A crimping structure

Abstract

The utility model relates to the crimping technical field, concretely relates to a crimping structure, include: the department of inserting, is used for inserting in the department of inserting hole of PCB board, force department is as the force point of providing pressure, when force department force carries out crimping operation, the department of inserting moves along its axial motion and pin needle contact in the department of inserting hole, produces extrusion to pin needle, simultaneously, the department of inserting occurs perpendicular to its department of inserting direction's deformation, makes the department of inserting fixed on the PCB board personally, and pin needle crimping is fixed in the PCB board, in the utility model, pin needle is installed on the PCB board through the mode of crimping, and the influence of whisker caused by soldering to the stability of equipment is eliminated.

Description

Technical Field

[0001] This utility model relates to the field of crimping technology, and in particular to a crimping structure. Background Technology

[0002] In the manufacturing process of electronic devices, the connection between the pins and the PCB is a crucial step in ensuring the normal operation of the circuit. Currently, the industry commonly uses soldering to achieve this connection. However, this traditional process has revealed many problems in practical applications, seriously affecting product quality and reliability, increasing production costs, and involving multiple cost factors in the soldering process.

[0003] First, the price of solder itself is a significant component of the cost. As the electronics industry's requirements for connection quality continue to increase, the solder used typically needs to possess good solderability, conductivity, and a certain level of strength, making high-quality solder relatively expensive. Second, soldering consumes a large amount of energy. The soldering process requires heating equipment to melt the solder, necessitating a continuous power supply. For large-scale electronics manufacturers, energy costs represent a substantial expense. Third, soldering requires highly skilled operators. Experienced solderers need professional training and practice to master the appropriate soldering temperature, time, and techniques to ensure soldering quality.

[0004] Furthermore, soldering easily produces whiskers, and the elongated shape of whiskers can easily cause short circuits. When whiskers grow between critical circuit components or lines, they can disrupt the normal operation of the circuit, leading to malfunctions in electronic devices, such as charging interruptions, voltage instability, or even complete device failure. Whiskers can also interfere with signal transmission, causing signal attenuation and distortion, thus affecting the performance of electronic devices. For example, in communication equipment, signal interference can lead to decreased communication quality and data transmission errors.

[0005] Therefore, this application develops a crimping structure to solve the problems existing in the prior art. Utility Model Content

[0006] The purpose of this invention is to provide a press-fit structure to solve the problem of whiskers generated by soldering affecting equipment operation in the prior art.

[0007] The technical solution of this utility model is: a press-fit structure, comprising: Insertion section, used for insertion into the insertion hole of the PCB board; The force-applying part, as the point of application of pressure; When the force-applying part is subjected to force and performs a crimping operation, the insertion part moves along its axial direction in the insertion hole and contacts the pin, generating a squeezing force on the pin. At the same time, the insertion part deforms perpendicular to its insertion direction, fixing the insertion part itself on the PCB board and crimping and fixing the pin inside the PCB board.

[0008] Preferably, the insertion part has a squeezing part and a deformation part, the squeezing part and the deformation part are on two different planes, the squeezing part contacts the pin, so that the pin abuts against the inner wall of the insertion hole, and the deformation part does not contact the pin, but directly abuts against the insertion hole.

[0009] Preferably, the surface of the extrusion part is a plane, and the surface of the deformation part is arc-shaped. The arc of the deformation part first increases and then decreases along the insertion direction, making the middle area of ​​the deformation part wider.

[0010] Preferably, the surface of the extrusion part is provided with a through hole. When the deformation part is subjected to force and deforms in the direction close to the through hole, the through hole shrinks along the deformation direction and the insertion part elongates along the insertion direction.

[0011] Preferably, there are two insertion parts, both of which are connected to the force-applying part, and the distance between the two insertion parts is equal to the distance between the two through holes.

