Multi-layer flexible circuit board with blind hole structure

Abstract

The utility model belongs to the technical field of multi-layer flexible circuit boards, and particularly relates to a multi-layer flexible circuit board with a blind hole structure, which comprises a circuit board, a mounting seat fixedly mounted at the top of the circuit board, a mounting groove formed in the top of the mounting seat, and a multi-layer flexible circuit board arranged on one side of the mounting seat, a touch block is fixedly mounted on the multilayer flexible circuit board and located in the mounting groove, a rotating plate is rotationally mounted on the mounting base, a touch groove is formed in the bottom of the rotating plate, first screws are mounted on the top of the rotating plate and located on the two sides of the touch groove in a threaded mode, and the bottom ends of the first screws extend into the mounting base; according to the utility model, the multi-layer flexible circuit board can be effectively prevented from loosening in a vibration environment, the buffer effect of the first rubber pad and the second rubber pad can absorb external tension, welding spots of the multi-layer flexible circuit board are prevented from being stressed and broken, the detachable structure is convenient to maintain and replace, and the service life of the multi-layer flexible circuit board is prolonged. The maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to multilayer flexible circuit board technical field especially relates to a multilayer flexible circuit board with blind hole structure. BACKGROUND

[0002] The multilayer flexible circuit board with blind hole structure is an advanced electronic circuit carrier, which is formed by alternately stacking multiple insulating layers and conductive layers, and the conductive layers are electrically connected through blind holes, buried holes or through holes, which can realize complex circuit functions. The blind hole is a through hole that connects the surface layer and the inner layer without penetrating the entire board, and is located on the top and bottom surfaces of the circuit board with a certain depth, used for connecting the surface layer circuit and the underlying inner layer circuit.

[0003] The prior art usually uses screws to directly fix or simple buckle structures to fix the flexible circuit board, which is prone to looseness in a vibrating environment. In addition, stress concentration generated during screw tightening can cause blind hole wall cracking or interlayer separation, affecting signal transmission stability. Furthermore, the bendable nature of the flexible circuit board makes it difficult for traditional rigid fixing structures to effectively constrain it when subjected to accidental tension, which can cause solder joint cracking or overall circuit board detachment. In view of this, we propose a multilayer flexible circuit board with blind hole structure. SUMMARY

[0004] The utility model discloses a multilayer flexible circuit board with blind hole structure to solve the problem raised in the background.

[0005] Therefore, the utility model provides a multilayer flexible circuit board with blind hole structure, comprising:

[0006] The circuit board has a mounting seat fixedly installed on the top, an installation groove is formed in the top of the mounting seat, a multilayer flexible circuit board is arranged on one side of the mounting seat, a contact block is fixedly installed on the multilayer flexible circuit board and located in the installation groove, a rotating plate is rotatably installed on the mounting seat, a contact groove is formed in the bottom of the rotating plate, a screw one is screwedly installed on the top of the rotating plate and located on both sides of the contact groove, and the bottom end of the screw one extends into the mounting seat.

[0007] The bottom of the bottom plate is fixedly installed with a rubber pad two, the other side of the bottom is fixedly installed with a fixing seat, a screw two is screwedly installed on the bottom plate, and the bottom end of the screw two extends into the fixing seat.

[0008] In the technical solution, when the multilayer flexible circuit board is installed on the circuit board, two screws one and two can be unscrewed first, and the rotating plate and the pressing plate are opened, the contact block on the multilayer flexible circuit board is placed in the installation slot, then the rotating plate is rotated downward until the contact groove at the bottom of the rotating plate is clamped on the contact block, and the two screws one are fixed on the rotating plate and are rotated respectively, and under the action of the screw thread, the two screws one can be screwed into the mounting seat, thereby limiting the rotating plate, and the contact groove can limit the contact block, thereby fixing the multilayer flexible circuit board in the mounting seat, and ensuring that the fixed multilayer flexible circuit board is not easy to fall off.

[0009] Then, the personnel can rotate the pressing plate until the bottom rubber pad two of the pressing plate abuts against the top of the multilayer flexible circuit board, at this time, the bottom of the multilayer flexible circuit board is in close contact with the top of the rubber pad one, and then the screw two is screwed into the fixing seat, at this time, the screw two can fasten the pressing plate, so that the base and the pressing plate can clamp the multilayer flexible circuit board, and under the action of the rubber pad one and the rubber pad two, the multilayer flexible circuit board can be prevented from sliding, thereby further fixing the multilayer flexible circuit board, and ensuring that the multilayer flexible circuit board is not easy to fall off when it is pulled by mistake, thereby reducing the maintenance frequency of the multilayer flexible circuit board.

