CN215345231U - Printed circuit board - Google Patents
Printed circuit board Download PDFInfo
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- CN215345231U CN215345231U CN202121823357.1U CN202121823357U CN215345231U CN 215345231 U CN215345231 U CN 215345231U CN 202121823357 U CN202121823357 U CN 202121823357U CN 215345231 U CN215345231 U CN 215345231U
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- printed circuit
- circuit board
- main body
- flexible
- body portion
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Abstract
The present invention provides a printed circuit board, which includes: a crimp provided with a receiving hole configured to receive a crimp-style pin; a main body portion provided with a positioning structure configured to position the printed circuit board; and a flexible connecting portion connecting the crimping portion to the main body portion.
Description
Technical Field
The utility model relates to the field of semiconductor electronic components, in particular to a printed circuit board.
Background
Printed circuit boards are commonly used carriers for electronic components. To electrically connect the printed circuit board to other devices, it is often necessary to mount pins on the printed circuit board. The pins are generally of two types, namely soldered pins and crimped pins. Compared with a welding type contact pin, the crimping type contact pin has the advantages that thermal stress is not generated on a printed circuit board, conductive substances such as welding flux residues and tin beads which influence reliable connection are not generated, the bad phenomena such as insufficient soldering, short circuit and tin penetration which are common in welding are avoided, and cleaning is not needed after crimping. However, the contact between the press-fit pins and the printed circuit board is often affected by other operations on the printed circuit board, for example, the printed circuit board may be deformed to generate stress in the press-fit area when the printed circuit board is fixed, and in addition, the temperature change of the printed circuit board during operation may also cause the press-fit area to generate stress to cause poor contact or even disconnection between the press-fit pins and the printed circuit board. In order to solve this problem, in the prior art, the contact between the press-fit type contact pin and the printed circuit board is protected from other operations by precisely processing the printed circuit board and precisely controlling the stress and deformation of the printed circuit board. However, such precision machining and control often results in printed circuit board manufacture, handling, and high costs.
Therefore, there is a need in the art for a solution that can effectively protect the contact between the press-fit type pin and the printed circuit board from other operations and simplify the manufacturing and processing of the printed circuit board.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problems in the prior art, the present invention provides a printed circuit board, which includes:
a crimp provided with a receiving hole configured to receive a crimp-style pin; and
a main body portion provided with a positioning structure configured to position the printed circuit board, wherein,
the printed circuit board further includes a flexible connecting portion connecting the crimping portion to the main body portion.
According to a possible embodiment of the utility model, the flexible connection consists of a plurality of flexible ribs arranged along the circumference of the crimp and spaced apart from each other.
According to a possible embodiment of the utility model, the flexible connection is arranged along a part of the circumference of the crimp.
According to a possible embodiment of the present invention, the positioning structures are arranged on both sides of a center line of the main body portion, and the flexible connecting portion is provided on a side of the crimping portion close to the center line.
According to a possible embodiment of the utility model, the crimping portion is separated from the body portion along other parts of its circumference.
According to a possible embodiment of the utility model, the thickness of the flexible connection part is smaller than the thickness of the crimping part and the main body part.
According to a possible embodiment of the utility model, the flexible connection is formed by reducing the thickness of the printed circuit board along an annular area, wherein the annular area surrounds the crimping portion and the body portion surrounds the annular area.
According to a possible embodiment of the utility model, the flexible connection is formed by a flexible printed circuit board.
According to a possible embodiment of the utility model, the flexible connection is constituted by a semi-flexible printed circuit board.
According to a possible embodiment of the utility model, the positioning structure is a through hole provided in the body part.
The utility model may be embodied in the form of exemplary embodiments shown in the drawings. It is to be noted, however, that the drawings are designed solely for purposes of illustration and that any variations which come within the teachings of the utility model are intended to be included within the scope of the utility model.
