Flexible circuit board and plugging structure

Abstract

The utility model discloses a flexible circuit board and a plug-in structure, and relates to the field of flexible circuit boards, the flexible circuit board comprises a flexible section and a plug-in part, the two sides of the plug-in part are provided with extension parts, the extension parts are connected with limiting parts, the limiting parts extend along the plug-in direction of the plug-in part, and the plug-in structure comprises the flexible circuit board and a connector. The limiting part is attached to the side surface of the connector; according to the flexible circuit board and the plug-in structure provided by the utility model, the inner edge of the limiting part is aligned with the outer side of the connector, so that the plug-in part is prevented from inclining during plug-in, the flexible circuit board is effectively protected, the arrangement of the limiting part can prevent the plug-in part from being scraped and collided with the non-socket part of the connector, the abrasion is reduced, the service life of the flexible circuit board is prolonged, and the cost is reduced. Moreover, the structure is simple, the manufacturing is convenient, the processing cost is low, the original connector structure does not need to be changed, the adaptability is high, whether the plugging part is plugged in place or not can be conveniently and directly observed through the extension part, and it is ensured that the plugging part can be electrically communicated with the connector.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible circuit boards, in particular to a flexible circuit board and a plug-in structure. Background Art

[0002] FPC is a flexible printed circuit board. In the production process of electronic products, some functional tests require the use of transfer FPC. The transfer FPC is generally plug-in. The plug-in part of the transfer FPC is inserted into the connector. The structure is as follows Figure 1 , Figure 2 As shown; the transfer FPC is to be used repeatedly and needs to be plugged and unplugged many times. Since the gold finger of the FPC is manually assembled into the connector, there is a possibility that the FPC is tilted when inserted into the connector, which is prone to short-circuiting the lines of the two adjacent FPC gold fingers, causing the product to burn out; in addition, if the plug interface of the FPC and the connector is not aligned during plugging, the edge of the FPC will scrape against the non-plug position of the connector, which is easy to wear the edge of the FPC and the gold finger, causing the gold finger to tilt, and the FPC cannot be used, causing waste and increasing costs. Patent application number 201910579830 .7 discloses a plug structure, which includes a connector and a plug, wherein: the connector has a socket, the socket has a first terminal and a first guide rail structure, the first terminal is configured to be electrically connected to a first flexible circuit board; the plug has a second terminal and a second guide rail structure, the second terminal is configured to be electrically connected to a second flexible circuit board, the second guide rail structure is configured to cooperate with the first guide rail structure during the process of inserting the plug into the socket of the connector, and after the plug is inserted into the socket of the connector, the first terminal is electrically connected to the second terminal; although this scheme utilizes the cooperation between the first guide rail structure and the second guide rail structure to enable the plug to be inserted into the socket of the connector more smoothly to achieve conduction, avoiding damage to the flexible circuit board by a clamping tool (such as tweezers); however, the addition of the first guide rail structure and the second guide rail structure in the plug structure requires a special plug to adapt to a special connector, which has weak adaptability, and the addition of the guide rail structure makes the process more complicated, increasing the processing cost. Therefore, the utility model discloses a flexible circuit board and a plug structure to solve the above problems. Utility Model Content

[0003] Based on this, it is necessary to provide a flexible circuit board to address the above-mentioned technical problems, in which the limiting parts are connected to the limiting parts through the extension parts on both sides of the plug-in part. When plugging in, the inner edge of the limiting part is aligned with the outer side of the connector to ensure that the plug-in part is inserted into the connector in a straight line, avoiding the plug-in part from tilting during plugging, preventing the flexible circuit board from short circuiting, and effectively protecting the flexible circuit board. At the same time, the setting of the limiting part can also avoid the plug-in part from scratching the non-plug part of the connector, reduce wear, increase the service life of the flexible circuit board, and reduce the detection cost. The extension part, the limiting part and the plug-in part can be manufactured as one piece, with a simple structure, convenient manufacturing, low processing cost, no need to change the original connector structure, and strong adaptability.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A flexible circuit board comprises a flexible section and a plug-in portion, wherein extension portions are arranged on both sides of the plug-in portion, the extension portions are connected to limiting portions, and the limiting portions extend along the plug-in direction of the plug-in portion.

