CN-224233909-U - Circuit board connection structure and electric appliance

Abstract

The utility model relates to a circuit board connecting structure and an electric appliance, and belongs to the field of electric appliances. The circuit board connecting structure comprises a box body assembly, a first circuit board and a second circuit board, wherein the box body assembly is provided with a containing cavity, the first circuit board is arranged on the box body assembly and is located in the containing cavity, the second circuit board is connected with the first circuit board in a welding mode in the vertical direction of one of the first circuit boards, which is close to the board edge of the box body assembly, and the second circuit board is located in the containing cavity. The utility model discloses a circuit board connecting structure, which expands the board distribution space in the vertical direction by arranging a second circuit board on the side of a first circuit board, skillfully solves the limit of the appearance of a product on a board frame of the first circuit board, and realizes higher integration level under the condition of not changing the appearance of the product.

Inventors

• LEI KAI
• WANG QIANG

Assignees

• 广东尚研电子科技股份有限公司

Dates

Publication Date

20260512

Application Date

20250506

Claims (10)

1. 1. The utility model provides a circuit board connection structure which characterized in that, circuit board connection structure include: The box body assembly (1), the box body assembly (1) is provided with a containing cavity (101); A first circuit board (2), the first circuit board (2) being arranged on the box assembly (1) and being located in the accommodation cavity (101); The second circuit board (3), the second circuit board (3) with first circuit board (2) are in through the welded mode one of them of first circuit board (2) is close to the vertical direction on the board limit of box subassembly (1), second circuit board (3) are located hold chamber (101).
2. 2. The circuit board connection structure according to claim 1, wherein the first circuit board (2) includes a first mounting surface (21) and a second mounting surface (22), the first mounting surface (21) being abutted against the case assembly (1), the second circuit board (3) being soldered to one of the second mounting surfaces (22) near a board edge of the case assembly (1), the second circuit board (3) being in a perpendicular relationship with the second mounting surface (22).
3. 3. The circuit board connection structure according to claim 2, wherein the first circuit board (2) is provided with first mounting holes (201), the number of the first mounting holes (201) is plural, the plural first mounting holes (201) are circumferentially arranged around the first circuit board (2), and the first circuit board (2) is connected with the case assembly (1) through the plural first mounting holes (201).
4. 4. A circuit board connection structure according to claim 3, wherein the first mounting hole (201) has a circular cross-sectional shape.
5. 5. The circuit board connection structure according to claim 1, wherein the second circuit board (3) includes a second circuit board main body (31) and fixing members (32), the number of the fixing members (32) is plural, a plurality of the fixing members (32) are provided on the second circuit board main body (31), the first circuit board (2) is provided with second mounting holes (202), the number of the second mounting holes (202) is plural, and the second circuit board main body (31) is provided on a plurality of the second mounting holes (202) of the first circuit board (2) through a plurality of the fixing members (32) in one-to-one correspondence.
6. 6. The circuit board connection structure according to claim 5, wherein the second circuit board main body (31) includes a contact surface (311) and a soldering surface (312), the contact surface (311) being abutted against the first circuit board (2), the soldering surface (312) being soldered to the first circuit board (2), the soldering surface (312) being in a perpendicular relationship with the first circuit board (2).
7. 7. The circuit board connecting structure according to claim 5, wherein, The section shape of the fixing piece (32) is square; and/or the second mounting hole (202) has a circular cross-sectional shape; And/or the second circuit board main body (31) and the plurality of fixing pieces (32) are integrally formed.
8. 8. The circuit board connection structure according to claim 1, wherein the case assembly (1) includes a mounting base plate (11) and a protection side plate (12), the protection side plate (12) is disposed around the mounting base plate (11), the protection side plate (12) and the mounting base plate (11) are enclosed to form the accommodating chamber (101), and the first circuit board (2) is disposed on the mounting base plate (11).
9. 9. The circuit board connection structure according to claim 8, wherein the mounting base plate (11) includes a base plate body (111) and mounting columns (112), the number of the mounting columns (112) is plural, a plurality of the mounting columns (112) are circumferentially arranged around the base plate body (111), the first circuit board (2) is provided with first mounting holes (201), the number of the first mounting holes (201) is plural, and a plurality of the first mounting holes (201) are arranged in one-to-one correspondence with a plurality of the mounting columns (112).
10. 10. An electric appliance is characterized in that, the electric appliance comprises: the circuit board connection structure of any one of claims 1 to 9; The electric appliance body, the circuit board connection structure sets up on the electric appliance body.

