PIN, power module and electronic equipment

Abstract

The utility model discloses a PIN needle, power module and electronic equipment relates to power module technical field, PIN needle is used for connecting first electrical installation piece, first electrical installation piece includes the mounting hole, PIN needle includes the needle body, at least one end of the needle body is equipped with the plugging portion, the side wall of plugging portion is equipped with the conductive contact structure and the first elastic piece, and the first elastic piece is equipped with the conductive contact structure. The conductive contact structures and the first elastic pieces are distributed at intervals along the length direction of the needle body; according to the PIN, when the inserting part is inserted into the mounting hole, the first elastic piece penetrates through the mounting hole, then pops up and is in limiting fit with the second surface, and the conductive contact structure makes contact with the inner wall of the mounting hole so as to be electrically connected with the first electrical mounting piece. According to the PIN, the first elastic piece penetrates through the mounting hole and then pops up to limit the first electrical mounting piece, and the conductive contact structure is electrically connected with the first electrical mounting piece, so that the PIN can be prevented from falling off, has better resistance to vibration, is convenient to mount and can be detached and replaced.

Description

Technical Field

[0001] The utility model relates to the field of power modules, and particularly relates to a PIN pin, a power module and an electronic device. Background Art

[0002] PIN pins are usually used to connect electrical mounting parts in a power module, playing a role in transmitting driving signals, and playing an extremely important role in the application of power modules.

[0003] The existing connection methods between PIN pins and electrical mounting parts can be mainly divided into welding and crimping. Welding is to weld and fixedly connect the PIN pins and electrical mounting parts through solder, while crimping is to deform the connection base of the PIN pin and the electrical mounting part together under the action of pressure to form a tight connection structure.

[0004] However, both of the above methods have disadvantages: Since welding belongs to a rigid connection, its resistance to external factors such as thermal shock or vibration is poor, and the solder needs to be above 200°C to complete welding, which is very likely to cause damage to some components and lead to a deterioration in the performance of the final product; while crimping will inevitably cause deformation at the connection point through external force extrusion. This deformation is uncontrollable and greatly affected by raw materials, which will have a great impact on the effect of transmitting driving signals, and may also cause damage or microcracks in the electrical mounting part, having a greater impact on the performance of the final product. Summary of the Utility Model

[0005] Aiming at the above problems, the purpose of the utility model is to provide a PIN pin, a power module and an electronic device, which can solve the problem that the existing PIN pins need to be installed and connected by welding and crimping methods, which are likely to damage the product and affect the product performance.

[0006] In a first aspect, the utility model provides a PIN pin for connecting a first electrical mounting part. The first electrical mounting part includes opposite first and second surfaces and a mounting hole penetrating the first and second surfaces. The PIN pin includes a pin body, and at least one end of the pin body is provided with a plug-in part. A conductive contact structure and a first elastic member are arranged on the side wall of the plug-in part, and the conductive contact structure and the first elastic member are axially spaced along the plug-in part. The PIN pin is configured such that when the plug-in part is inserted into the mounting hole from one side of the first surface towards the second surface, the first elastic member pops out after passing through the mounting hole and is in limit cooperation with the second surface, and the conductive contact structure contacts the inner wall of the mounting hole to form an electrical connection with the first electrical mounting part.

[0007] In some embodiments, there are multiple first elastic members, and the multiple first elastic members are circumferentially spaced along the plug-in part.

[0008] In some embodiments, the first elastic member is an elastic stop post, the fixed end of the elastic stop post is fixed on the insertion portion, the free end of the elastic stop post extends axially outward relative to the needle body and obliquely toward the end of the needle body opposite to the insertion portion, and the free end abuts against the second surface after passing through the mounting hole to form a limit.

[0009] In some embodiments, the first elastic member is an elastic mounting piece, a convex block is provided at the end of the elastic mounting piece, the fixed end of the elastic mounting piece is fixed on the insertion portion, the free end of the elastic mounting piece extends along the axial direction of the needle body and away from the insertion portion, and the convex block abuts against the second surface after passing through the mounting hole to form a limit.

[0010] In some embodiments, the conductive contact structure includes at least two convex structures, at least two of the convex structures are evenly spaced along the circumferential direction of the insertion portion, and a guiding structure is provided on the side of the convex structure facing the first elastic member.

[0011] In some embodiments, the conductive contact structure is a second elastic member, and the second elastic member is configured to contract under the extrusion of the inner wall of the mounting hole and abut against the inner wall of the mounting hole to form an electrical connection with the first electrical mounting member.

