CN112867234B

CN112867234B - Flexible printed circuit board

Info

Publication number: CN112867234B
Application number: CN202110034380.0A
Authority: CN
Inventors: 刘宇
Original assignee: Dongguan Huayin Electronic Technology Co ltd
Current assignee: Dongguan Huayin Electronic Technology Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2022-06-17
Anticipated expiration: 2041-01-12
Also published as: CN112867234A

Abstract

The invention provides a flexible printed circuit board, and relates to the technical field of circuit boards. This flexible printed circuit board, including the circuit board body, this internal basic unit that is provided with of circuit board, the bottom of basic unit is provided with the strengthening layer, and the top of basic unit and the bottom on strengthening layer all are provided with the insulating layer, two the surface of insulating layer all is provided with fire-retardant layer, the both ends of circuit board body all are provided with the link, one of them the joint piece behind the surface one side fixedly connected with of link, be provided with the connection piece on the joint piece, evenly distributed is provided with a plurality of jacks on the connection piece. Can strengthen whole flexible printed circuit board's tear resistance through setting up of strengthening layer, through the insulating layer and the fire-retardant layer that set up, can guarantee that the structure has stable insulating and flame retardant efficiency, can guarantee simultaneously that the structure is wear-resisting durable, through the joint design on the link that sets up, can carry out convenient stable circuit butt joint installation work.

Description

Flexible printed circuit board

Technical Field

The invention relates to the technical field of circuit boards, in particular to a flexible printed circuit board.

Background

A flexible printed circuit board, also called a flexible printed circuit board or a flexible printed circuit board, which is made of a polyimide or polyester film as a base material and has high reliability and excellent flexibility, is preferred because of its excellent characteristics such as light weight, thin thickness, and free bending and folding.

Along with the development of technology, also be more and more general to the use of flexible printed circuit board, and some flexible printed circuit boards of conventionality, although it can freely bend, overall structure intensity is not enough, tear resistance is not strong, the condition of fracture often appears easily, some flexible printed circuit boards of conventionality simultaneously, insulating and fire behaviour are lacked to some extent, the durability and the security of structure are not good, and some flexible printed circuit boards of conventionality, its joint design is when docking, adopt the mode of spot welding to dock more, not only operate inconvenience very, and then need force to cut after the follow-up dismantlement, lead to the structure to carry out normal use easily.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a flexible printed circuit board, which solves some defects and shortcomings of the prior art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a flexible printed circuit board comprises a circuit board body, wherein a base layer is arranged in the circuit board body, a strengthening layer is arranged at the bottom of the base layer, insulating layers are arranged at the top of the base layer and the bottom of the strengthening layer, flame-retardant layers are arranged on the outer surfaces of two insulating layers, connecting frames are arranged at two ends of the circuit board body, one side of the outer surface of one connecting frame is fixedly connected with a rear clamping block, a connecting sheet is arranged on the clamping block, a plurality of inserting holes are uniformly distributed on the connecting sheet, a connecting head is fixedly connected to the outer surface of the other connecting frame, an inserting groove is arranged on the outer surface of the connecting head, a plurality of inserting pins are fixedly connected to the inner wall of the inserting groove, two combined frames which are matched with each other and are rotatably connected through hinges are arranged on the outer surface of the circuit board body, a first groove is arranged on one side, opposite to the outer surfaces of the two combined frames, a moving frame is arranged in each of the two first grooves, a group of moving grooves are arranged on two sides of the inner wall of each of the two first grooves, moving blocks are connected in each of the two groups of moving grooves in a nested and sliding manner, a first spring is connected between one side of the outer surface of each of the two groups of moving blocks and one side of the inner wall of each of the two groups of moving grooves, one side of the outer surface of each of the two groups of moving blocks is fixedly connected with one side of the outer surface of each of the two moving frames, a pushing block is fixedly connected with one side of the outer surface of each of the two moving frames, a communicating groove in sliding fit with the pushing block is arranged on one side of the inner wall of each of the two first grooves, a second groove is arranged on one side of the outer surface of each of the two moving frames, a moving frame is arranged in each of the two second grooves, a group of inner grooves are arranged at positions at two ends of each of the two moving frames, and moving blocks are arranged in the two groups of inner grooves, and a second spring is connected between one side of the inner wall of each of the two groups of inner grooves and one side of the outer surface of each of the two groups of moving blocks, a limiting block is fixedly connected to one side of the outer surface of each of the two groups of moving blocks, a group of limiting grooves are formed in two sides of the inner wall of each of the two second grooves, the limiting blocks and the limiting grooves are arranged in a nested and matched mode, and a plurality of cleaning layers and a plurality of drying layers are arranged on the moving frames in a staggered mode.