[0010] In the above technical solution, further, the circuit board is provided with a plurality of blind holes.

[0011] In the technical solution, the structure stability of the circuit board and the plurality of blind holes is ensured.

[0012] In the above technical solution, further, the bottom end of the screw one is threadedly connected with the mounting seat, and the bottom end of the screw two is threadedly connected with the fixing seat.

[0013] In the technical solution, the bottom end of the screw one can be rotated into the mounting seat, and the bottom end of the screw two can be rotated into the fixing seat.

[0014] In the above technical solution, further, the fixing seat is fixed to the top of the circuit board, and the mounting frame is fixed to the top of the circuit board.

[0015] In the technical solution, the structure stability of the fixing seat, the mounting frame and the circuit board is ensured.

[0016] In the above technical solution, further, the contact groove is clamped and matched with the contact block.

[0017] In the technical solution, the contact groove can be clamped on the contact block, and the structure stability of the contact block is ensured.

[0018] In the above technical solution, further, the multilayer flexible circuit board is located between the rubber pad one and the rubber pad two.

[0019] In the technical solution, the rubber pad one and the rubber pad two can position the multilayer flexible circuit board.

[0020] In the above technical solution, further, the base and the mounting frame are integrally formed.

[0021] In the technical solution, the structure of the base and the mounting frame is stable.

[0022] The beneficial effects of the utility model are:

[0023] The multilayer flexible circuit board with the blind hole structure is pressed down by the elastic clamping of the double positioning structure cooperation of the contact block and the contact groove, realizes the three-dimensional direction fixation of the multilayer flexible circuit board, can effectively prevent the multilayer flexible circuit board from loosening in the vibration environment, the buffer effect of the rubber pad one and the rubber pad two can absorb external tension, avoids the force fracture of the multilayer flexible circuit board welding point, the detachable structure is convenient to maintain and replace, and the maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall structure schematic view of the utility model;

[0025] Figure 2 It is the area structure schematic view of the circuit board in the utility model;

[0026] Figure 3 It is the structure schematic view of the rotating plate opening in the utility model;

[0027] Figure 4 It is the structure schematic view of the lower pressing plate opening in the utility model;

[0028] Figure 5 It is the area structure schematic view of the contact block in the utility model.

[0029] The marks in the drawing are:

[0030] 1, circuit board; 2, mounting seat; 3, mounting groove; 4, multilayer flexible circuit board; 5, contact block; 6, blind hole; 7, rotating plate; 8, contact groove; 9, screw one; 10, base; 11, rubber pad one; 12, mounting frame; 13, lower pressing plate; 14, rubber pad two; 15, fixed seat; 16, screw two. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be clearly described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the application.

[0032] In the description of the present application, it should be noted that the terms used herein are merely for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. For the purpose of description, the dimensions of the various parts shown in the drawings are not drawn to scale. The techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0033] It should be noted that the terms "first", "second", and the like in the description and claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of such terms is interchangeable under appropriate circumstances such that the embodiments of the present application described herein are capable of operation in other sequences than those described or otherwise illustrated herein. Furthermore, the terms "comprise", "include", "contain", and / or "have" and variations thereof, as used herein, are intended to be open-ended transitional phrases, terms, or words that do not limit the description of the embodiments of the present application to the features recited after such transitional phrases, terms, or words. In other words, such transitional phrases, terms, or words are not intended to be limiting.

[0034] It should be noted that in the description of the present application, the orientation or positional relationships indicated by the terms such as "front", "back", "upper", "lower", "left", "right", "horizontal", "vertical", "vertical", "horizontal", and "top", "bottom" are generally based on the orientation or positional relationships shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description. Without being contrary to the description, these orientation terms do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be understood as limiting the scope of protection of the present application. The orientation terms "inner" and "outer" refer to the inner and outer relative to the contour of the parts themselves.

[0035] It should be noted that, in the present application, the terms "comprising", "containing" or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described methods can be performed in an order different from that described, and various steps can be added, omitted, or combined. In addition, features described with reference to certain examples can be combined in other examples.

[0036] Embodiment 1:

[0037] Please refer to Figure 1 - Figure 5 As shown in the figure, the embodiment provides a multilayer flexible circuit board with a blind hole structure, comprising:

[0038] A circuit board 1, a mounting seat 2 is fixedly installed on the top of the circuit board 1, a mounting groove 3 is opened on the top of the mounting seat 2, a multilayer flexible circuit board 4 is arranged on one side of the mounting seat 2, a contact block 5 is fixedly installed on the multilayer flexible circuit board 4 and located in the mounting groove 3, a rotating plate 7 is rotatably installed on the mounting seat 2, a contact groove 8 is opened on the bottom of the rotating plate 7, a screw 9 is threadedly installed on the top of the rotating plate 7 and located on both sides of the contact groove 8, and the bottom end of the screw 9 extends into the mounting seat 2.