[0012] In some embodiments, a fixing portion is provided at the end of the needle body along its own axial direction opposite to the insertion portion, and the fixing portion is configured to be fixedly connected to the second electrical mounting member.

[0013] In some embodiments, the fixing portion includes two fixing rings arranged oppositely and spaced apart along the axial direction of the needle body, and the distance between the two fixing rings is adapted to the thickness of the second electrical mounting member.

[0014] In a second aspect, the present invention further provides a power module, including: a first electrical mounting member, a second electrical mounting member, and the PIN needle described in the first aspect, and the first electrical mounting member and the second electrical mounting member are electrically connected through the PIN needle.

[0015] In a third aspect, the present invention further provides an electronic device, including: the PIN needle described in the first aspect and / or the power module described in the second aspect.

[0016] Due to the adoption of the above technical solutions, the present invention has at least the following beneficial effects:

[0017] The PIN pin provided by the present utility model, by setting a first elastic member and a conductive contact structure, utilizes the first elastic member to pop out and form a limit after passing through the mounting hole, which can ensure the connection effect, and enables the PIN pin to achieve electrical connection with the electrical mounting member by using the conductive contact structure, thereby ensuring the signal transmission effect of the PIN pin, not causing serious deformation or having an adverse impact on other components, being able to avoid the PIN pin falling off after insertion, having a good resistance to vibration, being convenient to install and can be disassembled and replaced, improving the flexible use effect. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the PIN pin provided by an embodiment of the present utility model;

[0019] Figure 2 is a schematic diagram of the first state of the PIN pin provided by an embodiment of the present utility model inserted into the mounting hole of the first electrical mounting member;

[0020] Figure 3 is a schematic diagram of the second state of the PIN pin provided by an embodiment of the present utility model inserted into the mounting hole of the first electrical mounting member;

[0021] Figure 4 is a schematic diagram of the third state of the PIN pin provided by an embodiment of the present utility model inserted into the mounting hole of the first electrical mounting member;

[0022] Figure 5 is a schematic diagram of the fourth state of the PIN pin provided by an embodiment of the present utility model inserted into the mounting hole of the first electrical mounting member;

[0023] Figure 6 is a schematic diagram of the fifth state of the PIN pin provided by an embodiment of the present utility model inserted into the mounting hole of the first electrical mounting member;

[0024] Figure 7 is a schematic structural diagram of the PIN pin provided with another first elastic member in other embodiments of the present utility model;

[0025] Figure 8 is a schematic structural diagram of the PIN pin provided with another conductive contact structure in other embodiments of the present utility model;

[0026] Figure 9 is a schematic structural diagram of the PIN pin provided with yet another conductive contact structure in other embodiments of the present utility model;

[0027] Figure 10 is another schematic structural diagram of the PIN pin provided by an embodiment of the present utility model;

[0028] Figure 11 is a schematic diagram of the installation cooperation of the PIN pin provided in an embodiment of the present utility model.

[0029] Reference numerals:

[0030] 1 - Plug-in part; 11 - First elastic member; 111 - Elastic stop post; 112 - Elastic mounting piece; 113 - Protrusion; 12 - Conductive contact structure; 2 - Fixing part; 21 - Fixing ring; 100 - Needle body; 200 - First electrical mounting member; 201 - Mounting hole; 300 - Second electrical mounting member. Detailed implementation manners

[0031] The technical solutions of the patent of the present utility model will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not 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.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, terms such as "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] The PIN needle of the first aspect embodiment of the present utility model will be described below.

[0035] See Figures 1-6 , Figure 1 which is a schematic structural diagram of the PIN needle provided by the embodiment of the present utility model, Figures 2-6Schematic diagrams of different states during the process of inserting the PIN pin into the mounting hole of the first electrical mounting member 200 provided in this embodiment. The first electrical mounting member 200 in this embodiment can be a circuit board, and the circuit board can be a direct bonding copper (DBC) substrate, a printed circuit board (PCB), an active metal brazing ceramic substrate (AMB), etc. Of course, the first electrical mounting member 200 can also be other structural members suitable for arranging electronic devices.

[0036] The first electrical mounting member 200 includes opposite first and second surfaces and a mounting hole penetrating the first and second surfaces. For example, taking the first electrical mounting member 200 placed horizontally as an example, the first surface can be the lower surface of the first electrical mounting member 200, the second surface can be the upper surface of the first electrical mounting member 200, and the mounting hole can penetrate along the thickness direction of the first electrical mounting member 200.