[0006] As a preferred implementation of the flexible circuit board provided by the utility model, the length of the limiting portion is greater than the length of the plug-in portion.

[0007] As a preferred embodiment of the flexible circuit board provided by the utility model, a gold finger is provided on one surface of the plug-in portion, a first reinforcement plate is provided on the other surface of the plug-in portion, and a second reinforcement plate is provided on the limiting portion.

[0008] As a preferred implementation of the flexible circuit board provided by the utility model, the extension portion is provided with a third reinforcement plate.

[0009] As a preferred embodiment of the flexible circuit board provided by the utility model, the plug-in portion, the extension portion and the limiting portion constitute an E-type structure, and the first reinforcement plate, the second reinforcement plate and the third reinforcement plate are an integral structure and match the E-type structure.

[0010] As a preferred implementation manner of the flexible circuit board provided by the utility model, the connection between the flexible section and the extension portion is an arc angle.

[0011] As a preferred implementation of the flexible circuit board provided by the utility model, the inner side of the connection between the limiting portion and the extending portion is a right angle, and the outer side of the connection between the limiting portion and the extending portion is an arc angle.

[0012] As a preferred implementation of the flexible circuit board provided by the utility model, a scratch-resistant layer is provided on the inner side of the limiting portion.

[0013] A plug-in structure comprises the above-mentioned flexible circuit board and a connector, wherein the connector is provided with a plug hole matching the plug-in part, and the limiting part is fitted with the side surface of the connector.

[0014] As a preferred implementation of the plug-in structure provided by the utility model, after the plug-in portion is plugged into the plug hole on the connector, the extension portion fits with the connector.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The flexible circuit board provided by the utility model is connected to the limiting part through the extension part on both sides of the plug-in part. When plugging in, the inner edge of the limiting part is aligned with the outer side of the connector, ensuring that the plug-in part is inserted into the connector in a straight line, avoiding the plug-in part from tilting during plugging, preventing the flexible circuit board from short-circuiting, and effectively protecting the flexible circuit board. At the same time, the setting of the limiting part can also avoid the plug-in part from scratching the non-plug part of the connector, reducing wear and tear, increasing the service life of the flexible circuit board, and reducing the detection cost. The extension part, the limiting part and the plug-in part can be made in one piece, with a simple structure, convenient manufacturing, low processing cost, no need to change the original connector structure, and strong adaptability.

[0017] 2. The plug-in structure provided by the utility model has the limiting parts on both sides of the plug-in part aligned with the corresponding sides of the connector during plug-in, so as to achieve the purpose of limiting the plug-in part, so that the plug-in part can be inserted into the plug hole of the connector in a straight line and smoothly, avoiding the plug-in part and the connector from scratching and protecting the plug-in part. At the same time, the extension part can be used to conveniently and directly observe whether the plug-in part is plugged in place, so as to ensure that the plug-in part and the connector can be electrically connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The three-view drawing of the existing flexible circuit board;

[0020] Figure 2 A schematic diagram of the connection between an existing flexible circuit board and a connector;

[0021] Figure 3 A front schematic diagram of the flexible circuit board provided by the utility model;

[0022] Figure 4 A side schematic diagram of the flexible circuit board provided by the utility model;

[0023] Figure 5 A schematic diagram of the back side of the flexible circuit board provided by the utility model;

[0024] Figure 6 A schematic diagram of the structure of the flexible circuit board provided by the utility model when it starts to be inserted into the connector;

[0025] Figure 7 This is a schematic diagram of the structure after the flexible circuit board provided by the utility model is fully inserted into the connector.

