Auxiliary pressing structure, circuit board assembly and electronic equipment

Abstract

The utility model provides an auxiliary pressing structure, a circuit board assembly and electronic equipment, and relates to the field of electrical technology. The auxiliary pressing structure comprises a base and an elastic structure, the base is provided with a first face structure, and the base is used for being connected with a to-be-connected structure and supported on the to-be-connected structure through the first face structure; the fixed end of the elastic structure is connected with the base, the free end of the elastic structure and the first face structure are arranged in a spaced mode in the first direction, and the free end of the elastic structure is used for making elastic contact with a to-be-pressed piece in the first direction. Targeted pressing force control does not need to be conducted on the to-be-pressed piece, pressing operation of the to-be-pressed piece on the to-be-connected structure can be rapidly achieved, the free end of the elastic structure is arranged to be spaced from the first face structure in the first direction, and the situation that the pressing force borne by the to-be-pressed piece is too large due to the fact that the elastic force of the elastic structure is too large can be avoided. And the to-be-pressed part can be conveniently placed between the elastic structure and the to-be-connected structure.

Description

Technical Field

[0001] The utility model relates to the field of electrical technology, in particular to an auxiliary pressing structure, a circuit board assembly and an electronic device. Background Art

[0002] In the field of electrical technology, there is a need to compact some small parts. For example, in the inverter circuit of the inverter, there are usually a large number of power tubes, such as MOS tubes (Metal-Oxide-SemiconductorField-Effect Transistor). The power tube needs to be electrically connected to the circuit board and also needs to be in contact with the heat sink. The contact and heat dissipation performance of the power tube and the heat sink will have a great impact on the working performance of the power tube.

[0003] At present, a pressure plate is generally used to press the power single tube onto the radiator. Specifically, the power single tube is located between the pressure plate and the radiator, and the threaded connector passes through the pressure plate and is threadedly connected to the connection hole on the radiator. The clamping force on the power single tube is adjusted by adjusting the depth of the threaded connector screwed into the threaded connection hole. However, this clamping method is not conducive to ensuring the contact performance between the power single tube and the radiator if the clamping force is small. If the clamping force is large, the power single tube may be damaged due to pressure. Therefore, each power single tube needs to adjust the screw-in depth of the threaded connector in a targeted manner. The performance of the clamping structure of the power single tube is insufficient, which is not conducive to quickly and efficiently performing the clamping operation of the power single tube. Utility Model Content

[0004] The utility model aims to solve the problem of how to quickly and efficiently press a power single tube waiting for a pressing member in the related technology to a certain extent.

[0005] In order to solve at least one aspect of the above-mentioned problems to at least a certain extent, in a first aspect, the utility model provides an auxiliary clamping structure, including a base and an elastic structure, wherein the base has a first surface structure, the base is used to be connected to the structure to be connected, and is supported on the structure to be connected through the first surface structure; the fixed end of the elastic structure is connected to the base, and the free end of the elastic structure is spaced apart from the first surface structure in a first direction, and the free end of the elastic structure is used to elastically contact with the part to be clamped in the first direction.

[0006] Optionally, there are multiple elastic structures, and multiple parts to be compressed are respectively compressed on the structure to be connected through the multiple elastic structures.

[0007] Optionally, the elastic structure includes an elastic arm, and an extension direction of the elastic arm is arranged at an angle with the first direction.

[0008] Optionally, a first protrusion is provided on the free end of the elastic arm along the first direction toward one side close to the first surface structure, and contacts the to-be-pressed member through the first protrusion.

[0009] Optionally, the base has a plurality of first stop structures, which are spaced apart in a second direction perpendicular to the first direction, and the elastic structure is arranged between adjacent first stop structures in the second direction, and the first stop structure is used to form a blockage for the part to be pressed in at least one direction.