[0012] Preferably, the insertion force of the insertion part is less than 200N, and the extraction force of the insertion part is greater than 30N. Compared with the prior art, the advantages of this utility model are: (1) The extrusion part and the deformation part are located on different planes. The extrusion part directly contacts the pin and applies pressure to make the pin tightly abut against the inner wall of the insertion hole. The deformation part does not contact the pin. During the pressing, it is restricted by the wall of the insertion hole and undergoes deformation perpendicular to the insertion direction, which enhances the fixing effect of the insertion part on the PCB board and assists the extrusion part in firmly pressing the pin into the PCB board. The surface of the extrusion part is a flat plane, which can provide uniform and stable pressure to ensure that the pin is tightly attached to the inner wall of the insertion hole. (2) The surface of the deformable part has an arc-shaped structure. The arc increases first and then decreases along the insertion direction. The middle area is wider than the two ends. When crimping, the middle area of ​​the insertion part is squeezed after contacting the insertion hole. The pressure gradually increases until the middle area is completely inserted into the insertion hole, thus ensuring the pin is fixed. Because the crimping method is used, whiskers caused by soldering will not be generated, thus affecting the operation of the equipment and signal transmission. (3) Two insertion parts are provided and both are fixedly connected to the force application part. The distance between the two insertion parts is exactly equal to the distance between the through holes on their respective surfaces. When pressing, the two insertion parts work together to achieve precise matching with the corresponding through holes, thereby improving the pressing efficiency. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the pressing structure described in this utility model; Figure 2 This is a schematic diagram of another embodiment of the present invention; Figure 3 This is a front view of another embodiment of the present invention; Figure 4 This is a schematic diagram showing the location of the press-fit structure described in this utility model on the PCB board; Figure 5 This is a simulation diagram of the pull-out force of the insertion part described in this utility model; Figure 6 This is a simulation diagram of the insertion force of the insertion part described in this utility model.

[0014] Among them: 1. Insertion part; 11. Extrusion part; 111. Through hole; 12. Deformation part; 2. Force application part; 3. PCB board; 31. Insertion hole. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to specific embodiments: like Figures 1-3 As shown, a crimping structure includes an insertion part 1 and a force-applying part 2. The insertion part 1 is used to insert into and fix itself in the insertion hole 31 of the PCB board 3. During the crimping operation, the insertion part 1 can move along its axial direction within the insertion hole 31. The force-applying part 2 serves as the force application point, providing the necessary pressure for the crimping operation. When an external force is applied to the force-applying part 2 for crimping, the insertion part 1 begins to move along its axial direction within the insertion hole 31. As the insertion part 1 moves, it contacts the pin and exerts a squeezing force on the pin. Simultaneously, the insertion part 1 is also constrained by the wall of the insertion hole 31, resulting in deformation perpendicular to its insertion direction. This deformation allows the insertion part 1 to be tightly fixed to the PCB board 3, crimping and fixing the pin within the PCB board 3, thereby achieving a stable connection of the crimping structure.

[0016] Specifically, when the pins are installed on the PCB board 3 by crimping, the insertion force corresponding to the insertion part 1 should be less than 200N, and the extraction force should be greater than 30N. Figures 5-6As shown, the insertion and extraction forces of the plug part 1 in this embodiment meet the requirements, and also ensure that the crimping of the pin meets the IPC-9797 standard, ensuring that the crimped connection can maintain stable and reliable performance under extreme conditions such as high temperature, high humidity, and vibration, and guaranteeing the stability of equipment operation and signal transmission.

[0017] In this embodiment, as Figure 1 As shown, the insertion part 1 has a pressing part 11 and a deformation part 12. The pressing part 11 and the deformation part 12 are located on two different planes. Specifically, the pressing part 11 directly contacts the pin on the PCB board 3. During the pressing process, the pressing part 11 applies pressure to the pin, causing it to tightly abut against the inner wall of the insertion hole 31, thus ensuring a stable connection of the pin on the PCB board 3. The deformation part 12 does not contact the pin. During the pressing operation, as the insertion part 1 moves and is pressed within the insertion hole 31, the deformation part 12 is restricted and compressed by the wall of the insertion hole 31, resulting in deformation perpendicular to the insertion direction. This deformation not only enhances the fixing effect of the insertion part 1 on the PCB board 3 but also further assists the pressing part 11 in firmly pressing the pin into the PCB board 3. Through this design, the pressing part 11 and the deformation part 12 work together to achieve reliable pressing and stable fixing of the pin on the PCB board 3.