[0026] The markings in the figure are as follows:

[0027] 1. Flexible section; 2. Plug-in part; 3. Extension part; 4. Limiting part; 5. Gold finger; 6. First reinforcement plate; 7. Second reinforcement plate; 8. Third reinforcement plate; 9. Scratch-resistant layer; 10. Connector. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0029] As described in the background technology, since the gold fingers of the FPC are manually assembled when plugged into the connector, there is a possibility that the FPC is tilted when inserted into the connector, which may easily cause a short circuit between the two adjacent FPC gold fingers, causing the product to burn out. In addition, if the plug-in interfaces of the FPC and the connector are not aligned during plug-in, the edge of the FPC will scrape against the non-plug position of the connector, which may easily wear the edge of the FPC and the gold fingers, causing the gold fingers to curl up, and the FPC cannot be used, resulting in waste and increased costs. The existing FPC plug-in structure adds a first guide rail structure and a second guide rail structure, requiring a special plug to adapt to a special connector, which has weak adaptability, and adds a guide rail structure, which makes the process more complicated and increases the processing cost.

[0030] In order to solve this technical problem, the utility model provides a flexible circuit board, which is applied to the field of flexible circuit boards.

[0031] Specifically, please refer to Figure 3-5 The flexible circuit board specifically includes a flexible section 1 and a plug-in portion 2. Extension portions 3 are provided on both sides of the plug-in portion 2. The extension portions 3 are connected to a limiting portion 4. The limiting portion 4 extends along the plug-in direction of the plug-in portion 2.

[0032] The flexible circuit board provided by the utility model is connected to the limiting part 4 on both sides of the plug-in part 2 through the extension part 3. When plugging in, the inner edge of the limiting part 4 is aligned with the outer side of the connector 10, ensuring that the plug-in part 2 is inserted into the connector 10 in a straight line, avoiding the plug-in part 2 from tilting during plugging, preventing the flexible circuit board from short-circuiting, and effectively protecting the flexible circuit board. At the same time, the setting of the limiting part 4 can also avoid the plug-in part 2 from scratching the non-plug part of the connector 10, reducing wear and tear, increasing the service life of the flexible circuit board, and reducing the detection cost. The extension part 3 and the limiting part 4 can be made integrally with the plug-in part 2, with a simple structure, convenient manufacturing, low processing cost, no need to change the original connector 10 structure, and strong adaptability.

[0033] In order to solve the problems existing in the current technology, the utility model provides a plug-in structure, which includes the above-mentioned flexible circuit board and a connector 10, wherein the connector 10 is provided with a socket matching the plug-in part 2, and the limiting part 4 is fitted with the side of the connector 10.

[0034] The plug-in structure provided by the utility model has the limiting parts 4 on both sides of the plug-in part 2 aligned with the corresponding sides of the connector 10 during plug-in, so as to limit the plug-in part 2, so that the plug-in part 2 can be smoothly inserted into the plug hole of the connector 10 in a straight line, avoiding the plug-in part 2 and the connector 10 from scratching and protecting the plug-in part 2. At the same time, the extension part 3 can be used to conveniently and directly observe whether the plug-in part 2 is plugged in place, so as to ensure that the plug-in part 2 and the connector 10 can be electrically connected.

[0035] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] Example 1

[0039] Please refer to Figure 3-7 , provides a flexible circuit board, which includes a flexible section 1 and a plug-in portion 2, the flexible section 1 is connected to the main body of the flexible circuit board as a whole, the plug-in portion 2 is arranged at the end of the flexible section 1, and extension portions 3 are arranged on both sides of the plug-in portion 2, the extension portion 3 is connected to a limiting portion 4, and the limiting portion 4 extends along the plug-in direction of the plug-in portion 2.

