CN215377745U

CN215377745U - Wiring terminal

Info

Publication number: CN215377745U
Application number: CN202121120217.8U
Authority: CN
Inventors: 王航; 曹玉永; 赵宣; 宣善青
Original assignee: Sungrow Power Supply Co Ltd
Current assignee: Sungrow Power Supply Co Ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-12-31
Anticipated expiration: 2031-05-24

Abstract

The utility model relates to the technical field of printed circuit board wiring, and discloses a wiring terminal which is used for connecting a PCB (printed circuit board) and a wire to be connected and comprises a terminal body and a connecting piece, wherein the terminal body is electrically connected with the PCB, the terminal body is provided with a screwed part, the connecting piece can be in threaded fit with the screwed part so that the wire to be connected is clamped and fixed on the wiring terminal and is electrically connected with the wiring terminal, and the inner wall of the screwed part can form a chip accommodating cavity with the PCB so that metal chips generated in the process of connecting or disassembling the wire to be connected can be sealed in the chip accommodating cavity and can not freely roll along the surface of the PCB, so that the metal chips can be prevented from being conducted with a circuit on the PCB to cause short circuit of the PCB, and the PCB is protected.

Description

Wiring terminal

Technical Field

The utility model relates to the technical field of printed circuit board wiring, in particular to a wiring terminal.

Background

As shown in fig. 1, the connection terminal 100 'is used to electrically connect a wire to be connected with a PCB board 200'. The connection terminal 100 'generally includes a terminal body 1' made of metal, and a connection member, the terminal body 1 'being provided with a screw part 11', the connection member being screw-fitted to the screw part 11 'to fix a wire to be connected to the terminal body 1' and being electrically connected to the PCB board 200 'through the terminal body 1'.

However, during the process of detaching and fixing the wires to be connected, there is a friction action between the connector and the screw connection portion 11 ', and metal chips are generated during this process, and the metal chips fall onto the PCB 200 ' and freely roll during the subsequent handling and use, which easily causes short circuit of the PCB 200 ', causes damage to equipment and even fire.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a wiring terminal which can collect metal scraps generated in the process of connecting or disassembling a wire to be connected, protect a PCB (printed circuit board) and avoid short circuit of the PCB caused by free rolling of the metal scraps.

Therefore, the utility model adopts the following technical scheme:

the utility model provides a binding post for connect the PCB board and wait to connect the wire, binding post includes terminal body and connecting piece, the terminal body with the PCB board electricity is connected, be equipped with screw-threaded portion on the terminal body, the connecting piece can screw-thread fit in screw-threaded portion, so that wait to connect the wire centre gripping and be fixed in the terminal body and with the terminal body electricity is connected, the inner wall of screw-threaded portion can with PCB forms the bits chamber of holding.

As a preferable scheme of the connection terminal, an end face of the screw connection part, which is far away from the lead to be connected, can be abutted against the PCB.

As a preferred scheme of the wiring terminal, a bonding pad is arranged on the PCB, and the end face of the screw-connection part far away from the wire to be connected is connected with the bonding pad in a welding manner.

As a preferred scheme of the wiring terminal, the screwing part is close to the end face of the PCB and is convexly provided with a plurality of first pins, the pad is provided with a plurality of jacks, the jacks and the first pins are arranged in a one-to-one correspondence manner, and each first pin is welded and connected with the corresponding jack, so that the wires to be connected can sequentially pass through the screwing part and the first pins and are electrically connected with the PCB.

As a preferred scheme of the connection terminal, the connection terminal further comprises a sealing element, the sealing element is arranged between the screwing part and the PCB, and two ends of the sealing element can be respectively abutted against the screwing part and the PCB.

As a preferable aspect of the terminal, the screw part includes a nut, and the nut is riveted or welded to the terminal body.

As a preferred scheme of the connection terminal, the screw part includes a nut, the terminal body is provided with a mounting hole, the nut is in threaded fit with the mounting hole, and the connecting piece is in threaded fit with the nut.

As a preferable aspect of the connection terminal, the connection terminal includes a connection portion through which the terminal body is electrically connected to the PCB board.

As a preferred scheme of the connection terminal, the connection portion includes two mounting pieces and a plurality of second pins, the mounting pieces are arranged opposite to each other, each mounting piece is detachably arranged on the terminal body, at least one second pin is arranged on each mounting piece, and each second pin can be electrically connected with the PCB.

As a preferable mode of the terminal, the connecting portion, the terminal body, and the screw portion are integrally formed.

The utility model has the beneficial effects that:

the utility model provides a wiring terminal which comprises a screwing part used for being matched with a connecting piece to fix a wire to be connected, wherein the inner wall of the screwing part can form a scrap accommodating cavity with a PCB (printed circuit board) plate so as to collect metal scraps generated in the process of connecting or disassembling the wire to be connected, prevent the metal scraps from freely rolling along the surface of the PCB plate and causing short circuit of the PCB plate, and further protect the PCB plate.

