Circuit board assembly and electronic equipment

Abstract

The embodiment of the utility model provides a circuit board assembly and an electronic device, the circuit board assembly comprises a first structural member, a second structural member, a circuit board and an elastic assembly, and the first structural member is connected with the second structural member. The circuit board is located between the first structural member and the second structural member. The elastic assembly is located on the side, facing the first structural part, of the circuit board, is connected with the first structural part and abuts against the circuit board, and the elastic assembly is used for providing acting force for pressing the circuit board to the second structural part. According to the technical scheme of the embodiment of the utility model, the influence on the circuit board structure is reduced while the gap between the structural member and the circuit board is controlled.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and in particular to a circuit board assembly and electronic device. Background Technology

[0002] Thermal conductive materials, such as thermal paste or gel, are typically placed between the heatsink and the chips on the circuit board to fill the gap between them. A thickness of approximately 0.1mm is generally considered ideal for thermal conductivity. To achieve optimal thermal conductivity, the heatsink and circuit board can be flexibly connected, controlling the gap between them. This allows the heatsink and circuit board to press against the thermal conductive material, keeping its thickness around 0.1mm. However, current flexibly connected heatsinks and circuit boards require openings in the circuit board, which can interfere with internal traces and hinder circuit board layout. Utility Model Content

[0003] This utility model provides a circuit board assembly and electronic device, which aims to control the gap between structural components and circuit boards while reducing the impact on the circuit board structure.

[0004] In a first aspect, embodiments of the present invention provide a circuit board assembly, comprising:

[0005] First structural component;

[0006] The second structural component is connected to the first structural component;

[0007] A circuit board is located between the first structural member and the second structural member; and

[0008] An elastic component is located on the side of the circuit board facing the first structural member. The elastic component is connected to the first structural member and abuts against the circuit board. The elastic component is used to provide a force for the circuit board to press against the second structural member.

[0009] Optionally, the first structural component is a heat sink, and a first thermally conductive element is provided between the first structural component and the circuit board; and / or,

[0010] The second structural component is a heat sink, and a second heat-conducting component is provided between the second structural component and the circuit board.

[0011] Optionally, the first structural member has a receiving groove on the side facing the circuit board, and one end of the elastic component extends into the receiving groove and abuts against the groove wall.

[0012] Optionally, the resilient component includes:

[0013] An elastic element is located within the receiving groove, with one end of the elastic element abutting against the groove wall.

[0014] A movable member abuts against the other end of the elastic member, the movable member being at least partially extendable from the receiving groove and abut against the circuit board; and

[0015] A limiting member is connected to the first structural member. The limiting member is at least partially located on the side of the movable member opposite to the elastic member. The limiting member is used to restrict the movement of the movable member along the extension and retraction direction of the elastic member.

[0016] Optionally, the movable member includes a first segment and a second segment connected together, with a first stepped surface formed between the first segment and the second segment, the second segment abutting against the other end of the elastic member, and the limiting member abutting against the first stepped surface.

[0017] Optionally, the elastic element includes a spring;

[0018] The second segment includes a first part and a second part. The first part connects the first segment and the second part. A first step surface is formed between the first part and the first segment. A second step surface is formed between the first part and the second part. The spring is sleeved on the outer periphery of the second part, and the opposite ends of the spring abut against the groove wall of the receiving groove and the second step surface, respectively.

[0019] Optionally, the limiting member is connected to the receiving groove.

[0020] Optionally, the receiving groove includes a first groove and a second groove that are connected to each other, the second groove is located on the outer periphery of the first groove, the elastic member abuts against the bottom wall of the first groove, and the limiting member abuts against the bottom wall of the second groove and is connected to the side wall of the second groove.

[0021] Optionally, the second groove surrounds the outer periphery of the first groove, and the limiting member includes a connecting part and an abutting part. The connecting part is an annular connecting part, which abuts against the bottom wall of the second groove and is connected to the side wall of the second groove. The abutting part is located inside the connecting part and is used to restrict the movement of the movable member along the extension and retraction direction of the elastic member.

[0022] Optionally, the first structural component and / or the second structural component are provided with a first positioning part, and the circuit board is provided with a second positioning part, wherein the first positioning part and the second positioning part are positioned and engaged.

[0023] In a second aspect, embodiments of the present invention provide an electronic device including a circuit board assembly as described in the first aspect.

