An FPC structure suitable for electronic device detachable scene and use method

Abstract

The application discloses a FPC structure suitable for a separable scene of an electronic device and a use method thereof, wherein the FPC structure comprises a FPC body; the FPC body is provided with a V-shaped opening; a first side of the FPC body can be connected with a fixed base; a second side of the FPC body can be connected with a movable base; and the V-shaped opening is used for facilitating people or operating equipment to tear the FPC body. The FPC structure suitable for the separable scene of the electronic device can realize the precision and reliability of FPC line separation without a matched punching equipment. The FPC body is suitable for being applied to various miniaturized, integrated and special-shaped electronic products. The use method of the FPC structure can guide people to efficiently fix or separate the FPC body.

Description

Technical Field

[0001] This invention belongs to the field of flexible printed circuit board (FPC) technology, specifically relating to an FPC structure and its usage method suitable for detachable electronic devices. Background Technology

[0002] In the fields of consumer electronics, industrial control, and smart devices, there are widespread application scenarios for circuit separation. The core requirements of such scenarios are: to ensure stable communication and power supply functions of the circuit before the electronic device is separated, and to completely disconnect the circuit when the electronic device is separated, so as to avoid problems such as circuit sticking and communication failure.

[0003] Currently, the traditional separation method used in the industry for this scenario is the physical guillotine separation method. This method uses the cutting action of a blade in a punching device to physically separate the FPC lines between two connected devices. However, in practical applications, the guillotine separation method has been found to have several technical drawbacks: (1) Defects in stress characteristics: The parallel cutting force of punching is easily dispersed. It is necessary to adjust the angle between the cutting line and the cutting plane to form stress concentration in order to improve the shearing force. It has high requirements for the accuracy of the cutting angle and low operational error tolerance. (2) Equipment and cost defects: A dedicated punching and cutting equipment needs to be installed in the separator, which not only increases the purchase and maintenance costs of the punching and cutting equipment, but also occupies the layout space of electronic equipment, which is not conducive to the miniaturization and integration design of electronic products; (3) Separation reliability defects: During the punching process, problems such as blade wear and adhesion between FPC circuit layers may occur, which cannot guarantee that the circuit is completely cut off, and there is a safety risk of circuit disconnection failure; (4) Structural adaptation defects: Guillotine punching has strict limitations on the installation layout of FPC and cannot adapt to the structure of many miniaturized and irregular electronic products.

[0004] Currently, there is a need to develop an FPC structure suitable for detachable electronic devices, capable of achieving precise and reliable FPC circuit separation without the need for additional punching equipment. It is also necessary to invent a method for using this FPC structure to guide people in efficiently fixing or separating the FPC body. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, this invention provides an FPC structure suitable for separable electronic devices, which can achieve accurate and reliable FPC line separation without the need for supporting punching equipment.

[0006] The present invention adopts the following technical solution: An FPC structure suitable for detachable electronic devices includes an FPC body; the FPC body is provided with a V-shaped opening; a first side of the FPC body can be connected to a fixed base; a second side of the FPC body can be connected to a movable base; the V-shaped opening is used to facilitate people or operating equipment to tear the FPC body.

[0007] In one embodiment, the FPC body has several V-shaped openings on its side; the FPC body also has several diamond-shaped openings, the sharp corners of the V-shaped openings and the sharp corners of the diamond-shaped openings are on the same straight line; or, the longitudinal line passing through the sharp corner of the V-shaped opening is parallel to the longitudinal line passing through the sharp corner of the diamond-shaped opening.

[0008] In one embodiment, the wires of the FPC body are provided with V-shaped portions; the sharp corner of the V-shaped portion and the sharp corner of the V-shaped opening are on the same straight line; or, the longitudinal straight line passing through the sharp corner of the V-shaped portion and the longitudinal straight line passing through the sharp corner of the V-shaped opening are parallel to each other.

[0009] In one embodiment, the wires of the FPC body are provided with W-shaped portions; the sharp corners of the W-shaped portions are respectively aligned with the sharp corners of the V-shaped openings at corresponding positions; or, the longitudinal line passing through the sharp corners of the W-shaped portions is parallel to the longitudinal line passing through the sharp corners of the V-shaped openings.

