Rigid-flex board

Abstract

The invention discloses a rigid-flex board, and belongs to the technical field of integrated circuit manufacturing, a protection assembly comprises a plurality of sets of protection parts and elastic parts, the elastic parts are movably clamped to the upper ends and the lower ends of the two adjacent sets of protection parts, and the two ends of each elastic part are movably connected with the protection parts on the corresponding sides respectively; wrapping type protection is formed on the flexible circuit board through the combination of the plurality of groups of protection pieces and the elastic pieces; through the combination of wrapping of the protection parts and buffering of the elastic parts, the bending stress of the flexible circuit board can be dispersed to the contact areas of the multiple sets of protection parts and the elastic parts, line breakage caused by local stress concentration is avoided, and the service life of the flexible circuit board is remarkably prolonged; the elastic piece is made of a flexible elastic material and is movably clamped with the protective piece, so that the bending degree of freedom of the flexible circuit board is not limited, and the elastic piece can synchronously deform along with the bending action to adapt to bending scenes of different angles.

Description

Technical Field

[0001] This invention belongs to the field of integrated circuit manufacturing technology, and particularly relates to a rigid-flex board. Background Technology

[0002] Rigid-flex PCBs are circuit boards that combine flexible and rigid circuit boards through lamination and other processes according to relevant technological requirements. They possess both FPC and PCB characteristics. Rigid-flex PCBs require bending and flipping during use, and because the FPC in a rigid-flex PCB is relatively thin, cracking or even breakage can easily occur at the junction of the rigid and flexible boards or at bending points. Traditional protection solutions cannot accommodate the bending motion of flexible circuit boards, or the protective structure does not fit the circuit board well enough to effectively disperse bending stress. Moreover, most protective structures are one-piece designs, which cannot accommodate flexible circuit boards of different lengths, and are difficult to disassemble and adjust after installation, increasing the maintenance cost of rigid-flex PCBs. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the present invention provides a rigid-flex board, which at least partially solves the problems mentioned in the background art.

[0004] The technical solution adopted in this invention is as follows: a rigid-flex board, comprising a rigid circuit board, a flexible circuit board and a protective component, wherein the flexible circuit board is connected to the rigid circuit board and the protective component is movably sleeved on the flexible circuit board; The protective component includes several sets of protective components and elastic components. The elastic components are movably engaged with the upper and lower ends of two adjacent sets of protective components, and the two ends of the elastic components are movably connected to the protective components on the corresponding sides. The combination of several sets of protective components and the elastic components forms a wrap-around protection for the flexible circuit board.

[0005] The protective component includes a first connector and a second connector that cooperate with each other, and the first connector and the second connector are detachably connected.

[0006] The first connector has an insertion hole on the side opposite to the second connector, and the upper wall of the first connector has a fixing hole, which is connected to the insertion hole.

[0007] The second connector has a plug rod installed on the side opposite to the first connector. The plug rod is matched with the plug hole. A connecting buckle is movably installed on the upper wall of the plug rod. The lower end of the connecting buckle is located inside the plug rod and is connected by a spring. When the connecting buckle is pressed down, the spring is compressed. When the external force is removed, the spring pushes the connecting buckle to rise. The connecting buckle is matched with the fixing hole.

[0008] The elastic member has a locking device installed at both ends, and the upper and lower ends of the protective member are respectively provided with slots that are adapted to the structure of the locking device. The elastic member can be movably engaged with the protective member through the cooperation of the locking device and the slot.

[0009] Furthermore, multiple sets of flexible anti-slip components are installed on the inner side of the protective component to fix the inner side of the protective component to the flexible circuit board.

[0010] Furthermore, the protective component and the clip are made of insulating plastic, and the elastic component is made of flexible elastic material.

