PCB and current-carrying terminal used for PCB

Abstract

The utility model relates to a PCB and a current-carrying terminal used for the PCB. The current-carrying terminal includes: a plate-shaped main body; the plurality of pins respectively extend out from the plate-shaped main body at an angle; a bonding portion disposed on the plate-shaped body and having a bonding structure adapted to be bonded to the PCB; and the column is arranged on the plate-shaped main body, and the column and the plurality of pins extend out from the same side of the plate-shaped main body.

Description

Technical Field

[0001] The utility model relates to an electrical device, in particular to a PCB and a current-carrying terminal used for the PCB. Background Art

[0002] A printed circuit board (PCB), also known as a printed circuit board or printed wiring board, is a support carrier for electronic components, in which metal conductors are arranged as lines connecting electronic components. Traditional PCB current-carrying terminals are installed on the PCB substrate through a welding process, which is very inefficient and costly. The current-carrying terminals themselves are made of copper material, which is relatively expensive, and in order to cope with high-temperature and high-pressure welding, the current-carrying terminals need to be surface treated, such as nickel and tin electroplating. This surface treatment process is relatively complicated, and it is also easy for the tin layer on the outer surface to melt during the welding process. Poor tin coating may also occur during welding. In addition, the mechanical properties of the welded current-carrying terminals are poor. If the tightening force for installing the electronic components is large, the surface plating of the current-carrying terminals may crack.

[0003] Therefore, there is a certain demand in the industry for improving the connection method between the PCB substrate and the current-carrying terminals. Utility Model Content

[0004] The utility model aims to provide a current-carrying terminal applied to a PCB, which can at least solve some of the above-mentioned technical problems.

[0005] The utility model also aims to provide a PCB arranged with the above improved current-carrying terminal.

[0006] According to one aspect of the utility model, a current-carrying terminal for a PCB is provided, wherein the current-carrying terminal comprises: a plate-like body; a plurality of pins extending from the plate-like body at angles; a joining portion arranged on the plate-like body and having a joining structure suitable for joining to the PCB; a column arranged on the plate-like body, wherein the column and the plurality of pins extend from the same side of the plate-like body.

[0007] The current-carrying terminal provided in this solution can be fixed on the PCB substrate without the need for a welding process, or even without auxiliary installation tools such as wrenches and screwdrivers. The installation process is time-saving and labor-saving, highly efficient, and very low in cost. In addition, since the current-carrying terminal does not need to withstand a high-temperature and high-pressure welding process, the corresponding surface treatment steps are omitted, and the terminal can be made of cheaper materials, such as galvanized sheet, further reducing costs. After being installed on the PCB, the current-carrying terminal of this solution can have higher mechanical properties and can withstand higher torque and thrust. In the process of joining electronic devices such as fuses or cables to the PCB, or joining to the PCB by connecting to the current-carrying terminal, the current-carrying terminal of this solution has significant advantages.

[0008] In some embodiments, the column is plugged into the plate-like body in an interference fit manner. The column extends out of the plate-like body and is used to sleeve the connection terminal of the electronic device, has high mechanical properties, and can withstand high torque and thrust.

[0009] In some embodiments, the plurality of pins are extended from opposite ends of the plate-shaped body in an integrally bent manner, thereby providing a simple pin forming method.

[0010] In some embodiments, two spaced-apart pins are disposed at each of the opposite ends of the plate-like body.

[0011] In some embodiments, the engagement structure is configured as an engagement hole through which a connector connected to the PCB passes.

[0012] In some embodiments, the engaging portion is configured as protrusions extending integrally from opposite ends of the plate-like body, and the engaging structure is formed on the protrusions.

[0013] In some embodiments, the post extends beyond the plurality of pins on the same side of the plate-like body.

[0014] According to another aspect of the utility model, a PCB is provided, comprising: a substrate having a first surface and a second surface opposite to each other; a current-carrying terminal arranged on the substrate; wherein the current-carrying terminal is the aforementioned current-carrying terminal, wherein the substrate has a plurality of first openings for the plurality of pins of the current-carrying terminal to pass through, a second opening for the column to pass through, and a mating connection structure aligned with the joining structure at a position of the connection terminal of the electronic device to be joined, wherein the plate-like body of the current-carrying terminal is affixed to the first surface of the substrate, and the plurality of pins and the column extend from the second surface through the substrate.

[0015] In some embodiments, a copper foil area is formed on the second surface of the substrate at a position corresponding to the current-carrying terminal.

[0016] In some embodiments, the mating connection structure of the base plate is configured as a third hole for accommodating a connector penetrating through the engagement structure of the engagement portion.

