Pin nail plate assisted support framework for bending of soft-hard combined plate

Abstract

The utility model belongs to circuit board support technical field, concretely relates to a kind of Pin nail board auxiliary soft and hard combination board bending's support framework, including support framework and the mounting block of fixed in support framework middle one side, the top of mounting block is rotatably connected with blocking strip, the both ends of support framework are equipped with first locking structure, second locking structure is installed between mounting block and blocking strip, first locking structure includes the fixed sheet of fixed in the both ends of mounting block, fixed sheet is screw-threaded connected with threaded Pin nail, the end of threaded Pin nail is fixed with mounting column, the side of fixed sheet is fixed with clasp, at least one clamping tooth is assembled on mounting column, sliding strip is slidably connected in mounting column, sliding strip extends into mounting column and is fixedly connected with clamping tooth, sliding slot is provided on mounting column, and clamping tooth slides on sliding slot.The utility model can bend along with circuit board, and reliable support effect is played to flexible PI film, avoid its breakage when bending.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board support technology, specifically relating to a support frame for bending a rigid-flex board with pins. Background Technology

[0002] With the trend of miniaturization, thinning, and multifunctionality of electronic devices, rigid-flex PCBs have been widely used in various electronic products, such as foldable screen phones, wearable devices, and automotive electronics, due to their advantage of combining the stability of rigid circuit boards with the bendability of flexible circuit boards. In the production and application of rigid-flex PCBs, bending the flexible part (usually a flexible PI film) is a common process requirement, and the supporting frame plays a crucial role in this process.

[0003] Existing rigid-flex board bending support frames have revealed many problems in practical applications. On the one hand, traditional support frames are mostly fixed in structural design and cannot adaptively bend with the circuit board in real time during the bending process. When bending the rigid-flex board, the support frame cannot synchronously conform to the bending trajectory of the flexible PI film, resulting in uneven stress on the flexible PI film at the bending point, causing problems such as circuit breakage and short circuit, which seriously affects the reliability and service life of the product.

[0004] Furthermore, the existing support frame provides limited support to the flexible PI film during bending. The flexible PI film itself is thin and soft, making it highly susceptible to twisting and wrinkling under external forces during bending. Traditional support frames, due to their flawed structural design, cannot provide continuous, uniform, and effective support to the flexible PI film during bending, leading to frequent breakage.

[0005] In conclusion, it is necessary to develop a support frame for bending rigid-flexible composite boards with pin-shaped nails. Utility Model Content

[0006] The purpose of this invention is to provide a support frame for bending a rigid-flex PCB with pins, which can follow the circuit board and provide reliable support for the flexible PI film, preventing it from breaking during bending.

[0007] The specific technical solution adopted by this utility model is as follows:

[0008] A support frame for bending a rigid-flex board with pins includes a support frame and a mounting block fixed to one side of the middle part of the support frame. A blocking strip is rotatably connected to the top of the mounting block.

[0009] Both ends of the support frame are equipped with a first locking structure, and a second locking structure is installed between the mounting block and the blocking strip.

[0010] The first locking structure includes a fixing plate fixed at both ends of the mounting block, a threaded pin connected to the fixing plate, a mounting post fixed to the end of the threaded pin, a retaining ring fixed to one side of the fixing plate, and at least one retaining tooth mounted on the mounting post.

[0011] A sliding strip is slidably connected inside the mounting column. The sliding strip extends into the mounting column and is fixedly connected to the locking teeth. A sliding groove is provided on the mounting column, and the locking teeth slide on the sliding groove. A clamping element is assembled inside the sliding groove.

[0012] The clamping element includes a spring assembled in the slide groove, and the spring is fixedly connected to the retaining tooth.

[0013] A limiting strip is fixed to the side of the retaining tooth near the spring, and the limiting strip is located inside the spring. The limiting strip is slidably connected to the mounting post.

[0014] The support frame is made of a deformable and repositionable material, such as silicone or shape memory metal.

[0015] The second locking structure includes a fixing screw with an internal thread connection to the blocking strip, and the fixing screw is threadedly connected to the mounting block.