[0010] In one embodiment, the FPC body is provided with a plurality of circular holes that facilitate the splitting of the FPC body.

[0011] Furthermore, the included angle of the V-shaped opening is 30° to 60°.

[0012] Furthermore, a plurality of first connection holes are provided on the first side of the FPC body, which are used to facilitate the connection between the FPC body and the fixed base; a plurality of second connection holes are provided on the second side of the FPC body, which are used to facilitate the connection between the FPC body and the movable base.

[0013] Furthermore, an FPC structure suitable for detachable electronic devices further includes a reinforcing plate; the reinforcing plate is disposed on at least one surface of the FPC body.

[0014] Furthermore, an FPC structure suitable for detachable electronic devices further includes fasteners; a first side of the FPC body is connected to a fixed base via the fasteners; and a second side of the FPC body is connected to a movable base via the fasteners.

[0015] Another object of the present invention is to provide a method of using an FPC structure to guide people in efficiently fixing or separating the FPC body.

[0016] A method of using an FPC structure, based on the aforementioned FPC structure suitable for separable electronic devices, includes a fixing method or a separation method. When the FPC body needs to be fixed, the fixing method is used for fixing; The fixing method includes the following steps: A1. First, install reinforcing plates on the lower and upper surfaces of the first side of the FPC body, and ensure that the openings of the reinforcing plates are aligned with the first connecting holes on the FPC body. First, reinforcement plates are installed on the lower and upper surfaces of the second side of the FPC body, ensuring that the openings of the reinforcement plates are aligned with the second connection holes on the FPC body. A2. Next, align the first connecting hole of the FPC body with the threaded hole of the fixed base, and align the second connecting hole of the FPC body with the threaded hole of the movable base. A3. Pass the fastener through the opening and the first connecting hole to connect the fastener to the threaded hole of the fixed base; Pass the fastener through the opening and the second connecting hole to connect the fastener to the threaded hole of the movable base; A4. Complete the fixing of the FPC body; When the FPC body needs to be separated, the separation method is used for separation; The separation method includes the following steps: B1. Remove the movement restrictions on the movable base, allowing it to move freely; B2. Grasp the second side of the FPC body and apply tension; B3. Under the action of external tensile force, the FPC body tears from the V-shaped opening, eventually tearing into at least two pieces; B4. Complete the separation of the FPC body.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention discloses an FPC structure suitable for separable electronic devices. The FPC body carries circuit traces and electrical functions, serving as the core carrier for signal transmission. A V-shaped notch is provided on the FPC body; the sharp corner of this notch is a stress concentration point, crucial for tearing the FPC body under tensile force. For example, when separating the FPC body, pulling the second side away from the fixed base will cause tearing at the V-shaped notch, ultimately splitting the FPC body into at least two pieces. Under a tensile force of 100N±30N, 100% complete separation of the FPC body can be achieved without adhesion or failure risk, overcoming the core drawbacks of traditional guillotine-style separation methods.

[0018] This invention provides an FPC structure suitable for separable electronic devices. The separation of the FPC body does not require the use of punching equipment, and the FPC body is suitable for various miniaturized, integrated, and irregularly shaped electronic products, breaking the layout limitations of traditional electronic products (traditional electronic products need to consider the applicability of the guillotine-type separation method).

[0019] This invention provides an FPC structure suitable for detachable electronic devices. By setting a V-shaped opening, it can achieve accurate and reliable separation of FPC circuits without the need for a matching punching equipment.

[0020] A method for using an FPC structure that can guide people to efficiently fix or separate the FPC body. Attached Figure Description

[0021] The technology of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 It is a layout diagram of "FPC body, reinforcing plate, fixed base, and movable base"; Figure 2 It is a layout diagram of "FPC body, reinforcing plate, fixed base, and movable base"; Figure 3 This is a top view of the first embodiment of the FPC body; Figure 4 This is a top view of the second embodiment of the FPC body (V-shaped openings are provided on both sides of the FPC body). Figure 5 This is a top view of the third embodiment of the FPC body; Figure 6 This is a top view of the fourth embodiment of the FPC body.