Preferably, the base layer is made of polyimide, the reinforcing layer is made of glass fiber, the insulating layer is made of polytetrafluoroethylene, and the flame-retardant layer is made of epoxy resin.

Preferably, a plurality of heat conduction columns are uniformly distributed on the top of the base layer.

Preferably, the clamping blocks, the connecting sheets and the inserting slots are arranged in a nested matching manner, and the inserting pins and the inserting holes are correspondingly arranged in a matching manner.

Preferably, one side of the outer surface of one of the combined frames is fixedly connected with a clamping block, and one side of the outer surface of the other combined frame is provided with a clamping groove which is in nested fit with the clamping block.

Preferably, two the outer surface one side of adjustable shelf is leaned on and all is provided with through both ends position and accomodates the groove, two it all rotates to be connected with the pull ring to accomodate the inslot.

The working principle is as follows: during the use, through the strengthening layer, the setting on insulating layer and fire-retardant layer, can guarantee that whole circuit board has good anti tearing, insulating and fire behaviour, it is more wear-resisting durable to make the circuit board structure simultaneously, correspond joint piece and connection piece and insert in the connect slot, through the cooperation of connecing contact pin and plug jack, can carry out stable line connection work, with the built-up block joint on the circuit board, can stably dock through the cooperation of fixture block and draw-in groove, press the ejector pad, the ejector pad then promotes to remove clean layer and dry layer and the circuit board body surface contact on the frame drive adjustable shelf, the pulling built-up block moves on the circuit board body, can carry out stable clean work, can effectively clear away floating ash and moisture, guarantee that the circuit board structure has good operational environment.

(III) advantageous effects

The invention provides a flexible printed circuit board. The method has the following beneficial effects:

this flexible printed circuit board, the tearing resistance that can strengthen whole flexible printed circuit board through setting up of strengthening layer, through the insulating layer and the fire-retardant layer that set up, can guarantee that the structure has stable insulating and flame retardant efficiency, can guarantee simultaneously that the structure is wear-resisting durable, can effectively promote security and the durability that the structure used.

This flexible printed circuit board through the joint design on the link that sets up, can carry out convenient stable circuit butt joint installation work, and structural connection is stable, and is easy and simple to handle, and labour saving and time saving need not the conventional form of adopting spot welding that wastes time and expense and installs, also can play fine guard action to the structure simultaneously.

This flexible printed circuit board, through setting up the adjustable shelf structure in the built-up structure, can be stable smooth out with some winding or the flexible printed circuit board who rolls over straight to guarantee that the circuit can stabilize unblocked, simultaneously through clean layer and the dry layer on the adjustable shelf, can be stable carry out stable work of cleaning with ash floating and moisture on the flexible printed circuit board, can play fine guard action to the structure, the convenient dismantlement of structure is changed, and easy operation, time saving and labor saving, it is very nimble convenient to use.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic diagram of an inner layer structure of the circuit board body according to the present invention;

FIG. 3 is a schematic view of the connecting frame structure of the present invention;

FIG. 4 is a schematic structural view of the assembled rack of the present invention;

fig. 5 is an enlarged view of the invention at a in fig. 4.

The circuit board comprises a circuit board body, a first insulating layer and a second insulating layer, wherein 1, the circuit board body; 2. a base layer; 3. a strengthening layer; 4. an insulating layer; 5. a flame retardant layer; 6. a heat-conducting column; 7. a connecting frame; 8. a clamping block; 9. connecting sheets; 10. a jack; 11. a connector; 12. connecting a slot; 13. a contact pin is connected; 14. a combined rack; 15. a clamping block; 16. a card slot; 17. a first groove; 18. a movable frame; 19. a movable groove; 20. a movable block; 21. a first spring; 22. a push block; 23. a communicating groove; 24. a second groove; 25. a movable frame; 26. an inner tank; 27. a moving block; 28. a second spring; 29. a limiting block; 30. a limiting groove; 31. a receiving groove; 32. a pull ring; 33. a cleaning layer; 34. and (6) drying the layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment is as follows:

