet the requirements of lead-free environmental protection, welding thermal shock, high and low temperature and other usage environments. Attached Figure Description

[0028] Figure 1 This is a front view of the overall structure of the patch-type miniature dual-channel Pogo Pin connector in this embodiment.

[0029] Figure 2 This is a side view of the overall structure of the patch-type miniature dual-channel Pogo Pin connector in this embodiment.

[0030] Figure 3 This is a cross-sectional view of the patch-type miniature dual-channel Pogo Pin connector in this embodiment.

[0031] Figure 4 This is a cross-sectional view of the internal structure of a single Pogo Pin conductive unit in this embodiment.

[0032] Reference numerals: 1. Insulating housing body; 2. Pogo Pin conductive unit; 3. Needle tube; 4. Needle shaft; 5. Ball bearing; 6. Spring; 7. Surface mount conductive sheet. Detailed Implementation

[0033] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0034] See Figure 1-4This embodiment provides a surface-mount miniature dual-channel Pogo Pin connector, including an insulating housing body 1, a top cover, and two Pogo Pin conductive units 2 disposed within the insulating housing body 1. The two Pogo Pin conductive units 2 are spaced apart within the same insulating housing body 1 and insulated from each other to form two parallel and independent conductive channels. The insulating housing body 1 is used for positioning, supporting, and insulating the two Pogo Pin conductive units 2. The top cover is disposed at the upper opening of the insulating housing body 1 to limit and fix the Pogo Pin conductive units 2, preventing them from loosening, shifting, or falling out during assembly and operation. Each Pogo Pin conductive unit 2 includes a needle tube 3, a needle shaft 4, a ball bearing 5, and a spring 6. The needle tube 3 serves as the Pogo Pin conductive unit. The outer housing of the Pin conductive unit 2; the needle shaft 4 is stepped at both ends, and is movably disposed at one end of the needle tube 3, and can reciprocate relative to the needle tube 3 along the axial direction of the needle tube 3; the spring 6 is disposed in the inner cavity of the needle tube 3 to provide elastic restoring force to the needle shaft 4, one end of which is held against the ball 5, and the other end is held against the inner wall of the needle tube 3; the ball 5 is disposed between the needle shaft 4 and the spring 5, one side of which is held against the tail end of the needle shaft 4, and the other side is held against the end of the spring 6, to transmit axial force and improve the motion stability of the needle shaft 4 during compression and reset; the front end of the needle shaft 4 extends out of the outer side of the insulating housing body 1 to form an elastic contact end for contact and conduction with external conductive parts; the rear end of the needle tube 3 is provided with an outlet connection part, which adopts a surface-mount conductive sheet (conductive sheet pin) 7 for surface mounting connection with a circuit board or other conductive carrier; the outlet connection parts of the two Pogo Pin conductive units 2 are separated from each other to keep the two conductive circuits independent.

[0035] Furthermore, in this embodiment, the two Pogo Pin conductive units 2 are arranged side-by-side within the insulating housing body 1, maintaining a predetermined center-to-center distance. This ensures both dual-path conductivity and structural compactness, as well as insulation reliability. The center-to-center distance between the two Pogo Pin conductive units 2 is 1.27 mm. The needle shaft 4 of the Pogo Pin conductive unit 2 has a working stroke of 1.00 mm within the needle tube 3. Within this working stroke range, the needle shaft 4 can move stably relative to the needle tube 3 after being compressed by external force, and automatically resets under the action of the spring 6 after the external force is released. The spring force of the spring 6 at the 1.00 mm working stroke is 130g ± 20%, ensuring a relatively stable contact pressure for the connector under actual crimping conditions. The electrical performance parameters of the surface-mount miniature dual-channel Pogo Pin connector include: rated operating voltage of DC 3V, rated operating current of 1A, and static contact resistance of no more than 30mΩ. Through the design of the above parameters, the connector can maintain good conductivity even under miniaturized structural conditions.

[0036] Furthermore, in this embodiment, to meet the requirements of miniaturization design, the diameter of the contact part at the front end of the needle shaft 4 is 0.45mm, the outer diameter of the insulating shell body 1 is 3.00mm, the length of the insulating shell body 1 is 9.80mm, and different length sections such as 5.00mm, 5.50mm and 6.75mm are formed locally to meet the design requirements of internal structure layout, assembly limit and working stroke.

[0037] Furthermore, in this embodiment, the needle shaft 4, needle tube 3, and ball bearing 5 are all made of copper alloy with a gold-plated surface coating to improve conductivity, wear resistance, and corrosion resistance. The spring 6 is made of stainless steel, and the insulating housing body 1 and top cover are made of heat-resistant plastic to meet the requirements of surface mount soldering and long-term operating environments. The product as a whole adopts a lead-free design and meets RoHS environmental requirements. It is suitable for use in electronic device connection structures where space is limited and dual-path independent conduction is required.

