Flexible circuit board for foldable mobile phone

Abstract

The utility model belongs to the technical field of flexible circuit boards, in particular to a flexible circuit board for a foldable mobile phone, which comprises two fixing plates, opposite sides of the two fixing plates are fixedly connected with a first heat conducting rod and a second heat conducting rod respectively, and the first heat conducting rod and the second heat conducting rod are symmetrically arranged. A flexible circuit board body is placed between the first heat conduction rod and the second heat conduction rod, a protrusion is arranged on one side of the first heat conduction rod, a containing groove is formed in the second heat conduction rod, and the protrusion is matched with the containing groove. According to the utility model, through the first heat conduction rod and the second heat conduction rod and the close contact between the first heat conduction rod and the second heat conduction rod and the flexible circuit board body, when the flexible circuit board body generates heat, the heat can be conducted through the multiple first heat conduction rods and the multiple second heat conduction rods, the temperature of the flexible circuit board body is reduced, and the cooling effect is achieved.

Description

Technical Field

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

[0002] Flexible circuit boards, also known as "soft boards", are printed circuits made of flexible insulating substrates. Flexible circuits provide excellent electrical properties, can meet the design needs of smaller and higher density installations, and also help reduce assembly processes and enhance reliability. Flexible circuit boards are the only solution to meet the miniaturization and mobility requirements of electronic products.

[0003] The flexible circuit board inside the foldable phone will generate heat when working. However, since the space inside the foldable phone is connected to the outside world only through heat dissipation holes for air circulation, the heat generated on the flexible circuit board inside the foldable phone is conducted slowly. The temperature of the flexible circuit board is in a high temperature state for a long time, which can easily damage the internal circuit and thus affect the performance of the circuit board. Summary of the invention

[0004] In order to solve the above problems, the utility model proposes a flexible circuit board for a foldable mobile phone, so as to more accurately solve the problem that the flexible circuit board inside the foldable mobile phone mentioned above will generate heat when working, but because the space inside the foldable mobile phone and the outside world are only ventilated through the heat dissipation holes, the heat generated on the flexible circuit board in the foldable mobile phone is conducted slowly, and the temperature of the flexible circuit board is in a high temperature state for a long time, which is easy to damage the internal circuit, thereby affecting the performance of the circuit board.

[0005] The utility model is realized by the following technical solutions:

[0006] The utility model provides a flexible circuit board for a foldable mobile phone, comprising two fixing plates, opposite sides of the two fixing plates are respectively fixedly connected to a first heat-conducting rod and a second heat-conducting rod, the first heat-conducting rod and the second heat-conducting rod are symmetrically arranged, a flexible circuit board body is placed between the first heat-conducting rod and the second heat-conducting rod, a protrusion is provided on one side of the first heat-conducting rod, a placement groove is provided on the second heat-conducting rod, the protrusion matches the placement groove, the flexible circuit board body is placed in the placement groove, and a plug-in assembly is provided between the first heat-conducting rod and the second heat-conducting rod.

[0007] Furthermore, one side of the two fixing plates away from the flexible circuit board is coated with an insulating coating, the fixing plates are made of thermally conductive silicone material, and the fixing plates are elastic.

[0008] Furthermore, adjacent first heat-conducting rods and adjacent second heat-conducting rods are fixedly connected with reinforcing ribs, and the reinforcing ribs have a certain degree of elasticity.

[0009] Furthermore, the reinforcing ribs are made of thermally conductive silicone.

[0010] Furthermore, the two fixing plates are each provided with a plurality of heat dissipation holes, and the heat dissipation holes are arranged in an array.

[0011] Furthermore, the fixing plate has the same shape as the flexible circuit board body, and the size of the fixing plate is larger than the size of the flexible circuit board body.

[0012] Furthermore, the plug-in assembly includes two fixing rods, the two fixing rods are fixedly connected to the first heat-conducting rod, the outer sides of the fixing rods are fixedly connected to an elastic rubber sleeve, the elastic rubber sleeve is elliptical, and a slot is provided on the fixing rod, the shape of the slot is similar to that of the elastic rubber sleeve.

[0013] Furthermore, a guide arc surface is provided on the side surface of the slot.

