CN216437551U

CN216437551U - Flexible circuit board for multi-channel transmission

Info

Publication number: CN216437551U
Application number: CN202122520850.2U
Authority: CN
Inventors: 黄夏雨; 张新红; 陈继煜; 周鹏; 李凯
Original assignee: Zhongshan Xinying Electronic Technology Co ltd
Current assignee: Zhongshan Xinying Electronic Technology Co ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-05-03
Anticipated expiration: 2031-10-20

Abstract

The utility model discloses a flexible circuit board of multichannel transmission, include: the board is arranged in control substrate, flexible kink, transmission and attached to inside flexible restriction portion of flexible kink and warning light strip, and a plurality of transmission channels are installed to the inside embedding of flexible kink, and the tip of control substrate passes through transmission channel and transmits the end electrode connection of arranging the board, and the both sides of flexible kink are equipped with flexible tectorial membrane. The utility model discloses in, through pressing from both sides dress flexibility restriction portion and warning light strip structure in the inside of flexible kink, utilize the bending type of flexibility restriction portion following flexible kink to carry out synchronous buckling and receive bending deformation and warning light strip electrode switch-on through the electrode arc strip to electrify electroluminescent coating, thereby utilize the luminous characteristic of electroluminescent coating circular telegram to remind the flexible circuit board that buckles and reach furthest and avoid buckling excessively and lead to damage, improve the life of this circuit board.

Description

Flexible circuit board for multi-channel transmission

Technical Field

The utility model relates to a flexible transmission circuit board technical field specifically is a flexible circuit board of multichannel transmission.

Background

A terminal such as a computer includes an RF (radio frequency) signal line, and since the RF signal line is conventionally mounted in the form of a coaxial cable, space utilization in a wireless terminal device is reduced when the RF signal line is mounted in the form of a coaxial cable, a flexible circuit board is generally used in recent years. In a high-frequency transmission line, if a coaxial connector is used to prevent signal interference between the coaxial connector and the like, the space occupied by the coaxial connector itself and a fixing body for fixing the coaxial connector increases, and in order to solve such a space problem, a flexible circuit board is required.

However, the existing flexible circuit board transmission circuit board mainly adopts the insulation base layer and the transmission channel to carry out interlayer arrangement, the bending limit of the flexible circuit board transmission circuit board is also greatly different in the bending process due to the fact that the insulation base layer and the non-insulation transmission channel are different in material, when the high bending effect is achieved, the phenomenon that the insulation base layer and the non-insulation transmission channel are layered easily occurs to cause the damage of the circuit board, even the fracture of the non-insulation transmission channel is caused, if hidden fracture occurs, the circuit board cannot be used, the later maintenance and operation are complex, no prompt warning structure exists in the flexible bending process of the circuit board, and therefore certain defects exist.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art or the correlation technique.

Therefore, the utility model discloses the technical scheme who adopts does: a multi-channel transmission flexible circuit board comprising: the flexible warning device comprises a control substrate, a flexible bending part, a transmission row plate, a flexible limiting part and a warning light bar, wherein the flexible limiting part and the warning light bar are attached to the interior of the flexible bending part; the flexible limiting part comprises a bent conducting bar and an insulating film protecting layer, wherein adhesive layers are arranged on two sides of the bent conducting bar and are fixedly adhered to the insulating film protecting layer through the adhesive layers, a bent V-shaped groove and a protective column hole are formed in the surface of the bent conducting bar, an electrode arc bar is fixedly installed inside the bent V-shaped groove, and the warning light bar is fixed on the inner side of the insulating film protecting layer and is located inside the bent V-shaped groove; the warning lamp strip comprises a flexible lamp strip and a first electrode strip and a second electrode strip which are attached to the interior of the flexible lamp strip, a gap is formed between the first electrode strip and the second electrode strip, the first electrode strip and the second electrode strip are coated with electroluminescent paint, a static connection contact is arranged at the end of the second electrode strip, and the bottom surface of the first electrode strip is exposed out of the bottom surface of the flexible lamp strip.

The present invention may be further configured in a preferred embodiment as: the control substrate and the transmission row board are of a silicon-based PCB structure, the flexible bending part is of a printed circuit board structure made of polyimide or polyester film serving as a base material, and the flexible film is of an insulating shielding film structure.