[0037] The PIN pin in this embodiment can include a pin body 100. The pin body 100 is the main structure of the PIN pin and can be used to connect two different electrical mounting members (including the above-mentioned first electrical mounting member 200 and the second electrical mounting member 300 below), such as two different circuit boards. The pin body 100 can be cylindrical, flat, or other shapes.

[0038] At least one end of the pin body 100 is provided with a plugging portion 1. For example, the pin body 100 can include a first end and a second end opposite to each other along its length direction. The plugging portion 1 can be provided only at the first end, only at the second end, or both the first end and the second end are provided with the plugging portion 1, so as to facilitate the connection of the pin body 100 to the first electrical mounting member 200 through the plugging portion 1.

[0039] Wherein, the side wall of the plugging portion 1 can be provided with a conductive contact structure 12 and a first elastic member 11. The conductive contact structure 12 and the first elastic member 11 are arranged at intervals along the length direction of the pin body 100. The first elastic member 11 can be one or multiple. Multiple means two or more. Optionally, the first elastic member 11 is at least two, and at least two first elastic members 11 are evenly spaced on the circumference of the plugging portion 1.

[0040] The insertion part 1 can be inserted into the installation hole 201 of the first electrical installation part 200 from one side of the first surface of the first electrical installation part 200 towards the second surface side. After the first elastic part 11 passes through the installation hole 201 following the insertion part 1, it pops out and abuts against the end face of the installation hole 201 (i.e., the second surface of the first electrical installation part 200) to form a limit. Among them, when the insertion part 1 passes through the installation hole 201, since the first elastic part 11 has elasticity, it can deform to facilitate passing through the installation hole 201; the conductive contact structure 12 is used to contact the inner wall of the installation hole 201 when the insertion part 1 is inserted into the installation hole 201 of the first electrical installation part 200, so as to connect with the circuit layer inside the first electrical installation part 200, and further realize electrical connection with the first electrical installation part 200.

[0041] It can be understood that PIN pins are generally used to complete the electrical signal transmission between two electronic devices or two electrical installation parts (such as the above-mentioned first electrical installation part 200 and the second electrical installation part 300 below). The overall material of the PIN pins in this embodiment can be conventional materials, such as brass, silver-plated metal material, stainless steel, alloy, etc.

[0042] In this embodiment, the first electrical installation part 200 mainly refers to an electronic device or an electrical installation part that needs to be electrically connected to another electrical installation part through a PIN pin. Therefore, when the conductive contact structure 12 on the pin body 100 of the PIN pin forms an electrical connection with the first electrical installation part 200, it can be understood that generally there can be another electrical installation part, such as the second electrical installation part 300. One end of the PIN pin far from the first electrical installation part 200 can be electrically connected to the second electrical installation part 300, so as to realize the electrical connection between the two electrical installation parts through the PIN pin, that is, the PIN pin in this embodiment can be used to connect two electrical installation parts that need to exchange and transmit electrical signals to realize signal transmission. For example, in a power module, usually ceramic substrates such as AMB substrates and DBC substrates are used as the installation carriers of chips (i.e., chip substrates), and a PCB board is additionally set as the carrier of the control circuit. The chip substrate and the PCB board need to be electrically connected to transmit signals. In this embodiment, for the situation in this example, the PCB board can be used as the first electrical installation part 200, the insertion part 1 of the PIN pin is inserted into a preset installation hole on the PCB board for electrical connection, and the other end of the PIN pin is set on the chip substrate.

[0043] In addition, in addition to the examples in this embodiment, the electrical installation part can also be other electronic devices or electrical installation parts that need to conduct signal communication. The carrier form of the electrical installation part is not strictly limited here. Those skilled in the art can select the actual application scenarios of the PIN pins according to actual needs, and other possible situations are not further listed here.

[0044] It can be understood that the PIN pin is generally in a long strip shape, which can be a straight line type, or conventional shapes such as a general broken line type, a curved line type, a bent shape, etc. In this embodiment, the straight line type is taken as an example for illustration. Those skilled in the art can simply design the main shape of the pin body 100 according to actual needs, and will not be further described herein. Additionally, as Figure 1 shown in

[0045] It can be understood that in addition to realizing electrical connection, the close contact between the conductive contact structure 12 and the mounting hole 201 can also fix the PIN pin on the mounting hole 201. Thus, the connection and fixation between the PIN pin and the electrical mounting member are achieved through the limitation of the first elastic member 11 and the close cooperation of the conductive contact structure 12, without the need for fixation by welding or crimping, avoiding various problems existing in the welding and crimping methods. For example, it avoids problems such as mismatch and cracking caused by uneven external force or uneven deformation in the crimping method, and has strong resistance to external factors such as thermal shock or vibration.