[0024] The circuit board assembly and electronic device provided in this embodiment of the invention connect a first structural component and a second structural component. A circuit board is located between the first and second structural components. An elastic component is provided on the side of the circuit board facing the first structural component, with one end connected to the first structural component and the other end abutting against the circuit board. This provides a force to press the circuit board against the second structural component, achieving the connection between the circuit board and the second structural component and reducing the gap between them. This connection method eliminates the need for holes in the circuit board, controlling the gap between the circuit board and the second structural component while reducing the impact on the internal wiring of the circuit board, thus facilitating circuit board layout. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a circuit board assembly provided in an embodiment of the present invention;

[0027] Figure 2 A partial cross-sectional view of a circuit board assembly provided in an embodiment of the present invention;

[0028] Figure 3 for Figure 2 A magnified view of point A in the figure;

[0029] Figure 4 A partial cross-sectional view of a circuit board assembly in another state according to an embodiment of the present invention;

[0030] Figure 5 for Figure 4 Enlarged view of point B in the image;

[0031] Figure 6 for Figure 4 An exploded view of the first structural component and the elastic assembly;

[0032] Figure 7 This is a schematic diagram of the structure of the first structural component provided in an embodiment of the present utility model;

[0033] Figure 8 This is a schematic diagram of the structure of the second structural component and the circuit board provided in an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the circuit board provided in one embodiment of the present invention.

[0035] Description of main reference numerals:

[0036] 10. First structural component; 11. Stepped hole; 12. Receiving groove; 121. First groove; 122. Second groove; 100. Fastener; 20. Second structural component; 21. Stud; 22. First positioning part; 30. Circuit board; 31. Chip; 32. Second positioning part; 40. Elastic component; 41. Elastic element; 42. Moving part; 421. First section; 422. Second section; 4221. First part; 4222. Second part; 42a. First stepped surface; 42b. Second stepped surface; 43. Limiting element; 431. Connecting part; 432. Abutting part; 50. Connecting element; 60. First heat-conducting element; 70. Second heat-conducting element. Detailed Implementation

[0037] As described in the background section, in the prior art, when connecting a heat sink and a circuit board, holes need to be made on the circuit board. Specifically, both the heat sink and the circuit board need to have through holes. A screw passes through a spring, the through hole in the heat sink, and the through hole in the circuit board in sequence before being connected to a nut to achieve an elastic connection between the heat sink and the circuit board. One end of the spring abuts against the head of the screw, and the other end abuts against the heat sink. The spring, under compression, can push the heat sink towards the circuit board under the action of elastic restoring force, making the gap between the heat sink and the circuit board smaller. The heat-conducting component between the heat sink and the circuit board is compressed, and the thickness of the heat-conducting component can be controlled. However, this connection method requires holes to be made on the circuit board, which can easily affect the internal wiring of the circuit board and is not conducive to the layout on the circuit board. In fact, in order to ensure that the force is evenly distributed throughout the heat sink, multiple through holes need to be made on the circuit board, which has a significant impact on the circuit board.

[0038] To address the aforementioned problems, this invention provides a circuit board assembly. By connecting a first structural member and a second structural member, a circuit board is positioned between the first and second structural members. An elastic component is then positioned on the side of the circuit board facing the first structural member, connecting to the first structural member and abutting against the circuit board. This elastic component provides a force to press the circuit board firmly against the second structural member, thereby reducing the gap between the circuit board and the second structural member. Furthermore, the connection method between the second structural member and the circuit board in this invention eliminates the need for opening holes in the circuit board, which is more beneficial for internal wiring and circuit board layout.

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0040] Please see Figures 1 to 3 This utility model provides a circuit board assembly. The circuit board assembly includes a first structural member 10, a second structural member 20, a circuit board 30, and an elastic component 40. The first structural member 10 and the second structural member 20 are connected. The circuit board 30 is located between the first structural member 10 and the second structural member 20. The elastic component 40 is located on the side of the circuit board 30 facing the first structural member 10. The elastic component 40 is connected to the first structural member 10 and abuts against the circuit board 30. The elastic component 40 provides a force for the circuit board 30 to press against the second structural member 20.

