CN220021634U

CN220021634U - Connection structure of PCB and terminal strip

Info

Publication number: CN220021634U
Application number: CN202321356870.3U
Authority: CN
Inventors: 万其凡; 干霖; 曾志伟; 许毅
Original assignee: Wuhan Jinglun Electric Co ltd
Current assignee: Wuhan Jinglun Electric Co ltd
Priority date: 2023-05-28
Filing date: 2023-05-28
Publication date: 2023-11-14
Anticipated expiration: 2033-05-28

Abstract

The utility model provides a connecting structure of a PCB and a terminal strip, which comprises the terminal strip, the PCB and a fixing screw, wherein the top end of the terminal strip is provided with a copper strip, the PCB is positioned above the terminal strip, one end of the terminal strip is provided with a wiring hole, and the fixing screw is used for connecting the copper strip with the PCB through the wiring hole. According to the utility model, the PCB is directly fixed on the terminal strip through the screw, so that the connection between the PCB and the terminal strip is simplified, the screw can play roles of fixing and conducting at the same time, and the cost is reduced.

Description

Connection structure of PCB and terminal strip

Technical Field

The utility model belongs to the field of electrical equipment, and particularly relates to a connecting structure of a PCB and a terminal strip.

Background

Three-phase change switches are often used in low-voltage distribution network systems to solve the problem of three-phase imbalance generated by the distribution system. The three-phase reversing switch relates to connection of the PCB and the wiring terminal, and at present, common connection structure technology of the PCB and the wiring terminal comprises plug-in connection, printed connection, welded connection and the like. The plug-in connection and the printed connection have higher reliability and stability, but have higher manufacturing cost and lower production efficiency. While welded connections have faster production and assembly speeds, but are less reliable and less stable.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model provides a connecting structure of a PCB and a terminal strip, which is reliable in connection and reduces cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a connection structure of PCB and terminal strip, includes terminal strip, PCB and fixed screw, the top of terminal strip is provided with the copper bar, the PCB is located the terminal strip top just the wiring hole has been seted up to the one end of terminal strip, the fixed screw is connected copper bar and PCB through the wiring hole.

Further, the top of terminal bar has seted up horizontal through-hole, the upper portion of through-hole is provided with vertical screw post, the copper bar is located the through-hole, the wiring hole of PCB is located the top of vertical screw post.

Further, the outer end part of the through hole is provided with a limit protrusion.

Further, the set screw is in interference fit with the vertical through hole.

Further, the upper half part of the copper bar is square, the lower half part of the copper bar is semi-cylindrical, and the horizontal through holes are matched with the copper bar in shape.

Further, a limiting protrusion is arranged on one side, close to the outer wire end portion of the copper bar, of the horizontal through hole.

Further, one end of the copper bar, which is far away from the limiting protrusion, is further provided with a second wiring terminal, and the second wiring terminal is provided with a wiring through hole.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the PCB is directly fixed on the terminal strip through the screw, so that the connection between the PCB and the terminal strip is simplified, the screw can conduct electricity while fixing the PCB and the terminal strip, and the cost is reduced.

Drawings

FIG. 1 is an external schematic view of an embodiment of the present utility model;

FIG. 2 is a top view of an embodiment of the present utility model;

FIG. 3 is a side cross-sectional view of an embodiment of the present utility model;

FIG. 4 is a schematic view of a copper bar structure;

in the drawings, the list of components represented by the various numbers is as follows:

1. the terminal strip, 2, PCB,3, set screw, 4, copper bar, 5, screw post, 6, spacing protruding, 7, vertical through-hole, 8, second wiring end.

Detailed Description

The present utility model will be described in further detail with reference to specific examples so as to more clearly understand the present utility model by those skilled in the art.