[0046] In a feasible way, as Figures 2-6 shown in

[0047] Specifically, as Figures 2-6 shown, in this embodiment, the first elastic member 11 includes two elastic retaining posts 111 as an example for illustration. In other embodiments, the number of elastic retaining posts 111 can be set according to actual needs, such as three, four, five, etc. When multiple elastic retaining posts 111 are provided, they can preferably be evenly spaced in the circumferential direction of the insertion portion 1 to facilitate uniform dispersion of the force during abutment.

[0048] In this embodiment, the two elastic retaining posts 111 are symmetrically arranged in the circumferential direction of the insertion portion 1. As Figure 2 shown, when the PIN pin is inserted into the preset mounting hole 201 of the first electrical mounting member 200, the end of the insertion portion 1 first inserts into the mounting hole 201. As the insertion depth increases, the elastic retaining post 111 contacts the end face of the mounting hole 201; as Figure 3 shown, during the continuous insertion process, the elastic retaining post 111 is restricted by the mounting hole 201, causing the elastic retaining post 111 to elastically contract and enter the mounting hole 201; as Figure 4As shown, during the continuous insertion process, the conductive contact structure 12 contacts the end face of the mounting hole 201; as Figure 5 shown, after continuous insertion, the conductive contact structure 12 is inserted into the mounting hole 201, and at the same time, the elastic retaining post 111 is about to disengage from the mounting hole 201; finally, as Figure 6 shown, after the elastic retaining post 111 leaves the mounting hole 201, the restraint of the elastic retaining post 111 is released, so that it bounces back to its original state, and the free end of the elastic retaining post 111 abuts against the end face of the mounting hole 201 to form a limiting connection.

[0049] In a feasible manner, the end face of the free end of the elastic retaining post 111 can be a plane. In this embodiment, it is preferably that the end face of the free end of the elastic retaining post 111 is planar in the natural state, so that when the free end of the elastic retaining post 111 abuts against the first electrical mounting member 200, it is a surface contact, with a large force-bearing area, avoiding stress concentration on the first electrical mounting member 200 during abutment and causing wear.

[0050] In a feasible manner, as Figure 7 shown, Figure 7 is a schematic structural diagram of a PIN pin provided with another first elastic member 11 in other embodiments. In this embodiment, the first elastic member 11 can be an elastic mounting piece 112. A convex block 113 is provided at the end of the elastic mounting piece 112. The fixed end of the elastic mounting piece 112 is fixed to the insertion portion 1 at one end of the needle body 100. The free end of the elastic mounting piece 112 extends along the axial direction of the needle body 100 and away from the insertion portion 1. The convex block 113 can pop out after passing through the mounting hole 201 and abut against the end face of the mounting hole 201 to form a limit.

[0051] In addition, as Figure 7 shown, an empty groove 114 can be provided at the end position of the insertion portion 1, so that when the PIN pin is inserted into the mounting hole, the hole wall of the mounting hole 201 squeezes the convex block 113, contracting the convex block 113 into the position of the empty groove 114, so as to ensure that the PIN pin can be smoothly inserted into the mounting hole. After the convex block 113 passes through the mounting hole, it rebounds to its original state by the elasticity of the elastic mounting piece 112 and abuts against the end face of the mounting hole. Specifically, reference can be made to Figures 2-6 for understanding. The elastic abutment and limiting principles of the two forms are similar and will not be further shown here.

[0052] It can be understood that the free end of the foregoing Figures 1-6 elastic retaining post 111 faces the other end of the needle body 100 opposite to the insertion portion 1, while Figure 7The free end of the elastic mounting piece 112 in it faces the end of the needle body 100 opposite to the insertion part 1 and the outward direction. Their structures are different, but both can realize the limiting connection in cooperation with the mounting hole 201. Those skilled in the art can select and design according to actual needs, and those skilled in the art can make simple deformation designs based on the above design principles. More specific situations are not listed here.