Drawings
The drawings illustrate exemplary embodiments of the utility model. These drawings should not be construed as necessarily limiting the scope of the utility model, wherein:
FIG. 1 is a schematic cross-sectional view taken along the vertical direction of a console equipped with a printed circuit board according to an alternative embodiment of the utility model;
FIG. 2 is a top view of a printed circuit board according to another alternative embodiment of the present invention;
FIG. 3 is a top view of a printed circuit board according to yet another alternative embodiment of the present invention; and
fig. 4 is a schematic cross-sectional view, taken along the vertical direction, of a console equipped with a printed circuit board according to yet another alternative embodiment of the utility model.
Detailed Description
Further features and advantages of the present invention will become apparent from the following description, which proceeds with reference to the accompanying drawings. Exemplary embodiments of the utility model are illustrated in the drawings and the various drawings are not necessarily drawn to scale. This invention may, however, be embodied in many different forms and should not be construed as necessarily limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided only to illustrate the present invention and to convey the spirit and substance of the utility model to those skilled in the art.
In order to achieve electrical connection with the printed circuit board, it is necessary to connect the electrical connection device with the printed circuit board, in other words, to fix the electrical connection device to the printed circuit board so that one end of the electrical connection device is connected with a circuit on the printed circuit board and the other end is connected with other devices by, for example, a wire, thereby achieving electrical connection of the printed circuit board with other devices. Electrical connection devices are typically in the form of pins, which are generally of two types, namely, conventional soldered pins and more recently emerging crimped pins. Compared with a welding type contact pin, the crimping type contact pin has the advantages that thermal stress is not generated on a printed circuit board, conductive substances such as welding flux residues and tin beads which influence reliable connection are not generated, the bad phenomena such as insufficient soldering, short circuit and tin penetration which are common in welding are avoided, and cleaning is not needed after crimping. However, to ensure a reliable electrical connection between the press-fit pins and the printed circuit board, the tolerance in the depth of insertion of the press-fit pins into the printed circuit board typically needs to be controlled to +/-0.2 mm. However, the inventors have found that in other operations after the mounting of the press-fit pins, for example, in the assembly of the printed circuit board to the console by the fasteners, the fasteners may cause stress to the press-fit regions, and the console may cause the printed circuit board to bend and deform and thereby also cause stress to the press-fit regions, which may affect or even destroy the contact between the press-fit pins and the printed circuit board. In addition, temperature changes and vibrations of the printed circuit board during operation also cause it to deform, thereby generating additional stresses in the crimping zone. In order to avoid the stress of the crimping area which influences the contact between the crimping type pin and the printed circuit board due to the assembly of the printed circuit board, the temperature change during the work and the like, the utility model provides an improved printed circuit board which is suitable for installing the crimping type pin and can ensure that the contact with the crimping type pin is not interfered by external factors.
Various embodiments of the printed circuit board according to the utility model are described in detail below with the aid of various figures.
