A double-layer high-strength flexible circuit board with internal reinforcement mechanism

Abstract

This invention discloses a double-layer high-strength flexible circuit board with an internal reinforcement mechanism, comprising two sets of flexible circuit boards, with a heat dissipation assembly between the two sets of flexible circuit boards. The heat dissipation assembly includes a conductive element, a heat-conducting element, and a connecting post. The conductive element includes a copper plate, which is fixed to the back of the flexible circuit board. A rubber pad is fixed to the side of the copper plate away from the flexible circuit board, and a groove is formed on the side of the copper plate away from the rubber pad. A through hole is formed on the copper plate, and a heat-conducting sheet is fixed to the side of the copper plate away from the flexible circuit board through the rubber pad. When the flexible circuit board is bent, it can compress the heat-conducting element, causing the heat-conducting sheet to bend between the two heat-conducting sheets without affecting the other set of flexible circuit boards. This avoids forced compression of the other set of flexible circuit boards, which could potentially damage the flexible circuit board.

Description

Technical Field

[0001] This invention relates to the field of double-layer high-strength flexible circuit boards, and particularly to a double-layer high-strength flexible circuit board with an internal reinforcement mechanism. Background Technology

[0002] Flexible circuit boards (PCBs) are highly reliable and extremely flexible printed circuit boards made with polyimide or polyester film as the substrate. They are characterized by high wiring density, light weight, thinness, and good bendability. Double-layer flexible circuit boards are two flexible circuit boards used in combination.

[0003] Because electronic components need to be installed on both sides when using double-layer flexible circuit boards, they cannot have a reinforcing plate added to the back to increase their strength and toughness like single-layer circuit boards. Reinforcing structures can only be added from the inside of the double-layer circuit board. However, adding reinforcement structures from the inside reduces the air permeability and heat dissipation of the circuit boards on both sides, resulting in inadequate heat dissipation during use and causing high temperatures that affect the circuit board's performance. Currently, the heat dissipation structure used in double-layer high-strength flexible circuit boards typically uses heat sink fins connected to the double-layer high-strength flexible circuit board for heat dissipation. However, this results in one set of flexible circuit boards being squeezed by the heat sink fins when one layer is bent, causing the other set of flexible circuit boards to deform under pressure, potentially damaging it. Therefore, we propose a double-layer high-strength flexible circuit board with an internal reinforcing mechanism. Summary of the Invention

[0004] The main objective of this invention is to provide a double-layer high-strength flexible circuit board with an internal reinforcement mechanism, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention proposes a double-layer high-strength flexible circuit board with an internal reinforcement mechanism, comprising two sets of flexible circuit boards, wherein a heat dissipation assembly is disposed between the two sets of flexible circuit boards, and the heat dissipation assembly includes:

[0006] A conductive element is provided on the back of the flexible circuit board;

[0007] A heat-conducting component is provided on the side of the conductive component away from the flexible circuit board;

[0008] A connecting post is fixed between the two sets of flexible circuit boards.

[0009] Optionally, the heat dissipation assembly includes a conductive element, a heat-conducting element, and a connecting post. The conductive element includes a copper plate, which is fixed to the back of the flexible circuit board. A rubber pad is fixed to the side of the copper plate away from the flexible circuit board, and a groove is formed on the side of the copper plate away from the rubber pad. A through hole is formed on the copper plate. By contacting the back of the flexible circuit board, the copper plate can absorb the heat generated when the flexible circuit board is working. External air can enter the groove on the copper plate through the through hole, further improving the heat dissipation effect of the flexible circuit board.

[0010] Optionally, the heat-conducting component includes a heat-conducting sheet one, which is fixed to the side of the copper plate away from the flexible circuit board through a rubber pad. A heat-conducting sheet two is hinged to the side of the heat-conducting sheet one away from the copper plate. A torsion spring one is fixed to the side of the heat-conducting sheet one, and the end of the torsion spring one away from the heat-conducting sheet one is hinged to the heat-conducting sheet two. Both the heat-conducting sheet one and the heat-conducting sheet two are made of copper and have good thermal conductivity. The heat-conducting sheet one and the heat-conducting sheet two can swing together, so as not to affect the normal bending of the flexible circuit board.