[0053] It can be understood that the elasticity of the above elastic stop post 111 or elastic mounting piece 112 can be adjusted according to actual conditions, as long as it can shrink into the mounting hole 201 when the insertion part 1 is inserted into the mounting hole 201 and reset and spring open after passing through the mounting hole 201. At the same time, its strength and stiffness can be adjusted according to actual needs. On the premise of ensuring shrinkage and springing open, a better strength design is preferably adopted so that the elastic stop post 111 and elastic mounting piece 112 can effectively abut against the end face of the mounting hole 201 (i.e., the second surface of the first electrical mounting member 200) to limit and fix the PIN needle and prevent the elastic stop post 111 and elastic mounting piece 112 from automatically retracting into the mounting hole 201 and causing the PIN needle to fall off. In addition, for the elastic stop post 111 or elastic mounting piece 112, its cross-sectional shape can be circular, polygonal, elliptical or irregular. Those skilled in the art can select and design according to actual needs, and no further description will be given here.

[0054] In a feasible way, as Figures 1-7 shown in, the conductive contact structure 12 includes at least two convex structures, and the at least two convex structures are evenly spaced in the circumferential direction of the insertion part 1, and a guiding structure is arranged on the side of the convex structure facing the first elastic member 11.

[0055] It can be understood that the convex structure is mainly designed to be convex relative to the side wall of the needle body 100. In this embodiment, two convex structures symmetrically arranged in the circumferential direction of the insertion part 1 are taken as an example for description. In other embodiments, other numbers of convex structures can also be set according to actual needs, such as three, four, five, etc., and preferably evenly spaced in the circumferential direction of the insertion part 1 so that the force is evenly distributed and not concentrated. Specifically, as Figure 5 shown, in this embodiment, the size of the needle body 100 is smaller than the size of the mounting hole 201. By arranging convex structures on the insertion part 1, when the insertion part 1 is inserted into the mounting hole 201, the convex structures are inserted into the mounting hole 201 under the guiding action of the guiding structure and are in close fit with the mounting hole 201, so that the PIN needle forms a stable electrical connection with the first electrical mounting member 200 through the convex structures. In addition, the guiding structure can be a conventional structure such as a chamfer or an inclined surface, and no detailed description will be given here.

[0056] In a feasible way, asFigure 8 As shown Figure 8 FIG. Figure 8 is a schematic diagram of a PIN pin structure with another conductive contact structure in other embodiments. The conductive contact structure 12 is a second elastic member. The second elastic member can contract into the mounting hole 201 and then abut against the inner wall of the mounting hole 201 to form an electrical connection with the first electrical mounting member 200.

[0057] It can be understood that the shape of the second elastic member can be the same as that of the first elastic member 11, both of which are composed of elastic retaining posts 111. The difference is that the orientations of the free ends of the second elastic member and the first elastic member 11 are different, and simple adjustments can also be made in terms of shape. For the state of the second elastic member in the mounting hole after being inserted into the mounting hole, reference can be made to Figure 3 the state of the first elastic member 1 in FIG. Figure 3 for understanding, and no further description will be given here. By using the second elastic member as the conductive contact structure 12, while ensuring close contact between the conductive contact structure 12 and the inside of the mounting hole 201, it can also leave a certain deformation margin when the conductive contact structure 12 remains in contact with the mounting hole 201 under conditions such as vibration, avoiding poor contact due to gap between the PIN pin and the mounting hole 201, or the situation of PIN pin breakage, and having a good resistance to vibration.

[0058] In a realizable manner, as Figure 9 shown Figure 9 FIG. Figure 9 is a schematic diagram of a PIN pin structure with yet another conductive contact structure in other embodiments. The cross-sectional shape of the conductive contact structure 12 is adapted to the shape of the mounting hole 201 of the first electrical mounting member 200, so that the conductive contact structure 12 and the mounting hole 201 are closely fitted.

[0059] It can be understood that the main function of the conductive contact structure 12 is to be able to form close contact with the mounting hole 201 when inserted into the mounting hole 201 of the first target mounting member to achieve electrical connection, and to play a role in assisting in connecting and fixing the PIN pin to the first electrical mounting member 200. Therefore, in this embodiment, the cross-sectional shape of the conductive contact structure 12 can be set to be adapted to the cross-sectional shape of the mounting hole 201 of the first electrical mounting member 200. For example, the cross-sectional shape of the conductive contact structure 12 is the same as the cross-sectional shape of the mounting hole 201 of the first electrical mounting member 200, so that the conductive contact structure 12 and the mounting hole 201 are closely fitted through an interference fit method to achieve a stable and reliable electrical connection.

[0060] Specifically, the mounting hole 201 can be a circular hole. Correspondingly, as Figure 9As shown, the conductive contact structure 12 can be cylindrical with a circular cross-section, facilitating tight contact connection after being inserted into the mounting hole 201. Besides being cylindrical, the cross-sectional shape of the conductive contact structure can be simply adjusted according to the specific shape of the mounting hole, such as square or oval, etc., which will not be further described herein.