Reference is made to fig. 1 and 2, wherein fig. 1 shows a schematic cross-sectional view, taken along the vertical direction, of a console equipped with a printed circuit board according to an alternative embodiment of the utility model, and fig. 2 shows a top view of a printed circuit board according to another alternative embodiment of the utility model. As shown in fig. 1, the operation table 100 is equipped with two printed circuit boards, i.e., a first printed circuit board 200 on the upper side and a second printed circuit board 300 on the lower side, wherein the first printed circuit board 200 and the second printed circuit board 300 are both fixed to the operation table 100 by a fastener 400, and in the embodiment shown in fig. 1, the fastener 400 is a bolt that is screwed into the operation table 100 through a through hole provided in the first printed circuit board 200 and the second printed circuit board 300 and tightened, thereby fixing the first printed circuit board 200 and the second printed circuit board 300 to the operation table 100 so as to perform operations of etching, applying photoresist, exposing, developing, and the like on the first printed circuit board 200 and the second printed circuit board 300. Although fig. 1 illustrates the first and second printed circuit boards 200 and 300 being fixed to the console 100 using bolts as the fasteners 400, it is understood that the fixing may be accomplished using adhesion, clamping, or other means known in the art without departing from the scope of the present invention. In addition, the first printed circuit board 200 and the second printed circuit board 300 are connected by an electrical connecting device 500, the electrical connecting device 500 is provided with conductive press-fit type pins at both ends, i.e., a first crimp pin 510 disposed at an upper end thereof and a second crimp pin 520 disposed at a lower end thereof, and also has an electrically conductive intermediate section 530 connecting the two crimp pins, wherein the first press-fit pins 510 are pressed into receiving holes (particularly, metallized holes) of the first printed circuit board 200 and are configured to be electrically connected with circuits on the first printed circuit board 200, the second press-fit pins 520 are pressed into receiving holes (particularly, metallized holes) of the second printed circuit board 300 and are configured to be electrically connected with circuits on the second printed circuit board 300, thus, the circuit on the first printed circuit board 200 is electrically connected to the second printed circuit board 300 through the first press-fit pins 510, the middle section 530, and the second press-fit pins 520. In addition, an electrical connector holder 600 is also shown in fig. 1, wherein the electrical connector holder 600 can be fixed to the console 100 and can hold the middle section 530 of the electrical connector 500, whereby the middle section 530 can be prevented from pulling two press-fit pins, in particular the first press-fit pin 510, due to vibrations, self-weight, etc., thereby ensuring that the contact of the press-fit pins with the printed circuit board is not disturbed.
During assembly, first, the second printed circuit board 300 is disposed on the console 100 and fixed with the fastener 400, and then the second press-fit pins 520 are inserted into the receiving holes of the second printed circuit board 300. It should be noted that, since the second press-fit pins 520 are inserted into the second printed circuit board 300 after the second printed circuit board 300 is fixed to the console 100, the fixing of the second printed circuit board 300 does not affect the insertion of the second press-fit pins 520. That is, due to the above-described operation sequence, the depth of insertion of the second press-fit pin 520 into the second printed circuit board 300 can be accurately controlled, and the depth is not affected by the fastener 400 and the operation table 100. However, the first printed circuit board 200 needs to be fixed to the console 100 after the first press-fit pins 510 are inserted due to structural interference or the like. This may cause many risks, for example, as shown in fig. 1, the first printed circuit board 200 is in contact with the console 100 at two contact areas a1, a2, and if the two contact areas a1, a2 are not completely horizontal or are not sufficiently horizontal, the first printed circuit board 200 may be bent or distorted and the distortion may be transmitted to the press-contact portion, thereby generating stress at the position where the first press-fit pin 510 is inserted. In addition, the fastener 400 will press the first printed circuit board 200 in the vertical direction after the installation is completed, causing the first printed circuit board 200 to be deformed in the horizontal direction, and this deformation may also be transmitted to the crimping portion, causing stress to be generated at the position where the first crimp-type pin 510 is inserted. The stress may affect the depth of insertion of the first press-fit pin 510 and even cause contact failure between the first press-fit pin 510 and the first printed circuit board 200. To solve this problem, in the prior art, the two contact areas a1 and a2 of the operating platform 100 and the first printed circuit board 200 are often precisely machined, the force applied by the fastener 400 to the printed circuit board is precisely controlled, and the deformation of the printed circuit board is strictly limited, so as to prevent the contact between the first press-fit pin 510 and the first printed circuit board 200 from being affected. However, the above-mentioned method will certainly lead to the increase of the manufacturing cost of the console 100 and the first printed circuit board 200, and the operation of the first printed circuit board 200 is very complicated and inefficient.