[0010] Optionally, the first stop structure is provided with at least one of a first stop portion, a second stop portion and the first surface structure, the first stop portion is located in the first direction, and the distance between the first stop portion and the first surface structure is greater than the distance between the free end of the elastic structure and the first surface structure; the second stop portion is located in the second direction, and the second stop portion is used to abut against the part to be pressed;

[0011] And / or, the base further has a second stop structure, which is respectively connected to multiple first stop structures in the second direction, and the second stop structure, the first stop structure and the elastic structure form a receiving groove for accommodating the part to be compressed.

[0012] Optionally, the base is detachably connected to the structure to be connected;

[0013] And / or, at least one of the base and the elastic structure is provided with a weight-reducing structure.

[0014] In the second aspect, the utility model provides a circuit board assembly, comprising a circuit board, a part to be pressed, a structure to be connected and the auxiliary pressing structure as described in the first aspect above, wherein the base of the auxiliary pressing structure is connected to the structure to be connected, and the auxiliary pressing structure presses the part to be pressed onto the structure to be connected through the free end of the elastic structure, and the part to be pressed is connected to the circuit board.

[0015] Optionally, the structure to be connected includes a heat sink, and the part to be compressed includes a single power tube.

[0016] In a third aspect, the utility model provides an electronic device, comprising the auxiliary clamping structure as described in the first aspect above, and / or comprising the circuit board assembly as described in the second aspect above.

[0017] Compared with the relevant prior art, in the auxiliary clamping structure, circuit board assembly and electronic device of the utility model, when the base is connected to the structure to be connected, such as a radiator, the base is supported on the radiator in a first direction, such as the up and down direction, by the first surface structure, the fixed end of the elastic structure is fixedly set by the position of the base relative to the radiator, and the free end of the elastic structure is spaced apart from the first surface structure in the up and down direction, that is, an initial interval is formed between the free end of the elastic structure and the radiator (the contact surface for contacting the first surface structure), and a receiving portion for accommodating a part to be clamped, such as a power single tube, is formed by utilizing the initial interval, so that the part to be clamped is conveniently placed in the receiving portion, and when the part to be clamped is accommodated in the receiving portion, the free end of the elastic structure elastically contacts the part to be clamped, and the elasticity of the elastic structure is utilized to clamp the part to be clamped onto the radiator in the up and down direction. The utility model does not need to carry out targeted clamping force control on the part to be compressed, and can quickly realize the clamping operation of the part to be compressed on the structure to be connected. The free end of the elastic structure is set to be spaced apart from the first surface structure in the first direction, which can avoid excessive elastic force of the elastic structure causing excessive clamping force on the part to be compressed. It is also convenient to place the part to be compressed between the elastic structure and the structure to be connected. In addition, when necessary, multiple parts to be compressed can be compressed in batches through an auxiliary clamping structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the auxiliary pressing structure in the embodiment of the utility model;

[0019] Figure 2 Another structural schematic diagram of the auxiliary pressing structure in the embodiment of the utility model;

[0020] Figure 3 It is another structural schematic diagram of the auxiliary pressing structure in the embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the auxiliary pressing structure used for the circuit board assembly in the embodiment of the utility model;

[0022] Figure 5 for Figure 4 A partial enlarged view of the middle A;

[0023] Figure 6 It is a schematic diagram of the exploded structure of the auxiliary pressing structure used for the circuit board assembly in the embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1-base; 11-first stop structure; 111-first stop portion; 112-second stop portion; 12-second stop structure; S1-first surface structure; 13-accommodating groove; 14-weight reduction structure; 15-first connecting hole; 2-elastic structure; 21-elastic arm; 22-first protrusion; 3-piece to be pressed; 31-power single tube; 4-structure to be connected; 41-heat sink; 411-fin; 5-insulating thermal pad; 6-fastener. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment", "some embodiments", "exemplarily" and "one embodiment" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiment are included in at least one embodiment or embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or embodiments in a suitable manner.