Drawings

Fig. 1 is a schematic structural view of a connection terminal provided in the prior art;

fig. 2 is a schematic view of a first structure of a connection terminal according to an embodiment of the utility model;

fig. 3 is a schematic view of a second structure of the connection terminal provided by the embodiment of the utility model;

FIG. 4 is a schematic diagram of a first structure of a PCB board provided by an embodiment of the utility model;

fig. 5 is a schematic view of a third structure of the connection terminal provided by the embodiment of the utility model;

fig. 6 is a schematic diagram of a second structure of a PCB board according to an embodiment of the present invention.

In the figure:

1' -a terminal body; 11' -screw-connecting part;

100' -terminal block; 200' -a PCB board;

1-a terminal body;

11-a threaded connection; 111-a first pin; 112-a threaded segment; 113-a via section;

2-a chip containing cavity;

31-a second pin;

100-a connecting terminal;

200-a PCB board; 201-a pad; 202-jack.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

As shown in fig. 2 to 6, the present embodiment provides a connection terminal 100 for connecting a PCB board 200 and a wire to be connected, the connection terminal 100 comprises a terminal body 1 and a connection member, wherein the terminal body 1 is electrically connected with a PCB 200, a screw part 11 is arranged on the terminal body 1, the connection member can be in screw thread fit with the screw part 11, so that the lead to be connected is clamped and fixed on the terminal body 1 and is electrically connected with the terminal body 1, the inner wall of the screwing part 11 and the PCB 200 can form a chip containing cavity 2, so that metal chips generated by friction between the connecting piece and the screwing part 11 can be collected in the chip containing cavity 2 during the process of connecting or disassembling the lead to be connected, and can not freely roll along the surface of the PCB 200, therefore, the PCB 200 is protected, and the metal chips are prevented from being conducted with a circuit on the PCB 200 to cause short circuit of the PCB 200, so that equipment damage and even fire hazard are prevented.

Optionally, the end face of the screw joint portion 11 away from the wire to be connected can abut against the PCB board 200, that is, the PCB can seal the opening below the screw joint portion 11, so as to seal metal chips generated in the process of connecting or detaching the wire to be connected in the chip containing cavity 2.

Preferably, as shown in fig. 4, a pad 201 is disposed on the PCB 200, and an end surface of the screw portion 11 away from the wire to be connected is connected to the pad 201 by welding, so that on one hand, a sealed chip accommodating cavity 2 can be formed, on the other hand, the current conducting capability of the connection terminal 100 can be improved, and the application range of the connection terminal 100 is expanded.

It is understood that the pads 201 are electrically connected to the wiring on the PCB board 200, and the wires to be connected can be electrically connected to the wiring of the PCB board 200 through the screw part 11 and the pads 201 in sequence.

Illustratively, the screw part 11 and the pad 201 are connected by a reflow soldering process, so that the soldering temperature is easy to control, the screw part 11 and the pad 201 are prevented from being oxidized in the soldering process, and the cost control is facilitated.

Further, as shown in fig. 5 and fig. 6, a plurality of first pins 111 are convexly disposed on an end surface of the screw-connecting portion 11 close to the PCB 200, a plurality of insertion holes 202 are disposed on the pad 201, the insertion holes 202 and the first pins 111 are disposed in a one-to-one correspondence, and each first pin 111 is connected to the corresponding insertion hole 202 in a welding manner, so as to further enhance the current-conducting capability of the terminal 100.

Illustratively, when the insertion holes 202 are formed on the pad 201, the soldering connection between the first pins 111 and the corresponding insertion holes 202 is realized through a wave soldering process, and the soldering connection between the screw part 11 and the pad 201 can be realized at the same time. The wave soldering has high welding efficiency, low processing cost and good welding reliability.

Of course, the connection manner between the screw part 11 and the PCB board 200 is not limited thereto. In other embodiments, when the requirement on the current-conducting capability of the terminal 100 is not high, the screw part 11 and the PCB board 200 do not need to be soldered. At this time, in order to improve the sealing effect of the chip accommodating cavity 2, preferably, the connection terminal 100 further includes a sealing member, the sealing member is disposed between the screw-threaded portion 11 and the PCB 200, and two ends of the sealing member can be respectively abutted against the screw-threaded portion 11 and the PCB 200, so that the sealing property of the chip accommodating cavity 2 can be improved, metal chips are prevented from moving to other areas of the PCB 200 from a gap between the screw-threaded portion 11 and the PCB 200, the processing requirement on the screw-threaded portion 11 can be reduced, and the processing cost can be saved.

Illustratively, the seal is a seal ring. Specifically, the end of the screw connection portion 11 away from the wire to be connected is provided with a sealing groove, the sealing element is disposed in the sealing groove, and two ends of the sealing element are respectively abutted to the bottom of the sealing groove and the PCB board 200.

