Connection structure of power device and circuit board, and electronic equipment

Abstract

The utility model discloses a connection structure of a power device and a circuit board, and electronic equipment, and relates to the technical field of electronic equipment. The connecting structure of the power device and the circuit board comprises a guide pin, a first connecting part and a second connecting part, the first connecting part is provided with a first mounting through hole which is used for enabling the guide pin to penetrate through the circuit board and to be inserted into the power device; the second connecting part is provided with a second mounting through hole for the lead pin to pass through, the second connecting part can tightly hold and be electrically connected with the lead pin, and can stretch and retract along the extension direction of the first mounting through hole and the second mounting through hole, and by using the connecting structure, the flexible connection between the power device and the circuit board can be realized, so that the vibration stress can be released, and the reliability of the power device is improved. The power device is prevented from falling off from the circuit board, and meanwhile, the connection reliability of the pins in the power device and the wafer chip can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic equipment technical field, more specifically, relate to a kind of connecting structure of power device and circuit board.In addition, the utility model further relates to a kind of electronic equipment comprising the connecting structure of power device and circuit board of above-mentioned. BACKGROUND

[0002] At present, electric vehicles generally install motor controller on motor or vehicle rear axle, and the motor controller is usually arranged to adapt to high-frequency vibration environment, i.e. the motor controller needs to adapt to high-frequency vibration transmitted by wheels. With the development of science and technology, the internal connection scheme of traditional motor controller cannot meet the requirement of higher and higher frequency vibration. Specifically, in the motor controller, the power device usually inserts its own lead pin into the preset position of the circuit board and is welded on the circuit board using solder. Due to the influence of high-frequency vibration, the power device with the above hard connection is more likely to fall off the circuit board.

[0003] In summary, how to avoid the power device from falling off the circuit board is a problem to be solved by the skilled in the art. SUMMARY

[0004] Therefore, the utility model aims to provide a connecting structure of power device and circuit board, which can realize soft connection of the power device and the circuit board to release vibration stress and avoid the power device from falling off the circuit board.

[0005] Another object of the utility model is to provide an electronic device comprising the connecting structure of power device and circuit board.

[0006] To achieve the above object, the utility model provides the following technical scheme.

[0007] A connecting structure of power device and circuit board comprises a lead pin, a first connecting part and a second connecting part.

[0008] The first connecting part has a first mounting through hole for passing the lead pin through the circuit board and being inserted into the power device.

[0009] The second connecting part has a second mounting through hole for passing the lead pin, and the second connecting part can tightly hold and electrically connect the lead pin and can stretch and contract along the extension direction of the first mounting through hole and the second mounting through hole.

[0010] Preferably, the first connecting part further has a pin for fixing the first connecting part to the circuit board.

[0011] Preferably, the second connecting part comprises a plurality of elastic pieces, and the elastic pieces are capable of stretching along the extension direction of the first mounting through hole and the second through hole.

[0012] The first end of the elastic piece is fixedly connected to the first connecting part, and the second end is used for abutting against the lead pin.

[0013] Preferably, the plurality of elastic pieces are uniformly arranged around the center line of the mounting through hole, so as to cooperatively tightly hold the lead pin.

[0014] Preferably, the elastic piece and the extension direction of the first mounting through hole have a non-zero included angle, and the second end of the elastic piece is inclined towards the side close to the center line of the mounting through hole.

[0015] Preferably, the elastic piece comprises a first segment in a wave shape.

[0016] Preferably, the elastic piece further comprises a second segment in a straight line shape.

[0017] One end of the second segment is connected to the first end of the first segment, and the other end is swingably connected to the first connecting part.

[0018] The second end of the first segment is used for abutting against the lead pin.

[0019] Preferably, the first connecting part comprises a main body and a plurality of lead pins, and the main body is in a circular ring structure.

[0020] Preferably, the plurality of elastic pieces are connected to the ring segment of the main body between the corresponding two lead pins.