[0039] A base 10 is fixedly installed on the top of the circuit board 1 and located on one side of the mounting seat 2, a rubber pad 11 is fixedly installed on the top of the base 10, a mounting frame 12 is fixedly installed on one side of the base 10, a pressing plate 13 is rotatably installed on the top end of the mounting frame 12, a rubber pad 14 is fixedly installed on the bottom of the pressing plate 13, a fixing seat 15 is fixedly installed on the other side of the base 10, and a screw 16 is threadedly installed on the pressing plate 13 and extends into the fixing seat 15.

[0040] Wherein, when installing the multilayer flexible circuit board 4 on the circuit board 1, the two screws one 9 and the screw two 16 can be unscrewed first, and the rotating plate 7 and the pressing plate 13 are opened, then the contact block 5 on the multilayer flexible circuit board 4 is put into the mounting groove 3, and then the rotating plate 7 is rotated downward until the contact groove 8 at the bottom of the rotating plate 7 is clamped on the contact block 5, and then the two screws one 9 are installed on the rotating plate 7 and are rotated respectively, and under the action of the threads, the two screws one 9 can be screwed into the mounting seat 2, thereby limiting the rotating plate 7, and the contact groove 8 can limit the contact block 5, thereby fixing the multilayer flexible circuit board 4 in the mounting seat 2, and ensuring that the fixed multilayer flexible circuit board 4 is not easy to fall off;

[0041] Then, the personnel can rotate the pressing plate 13 until the bottom rubber pad two 14 of the pressing plate 13 abuts against the top of the multilayer flexible circuit board 4, at this time the bottom of the multilayer flexible circuit board 4 is in close contact with the top of the rubber pad one 11, and then the screw two 16 is screwed into the fixing seat 15, at this time the screw two 16 can fasten the pressing plate 13, so that the base 10 and the pressing plate 13 can clamp the multilayer flexible circuit board 4, and under the action of the rubber pad one 11 and the rubber pad two 14, the multilayer flexible circuit board 4 can be prevented from sliding, thereby further fixing the multilayer flexible circuit board 4, and ensuring that the multilayer flexible circuit board 4 is not easy to fall off when it is pulled by mistake, thereby reducing the maintenance frequency of the multilayer flexible circuit board 4.

[0042] Embodiment 2:

[0043] The embodiment provides a multilayer flexible circuit board with a blind hole structure, in addition to the technical scheme of the above-mentioned embodiment, further having the following technical features, the circuit board 1 is provided with a plurality of blind holes 6.

[0044] Among them, ensure the structural stability of the circuit board 1 and the plurality of blind holes 6.

[0045] Embodiment 3:

[0046] The embodiment provides a multilayer flexible circuit board with a blind hole structure, in addition to the technical scheme of the above-mentioned embodiment, further having the following technical features, the bottom end of the screw one 9 is threadedly connected with the mounting seat 2, and the bottom end of the screw two 16 is threadedly connected with the fixing seat 15.

[0047] Among them, ensure that the bottom end of the screw one 9 can be rotated into the mounting seat 2, and ensure that the bottom end of the screw two 16 can be rotated into the fixing seat 15.

[0048] Embodiment 4:

[0049] The embodiment provides a multilayer flexible circuit board with a blind hole structure, in addition to comprising the technical scheme of the above embodiment, further has the following technical features, the fixed seat 15 is fixed with the top of the circuit board 1, the mounting frame 12 is fixed with the top of the circuit board 1.

[0050] Wherein, ensure the structure stability of fixed seat 15 and mounting frame 12 and circuit board 1.

[0051] Embodiment 5:

[0052] The embodiment provides a multilayer flexible circuit board with a blind hole structure, in addition to comprising the technical scheme of the above embodiment, further has the following technical features, the fixed seat 15 is fixed with the top of the circuit board 1, the mounting frame 12 is fixed with the top of the circuit board 1.

[0053] Wherein, ensure the structure stability of fixed seat 15 and mounting frame 12 and circuit board 1.

[0054] Embodiment 6:

[0055] The embodiment provides a multilayer flexible circuit board with a blind hole structure, in addition to comprising the technical scheme of the above embodiment, further has the following technical features, the fixed seat 15 is fixed with the top of the circuit board 1, the mounting frame 12 is fixed with the top of the circuit board 1.

[0056] Wherein, ensure the structure stability of fixed seat 15 and mounting frame 12 and circuit board 1.