[0016] The technical effects achieved by this utility model are as follows:

[0017] This invention, through the setting of a support frame, can follow the bending of the circuit board, providing reliable support for the flexible PI film, preventing it from breaking during bending, and can adapt to different bending angle requirements. It can not only effectively improve the bending quality and product reliability of rigid-flex boards, but also reduce production costs and improve production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure between the fixing plate, the end circuit board and the flexible PI film in this utility model;

[0020] Figure 3 This is a schematic diagram of the structure between the sliding bar, the threaded pin, and the locking teeth in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure between the mounting block, the blocking strip, and the fixing screws in this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Support frame; 2. Mounting block; 3. Flexible PI film; 4. End circuit board; 5. Blocking strip; 6. Fixing piece; 7. Threaded pin; 8. Mounting post; 9. Snap ring; 10. Sliding strip; 11. Snap tooth; 12. Slide groove; 13. Spring; 14. Limiting strip; 15. Fixing screw. Detailed Implementation

[0024] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0025] like Figures 1-4 As shown, a support frame for bending a rigid-flex board with pins includes a support frame 1 and a mounting block 2 fixed to one side of the middle of the support frame 1. A flexible PI film 3 is assembled between two end circuit boards 4, and a circuit board formed by the flexible PI film 3 and the end circuit boards 4 is placed on the support frame 1. A blocking strip 5 is rotatably connected to the top of the mounting block 2.

[0026] When bending the circuit board, the support frame 1 can be twisted, which will cause the flexible PI film 3 to bend. The support frame 1 supports the flexible PI film 3 and prevents it from breaking. The support frame 1 is made of a material that can be deformed and then reset. The support frame 1 is made of silicone or shape memory metal, which allows the support frame 1 to bend the flexible PI film 3 under force and reset after bending. The support frame 1 can also be made of other materials with deformation and reset properties to achieve the bending effect of the flexible PI film 3. The blocking strip 5 can block the bent support frame 1 and the flexible PI film 3 to ensure the bending angle. The rotational connection between the support frame 1 and the mounting block 2 can change the bending angle according to different circuit board models. The middle part of the support frame 1 is a rigid structure, which prevents the mounting block 2 from twisting when bending the support frame 1.

[0027] Both ends of the support frame 1 are equipped with a first locking structure.

[0028] See attached document Figures 2-3 The first locking structure includes a fixing plate 6 fixed to both ends of the mounting block 2, a threaded pin 7 internally connected to the fixing plate 6, a mounting post 8 fixed to the end of the threaded pin 7, a retaining ring 9 fixed to one side of the fixing plate 6, and at least one retaining tooth 11 mounted on the mounting post 8.

[0029] When it is necessary to bend the support frame 1 and the flexible PI film 3, the support frame 1 and the flexible PI film 3 can be locked together first. The threaded pin 7 can lock the fixing piece 6 and the flexible PI film 3 together, or the mounting block 2 can be locked together. When locking, the mounting post 8 is turned so that the mounting post 8 drives the threaded pin 7 to rotate. Through the threaded connection between the threaded pin 7 and the fixing piece 6, the threaded pin 7 can be inserted into the pre-set hole on the flexible PI film 3. The support frame 1 can also be provided with corresponding threaded holes so that the threaded pin 7 can be locked in the same way as the support frame 1. Thus, the fixing piece 6, the flexible PI film 3 and the support frame 1 are locked together, with the flexible PI film 3 in the middle, ensuring the locking effect of the flexible PI film 3. When the support frame 1 drives the flexible PI film 3 to bend, the support frame 1 absorbs stress and avoids the flexible PI film 3 from being overstretched, which can make the two fit better and thus avoid the breakage of the flexible PI film 3.

[0030] See attached document Figure 3 A sliding strip 10 is slidably connected inside the mounting column 8. The sliding strip 10 extends into the mounting column 8 and is fixedly connected to the locking tooth 11. A sliding groove 12 is provided on the mounting column 8. The locking tooth 11 slides on the sliding groove 12. A clamping element is assembled inside the sliding groove 12.