[0041] Understandably, the first structural component 10 and the second structural component 20 are connected, and the circuit board 30 is located between the first structural component 10 and the second structural component 20. An elastic component 40 is provided on the side of the circuit board 30 facing the first structural component 10. The elastic component 40 is connected to the first structural component 10 and abuts against the circuit board 30, so that the elastic component 40 can provide the circuit board 30 with a force to press it against the second structural component 20, thereby reducing the gap between the circuit board 30 and the second structural component 20. Moreover, the connection between the circuit board 30 and the second structural component 20 can be achieved without drilling holes in the circuit board 30, which can reduce the impact of the connection structure between the circuit board 30 and the second structural component 20 on the internal wiring of the circuit board 30 and is more conducive to the layout of the circuit board 30.

[0042] like Figure 1 As shown, in some embodiments, the first structural member 10 and the second structural member 20 are connected by a fastener 100.

[0043] For example, fastener 100 includes screws, bolts, bolts, etc.

[0044] Combination Figure 7 and Figure 8 As shown, the first structural member 10 is provided with a stepped hole 11, and the second structural member 20 is provided with a stud 21 protruding on the side where the first structural member 10 is located. The stud 21 is located on the outer periphery of the circuit board 30 and is provided with a threaded hole. The screw can pass through the stepped hole 11 of the first structural member 10 and then engage with the threaded hole of the stud 21 to realize the connection between the first structural member 10 and the second structural member 20.

[0045] like Figure 1 As shown, the outer periphery of the circuit board 30 is provided with a connector 50 extending along the second structural member 20 to the first structural member 10. The connector 50 is connected to the first structural member 10 and the second structural member 20 by fasteners 100, thereby realizing the connection between the first structural member 10 and the second structural member 20.

[0046] In some embodiments, the first structural member 10 and the second structural member 20 are snap-fit ​​connected. This application does not limit the connection method of the first structural member 10 and the second structural member 20.

[0047] like Figure 2 and Figure 3 As shown, in some embodiments, the first structural member 10 is a heat sink, and a first thermal conductive element 60 is provided between the first structural member 10 and the circuit board 30. And / or, the second structural member 20 is a heat sink, and a second thermal conductive element 70 is provided between the second structural member 20 and the circuit board 30. A heat sink is provided on one or both sides of the circuit board 30, and a thermal conductive element is provided between the heat sink and the circuit board 30 to guide heat to the heat sink using the thermal conductive element, thereby achieving heat dissipation.

[0048] For example, the first thermal conductive element 60 between the first structural member 10 and the circuit board 30 may be a thermal paste, thermal gel or thermal pad.

[0049] For example, the second thermal conductive element 70 between the second structural member 20 and the circuit board 30 can be made of thermal paste or thermal gel. The circuit board 30 is pressed against the second structural member 20 under the force provided by the elastic component 40, so that the circuit board 30 and the second structural member 20 squeeze the second thermal conductive element 70 between them, reducing the thickness of the second thermal conductive element 70, thereby improving the thermal conductivity of the second thermal conductive element 70 and improving the heat dissipation efficiency.

[0050] For example, such as Figure 9 As shown, a chip 31 is provided on the circuit board 30. A second heat-conducting component 70 between the circuit board 30 and the second structural component 20 contacts the chip 31 to transfer the heat generated by the chip 31 during operation to the second structural component 20, thereby achieving heat dissipation of the chip 31. Specifically, the second heat-conducting component 70 may be located between the chip 31 and the second structural component 20 of the circuit board 30.

[0051] like Figure 3 As shown, in some embodiments, along the direction from the second structural member 20 to the first structural member 10, for example along... Figure 3 In the Z direction shown, the projection of the second heat-conducting element 70 on the circuit board 30 at least partially coincides with the position where the elastic component 40 abuts against the circuit board 30, so that the second heat-conducting element 70 between the circuit board 30 and the second structural component 20 is correspondingly arranged with the elastic component 40, so that the force of the elastic component 40 on the circuit board 30 is transmitted to the second heat-conducting element 70 between the circuit board 30 and the second structural component 20.

[0052] like Figure 3 , Figures 5 to 7As shown, in some embodiments, the first structural member 10 has a receiving groove 12 on the side facing the circuit board 30, and one end of the elastic component 40 extends into the receiving groove 12 and abuts against the groove wall of the receiving groove 12. It can be understood that one end of the elastic component 40 extends into the receiving groove 12 and abuts against the groove wall of the receiving groove 12, while the other end is located outside the receiving groove 12 and abuts against the circuit board 30. By allowing one end of the elastic component 40 to extend into the receiving groove 12, the positioning of the elastic component 40 is achieved, limiting the position of the other end of the elastic component 40 abutting against the circuit board 30, and simultaneously making the structure between the first structural member 10 and the circuit board 30 more compact.