[0022] Figure label: 1-FPC body; 11-V-shaped opening; A-First side; B-Second side; 12-Rhombus-shaped opening; D-Longitudinal straight line; 13-Wire; 131-V-shaped part; 132-W-shaped part; 14-First connecting hole; 15-Second connecting hole; 16-Reinforcing plate; 17-Fastener; 18-Round hole; 19-Line segment; 2-Fixed base; 3-Active base; F - Direction of tension. Detailed Implementation

[0023] The following will provide a clear and complete description of the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of the present invention. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the accompanying drawings indicate the same or similar parts.

[0024] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. Furthermore, the descriptions of "up," "down," "left," and "right" used in this invention are only relative to the relative positional relationships of the various components of the invention in the accompanying drawings.

[0025] Reference Figures 1 to 6 An FPC structure suitable for detachable electronic devices includes an FPC body 1; the FPC body 1 is provided with a V-shaped opening 11; a first side A of the FPC body 1 can be connected to a fixed base 2 (such as a fixed base of an electronic device); a second side B of the FPC body 1 can be connected to a movable base 3 (such as a mounting carrier of an electronic device); the V-shaped opening 11 is used to facilitate people or operating equipment (such as a robotic arm) to tear the FPC body 1.

[0026] The first side A of the FPC body 1 can be connected to the circuit of an electronic device; the second side B of the FPC body 1 can be connected to the circuit of an electronic device. To illustrate, the fixed base 2 is like the fixed base of an electronic device; after the first side A of the FPC body 1 is connected to the fixed base 2, when the FPC body 1 needs to be torn apart, the first side A of the FPC body 1 and the fixed base 2 remain relatively stationary. The movable base 3 acts as a mounting carrier for electronic devices. After the second side B of the FPC body 1 is connected to the movable base 3, when the FPC body 1 needs to be torn apart, the movement restriction of the "movable base 3" is first released, and then the "FPC body 1 and movable base 3" are pulled to one side, so that the FPC body 1 begins to tear apart at the V-shaped opening 11. The "movable base 3" can move after the movement restriction is released.

[0027] Reference Figures 1 to 6 In one embodiment, the FPC body 1 has several V-shaped openings 11 on its side; the FPC body 1 also has several diamond-shaped openings 12, the sharp angles of the V-shaped openings 11 and the sharp angles of the diamond-shaped openings 12 being on the same straight line; or, the longitudinal line passing through the sharp angle of the V-shaped opening and the longitudinal line passing through the sharp angle of the diamond-shaped opening are parallel to each other; wherein, the longitudinal lines are combined Figure 3The label D in the text can be understood as follows: the "vertical" direction of the vertical line is relative, and the vertical line is a virtual line constructed by the present invention for the convenience of description.

[0028] Reference Figure 4 Preferably, V-shaped openings 11 are respectively provided on both sides of the FPC body 1. The sharp corners of the V-shaped openings on both sides can be in a straight line or staggered. The present invention can control the separation path of the FPC body by adjusting the number and spacing of the V-shaped openings, so as to achieve precise and reliable separation of the FPC body.

[0029] Reference Figure 3 or Figure 6 In one embodiment, the wire 13 of the FPC body 1 is provided with a V-shaped portion 131; the sharp corner of the V-shaped portion 131 and the sharp corner of the V-shaped opening 11 are on the same straight line; or, the longitudinal line passing through the sharp corner of the V-shaped portion and the longitudinal line passing through the sharp corner of the V-shaped opening are parallel to each other.

[0030] When the FPC body 1 is subjected to tensile force (for tearing the FPC body), the V-shaped opening 11 of the present invention is a stress concentration point, which can ensure that the FPC body 1 starts to tear from the V-shaped opening 11. The sharp corner of the V-shaped part 131 and the sharp corner of the V-shaped opening 11 are on the same straight line, which helps to ensure that the circuit breaks accurately from the sharp corner of the V-shaped part and avoids irregular adhesion.

[0031] Reference Figure 5 In one embodiment, the wire 13 of the FPC body 1 is provided with a W-shaped portion 132; the sharp corner of the W-shaped portion 132 is on the same straight line as the sharp corner of the V-shaped opening 11 at the corresponding position; or, the longitudinal line passing through the sharp corner of the W-shaped portion is parallel to the longitudinal line passing through the sharp corner of the V-shaped opening.