[0014] Beneficial effects of the utility model:

[0015] The utility model provides a flexible circuit board for a foldable mobile phone. The first heat-conducting rod and the second heat-conducting rod are arranged. The flexible circuit board body is spread out in a placement groove on a plurality of second heat-conducting rods. The first heat-conducting rod and the second heat-conducting rod are in contact with each other to press the flexible circuit board body. The first heat-conducting rod and the second heat-conducting rod are in close contact with the flexible circuit board body. When the flexible circuit board body generates heat, the heat can be conducted through the plurality of first heat-conducting rods and the second heat-conducting rods to reduce the temperature of the flexible circuit board body and play a cooling role. At the same time, the flexible circuit board body is held up by the first heat-conducting rod and the second heat-conducting rod. Except for the position in contact with the first heat-conducting rod and the second heat-conducting rod, other positions can also dissipate heat to the outside, further improving the efficiency of heat conduction and achieving the purpose of rapid heat dissipation.

[0016] A flexible circuit board for a foldable mobile phone is provided. A plug-in assembly is provided. A fixing rod on a first heat-conducting rod is inserted into a slot on a second heat-conducting rod. When inserted, an elastic rubber sleeve is affected by the shape of the slot and first deforms and recovers. After recovery, the elastic rubber sleeve is stuck in the slot and prevents the fixing rod from leaving through friction, thereby fixing the first heat-conducting rod and the second heat-conducting rod and fixing a fixing plate at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the first heat conducting rod and the second heat conducting rod of the utility model;

[0019] Figure 3 It is a cross-sectional schematic diagram of the first heat conducting rod and the second heat conducting rod of the utility model;

[0020] Figure 4It is a schematic diagram of the structure of the reinforcing rib of the utility model;

[0021] Figure 5 for Figure 3 Schematic diagram of the structure enlarged at point A in the middle.

[0022] The accompanying drawings are marked as follows: 1. fixing plate; 2. first heat-conducting rod; 3. second heat-conducting rod; 4. flexible circuit board body; 5. protrusion; 6. placement groove; 7. plug-in assembly; 71. fixing rod; 72. elastic rubber sleeve; 73. slot; 74. guide arc surface; 8. reinforcing rib; 9. heat dissipation hole. DETAILED DESCRIPTION

[0023] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0024] Please refer to Figure 1-Figure 5 The utility model proposes a flexible circuit board for a foldable mobile phone, comprising two fixing plates 1, the opposite sides of the two fixing plates 1 are respectively fixedly connected to the first heat-conducting rod 2 and the second heat-conducting rod 3, the first heat-conducting rod 2 and the second heat-conducting rod 3 are symmetrically arranged, a flexible circuit board body 4 is placed between the first heat-conducting rod 2 and the second heat-conducting rod 3, a protrusion 5 is provided on one side of the first heat-conducting rod 2, a placement groove 6 is provided on the second heat-conducting rod 3, the protrusion 5 cooperates with the placement groove 6, the flexible circuit board body 4 is placed in the placement groove 6, a plug-in component 7 is provided between the first heat-conducting rod 2 and the second heat-conducting rod 3, the flexible circuit board body 4 is located between the two fixing plates 1, the two fixing plates 1 are protected from both sides of the flexible circuit board body 4 to prevent wear and collision, the flexible circuit board body 4 is spread out in the placement grooves 6 on the plurality of second heat-conducting rods 3, the plurality of placement grooves 6 form an area that cooperates with the flexible circuit board body 4, and the flexible circuit board body is placed After the flexible circuit board body 4 is formed, the two fixing plates 1 are merged, the first heat-conducting rod 2 and the second heat-conducting rod 3 are positioned correspondingly, the first heat-conducting rod 2 and the second heat-conducting rod 3 are in contact one by one, the flexible circuit board body 4 is pressed, and the flexible circuit board body 4 is unfolded. At this time, the protrusion 5 of the first heat-conducting rod 2 is pressed on the flexible circuit board body 4, the first heat-conducting rod 2 and the second heat-conducting rod 3 are fixed by the plug-in assembly 7, the first heat-conducting rod 2 and the second heat-conducting rod 3 are in close contact with the flexible circuit board body 4, when the flexible circuit board body 4 generates heat, the heat can be conducted through the multiple first heat-conducting rods 2 and the second heat-conducting rods 3, so as to reduce the temperature of the flexible circuit board body 4 and play a cooling role. At the same time, the flexible circuit board body 4 is held up by the first heat-conducting rod 2 and the second heat-conducting rod 3, except for the position in contact with the first heat-conducting rod 2 and the second heat-conducting rod 3, other positions can also dissipate heat to the outside, further improving the efficiency of heat conduction and achieving the purpose of rapid heat dissipation.