[0031] After the threaded pin 7 is rotated to lock the fixing piece 6 and the flexible PI film 3, it can be engaged with the retaining ring 9 by the retaining teeth 11. When it is necessary to disassemble it, the sliding bar 10 can be pulled to drive the retaining teeth 11 to slide in the sliding groove 12, so that it is disengaged from the retaining ring 9. This allows the mounting post 8 and the threaded pin 7 to be turned, thereby achieving the engagement of the threaded pin 7 and preventing the flexible PI film 3 from being disengaged from the support frame 1 due to other subsequent operations.

[0032] See attached document Figure 3 The clamping component includes a spring 13 assembled in the slide groove 12, and the spring 13 is fixedly connected to the retaining tooth 11. The spring 13 ensures that the retaining tooth 11 is always pushed into the retaining ring 9 without external force, and the retaining tooth 11 is engaged with the retaining ring 9. A limiting strip 14 is fixed on the side of the retaining tooth 11 near the spring 13, and the limiting strip 14 is located inside the spring 13. The limiting strip 14 is slidably connected to the mounting post 8, so that the limiting strip 14 can restrict the spring 13 and prevent the spring 13 from tilting under compression or other conditions.

[0033] See attached document Figure 4A second locking structure is installed between the mounting block 2 and the blocking strip 5. The second locking structure includes a fixing screw 15 with an internal thread connection to the blocking strip 5, and the fixing screw 15 is threadedly connected to the mounting block 2. When it is necessary to twist the blocking strip 5 to change the angle between it and the support frame 1, the fixing screw 15 can be turned so that the fixing screw 15 is disconnected from the threaded connection between the blocking strip 5 and the mounting block 2. Then, through the rotational connection between the blocking strip 5 and the mounting block 2, the mounting block 2 can be rotated. After completion, the fixing screw 15 can be screwed back onto the blocking strip 5 and the mounting block 2 to lock the blocking strip 5 and the mounting block 2.

[0034] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A support frame for bending a rigid-flexible board with pins, comprising a support frame (1) and a mounting block (2) fixed to one side of the middle portion of the support frame (1), characterized in that: The top of the mounting block (2) is rotatably connected to a blocking strip (5); Both ends of the support frame (1) are equipped with a first locking structure, and a second locking structure is installed between the mounting block (2) and the blocking strip (5).

2. The support frame for bending a rigid-flexible composite board with pin-shaped nails as described in claim 1, characterized in that: The first locking structure includes a fixing plate (6) fixed at both ends of the mounting block (2), a threaded pin (7) is threadedly connected to the fixing plate (6), a mounting post (8) is fixed at the end of the threaded pin (7), a retaining ring (9) is fixed on one side of the fixing plate (6), and at least one retaining tooth (11) is mounted on the mounting post (8).

3. The support frame for bending a rigid-flexible composite board with pin-shaped nails as described in claim 2, characterized in that: A sliding strip (10) is slidably connected inside the mounting post (8). The sliding strip (10) extends into the mounting post (8) and is fixedly connected to the locking tooth (11). A sliding groove (12) is provided on the mounting post (8). The locking tooth (11) slides on the sliding groove (12). A clamping member is assembled inside the sliding groove (12).

4. The support frame for bending a rigid-flexible composite board with pin-shaped nails as described in claim 3, characterized in that: The clamping member includes a spring (13) assembled in the slide (12), and the spring (13) is fixedly connected to the locking tooth (11).

5. The support frame for bending a rigid-flexible composite board with pin-shaped nails as described in claim 4, characterized in that: A limiting strip (14) is fixed on the side of the tooth (11) near the spring (13), and the limiting strip (14) is located inside the spring (13). The limiting strip (14) is slidably connected to the mounting post (8).

6. The support frame for bending a rigid-flexible composite board with pin-shaped nails as described in claim 1, characterized in that: The support frame (1) is made of a material that can be deformed and then reset, and the support frame (1) is made of silicone or shape memory metal.

7. The support frame for bending a rigid-flexible composite board with pin-shaped nails as described in claim 1, characterized in that: The second locking structure includes a fixing screw (15) with an internal thread connection to the blocking bar (5), and the fixing screw (15) is threadedly connected to the mounting block (2).

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