By adopting the technical scheme, the flexible bending of the circuit board structure is realized, and the transmission channel is printed and attached to the inside of the flexible bending part for electrode transmission.

The present invention may be further configured in a preferred embodiment as: the thickness of the flexible bending part is 2-3mm, the thickness of the flexible limiting part is smaller than 2mm, the bending V-shaped groove is of a 60-degree V-shaped groove structure, and the protection column hole is located at the bottom end of the bending V-shaped groove.

Through adopting above-mentioned technical scheme, when crooked conducting bar is crooked, the V inslot of buckling reduces gradually and makes the electrode arc strip crooked to electrify electroluminescent paint, utilize the luminous characteristic of electroluminescent paint circular telegram to remind the user's flexibility to buckle and reach furthest thereby avoid buckling the circuit board damage that excessively leads to.

The present invention may be further configured in a preferred embodiment as: the electrode arc strip is of an elastic metal foil structure, the top surface of the electrode arc strip and the bottom surface of the first electrode strip are oppositely arranged and provided with intervals, the electrode arc strip is arranged in an arch structure, the electrode arc strip and the static connecting contact are respectively communicated with two stages of power supplies of the warning light bar, and a gap is formed between the first electrode strip and the top surface of the electrode arc strip.

By adopting the technical scheme, the elastic metal foil and the first electrode strip are connected by utilizing the spacing to isolate the electrodes of the electroluminescent coating, and when the flexible bending part is bent to reach the set maximum bending limit, the electrodes are connected by the butting of the electrode arc strip and the first electrode strip.

The present invention may be further configured in a preferred embodiment as: the bent conducting strip is of an insulating strip structure and is a polyimide component.

By adopting the technical scheme, the bending guide strip and the flexible bending part which are made of the same material are bent together, and the material with the same bending effect can avoid the layering phenomenon caused by different curvatures in the bending of the flexible bending part.

The present invention may be further configured in a preferred embodiment as: the first electrode strip and the second electrode strip are of metal foil strip structures, and the electroluminescent paint is sprayed on the first electrode strip, the second electrode strip and the gap surfaces of the first electrode strip and the second electrode strip.

By adopting the technical scheme, the electroluminescent paint emits fluorescence to remind an operator of bending to the maximum limit, so that the separation problem caused by the difference of the bending limit of the flexible bending part and the bending limit of the transmission channel is avoided.

The utility model discloses the beneficial effect who gains does:

1. the utility model discloses in, through pressing from both sides dress flexibility restriction portion and warning light strip structure in the inside of flexible kink, utilize the bending type of flexibility restriction portion following flexible kink to carry out synchronous buckling and receive bending deformation and warning light strip electrode switch-on through the electrode arc strip to electrify electroluminescent coating, thereby utilize the luminous characteristic of electroluminescent coating circular telegram to remind the flexible circuit board that buckles and reach furthest and avoid buckling excessively and lead to damage, improve the life of this circuit board.

2. The utility model discloses in, adopt the luminous suggestion structure of electroluminescent coating circular telegram, warning light strip whole arrangement can carry out the common bending action with flexible kink in the flexible bending direction in the inside in the V groove of buckling, avoids causing the restriction to the flexible curvature of flexible kink, guarantees this flexible circuit board's flexibility.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure view of a flexible bending portion according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a flexible limiting portion according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a point a in fig. 3 according to an embodiment of the present invention;

fig. 5 is a schematic view of a warning light bar according to an embodiment of the present invention.

Reference numerals:

100. a control substrate; 110. a flexible bend; 120. a transmission row plate; 111. flexible film covering; 112. a transmission channel;

200. a flexible restriction portion; 210. bending the conducting bar; 220. an insulating film protecting layer; 230. an adhesive layer; 211. bending the V-shaped groove; 212. a guard post hole; 213. an electrode arc bar;

300. a warning light bar; 310. a flexible light bar; 320. an electroluminescent paint; 330. a first electrode strip; 340. a second electrode strip; 341. and statically connecting the contacts.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

It is to be understood that such description is merely exemplary and is not intended to limit the scope of the present invention.

The following describes a multi-channel transmission flexible circuit board provided by some embodiments of the present invention with reference to the accompanying drawings.