[0029] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0030] In the accompanying drawings, the Z axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis (that is, the direction of the arrow of the Z axis) represents the up, and the negative direction of the Z axis represents the down; the X axis in the accompanying drawings represents the front and back position, and the positive direction of the X axis (that is, the direction of the arrow of the X axis) represents the front side, and the negative direction of the X axis represents the back side; the Y axis in the accompanying drawings represents the horizontal direction and is designated as the left and right position, and the positive direction of the Y axis (that is, the direction of the arrow of the Y axis) represents the right side, and the negative direction of the Y axis represents the left side; it should be noted that the aforementioned Z axis, Y axis and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0031] like Figures 1 to 6 As shown, the utility model provides an auxiliary clamping structure, including a base 1 and an elastic structure 2, the base 1 has a first surface structure S1, the base 1 is used to connect to the structure to be connected 4, and is supported on the structure to be connected 4 through the first surface structure S1; the fixed end of the elastic structure 2 is connected to the base 1, and the free end of the elastic structure 2 is spaced apart from the first surface structure S1 in a first direction, and the free end of the elastic structure 2 is used to elastically contact with the part to be clamped 3 in the first direction.

[0032] It should be noted that this specification will take the example in which the part to be compressed 3 is a power single tube 31, the structure to be connected 4 is a radiator 41, and there is an insulating thermal pad 5 between the power single tube 31 and the radiator 41 to illustrate the contents of the utility model, but it should be understood that without violating the design concept of the utility model, the auxiliary clamping structure of the utility model can also be used in other similar occasions where clamping is required.

[0033] In this specification, the first direction is defined as the up-down direction in the figure, that is, the Z-axis direction in the figure, and the free end of the elastic structure contacts the top surface of the part to be pressed.

[0034] The base 1 is used as a basis for connecting the auxiliary pressing structure with the structure to be connected 4. Its specific structure is not limited and will be described exemplarily later. The first surface structure S1 of the base 1 is usually in contact with the structure to be connected 4, such as the side of the heat sink 41 opposite to the heat dissipation fins 411. The base 1 is connected to the structure to be connected 4 to achieve the relative position fixation of the auxiliary pressing structure and the structure to be connected 4.

[0035] When the relative positions of the base 1 and the structure to be connected 4 are fixed, the free end of the elastic structure 2 is spaced apart from the first surface in the up-down direction, so that a receiving cavity for receiving the component to be compressed 3 is formed between the free end of the elastic structure 2 and the structure to be connected 4 .

[0036] It should be understood that, in the free state when the free end of the elastic structure 2 is not in contact with the part to be pressed 3, if the distance between the free end of the elastic structure 2 and the structure to be connected 4 in the vertical direction is the first distance, then the first distance should be smaller than the second distance, and the second distance is the sum of the thickness of the part to be pressed 3 and the insulating thermal pad 5 in the vertical direction. In this way, the elastic structure 2 can elastically contact with the part to be pressed 3, and use the elasticity of the elastic structure 2 to press the part to be pressed 3 onto the structure to be connected 4.

[0037] In this way, the auxiliary clamping structure of the utility model, when the base 1 is connected to the structure to be connected 4, such as the radiator 41, the base 1 is supported on the radiator 41 in a first direction, such as the up and down direction, by the first surface structure S1, the fixed end of the elastic structure 2 is fixedly set by the position of the base 1 relative to the radiator 41, and the free end of the elastic structure 2 is spaced apart from the first surface structure S1 in the up and down direction, that is, an initial interval is formed between the free end of the elastic structure 2 and the radiator 41 (the contact surface for contacting the first surface structure S1), and a receiving portion for accommodating a part to be clamped 3, such as a power single tube 31, is formed by using the initial interval, so that the part to be clamped is conveniently placed in the receiving portion, and when the part to be clamped 3 is accommodated in the receiving portion, the free end of the elastic structure 2 elastically contacts the part to be clamped 3, and the elasticity of the elastic structure 2 is used to clamp the part 3 to be clamped on the radiator 41 along the up and down direction. The utility model does not need to carry out targeted clamping force control on the part to be compressed 3, and can quickly realize the clamping operation of the part to be compressed 3 on the structure to be connected 4. The free end of the elastic structure 2 is set to be spaced apart from the first surface structure S1 in the first direction, which can avoid excessive elastic force of the elastic structure 2 causing excessive clamping force on the part to be compressed 3. It is also convenient to place the part to be compressed between the elastic structure and the structure to be connected. In addition, when necessary, multiple parts to be compressed 3 can be compressed in batches through an auxiliary clamping structure.