[0032] Combination Figures 1 to 6 In one embodiment, the V-angle of the V-shaped opening 11 is 30° to 60°. This design of the present invention can balance stress concentration and the rationality of the circuit layout. Preferably, the V-angle of the V-shaped opening 11 is set to 60°.

[0033] For example, refer to Figure 3 In the first embodiment, a V-shaped opening 11 is provided on one side of the FPC body 1, and the included angle of the V-shaped opening 11 is 60°; the wires 13 of the FPC body 1 are provided with V-shaped portions 131, and the included angle of the V-shaped portions 131 is 60°, and the pointed corner of the V-shaped opening 11 and the included angle of the V-shaped portions 131 are on the same straight line; a diamond-shaped opening 12 is provided between the wires 13 of the FPC body 1, and the pointed corner of the diamond-shaped opening 12 and the pointed corner of the V-shaped opening 11 are on the same straight line.

[0034] For example, refer to Figure 4 In the second embodiment, two V-shaped openings 11 are provided on one side of the FPC body 1, and one V-shaped opening 11 is provided on the other side of the FPC body 1; the wires 13 of the FPC body 1 are provided with W-shaped portions 132, and the sharp corners of the W-shaped portions 132 are respectively aligned with the sharp corners of the corresponding V-shaped openings 11; the FPC body 1 is also provided with diamond-shaped openings 12, and the sharp corners of the diamond-shaped openings 12 are aligned with the sharp corners of the corresponding V-shaped openings 11; wherein, the diamond-shaped openings 12 are provided between the wires 13 of the FPC body 1, which facilitates the tearing of the wires of the FPC body 1.

[0035] For example, refer to Figure 6 In one embodiment, the FPC body 1 is provided with a plurality of circular holes 18 that facilitate the splitting of the FPC body 1; preferably, the FPC body 1 is also provided with line segments 19 that guide the splitting; the line segments 19 are connected to the circular holes 18.

[0036] Reference Figures 1 to 6 In one embodiment, the first side A of the FPC body 1 is provided with a plurality of first connection holes 14, which are used to facilitate the connection between the FPC body 1 and the fixed base 2; the second side B of the FPC body 1 is provided with a plurality of second connection holes 15, which are used to facilitate the connection between the FPC body 1 and the movable base 3.

[0037] Reference Figure 3 Preferably, there are two first connecting holes 14 and one second connecting hole 15.

[0038] In one embodiment, the distance between the first connecting hole 14 and another adjacent first connecting hole 14 is 5mm to 10mm.

[0039] In one embodiment, the diameter of the first connecting hole 14 is 2 mm.

[0040] In one embodiment, the diameter of the second connecting hole 15 is 2 mm.

[0041] Reference Figure 1 and Figure 2 In one embodiment, an FPC structure suitable for detachable electronic devices further includes a reinforcing plate 16; the reinforcing plate 16 is disposed on at least one surface of the FPC body 1. This invention utilizes the rigidity of the reinforcing plate 16 to provide localized support to the flexible FPC body 1.

[0042] Preferably, the reinforcing plates 16 are provided on both the lower and upper surfaces of the first side A of the FPC body 1, forming double-sided reinforcement of the FPC body 1; the reinforcing plates 16 are also provided on both the lower and upper surfaces of the second side B of the FPC body 1, forming double-sided reinforcement of the FPC body 1. This design of the present invention can effectively prevent problems such as longitudinal misalignment, twisting, and deformation of local positions of the FPC body during the tearing process.

[0043] In one embodiment, the thickness of the reinforcing plate 16 is ≥0.5mm.

[0044] Preferably, the reinforcing plate 16 is an FR4 reinforcing plate, which refers to "a rigid reinforcing plate with flame-retardant properties made of glass fiber and epoxy resin".

[0045] Reference Figure 1 and Figure 2 In one embodiment, an FPC structure suitable for detachable electronic devices further includes a fastener 17; the first side A of the FPC body 1 is connected to a fixed base 2 (such as a fixed base of an electronic device) via the fastener 17; the second side B of the FPC body 1 is connected to a movable base 3 (such as a mounting carrier of an electronic device) via the fastener 17.

