CN216700458U

CN216700458U - Flexible circuit board

Info

Publication number: CN216700458U
Application number: CN202122985426.5U
Authority: CN
Inventors: 陈凯
Original assignee: Shenzhen Benqiang Circuit Co ltd
Current assignee: Shenzhen Benqiang Circuit Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-06-07
Anticipated expiration: 2031-11-30

Abstract

The utility model discloses a bendable circuit board which comprises a connecting block, wherein through grooves are formed in the left part and the right part of the upper end of the connecting block, a plurality of mounting holes distributed in an annular array are formed in the left part and the right part of the front end of the connecting block, connecting shafts are arranged in the left part and the right part of the rear end of the connecting block in an inserting mode, the front ends of the two connecting shafts extend to the front end of the connecting block, fixed blocks are sleeved on the front parts of the outer cylindrical surfaces of the two connecting shafts, the two fixed blocks are distributed in a bilaterally symmetrical mode, and fixing parts are arranged at the front ends of the two fixed blocks. According to the bendable circuit board, the connecting block, the fixing block and the fixing part are arranged to be matched together, so that the circuit board can be folded and installed, the space required by installation is reduced, the flexibility of the circuit board is improved by arranging the high-density polyethylene layer, and the circuit board can be bent to a certain degree in the using process.

Description

Flexible circuit board

Technical Field

The utility model relates to the technical field of circuit boards, in particular to a bendable circuit board.

Background

The circuit board has the name: the circuit board makes the circuit miniaturized, visualized, plays important role to the batch production of fixed circuit and the optimization of electrical apparatus overall arrangement.

The prior circuit board has the following disadvantages: 1. most of the existing circuit boards cannot be folded and installed, so that the circuit boards need to occupy a large amount of space and have low practicability; 2. most of the existing circuit boards are hard boards, the flexibility of the circuit boards is poor, the circuit boards are easy to damage during installation, and meanwhile, the heat dissipation effect of the circuit boards is poor.

SUMMERY OF THE UTILITY MODEL

The main objective of the present invention is to provide a flexible circuit board, which can effectively solve the problems in the background art.

In order to realize the purpose, the utility model adopts the technical scheme that:

a bendable circuit board comprises a connecting block, wherein the left part of the upper end and the right part of the upper end of the connecting block are both provided with a through groove, the left part of the front end and the right part of the front end of the connecting block are both provided with a plurality of mounting holes distributed in an annular array, connecting shafts are inserted and installed at the left part and the right part of the rear end of the connecting block, the front ends of the two connecting shafts extend to the front end of the connecting block, fixed blocks are sleeved at the front parts of the outer cylindrical surfaces of the two connecting shafts, the two fixed blocks are distributed in bilateral symmetry, fixed parts are arranged at the front ends of the two fixed blocks, the fixed part extends into the mounting hole, the middle parts of the outer cylindrical surfaces of the two connecting shafts are movably sleeved with rotating blocks, the two rotating blocks are respectively movably connected with the two through grooves, circuit boards are mounted at the ends, far away from each other, of the two rotating blocks, and four corners of the upper ends of the two circuit boards are respectively provided with first through holes;

the circuit board comprises a circuit main body layer, wherein the upper end and the lower end of the circuit main body layer are respectively provided with a first adhesion layer and a second adhesion layer, the upper end of the first adhesion layer is provided with a high-density polyethylene layer, and the lower end of the second adhesion layer is provided with a heat-conducting silica gel cloth layer.

Preferably, the front end of the fixing block is provided with a second through hole, the middle part of the second through hole is provided with a circular groove, the upper wall of the circular groove is provided with a sliding groove, and the rear part of the circular groove is provided with an annular groove

Preferably, the annular groove is communicated with the sliding groove, and the diameter of the annular groove is larger than that of the circular groove.

Preferably, the fixing part comprises a fixing rod, the fixing rod is movably connected in the second through hole and the mounting hole respectively, a clamping ring is sleeved at the rear part of the outer cylindrical surface of the fixing rod, a clamping block is mounted at the upper end of the clamping ring, and a spring is sleeved on the outer cylindrical surface of the fixing rod.

Preferably, the spring is located between the front end of the clamping ring and the front wall of the circular groove, the clamping block is movably connected in the annular groove, and the clamping block is matched with the sliding groove.

Preferably, the clamping block is movably connected in the annular groove and matched with the sliding groove.