[0038] Furthermore, the two surface-mount conductive pads 7 in this embodiment can be designed with different mounting forms according to the mounting object and pad layout; the arrangement, center spacing, exposed length, housing size and structural proportions of the two Pogo Pin conductive units 2 can also be adjusted according to application requirements. As long as they do not deviate from the basic concept of this invention, they should be considered to fall within the protection scope of this invention.

[0039] Working principle: The needle tube 3 is fixed inside the insulating housing body 1. The needle shaft 4 is movably disposed at the front end of the needle tube 3 and can move axially. The spring 6 is disposed inside the rear side of the needle tube 3. The ball bearing 5 is disposed between the tail end of the needle shaft 4 and the spring 6. The front end of the needle shaft 4 extends out of the outer side of the insulating housing body 1 to form an elastic contact end. The rear end of the needle tube 3 forms a surface mount connector, namely a surface mount conductive sheet 7, which is used for surface mount connection with an external circuit board.

[0040] Working process: When the external connecting component contacts the front end of the needle shaft 4 and applies pressure, the needle shaft 4 moves inward along the needle tube 3, driving the ball bearing 5 to apply pressure to the spring 6. The ball bearing 5 transmits the force between the needle shaft 4 and the spring 6, allowing the needle shaft 4 to maintain a relatively stable motion state during compression and reset. The spring 6 stores elastic potential energy after being compressed. When the external force disappears, the spring 6 releases its elastic force, pushing the ball bearing 5 and the needle shaft 4 to reset outward, allowing the needle shaft 4 to return to its initial extended state. Since the two Pogo Pin conductive units 2 are independently set inside the insulating housing body 1, two electrical connections can be realized separately, thereby meeting the application requirements of dual power supply, dual signal transmission, or composite conduction.

[0041] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A surface-mount miniature dual-channel Pogo Pin connector, characterized in that, Includes an insulating housing body, a top cover, and two Pogo Pin conductive units disposed within the insulating housing body; Two Pogo Pin conductive units are spaced apart within the same insulating housing body and insulated from each other to form two parallel and independent conductive channels. The insulating housing body is used to position, support, and insulate the two Pogo Pin conductive units. The top cover is located at the upper opening of the insulating housing body and is used to limit and fix the Pogo Pin conductive units to prevent them from loosening, shifting, or falling out during assembly and operation. Each Pogo Pin conductive unit includes a needle tube, a needle shaft, a ball bearing, and a spring. The needle tube serves as the external housing of the Pogo Pin conductive unit. The needle shaft is movably disposed at one end of the needle tube and reciprocates relative to the needle tube along the needle tube axis. The spring is disposed within the inner cavity of the needle tube and provides elastic restoring force to the needle shaft. The ball bearing is disposed between the needle shaft and the spring and transmits axial force, improving the motion stability of the needle shaft during compression and reset. The front end of the needle shaft extends out of the outer side of the insulating housing body, forming an elastic contact end for contacting and conducting with external conductive components; the rear end of the needle tube is provided with an outlet connection part, which adopts a surface-mount conductive sheet for surface mounting connection with the circuit board; the outlet connection parts of the two Pogo Pin conductive units are separated from each other to keep the two conductive circuits independent of each other.

2. The surface-mount miniature dual-channel Pogo Pin connector according to claim 1, characterized in that, The two Pogo Pin conductive units are arranged side by side within the insulating housing body, maintaining a predetermined center-to-center distance, so as to meet the dual-path conduction requirements while taking into account structural compactness and insulation reliability. The center-to-center distance between the two Pogo Pin conductive units is 1.27 mm.

3. A surface-mount miniature dual-channel Pogo Pin connector according to claim 1, characterized in that, The needle shaft of the Pogo Pin conductive unit has a range of motion of 1.00 mm within the needle tube.

4. A surface-mount miniature dual-channel Pogo Pin connector according to claim 1, characterized in that, The diameter of the contact part at the front end of the needle shaft is 0.45mm, the outer diameter of the insulating shell body is 3.00mm, and the length of the insulating shell body is 9.80mm.

5. A surface-mount miniature dual-channel Pogo Pin connector according to claim 1, characterized in that, The needle shaft, needle tube, and ball bearing are made of conductive metal material and have a plating layer on their surface; the spring is made of metal elastic material; and the insulating housing body and top cover are made of heat-resistant insulating material.

6. A surface-mount miniature dual-channel Pogo Pin connector according to claim 5, characterized in that, The needle shaft, needle tube, and ball bearings are all made of copper alloy with a gold-plated surface; the spring is made of stainless steel; and the insulating housing body and top cover are made of heat-resistant plastic.

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