[0011] The beneficial effects of the present invention after adopting the above structure are as follows: (1) By combining protective wrapping and elastic buffer, the bending stress of the flexible circuit board can be dispersed to the contact area of ​​multiple sets of protective and elastic components, avoiding circuit breakage caused by local stress concentration and significantly extending the service life of the flexible circuit board. (2) The elastic component is made of flexible elastic material and is connected to the protective component in a movable snap-fit ​​manner. It does not restrict the bending freedom of the flexible circuit board, and can deform synchronously with the bending action to adapt to bending scenarios at different angles. (3) The first and second connecting parts of the protective component are connected by a plug and a spring to achieve a detachable connection, which can be quickly put on or removed from the flexible circuit board and is suitable for flexible circuit boards of different lengths. (4) The elastic component and the protective component are connected by a snap-fit ​​mechanism, which makes it easy to replace the damaged elastic component or the protective component separately and reduces maintenance costs; (5) The flexible anti-slip part on the inner side of the protective component improves the fit with the flexible circuit board, prevents the protective component from shifting during use, and avoids scratching the surface insulation layer of the flexible circuit board. (6) The protective components can move freely along the length of the flexible circuit board, and can be positioned at the connection part of the rigid-flex board, as well as adapt to any high-frequency bending area of ​​the flexible circuit board, making it suitable for various structural design scenarios of rigid-flex boards. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0013] Figure 1 This is a schematic diagram of the structure of a rigid-flex plate proposed in this invention; Figure 2 for Figure 1 A magnified view of a portion at point A; Figure 3 This is an exploded view of the protective component proposed in this invention; Figure 4 This is a schematic diagram of the structure of the first connector proposed in this invention. Figure 1 ; Figure 5 This is a schematic diagram of the structure of the first connector proposed in this invention. Figure 2 ; Figure 6 This is a schematic diagram of the structure of the second connector proposed in this invention; Figure 7 This is a schematic diagram of the structure of the protective component proposed in this invention. Figure 1 ; Figure 8 This is a schematic diagram of the structure of the protective component proposed in this invention. Figure 2 .

[0014] In the attached drawings: 1. Rigid circuit board, 2. Flexible circuit board, 3. Protective component, 4. Protective element, 5. Elastic element, 6. First connector, 7. Second connector, 8. Insertion hole, 9. Fixing hole, 10. Insert rod, 11. Connecting buckle, 12. Clip, 13. Slot, 14. Flexible anti-slip element. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0016] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0017] like Figures 1-8 As shown, a rigid-flex PCB includes a rigid circuit board 1, a flexible circuit board 2, and a protective component 3. The flexible circuit board 2 is connected to the rigid circuit board 1, and the protective component 3 is movably sleeved on the flexible circuit board 2. The protective component 3 includes several sets of protective components 4 and elastic components 5. The elastic components 5 are movably engaged with the upper and lower ends of two adjacent sets of protective components 4, and the two ends of the elastic components 5 are movably connected to the protective components 4 on the corresponding sides. The combination of several sets of protective components 4 and elastic components 5 forms a wrap-around protection for the flexible circuit board 2.

[0018] The protective component 4 includes a first connector 6 and a second connector 7 that cooperate with each other, and the first connector 6 and the second connector 7 are detachably connected.

[0019] The first connector 6 has an insertion hole 8 on the side opposite to the second connector 7, and the upper wall of the first connector 6 has a fixing hole 9, which is connected to the insertion hole 8.

[0020] The second connector 7 is equipped with a plug rod 10 on the side opposite to the first connector 6. The plug rod 10 is matched with the plug hole 8. A connecting buckle 11 is movably installed on the upper wall of the plug rod 10. The lower end of the connecting buckle 11 is located inside the plug rod 10 and is connected by a spring. When the connecting buckle 11 is pressed down, the spring is compressed. When the external force is removed, the spring pushes the connecting buckle 11 to rise. The connecting buckle 11 is matched with the fixing hole 9. When it is necessary to connect the first connector 6 and the second connector 7, insert the plug 10 into the plug hole 8, and the connecting buckle 11 is movably engaged in the fixing hole 9 to fix the first connector 6 and the second connector 7. When it is necessary to disassemble, press the connecting buckle 11 down and drag the first connector 6 and the second connector 7 to both sides.

[0021] The elastic member 5 is equipped with a locking member 12 at both ends. The upper and lower ends of the protective member 4 are respectively provided with a slot 13 that is adapted to the structure of the locking member 12. The elastic member 5 is able to be movably engaged with the protective member 4 through the cooperation of the locking member 12 and the slot 13.

[0022] Multiple sets of flexible anti-slip components 14 are installed on the inner side of the protective component 4 so that the inner side of the protective component 4 is fixed to the flexible circuit board 2.

[0023] The protective component 4 and the clip 12 are made of insulating plastic, and the elastic component 5 is made of flexible elastic material.

