Protective structure for flexible circuit board of mobile phone

Abstract

The utility model relates to the field of circuit board protection, in particular to a protection structure for a flexible circuit board of a mobile phone. The technical problem is that a conventional flexible circuit board used for a mobile phone is easy to be physically damaged when the mobile phone is subjected to external force and is easy to be influenced by external environments such as strong electromagnetism and the like, so that the use performance of the mobile phone is reduced, compared with the conventional flexible circuit board used for the mobile phone, the flexible circuit board used for the mobile phone comprises a circuit board body, a first protection assembly and a second protection assembly, the circuit board body is protected through mutual cooperation of the first protection assembly and the second protection assembly, so that the circuit board body is not easily damaged by external force, the interference degree of the external environment can be reduced, the circuit board body is not easily influenced by the external environment through the first protection assembly, and the service life of the circuit board body is prolonged. By arranging the second protection assembly, the side of the circuit board body can be protected, and by arranging the first frame and the second frame, the left end, the right end, the front end and the rear end of the circuit board body can be protected respectively.

Description

Technical Field

[0001] The utility model relates to the field of circuit board protection, in particular to a protection structure for a flexible circuit board of a mobile phone. Background Art

[0002] Mobile phone flexible circuit boards, also known as flexible printed circuit boards, are electronic circuit boards made of flexible substrates. The substrates are usually made of flexible materials such as polyimide or polyester film, and have excellent flexibility and high reliability. In mobile phones, flexible circuit boards are widely used to connect various chips, sensors, display screens and other components to realize circuit transmission and control functions. Their high wiring density, light weight, thin thickness and good flexibility enable mobile phones to achieve lighter and more multifunctional designs. Flexible circuit boards are also widely used in other fields, such as automotive electronics, medical equipment, aerospace and smart homes, demonstrating their important application value in multiple fields. Existing mobile phone flexible circuit boards are usually prone to physical damage when the mobile phone is subjected to external force, and are easily affected by the external environment such as strong electromagnetic fields, resulting in a decrease in the performance of the mobile phone. Utility Model Content

[0003] In order to overcome the existing flexible circuit boards used in mobile phones, they are usually prone to physical damage when the mobile phone is subjected to external forces, and are easily affected by external environments such as strong electromagnetic fields, resulting in a decrease in the performance of the mobile phone.

[0004] The technical solution of the utility model is: a protective structure for a flexible circuit board of a mobile phone, comprising a circuit board body, a first protective component and a second protective component. The surface of the circuit board body is fitted with the first protective component for protecting the circuit board body, and the side of the first protective component is detachably installed with a second protective component for further protecting the circuit board body.

[0005] Preferably, by setting a first protective component and a second protective component to cooperate with each other to protect the circuit board body, it can be prevented from being damaged by external force and the degree of interference from the external environment can be reduced. By setting the first protective component, it can be prevented from being affected by the external environment. By setting the second protective component, the sides of the circuit board body can be protected. By setting the first frame and the second frame, the left and right ends and the front and back ends of the circuit board body can be protected respectively. With the mutual cooperation of the first protective component and the second protective component, it is not easy to be damaged by external force, and the degree of interference from the external environment can be reduced, and the protective effect is better.

[0006] Preferably, the first protective component includes a first mounting plate, a second mounting plate, an electromagnetic shielding film, an insulating layer, a first reinforcement plate, a second reinforcement plate, a spring and a damper. The upper surface of the circuit board body is fitted with a first mounting plate for installing related structures, and the lower surface of the circuit board body is fitted with a second mounting plate for installing related structures. The first mounting plate and the second mounting plate have the same structure. The first mounting plate and the second mounting plate have multiple groups of air grooves for heat dissipation that are evenly distributed and opened at one end of the circuit board body. By fitting the first mounting plate and the second mounting plate at the upper and lower ends of the circuit board body, it is convenient to install the corresponding structure.