[0021] An electronic device comprising the connecting structure of the power device and the circuit board according to any one of the preceding items.

[0022] In the present application, in order to electrically connect the power device on the circuit board, the connecting structure is provided with a first connecting part connected to the circuit board, such as a flat plate structure or a frame structure, and a first mounting through hole is formed in the middle of the first connecting part. A second connecting part is fixed on the first connecting part by welding or other means capable of realizing electrical connection, and a second mounting through hole is formed in the middle of the second connecting part. The lead pin of the power device can pass through the first mounting through hole and the second mounting through hole in sequence.

[0023] The lead pin is a metal rod or other types of conductive rod, the second connecting part is a center hole structure, and can tightly hold the lead pin passing through the second mounting through hole in the middle. The first mounting part and the second mounting part are both conductive structures, so that the electrical connection with the lead pin can be realized while being tightly held. The power device can be electrically connected to the circuit board through the connecting structure.

[0024] In use, the whole structure of the first mounting part and the second mounting part connected together is placed on the front surface of the circuit board at a predetermined position, then the first connecting part is electrically connected to the circuit board, then the lead pin is sequentially inserted through the first mounting through hole and the second mounting through hole along the extension direction of the first mounting through hole and the second mounting through hole, and the lead pin is inserted into the power device, after the lead pin is inserted in place, the second connecting part tightly holds the lead pin, so that the electrical connection between the power device and the circuit board is realized, and the beneficial effects are that, since the second connecting part is a telescopic structure, the lead pin can be moved along the length direction of the first mounting through hole and the second mounting through hole, the soft connection between the power device and the circuit board is realized, the vibration stress can be released, the power device is prevented from falling off the circuit board, and the connection reliability between the lead pin inside the power device and the wafer chip can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0026] Figure 1 The structural schematic diagram of the specific embodiment provided by the present application is shown in the figure.

[0027] Figure 2 The front view of the specific embodiment provided by the present application is shown in the figure.

[0028] Figure 3 The top view of the specific embodiment provided by the present application is shown in the figure.

[0029] Reference signs:

[0030] 1-First connecting part; 11-Body; 12-Lead pin; 2-Second connecting part; 21-Leaf spring; 211-First segment; 212-Second segment;

[0031] 3-Power device; 31-Lead pin; 4-Circuit board. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0033] The utility model discloses a core provides a kind of connecting structure of power device and circuit board, using the connecting structure can realize the soft connection of power device and circuit board, to be able to release vibration stress, avoid power device to fall on circuit board. Another core of the utility model provides an electronic equipment comprising the connecting structure of the power device and circuit board.

[0034] Please refer to Figure 1 The utility model provides a kind of connecting structure of power device and circuit board, comprising: needle 31, first connecting part 1 and second connecting part 2;First connecting part 1 has first installation through-hole, for needle 31 is passed through circuit board 4 and is inserted in power device 3;Second connecting part 2 has second installation through-hole, for needle 31 is passed through, and second connecting part 2 can be tightly held and electrically connected to needle 31, and can be telescopic along the extension direction of first installation through-hole and second installation through-hole.

[0035] As Figure 1 And Figure 2 As shown, to electrically connect power device 3 on circuit board 4, the bottom of the connecting structure is first connecting part 1, such as flat plate structure or frame structure etc., first connecting part 1 middle position is provided with the first installation through-hole extending along vertical, in cooperation, the upper side of first connecting part 1 is fixed with second connecting part 2 by welding or other any electrically connected mode, second connecting part 2 middle position is provided with the second installation through-hole extending along vertical, first installation through-hole, second installation through-hole can adopt the through-hole with the shape of circular section or rectangular etc., and needle 31 of power device 3 can pass through first installation through-hole and second installation through-hole in sequence.