[0057] Embodiment 7:

[0058] The embodiment provides a multilayer flexible circuit board with a blind hole structure, in addition to comprising the technical scheme of the above embodiment, further has the following technical features, the fixed seat 15 is fixed with the top of the circuit board 1, the mounting frame 12 is fixed with the top of the circuit board 1.

[0059] Wherein, ensure the structure stability of fixed seat 15 and mounting frame 12 and circuit board 1.

[0060] Working principle: when the multilayer flexible circuit board 4 is installed on the circuit board 1, two screws one 9 and screw two 16 can be unscrewed, and the rotating plate 7 and the pressing plate 13 are opened, then the contact block 5 on the multilayer flexible circuit board 4 is put into the mounting groove 3, then the rotating plate 7 is rotated downward, until the contact groove 8 at the bottom of the rotating plate 7 is clamped on the contact block 5, then the two screws one 9 are fixed on the rotating plate 7, and the two screws one 9 are rotated respectively, under the action of the screw thread, the two screws one 9 can be screwed into the mounting seat 2, so that the rotating plate 7 is limited, and the contact groove 8 can limit the contact block 5, so that the multilayer flexible circuit board 4 is fixed in the mounting seat 2, and the fixed multilayer flexible circuit board 4 is not easy to fall off.

[0061] Subsequently, the personnel can rotate the lower pressing plate 13 until the bottom rubber pad two 14 of the lower pressing plate 13 is abutted against the top of the multilayer flexible circuit board 4, at this time the bottom of the multilayer flexible circuit board 4 is in close contact with the top of the rubber pad one 11, then the screw two 16 is screwed into the fixing seat 15, at this time the screw two 16 can fasten the lower pressing plate 13, so that the base 10 and the lower pressing plate 13 can clamp the multilayer flexible circuit board 4, and under the action of the rubber pad one 11 and the rubber pad two 14, the multilayer flexible circuit board 4 can be prevented from sliding, thereby further fixing the multilayer flexible circuit board 4, ensuring that the multilayer flexible circuit board 4 is not easy to fall off when it is accidentally pulled, thereby reducing the maintenance frequency of the multilayer flexible circuit board 4.

[0062] The embodiments of the present application are described above in combination with the drawings, the embodiments and the features in the embodiments in the present application can be combined with each other without conflict, the present application is not limited to the above-mentioned specific embodiments, the above-mentioned specific embodiments are only illustrative but not restrictive, the ordinary skilled in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, all of which belong to the protection of the present application.

Claims

1. A multilayer flexible wiring board having a blind via structure, characterized by, Include: The circuit board (1), the top of the circuit board (1) is fixedly installed with a mounting seat (2), the top of the mounting seat (2) is provided with a mounting groove (3), one side of the mounting seat (2) is provided with a plurality of flexible printed circuit boards (4), the flexible printed circuit board (4) is fixedly installed with a contact block (5) on the top and in the mounting groove (3), the mounting seat (2) is rotatably installed with a rotating plate (7), the bottom of the rotating plate (7) is provided with a contact groove (8), the top of the rotating plate (7) and on both sides of the contact groove (8) are screw installed with a screw (9), the bottom end of the screw (9) extends into the mounting seat (2); The base (10) is fixedly installed on the top of the circuit board (1) and on one side of the mounting seat (2), the top of the base (10) is fixedly installed with a rubber pad (11), one side of the base (10) is fixedly installed with a mounting bracket (12), the top of the mounting bracket (12) is rotatably installed with a pressing plate (13), the bottom of the pressing plate (13) is fixedly installed with a rubber pad (14), the other side of the base (10) is fixedly installed with a fixed seat (15), the pressing plate (13) is screw installed with a screw (16), the bottom end of the screw (16) extends into the fixed seat (15).

2. The multilayer flexible wiring board having a blind via structure according to claim 1, wherein The circuit board (1) is provided with a plurality of blind holes (6).

3. The multilayer flexible wiring board having a blind via structure according to claim 1, wherein The bottom end of the screw (9) is screw connected with the mounting seat (2), and the bottom end of the screw (16) is screw connected with the fixed seat (15).

4. The multilayer flexible wiring board having a blind via structure according to claim 1, wherein The fixed seat (15) is fixed with the top of the circuit board (1), and the mounting bracket (12) is fixed with the top of the circuit board (1).

5. The multilayer flexible wiring board having a blind via structure according to claim 1, wherein The contact groove (8) is engaged with the contact block (5).

6. The multilayer flexible wiring board having a blind via structure according to claim 1, wherein The plurality of flexible printed circuit boards (4) are located between the rubber pad (11) and the rubber pad (14).

7. The multilayer flexible wiring board having a blind via structure according to claim 1, wherein The base (10) and the mounting bracket (12) are integrally formed.

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