[0018] Specifically, such as Figure 2 As shown, the surface of the pressing part 11 is designed as a flat plane, which allows the pressing part 11 to provide uniform and stable pressure when in contact with the pin, ensuring that the pin fits tightly against the inner wall of the insertion hole 31. The surface of the deformation part 12 has an arc-shaped structure, and the curvature of the deformation part 12 shows a trend of first increasing and then decreasing along the insertion direction, making the middle area of ​​the deformation part 12 wider than the two ends. During the crimping process, when the insertion part 1 is inserted into the insertion hole 31, it will not be squeezed. When the middle area of ​​the insertion part 1 is in contact with the insertion hole 31, the insertion part 1 is squeezed. As the insertion part 1 moves, the pressure on the deformation part 12 gradually increases until the middle area of ​​the insertion part 1 is completely inserted into the insertion hole 31, further enhancing the fixing effect of the insertion part 1 on the PCB board 3, and conforming to the IPC-9797 standard.

[0019] like Figure 4As shown, in order to facilitate the deformation of the deformable part 12, a through hole 111 is provided on the surface of the extrusion part 11. During the crimping operation, when the deformable part 12 is subjected to external force, its deformation direction is towards the position close to the through hole 111. As the deformable part 12 gradually approaches the through hole 111 and deforms, the through hole 111 will gradually shrink along the deformation direction. At this time, the entire insertion part 1 will be stretched along the insertion direction, so that the insertion part 1 can better adapt to the shape and size changes of the insertion hole 31 during crimping, ensuring the stability and reliability of the crimping.

[0020] In one implementation, such as Figures 2-3 As shown, there are two insertion parts 1, both of which are fixedly connected to the force-applying part 2. Furthermore, the distance between the two insertion parts 1 is exactly equal to the distance between the through holes 111 on their respective surfaces, so that during the crimping operation, the two insertion parts 1 can work together to achieve precise matching with the corresponding through holes 111, ensuring the stability and accuracy of the crimping.

[0021] In practical applications, after the pin is crimped, the force-applying part 2 should be cut off, leaving only the insertion part 1 to maintain the stability of the pin.

[0022] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A crimping structure, characterized in that, include: Insertion part (1) is used to insert into the insertion hole (31) of PCB board (3); The force-applying part (2) serves as the point of application of pressure; When the force-applying part (2) is subjected to force and performs a crimping operation, the insertion part (1) moves along its axial direction in the insertion hole (31) and contacts the pin, generating a squeezing force on the pin. At the same time, the insertion part (1) undergoes a deformation perpendicular to its insertion direction, so that the insertion part (1) itself is fixed on the PCB board (3) and the pin is crimped and fixed in the PCB board (3).

2. The crimping structure according to claim 1, characterized in that: The insertion part (1) has a squeezing part (11) and a deformation part (12). The squeezing part (11) and the deformation part (12) are on two different planes. The squeezing part (11) contacts the pin, so that the pin abuts against the inner wall of the insertion hole (31). The deformation part (12) does not contact the pin, but directly abuts against the insertion hole (31).

3. The pressing structure according to claim 2, characterized in that: The surface of the extrusion part (11) is a plane, and the surface of the deformation part (12) is arc-shaped. The curvature of the deformation part (12) first increases and then decreases along the insertion direction, making the middle area of ​​the deformation part (12) wider.

4. The pressing structure according to claim 2, characterized in that: The surface of the extrusion part (11) is provided with a through hole (111). When the deformation part (12) is subjected to force and deforms in the direction close to the through hole (111), the through hole (111) shrinks along the deformation direction and the insertion part (1) elongates along the insertion direction.

5. The pressing structure according to claim 4, characterized in that: The insertion part (1) is provided in two parts, and both are connected to the force application part (2). The distance between the two insertion parts (1) is equal to the distance between the two through holes (111).

6. The crimping structure according to claim 1, characterized in that: The insertion force of the insertion part (1) is less than 200N, and the extraction force of the insertion part (1) is greater than 30N.

Images