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

1. according to the bendable circuit board, the connecting block, the fixing block and the fixing part are arranged to be matched together, so that the circuit board can be folded and installed, the space required by installation is reduced, the fixing rod is pulled out of the installation hole during installation, then the two circuit boards are rotated by ninety degrees respectively, then the fixing rod is loosened, the fixing rod falls into the installation hole, the circuit board can be fixed, and the practicability is high;

2. according to the bendable circuit board, the flexibility of the circuit board is improved by arranging the high-density polyethylene layer, so that the circuit board can be bent to a certain degree in the use process, the circuit board is prevented from being broken due to overlarge force during installation, the thermal resistance between the electronic component and the radiator can be reduced by arranging the heat-conducting silica gel cloth layer, the heat conductivity is good, and the heat dissipation effect of the circuit board is improved.

Drawings

FIG. 1 is a schematic view of an overall structure of a flexible printed circuit board according to the present invention;

FIG. 2 is a schematic view of the whole structure of a connection block of a flexible circuit board according to the present invention;

fig. 3 is a sectional view of a fixing block of a bendable circuit board according to the present invention;

FIG. 4 is a schematic view of the entire structure of a fixing member of a flexible circuit board according to the present invention;

FIG. 5 is a diagram illustrating an effect of the flexible printed circuit board according to the present invention;

fig. 6 is a cross-sectional view of a circuit board of a flexible circuit board according to the present invention.

In the figure: 1. a circuit board; 2. a first through hole; 3. a connecting shaft; 4. connecting blocks; 5. rotating the block; 6. a through groove; 7. mounting holes; 8. a fixed block; 9. a fixing member; 81. a second through hole; 82. a chute; 83. a circular groove; 84. an annular groove; 91. fixing the rod; 92. a snap ring; 93. a clamping block; 94. a spring; 11. a high density polyethylene layer; 12. a first adhesive layer; 13. a circuit body layer; 14. a heat-conducting silica gel cloth layer; 15. and a second adhesive layer.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-6, a flexible circuit board comprises a connecting block 4, through grooves 6 are respectively formed in the left part and the right part of the upper end of the connecting block 4, a plurality of mounting holes 7 distributed in an annular array are respectively formed in the left part and the right part of the front end of the connecting block 4, connecting shafts 3 are respectively installed in the left part and the right part of the rear end of the connecting block 4 in an inserting manner, the front ends of the two connecting shafts 3 extend to the front end of the connecting block 4, fixing blocks 8 are respectively sleeved on the front parts of the outer cylindrical surfaces of the two connecting shafts 3, the two fixing blocks 8 are symmetrically distributed in a left-right direction, fixing parts 9 are respectively arranged at the front ends of the two fixing blocks 8, the fixing parts 9 extend into the mounting holes 7, rotating blocks 5 are movably sleeved in the middle parts of the outer cylindrical surfaces of the two connecting shafts 3, the two rotating blocks 5 are respectively movably connected with the two through grooves 6, a circuit board 1 is installed at one end of the two rotating blocks 5, which are far away from each other, four corners of the upper ends of the two circuit boards 1 are provided with first through holes 2;

the circuit board 1 comprises a circuit main body layer 13, a first adhesion layer 12 and a second adhesion layer 15 are respectively arranged at the upper end and the lower end of the circuit main body layer 13, a high-density polyethylene layer 11 is arranged at the upper end of the first adhesion layer 12, and a heat-conducting silica gel cloth layer 14 is arranged at the lower end of the second adhesion layer 15.

The front end of the fixing block 8 is provided with a second through hole 81, the middle part of the second through hole 81 is provided with a circular groove 83, the upper wall of the circular groove 83 is provided with a sliding groove 82, the rear part of the circular groove 83 is provided with an annular groove 84, and the diameter of the circular groove 83 is larger than that of the second through hole 81.

The annular groove 84 communicates with the slide groove 82, the annular groove 84 has a diameter larger than that of the circular groove 83, and the annular groove 84 is adapted to abut against the latch 93.

The fixing part 9 comprises a fixing rod 91, the fixing rod 91 is movably connected into the second through hole 81 and the mounting hole 7 respectively, the rear portion of the outer cylindrical surface of the fixing rod 91 is sleeved with a clamping ring 92, the upper end of the clamping ring 92 is provided with a clamping block 93, the outer cylindrical surface of the fixing rod 91 is sleeved with a spring 94, and the rear end of the fixing rod 91 is spherical.