[0053] For example, the circuit board 30 assembly may include one or more resilient components 40.

[0054] like Figure 7 As shown, the first structural member 10 has multiple receiving grooves 12 on the side facing the circuit board 30, and multiple elastic components 40 are correspondingly arranged in the multiple receiving grooves 12. Specifically, the multiple elastic components 40 are spaced apart, and the multiple elastic components 40 respectively provide force to different positions of the circuit board 30, so that the circuit board 30 is subjected to force at multiple points, thereby controlling the gap size between the circuit board 30 and the second structural member 20 at various points.

[0055] For example, multiple elastic components 40 are evenly arranged to ensure that the circuit board 30 is subjected to uniform force.

[0056] In some embodiments, such as Figure 2 , Figure 3 and Figure 6 As shown, the elastic component 40 includes an elastic member 41, a movable member 42, and a limiting member 43. The elastic member 41 is located in the receiving groove 12, with one end of the elastic member 41 abutting against the groove wall of the receiving groove 12. The movable member 42 abuts against the other end of the elastic member 41. The movable member 42 can at least partially extend out of the receiving groove 12 and abut against the circuit board 30. The limiting member 43 is connected to the first structural member 10. The limiting member 43 is at least partially located on the side of the movable member 42 opposite to the elastic member 41. The limiting member 43 is used to restrict the movement of the movable member 42 along the extension and retraction direction of the elastic member 41. Understandably, the movable member 42 can extend under the force of the elastic member 41, so that the movable member 42 can abut against the circuit board 30, thereby transmitting the force of the elastic member 41 to the circuit board 30, so that the circuit board 30 is pressed against the second structural member 20. The limiting member 43 is at least partially located on the side of the movable member 42 away from the elastic member 41, so that the limiting member 43 can restrict the movement of the movable member 42 along the extension and retraction direction of the elastic member 41, that is, limit the extent of extension of the movable member 42, prevent the movable member 42 and the elastic member 41 from detaching from the first structural member 10, realize the assembly of the elastic component 40 and the first structural member 10, limit the position of the elastic component 40 relative to the first structural member 10, and at the same time make the assembly of the circuit board 30 assembly more convenient.

[0057] For example, Figure 4 and Figure 5 The diagram shows the state of the elastic component 40 when the first structural member 10 is not connected to the second structural member 20 by the fastener 100. At this time, the movable member 42 extends partially out of the receiving groove 12 under the force of the elastic member 41. The limiting member 43 abuts against the movable member 42, limiting the length of the movable member 42 extending out of the receiving groove 12, preventing the movable member 42 and the elastic member 41 from detaching from the first structural member 10, thus realizing the assembly between the elastic component 40 and the first structural member 10. Figure 2 and Figure 3 The diagram shows the state of the elastic component 40 when the first structural member 10 is connected to the first structural member 10 by the fastener 100. At this time, the movable member 42 abuts against the circuit board 30, and the movable member 42 transmits the force of the elastic member 41 to the circuit board 30, so that the circuit board 30 presses against the second structural member 20. Under the reaction force of the circuit board 30, the movable member 42 squeezes the elastic member 41, and the movable member 42 retracts into the receiving groove 12 along the extension and retraction direction of the elastic member 41. The limiting member 43 can be separated from the movable member 42.

[0058] For example, when assembling the circuit board 30 assembly, the circuit board 30 can be placed on the second structural member 20, and then the elastic member 41 can be placed in the receiving groove 12 of the first structural member 10, so that the movable member 42 abuts against the elastic member 41. Then, the limiting member 43 is connected to the first structural member 10 and abuts against the movable member 42, thereby realizing the assembly of the elastic member 40 and the first structural member 10. Finally, the first structural member 10 with the elastic member 40 is connected to the second structural member 20, thereby realizing the assembly of the circuit board 30 assembly.

