CN219437226U

CN219437226U - Structure for preventing terminal wire welded on PCB from being easily torn

Info

Publication number: CN219437226U
Application number: CN202320195284.9U
Authority: CN
Inventors: 许开河; 祁振; 缪燕; 李元
Original assignee: Rongda Hezhong Xiamen Technology Group Co ltd
Current assignee: Rongda Hezhong Xiamen Technology Group Co ltd
Priority date: 2023-02-13
Filing date: 2023-02-13
Publication date: 2023-07-28
Anticipated expiration: 2033-02-13

Abstract

The utility model relates to the technical field of circuit boards, in particular to a structure for preventing terminal wires welded on a PCB from being easily torn, which comprises the following components: a PCB circuit board; a plurality of bonding wire bonding pads are arranged on the PCB; the terminal wire is characterized in that one end of the terminal wire is removed from the wire skin to expose the terminal wire core; the PCB circuit board is provided with a threading groove for the terminal wire to pass through, and the threading groove is used for reducing stress at the wire core of the terminal wire and the wire skin of the terminal wire; according to the utility model, the wire penetrating groove is formed in the PCB circuit board, and the wire penetrating groove is added to enable the terminal wire to pass through the groove and then be welded on the bonding wire pad, so that the wire penetrating groove has the strength of pulling the terminal wire, the stress of the wire core and the wire skin is reduced, the wire is prevented from being broken, and the reworking or scrapping situation is reduced or avoided.

Description

Structure for preventing terminal wire welded on PCB from being easily torn

Technical Field

The utility model relates to the technical field of circuit boards, in particular to a structure for preventing terminal wires welded on a PCB from being easily broken.

Background

The circuit board is also called a circuit board and a printed board, is an important electronic component, is a support body of an electronic component, and is a carrier for electrically connecting the electronic component with each other. In the prior art, for reasons of space problem and height limitation, in order to conduct connection signals, as shown in fig. 6, one end of a terminal wire is welded on a PCB (small optocoupler) and the other end of the terminal wire is directly inserted on a main control board seat (main board optocoupler), but during the production process or the transportation process, the wire is slightly pulled to disconnect at a wire core and a wire skin, so that reworking or scrapping is caused.

Disclosure of Invention

The utility model aims to provide a structure for avoiding the terminal wire welded on the PCB from being easily torn off so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a structure for avoiding easy tearing of a terminal wire soldered on a PCB, comprising:

a PCB circuit board; a plurality of bonding wire bonding pads are arranged on the PCB;

the terminal wire is characterized in that one end of the terminal wire is removed from the wire skin to expose the terminal wire core;

and the PCB is provided with a threading groove for the terminal wire to pass through, and the threading groove is used for reducing the stress of the wire core of the terminal wire and the wire skin of the terminal wire.

Further, the groove edge of the wire penetrating groove is provided with a round angle or a chamfer angle.

Further, the PCB circuit board also comprises a soft belt, wherein the soft belt is positioned on the PCB circuit board, two ends of the soft belt cross terminal wires, and one surface of the soft belt, which is contacted with the terminal wires, is an adhesive surface.

Further, a terminal line between the terminal line core and the soft belt forms a terminal line crimp portion.

Further, an avoidance groove is formed in the PCB, and the avoidance groove is close to one side of the terminal line core and is used for accommodating the terminal line fold part.

Further, the wire penetrating groove is an annular through groove.

Further, the wire penetrating groove is a plurality of independent through holes.

Further, the wire penetrating groove is a strip-shaped groove which is opened at the side face of the PCB.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the wire penetrating groove is formed in the PCB, so that the terminal wire is welded to the bonding wire pad after passing through the groove, and the wire penetrating groove has the strength of pulling the terminal wire, so that the stress of the wire core and the wire skin is reduced, and the wire is prevented from being disconnected.

The groove edge of the wire penetrating groove is provided with a round angle or a chamfer angle. Through setting up fillet or chamfer, when the terminal line passes through the wire casing, can reduce the friction, be favorable to protecting the terminal line, avoid the line skin wearing and tearing of terminal line.

According to the utility model, the terminal wire between the terminal wire core and the soft belt forms the terminal wire fold part, and the terminal wire fold part is formed, so that even if the terminal wire is pulled to a certain extent, the stuck terminal wire falls off from the adhesive surface, and the terminal wire fold part can be buffered, so that the situation that the terminal wire core and the wire skin are broken can be greatly avoided, and the reworking or scrapping situation is reduced or avoided.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present utility model.

Fig. 2 is a schematic structural diagram of embodiment 2 of the present utility model.

Fig. 3 is a schematic structural diagram of embodiment 3 of the present utility model.

Fig. 4 is a schematic structural diagram of embodiment 4 of the present utility model.

Fig. 5 is a schematic structural diagram of embodiment 5 of the present utility model.

Fig. 6 is a schematic diagram of the connection.

In the figure: 1-PCB circuit board, 2-bonding wire pad, 3-terminal line, 4-terminal line sinle silk, 5-wire through groove, 6-fillet or chamfer, 7-through groove, 8-through hole, 9-opening, 10-bar groove, 11-soft area, 12-dodge groove, 13-terminal line fold part.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "upper end," "lower end," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "sleeved," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-6, the present utility model provides a technical solution:

example 1, as shown in figure 1,

a PCB circuit board 1; a plurality of bonding wire bonding pads 2 are arranged on the PCB circuit board 1;

a terminal wire 3, wherein one end of the terminal wire 3 is removed from the wire skin to expose a terminal wire core 4;

the PCB circuit board 1 is provided with a threading groove 5 for the terminal wire 3 to pass through, and the threading groove is used for reducing the stress of the wire core 4 of the terminal wire and the wire skin of the terminal wire 3.