[0038] like Figures 1 to 3 As shown, optionally, there are multiple elastic structures 2.

[0039] It should be understood that the same auxiliary pressing structure can be used to fix one or more parts 3 to be pressed.

[0040] Specifically, the auxiliary pressing structure is provided with one or more elastic structures 2 corresponding to each part to be pressed 3. That is, different parts of the same part to be pressed 3 can be fixed by multiple elastic structures 2, and multiple parts to be pressed 3 can also be pressed on the structure to be connected 4 by multiple elastic structures 2. This specification and drawings take the latter as an example.

[0041] like Figure 4 and Figure 5As shown, it shows that the auxiliary clamping structure has three elastic structures 2, and the three elastic structures 2 are respectively used to clamp one to-be-clamped part 3, but it is not limited to this, and the number of the elastic structures 2 can be determined according to actual needs.

[0042] In this way, the auxiliary pressing structure can respectively press the multiple parts to be pressed 3 through the multiple elastic structures 2, and can realize the pressing operation of the multiple parts to be pressed 3 in batches.

[0043] It should be understood that, in this case, the arrangement of the multiple elastic structures 2 on the base 1 is not a limitation, and the positions of the elastic structures 2 can be set according to the spatial layout of the multiple parts 3 to be compressed.

[0044] like Figure 1 and Figure 2 As shown, optionally, the elastic structure 2 includes an elastic arm 21, and the extension direction of the elastic arm 21 is arranged at an angle with the first direction.

[0045] The extension direction of the elastic arm 21 is usually set at a right angle to the first direction, but it should be understood that the angle between the extension direction of the elastic arm 21 and the first direction can be close to a right angle, so that when there is a dimensional error in the first direction of the part 3 to be pressed, there will be no significant difference in the pressing force applied by the free end of the elastic arm 21 to the part 3 to be pressed along the first direction, which can ensure the stability of the pressing force on the parts 3 to be pressed of the same specification. When the auxiliary pressing structure is used to press multiple parts 3 to be pressed, it is beneficial to maintain the consistency of the pressing force on each part 3 to be pressed.

[0046] In this way, the elastic structure 2 has a simple structure and can provide a stable and reliable pressing force to the pressing member 3 , thus having strong practicality.

[0047] However, it should be understood that the structure of the elastic structure 2 is not limited thereto, and it may also be other structures that can provide a pressing force by utilizing elasticity, such as a structure including a spring. The technical solution of the present utility model will be described below by taking the elastic structure 2 as an elastic arm 21 as an example.

[0048] like Figure 2 As shown, optionally, the free end of the elastic arm 21 is provided with a first protrusion 22 protruding along the first direction toward a side close to the first surface structure S1 , and contacts the to-be-pressed part 3 through the first protrusion 22 .

[0049] In this way, the size requirement of the portion of the elastic arm 21 outside the first protrusion 22 in the first direction can be reduced, thereby ensuring the elastic performance of the elastic arm 21. In addition, the setting of the first protrusion 22 makes it possible for the first protrusion 22 of the elastic arm 21 to be lower in the up and down direction during the up and down swinging of the free end of the elastic arm 21, thereby ensuring that the first protrusion 22 is in contact with the part to be clamped 3.

[0050] like Figures 1 to 6 As shown, optionally, the base 1 has a plurality of first stop structures 11, and the plurality of first stop structures 11 are spaced apart in a second direction perpendicular to the first direction, and an elastic structure 2 is arranged between adjacent first stop structures 11 in the second direction, and the first stop structure 11 is used to form a blockage for the clamping member 3 in at least one direction.