[0061] It can be understood that whether the conductive contact structure 12 is the aforementioned convex structure or the shape structure adapted to the mounting hole 201 of the first electrical mounting member 200, the contact between it and the mounting hole 201 mainly ensures tight contact to achieve electrical connection. There is no need to make the pin body 100 of the PIN pin and the first electrical mounting member 200 deform together to form a connection in the way of crimping in the related art, which can avoid excessive deformation and large forces on the pin body 100 and the first electrical mounting member 200, and is not prone to breakage and damage. At the same time, in addition to achieving electrical connection, the PIN pin can be fixedly arranged on the mounting hole 201 through tight contact, so as to realize the connection and fixation between the PIN pin and the first electrical mounting member 200 by combining the limit of the first elastic member 11.

[0062] In a feasible way, as Figures 1-9 , a fixing part 2 can be provided at one end of the pin body 100 along its length direction opposite to the insertion part 1, and the fixing part 2 is used for fixing on the second electrical mounting member 300.

[0063] It can be understood that the second electrical mounting member 300 can be understood by referring to the description of the first electrical mounting member 200 and the electrical mounting member above. Specifically, in combination with the aforementioned example, if the first electrical mounting member 200 is a PCB board in the power module, then the second electrical mounting member 300 can be a chip substrate in the power module, and vice versa. For the connection method between the fixing part 2 and the second electrical mounting member 300, it can be welded and fixedly connected, integrally fixedly arranged, interference-fitted with a preset mounting hole of the second electrical mounting member 300 for fixed setting, and other conventional fixing methods. If the welding method is adopted, as Figures 1-9 shown, corresponding pad structures can be provided on the fixing part 2, and more specific details will not be further described herein.

[0064] It can be understood that generally, one end of the PIN pin can be fixedly arranged on one of the electrical mounting parts (such as the second electrical mounting part 300) first, and then the other end can be inserted into another electrical mounting part (such as the first electrical mounting part 200). When inserting it into another electrical mounting part, if the crimping method is used, the other electrical mounting part and the pin body 100 of the PIN pin will deform together to form a tight connection structure, which is likely to cause damage and cracks to the other electrical mounting part; if the welding method is used, due to the small operating space, it is easy to damage other components. Therefore, for the PIN pin in this embodiment, one end is provided with a plug-in part 1 and the other end is a fixing part 2. It can be fixedly connected to an electrical mounting part through the fixing part 2 first, and then the plug-in part 1 of the PIN pin can be inserted into the mounting hole of another electrical mounting part to achieve a mating connection, which can avoid the problems existing when connecting the PIN pin and another electrical mounting part by using the crimping or welding methods in the related art.

[0065] It can be further understood that generally, after the first electrical mounting part 200 and the second electrical mounting part 300 are installed, they are in a relatively fixed positional relationship, that is, the first electrical mounting part 200 and the second electrical mounting part 300 are fixedly arranged with each other. For example, the PCB board (equivalent to the first electrical mounting part 200) and the chip substrate (equivalent to the second electrical mounting part 300) in the power module are not only electrically connected by the PIN pin, but also fixedly arranged on other components of the power module through other physical connection structures, and do not rely solely on the PIN pin to complete the fixed connection relationship between the two. The main function of the PIN pin is to achieve the electrical connection between the two. Therefore, the PIN pin provided in this embodiment can utilize the relatively fixed relationship between the first electrical mounting part 200 and the second electrical mounting part 300 to form a stable connection. Specifically, the fixing part 2 is fixed on the second electrical mounting part 300, and the first elastic member 11 on the plug-in part 1 abuts against the end surface of the mounting hole 201 of the first electrical mounting part 200, such as the second surface. The two ends of the PIN pin respectively cooperate with the first electrical mounting part 200 and the second electrical mounting part 300 to form a fixed connection relationship.

[0066] Optionally, as Figure 1 shown in, the fixing part 2 includes two fixing rings 21 arranged oppositely and spaced along the axial direction of the pin body 100. The distance between the two fixing rings 21 is adapted to the thickness of the second electrical mounting part 300. During assembly, the second electrical mounting part 300 can be clamped between the two fixing rings 21 and can be fixed by a close-fitting method. When necessary, welding fixation can be adopted to form a stable cooperation between the PIN pin and the second electrical mounting part 300.