[0024] The specific usage is as follows: I. Assembly of Protective Component 3 Take out the first connector 6 and the second connector 7 of several sets of protective components 4, and insert the plug 10 of the second connector 7 into the plug hole 8 of the first connector 6; after the plug 10 is fully inserted into the plug hole 8, the connecting buckle 11 springs up under the action of the spring and is locked into the fixing hole 9 of the first connector 6, thus completing the splicing of a single set of protective components 4. At this time, the protective components 4 form a wrapping frame that is adapted to the cross section of the flexible circuit board. Align the locking pieces 12 at both ends of the elastic member 5 with the slots 13 at the upper and lower ends of the adjacent protective member 4, and push them in along the direction of the slots 13 so that the locking pieces 12 and the slots 13 are fully engaged. In this way, the connection between multiple sets of protective members 4 and elastic members 5 is completed in sequence to form a continuous protective assembly 3.

[0025] II. Assembly of Protective Component 3 and the Rigid-Soft Bonding Plate If no components are soldered onto the flexible circuit board, the assembled protective component 3 is directly inserted from the end of the flexible circuit board. If the flexible circuit board has already been soldered with components, the first connector 6 and the second connector 7 of the protective component 4 can be removed first, and then the protective component 4 and the elastic component 5 can be spliced ​​together from the side of the flexible circuit board to complete the installation of the protective component 3.

[0026] III. Locating the Protected Area The protective component 3 is assembled at the joint between the rigid circuit board and the flexible circuit board, so that the protective component 4 covers the flexible circuit board segment of the joint. Alternatively, depending on the movement structure of the equipment, the protective component 3 can be assembled in the bending center area of ​​the flexible circuit board.

[0027] The protective component 4 is attached to the flexible circuit board through the flexible anti-slip component 14 on the inner side, which disperses the bending stress to the frame structure of the protective component 4. The elastic element 5 undergoes elastic deformation with the relative displacement of the protective element 4, buffering the bending impact force and maintaining the continuity of the protective component 3 at the same time, avoiding gaps between the protective elements 4. If the protective position needs to be adjusted, the protective component 3 can be slid directly to the new area; if the flexible circuit board needs to be maintained, press down on the connecting buckle 11 to compress the spring, which will separate the first connecting piece 6 and the second connecting piece 7, and quickly disassemble the protective component 3.

[0028] IV. Disassembly and Replacement of Protective Component 3 When the protective component 3 is partially damaged, such as when the elastic element 5 is aged, the corresponding elastic element 5 can be removed separately, and the clip 12 can be pulled out in the opposite direction along the slot 13. After replacing the new elastic element 5, the clips can be re-engaged. If the protective component 4 is damaged, press the connecting buckle 11 to separate the first connecting component 6 and the second connecting component 7, replace the damaged part and reassemble. There is no need to replace the entire protective component 3.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents. In conclusion, if those skilled in the art, inspired by this description, design similar structural methods and embodiments without departing from the inventive spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A rigid-flex PCB, characterized in that, It includes a rigid circuit board, a flexible circuit board, and a protective component, wherein the flexible circuit board is connected to the rigid circuit board, and the protective component is movably sleeved on the flexible circuit board; The protective component includes several sets of protective components and elastic components. The elastic components are movably engaged with the upper and lower ends of two adjacent sets of protective components, and the two ends of the elastic components are movably connected to the protective components on the corresponding sides. The combination of several sets of protective components and the elastic components forms a wrap-around protection for the flexible circuit board.

2. The rigid-flex PCB according to claim 1, characterized in that, The protective component includes a first connector and a second connector that cooperate with each other, and the first connector and the second connector are detachably connected.

3. The rigid-flex PVC board according to claim 2, characterized in that, The first connector has an insertion hole on the side opposite to the second connector, and the upper wall of the first connector has a fixing hole, which is connected to the insertion hole.

4. A rigid-flex PCB according to claim 3, characterized in that, The second connector has a plug rod installed on the side opposite to the first connector. The plug rod is matched with the plug hole. A connecting buckle is movably installed on the upper wall of the plug rod. The lower end of the connecting buckle is located inside the plug rod and is connected by a spring.

5. A rigid-flex PVC board according to claim 4, characterized in that, The elastic member has a locking device installed at both ends, and the upper and lower ends of the protective member are respectively provided with slots that are adapted to the structure of the locking device. The elastic member can be movably engaged with the protective member through the cooperation of the locking device and the slot.

6. A rigid-flex PCB according to claim 5, characterized in that, Multiple sets of flexible anti-slip components are installed on the inner side of the protective component.

7. A rigid-flex PVC board according to claim 6, characterized in that, The protective components and clips are made of insulating plastic, and the elastic components are made of flexible elastic material.

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