[0007] Preferably, an electromagnetic shielding film is attached to the upper end of the first mounting plate to protect the circuit board body from interference from external strong electromagnetic areas or areas susceptible to interference, and an insulating layer is attached to the upper end of the electromagnetic shielding film to prevent the circuit board body from direct contact and damage by external substances.

[0008] Preferably, a first reinforcing plate for enhancing the mechanical strength of the upper end of the circuit board body and facilitating surface mounting is bonded to the upper end of the insulating layer, and a second reinforcing plate for enhancing the mechanical strength of the lower end of the circuit board body and facilitating surface mounting is bonded to the lower end of the second mounting plate. The first reinforcing plate and the second reinforcing plate have the same structure. By providing the first reinforcing plate and the second reinforcing plate, the durability and tear resistance of the circuit board can be improved, and possible damage during bending or folding can be reduced.

[0009] Preferably, a plurality of groups of air holes for increasing air permeability are evenly distributed in a linear manner on the surface of the second reinforcement plate, first mounting holes for connecting to related structures are provided around the four corners of the upper end of the second reinforcement plate, a plurality of groups of springs for buffering are provided around the first reinforcement plate and the second reinforcement plate, a damper for assisting rebound is provided inside the spring, and the upper and lower ends of the spring are respectively fixedly connected to the first reinforcement plate and the second reinforcement plate, and air permeability is increased by providing air grooves and air holes, which can facilitate heat dissipation and avoid damage to the circuit board body caused by excessive temperature.

[0010] Preferably, the second protective component includes a first frame, a second frame and pins. The first frame and the second frame are arranged in two groups opposite to each other. The ends of the two groups of first frames that are close to each other are symmetrically fixed with pins for connecting to the second frames.

[0011] Preferably, two groups of sockets that are engaged with the pins are provided at positions corresponding to the pins at the left and right ends of the second frame, and two groups of second mounting holes that match the first mounting holes are symmetrically provided on the upper and lower ends of the first frame. By arranging the pins on the first frame, they can be engaged with the sockets on the second frame, so that the first frame and the second frame can be connected and fixed together, and disassembly is also convenient.

[0012] Beneficial effects of the utility model:

[0013] 1. Compared with the traditional flexible circuit board used in mobile phones, it is usually easy to be physically damaged when the mobile phone is subjected to external force, and it is easy to be affected by the external environment such as strong electromagnetic, resulting in a decrease in the performance of the mobile phone. By setting the first protective component and the second protective component to cooperate with each other to protect the circuit board body, it can be made less likely to be damaged by external force, and the degree of interference by the external environment can be reduced. By setting the first protective component, it can be made less likely to be affected by the external environment. By setting the electromagnetic shielding film, the circuit in the circuit board can be protected from interference from the strong electromagnetic area or the interference-prone area of ​​the outside world, ensuring the stability of signal transmission. By setting the insulating layer, it can play the role of surface insulation to prevent the circuit board from being directly contacted and damaged by external substances. By setting the first reinforcement plate and the second reinforcement plate, the mechanical strength of the surface can be enhanced, which is helpful for surface installation operations and can also improve the durability and tear resistance of the circuit board, reducing damage that may occur during bending or folding. In addition, by fitting the first mounting plate and the second mounting plate at the upper and lower ends of the circuit board body, it is convenient to install the corresponding structure. By opening a ventilation groove at one end of the first mounting plate and the second mounting plate close to the circuit board body, the air permeability can be increased to facilitate heat dissipation.

[0014] 2. By arranging multiple groups of springs around the sides between the first reinforcement plate and the second reinforcement plate, the springs can use their elasticity to play a certain buffering role when subjected to external force, and by arranging a damper inside the spring, the spring is convenient for rebounding. By arranging a second protective component, the sides of the circuit board body can be protected. The first frame and the second frame can be used to protect the left and right ends and the front and back ends of the circuit board body respectively. By arranging a plug on the first frame, it can be engaged with the plug on the second frame, so that the first frame and the second frame can be connected and fixed together, so as to cooperate to protect the sides of the circuit board body. By opening a second mounting hole on the first frame corresponding to the first mounting hole on the first reinforcement plate and the second reinforcement plate, it is convenient to connect and fix with the relevant structure of the mobile phone through the first mounting hole and the second mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 What is shown is the overall schematic diagram of the protective structure for the flexible circuit board of a mobile phone of the utility model;