[0067] When the PIN pin provided in this embodiment is in use, first fix the fixing part 2 of the PIN pin on the second electrical installation part 300, and then insert the insertion part 1 of the PIN pin into the installation hole 201 of the first electrical installation part 200. During the insertion process, first, the first elastic part 11 of the insertion part 1 is squeezed and contracted into the installation hole 201 by the installation hole 201. During the continuous insertion process, the conductive contact structure 12 of the insertion part 1 is inserted into the installation hole 201 and contacts the inside of the installation hole 201 to form an electrical connection. When continuing to insert, the first elastic part 11 passes through the installation hole 201 of the first electrical installation part 200, returns to its original state under the elastic action and abuts against the end face of the installation hole 201, so that a limit fit is formed between the PIN pin and the first electrical installation part 200. It can be fixed with other components according to needs. Then, when it is necessary to disassemble the PIN pin, the first elastic part 11 can be squeezed by hand or conventional pliers, clips, etc., so that the first elastic part 11 contracts and does not abut against the end face of the installation hole 201 of the first electrical installation part 200. Then, by pulling the PIN pin, the first elastic part 11 can enter the installation hole 201, and the PIN pin can be pulled out of the installation hole 201 to complete the disassembly.

[0068] Due to the adoption of the above technical solution, the embodiment of the present utility model has at least the following beneficial effects:

[0069] The PIN pin provided in the embodiment of the present utility model, by setting the first elastic part 11 and the conductive contact structure 12, using the first elastic part 11 to pop out after passing through the installation hole 201 to form a limit, can ensure the connection effect, and using the conductive contact structure 12 enables the PIN pin to achieve an electrical connection with the electrical installation part, thereby ensuring the signal transmission effect of the PIN pin, not causing serious deformation or having an adverse impact on other components, being able to avoid the PIN pin falling off after insertion, having a good resistance to vibration, being convenient to install and can be disassembled and replaced, improving the flexible use effect.

[0070] Embodiment 2

[0071] As Figures 10-11 shown, Figure 10 is another structural schematic diagram of the PIN pin provided by the present utility model. Figure 11 is the installation and cooperation schematic diagram of the PIN pin provided in this embodiment. Different from the PIN pin provided in Embodiment 1, for the PIN pin provided in Embodiment 1, one end is provided with a fixing part 2 and the other end is provided with an insertion part 1, while for the needle body 100 in this embodiment, both ends are provided with insertion parts 1, and each insertion part 1 is provided with a first elastic part 11 and a conductive contact structure 12. In addition, for the same technical features as in Embodiment 1, those skilled in the art can understand and combine them with those in Embodiment 1, and will not be further described in detail here.

[0072] It can be understood that the PIN pins can be used to connect two electrical installation components that need to be electrically connected. As described in the foregoing embodiments, generally, after the first electrical installation component 200 and the second electrical installation component 300 are installed, they are in a relatively fixed positional relationship, that is, the first electrical installation component 200 and the second electrical installation component 300 are fixedly arranged relative to each other. For example, in a power module, a PCB board (equivalent to the first electrical installation component 200) and a chip substrate (equivalent to the second electrical installation component 300) are fixedly arranged on other components of the power module through other physical connection structures in addition to being electrically connected by PIN pins, rather than simply relying on PIN pins to complete the fixed connection relationship between the two. The main function of the PIN pins is to achieve electrical connection between the two. Therefore, in this embodiment, plug-in portions 1 are provided at both ends of the PIN pins. When in use, the two ends can be respectively connected to the first electrical installation component 200 and the second electrical installation component 300 through the plug-in portions 1 at both ends. In combination with the first elastic members 11 of the plug-in portions 1 at both ends of the PIN pins respectively abutting against the outer end faces of the mounting holes of the first electrical installation component 200 and the second electrical installation component 300, a fixed connection relationship is formed through joint cooperation. In addition, the conductive contact structure 12 being in close contact with the mounting hole 201 can also fix the PIN pin on the mounting hole 201.

[0073] When the PIN pins provided in this embodiment are in use, first insert the plug-in portion 1 at one end of the PIN pin into the mounting hole 201 of the first electrical installation component 200, and then insert the plug-in portion 1 at the other end into the mounting hole of the second electrical installation component 300; it can also be to directly insert and pass through the mounting hole of the second electrical installation component 300 at one end of the plug-in portion 1, insert it into the mounting hole 201 of the first electrical installation component 200 and form a limit by elastically restoring to its original state when leaving the mounting hole 201 of the first electrical installation component 200 and abutting against the end face of the mounting hole 201, and then directly abut the first elastic member 11 of the plug-in portion 1 at the other end against the end of the mounting hole 201 of the second electrical installation component 300. Then, fix the first electrical installation component 200 and the second electrical installation component 300 as needed to form an overall fixed connection. Compared with the foregoing embodiments, the PIN pins in this embodiment eliminate the need to weld and fix the PIN pins to one of the electrical installation components, and the whole can be conveniently disassembled and replaced, which can better protect the electrical installation components.