[0017] Some of the other features and advantages of the present invention will be apparent to those skilled in the art after reading this application, and the other parts will be described in the following specific embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, wherein:

[0019] Figure 1is a schematic diagram of a current-carrying terminal according to an embodiment of the utility model;

[0020] Figure 2 is a partial schematic diagram of a substrate of a PCB according to an embodiment of the utility model;

[0021] Figure 3 and Figure 4 is a partial schematic diagram of a PCB according to an embodiment of the utility model viewed from two opposite surfaces, wherein current-carrying terminals have been mounted to a substrate;

[0022] Figure 5 is a schematic diagram of installing a fuse on a PCB according to an embodiment of the utility model;

[0023] Description of reference numerals:

[0024] 1-current-carrying terminal; 11-plate-shaped body; 111-first end; 112-second end; 12-pin; 1

[0025] 3-joining portion; 14-joining hole; 15-column; 2-PCB; 21-substrate; 211-first surface;

[0026] 212- second surface; 22- first orifice; 23- second orifice; 24- third orifice; 25- copper

[0027] Foil area; 3-fuse; 31-connection terminal; 4-connector DETAILED DESCRIPTION

[0028] Now, with reference to the accompanying drawings, a schematic scheme of the PCB and the current-carrying terminals used for the PCB disclosed by the utility model is described in detail. Although the accompanying drawings are provided to present some embodiments of the utility model, the accompanying drawings do not have to be drawn according to the dimensions of the specific embodiments, and certain features may be enlarged, removed or partially cut to better illustrate and explain the disclosure of the utility model. Some components in the accompanying drawings can be adjusted in position according to actual needs without affecting the technical effect. The phrase "in the accompanying drawings" or similar terms appearing in the specification do not necessarily refer to all drawings or examples.

[0029] Certain directional terms used to describe the drawings below, such as "inside", "outside", "above", "below" and other directional terms, will be understood to have their normal meanings and refer to those directions involved when the drawings are normally viewed. Unless otherwise specified, the directional terms described in this specification are basically in accordance with the conventional directions understood by those skilled in the art.

[0030] The terms "first", "first", "second", "second" and the like used in the present invention do not indicate any order, quantity or importance, but are used to distinguish one component from other components.

[0031] The utility model aims to provide a current-carrying terminal for a PCB. One of the advantages of the current-carrying terminal is that it can be directly plugged into the substrate of the PCB without the need for a welding process or even additional auxiliary installation tools, such as a wrench or a screwdriver, thereby improving the installation efficiency. Since the welding process is omitted, the current-carrying terminal can be made of cheaper materials and does not need to undergo a high temperature and high pressure resistant surface treatment, thereby effectively reducing the cost. In addition, the advantage of the current-carrying terminal is that it has good mechanical properties. When fixing the electronic device to the PCB, the current-carrying terminal can withstand higher torque and thrust, and will not easily deform or have surface cracks.

[0032] Figure 1 An example of a current-carrying terminal according to the utility model is shown, and the current-carrying terminal is identified as reference numeral 1. As shown in the figure, the plate-like body 11 of the current-carrying terminal 1 has two ends opposite to each other, namely a first end 111 and a second end 112, and the plate-like body 11 extends between the first end 111 and the second end 112. The column 15 is installed on the plate-like body 11 between the first end 111 and the second end 112. One way to install the column 15 is to insert it into the plate-like body 11 by punching, and to have an interference fit with the plate-like body 11. Another way is to form an opening on the plate-like body 11, which can be a through hole that penetrates the plate-like body 11, or a blind hole or a groove that does not penetrate the plate-like body 11, and the column 15 is inserted into the opening on the plate-like body 11 in an interference fit manner. Another way is to form an opening on the plate-like body 11, which can be a through hole that penetrates the plate-like body 11, or a blind hole or a groove that does not penetrate the plate-like body 11, and a thread is formed on the inner wall of the opening, and the outer wall of the column 15 also forms an adaptive thread, so that the column 15 can be screwed and inserted into the opening of the plate-like body 11.

[0033] The column 15 can extend vertically from the plate-like body 11. Also extending from the plate-like body 11 at an angle in the same direction as the column 15 are pins 12 formed at the first end 111 and the second end 112 of the plate-like body 11. In the illustrated embodiment, the plate-like body 11 has four pins 12, wherein the first end 111 and the second end 112 are each provided with two pins 12, and the two pins 12 at each end are spaced apart from each other. It will be understood by those skilled in the art that the number and position of the pins 12 may not be limited to those shown in the figure, but may be adjusted according to actual needs, such as the layout of the PCB. For example, in an embodiment not shown, the plate-like body 11 has a pin at each of the first end 111 and the second end 112, and the pin is arranged in the center of the corresponding end. Alternatively, in another embodiment not shown, the plate-like body 11 has a pin at each of the first end 111 and the second end 112, and the pins at these two ends are arranged along the diagonal of the plate-like body 11. Alternatively, the number of pins at each end may also be increased to three or four, which all fall within the scope of protection of the present utility model.