Optionally, the screw-threaded portion 11 includes a screw-threaded portion 112 and a through-hole portion 113 that are communicated, the screw-threaded portion 112 can be in threaded fit with the connecting piece, and the inner diameter of the through-hole portion 113 is smaller than the inner diameter of the screw-threaded portion 112, so that on one hand, the processing length of the screw-threaded portion 11 can be reduced, the processing efficiency of the wiring terminal 100 is improved, on the other hand, the area of the end portion, close to the PCB 200, of the screw-threaded portion 11 can be improved, and the sealing reliability of the chip accommodating cavity 2 is further ensured. In addition, when the screw part 11 is soldered to the PCB 200, since the soldering area is larger, the soldering reliability of the screw part 11 and the PCB 200 can be ensured. Of course, in other embodiments, the inner diameter of the through hole section 113 may also be smaller than or equal to the inner diameter of the threaded section 112, or the through hole section 113 may not be provided, that is, the length of the threaded section 112 is equal to the length of the threaded portion 11, which may be set according to actual needs, and this embodiment does not limit this.

Preferably, the connection terminal 100 includes a connection part through which the terminal body 1 is electrically connected with the PCB board 200.

Specifically, the connecting portion includes two mounting parts and a plurality of second pins 31 which are arranged oppositely, each mounting part is connected with the terminal body 1, at least one second pin 31 is arranged on each mounting part, and each second pin 31 can be electrically connected with the PCB 200.

Illustratively, the connecting portion, the terminal body 1 and the screw portion 11 are integrally formed, so that the processing cost is low and the processing efficiency is high. Of course, the arrangement of the connection portion, the first pin 111, and the screw portion 11 is not limited thereto. In other embodiments, it is also possible that the screw part 11 comprises a nut riveted or welded to the terminal body 1, and the connecting member can be screwed into the nut to fix the wire to be connected. In addition, the installed part can also be dismantled with terminal body 1 and be connected for when the second pin 31 on the installed part damages, can change corresponding installed part, and need not to change whole binding post 100, can improve this binding post 100's life.

Example two

The present embodiment provides a terminal 100, which is different from the first embodiment in the arrangement of the screw-connecting portion 11.

Considering that the screw part 11 is worn after the terminal 100 is used for a certain period of time, the terminal 100 needs to be replaced, which is costly.

In order to solve the above problem, it is preferable that the screw part 11 includes a nut, the terminal body 1 is provided with a mounting hole, the nut can be screwed into the mounting hole, and the connecting member is screwed into the nut. When the internal threads of the nut become worn, the nut can be replaced without replacing the entire terminal 100, which can increase the service life of the terminal 100 and reduce the cost of the terminal 100.

Specifically, the nut is an inner nut and an outer nut.

In the description of the present specification, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or structure referred to must have a specific orientation, be configured and operated in a specific orientation, and thus, cannot be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. The utility model provides a binding post for connect the PCB board and wait to connect the wire, its characterized in that, binding post includes terminal body (1) and connecting piece, terminal body (1) with PCB board (200) electricity is connected, be equipped with spiro union portion (11) on terminal body (1), the connecting piece can screw-thread fit in spiro union portion (11), so that wait to connect the wire centre gripping and be fixed in terminal body (1) and with terminal body (1) electricity is connected, the inner wall of spiro union portion (11) can with PCB board (200) form and hold bits chamber (2).

2. A terminal according to claim 1, wherein an end face of the screw portion (11) remote from the wire to be connected is capable of abutting against the PCB board (200).

3. A terminal according to claim 1, characterized in that a pad (201) is arranged on the PCB (200), and the end surface of the screw-connection part (11) far away from the lead to be connected is connected with the pad (201) in a welding way.

4. The wiring terminal according to claim 3, wherein a plurality of first pins (111) are convexly arranged on the end surface of the screwing part (11) close to the PCB (200), a plurality of insertion holes (202) are arranged on the bonding pad (201), the insertion holes (202) and the first pins (111) are arranged in a one-to-one correspondence manner, and each first pin (111) is connected with the corresponding insertion hole (202) in a welding manner.

5. The terminal according to claim 1, further comprising a sealing member disposed between the screw portion (11) and the PCB board (200), and both ends of the sealing member are respectively abutted against the screw portion (11) and the PCB board (200).

6. A terminal block according to claim 1, wherein the screw part (11) comprises a nut riveted or welded to the terminal body (1).

7. A terminal block according to claim 1, wherein the screw portion (11) includes a nut, a mounting hole is provided on the terminal body (1), the nut is screw-fitted to the mounting hole, and the connecting member is screw-fitted to the nut.

8. A terminal according to claim 1, characterized in that the terminal comprises a connection portion through which the terminal body (1) is electrically connected with the PCB board (200).

9. A terminal according to claim 8, wherein the connecting portion comprises two oppositely arranged mounting members and a plurality of second pins (31), each of the mounting members is detachably arranged on the terminal body (1), at least one of the second pins (31) is arranged on each of the mounting members, and each of the second pins (31) is electrically connectable with the PCB (200).

10. A terminal according to claim 8, wherein the connecting portion, the terminal body (1) and the screw portion (11) are of an integrally molded structure.