As shown in fig. 1-2, a connection structure of a PCB and a terminal strip includes a terminal strip 1, a PCB2 and a fixing screw 3, wherein a copper strip 4 is disposed at the top end of the terminal strip 1, the PCB2 is located above the terminal strip 1, and a wiring hole is formed at one end of the terminal strip, and the fixing screw connects the copper strip with the PCB2 through the wiring hole. Wherein, the wiring hole of PCB passes through the copper line connection of PCB with the electronic device on the PCB, covers copper around the wiring hole, when connecting PCB2 and terminal bar 1, arranges terminal bar 1 top in PCB2, fixes PCB2 on terminal bar 1 through set screw 3, and set screw 3 pushes up the copper bar 4 of terminal bar 1 simultaneously, realizes electrical connection when realizing fixed connection, has simplified the connection of PCB2 and terminal bar 1 to reduce cost.

Specifically, as shown in fig. 1-3, a horizontal through hole is formed in the top of the terminal strip 1, a vertical screw hole column 5 is formed in the upper portion of the through hole, the copper bar 4 is horizontally inserted into the through hole, and a wiring hole of the PCB2 is located at the top end of the screw hole column 5.

The upper surface of copper bar 4 has still seted up vertical through-hole 7, vertical through-hole is located the below of screw post 5, like this when fixed screw 3 screws up, and the terminal and the vertical through-hole cooperation of fixed screw 3, fixed screw 3 can restrict the horizontal migration of copper bar 4, improves connection stability.

Preferably, the fixing screw 3 is in interference fit with the vertical through hole 7, so that the connection stability of the fixing screw 3 and the copper bar 4 is further improved, and meanwhile, the contact area of the fixing screw 3 and the copper bar 4 is increased, and the electrical connection performance of the PCB2 and the copper bar 4 is improved.

As shown in fig. 3-4, the upper half of the copper bar 4 is square, the lower half is semi-cylindrical, and the horizontal through hole is matched with the shape of the copper bar 4, so that compared with a full square copper bar, the copper consumption can be reduced, the cost can be reduced, and meanwhile, the copper bar 4 can be prevented from rotating in the horizontal through hole.

One side of the horizontal through hole, which is close to the outer wiring end part of the copper bar 4, is provided with a limiting protrusion 6, the copper bar 4 is inserted from the opposite side of the limiting protrusion 6 of the horizontal through hole, and the limiting protrusion 6 props against the copper bar 4 to limit and prevent the copper bar from falling off.

The copper bar 4 is further provided with a second wiring terminal 8 at one end far away from the limiting protrusion 6, and the second wiring terminal 8 is provided with a wiring through hole, so that when an external wiring terminal is used for external wiring, the second wiring terminal 8 can be used for carrying out extra wiring inside the device according to use requirements.

Mechanisms, components, and members not described in the specific structure of the present utility model are all existing structures already existing in the prior art. Can be purchased directly from the market.

The foregoing is merely a preferred embodiment of the present utility model, and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a connection structure of PCB and terminal strip, its characterized in that includes terminal strip (1), PCB (2) and set screw (3), the top of terminal strip (1) is provided with copper bar (4), PCB (2) are located terminal strip (1) top just wiring hole has been seted up to the one end of terminal strip, the set screw is connected copper bar and PCB through the wiring hole.

2. The connecting structure of the PCB and the terminal strip according to claim 1, wherein a horizontal through hole is formed in the top of the terminal strip (1), a vertical screw hole column (5) is formed in the upper portion of the through hole, the copper bar (4) is located in the through hole, and a wiring hole of the PCB (2) is located at the top end of the screw hole column (5).

3. The connecting structure of the PCB and the terminal strip according to claim 2, wherein the upper surface of the copper bar (4) is further provided with a vertical through hole (7), and the vertical through hole is positioned below the screw hole column (5).

4. A connection structure of a PCB and a terminal block according to claim 3, characterized in that the fixing screw (3) is interference fit with the vertical through hole (7).

5. The connection structure of the PCB and the terminal block according to claim 1, wherein the upper half of the copper bar (4) is square, the lower half is semi-cylindrical, and the horizontal through hole is matched with the shape of the copper bar (4).

6. The connection structure of a PCB and a terminal block according to claim 5, wherein a side of the horizontal through hole near an outer terminal portion of the copper bar (4) is provided with a limit protrusion (6).

7. The connection structure of the PCB and the terminal block according to claim 6, wherein a second terminal (8) is further provided at an end of the copper bar (4) far away from the limiting protrusion (6), and the second terminal (8) is provided with a wiring through hole.