[0016] Figure 2 Shown is an explosion diagram of the utility model for the protection structure of the flexible circuit board of a mobile phone;

[0017] Figure 3 Shown is an explosion diagram of the first protective component in the protective structure of the flexible circuit board of a mobile phone of the utility model;

[0018] Figure 4 Shown is a schematic diagram of a first mounting plate in a protective structure for a mobile phone flexible circuit board of the utility model;

[0019] Figure 5 Shown is a schematic diagram of a spring used in a protective structure of a mobile phone flexible circuit board according to the utility model;

[0020] Figure 6 Shown is a schematic diagram of the second protective component in the protective structure of the flexible circuit board of a mobile phone according to the utility model.

[0021] Explanation of the reference numerals: 1. circuit board body; 2. first protective component; 3. second protective component; 201. first mounting plate; 202. second mounting plate; 203. electromagnetic shielding film; 204. insulating layer; 205. first reinforcement plate; 206. second reinforcement plate; 207. ventilation groove; 208. ventilation hole; 209. first mounting hole; 210. spring; 211. damper; 301. first frame; 302. second frame; 303. plug post; 304. plug hole; 305. second mounting hole. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] See also Figure 1-2 The utility model provides an embodiment: a protective structure for a flexible circuit board of a mobile phone, comprising a circuit board body 1, a first protective component 2 and a second protective component 3. The surface of the circuit board body 1 is fitted with the first protective component 2 for protecting the circuit board body 1, and the side of the first protective component 2 is detachably installed with the second protective component 3 for further protecting the circuit board body 1.

[0024] See also Figure 3-4In this embodiment, the first protective component 2 includes a first mounting plate 201, a second mounting plate 202, an electromagnetic shielding film 203, an insulating layer 204, a first reinforcing plate 205, a second reinforcing plate 206, a spring 210 and a damper 211. The upper surface of the circuit board body 1 is fitted with a first mounting plate 201 for installing related structures, and the lower surface of the circuit board body 1 is fitted with a second mounting plate 202 for installing related structures. The first mounting plate 201 and the second mounting plate 202 have the same structure. The first mounting plate 201 and the second mounting plate 202 are evenly opened and closed at one end close to the circuit board body 1, and multiple groups of ventilation grooves 207 for heat dissipation are evenly distributed. By fitting the first mounting plate 201 and the second mounting plate 202 at the upper and lower ends of the circuit board body 1, it is convenient to install the corresponding structure. The upper end of the mounting plate 201 is bonded with an electromagnetic shielding film 203 for protecting the circuit board body 1 from interference from external strong electromagnetic fields or interference-susceptible areas; the upper end of the electromagnetic shielding film 203 is bonded with an insulating layer 204 for preventing the circuit board body 1 from direct contact and damage by external substances; the upper end of the insulating layer 204 is bonded with a first reinforcement plate 205 for enhancing the mechanical strength of the upper end of the circuit board body 1 and facilitating surface mounting; the lower end of the second mounting plate 202 is bonded with a second reinforcement plate 206 for enhancing the mechanical strength of the lower end of the circuit board body 1 and facilitating surface mounting; the first reinforcement plate 205 and the second reinforcement plate 206 have the same structure; by providing the first reinforcement plate 205 and the second reinforcement plate 206, the durability and tear resistance of the circuit board can be improved, and the damage that may occur during bending or folding can be reduced.

[0025] See also Figure 5 In this embodiment, the surface of the second reinforcing plate 206 is evenly distributed linearly with multiple groups of ventilation holes 208 for increasing air permeability, and the upper four corners of the second reinforcing plate 206 are surrounded by first mounting holes 209 for connecting with related structures, and multiple groups of springs 210 for buffering are arranged around the first reinforcing plate 205 and the second reinforcing plate 206. A damper 211 for assisting rebound is arranged inside the spring 210, and the upper and lower ends of the spring 210 are respectively fixedly connected to the first reinforcing plate 205 and the second reinforcing plate 206. By providing the ventilation groove 207 and the ventilation hole 208 to increase air permeability, heat dissipation can be facilitated to avoid damage to the circuit board body 1 caused by excessive temperature.