[0051] The second direction may be any direction perpendicular to the up-down direction, for example Figures 1 to 5 It is shown in the figure that the second direction includes the left and right direction, and the four first stop structures 11 are sequentially distributed along the left and right direction, that is, the Y-axis direction. The solution of the utility model will be described later using this as an example. At this time, the first stop structure 11 can form a block to the clamping member 3 in the left and right direction or the up and down direction. However, it should be understood that the second direction can also include the front and back direction, that is, the X-axis direction in the figure, and the second direction can also include the left and right direction and the front and back direction. For example, when the second direction includes the left and right direction and the front and back direction, the first stop structure 11 is set to two groups, one group of multiple first stop structures 11 is sequentially distributed along the Y-axis direction, and the other group of multiple first stop structures 11 is sequentially distributed along the X-axis direction (not shown in this solution figure).

[0052] In this way, the first stop structure 11 can form a block on the part to be pressed 3 in at least one direction, which is beneficial to ensure the position stability of the part to be pressed 3 when being pressed.

[0053] like Figure 1 and Figure 2 As shown, optionally, a first stop portion 111 is provided on the first stop structure 11, the first stop portion 111 is located in the first direction, and the distance between the first stop portion 111 and the first surface structure S1 is greater than the distance between the free end of the elastic structure 2 and the first surface structure S1.

[0054] The distance between the first stopper 111 and the first surface structure S1 may be greater than or equal to the second distance described above (the second distance is the sum of the thicknesses of the part to be compressed 3 and the insulating thermal pad 5 in the up and down directions).

[0055] In this way, in some cases, when the elastic structure 2 is deformed due to force and the distance between the free end of the elastic structure 2 and the first surface structure S1 increases to be greater than the second distance, the first stop portion 111 can limit the upward displacement of the part to be compressed 3, which is beneficial to ensure the position stability of the part to be compressed 3.

[0056] like Figure 1 and Figure 2 As shown, optionally, a second stop portion 112 is provided on the first stop structure 11 , and the second stop portion 112 is located in the second direction, and the second stop portion 112 is used to abut against the part to be compressed 3 .

[0057] Specifically, the position of the second stop portion 112 in the up-down direction is lower than the position of the contact surface on the part to be compressed 3 that contacts the first protrusion 22 in the up-down direction, so that the second stop portion 112 can form a limit for the part to be compressed 3 in the second direction. In the process of placing the part to be compressed 3 into the accommodating portion between the elastic arm 21 and the structure to be connected 4, the second stop portion 112 can position the part to be compressed 3 in the second direction, which is beneficial to ensure the position reliability of the part to be compressed 3.

[0058] It should be understood that the first stopper 111 and the second stopper 112 may be provided on the first stopper structure 11. Exemplarily, the cross-sectional shape of the first stopper structure 11 is generally T-shaped or inverted L-shaped, the lower end of the transversely extending portion of the T-shaped structure or the L-shaped structure forms the first stopper 111, and the side of the vertically extending portion of the T-shaped structure or the L-shaped structure forms the second stopper 112.

[0059] like Figure 1 and Figure 2 As shown, optionally, a first surface structure S1 is provided on the first stop structure 11 .

[0060] Exemplarily, the bottom surface of the vertically extending portion of the T-shaped structure or the L-shaped structure forms the first surface structure S1 , that is, the bottom surface is in contact with the structure 4 to be connected.

[0061] In this way, the base 1 obtains reliable support on the structure to be connected 4 along the second direction on the outside of the elastic structure 2 through the first stop structure 11, the connection reliability between the auxiliary clamping structure and the structure to be connected 4 is high, and thus the fixing performance of the fixed end of the elastic structure 2 is better.

[0062] like Figure 1 and Figure 2 As shown, optionally, the second stop structure 12 is respectively connected to a plurality of first stop structures 11 in the second direction, and the second stop structure 12, the first stop structure 11 and the elastic structure 2 form a receiving groove 13 for receiving the part to be compressed 3.

