Pin structure about electrical connection stability of torque angle sensor

Abstract

The utility model discloses a Pin structure related to the electrical connection stability of a torque angle sensor, relates to the field of sensor Pin, and solves the problems of tedious operation, low working efficiency and limited stability of welding type assembly between a PIN main body and a PCB (Printed Circuit Board) in the prior art, and adopts the following scheme: the Pin structure comprises the PCB and the PIN main body, the PIN main body is composed of a connecting part, an anti-rotation part and a positioning part, and the PIN main body is clamped in a PCB hole through the connecting part; the connecting part is of a fisheye structure, the size of the upper end of the connecting part is small, the size of the middle of the connecting part is large, and a rectangular through hole is further formed in the connecting part; according to the Pin structure related to the electrical connection stability of the torque angle sensor, through the arrangement of the connecting part structure in the PIN main body, the PIN main body can be pressed in a PCB hole in a PCB, that is, the PIN main body can be pressed on the PCB under the non-welding condition, and meanwhile, the material of the Pin is selected, so that the electrical connection stability of the Pin is improved. Therefore, the plug-in pin plays a role in reliable connection and long-term stable operation in the sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of sensor Pin pins, and particularly to a Pin pin structure for the electrical connection stability of a torque angle sensor. Background Technique

[0002] A PIN pin is a metal substance used in a connector to complete the conductive transmission of electrical signals;

[0003] After retrieval, in the application with the patent publication number 214898964U, a PIN pin structure is disclosed, which includes a PIN pin and a barrel. A first connection part is arranged at the inserting end of the PIN pin, and a second connection part is arranged at the opening end of the barrel. The first connection part and the second connection part are mutually embedded to realize the separable connection of the PIN pin and the barrel. The utility model respectively arranges a first connection part and a second connection part that can be mutually embedded at the inserting end of the PIN pin and the opening end of the barrel to improve the smoothness of the assembly contact surface between the PIN pin and the barrel, so that the PIN pin and the barrel are tightly combined and are not easy to fall off during use. Further, the utility model arranges an external spiral or groove on the outer wall of the first connection part, and arranges an internal spiral or protrusion on the inner wall of the second connection part, so as to realize the mutual clamping and control of the PIN pin and the barrel while the assembly contact surface between the PIN pin and the barrel is uneven, which is convenient for the assembly and disassembly of the PIN pin and the barrel;

[0004] At present, the electrical connection of torque angle sensors in the market generally adopts the process method of welding the metal Pin pins and the PCBA pad holes. The characteristic of this connection method is that a welding process is required, and the reliability of the welding quality needs to be strictly controlled to meet the electrical connection stability of the sensor. There is a risk of loosening under the impact of a frequently and violently vibrating environment during welding connection, which reduces the electrical connection stability.

[0005] Therefore, we propose a Pin pin structure for the electrical connection stability of a torque angle sensor. Content of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the utility model provides a Pin pin structure for the electrical connection stability of a torque angle sensor, which solves the problems that the welding type assembly operation between the existing PIN pin main body and the PCB board is cumbersome, the work efficiency is low, and the stability is limited.

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions: a Pin pin structure for the electrical connection stability of a torque angle sensor, including a PCB board and the PIN pin main body assembled thereon. Eight groups of PCB holes are opened on the PCB board. The PIN pin main body is composed of a connection part, an anti-rotation part and a positioning part, and the PIN pin main body is clamped in the PCB hole through the connection part;

[0008] The connecting part is a fish-eye structure. The upper end of the connecting part is small in size, the middle part is large in size and has a circular arc transition. A rectangular through-hole is also provided in the connecting part;

[0009] Among them, the structure of the Pin-pin matching part is fish-eye shaped, with a small upper end size, a large middle size and a circular arc transition, so that it has a guiding function when inserted into the PCBA hole. There is a long rectangular through-hole inside, and its hollow design is beneficial to realizing the functional requirements of the fish-eye structure with inward contraction toughness and outward rebound tension. The above structural design can meet the interference fit between the Pin-pin fish-eye structure and the PCBA hole, and at the same time achieve the stability of electrical connection by the reliability of mechanical properties.

[0010] Preferably, the base material of the connecting part is CuNiSi;

[0011] Among them, using CuNiSi material as the base material, it is a high-performance copper alloy with high conductivity, high strength, good corrosion resistance and excellent cold and hot forming properties. It also has excellent bending performance and mechanical property capabilities such as stress relaxation resistance. Its material tensile strength is 410 - 470 Mpa, and the minimum yield strength is 360 Mpa, so as to meet the mechanical requirements of the Pin-pin fish-eye structure for materials.

[0012] Preferably, the appearance coating of the connecting part is provided with a bottom layer and a surface layer. The bottom layer material is Ni, and the surface layer material is Sn;

[0013] Among them, the definition of the appearance coating: the bottom layer material is Ni, with a thickness of 1.5 - 3 μm, and the surface layer material is Sn, with a thickness of 1.5 - 2.5 μm, so as to meet the requirements of small contact resistance and stable electrical performance in the electrical connection between the Pin-pin fish-eye structure and the PCBA copper hole.