[0026] See also Figure 6In the present embodiment, the second protective component 3 comprises a first frame 301, a second frame 302 and a plug post 303. The first frame 301 and the second frame 302 are arranged in two groups opposite to each other. The sides of the two groups of first frames 301 close to each other are symmetrically fixed with plug posts 303 for connecting to the second frame 302. The left and right ends of the second frame 302 are provided with two groups of sockets 304 that are snap-fitted and connected to the plug posts 303 at positions corresponding to the plug posts 303. The upper and lower ends of the first frame 301 are symmetrically provided with two groups of second mounting holes 305 that match the first mounting holes 209. By arranging the plug posts 303 on the first frame 301, they can be snap-fitted and connected with the plug posts 304 on the second frame 302, so that the first frame 301 and the second frame 302 can be connected and fixed together, and it is also convenient for disassembly.

[0027] When working, firstly, the first mounting plate 201 and the second mounting plate 202 are fitted with one end of the ventilation groove 207 on the upper and lower ends of the circuit board body 1;

[0028] Then, the electromagnetic shielding film 203, the insulating layer 204 and the first reinforcing plate 205 are sequentially stacked and installed on the upper end of the first mounting plate 201;

[0029] Then, the second reinforcing plate 206 is installed on the lower end of the second mounting plate 202, and the spring 210 is installed around the side between the first reinforcing plate 205 and the second reinforcing plate 206;

[0030] Finally, the second protective component 3 is installed on the outside of the first protective component 2, and the first frame 301 and the second frame 302 are respectively mounted on the left and right and front and back ends of the first protective component 2, so that the plug 303 of the first frame 301 is inserted into the plug hole 304 of the second frame 302, and the above structure is connected to the corresponding position of the mobile phone through the first mounting hole 209 and the second mounting hole 305.

[0031] Through the above steps, the staff firstly fits and installs the ends of the first mounting plate 201 and the second mounting plate 202 with the air-permeable groove 207 on the upper and lower ends of the circuit board body 1, and then sequentially stacks and installs the electromagnetic shielding film 203, the insulating layer 204 and the first reinforcing plate 205 on the upper end of the first mounting plate 201, and then fits and installs the second reinforcing plate 206 on the lower end of the second mounting plate 202, and surrounds and installs the spring 210 on the side between the first reinforcing plate 205 and the second reinforcing plate 206. By setting the electromagnetic shielding film 203, the circuits in the circuit board can be protected from strong electromagnetic fields or The interference of the susceptible interference area ensures the stability of signal transmission. The insulating layer 204 can play the role of surface insulation to prevent the circuit board from being directly contacted and damaged by external substances. The first reinforcement plate 205 and the second reinforcement plate 206 can enhance the mechanical strength of the surface, which is helpful for surface mounting operations and can also improve the durability and tear resistance of the circuit board, reduce the damage that may occur during bending or folding, and the first mounting plate 201 and the second mounting plate 202 are arranged at the upper and lower ends of the circuit board body 1, so that it is convenient to install the corresponding structure. The second mounting plate 202 is provided with a ventilation groove 207 at one end close to the circuit board body 1 to increase the ventilation property and facilitate the heat dissipation. By arranging multiple groups of springs 210 around the side between the first reinforcement plate 205 and the second reinforcement plate 206, the springs 210 can play a certain buffering role by using their elasticity when subjected to external force, and by arranging a damper 211 inside the spring 210, the spring 210 is convenient for rebounding. Finally, the second protective component 3 is installed on the outside of the first protective component 2, and the first frame 301 and the second frame 302 are respectively sleeved on the left and right ends and the front and rear ends of the first protective component 2. The plug post 303 of the first frame 301 is inserted into the plug hole 304 of the second frame 302, and the above structure is connected to the corresponding position of the mobile phone through the first mounting hole 209 and the second mounting hole 305. The side of the circuit board body 1 can be protected by setting the second protective component 3. The first frame 301 and the second frame 302 can be used to protect the left and right ends and the front and back ends of the circuit board body 1 respectively. Under the mutual cooperation of the first protective component 2 and the second protective component 3, it is not easy to be damaged by external force, and the degree of interference from the external environment can be reduced, and the protection effect is better.