[0036] Further, needle 31 is metal rod or other any type conductive rod, second connecting part 2 is center hole structure, and can tightly hold needle 31 passing through the second installation through-hole in middle position, and first installation part 11 and second installation part 12 are all electrically conductive structure, then can realize the electrical connection with needle 31 while being tightly held, then power device 3 can be electrically connected to circuit board 4 through the connecting structure.

[0037] When using, refer to Figure 1 And Figure 2As shown in the orientation, the overall structure connecting the first mounting portion and the second mounting portion together is placed at the preset position on the top surface of the circuit board 4, then the pin 12 of the first connecting portion 1 is welded on the circuit board 4, and then the contact pin 31 is inserted into the power device 3 after the pin 12 is welded on the circuit board 4, and the contact pin 31 is inserted into the power device 3. After the pin 31 is inserted into the power device 3, the second connecting portion 2 tightly holds the pin 31, and the electrical connection between the power device 3 and the circuit board 4 is realized. Since the second connecting portion 2 is a telescopic structure, the pin 31 can be moved vertically to realize the soft connection between the power device 3 and the circuit board 4, so that the vibration stress can be released, the power device 3 can be prevented from falling off the circuit board 4, and the connection reliability between the pin 12 inside the power device 3 and the wafer chip can be ensured.

[0038] It should be noted that the type of the second connecting portion 2 is not limited, as long as the above functions can be realized. For example, the second connecting portion 2 includes a cylinder and a clamping jaw. The cylinder is a wave-shaped cylinder, that is, the cross-sectional shape of the side wall of the cylinder along the axial direction of the cylinder is wave-shaped. One end of the cylinder is fixed to the first connecting portion 1, and the other end is provided with a plurality of clamping jaws. The clamping jaw is a metal sheet body, and the plurality of clamping jaws can move towards or away from each other to tightly hold the pin 31 and be electrically connected with the pin 31.

[0039] On the basis of the above embodiment, the first connecting portion 1 further has a pin 12 for fixing the first connecting portion 1 to the circuit board 4, as shown in the orientation. Figures 1 to 3 The first connecting portion 1 has a pin 12 on the side surface. The pin 12 is a metal rod. When in use, the connecting structure is placed at the preset position on the top surface of the circuit board 4, and the pin 12 is welded to the corresponding pad of the circuit board 4, so that the connecting structure can be electrically connected to the circuit board 4.

[0040] On the basis of the above embodiment, the second connecting portion 2 includes a plurality of elastic sheets 21, and the elastic sheets 21 can be telescopic along the extension direction of the first mounting hole and the second mounting hole. The first end of the elastic sheet 21 is fixedly connected to the first connecting portion 1, and the second end is used for abutting against the pin 31.

[0041] As shown in the orientation, Figure 1 and Figure 2 In the second connecting portion 2, a plurality of elastic sheets 21 are arranged outside the first mounting hole, and the inner cavity surrounded by the plurality of elastic sheets 21 is the second mounting hole. The upper ends of the elastic sheets 21 can move close to or away from each other. For example, the plurality of elastic sheets 21 extend in the vertical direction. When in use, the pin 31 is inserted into the first mounting hole and the second mounting hole from bottom to top, and the upper ends of the elastic sheets 21 are pushed away from each other to tightly hold the pin 31. Furthermore, the plurality of elastic sheets 21 adopt a telescopic structure, such as a wave-shaped or sawtooth-shaped structure, so as to drive the pin 31 to move vertically and realize the soft connection between the power device 3 and the circuit board 4.

[0042] It should be noted that the electrical connection between the spring sheet 21 and the first connecting portion 1 is not limited, for example, welding can be used, or the spring sheet 21 has a foot that is attached to the first connecting portion 1 and is connected to the first connecting portion 1 by a fastener; it should also be noted that the number and arrangement of the spring sheet 21 are not limited, as long as the above functions can be achieved, for example, the number of spring sheets 21 is eight, two parallel spring sheets 21 form a group, and four groups of spring sheets 21 are evenly arranged around the center line of the first mounting hole.