[0014] Preferably, the specification of the optical hole of the PCB hole in the PCB board is Ф1.1 ± 0.05, and the surface layer of the PCB hole is plated with an Sn layer same as the surface layer raw material of the connecting part;

[0015] Among them, the PCBA optical hole is Ф1.1 ± 0.050, with a copper Cu thickness of 20 - 50 μm + a tin Sn thickness of 1 - 10 μm. The tin Sn plated on its surface layer is the same as the electroplated metal on the surface layer of the Pin-pin, which can ensure the chemical stability of the contact part between the two and realize the reliability of the electrical connection performance.

[0016] Preferably, the thickness of the PIN-pin body is Ф1.2 ± 0.03 mm, and the aperture specification of the PCB hole is Ф1.03 + 0.04 / - 0.06 mm adapted to its specification;

[0017] Among them, the settings of the thickness of the Pin pin and the aperture specifications of the PCBA can meet the interference fit between the Pin pin and the PCBA hole. A reasonable value needs to be given for the definition of the size range of the mating part. If the size range is not designed reasonably, the interference amount will be too large or too small. When it is too large, the plug-in assembly is difficult, resulting in the Pin pin being difficult to insert into the PCBA hole and being easily deformed, which reduces the mechanical properties of the Pin pin and the electrical connection stability; when the interference amount is too small, the mechanical properties of the Pin pin are not fully utilized and will also reduce the stability of the electrical connection. Therefore, through comprehensive analysis, evaluation and verification, it is concluded that when the thickness of the Pin pin is Ф1.2±0.03mm and the PCBA aperture is Ф1.03+0.04 / -0.06mm, it is beneficial to assembly and can ensure the stable and reliable electrical connection.

[0018] The present utility model provides a Pin pin structure for the electrical connection stability of a torque angle sensor. It has the following beneficial effects:

[0019] 1. For the Pin pin structure for the electrical connection stability of the torque angle sensor, through the setting of the connection part structure in the PIN pin body, it can be pressed into the PCB hole on the PCB board, that is, the PIN pin body can be crimped on the PCB board without welding. At the same time, by selecting the material of the Pin pin, designing a reasonable structure and verifying and determining the size, the plug-in Pin pin plays a role of reliable connection and long-term stable operation in the sensor. This connection method of the crimping process can meet the electrical connection function of the sensor without welding, solving the problems of cumbersome welding-type assembly operation, low work efficiency and limited stability between the existing PIN pin body and the PCB board;

[0020] 2. For the Pin pin structure for the electrical connection stability of the torque angle sensor, through the setting of its material, while reducing a welding process and related tooling, shortening the production cycle, it can further reduce the manufacturing cost, enabling the product price to have more competitive advantage space in the market competition, increasing the market share, increasing revenue and ensuring practicality. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the present utility model;

[0022] Figure 2 is a schematic structural diagram of the PIN pin of the present utility model;

[0023] Figure 3 is a schematic structural diagram of the PCB board of the present utility model.

[0024] In the figure: 1. PIN pin body; 11. Connection part; 12. Anti-rotation part; 13. Positioning part; 2. PCB board; 21. PCB hole. Detailed Embodiments

[0025] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-3 , the embodiments of the present utility model provide a technical solution: a Pin structure for the electrical connection stability of a torque angle sensor, including a PCB board 2 and a PIN pin body 1 assembled thereon. There are eight groups of PCB holes 21 opened on the PCB board 2. The PIN pin body 1 is composed of a connecting portion 11, an anti-rotation portion 12 and a positioning portion 13, and the PIN pin body 1 is clamped in the PCB hole 21 through the connecting portion 11; the connecting portion 11 is a fish-eye structure, the upper end of the connecting portion 11 is small in size, the middle is large in size and has an arc transition, and a rectangular through hole is also provided in the connecting portion 11; among them, the structure of the matching part of the Pin is fish-eye-shaped, the upper end part is small in size, the middle is large in size and has an arc transition, so that it has a guiding effect when inserted into the PCBA hole, and there is a long rectangular through hole inside. The hollow design is beneficial to realizing the functional requirements that the fish-eye structure has the toughness to shrink inward and the tension to rebound outward. The above structural design can meet the interference fit between the fish-eye structure of the Pin and the PCBA hole, and at the same time achieve the stability of electrical connection by the reliability of mechanical properties.

[0027] Among them, for the Pin structure for the electrical connection stability of the torque angle sensor, through the setting of the structure of the connecting portion 11 in the PIN pin body 1, it can be pressed into the PCB hole 21 on the PCB board 2, that is, the PIN pin body 1 can be crimped on the PCB board 2 without welding. At the same time, by selecting the material of the Pin, designing a reasonable structure, and verifying and determining the size, the plug-in Pin can play a reliable connection and long-term stable operation role in the sensor. This connection method of the crimping process can meet the electrical connection function of the sensor without welding, and solves the problems that the welding-type assembly operation between the existing PIN pin body 1 and the PCB board 2 is cumbersome, the work efficiency is low, and the stability is limited.