[0046] In one embodiment, the fastener 17 is a screw; the screw can pass through the first connecting hole 14 of the FPC body 1 and be threadedly connected to the fixed base 2 (such as the fixed base of an electronic device); the screw can pass through the second connecting hole 15 of the FPC body 1 and be threadedly connected to the movable base 3 (such as the mounting carrier of an electronic device).

[0047] Preferably, the reinforcing plate 16 is provided with an opening for the fastener 17 to pass through; Specifically, the reinforcing plate 16 is provided on both the lower and upper surfaces of the first side A of the FPC body 1, and the opening of the reinforcing plate 16 communicates with the first connecting hole 14; when fixing the first side A of the FPC body 1, the fastener 17 is threaded through the opening and the first connecting hole 14 and then threadedly connected to the fixing base 2 (such as the fixing base of an electronic device). For example, the reinforcing plate 16 is provided on both the lower and upper surfaces of the second side B of the FPC body 1, and the opening of the reinforcing plate 16 communicates with the second connecting hole 15; when fixing the second side B of the FPC body 1, the fastener 17 is threadedly connected to the movable base 3 (such as the mounting carrier of electronic device) after passing through the opening and the second connecting hole 15.

[0048] The reinforcing plate 16 can provide a reliable support surface for the fastener 17. In addition, when the FPC body 1 needs to be torn, the reinforcing plate 16 can prevent the tensile force from acting directly on the first connecting hole 14 and the second connecting hole 15, thereby causing the end connection of the FPC body 1 to fail, which is conducive to the FPC body starting to tear at the V-shaped opening.

[0049] Another object of the present invention is to provide a method of using an FPC structure to guide people in efficiently fixing or separating the FPC body.

[0050] Combination Figures 1 to 6 To understand, an FPC structure is used in a way that is based on an FPC structure suitable for separable electronic devices, which includes a fixing method or a separation method. When the FPC body 1 needs to be fixed, the fixing method is used for fixing; The fixing method includes the following steps: A1. First, a reinforcing plate 16 is provided on the lower and upper surfaces of the first side A of the FPC body 1, and the opening of the reinforcing plate 16 is connected to the first connecting hole 14 on the FPC body 1. First, a reinforcing plate 16 is provided on the lower and upper surfaces of the second side B of the FPC body 1, and the opening of the reinforcing plate 16 is made to communicate with the second connecting hole 15 on the FPC body 1. A2. Next, align the first connecting hole 14 of the FPC body 1 with the threaded hole of the fixed base 2, and align the second connecting hole 15 of the FPC body 1 with the threaded hole of the movable base 3. A3. Pass the fastener 17 through the opening and the first connecting hole 14, so that the fastener 17 is connected to the threaded hole of the fixing base 2 (such as the fixing base of an electronic device). Pass the fastener 17 through the opening and the second connecting hole 15 to connect the fastener 17 to the threaded hole of the movable base 3 (such as the mounting carrier of an electronic device). A4. Complete the fixing of the FPC body 1; When the FPC body 1 needs to be separated, the separation method is used for separation; The separation method includes the following steps: B1. Release the movement restriction of the movable base 3 (such as releasing the fixing screws that restrict the movement of the electronic device mounting carrier) so that the movable base 3 can move freely; B2. Grasp the second side B of the FPC body 1 (at this time, the second side B of the FPC body 1 is connected to the movable base 3 and can move together (Note: the second side B of the FPC body 1 is connected to the mounting carrier of the electronic device. After the mounting carrier is released from the movement restriction, it can move)) and apply a pulling force (e.g., apply a pulling force F of 100N±30N). B3. Under the action of external tensile force F, the FPC body 1 is torn from the V-shaped opening 11, and eventually torn into at least two pieces; B4. Complete the separation of the FPC body 1.

[0051] This invention provides an FPC structure suitable for separable electronic devices. It enables separation without the need for punching equipment, saving 30% of the internal space of electronic products and facilitating miniaturization design.

[0052] This invention provides an FPC structure suitable for detachable electronic devices. It can maintain stable communication and power supply functions before device separation and completely cut off the circuit when the device is separated. Moreover, the separation process does not require a punching or cutting device, which greatly improves the separation reliability and scenario adaptability.