[0059] For example, such as Figure 3 As shown, the first structural component 10 is a heat sink. A first heat-conducting component 60 is provided between the first structural component 10 and the circuit board 30. The first structural component 10 and the second structural component 20 are connected. The movable component 42 abuts against the circuit board 30. Under the reaction force of the circuit board 30, the movable component 42 presses against the elastic component 41. The movable component 42 is flush with the first heat-conducting component 60, which can contact the circuit board 30 to transfer heat from the circuit board 30 to the first structural component 10. Of course, in other embodiments, the movable component 42 presses against the elastic component 41 under the reaction force of the circuit board 30, and the movable component 42 may also be flush with the outer surface of the first structural component 10.

[0060] For example, the elastic element 41 includes, but is not limited to, springs, rubber, foam, etc.

[0061] For example, the extension and retraction direction of the elastic member 41 may be parallel to the direction from the second structural member 20 to the first structural member 10, for example, as... Figure 2As shown in the Z direction, this allows the circuit board 30 to be pressed against the second structural member 20 under the force of the elastic component 40. Alternatively, the extension and retraction direction of the elastic component 41 may be inclined relative to the direction from the second structural member 20 to the first structural member 10.

[0062] like Figure 6 As shown, in some optional embodiments, the movable member 42 includes a first segment 421 and a second segment 422 connected together, with a first stepped surface 42a formed between the first segment 421 and the second segment 422, the second segment 422 abutting against the other end of the elastic member 41, and the limiting member 43 abutting against the first stepped surface 42a to restrict the movement of the movable member 42 along the extension and retraction direction of the elastic member 41.

[0063] Understandably, the outer diameter of the second segment 422 is larger than the outer diameter of the first segment 421, forming a first stepped surface 42a between the first segment 421 and the second segment 422. For example, the movable member 42 includes a first segment 421 and a second segment 422 connected along its axial direction, and the first stepped surface 42a may be perpendicular to the axis of the movable member 42, such as... Figure 6 As shown, or, the first step surface 42a may be tilted relative to the axis of the movable member 42.

[0064] For example, the first step surface 42a can be an annular surface, and the limiting member 43 can be an annular member. The limiting member 43 can be sleeved on the outer periphery of the second segment 422 and abut against the first step surface 42a, so that the moving member 42 is subjected to uniform force.

[0065] like Figure 6 As shown, the elastic element 41 further includes a spring. The second segment 422 includes a first part 4221 and a second part 4222. The first part 4221 connects the first segment 421 and the second part 4222. A first stepped surface 42a is formed between the first part 4221 and the first segment 421, and a second stepped surface 42b is formed between the first part 4221 and the second part 4222. The spring is sleeved on the outer periphery of the second part 4222, and the opposite ends of the spring abut against the bottom wall surface of the receiving groove 12 and the second stepped surface 42b, respectively. It can be understood that the outer diameter of the first part 4221 is larger than the outer diameter of the first segment 421, so that the first stepped surface 42a is formed between the first part 4221 and the first segment 421, and the outer diameter of the first part 4221 is larger than the outer diameter of the second part 4222, so that the second stepped surface 42b is formed between the first part 4221 and the second part 4222. The spring is sleeved on the outer periphery of the second part 4222 and abuts against the second step surface 42b, so that the force applied by the spring to the movable part 42 is more uniform, the movable part 42 can stably abut against the circuit board 30, and the second part 4222 of the movable part 42 can play a guiding role, preventing the spring from twisting and improving the structural stability of the elastic component 40.

[0066] For example, the second step surface 42b may be perpendicular to the axis of the movable member 42, such as... Figure 6 As shown, or, the second step surface 42b may be tilted relative to the axis of the movable member 42.

[0067] In some alternative embodiments, the outer periphery of the movable member 42 is provided with a groove, and the limiting member 43 is movably engaged in the groove to restrict the movement of the movable member 42 along the extension and retraction direction of the elastic member 41.

[0068] like Figure 5 As shown, in some embodiments, the limiting member 43 is connected to the receiving groove 12, so that the limiting member 43 is connected to the first structural member 10, which is beneficial to the positioning of the limiting member 43, so that the limiting member 43 and the movable member 42 can cooperate with each other to achieve the limiting.

[0069] Understandably, the first structural component 10 is a heat sink. The limiting component 43 connected in the receiving groove 12 can reduce the occupation of the outer surface of the first structural component 10 and make it easier for the outer surface of the first structural component 10 to be connected to the circuit board 30 through the first heat-conducting component 60, so that the first heat-conducting component 60 can transfer the heat on the circuit board 30 to the first structural component 10 and improve the heat dissipation efficiency.