[0028] Embodiment 2:

[0029] The base material of the connecting part 11 is CuNiSi. Among them, CuNiSi material is used as the base material, which is a high-performance copper alloy with high electrical conductivity, high strength, good corrosion resistance, and excellent cold and hot forming properties. It also has excellent bending performance and mechanical property capabilities such as stress relaxation resistance. The tensile strength of the material is 410 - 470 Mpa, and the minimum yield strength is 360 Mpa to meet the mechanical requirements of the Pin needle fish-eye structure for the material.

[0030] The appearance coating of the connecting part 11 is provided with a bottom layer and a surface layer. The bottom layer material is Ni, and the surface layer material is Sn. Among them, the appearance coating is defined as: the bottom layer material Ni, with a thickness of 1.5 - 3 μ, and the surface layer material Sn, with a thickness of 1.5 - 2.5 μ, so as to meet the requirements of small contact resistance and stable electrical performance in the electrical connection between the Pin needle fish-eye structure and the PCBA copper hole.

[0031] The optical hole specification of the PCB hole 21 in the PCB board 2 is Ф1.1 ± 0.05, and the surface layer of the PCB hole 21 is plated with an Sn layer same as the surface layer raw material of the connecting part 11. Among them, the PCBA optical hole is Ф1.1 ± 0.050 copper Cu with a thickness of 20 - 50 μm + tin Sn with a thickness of 1 - 10 μm. The surface tin plating Sn of it is the same as the surface electroplated metal of the Pin needle, which can ensure the chemical stability of the contact part between the two and realize the reliability of the electrical connection performance.

[0032] The thickness of the PIN needle body 1 is Ф1.2 ± 0.03 mm, and the aperture specification of the PCB hole 21 is Ф1.03 + 0.04 / - 0.06 mm adapted to its specification. Among them, the settings of the Pin needle thickness and the PCBA aperture specification can meet the interference fit between the Pin needle and the PCBA hole. A reasonable value needs to be given for the definition of the size range of the mating part. If the size range is designed unreasonably, the interference amount will be too large or too small. When it is too large, the plug-in assembly is difficult, resulting in the Pin needle being difficult to insert into the PCBA hole and being easily deformed, then the mechanical properties of the Pin needle are reduced and the electrical performance connection stability is affected; when the interference amount is too small, the mechanical properties of the Pin needle are not fully utilized and the electrical performance connection stability is also reduced. Therefore, through comprehensive analysis, evaluation, and verification, it is concluded that when the Pin needle thickness is Ф1.2 ± 0.03 mm and the PCBA aperture is Ф1.03 + 0.04 / - 0.06 mm, it is beneficial to assembly and can ensure the stable reliability of the electrical connection.

[0033] This Pin needle structure for the electrical connection stability of the torque angle sensor, through the setting of its materials, reduces one welding process and related tooling at the same time, shortens the production beat, and can thus reduce the manufacturing cost, enabling the product price to have more competitive advantage space in the market competition, improving the market share, increasing the revenue, and ensuring the practicability.

[0034] Working principle and usage process of the utility model: When the device needs to work, the connecting part 11 on the PIN needle body 1 is crimped into the PCB hole 21 on the PCB board 2. Without the need for welding workpiece assistance, the operation is simple and the assembly efficiency is high.

[0035] The foregoing has shown and described the basic principles, main features and advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic features of the utility model, the utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the utility model. Any reference signs in the claims should not be construed as limiting the claimed invention.

[0036] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A Pin structure for the electrical connection stability of a torque angle sensor, characterized in that: It includes a PCB board (2) and a PIN needle body (1) assembled thereon. Eight groups of PCB holes (21) are provided on the PCB board (2). The PIN needle body (1) is composed of a connecting part (11), an anti-rotation part (12) and a positioning part (13), and the PIN needle body (1) is clamped in the PCB hole (21) through the connecting part (11). The connecting part (11) is of a fish-eye structure. The upper end of the connecting part (11) has a small size, the middle part has a large size and a circular arc transition, and a rectangular through hole is also provided in the connecting part (11).

2. The Pin structure for the electrical connection stability of a torque angle sensor according to claim 1, characterized in that: The base material of the connecting part (11) is CuNiSi.

3. A Pin structure for the electrical connection stability of a torque angle sensor according to claim 2, characterized in that: The appearance coating of the connecting part (11) is provided with a bottom layer and a surface layer. The bottom layer material is Ni, and the surface layer material is Sn.

4. A Pin structure for the electrical connection stability of a torque angle sensor according to claim 3, characterized in that: The optical hole specification of the PCB hole (21) in the PCB board (2) is Ф1.1±0.05, and the surface layer of the PCB hole (21) is plated with a Sn layer having the same raw material as the surface layer of the connecting part (11).

5. A Pin structure for the electrical connection stability of a torque angle sensor according to claim 1, characterized in that: The thickness of the PIN needle body (1) is Ф1.2±0.03mm, and the aperture specification of the PCB hole (21) is Ф1.03+0.04 / -0.06mm adapted to its specification.

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