With reference to fig. 1-5, the present invention provides a flexible circuit board for multi-channel transmission, including: the control device comprises a control substrate 100, a flexible bending part 110, a transmission row board 120, and a flexible limiting part 200 and a warning light bar 300 which are attached to the interior of the flexible bending part 110, wherein a plurality of transmission channels 112 are embedded in the interior of the flexible bending part 110, the end part of the control substrate 100 is connected with an end part electrode of the transmission row board 120 through the transmission channels 112, and flexible coatings 111 are arranged on two sides of the flexible bending part 110; the flexible limiting part 200 comprises a bent conducting bar 210 and an insulating film protecting layer 220, wherein adhesive layers 230 are arranged on two sides of the bent conducting bar 210 and are fixedly adhered to the insulating film protecting layer 220 through the adhesive layers 230, a bent V-shaped groove 211 and a protective column hole 212 are formed in the surface of the bent conducting bar 210, an electrode arc bar 213 is fixedly installed inside the bent V-shaped groove 211, and the warning light bar 300 is fixed on the inner side of the insulating film protecting layer 220 and is located inside the bent V-shaped groove 211; the warning light bar 300 comprises a flexible light bar 310, and a first electrode strip 330 and a second electrode strip 340 attached to the interior of the flexible light bar 310, wherein a gap is formed between the first electrode strip 330 and the second electrode strip 340, the first electrode strip 330 and the second electrode strip 340 are sprayed with an electroluminescent paint 320, a static connection contact 341 is arranged at an end of the second electrode strip 340, and the bottom surface of the first electrode strip 330 is exposed outside the bottom surface of the flexible light bar 310.

In this embodiment, the control substrate 100 and the transmission line board 120 are silicon-based PCB structures, the flexible bending portion 110 is a printed circuit board structure made of polyimide or polyester film as a base material, the flexible cover film 111 is an insulation shielding film structure, so as to achieve flexible bending of the circuit board structure, and the transmission channel 112 is printed and attached to the inside of the flexible bending portion 110 for electrode transmission.

In this embodiment, the thickness of the flexible bending portion 110 is 2-3mm, the thickness of the flexible limiting portion 200 is less than 2mm, the bending V-shaped groove 211 is a 60 ° V-shaped groove structure, and the guard post hole 212 is located at the bottom end of the bending V-shaped groove 211.

Specifically, when the bending conducting bar 210 is bent, the bending V-shaped groove 211 is gradually reduced to bend the electrode arc bar 213, so as to energize the electroluminescent paint 320, and the characteristics of energization and luminescence of the electroluminescent paint 320 are utilized to remind a user of the flexible bending to reach the maximum, thereby avoiding the damage of the circuit board caused by excessive bending.

In this embodiment, the electrode arc strip 213 is an elastic metal foil structure, the top surface of the electrode arc strip 213 is disposed opposite to and spaced from the bottom surface of the first electrode strip 330, the electrode arc strip 213 is disposed in an arc structure, the electrode arc strip 213 and the static connection contact 341 are respectively connected to two stages of power supplies of the warning light bar 300, and a gap is formed between the first electrode strip 330 and the top surface of the electrode arc strip 213.

Specifically, the elastic metal foil and the first electrode strip 330 are electrically connected by isolating the electrodes of the electroluminescent paint 320 by using a gap, and when the flexible bending portion 110 is bent to reach a set maximum bending limit, the electrodes are connected by the contact between the electrode arc 213 and the first electrode strip 330.

In this embodiment, the bending bars 210 are insulating bar structures, and the bending bars 210 are polyimide members.

Specifically, by bending the bending bars 210 and the flexible bending portion 110 together, the materials with the same bending effect can avoid the delamination caused by different curvatures during the bending of the flexible bending portion 110.

In this embodiment, the first electrode stripes 330 and the second electrode stripes 340 are metal foil stripe structures, and the electroluminescent paint 320 is sprayed on the first electrode stripes 330, the second electrode stripes 340 and the gap surfaces of the first electrode stripes 330 and the second electrode stripes 340.

Specifically, the electroluminescent paint 320 emits fluorescence to remind the operator of maximum bending, so as to avoid the separation problem caused by the difference between the bending limits of the flexible bending part 110 and the transmission channel 112.