[0074] Embodiment 3

[0075] In this embodiment, the present utility model further provides a power module, including a first electrical installation component and a second electrical installation component 300, and the first electrical installation component and the second electrical installation component 300 are electrically connected through PIN pins.

[0076] It can be understood that the first electrical installation part and the second electrical installation part 300 can be the chip substrate and the PCB board in the power module, which will not be further described repeatedly here. Those skilled in the art can understand and implement them in combination with the description of the foregoing embodiments.

[0077] Embodiment 4

[0078] In this embodiment, the present utility model further provides an electronic device, which is provided with the PIN pins provided in the embodiments of the present utility model and / or the power module provided in the above embodiments.

[0079] It can be understood that the electronic device can be a terminal device, or an electronic module / electronic module / component unit, etc. It can be separately provided with the PIN pins in this embodiment, or can form a connection combination with other components or components through the PIN pins, or can be provided with a power module including the PIN pins in this embodiment. More situations will not be further described here.

[0080] Although the present utility model has been described in detail with general descriptions and specific embodiments above, on the basis of the present utility model, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present utility model all fall within the scope of protection required by the present utility model.

Claims

1. A PIN needle, used to connect a first electrical installation component, characterized in that: The first electrical installation component includes a first surface and a second surface opposite to each other, and a mounting hole penetrating the first surface and the second surface. The PIN needle comprises a needle body, at least one end of the needle body is provided with an inserting portion, a side wall of the inserting portion is provided with a conductive contact structure and a first elastic member, and the conductive contact structure and the first elastic member are spaced apart and distributed along the length direction of the needle body; The PIN needle is constructed so that when the plug-in portion is inserted into the mounting hole from the first surface side toward the second surface side, the first elastic member pops out after passing through the mounting hole and engages with the second surface in a limited position, and the conductive contact structure contacts the inner wall of the mounting hole to form an electrical connection with the first electrical installation component.

2. The PIN needle according to claim 1, characterized in that: There are a plurality of the first elastic members, and the plurality of the first elastic members are arranged at intervals along the circumference of the plug-in portion.

3. The PIN needle according to claim 1, characterized in that: The first elastic member is an elastic stop column, a fixed end of which is fixed on the plug-in portion, and a free end of which extends obliquely outward relative to the axial direction of the needle body and toward an end of the needle body opposite to the plug-in portion, and after passing through the mounting hole, the free end abuts against the second surface to form a limit.

4. The PIN needle according to claim 1, characterized in that: The first elastic member is an elastic mounting plate, a protrusion is provided at the end of the elastic mounting plate, the fixed end of the elastic mounting plate is fixed on the plug-in part, the free end of the elastic mounting plate extends along the axial direction of the needle body and away from the plug-in part, and the protrusion abuts against the second surface after passing through the mounting hole to form a limit.

5. The PIN needle according to claim 1, characterized in that: The conductive contact structure includes at least two protruding structures, and the at least two protruding structures are evenly spaced along the circumference of the plug-in portion. A guide structure is provided on one side of the protruding structure facing the first elastic member.

6. The PIN needle according to claim 1, characterized in that: The conductive contact structure is a second elastic member, and the second elastic member is configured to shrink under the pressure of the inner wall of the mounting hole and abut against the inner wall of the mounting hole to form an electrical connection with the first electrical installation component.

7. The PIN needle according to any one of claims 1 to 6, characterized in that: A fixing portion is provided at one end of the needle body along its axial direction opposite to the plug-in portion, and the fixing portion is configured to be fixedly connected to the second electrical installation component.

8. The PIN needle according to claim 7, characterized in that: The fixing portion includes two fixing rings which are arranged opposite to each other and spaced apart in the axial direction of the needle body, and the distance between the two fixing rings is adapted to the thickness of the second electrical installation component.

9. A power module, characterized in that: include: A first electrical installation component, a second electrical installation component, and a PIN needle according to any one of claims 1 to 8, wherein the first electrical installation component and the second electrical installation component are electrically connected via the PIN needle.

10. An electronic device, characterized in that: include: The PIN needle according to any one of claims 1 to 8, and / or the power module according to claim 9.

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