[0053] This invention provides an FPC structure suitable for detachable electronic devices. The size parameters (such as length and width) of the FPC body can be adjusted according to the needs of different scenarios such as industrial control, smart wearables, and new energy equipment to adapt to various application scenarios.

[0054] Other aspects of the FPC structure and usage method applicable to detachable electronic devices described in this invention can be found in the prior art and will not be repeated here.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An FPC structure suitable for detachable electronic devices, characterized in that, It includes an FPC body; the FPC body is provided with a V-shaped opening; a first side of the FPC body can be connected to a fixed base; a second side of the FPC body can be connected to a movable base; the V-shaped opening is used to facilitate people or operating equipment to tear the FPC body.

2. The FPC structure suitable for detachable electronic devices according to claim 1, characterized in that, The FPC body has several V-shaped openings on its side; the FPC body also has several diamond-shaped openings, the sharp corners of the V-shaped openings and the sharp corners of the diamond-shaped openings are on the same straight line; or, the longitudinal line passing through the sharp corner of the V-shaped opening is parallel to the longitudinal line passing through the sharp corner of the diamond-shaped opening.

3. The FPC structure suitable for detachable electronic devices according to claim 2, characterized in that, The wires of the FPC body are provided with V-shaped portions; the sharp corner of the V-shaped portion and the sharp corner of the V-shaped opening are on the same straight line; or, the longitudinal straight line passing through the sharp corner of the V-shaped portion and the longitudinal straight line passing through the sharp corner of the V-shaped opening are parallel to each other.

4. The FPC structure suitable for detachable electronic devices according to claim 2, characterized in that, The FPC body has wires with W-shaped portions; the sharp corners of the W-shaped portions are aligned with the sharp corners of the corresponding V-shaped openings; or, the longitudinal line passing through the sharp corners of the W-shaped portions is parallel to the longitudinal line passing through the sharp corners of the V-shaped openings.

5. The FPC structure suitable for detachable electronic devices according to claim 1, characterized in that, The FPC body has several circular holes that facilitate the splitting of the FPC body.

6. The FPC structure for detachable electronic devices according to claim 1, characterized in that, The included angle of the V-shaped opening is 30° to 60°.

7. The FPC structure suitable for detachable electronic devices according to claim 1, characterized in that, The first side of the FPC body is provided with a plurality of first connection holes, which are used to facilitate the connection between the FPC body and the fixed base; the second side of the FPC body is provided with a plurality of second connection holes, which are used to facilitate the connection between the FPC body and the movable base.

8. The FPC structure suitable for detachable electronic devices according to claim 1, characterized in that, It also includes a reinforcing plate; the reinforcing plate is disposed on at least one surface of the FPC body.

9. An FPC structure suitable for detachable electronic devices according to any one of claims 1 to 8, characterized in that, It also includes fasteners; a first side of the FPC body is connected to a fixed base via the fasteners; a second side of the FPC body is connected to a movable base via the fasteners.

10. A method of using an FPC structure, based on an FPC structure suitable for detachable electronic devices as described in any one of claims 1 to 9, characterized in that, Including fixation methods or separation methods; When the FPC body needs to be fixed, the fixing method is used for fixing; The fixing method includes the following steps: A1. First, install reinforcing plates on the lower and upper surfaces of the first side of the FPC body, and ensure that the openings of the reinforcing plates are aligned with the first connecting holes on the FPC body. First, reinforcement plates are installed on the lower and upper surfaces of the second side of the FPC body, ensuring that the openings of the reinforcement plates are aligned with the second connection holes on the FPC body. A2. Next, align the first connecting hole of the FPC body with the threaded hole of the fixed base, and align the second connecting hole of the FPC body with the threaded hole of the movable base. A3. Pass the fastener through the opening and the first connecting hole to connect the fastener to the threaded hole of the fixed base; Pass the fastener through the opening and the second connecting hole to connect the fastener to the threaded hole of the movable base; A4. Complete the fixing of the FPC body; When the FPC body needs to be separated, the separation method is used for separation; The separation method includes the following steps: B1. Remove the movement restrictions on the movable base, allowing it to move freely; B2. Grasp the second side of the FPC body and apply tension; B3. Under the action of external tensile force, the FPC body tears from the V-shaped opening, eventually tearing into at least two pieces; B4. Complete the separation of the FPC body.

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