In order to effectively avoid the contact between the first press-fit pin 510 and the first printed circuit board 200 from being affected by the subsequent operation, while reducing the manufacturing cost and simplifying the operation, as shown in fig. 1 and 2, the first printed circuit board 200 includes a press-fit portion 210 and a main body portion 220, wherein the press-fit portion 210 is provided with a receiving hole 211 for receiving the first press-fit pin 510, the main body portion 220 is provided with a positioning structure for positioning the first printed circuit board 200, in the embodiment shown in the drawings, the positioning structure is a through hole 221 provided in the main body portion 220 for a fastener (bolt in the present embodiment) 400 to pass through, and the press-fit portion 210 is connected to the main body portion 220 through a flexible connecting portion 230 (shown as an annular area encircled by two dotted frames in fig. 2). In this configuration, since the press-contact part 210 is used to receive the press-contact pin, the main body part 220 is used to position the first printed circuit board 200, and the flexible connection part 230 is located between the press-contact part 210 and the main body part 220, the deformation or stress of the main body part 220 due to the positioning will be blocked by the flexible connection part 230 and thus limited or unable to be transmitted to the press-contact part 210. In this case, even if the first printed circuit board 200 is positioned after the press-fit pin is inserted, the contact between the press-fit pin and the first printed circuit board 200 is not significantly affected. Therefore, there is no need to precisely control the stress and deformation of the first printed circuit board 200 after the press-fit pins are pressed in. It is worth mentioning that although the embodiment in which the first printed circuit board 200 is fixed to the console 100 by the bolts is described, it is understood that the first printed circuit board 200 may be fixed to the console 100 by clamping, bonding, or the like, and thus the present invention is not limited to the above-described bolt connection manner. Of course, any of the above manners is a positioning structure acting on the main body portion 220 so that the main body portion 220 functions to position the first printed circuit board 200.
In an alternative embodiment of the present invention, as shown in fig. 1, the thickness of the flexible connection part 230 is smaller than the thickness of the crimping part 210 and the main body part 220. With this configuration, the flexible connection portion 230 can more effectively prevent the deformation and stress from being transmitted from the main body portion 220 to the press-bonding portion 210, thereby more effectively protecting the contact between the press-bonding type pin and the printed circuit board from being affected. In particular, the flexible connection portion 230 may be formed by reducing the thickness of the first printed circuit board 200 along an annular region defined by two dashed boxes in fig. 2, and thereby defining the crimping portion 210 located inside (i.e., surrounded by) the annular region and the body portion 220 located outside (i.e., surrounding) the annular region.
In an alternative embodiment of the present invention, as shown in fig. 2, the flexible connection 230 is composed of a plurality of flexible ribs 231 arranged along the circumference of the crimp 210 and spaced apart from each other. In this configuration, the crimp portion 210 is separated from the main body portion 220 between the respective flexible ribs 231, so that the transmission of deformation, stress from the main body portion 220 to the crimp portion 210 can be completely avoided, and since the respective flexible ribs 231 are separated from each other, the flexibility of the flexible ribs 231 is further increased, so that the transmission of deformation, stress from the main body portion 220 to the crimp portion 210 at the respective flexible ribs 231 can be more effectively prevented.
In an alternative embodiment of the present invention, as shown in fig. 3, which shows a top view of a printed circuit board according to yet another alternative embodiment of the present invention, the flexible connection part 230 is arranged along a part of the circumference of the crimp part 210 such that the crimp part 210 is connected with the main body part 220 through the flexible connection part 230 along the part of the circumference thereof and is separated from the main body part 220 along the other part of the circumference thereof. In this configuration, the crimp portion 210 is connected to the main body portion 220 by the flexible connection portion 230 only along a part of the periphery thereof, and is separated from the main body portion 220 along the other part of the periphery thereof, so that the connection area between the crimp portion 210 and the main body portion 220 is reduced, whereby deformation, stress, can be more effectively prevented from being transmitted from the main body portion 220 to the crimp portion 210.
Further alternatively, as shown in fig. 3, the positioning structures (the through holes 221 in the embodiment shown in the figure) of the main body part 220 are disposed at both sides of the center line XX 'thereof, and the flexible connecting part 230 is disposed at a side of the crimping part 210 close to the center line XX'. In this configuration, the flexible connection portion 230 may be further away from the positioning structure causing deformation and stress of the first printed circuit board 200, thereby more effectively preventing the deformation and stress from being transferred from the positioning structure of the main body portion 220 to the crimping portion 210.
