CN218959198U

CN218959198U - Multilayer PCB board fastening structure

Info

Publication number: CN218959198U
Application number: CN202223439769.2U
Authority: CN
Inventors: 陆亚洲; 赵一川; 廖广彪; 郭惠玖
Original assignee: Zhangjiagang Huajie Electronics Co Ltd
Current assignee: Zhangjiagang Huajie Electronics Co Ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-05-02
Anticipated expiration: 2032-12-20

Abstract

The utility model relates to a multi-layer PCB fastening structure, which comprises a first PCB, a second PCB, a shell with an opening at the upper end and a cover plate for covering the upper end of the shell, wherein the first PCB is fixedly connected above the second PCB, two connecting terminals arranged along the edges of the first PCB are vertically connected with the edges of the bottom surface of the second PCB, the inner wall of the lower part of the shell is inwards protruded, an annular step surface is formed on the inner wall of the shell, two jacks which are in one-to-one correspondence with the connecting terminals are arranged on the step surface, grooves communicated with the lower parts of the jacks are formed on the outer side wall of the shell, the connecting terminals are correspondingly inserted in the jacks one by one, the lower parts of the connecting terminals extend into the grooves and are in threaded connection with the side wall of the shell through screws, and the cover plate is in threaded connection with the top surface of the shell through screws. According to the utility model, the two connecting terminals penetrate through the jacks and extend into the grooves, so that operators can fix the connecting terminals, and the convenience of fastening connection of the multilayer PCB in the shell is improved.

Description

Multilayer PCB board fastening structure

Technical Field

The utility model relates to a multi-layer PCB fastening structure.

Background

The PCB is a commonly used circuit board in various electrical equipment at present, along with the diversification of the functions of the electrical equipment at present and the development of private customization, the product differentiation is larger and larger, the functions of the circuit board which is required to be used by the same product are different due to the different functions, if the same circuit board is used for corresponding to the products with different functions, the cost of the circuit board is wasted, for example, when the multifunctional circuit board is applied to a bottom product, a plurality of circuits and functions on the multifunctional circuit board are idle, and the waste is caused. In order to solve the problem, we provide a double-layer PCB connection mode before, split each function on the circuit board into a plurality of circuit boards, then adopt the mode of upper and lower lamination connection to carry out detachable electric connection, splice the necessary circuit boards of product as required and use to reduce manufacturing cost.

In conventional technology, the single-layer PCB is directly locked on the support column inside the shell through the screw, but, as the bottom-layer PCB is blocked by the upper-layer PCB, the PCB is difficult to be fastened and connected when being assembled in the shell, so that the multi-layer PCB is inconvenient to package, and the application range of the multi-layer PCB is limited. If the bottom layer PCB is fixedly connected into the shell during assembly, the upper and lower layers of PCB are difficult to accurately butt-joint due to the fact that the inner space of the shell is limited, the visual field cannot be aligned and the like, so that a multi-layer PCB fastening structure is needed to be provided, and the technical problem is solved.

Disclosure of Invention

The utility model aims to solve the technical problems that: the utility model provides a multilayer PCB board fastening structure, solves the technical problem that current multilayer PCB board installs difficulty in the casing.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a multilayer PCB board fastening structure, includes first PCB board and second PCB board, still includes an upper end open-ended casing and a apron that is used for covering in the casing upper end, first PCB board fixed connection is in second PCB board top, second PCB board bottom surface edge is connected with two connecting terminal along its edge range perpendicularly, casing lower part inner wall inwards protrudes, an annular step face has been formed on shells inner wall, two jack with connecting terminal one-to-one has been seted up on the step face, the recess with jack lower part intercommunication has been seted up to the casing lateral wall, connecting terminal peg graft in the jack one-to-one, connecting terminal lower part extends to in the recess and through screw and casing lateral wall threaded connection, the apron passes through screw and casing top surface threaded connection.

As a preferred scheme, be connected with the public head of a plurality of PIN connectors on the bottom surface of first PCB board, a plurality of PIN connectors public head set up respectively in first PCB board both ends diagonal position, be connected with the female head of PIN connectors who is connected with the public head one-to-one of PIN connectors on the upper surface of second PCB board, first PCB board and second PCB board are through the many PIN connectors interconnect that corresponds each other.

As a preferable scheme, a silica gel buffer pad is attached to the surface, facing the first PCB, of the cover plate.

As a preferable scheme, the bottom surface of the groove is fixedly connected with a metal backing plate, a threaded hole matched with a screw is formed in the metal backing plate, and the metal backing plate and the shell are integrally injection molded.

The beneficial effects of the utility model are as follows: according to the utility model, the two connecting terminals are connected on the second PCB, and extend into the grooves through the jacks by utilizing the two connecting terminals, so that an operator can fix the two connecting terminals, and then the two connecting terminals are fixedly connected on the shell by adopting the screws, so that the convenience of fastening connection of the multilayer PCB in the shell is improved.

Drawings

The utility model is described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic illustration of an exploded view of the present utility model;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a schematic view showing a connection state of the connection terminal with the housing;

in fig. 1 to 3: 1. the PCB comprises a first PCB, 2, a second PCB, 3, a shell, 4, a cover plate, 5, connecting terminals, 6, a step surface, 7, jacks, 8, grooves, 9, screws, 10, a plurality of PIN connector male heads, 11, a plurality of PIN connector female heads, 12, a buffer cushion, 13, a metal backing plate, 14 and threaded holes.