[0011] Optionally, the surface of the flexible circuit board is coated with a wear-resistant coating, which can effectively improve the wear resistance of the flexible circuit board.

[0012] Optionally, the top of the rubber pad has a groove, and a reinforcing plate is placed inside the groove on the top of the rubber pad. The reinforcing plate is fixed to the back of the flexible circuit board by an adhesive. The reinforcing plate is made of iron sheet, and the groove on the reinforcing plate allows the reinforcing plate to swing to a certain extent.

[0013] Optionally, the conductive and heat-conducting components are provided in two sets, and the two sets of conductive and heat-conducting components are symmetrically arranged with the center line of the connecting column as the axis of symmetry, and the two sets of heat-conducting components are hinged to each other.

[0014] Optionally, the connecting post comprises a sliding post, a fixed post, and a spring. The sliding post is fixed to the back of the flexible circuit board, passes through the fixed post, and is slidably connected to the fixed post. A spring is fixed on the inner wall of the fixed post, and the end of the spring away from the fixed post is fixed to the sliding post. Control components are provided on the sliding post and inside the fixed post.

[0015] Optionally, the control component includes a push rod that passes through and is slidably connected to a slide column. A fixing plate is fixed on the inner wall of the slide column. A stop rod passes through the fixing plate and is slidably connected to the stop rod. A support rod is hinged to the top of the stop rod. The end of the support rod away from the stop rod is hinged to the push rod. When the push rod is pushed to move closer to the slide column, the push rod pushes the stop rod downward through the support rod.

[0016] Optionally, the sliding column is penetrated by the locking block and hinged to the locking block. A second torsion spring is fixed to the side of the sliding column. The end of the second torsion spring away from the sliding column is fixed to the top of the locking block. A stop block is fixed to the bottom of the sliding column. A locking tooth is fixed to the inner wall of the fixed column. The locking block can lock onto the locking tooth to limit the sliding column. Under the action of the stop block, the locking block can only swing upward at the position hinged to the sliding column.

[0017] Optionally, the locking block, torsion spring II, and stop block are each provided in two sets, and the two sets of locking blocks, torsion spring II, and stop blocks are symmetrically arranged with the center line of the sliding column as the axis of symmetry. A pull rope is fixed between the two sets of locking blocks. When the abutment moves downward, the abutment can abut against the pull rope, pulling the locking block to swing upward at the position where it is hinged to the sliding column, so that the locking block separates from the locking teeth, thereby releasing the limitation on the sliding column.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The double-layer high-strength flexible circuit board with internal reinforcement mechanism can squeeze the heat-conducting component when the flexible circuit board is bent, so that the heat-conducting sheet one and the heat-conducting sheet two bend together. This will not affect the other flexible circuit board and can avoid the forced squeezing of the other flexible circuit board, which may cause damage to the flexible circuit board.

[0020] (2) When the double-layer high-strength flexible circuit board with internal reinforcement mechanism needs to be installed in a relatively narrow area, the distance between the two sets of flexible circuit boards can be adjusted by pressing the push rod. The push rod pushes the abutment rod downward through the support rod. The abutment rod abuts against the pull rope, so that the pull rope pulls the locking block, so that the locking block swings upward at the position of hinge with the sliding column. The locking block is no longer locked on the locking teeth, so that the sliding column can be pulled upward or directly pushed downward to be sent into the fixed column, thus completing the adjustment of the distance between the two sets of flexible circuit boards.

[0021] (3) The double-layer high-strength flexible circuit board of the internal reinforcement mechanism can be adjusted by simply releasing the push rod. The push rod will no longer exert downward pressure on the pull rope. Under the action of the second torsion spring, the locking block will rotate and reset at the position of hinge with the slide column. The locking block will then lock onto the locking teeth to limit the slide column.