The spring 94 is located between the front end of the snap ring 92 and the front wall of the circular groove 83, the spring 94 being in a reset state.

The latch 93 is movably connected in the annular groove 84, the latch 93 is matched with the sliding groove 82, and after the latch 93 is abutted in the annular groove 84, the fixing rod 91 cannot move back and forth.

It should be noted that, the utility model is a bendable circuit board, the circuit board 1 can be folded and installed by arranging the connecting block 4, the fixing block 8 and the fixing part 9 to cooperate together, so as to reduce the space required for installation, when in installation, the fixing rod 91 is pulled out from the installation hole 7, then the two circuit boards 1 are respectively rotated by ninety degrees, then the fixing rod 91 is loosened, the fixing rod 91 is moved backwards by the elasticity of the spring 94, meanwhile, the band-pass clamping block 93 is moved backwards into the annular groove 84 along the sliding groove 82, then the fixing rod 91 is rotated to enable the clamping block 93 to abut against the inner wall of the annular groove 84, so as to complete the fixation of the circuit board 1, the flexibility of the circuit board 1 is improved by arranging the high-density polyethylene layer 11, so that the circuit board 1 can be bent to a certain degree in the using process, the circuit board 1 is prevented from being broken due to overlarge force when in installation, and meanwhile, the high-density polyethylene layer 11 has a certain flashing effect, the thermal resistance between the electronic component and the heat sink can be reduced by arranging the thermal conductive silica gel cloth layer 14, so that the heat conduction performance is good, and the heat dissipation effect of the circuit board 1 is improved.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A flexible circuit board, includes connecting block (4), its characterized in that: the connecting device is characterized in that through grooves (6) are formed in the left portion of the upper end and the right portion of the upper end of each connecting block (4), a plurality of mounting holes (7) distributed in an annular array are formed in the left portion of the front end of each connecting block (4), connecting shafts (3) are installed in the left portion of the rear end and the right portion of the rear end of each connecting block (4) in an inserting mode, the front ends of the two connecting shafts (3) extend to the front end of each connecting block (4), fixing blocks (8) are sleeved on the front portions of the outer cylindrical surfaces of the two connecting shafts (3), the two fixing blocks (8) are symmetrically distributed in the left-right mode, fixing parts (9) are arranged at the front ends of the two fixing blocks (8), the fixing parts (9) extend into the mounting holes (7), rotating blocks (5) are movably sleeved in the middle portions of the outer cylindrical surfaces of the two connecting shafts (3), and the two rotating blocks (5) are movably connected with the two through grooves (6) respectively, circuit boards (1) are mounted at the ends, far away from each other, of the two rotating blocks (5), and first through holes (2) are formed in four corners of the upper ends of the two circuit boards (1);

circuit board (1) includes circuit main part layer (13), circuit main part layer (13) upper end and lower extreme are provided with adhesion layer (12) and No. two adhesion layers (15) respectively, the upper end of adhesion layer (12) is provided with high density polyethylene layer (11), the lower extreme of No. two adhesion layers (15) is provided with heat conduction silica gel layer (14).

2. A flexible circuit board according to claim 1, wherein: the front end of the fixing block (8) is provided with a second through hole (81), the middle of the second through hole (81) is provided with a circular groove (83), the upper wall of the circular groove (83) is provided with a sliding groove (82), and the rear part of the circular groove (83) is provided with an annular groove (84).

3. A flexible circuit board according to claim 2, wherein: the annular groove (84) is communicated with the sliding groove (82), and the diameter of the annular groove (84) is larger than that of the circular groove (83).

4. A flexible circuit board according to claim 2, wherein: fixed part (9) include dead lever (91), dead lever (91) swing joint respectively is in second through-hole (81) and mounting hole (7), the outer face of cylinder rear portion cover of dead lever (91) has snap ring (92), fixture block (93) are installed to the upper end of snap ring (92), the outer face of cylinder cover of dead lever (91) has spring (94).

5. The flexible circuit board of claim 4, wherein: the spring (94) is located between the front end of the snap ring (92) and the front wall of the circular groove (83).

6. The flexible circuit board of claim 4, wherein: the clamping block (93) is movably connected in the annular groove (84), and the clamping block (93) is matched with the sliding groove (82).