[0034] The pin 12 and the plate-like body 11 may be an integrally formed unit, for example, the pin 12 is formed by cutting an extension arm at the first end 111 and the second end 112 of the plate-like body 11 and bending the extension arm. Alternatively, the pin and the plate-like body may be formed independently, and the pin is connected to the plate-like body at a desired angle, such as 90°. In other embodiments, the plate-like body and the pin connected thereto may also be prepared by one or two molding of a mold.

[0035] Still for reference Figure 1 The current-carrying terminal 1 is also formed with a joint portion 13 at the first end 111 and the second end 112 of the plate-like body 11, respectively, and a joint hole 14 is formed at the joint portion 13, which is used to be connected to the PCB through a connector 4 such as a rivet, a screw or a pin. A simple and easy connector 4 is a plastic rivet that can be operated by hand. Here, the joint portion 13 is constructed as a protrusion extending from the first end 111 or the second end 112 of the plate-like body 11, the protrusion is located between the two pins 12 at the corresponding end, and the joint hole 14 is formed on the protrusion. The protrusion is preferably an integral part formed integrally with the plate-like body 11, for example, formed by cutting the end of the plate-like body 11. Although the figure shows that the joint 13 is clearly distinguished from the plate-like body 11, those skilled in the art will understand that the joint may not have a significant boundary with the plate-like body, or in other words, the plate-like body 11 assumes the function of the joint by the section located at the first end 111 and the second end 112 and formed with the joint hole 14, but this section is not significantly different from the other sections of the plate-like body 11 in terms of shape and size.

[0036] In addition, when the pins 12 are formed at the first end 111 and the second end 112 of the plate-like body 11, the joint 13 may also be formed at other ends of the plate-like body 11, for example, between the first end 111 and the second end 112. Thus, the pins and the joint are arranged at two adjacent ends along the circumference of the plate-like body 11.

[0037] As required, the engaging hole 14 may also be replaced with other suitable engaging structures to allow the plate-like body 11 to be fixed to the PCB via the engaging hole 14. For example, in an embodiment not shown, a boss extending in the same direction as the pin 12 and the column 15 is formed on the engaging portion 13 as an engaging structure, and the boss can be plugged into a corresponding groove or hole of the substrate of the PCB. In addition, the substrate of the PCB may be formed with a boss, and the engaging portion 13 of the current-carrying terminal 1 may be formed with a matching groove or hole.

[0038] The above configuration of the current-carrying terminal 1 enables it to be fixed to the PCB in a simple manner without the need for processing techniques such as welding. In this article, "welding" refers to the process and technology of joining metals or other thermoplastics by heating or pressurizing. Therefore, the current-carrying terminal 1 can be made of relatively cheap materials, such as galvanized sheet, and the surface does not need additional high temperature and high pressure resistance treatment.

[0039] To adapt to the above-mentioned current-carrying terminal 1, the PCB is also processed accordingly on its substrate. Figure 2 An example of such a PCB is shown. As shown in the figure, the PCB is identified as reference numeral 2, and the substrate 21 of the PCB is configured with a joint area of ​​the current-carrying terminal at a location for mounting the corresponding electronic device. In the joint area, the substrate 21 is correspondingly formed with a plurality of first openings 22 corresponding to the number and position of the pins 12 of the current-carrying terminal 1. Each first opening 22 is used to receive the corresponding pin 12. When the electronic device is mounted on the PCB, the pin 12 inserted into the first opening 22 of the PCB can also have a stop effect to prevent the current-carrying terminal 1 from being accidentally moved due to force. The figure shows a through first opening 22 that passes through the substrate 21, but in other embodiments, the first opening 22 can also be a blind hole or a groove that does not pass through the substrate 21.

[0040] In the middle of these first openings 22, corresponding to the pillars 15 of the current-carrying terminals 1, a second opening 23 with a larger diameter is also formed on the substrate 21. The diameter of the second opening 23 is equal to or slightly larger than the diameter of the pillars 15, so as to facilitate the passage of the pillars 15. When the electronic device is mounted on the PCB, the pillars can play a role in positioning the connection terminals of the electronic device and can withstand higher torque and thrust.

[0041] In addition, the substrate 21 is also formed with a third aperture 24 adapted to the engagement hole 14 of the current-carrying terminal 1. The connector 4 can be passed through the aligned third aperture 24 and the engagement hole 14, thereby fixing the current-carrying terminal 1 and the substrate 21 together. The connector 4 can be selected from elements suitable for barehand work, such as plastic rivets, thereby eliminating additional auxiliary tools, such as wrenches or screwdrivers. The figure shows a through third aperture 24 that penetrates the substrate 21, but in other embodiments, the third aperture 24 can also be a blind hole or a groove that does not penetrate the substrate 21.