[0022] (4) The double-layer high-strength flexible circuit board with internal reinforcement mechanism can absorb the heat generated by the flexible circuit board during operation by contacting the back of the copper plate with the flexible circuit board. External gas can enter the groove on the copper plate through the through hole, further improving the heat dissipation effect of the flexible circuit board. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall device of the present invention;

[0025] Figure 2 This is a cross-sectional front view of the present invention;

[0026] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure of A in the middle;

[0027] Figure 4 For the present invention Figure 2 Schematic diagram of the enlarged structure of B;

[0028] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged C-shaped structure;

[0029] Figure 6 This is a schematic diagram of the reinforcing plate structure of the present invention;

[0030] Figure 7 This is a schematic diagram of a partial cross-sectional side view of the sliding column of the present invention;

[0031] Figure 8 This is a schematic diagram of the conductive element structure of the present invention.

[0032] Explanation of reference numerals: 1. Flexible circuit board; 2. Heat dissipation component; 21. Conductive component; 22. Heat-conducting component; 23. Connecting post; 211. Copper plate; 212. Rubber pad; 221. Heat-conducting sheet one; 222. Heat-conducting sheet two; 223. Torsion spring one; 231. Sliding column; 232. Fixing post; 233. Spring; 3. Reinforcing plate; 4. Control component; 41. Push rod; 42. Fixing plate; 43. Support rod; 44. Support rod; 45. Locking block; 46. Torsion spring two; 47. Stop block; 48. Locking tooth; 5. Adhesive; 6. Wear-resistant coating.

[0033] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0036] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0037] Reference Figures 1 to 8 The present invention proposes a double-layer high-strength flexible circuit board with an internal reinforcement mechanism, including a flexible circuit board 1, which is provided in two sets, and a heat dissipation component 2 is provided between the two sets of flexible circuit boards 1.

[0038] In this embodiment of the invention, the heat dissipation component 2 includes:

[0039] Conductor 21: A conductor 21 is provided on the back of the flexible circuit board 1;

[0040] The heat-conducting component 22 is provided on the side of the conductive component 21 away from the flexible circuit board 1;

[0041] Connecting post 23: A connecting post 23 is fixed between the two sets of flexible circuit boards 1.

[0042] Specifically, the heat dissipation component 2 includes a conductive element 21, a heat-conducting element 22, and a connecting post 23. The conductive element 21 includes a copper plate 211, which is fixed to the back of the flexible circuit board 1. A rubber pad 212 is fixed to the side of the copper plate 211 away from the flexible circuit board 1. A groove is formed on the side of the copper plate 211 away from the rubber pad 212. A through hole is formed on the copper plate 211. By contacting the back of the flexible circuit board 1 with the copper plate 211, the heat generated by the flexible circuit board 1 during operation can be absorbed. External air can enter the groove on the copper plate 211 through the through hole, further improving the heat dissipation effect of the flexible circuit board 1.

[0043] In one embodiment of the present invention, the heat-conducting component 22 includes a heat-conducting sheet 221, which is fixed to the side of the copper plate 211 away from the flexible circuit board 1 through the rubber pad 212. A heat-conducting sheet 222 is hinged to the side of the heat-conducting sheet 221 away from the copper plate 211. A torsion spring 223 is fixed to the side of the heat-conducting sheet 221. One end of the torsion spring 223 away from the heat-conducting sheet 221 is hinged to the heat-conducting sheet 222. Both the heat-conducting sheet 221 and the heat-conducting sheet 222 are made of copper and have good thermal conductivity. The heat-conducting sheet 221 and the heat-conducting sheet 222 can swing together, so as not to affect the normal bending of the flexible circuit board 1.

[0044] Please continue reading. Figure 1-8 The surface of the flexible circuit board 1 is coated with a wear-resistant coating 6, which can effectively improve the wear resistance of the flexible circuit board 1.

[0045] In addition, a groove is provided on the top of the rubber pad 212, and a reinforcing plate 3 is placed inside the groove on the top of the rubber pad 212. The reinforcing plate 3 is fixed to the back of the flexible circuit board 1 by adhesive 5. The reinforcing plate 3 is made of iron.