The utility model discloses a theory of operation and use flow:

when the flexible circuit board structure is used, when the flexible bending part 110 is bent, the flexible bending part 110, the flexible limiting part 200 and the warning light bar 300 are synchronously bent and deformed, when the bending guide bar 210 is bent, the interior of the bending V-shaped groove 211 is gradually reduced to bend the electrode arc strip 213, when the bending of the flexible bending part 110 and the bending guide bar 210 reaches the maximum set limit, the electrode arc strip 213 is contacted with the first electrode strip 330 on the bottom surface of the warning light bar 300 along with the bending arch, the electroluminescent paint 320 is electrified through the communication of the electrodes at the two ends of the second electrode strip 340 and the first electrode strip 330, the electroluminescent paint 320 emits fluorescence to remind an operator that the bending reaches the maximum limit, and therefore the separation problem caused by the difference of the bending limits of the flexible bending part 110 and the transmission channel 112 is avoided.

In the present application, the term "plurality" means two or more unless expressly defined otherwise. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It will be understood that when an element is referred to as being "mounted to," "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

Claims

1. A multi-channel transmission flexible circuit board, comprising: the flexible warning lamp comprises a control substrate (100), a flexible bending part (110), a transmission row board (120), a flexible limiting part (200) and a warning lamp bar (300), wherein the flexible limiting part (200) and the warning lamp bar (300) are attached to the interior of the flexible bending part (110), a plurality of transmission channels (112) are embedded and mounted in the flexible bending part (110), the end part of the control substrate (100) is connected with an end part electrode of the transmission row board (120) through the transmission channels (112), and flexible coating films (111) are arranged on two sides of the flexible bending part (110);

the flexible limiting part (200) comprises a bent guide strip (210) and an insulating protective film layer (220), wherein adhesive layers (230) are arranged on two sides of the bent guide strip (210) and are fixedly adhered to the insulating protective film layer (220) through the adhesive layers (230), a bent V-shaped groove (211) and a protective column hole (212) are formed in the surface of the bent guide strip (210), an electrode arc strip (213) is fixedly installed inside the bent V-shaped groove (211), and the warning light bar (300) is fixed on the inner side of the insulating protective film layer (220) and is located inside the bent V-shaped groove (211);

the warning light bar (300) comprises a flexible light bar (310), and a first electrode strip (330) and a second electrode strip (340) which are attached to the interior of the flexible light bar (310), wherein a gap is formed between the first electrode strip (330) and the second electrode strip (340), an electroluminescent coating (320) is sprayed on the gap, a static connection contact (341) is arranged at the end part of the second electrode strip (340), and the bottom surface of the first electrode strip (330) is exposed out of the bottom surface of the flexible light bar (310).

2. The flexible circuit board for multi-channel transmission according to claim 1, wherein the control substrate (100) and the transmission row board (120) are silicon-based PCB structures, the flexible bending part (110) is a printed circuit board structure made of polyimide or polyester film as a base material, and the flexible cover film (111) is an insulating shielding film structure.

3. The flexible circuit board for multi-channel transmission according to claim 1, wherein the thickness of the flexible bending portion (110) is 2-3mm, the thickness of the flexible limiting portion (200) is less than 2mm, the bending V-shaped groove (211) has a 60 ° V-shaped groove structure, and the guard post hole (212) is located at the bottom end of the bending V-shaped groove (211).

4. A multi-channel transmission flexible circuit board according to claim 1, wherein the electrode arc strips (213) are elastic metal foil structures, the top surfaces of the electrode arc strips (213) are arranged opposite to the bottom surfaces of the first electrode strips (330) with a spacing therebetween, and the electrode arc strips (213) are arranged in an arch structure.

5. The flexible circuit board of claim 1, wherein the electrode arc strip (213) and the static connection contact (341) are respectively connected with two stages of power supplies of the warning light bar (300), and the first electrode strip (330) and the top surface of the electrode arc strip (213) are provided with a gap.

6. The flexible circuit board for multi-channel transmission according to claim 1, wherein the curved conductive strip (210) is an insulative strip structure, and the curved conductive strip (210) is a polyimide material member.

7. A multi-channel transmission flexible circuit board according to claim 1, wherein the first electrode strips (330) and the second electrode strips (340) are metal foil strip structures, and the electroluminescent paint (320) is sprayed on the first electrode strips (330), the second electrode strips (340) and the gap surfaces of the first electrode strips (330) and the second electrode strips (340).