[0070] For example, such as Figure 5 As shown, the limiting member 43 is located in the receiving groove 12 and is flush with the outer surface of the first structural member 10, so that the first heat-conducting member 60 can be disposed on the limiting member 43 and the outer surface of the first structural member 10.

[0071] For example, the limiting member 43 may be interference-fitted with the receiving groove 12, or the limiting member 43 may be glued to the side wall surface of the receiving groove 12, or the limiting member 43 may be threadedly fitted with the receiving groove 12, so that the limiting member 43 is connected to the receiving groove 12.

[0072] Furthermore, the receiving groove 12 includes a first groove 121 and a second groove 122 that are connected to each other. The second groove 122 is located on the outer periphery of the first groove 121. The elastic member 41 abuts against the bottom wall of the first groove 121, and the limiting member 43 abuts against the bottom wall of the second groove 122 and is connected to the side wall of the second groove 122 to realize the positioning of the limiting member 43, which facilitates the connection of the limiting member 43 to the first structural member 10, while limiting the maximum extension of the movable member 42. The structure between the first structural member 10, the circuit board 30 and the second structural member 20 equipped with the elastic component 40 is more compact, which makes it easier to realize the positioning and connection between the first structural member 10 and the second structural member 20.

[0073] Specifically, the second groove 122 surrounds the outer periphery of the first groove 121. The limiting member 43 includes a connecting portion 431 and an abutting portion 432. The connecting portion 431 is an annular connecting portion 431, abutting against the bottom wall surface of the second groove 122 and connected to the side wall surface of the second groove 122. The abutting portion 432 is located inside the connecting portion 431 and is used to restrict the movement of the movable member 42 along the extension and retraction direction of the elastic member 41. It can be understood that the connecting portion 431 can be arranged around the outer periphery of the movable member 42. The connecting portion 431 connects to the side wall surface of the second groove 122, increasing the contact area between the limiting member 43 and the second groove 122, enhancing the connection strength between the limiting member 43 and the second groove 122, and ensuring that the limiting member 43 can resist the force transmitted by the movable member 42 and restrict the movement of the movable member 42.

[0074] For example, such as Figure 6 As shown, the radial dimension of the inner ring of the connecting part 431 is greater than or equal to the radial dimension of the first groove 121, so as to avoid blocking the movement of the movable part 42 and the elastic part 41.

[0075] For example, such as Figure 6 As shown, the connecting part 431 can extend along the extension and retraction direction of the elastic member 41 to further increase the connection area of ​​the connecting part 431 and the second groove 122.

[0076] For example, the abutting portion 432 can be annularly abutting the movable member 42, and the abutting portion 432 can be disposed around the outer periphery of the movable member 42. The abutting portion 432 can abut against the first stepped surface 42a of the movable member 42 as described above.

[0077] like Figure 8 As shown, in some embodiments, the first structural member 10 and / or the second structural member 20 are provided with a first positioning part 22, and the circuit board 30 is provided with a second positioning part 32. The first positioning part 22 and the second positioning part 32 are positioned and engaged. It can be understood that the positioning accuracy between the first structural member 10 and / or the second structural member 20 and the circuit board 30 is improved by the positioning and engagement of the first positioning part 22 and the second positioning part 32.

[0078] For example, the first positioning part 22 can be one of a locking block and a locking slot, and the second positioning part 32 can be the other of a locking block and a locking slot. The locking block engages with the locking slot to achieve positioning cooperation between the first positioning part 22 and the second positioning part 32. When the second positioning part 32 is a locking slot, its setting position is relatively free and can be adjusted according to the actual situation, with minimal impact on the internal wiring of the circuit board 30. For example Figure 8 As shown, the second positioning part 32 is located at the edge of the circuit board 30.

[0079] For example, such as Figure 8As shown, the second structural component 20 is provided with a first positioning part 22. The second structural component 20 is a heat sink, which allows the second structural component 20 and the circuit board 30 to be positioned and engaged by the first positioning part 22 and the second positioning part 32, thereby improving the positioning accuracy between the second structural component 20 and the circuit board 30. This facilitates the precise attachment of the second heat-conducting element 70, which is coated on or attached to the second structural component 20, to a location where heat is more concentrated, such as the second heat-conducting element 70 being precisely attached to the chip 31 on the circuit board 30, to ensure heat dissipation efficiency.