[0040] Specifically, the plug-in portion 2, the extension portion 3 and the limiting portion 4 are an integrated structure and constitute an E-type structure. The opening of the E-type structure faces the plug-in direction of the plug-in portion 2. They are all substrate layers of conventional flexible circuit boards, and a gold finger 5 is provided on one surface of the plug-in portion 2, and a first reinforcement plate 6 is provided on the other surface. At the same time, a second reinforcement plate 7 is provided on the limiting portion 4. The second reinforcement plate 7 and the first reinforcement plate 6 are on the same side. The second reinforcement plate 7 is used to enhance the strength of the limiting portion 4, so that the limiting portion 4 will not be deformed during the plug-in process.

[0041] Furthermore, in order to improve the strength, a third reinforcing plate 8 is also provided on the extension portion 3, and the first reinforcing plate 6, the second reinforcing plate 7 and the third reinforcing plate 8 are an integrated structure, and the shape thereof is also an E-shaped structure, and can match the E-shaped structure composed of the above-mentioned plug-in portion 2, the extension portion 3 and the limiting portion 4, that is, the size is consistent. The reinforcing plate of the integral structure can ensure the stability during plug-in, ensure that the limiting portion 4 can play a limiting role, and smoothly insert the plug-in portion 2 into the connector 10.

[0042] A circular arc angle is set at the connection between the flexible section 1 and the extension part 3 to improve the strength of the flexible section 1 and the extension part 3 to avoid frequent bending and tearing, which will cause damage and affect the use. At the same time, an arc angle is also set on the outer side of the connection between the limiting part 4 and the extension part 3, and the inner side of the connection between the limiting part 4 and the extension part 3 is set to a right angle, so that the extension part 3 is easy to fit with the end face of the connector 10 and facilitate the limiting.

[0043] The flexible circuit board provided by the utility model has an inner edge of the limiting portion 4 aligned with the outer side of the connector 10 during plugging, ensuring that the plug-in portion 2 is inserted into the connector 10 in a straight line, avoiding the plug-in portion 2 from tilting during plugging, preventing the flexible circuit board from short-circuiting, and effectively protecting the flexible circuit board. At the same time, the setting of the limiting portion 4 can also avoid the plug-in portion 2 from scratching the non-plug portion of the connector 10, reducing wear and tear, increasing the service life of the flexible circuit board, and reducing the detection cost. The extension portion 3 and the limiting portion 4 can be made integrally with the plug-in portion 2, with a simple structure, convenient manufacturing, low processing cost, no need to change the original connector 10 structure, and strong adaptability.

[0044] Example 2

[0045] The flexible circuit board provided in Example 1 is further optimized, specifically, as follows Figure 3-5 As shown, the length of the limit portion 4 is greater than the length of the plug-in portion 2, so that the end of the plug-in portion 2 is recessed into the inner side of the two limit portions 4. When plugging in, the limit portion 4 first contacts the two sides of the connector 10. After the limit portion 4 is aligned and fits with the connector 10, it can be inserted into the connector 10 to avoid the plug-in portion 2 from being misplugged and scratching the non-plug-in portion of the connector 10, and to avoid the plug-in portion 2 from tilting during plugging, resulting in a short circuit in the line.

[0046] Furthermore, since the stopper 4 is the first and most frequently in contact with the connector 10, a scratch-resistant layer 9 is provided on the inner side of the stopper 4. The scratch-resistant layer 9 may be a polyester film that can be bonded, or a hard polymer that can be coated, a coated polymer, or a hard oxide, such as a zirconium oxide coating, a polytetrafluoroethylene (PTFE) coating, a chromium coating, or a silicon nitride coating. The provision of the scratch-resistant layer 9 can increase the service life of the stopper 4.

[0047] Example 3

[0048] Please refer to Figure 6-7 , a plug-in structure is provided, which includes the flexible circuit board and connector 10 in Example 1 and Example 2. The connector 10 adopts the original structure. The connector 10 is provided with a socket matching the plug-in part 2. The limit part 4 is fitted with the side of the connector 10. The distance between the two limit parts 4 is consistent with the width of the connector 10. After the plug-in part 2 is plugged into the socket on the connector 10, the extension part 3 is fitted with the connector 10. If the FPC edge is not aligned with the end of the connector 10, it can be determined that the FPC is not plugged in place, and the operator can be reminded to correct it.