In order to solve the problem that one end of the terminal wire 3 is welded on a PCB (small optocoupler) and the other end is directly inserted on a main control board seat (main board optocoupler connection seat), the defect that disconnection occurs at the wire core and the wire skin can occur due to slight pulling occurs.

Specifically, the slot edge of the wire passing slot 5 is provided with a round angle or chamfer 6. By arranging the fillets or chamfers 6, friction can be reduced when the terminal wire 3 passes through the wire penetrating groove 5, which is beneficial to protecting the terminal wire 3 and avoiding the abrasion of the wire skin of the terminal wire 3.

Example 2, as shown in fig. 2, differs from example 1 in that:

the flexible tape 11 is positioned on the PCB circuit board 1, two ends of the flexible tape 11 cross the terminal wire 3, and one surface of the flexible tape 11, which is contacted with the terminal wire 3, is an adhesive surface. The terminal wire 3 between the terminal wire core 4 and the soft belt 11 forms a terminal wire crimp portion 13.

In this embodiment, the terminal wire 3 is adhered by providing a flexible tape 11 having elasticity and forming an adhesive surface by providing an adhesive surface having a certain adhesion on one side of the flexible tape 11. When the other end of the terminal wire 3 passes through the wire through groove 5 and is inserted on the main board optocoupler connector, a part of the terminal wire 3 can be reserved to form a terminal wire fold part 13, and then the terminal wire 3 is adhered on the adhesive surface.

By forming the terminal line crimp portion 13, even if a certain degree of pulling occurs, the stuck terminal line 3 falls off from the stuck surface, and buffering can be performed due to the existence of the terminal line crimp portion 13, so that the disconnection of the terminal line core 4 and the line skin can be greatly avoided.

Example 3, as shown in fig. 3, differs from example 2 in that: an avoidance groove 12 is formed in the PCB 1, and the avoidance groove 12 is close to one side of the terminal line core 4 and is used for accommodating the terminal line fold part 13.

In this embodiment, the disadvantage is that the terminal line fold portion 13 occupies a certain space, and the avoiding groove 12 is formed on the PCB circuit board 1, so that the terminal line fold portion 13 is placed in the avoiding groove 12, thereby alleviating the disadvantage.

Example 4, as shown in fig. 4, differs from examples 1, 2, and 3 in that:

the threading groove 5 is an annular through groove 7.

Example 4, as shown in fig. 4, differs from examples 1, 2, and 3 in that:

the threading groove 5 is provided with a plurality of independent through holes 8.

Example 5, as shown in fig. 5, differs from examples 1, 2, and 3 in that:

the threading groove 5 is a strip-shaped groove 10 which is opened 9 at the side surface of the PCB circuit board 1.

The utility model, taken together, is:

1. the bonding wire pad 2 is used for connecting a signal to the bonding terminal wire core conductor 4.

2. The terminal wires 3 are three, namely red, green and blue, are 3 pins respectively, and play a role in connection and conduction between the main control board and the optocoupler small board, as shown in fig. 1 and 6, one end of the terminal wire 3 is welded on a bonding wire bonding pad 2 of the small board, and the other end of the terminal wire passes through a wire through slot 5 and is inserted on a main board optocoupler connecting seat of the main control board, so that the connection and conduction effects are achieved.

3. The terminal wire core 4 is to be soldered to the bonding wire pad 2 after peeling off the wire skin.

4. The wire through groove 5 is in order to let the terminal wire 3 pass the groove and weld again on the bonding wire pad 2, wears/the bonding wire groove like this has the dynamics of pulling the terminal wire, reduces the atress of sinle silk and line skin department, prevents the line disconnection, if do not wear/the buffering of welding wire groove, will be stressed in the region of sinle silk and line skin when pulling the line, leads to the line to break easily to reduce or avoid reworking or condemned condition.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Avoid welding structure that terminal line was easily torn on PCB, a serial communication port, include:

a PCB circuit board (1); a plurality of bonding wire bonding pads (2) are arranged on the PCB (1);

a terminal wire (3), wherein one end of the terminal wire (3) is removed from the wire skin to expose a terminal wire core (4);

the PCB circuit board (1) is provided with a threading groove (5) for the terminal wire (3) to pass through, and the threading groove is used for reducing the stress of the wire core (4) of the terminal wire and the wire skin of the terminal wire (3).

2. A structure for avoiding easy tearing of a terminal wire soldered on a PCB according to claim 1, characterized in that the slot edge of the threading slot (5) has a rounded or chamfered corner (6).

3. A structure for avoiding easy tearing of a terminal wire soldered on a PCB according to claim 1, further comprising a flexible tape (11), the flexible tape (11) being located on the PCB wiring board (1) and having both ends crossing the terminal wire (3), a face of the flexible tape (11) contacting the terminal wire (3) being an adhesive face.

4. A structure for avoiding easy tearing of a terminal wire soldered to a PCB according to claim 3, wherein the terminal wire (3) between the terminal wire core (4) and the flexible tape (11) forms a terminal wire crimp portion (13).

5. A structure for avoiding easy tearing of a terminal wire welded on a PCB according to claim 4, wherein the PCB circuit board (1) is provided with a relief groove (12), and the relief groove (12) is located at a side close to the terminal wire core (4) and is used for accommodating a terminal wire fold portion (13).

6. A structure for avoiding easy tearing of a terminal wire soldered on a PCB according to claim 1, wherein the threading groove (5) is an annular through groove (7).

7. A structure for avoiding easy tearing of terminal wires soldered on a PCB according to claim 1, characterized in that the threading slot (5) is a plurality of independent through holes (8).

8. A structure for avoiding easy tearing of terminal wires soldered on a PCB according to claim 1, wherein the threading slot (5) is a bar-shaped slot (10) open (9) at the side of the PCB (1).