[0080] For example, such as Figure 8 As shown, there are two first positioning parts 22, which are spaced apart. Each first positioning part 22 is a cylindrical locking block. There are also two second positioning parts 32, which are spaced apart. Each second positioning part 32 is a circular groove. Each first positioning part 22 is respectively engaged with the two second positioning parts 32.

[0081] This utility model embodiment also provides an electronic device, which includes the circuit board 30 assembly as described above. Exemplary examples include, but are not limited to, mobile phones, tablet computers, and smartwatches. The electronic device having the circuit board 30 assembly described above also possesses all its technical effects, namely, the elastic component 40 can provide a force to the circuit board 30 to press it against the second structural member 20, reducing the gap between the circuit board 30 and the second structural member 20. This eliminates the need for holes in the circuit board 30 to achieve the connection between the circuit board 30 and the second structural member 20, reducing the impact of the connection structure between the circuit board 30 and the second structural member 20 on the internal wiring of the circuit board 30, and is more conducive to the layout of the circuit board 30 and the electronic device.

[0082] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A circuit board assembly, characterized in that, include: First structural component; The second structural component is connected to the first structural component; A circuit board is located between the first structural component and the second structural component; as well as An elastic component is located on the side of the circuit board facing the first structural member. The elastic component is connected to the first structural member and abuts against the circuit board. The elastic component is used to provide a force for the circuit board to press against the second structural member.

2. The circuit board assembly according to claim 1, characterized in that, The first structural component is a heat sink, and a first thermally conductive element is provided between the first structural component and the circuit board; and / or, The second structural component is a heat sink, and a second heat-conducting component is provided between the second structural component and the circuit board.

3. The circuit board assembly according to claim 1, characterized in that, The first structural component has a receiving groove on the side facing the circuit board, and one end of the elastic component extends into the receiving groove and abuts against the groove wall.

4. The circuit board assembly according to claim 3, characterized in that, The elastic component includes: An elastic element is located within the receiving groove, with one end of the elastic element abutting against the groove wall. A movable member abuts against the other end of the elastic member, the movable member being at least partially extendable from the receiving groove and abut against the circuit board; and A limiting member is connected to the first structural member. The limiting member is at least partially located on the side of the movable member opposite to the elastic member. The limiting member is used to restrict the movement of the movable member along the extension and retraction direction of the elastic member.

5. The circuit board assembly according to claim 4, characterized in that, The movable component includes a first segment and a second segment connected together, with a first stepped surface formed between the first segment and the second segment. The second segment abuts against the other end of the elastic component, and the limiting component abuts against the first stepped surface.

6. The circuit board assembly according to claim 5, characterized in that, The elastic element includes a spring; The second segment includes a first part and a second part. The first part connects the first segment and the second part. A first step surface is formed between the first part and the first segment. A second step surface is formed between the first part and the second part. The spring is sleeved on the outer periphery of the second part, and the opposite ends of the spring abut against the groove wall of the receiving groove and the second step surface, respectively.

7. The circuit board assembly according to claim 4, characterized in that, The limiting member is connected to the receiving groove.

8. The circuit board assembly according to claim 7, characterized in that, The receiving groove includes a first groove and a second groove that are connected to each other. The second groove is located on the outer periphery of the first groove. The elastic member abuts against the bottom wall of the first groove, and the limiting member abuts against the bottom wall of the second groove and is connected to the side wall of the second groove.

9. The circuit board assembly according to claim 8, characterized in that, The second groove surrounds the outer periphery of the first groove. The limiting member includes a connecting part and an abutting part. The connecting part is an annular connecting part. The connecting part abuts against the bottom wall surface of the second groove and is connected to the side wall surface of the second groove. The abutting part is located on the inner side of the connecting part. The abutting part is used to restrict the movement of the movable member along the extension and retraction direction of the elastic member.

10. The circuit board assembly according to any one of claims 1-9, characterized in that, The first structural component and / or the second structural component are provided with a first positioning part, and the circuit board is provided with a second positioning part, wherein the first positioning part and the second positioning part are positioned and engaged.

11. An electronic device, characterized in that, Includes the circuit board assembly as described in any one of claims 1-10.

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