[0046] In order not to affect the normal use of the flexible circuit board 1, the reinforcing plate 3 is provided with a groove, so that the reinforcing plate 3 can swing to a certain extent.

[0047] In the embodiments of the present invention, two sets of conductive elements 21 and heat-conducting elements 22 are provided, and the two sets of conductive elements 21 and heat-conducting elements 22 are symmetrically arranged with the center line of the connecting column 23 as the axis of symmetry, and the two sets of heat-conducting elements 22 are hinged to each other.

[0048] In an embodiment of the present invention, the connecting post 23 comprises a sliding post 231, a fixed post 232, and a spring 233. The sliding post 231 is fixed to the back of the flexible circuit board 1. The sliding post 231 passes through the fixed post 232 and is slidably connected to the fixed post 232. The spring 233 is fixed on the inner wall of the fixed post 232. The end of the spring 233 away from the fixed post 232 is fixed to the sliding post 231. A control component 4 is provided on the sliding post 231 and inside the fixed post 232.

[0049] In an embodiment of the present invention, the control component 4 includes a push rod 41, which passes through and is slidably connected to the slide column 231. A fixing plate 42 is fixed on the inner wall of the slide column 231. The fixing plate 42 is penetrated by a stop rod 43 and is slidably connected to the stop rod 43. A support rod 44 is hinged to the top of the stop rod 43. The end of the support rod 44 away from the stop rod 43 is hinged to the push rod 41. When the push rod 41 is pushed to move closer to the slide column 231, the push rod 41 pushes the stop rod 43 downward through the support rod 44.

[0050] In an embodiment of the present invention, the sliding column 231 is penetrated by the locking block 45 and is hinged to the locking block 45. A second torsion spring 46 is fixed to the side of the sliding column 231. The end of the second torsion spring 46 away from the sliding column 231 is fixed to the top of the locking block 45. A stop block 47 is fixed to the bottom of the sliding column 231. A locking tooth 48 is fixed to the inner wall of the fixing column 232. The locking block 45 can be locked on the locking tooth 48 to limit the sliding column 231. Under the action of the stop block 47, the locking block 45 can only swing upward at the position hinged to the sliding column 231.

[0051] In the embodiments of the present invention, two sets of locking blocks 45, torsion springs 46 and stop blocks 47 are provided, and the two sets of locking blocks 45, torsion springs 46 and stop blocks 47 are symmetrically arranged about the center line of the sliding column 231 as the axis of symmetry. A pull rope is fixed between the two sets of locking blocks 45. When the abutment rod 43 moves downward, the abutment rod 43 can abut against the pull rope, pulling the locking block 45 to swing upward at the position hinged with the sliding column 231, so that the locking block 45 separates from the locking teeth 48, thereby releasing the restriction on the sliding column 231.

[0052] In this invention, during normal use, the heat generated by the flexible circuit board 1 can be conducted through the copper plate 211 to the heat-conducting sheet 221 and the heat-conducting sheet 222 for heat dissipation. External airflow enters the groove on the copper plate 211 through the through hole, improving the overall heat dissipation of the flexible circuit board 1. When the flexible circuit board 1 is bent, it can squeeze the heat-conducting element 22, causing the heat-conducting sheet 221 and the heat-conducting sheet 222 to bend. This will not affect the other set of flexible circuit boards 1, thus avoiding forced compression of the other set of flexible circuit boards 1, which could potentially lead to damage to the flexible circuit board 1.