[0042] Figure 3 and Figure 4 The current-carrying terminal 1 and the substrate 21 assembled together are schematically shown from two opposite surfaces of the substrate 21. As shown in the figure, one of the two opposite surfaces of the substrate 21 is identified as the first surface 211, and the other surface is identified as the second surface 212. When the current-carrying terminal 1 is installed on the substrate 21, the plate-shaped body 11 is abutted against the first surface 211, and the pin 12 is inserted into the corresponding first hole 22 from the first surface 211, so that the pin 12 passes through the first hole 22 and extends from the second surface 212. Of course, in the case where the first hole 22 is a blind hole or a groove, the pin 12 will not extend from the second surface 212 after being inserted from the first surface 211 into the corresponding first hole 22. In the process of inserting the pin 12, the column 15 naturally passes through the second hole 23 from the first surface 211 and extends from the second surface 212. The connector 4 can also be inserted into the engagement hole of the current-carrying terminal 1 and extend from the second surface 212 after passing through the corresponding third hole 24. At this point, the current-carrying terminal 1 is mounted to the substrate 21 .

[0043] Afterwards, the electronic device can be mounted to the current-carrying terminal 1, thereby connecting it to the PCB. Figure 5 As shown, the electronic device is shown as a fuse 3, or a fuse or a fuse. The fuse 3 is provided with connecting terminals 31 at opposite ends, wherein each connecting terminal 31 has an opening for the column 15 of the current-carrying terminal 1 to pass through. After the fuse 3 is brought close to the second surface 212 of the substrate 21 and sleeved onto the column 15, the connecting terminals 31 of the fuse 3 are almost aligned with the plate-like body 11 on opposite sides of the substrate 21. Then, the fuse 3 can be fixed to the current-carrying terminal 1. In addition to the fuse 3, the current-carrying terminal 1 can also be used to fix other electronic devices to the PCB, such as cables.

[0044] A copper foil area 25 may also be formed on the second surface 212 of the substrate 21 at a position corresponding to the plate-like body 11 . When the electronic device is mounted on the PCB, the connection terminals of the electronic device are just against the copper foil area 25 .

[0045] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0046] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations made by any technician in the field without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A current-carrying terminal for a PCB, characterized in that: The current-carrying terminal comprises: Plate-shaped body (11); A plurality of pins (12) extending from the plate-shaped body (11) at respective angles; A joining portion (13), arranged on the plate-shaped body (11) and having a joining structure suitable for joining to the PCB; A column (15) is arranged on the plate-shaped body (11), wherein the column (15) and the plurality of pins (12) extend from the same side of the plate-shaped body (11).

2. The current-carrying terminal according to claim 1, characterized in that: The column (15) is inserted into the plate-like body (11) in an interference fit manner.

3. The current-carrying terminal according to claim 1, characterized in that: The plurality of pins (12) extend out from opposite ends of the plate-shaped body (11) in an integrally bent manner.

4. The current-carrying terminal according to claim 1 or 3, characterized in that: Two spaced-apart pins (12) are arranged at each of the two opposite ends of the plate-like body (11).

5. The current-carrying terminal according to claim 1, characterized in that: The joining structure is configured as a joining hole (14) through which a connecting member (4) connected to the PCB passes.

6. The current-carrying terminal according to claim 1 or 5, characterized in that: The engaging portion (13) is constructed as a protrusion that extends integrally from opposite ends of the plate-shaped body (11), and the engaging structure is formed on the protrusion.

7. The current-carrying terminal according to claim 1, characterized in that: On the same side of the plate-like body (11), the column (15) extends beyond the plurality of pins (12).

8. A PCB comprising: A substrate (21) having a first surface (211) and a second surface (212) opposite to each other; A current-carrying terminal (1) arranged on the substrate (21); It is characterized in that the current-carrying terminal (1) is a current-carrying terminal as described in any one of claims 1 to 7, wherein the substrate (21) has a plurality of first holes (22) for the plurality of pins (12) of the current-carrying terminal (1) to pass through, a second hole (23) for the column (15) to pass through, and a mating connection structure aligned with the joining structure at the position of the connecting terminal (31) of the electronic device (3) to be joined, wherein the plate-like body (11) of the current-carrying terminal (1) is affixed to the first surface (211) of the substrate (21), and the plurality of pins (12) and the column (15) pass through the substrate (21) and extend from the second surface (212).

9. The PCB according to claim 8, characterized in that: A copper foil area (25) is formed on the second surface (212) of the substrate (21) at a position corresponding to the current-carrying terminal (1).

10. The PCB according to claim 8 or 9, characterized in that: The matching connection structure of the base plate (21) is configured as a third opening (24) for accommodating a connection member (4) penetrating through the connection structure of the connection portion (13).

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