[0063] Specifically, a first opening is formed below the receiving groove 13, a second opening is formed at one end of the receiving groove 13 opposite to the second stop structure 12 along the second direction, the first opening and the second opening are connected to form an L-shaped structure, and the elastic structure 2 is located at the top of the receiving groove 13. When the elastic structure 2 is an elastic arm 21, in a specific embodiment, the elastic arm 21 can be understood to be formed by cutting the top of the receiving groove 13.

[0064] In this way, a receiving portion for receiving the to-be-pressed member 3 can be formed by the receiving groove 13, and the auxiliary pressing structure has a simple structure and strong practicality.

[0065] Furthermore, the lower end of the second stop structure 12 can form the first surface structure S1, so as to further increase the contact area between the auxiliary pressing structure and the structure to be connected 4, and improve the reliability of the connection between the auxiliary pressing structure and the structure to be connected 4.

[0066] In the above embodiment, optionally, the elastic arm 21 is extended along the second direction, and the fixed end of the elastic arm 21 is connected to the second stop structure 12 .

[0067] This arrangement is beneficial for pressing the part 3 to be pressed when the part 3 to be pressed is placed into the receiving groove 13 through the second opening, i.e., the part 3 to be pressed is in contact with the part 3 to be pressed at a position close to the second opening, which is beneficial for ensuring the pressing reliability of the part 3 to be pressed.

[0068] In the above embodiment, optionally, the base 1 and the structure to be connected 4 are detachably connected.

[0069] Exemplarily, the base 1 is connected to the structure to be connected 4 via a snap-fit ​​structure. For example, a snap-fit ​​tongue is provided on the bottom of the base 1 , for example, on the first surface structure S1 , and the snap-fit ​​tongue extends into a snap-fit ​​hole provided on the structure to be connected 4 and is snap-fitted to the snap-fit ​​hole.

[0070] Exemplarily, a first connecting hole 15 is provided on the base 1, a second connecting hole is provided on the structure to be connected 4, and the fastener 6 passes through the first connecting hole 15 and is connected to the second connecting hole, for example, the fastener 6 passes through the first connecting hole 15 and is threadedly connected to the second connecting hole.

[0071] In this way, the base 1 can be replaced as needed, which facilitates the molding of the base 1 and the structure 4 to be connected.

[0072] Optionally, at least one of the base 1 and the elastic structure 2 is provided with a weight reduction structure 14 .

[0073] like Figure 2 As shown, it shows that the first stop structure 11 and the second stop structure 12 are both provided with shock-absorbing structures, so that the weight of the auxiliary clamping structure can be reduced on the basis of meeting the use requirements, which is conducive to the lightweight design of the auxiliary clamping structure.

[0074] like Figures 4 to 6 As shown, another embodiment of the utility model provides a circuit board assembly, which includes a circuit board, a part to be pressed 3, a structure to be connected 4 and an auxiliary pressing structure as in the above embodiment, wherein a base 1 of the auxiliary pressing structure is connected to the structure to be connected 4, and the auxiliary pressing structure presses the part to be pressed 3 onto the structure to be connected 4 through the free end of the elastic structure 2, and the part to be pressed 3 is connected to the circuit board.

[0075] Specifically, the part to be pressed 3 is electrically connected to the circuit board through a conductive pin.

[0076] Optionally, the structure to be connected 4 includes a heat sink 41, and the part to be pressed 3 includes a power single tube 31. For example, the power single tube 31 is a MOS tube or an IGBT.

[0077] It should be understood that the number of auxiliary pressing structures in the circuit board assembly can be multiple as required, for example Figure 4 and Figure 6 In the embodiment, the number of the auxiliary pressing structures is six, and each auxiliary pressing structure is used to press three power single tubes 31 .