Description

Circuit board connection structure and electric appliance Technical Field The utility model relates to the field of electric appliances, in particular to a circuit board connecting structure and an electric appliance. Background In the prior art, a circuit board in an electric appliance adopts a through hole, a blind buried hole or a flexible connector to realize interlayer interconnection, but the connection mode often has a plurality of problems, such as large occupied space of the traditional through hole, limitation of wiring density, complex blind buried hole process, higher cost, poor reliability of the flexible connector and easiness in generation of poor contact. Moreover, some products require a relatively high sheet frame shape, resulting in a product circuit board that cannot dispose as many electronic components as possible within a limited planar space. The current market demands higher integration, lower cost board connection schemes. Disclosure of utility model Based on the above, it is necessary to provide a circuit board connection structure and an electric appliance for the problem that the connection manner between circuit boards in the electric appliance is not reasonable. The circuit board connecting structure comprises a box assembly, a first circuit board and a second circuit board, wherein the box assembly is provided with a containing cavity, the first circuit board is arranged on the box assembly and located in the containing cavity, the second circuit board and the first circuit board are connected in a welding mode in the vertical direction of one of the first circuit boards, which is close to the board edge of the box assembly, and the second circuit board is located in the containing cavity. The structure of the application effectively avoids the defects of the traditional scheme compared with the PCB lamination technology of the traditional through holes, blind buried holes and flexible connectors. The traditional through hole has large occupied space and severely limits wiring density, the structure ensures that the vertical space is fully utilized and the wiring density is greatly improved on the premise of ensuring that the size of the board frame of the first circuit board is unchanged by welding and connecting the second circuit board and the first circuit board in the vertical direction of the board edge, the blind buried hole process is complex and high in cost, the welding and connecting mode adopted by the structure has simple process, the production cost is effectively reduced, the flexible connector has the problems of poor reliability and poor contact easiness, and the welding and connecting has higher stability and reliability, and the signal transmission quality is ensured. In addition, aiming at the problem that the circuit board cannot be completely laid in the limited plane space due to high requirements on the shape of the plate frame of part of products, the structure expands the plate layout space in the vertical direction by arranging the second circuit board on the side of the first circuit board, skillfully solves the limitation of the appearance of the products on the plate frame of the first circuit board, realizes higher integration under the condition of not changing the appearance of the products, meets the urgent requirements of the market on the high-integration and low-cost plate stacking connection scheme, and has wide application prospect and remarkable economic benefit. The holding cavity provides stable installation space for the first circuit board and the second circuit board, ensures that two circuit boards are positioned at proper positions in the box body assembly, avoids shaking and shifting caused by the influence of external environment, thereby guaranteeing the stability of welded connection and maintaining the reliability of signal transmission. In one embodiment, the first circuit board comprises a first mounting surface and a second mounting surface, the first mounting surface is propped against the box assembly, the second circuit board is welded with one of the second mounting surfaces, which is close to the board edge of the box assembly, and the second circuit board is in vertical relation with the second mounting surface. The second circuit board is connected with the first mounting surface in a welding mode, so that the connection has higher reliability compared with the connection of a traditional flexible connector. The welding connection can provide stable electrical connection, so that the signal transmission problem caused by poor contact is reduced, the reliable transmission of signals between two circuit boards is ensured, and the performance and stability of the whole circuit system are improved. Meanwhile, the connecting mode also avoids the problems of large occupied space and limited wiring density of the traditional through holes, and the defects of complex blind buried hole technology and higher cost. The second