Detailed Description

Specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

The multi-layer PCB fastening structure comprises a first PCB 1, a second PCB 2, a shell 3 with an opening at the upper end, and a cover plate 4 used for covering the upper end of the shell 3, wherein the first PCB 1 is fixedly connected above the second PCB 2, two connecting terminals 5 arranged along the edges of the bottom surface of the second PCB 2 are vertically connected, the inner wall of the lower part of the shell 1 protrudes inwards, an annular step surface 6 is formed on the inner wall of the shell 1, two jacks 7 corresponding to the connecting terminals 5 one by one are formed on the step surface 6, grooves 8 communicated with the lower part of the jacks 7 are formed on the outer side wall of the shell 3, the connecting terminals 5 are inserted in the jacks 7 one by one, the lower parts of the connecting terminals 5 extend into the grooves 8 and are in threaded connection with the side walls of the shell 3 through screws 9, and the cover plate 4 is in threaded connection with the top surface of the shell 3 through the screws 9.

In this embodiment, the bottom surface of the first PCB board 1 is connected with a plurality of PIN connector PINs 10, the PIN connector PINs 10 are respectively disposed at opposite angles of two ends of the first PCB board 1, the upper surface of the second PCB board 2 is connected with PIN connector PINs 11 which are connected with the PIN connector PINs 10 in a one-to-one correspondence, and the first PCB board 1 and the second PCB board 2 are connected with each other through PIN connectors corresponding to each other. The multi-PIN connector is adopted to connect the first PCB 1 and the second PCB 2, so that the structure is simple, the operation is convenient, and the electrical connection stability is good.

In this embodiment, the silica gel buffer pad 12 is attached to the surface of the cover plate 4 facing the first PCB 1, so that the first PCB 1 can be protected, and the safety of the first PCB 1 is improved.

As shown in fig. 2, in this embodiment, a metal pad 13 is fixedly connected to the bottom surface of the groove 8, and a threaded hole 14 matched with the screw 9 is formed in the metal pad 13, and the metal pad 13 and the housing 3 are integrally injection molded. The metal backing plate 13 is hard in texture and not easy to deform, and is used for fastening the connecting terminal 5, so that the connection reliability and stability of the shell 3 to the connecting terminal 5 can be further improved, and the fastening connection firmness of the multilayer PCB in the shell 3 is improved.

The working principle of the utility model is as follows: as shown in fig. 1-3, according to the utility model, two connecting terminals 5 are connected on a second PCB 2, a step surface 6 is arranged on the inner wall of a housing 3, jacks 7 corresponding to the connecting terminals 5 one by one are arranged on the step surface 6, grooves 8 are arranged on the outer wall of the housing 3, and the two connecting terminals 5 penetrate through the jacks 7 and extend into the grooves 8, so that an operator can fix the two connecting terminals 5 outside the housing 3, and the two connecting terminals 5 are fixedly connected on the housing 3 by using screws 9, thereby improving the convenience of fastening connection of the multi-layer PCB in the housing 3.

The above embodiments are merely illustrative of the principles and effects of the present utility model, and some of the applied embodiments, and are not intended to limit the utility model; it should be noted that modifications and improvements can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the present utility model.

Claims

1. The utility model provides a multilayer PCB board fastening structure, includes first PCB board (1) and second PCB board (2), its characterized in that still includes an upper end open-ended casing (3) and a apron (4) that are used for covering in casing (3) upper end, first PCB board (1) fixed connection is in second PCB board (2) top, and second PCB board (2) bottom surface edge is connected with two connecting terminal (5) along its edge range perpendicularly, and casing (3) lower part inner wall inwards protrudes, has formed an annular step face (6) on casing (3) inner wall, has seted up two jack (7) with connecting terminal (5) one-to-one on step face (6), casing (3) lateral wall offer with recess (8) of jack (7) lower part intercommunication, connecting terminal (5) peg graft in jack (7) one-to-one, connecting terminal (5) lower part extends to recess (8) and passes through screw (9) and casing (3) lateral wall threaded connection, apron (4) pass through screw (9) and casing (3) threaded connection.

2. The multi-layer PCB fastening structure of claim 1, wherein a plurality of PIN connector PINs (10) are connected to the bottom surface of the first PCB (1), the PIN connector PINs (10) are respectively disposed at opposite angles of two ends of the first PCB (1), a PIN connector PIN (11) connected to the PIN connector PINs (10) in a one-to-one correspondence is connected to the upper surface of the second PCB (2), and the first PCB (1) and the second PCB (2) are connected to each other through the PIN connectors corresponding to each other.

3. The multi-layer PCB fastening structure of claim 1, wherein a silicone cushion pad (12) is attached to a surface of the cover plate (4) facing the first PCB (1).

4. The multi-layer PCB fastening structure according to claim 1, wherein a metal base plate (13) is fixedly connected to the bottom surface of the groove (8), threaded holes (14) matched with the screws (9) are formed in the metal base plate (13), and the metal base plate (13) and the shell (3) are integrally injection molded.