[0049] Through the above structural design, when plugging in, the limiting parts 4 on both sides of the plug-in part 2 are aligned with the corresponding sides of the connector 10, so as to achieve the purpose of limiting the plug-in part 2, so that the plug-in part 2 can be inserted into the plug hole of the connector 10 in a straight line and smoothly, avoiding the plug-in part 2 and the connector 10 from scratching and protecting the plug-in part 2. At the same time, the extension part 3 can be used to conveniently and directly observe whether the plug-in part 2 is plugged in place, ensuring that the plug-in part 2 and the connector 10 can be electrically connected.

[0050] The working principle of the flexible circuit board and the plug-in structure provided by the utility model is as follows: the limiting parts 4 are connected to the two sides of the plug-in part 2 through the extension parts 3. When plugging, the inner edge of the limiting part 4 is aligned with the outer side of the connector 10, ensuring that the plug-in part 2 is inserted into the connector 10 in a straight line, avoiding the plug-in part 2 from tilting during plugging, preventing the flexible circuit board from short-circuiting, and effectively protecting the flexible circuit board. At the same time, the setting of the limiting part 4 can also avoid the plug-in part 2 from scratching the non-socket part of the connector 10, reducing wear and tear, increasing the service life of the flexible circuit board, and reducing the detection cost. In addition, the extension part 3 and the limiting part The positioning portion 4 and the plug-in portion 2 can be manufactured in one piece, with a simple structure, convenient manufacturing, low processing cost, no need to change the original structure of the connector 10, and strong adaptability. When plugging in, the limiting portions 4 on both sides of the plug-in portion 2 are aligned with the corresponding sides of the connector 10, so as to achieve the purpose of limiting the plug-in portion 2, so that the plug-in portion 2 can be smoothly inserted into the plug hole of the connector 10 in a straight line, avoiding scratches between the plug-in portion 2 and the connector 10, protecting the plug-in portion 2, and at the same time using the extension portion 3 to conveniently and directly observe whether the plug-in portion 2 is plugged in place, ensuring that the plug-in portion 2 and the connector 10 can be electrically connected.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A flexible circuit board, comprising a flexible section and a plug-in portion, characterized in that: Extending parts are arranged on both sides of the plug-in part, the extending parts are connected to the limiting parts, and the limiting parts extend along the plug-in direction of the plug-in part.

2. A flexible circuit board according to claim 1, characterized in that: The length of the limiting portion is greater than the length of the plug-in portion.

3. A flexible circuit board according to claim 1, characterized in that: A gold finger is arranged on one surface of the plug-in portion, a first reinforcement plate is arranged on the other surface of the plug-in portion, and a second reinforcement plate is arranged on the limiting portion.

4. A flexible circuit board according to claim 3, characterized in that: The extension portion is provided with a third reinforcement plate.

5. A flexible circuit board according to claim 4, characterized in that: The plug-in portion, the extending portion and the limiting portion form an E-type structure, and the first reinforcing plate, the second reinforcing plate and the third reinforcing plate are an integrated structure and match the E-type structure.

6. The flexible circuit board according to claim 1, characterized in that: The connection between the flexible section and the extension portion is an arc angle.

7. The flexible circuit board according to claim 1, characterized in that: The inner side of the connection between the limiting portion and the extending portion is a right angle, and the outer side of the connection between the limiting portion and the extending portion is an arc angle.

8. The flexible circuit board according to claim 1, characterized in that: A scratch-resistant layer is provided on the inner side of the limiting portion.

9. A plug-in structure, characterized in that: It comprises a flexible circuit board and a connector as described in any one of claims 1 to 8, wherein the connector is provided with a socket matching the plug-in portion, and the limiting portion is fitted with the side surface of the connector.

10. A plug-in structure according to claim 9, characterized in that: After the plug-in portion is plugged into the plug hole on the connector, the extension portion fits the connector.

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