[0032] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A protective structure for a flexible circuit board of a mobile phone, comprising a circuit board body (1); characterized in that: It also comprises a first protective component (2) and a second protective component (3); the surface of the circuit board body (1) is provided with the first protective component (2) for protecting the circuit board body (1); and the side of the first protective component (2) is detachably provided with a second protective component (3) for further protecting the circuit board body (1).

2. A protective structure for a mobile phone flexible circuit board according to claim 1, characterized in that: The first protective component (2) comprises a first mounting plate (201), a second mounting plate (202), an electromagnetic shielding film (203), an insulating layer (204), a first reinforcing plate (205), a second reinforcing plate (206), a spring (210) and a damper (211); the upper surface of the circuit board body (1) is provided with a first mounting plate (201) for mounting a related structure; the lower surface of the circuit board body (1) is provided with a second mounting plate (202) for mounting a related structure; the first mounting plate (201) and the second mounting plate (202) are arranged with the same structure; and a plurality of groups of ventilation grooves (207) for heat dissipation are evenly distributed and opened and closed at one end of the first mounting plate (201) and the second mounting plate (202) close to the circuit board body (1).

3. A protective structure for a mobile phone flexible circuit board according to claim 2, characterized in that: An electromagnetic shielding film (203) for protecting the circuit board body (1) from interference from external strong electromagnetic areas or areas susceptible to interference is bonded to the upper end of the first mounting plate (201), and an insulating layer (204) for preventing the circuit board body (1) from direct contact and damage by external substances is bonded to the upper end of the electromagnetic shielding film (203).

4. The protective structure for a mobile phone flexible circuit board according to claim 3, characterized in that: The upper end of the insulating layer (204) is provided with a first reinforcing plate (205) for enhancing the mechanical strength of the upper end of the circuit board body (1) and facilitating surface mounting, and the lower end of the second mounting plate (202) is provided with a second reinforcing plate (206) for enhancing the mechanical strength of the lower end of the circuit board body (1) and facilitating surface mounting, and the first reinforcing plate (205) and the second reinforcing plate (206) are arranged with the same structure.

5. A protective structure for a mobile phone flexible circuit board according to claim 4, characterized in that: The surface of the second reinforcing plate (206) is evenly distributed in a linear manner with a plurality of groups of air holes (208) for increasing air permeability. The upper four corners of the second reinforcing plate (206) are surrounded by first mounting holes (209) for connecting with related structures. A plurality of groups of springs (210) for buffering are arranged between the first reinforcing plate (205) and the second reinforcing plate (206). A damper (211) for assisting rebound is arranged inside the spring (210). The upper and lower ends of the spring (210) are fixedly connected to the first reinforcing plate (205) and the second reinforcing plate (206), respectively.

6. A protective structure for a mobile phone flexible circuit board according to claim 1, characterized in that: The second protection component (3) comprises a first frame (301), a second frame (302) and a plug post (303); the first frame (301) and the second frame (302) are arranged in two groups opposite to each other; the two groups of first frames (301) are both symmetrically fixedly connected with a plug post (303) for connecting to the second frame (302) at one end side thereof close to each other.

7. A protective structure for a mobile phone flexible circuit board according to claim 6, characterized in that: Two groups of plug holes (304) that are snap-connected to the plug posts (303) are provided at positions corresponding to the plug posts (303) at the left and right ends of the second frame (302), and two groups of second mounting holes (305) that match the first mounting holes (209) are symmetrically provided at the upper and lower ends of the first frame (301).

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