[0043] On the basis of the above embodiment, a plurality of spring sheets 21 are evenly arranged around the center line of the mounting hole to cooperatively hold the needle 31 to improve the stability of the needle 31.

[0044] On the basis of the above embodiment, the spring sheet 21 has a non-zero included angle with the extension direction of the first mounting hole, and the second end of the spring sheet 21 is inclined toward the side close to the center line of the mounting hole.

[0045] As shown in Figure 1 and Figure 2 , in the second connecting portion 2, the lower end of the spring sheet 21 is connected to the first connecting portion 1, and a plurality of spring sheets 21 are inclined, the upper end of the plurality of spring sheets 21 extends toward each other, and the top end opening of the second mounting hole is smaller than the bottom end opening, so that the needle 31 is easily inserted from the bottom to the top through the second mounting hole, and the performance of holding the needle 31 is improved, and the connection reliability with the power device 3 is improved.

[0046] On the basis of the above embodiment, a plurality of spring sheets 21 are evenly arranged around the center line of the first mounting hole, as shown in Figure 1 and Figure 2 , to further improve the connection reliability with the power device 3.

[0047] On the basis of the above embodiment, the spring sheet 21 includes a first segment 211 in a wave shape, and all or part of the segments of the spring sheet 21 are in a wave shape, so that the spring sheet 21 has high expansion and contraction performance and high fatigue resistance.

[0048] On the basis of the above embodiment, the spring sheet 21 further includes a second segment 212 in a straight line shape; one end of the second segment 212 is connected to the first end of the first segment 211, the other end is swingably connected to the first connecting portion 1; and the second end of the first segment 211 is used to abut against the needle 31.

[0049] As shown in Figure 1 and Figure 2As shown, the first segment 211 above the spring piece 21 has a wavy structure, and the second segment 212 below the spring piece 21 has a straight structure. The lower end of the second segment 212 is welded to the first connecting part 1, and the upper end of the second segment 212 is connected to the lower end of the first segment 211. In use, the upper end of the first segment 211 can abut against the pin 31. This setting can reduce the extension allowance of the spring piece 21 while satisfying the need to abut against the pin 31, and avoid the spring piece 21 from excessively contracting during the release of vibration stress, causing the pin 31 to slip off.

[0050] Based on the above embodiments, the first connecting part 1 includes a main body 11 and a plurality of pins 12. The main body 11 has a circular structure. Preferably, the plurality of pins 12 are evenly arranged around the center line of the main body 11.

[0051] like Figures 1 to 3 As shown, the first connecting part 1 has a main body 11 located in the middle. The main body 11 adopts a circular ring structure, and the through hole at its center is the first mounting through hole mentioned above. Several pins 12 of the circuit board 4 are arranged around the center line of the main body 11, and the center line of the main body 11 is the center line of the first mounting hole mentioned above. When using this connecting structure to connect the power device 3 and the circuit board 4, it is beneficial to improve the connection reliability between the two.

[0052] Based on the above embodiment, a plurality of spring pieces 21 are connected to the ring segment of the main body 11 located between two corresponding pins 12.

[0053] like Figure 3 As shown, several spring contacts 21 and several pins 12 are evenly arranged around the center line of the main body 11, for example, Figure 1 and Figure 3 In the illustrated embodiment, the first connection part 1 includes three spring contacts 21 and three pins 12. The spring contacts 21 and pins 12 are arranged alternately. Specifically, the first pin 12, the second pin 12 and the third pin 12 are arranged sequentially around the center line of the main body 11. One spring contact 21 is connected to the ring segment of the main body 11 located between the first pin 12 and the second pin 12, another spring contact 21 is connected to the ring segment of the main body 11 located between the second pin 12 and the third pin 12, and yet another spring contact 21 is connected to the ring segment of the main body 11 located between the third pin 12 and the first pin 12. This arrangement helps to further improve the connection reliability between the power device 3 and the circuit board 4.