[0053] When two sets of flexible circuit boards 1 need to be installed in a relatively narrow area, the distance between the two sets of flexible circuit boards 1 can be adjusted by pressing the push rod 41. The push rod 41 pushes the abutment rod 43 downward through the support rod 44. The abutment rod 43 abuts against the pull rope, causing the pull rope to pull the locking block 45. The locking block 45 swings upward at the position hinged with the slide column 231. The locking block 45 is no longer locked on the locking tooth 48, which can then pull the slide column 231 upward or directly push the slide column 231 downward into the fixed column 232, thus completing the adjustment of the distance between the two sets of flexible circuit boards 1. After the adjustment is completed, simply release the push rod 41. The abutment rod 43 no longer exerts downward pressure on the pull rope. Under the action of the torsion spring 46, the locking block 45 rotates back to the position hinged with the slide column 231, and the locking block 45 is locked on the locking tooth 48 again, limiting the slide column 231.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A double-layer high-strength flexible circuit board with an internal reinforcement mechanism, comprising a flexible circuit board (1), wherein the flexible circuit board (1) is provided with two sets, characterized in that: A heat dissipation assembly (2) is provided between the two sets of flexible circuit boards (1), the heat dissipation assembly (2) comprising: Conductor (21), the flexible circuit board (1) is provided with a conductor (21) on the back. A heat-conducting component (22) is provided on the side of the conductive component (21) away from the flexible circuit board (1). A connecting post (23) is fixed between the two sets of flexible circuit boards (1). The conductive component (21) includes a copper plate (211), which is fixed to the back of the flexible circuit board (1). A rubber pad (212) is fixed to the side of the copper plate (211) away from the flexible circuit board (1). A groove is provided on the side of the copper plate (211) away from the rubber pad (212). A through hole is provided on the copper plate (211). The heat-conducting component (22) includes a heat-conducting sheet (221), which is fixed to the side of the copper plate (211) away from the flexible circuit board (1) through the rubber pad (212). The side of the heat-conducting sheet (221) away from the copper plate (211) is hinged. A second heat-conducting sheet (222) is connected to the heat-conducting sheet (221). A torsion spring (223) is fixed to the side of the heat-conducting sheet (221). The end of the torsion spring (223) away from the heat-conducting sheet (221) is hinged to the second heat-conducting sheet (222). The surface of the flexible circuit board (1) is coated with a wear-resistant coating (6). A groove is provided on the top of the rubber pad (212). A reinforcing plate (3) is placed inside the groove on the top of the rubber pad (212). The reinforcing plate (3) is fixed to the back of the flexible circuit board (1) by an adhesive (5). A groove is provided on the reinforcing plate (3). Two sets of conductive elements (21) and heat-conducting elements (22) are provided, and the two sets of conductive elements (21) and heat-conducting elements (22) are symmetrical about the center line of the connecting column (23). The two sets of heat-conducting components (22) are symmetrically arranged and hinged to each other. The connecting column (23) consists of a sliding column (231), a fixed column (232), and a spring (233). The sliding column (231) is fixed to the back of the flexible circuit board (1). The sliding column (231) passes through the fixed column (232) and is slidably connected to the fixed column (232). A spring (233) is fixed on the inner wall of the fixed column (232). The end of the spring (233) away from the fixed column (232) is fixed to the sliding column (231). A control component (4) is provided on the sliding column (231) and inside the fixed column (232). The control component (4) includes a push rod (41). The push rod (41) passes through the sliding column (231) and is slidably connected to the sliding column (232). The column (231) is slidably connected. A fixing plate (42) is fixed on the inner wall of the column (231). The fixing plate (42) is penetrated by a push rod (43) and is slidably connected to the push rod (43). A support rod (44) is hinged to the top of the push rod (43). The end of the support rod (44) away from the push rod (43) is hinged to the push rod (41). The column (231) is penetrated by a locking block (45) and is hinged to the locking block (45). A torsion spring (46) is fixed to the side of the column (231). The end of the torsion spring (46) away from the column (231) is fixed to the top of the locking block (45). A stop block (47) is fixed to the bottom of the column (231). A locking tooth (48) is fixed on the inner wall of the fixing column (232).The locking block (45), torsion spring II (46), and stop block (47) are each provided in two sets, and the two sets of locking blocks (45), torsion spring II (46), and stop blocks (47) are symmetrically arranged with the center line of the sliding column (231) as the axis of symmetry. A pull rope is fixed between the two sets of locking blocks (45).

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