[0078] In this way, the pressing operation of the parts to be pressed 3 on the structure to be connected 4 can be quickly achieved, especially when multiple parts to be pressed 3 are pressed, the working efficiency can be improved, and the pressing reliability and safety of the parts to be pressed 3 can be taken into consideration.

[0079] Another embodiment of the present invention provides an electronic device, which includes the auxiliary pressing structure of the above embodiment, and / or includes the circuit board assembly of the above embodiment. For example, the electronic device may be an inverter.

[0080] Another embodiment of the present invention provides a power system, which includes the electronic device of the above embodiment. For example, the power system is a photovoltaic power generation system, which will not be described in detail here.

[0081] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. An auxiliary pressing structure, characterized in that: The invention comprises a base (1) and an elastic structure (2), wherein the base (1) has a first surface structure (S1), the base (1) is used to be connected to a structure to be connected (4), and is supported on the structure to be connected (4) through the first surface structure (S1); the fixed end of the elastic structure (2) is connected to the base (1), and the free end of the elastic structure (2) is spaced apart from the first surface structure (S1) in a first direction, and the free end of the elastic structure (2) is used to elastically contact with a part to be compressed (3) in the first direction.

2. The auxiliary pressing structure according to claim 1, characterized in that: The number of the elastic structures (2) is plural, and the plurality of parts to be compressed (3) are respectively compressed onto the structure to be connected (4) through the plurality of elastic structures (2).

3. The auxiliary pressing structure according to claim 1, characterized in that: The elastic structure (2) comprises an elastic arm (21), and the extension direction of the elastic arm (21) is arranged at an angle with the first direction.

4. The auxiliary pressing structure according to claim 3, characterized in that: The free end of the elastic arm (21) is provided with a first protruding portion (22) protruding along the first direction toward one side close to the first surface structure (S1), and contacts the part to be pressed (3) through the first protruding portion (22).

5. The auxiliary pressing structure according to any one of claims 1 to 4, characterized in that: The base (1) has a plurality of first stop structures (11), the plurality of first stop structures (11) are spaced apart in a second direction perpendicular to the first direction, the elastic structure (2) is arranged between adjacent first stop structures (11) in the second direction, and the first stop structure (11) is used to form a block for the part to be pressed (3) in at least one direction.

6. The auxiliary pressing structure according to claim 5, characterized in that: The first stop structure (11) is provided with at least one of a first stop portion (111), a second stop portion (112) and the first surface structure (S1); the first stop portion (111) is located in the first direction, and the distance between the first stop portion (111) and the first surface structure (S1) is greater than the distance between the free end of the elastic structure (2) and the first surface structure (S1); the second stop portion (112) is located in the second direction, and the second stop portion (112) is used to abut against the part to be pressed (3); And / or, the base (1) further comprises a second stop structure (12), the second stop structure (12) being respectively connected to a plurality of the first stop structures (11) in the second direction, and the second stop structure (12), the first stop structure (11) and the elastic structure (2) forming a receiving groove (13) for receiving the part to be compressed (3).

7. The auxiliary pressing structure according to any one of claims 1 to 4, characterized in that: The base (1) is detachably connected to the structure to be connected (4); And / or, at least one of the base (1) and the elastic structure (2) is provided with a weight-reducing structure (14).

8. A circuit board assembly, characterized in that: It comprises a circuit board, a part to be pressed (3), a structure to be connected (4) and an auxiliary pressing structure as described in any one of claims 1 to 7, wherein a base (1) of the auxiliary pressing structure is connected to the structure to be connected (4), and the auxiliary pressing structure presses the part to be pressed (3) onto the structure to be connected (4) through the free end of an elastic structure (2), and the part to be pressed (3) is connected to the circuit board.

9. The circuit board assembly according to claim 8, wherein: The structure to be connected (4) comprises a heat sink (41), and the part to be compressed (3) comprises a single power tube (31).

10. An electronic device, characterized in that: It comprises the auxiliary pressing structure as claimed in any one of claims 1 to 7, and / or it comprises the circuit board assembly as claimed in any one of claims 8 and 9.

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