In an alternative embodiment of the utility model, as shown in fig. 4, which shows a schematic cross-section, taken along the vertical direction, of a console equipped with a printed circuit board according to yet another alternative embodiment of the utility model, the flexible connection portion 230 is constituted by a flexible printed circuit board (FPC) made of a flexible base material, known in the art, in particular by a semi-flexible printed circuit board (SFPC) made of a semi-flexible base material, also known in the art. With this configuration, it is possible to prevent deformation and stress from being transmitted to the crimping portion 210 by the positioning structure of the main body portion 220 by the flexible printed circuit board or the semi-flexible printed circuit board as the flexible connection portion 230, and in the case of the semi-flexible printed circuit board, it is also possible to further provide appropriate support and hold to the circuit on the flexible connection portion 230 and restrict the movement amplitude of the crimping portion 210, thereby preventing the circuit from falling off from the flexible connection portion 230 and preventing the contact of the crimping pin with the printed circuit board from being damaged due to the large movement amplitude of the crimping portion 210.
Alternative but non-limiting embodiments of the printed circuit board according to the utility model are described in detail above with the aid of the figures. Modifications and additions to the techniques and structures, as well as re-combinations of features in various embodiments, which do not depart from the spirit and substance of the disclosure, will be readily apparent to those of ordinary skill in the art as they are deemed to be within the scope of the utility model. Accordingly, such modifications and additions that can be envisaged within the teachings of the present invention are to be considered as part of the present invention. The scope of the present invention includes equivalents known at the time of filing and equivalents not yet foreseen.
Claims (10)
1. A printed circuit board, comprising:
a crimp provided with a receiving hole configured to receive a crimp-style pin; and
a main body portion provided with a positioning structure configured to position the printed circuit board,
the printed circuit board further includes a flexible connecting portion connecting the crimping portion to the main body portion.
2. The printed circuit board of claim 1, wherein the flexible connection portion is comprised of a plurality of flexible ribs arranged along a perimeter of the crimp portion and spaced apart from one another.
3. A printed circuit board according to claim 1 or 2, wherein the flexible connection portion is arranged along a part of a circumference of the crimping portion.
4. A printed circuit board according to claim 3, wherein the positioning structures are arranged on both sides of a center line of the main body portion, and the flexible connecting portion is provided on a side of the crimping portion close to the center line.
5. A printed circuit board according to claim 3, wherein the crimping portion is separated from the main body portion along other portions of its periphery.
6. The printed circuit board according to claim 1 or 2, wherein a thickness of the flexible connecting portion is smaller than thicknesses of the crimping portion and the main body portion.
7. A printed circuit board according to claim 1 or 2, wherein the flexible connection portion is formed by reducing the thickness of the printed circuit board along an annular region, wherein the annular region surrounds the crimping portion and the main body portion surrounds the annular region.
8. A printed circuit board according to claim 1 or 2, wherein the flexible connection portion is constituted by a flexible printed circuit board.
9. A printed circuit board according to claim 1 or 2, characterized in that the flexible connection is constituted by a semi-flexible printed circuit board.
10. A printed circuit board according to claim 1 or 2, wherein the positioning structure is a through hole provided in the main body portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121823357.1U CN215345231U (en) | 2021-08-05 | 2021-08-05 | Printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121823357.1U CN215345231U (en) | 2021-08-05 | 2021-08-05 | Printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215345231U true CN215345231U (en) | 2021-12-28 |
Family
ID=79575970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121823357.1U Active CN215345231U (en) | 2021-08-05 | 2021-08-05 | Printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215345231U (en) |
-
2021
- 2021-08-05 CN CN202121823357.1U patent/CN215345231U/en active Active
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