[0054] It should be noted that the arrangement of the spring piece 21 and the pin 12 is not limited to the example type mentioned above. For example, several spring pieces 21 and corresponding pins 12 are connected to the same ring segment of the main body 11, that is, the line connecting several spring pieces 21 and corresponding pins 12 on the main body 11 extends radially along the main body 11.

[0055] On the basis of the above-mentioned embodiments, the connecting structure for connecting the power device and the circuit board is an integral structure, and thus the connecting structure has simple structure, low manufacturing difficulty, and is beneficial to improve the connection reliability between the power device 3 and the circuit board 4.

[0056] In addition to the connecting structure of the power device and the circuit board, the utility model also provides an electronic equipment including the connecting structure of the power device and the circuit board disclosed in the above-mentioned embodiments, and the structures of other parts of the electronic equipment refer to the prior art, and thus will not be repeated here.

[0057] It should be noted that the relationship terms such as "first" and "second" described above are only used to distinguish one entity from another entity, and do not necessarily require or imply any actual relationship or order between the entities; the "upper surface, lower surface, top, bottom" described above and the orientation words "up, down, left, right" are defined based on the drawings.

[0058] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between various embodiments can be referred to each other.

[0059] The connecting structure for connecting the power device and the circuit board and the high-vibration-resistant motor controller provided by the utility model are described in detail above. The principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above-mentioned embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model.

Claims

1. A connection structure between a power device and a circuit board, characterized in that, The utility model relates to a connecting structure of power device and circuit board, including: A needle (31), a first connecting part (1) and a second connecting part (2); The first connecting part (1) has a first mounting through hole for the needle (31) to pass through the circuit board (4) and be inserted in the power device (3); The second connecting part (2) has a second mounting through hole for the needle (31) to pass through, and the second connecting part (2) can tightly hold and electrically connect the needle (31), and can be telescopic along the extension direction of the first mounting through hole and the second mounting through hole.

2. The connection structure of a power device and a circuit board according to claim 1, characterized in that, The first connecting part (1) further has a pin (12) for fixing the first connecting part (1) to the circuit board (4).

3. The connection structure of a power device and a circuit board according to claim 2, wherein The second connecting part (2) includes a plurality of elastic sheets (21), and the elastic sheet (21) can be telescopic along the extension direction of the first mounting through hole and the second mounting through hole; The first end of the elastic sheet (21) is fixedly connected to the first connecting part (1), and the second end is used for abutting the needle (31).

4. The connection structure of a power device and a circuit board according to claim 3, wherein A plurality of elastic sheets (21) are uniformly arranged around the center line of the second mounting through hole, and are used for tightly holding the needle (31) by mutual cooperation.

5. The connection structure of a power device and a circuit board according to claim 3, wherein The elastic sheet (21) and the extension direction of the first mounting through hole have a non-zero included angle, and the second end of the elastic sheet (21) is inclined towards the side close to the center line of the second mounting through hole.

6. The connection structure of a power device and a circuit board according to claim 4, wherein The elastic sheet (21) includes a first segment (211) in a wave shape.

7. The connection structure of a power device and a circuit board according to claim 6, wherein The elastic sheet (21) further includes a second segment (212) in a straight line shape; One end of the second segment (212) is connected to the first end of the first segment (211), and the other end is swingably connected to the first connecting part (1); And the second end of the first segment (211) is used for abutting the needle (31).

8. The connection structure of a power device and a circuit board according to claim 4, wherein The first connecting part (1) includes a main body (11) and a plurality of pins (12), and the main body (11) is a circular ring structure.

9. The connection structure of a power device and a circuit board according to claim 8, wherein A plurality of elastic sheets (21) are connected to the ring segment of the main body (11) between the corresponding two pins (12).

10. An electronic device, comprising: The utility model relates to a connecting structure of power device and circuit board, including any one of the power device and circuit board connecting structure in the foregoing claims 1 to 9.

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