as shown in fig. 1-5, an embodiment of the present invention provides a flexible printed circuit board, which includes a circuit board body 1, a base layer 2 is disposed in the circuit board body 1, a reinforcing layer 3 is disposed at the bottom of the base layer 2, insulating layers 4 are disposed at the top of the base layer 2 and the bottom of the reinforcing layer 3, flame retardant layers 5 are disposed on the outer surfaces of the two insulating layers 4, connecting frames 7 are disposed at both ends of the circuit board body 1, a rear clamping block 8 is fixedly connected to one side of the outer surface of one of the connecting frames 7, a connecting sheet 9 is disposed on the clamping block 8, a plurality of inserting holes 10 are uniformly distributed on the connecting sheet 9, a connecting head 11 is fixedly connected to the outer surface of the other connecting frame 7, an inserting slot 12 is disposed on the outer surface of the connecting head 11, a plurality of inserting pins 13 are fixedly connected to the inner wall of the inserting slot 12, two combined frames 14 are disposed on the outer surface of the circuit board body 1, and are mutually matched and one end of the combined frames is rotatably connected through a hinge, the opposite sides of the outer surfaces of the two combined frames 14 are respectively provided with a first groove 17, the two first grooves 17 are respectively internally provided with a movable frame 18, two sides of the inner wall of each first groove 17 are respectively provided with a group of movable grooves 19, the two groups of movable grooves 19 are respectively connected with movable blocks 20 in a nested and sliding manner, a first spring 21 is respectively connected between one side of the outer surface of each movable block 20 and one side of the inner wall of each movable groove 19, one side of the outer surface of each movable block 20 is fixedly connected with one side of the outer surface of each movable frame 18, one side of the outer surface of each movable frame 18 is respectively connected with a push block 22, one side of the inner wall of each first groove 17 is respectively provided with a communicating groove 23 which is matched with the push block 22 in a nested and sliding manner, one side of the outer surface of each movable frame 18 is respectively provided with a second groove 24, the two movable frames 25 are respectively arranged in the two second grooves 24, two movable frames 25 are respectively provided with a group of inner grooves 26 at two ends, moving blocks 27 are arranged in the two groups of inner grooves 26, second springs 28 are connected between one side of the inner walls of the two groups of inner grooves 26 and one side of the outer surfaces of the two groups of moving blocks 27, limiting blocks 29 are fixedly connected to one side of the outer surfaces of the two groups of moving blocks 27, one group of limiting grooves 30 are arranged on two sides of the inner walls of the two second grooves 24, the two groups of limiting blocks 29 and the two groups of limiting grooves 30 are arranged in a nested and matched mode, and a plurality of cleaning layers 33 and drying layers 34 are arranged on the two movable frames 25 in a staggered mode; when the circuit board is used, the strengthening layer 3, the insulating layer 4 and the flame-retardant layer 5 are arranged, the whole circuit board can be ensured to have good tear resistance, insulation and flame retardant performance, meanwhile, the circuit board structure is more wear-resistant and durable, the clamping block 8 and the connecting sheet 9 are correspondingly inserted into the connecting slot 12, stable circuit connection work can be carried out through the matching of the connecting pin 13 and the connecting jack 10, the combination rack 14 is clamped on the circuit board, the clamping block 15 and the clamping slot 16 are matched to be stably butted, the push block 22 is pressed, the push block 22 pushes the movable rack 18 to drive the cleaning layer 33 and the drying layer 34 on the movable rack 25 to be in surface contact with the circuit board body 1, the combination rack 14 is pulled to move on the circuit board body 1, stable cleaning work can be carried out, floating ash and moisture can be effectively removed, and the circuit board structure is ensured to have a good working environment.

The base layer 2 is made of polyimide, the reinforcing layer 3 is made of glass fiber, the insulating layer 4 is made of polytetrafluoroethylene, the flame-retardant layer 5 is made of epoxy resin, the whole flexible printed circuit board structure can be guaranteed to have good tear resistance through arrangement of the materials, and meanwhile, the flexible printed circuit board structure has an insulating flame-retardant effect, is wear-resistant and durable in structure and can effectively improve the use safety and durability of the structure; a plurality of heat conduction columns 6 are uniformly distributed on the top of the base layer 2, and the whole circuit board structure can be ensured to have good heat dissipation performance through the structural arrangement; the clamping block 8, the connecting sheet 9 and the inserting slot 12 are arranged in a nesting matching way, the plurality of inserting pins 13 and the plurality of inserting holes 10 are correspondingly arranged in a matching way, and the structure can be used for conveniently and stably butting and installing lines; one side of the outer surface of one of the combined frames 14 is fixedly connected with a clamping block 15, one side of the outer surface of the other combined frame 14 is provided with a clamping groove 16 which is in nested fit with the clamping block 15, and the combined frames 14 can be ensured to be stably butted in structure through the arrangement of the structure; the groove 31 is all provided with through both ends position to the surface one side of two adjustable shelves 25, all rotates in two grooves 31 of accomodating and is connected with the pull ring 32, can conveniently stimulate adjustable shelf 25 through the setting of pull ring 32 to conveniently carry out the dismantlement work of adjustable shelf 25, can conveniently change clean structure.

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 appended claims and their equivalents.

Claims

1. A flexible printed circuit board includes a circuit board body (1), characterized in that: a base layer (2) is arranged in the circuit board body (1), a reinforcing layer (3) is arranged at the bottom of the base layer (2), insulating layers (4) are arranged at the top of the base layer (2) and the bottom of the reinforcing layer (3), flame retardant layers (5) are arranged on the outer surfaces of the two insulating layers (4), connecting frames (7) are arranged at the two ends of the circuit board body (1), one of the connecting frames (7) is fixedly connected with a rear clamping block (8) on one side of the outer surface, a connecting sheet (9) is arranged on the rear clamping block (8), a plurality of inserting holes (10) are uniformly distributed on the connecting sheet (9), the other connecting frame (7) is fixedly connected with a connector (11) on the outer surface, an inserting groove (12) is arranged on the outer surface of the connector (11), and a plurality of inserting pins (13) are fixedly connected with the inner wall of the inserting groove (12), the surface of circuit board body (1) is provided with two and mutually supports just one end and passes through hinge rotation connection's combined bay (14), two one side that the surface of combined bay (14) is relative all is provided with first recess (17), two all be provided with in first recess (17) and remove frame (18), and two first recess (17) inner wall both sides all are provided with a set of movable groove (19), and are two sets of all nested sliding connection has movable block (20) in movable groove (19), and is two sets of all be connected with first spring (21) between the surface one side of movable block (20) and two sets of movable groove (19) inner wall one sides, and the surface one side of two sets of movable block (20) and the surface one side fixed connection that two removed frame (18), two the equal fixedly connected with ejector pad (22) in surface one side that removes frame (18), two inner wall one side of first recess (17) all is provided with and overlaps sliding fit with ejector pad (22) mutually The two moving frames (18) are respectively provided with a second groove (24) at one side opposite to the outer surface, the two second grooves (24) are respectively provided with a moving frame (25), two groups of inner grooves (26) are respectively arranged in the two moving frames (25) and at the two ends, moving blocks (27) are respectively arranged in the two groups of inner grooves (26), and a second spring (28) is connected between one side of the inner wall of each of the two groups of inner grooves (26) and one side of the outer surface of each of the two groups of moving blocks (27), a limiting block (29) is fixedly connected to one side of the outer surface of each of the two groups of moving blocks (27), a set of limiting grooves (30) are formed in two sides of the inner wall of each of the two second grooves (24), the two groups of limiting blocks (29) and the two groups of limiting grooves (30) are arranged in a nested fit mode, and a plurality of cleaning layers (33) and drying layers (34) are arranged on the two movable frames (25) in a staggered mode.

2. A flexible printed circuit board according to claim 1, characterized in that: the base layer (2) is made of polyimide, the reinforcing layer (3) is made of glass fiber, the insulating layer (4) is made of polytetrafluoroethylene, and the flame-retardant layer (5) is made of epoxy resin.

3. A flexible printed circuit board according to claim 1, characterized in that: the top of basic unit (2) evenly distributed is provided with a plurality of heat conduction post (6).

4. A flexible printed circuit board according to claim 1, characterized in that: the back clamping blocks (8), the connecting sheets (9) and the inserting grooves (12) are arranged in a nested matching mode, and the inserting pins (13) and the inserting holes (10) are correspondingly arranged in a matching mode.

5. A flexible printed circuit board according to claim 1, characterized in that: one side of the outer surface of one of the combined frames (14) is fixedly connected with a clamping block (15), and one side of the outer surface of the other combined frame (14) is provided with a clamping groove (16) which is in nested fit with the clamping block (15).

6. A flexible printed circuit board according to claim 1, characterized in that: two outer surface one side of adjustable shelf (25) is leaned on and all is provided with through both ends position and accomodates groove (31), two it all rotates in groove (31) to accomodate is connected with pull ring (32).