[0025] like Figure 1As shown, the two fixing plates 1 are coated with an insulating coating on one side away from the flexible circuit board. The fixing plates 1 are made of thermally conductive silicone material. At the same time, the fixing plates 1 are elastic. The first thermally conductive rod 2 and the second thermally conductive rod 3 conduct the material of the flexible circuit board body 4 to the two fixing plates 1, and the heat is dissipated to the outside through the two fixing plates 1. The heat dissipation area is large, which is conducive to improving the heat dissipation efficiency.

[0026] like Figure 2 He Ru Figure 3 As shown, adjacent first heat-conducting rods 2 and adjacent second heat-conducting rods 3 are fixedly connected with reinforcing ribs 8, and the reinforcing ribs 8 have a certain elasticity. The flexible circuit board body 4 is elastic and can be bent. When bending, the reinforcing ribs 8 will also bend, but the elasticity of the reinforcing ribs 8 is greater than that of the flexible circuit board body 4. After the flexible circuit board body 4 is released, the reinforcing ribs 8 can assist the flexible circuit board body 4 to recover. At the same time, when the bending is too large, the elastic potential energy of the reinforcing ribs 8 increases to prevent further bending, thereby preventing the flexible circuit board body 4 from breaking the internal circuit due to excessive bending.

[0027] like Figure 2 He Ru Figure 3 As shown, the material of the reinforcing rib 8 is thermally conductive silicone, and the reinforcing rib 8 is thermally conductive silicone, which can conduct heat between adjacent first thermally conductive rods 2 and adjacent second thermally conductive rods 3. The positions where the flexible circuit board body 4 generates heat are different, and the temperatures at different positions are different. Through the reinforcing rib 8 and the first thermally conductive rod 2 and the second thermally conductive rod 3, the heat is conducted in a mesh shape to quickly reduce the temperature of the heat generating position.

[0028] like Figure 1 As shown, both fixing plates 1 are provided with a plurality of heat dissipation holes 9, which are arranged in an array to improve the air flow at the position of the flexible circuit board body 4 and improve the efficiency of heat dissipation of the fixing plates 1 to the outside.

[0029] like Figure 1 As shown, the fixing plate 1 has the same shape as the flexible circuit board body 4 , and the size of the fixing plate 1 is larger than that of the flexible circuit board body 4 . The fixing plate 1 covers the flexible circuit board body 4 to protect it from both sides.

[0030] like Figure 3 He Ru Figure 5As shown, the plug-in assembly 7 includes two fixing rods 71, and the two fixing rods 71 ​​are fixedly connected to the first heat-conducting rod 2. The outer side of the fixing rod 71 is fixedly connected to the elastic rubber sleeve 72. The elastic rubber sleeve 72 is elliptical. A slot 73 is provided on the fixing rod 71. The shape of the slot 73 is similar to that of the elastic rubber sleeve 72. The fixing rod 71 on the first heat-conducting rod 2 is inserted into the slot 73 on the second heat-conducting rod 3. When inserted, the elastic rubber sleeve 72 is affected by the shape of the slot 73 and deforms and recovers first. After recovery, the elastic rubber sleeve 72 is stuck in the slot 73, and through friction, the fixing rod 71 is blocked from leaving, so that the first heat-conducting rod 2 and the second heat-conducting rod 3 are fixed, and the fixing plate 1 is fixed at the same time.

[0031] like Figure 5 As shown, a guide arc surface 74 is provided on the side of the slot 73 to provide guidance for the fixing rod 71 when inserted into the slot 73 , making it easier for the fixing rod 71 to be inserted into the slot 73 .

[0032] Working principle: the flexible circuit board body 4 is spread out in the placement grooves 6 on the multiple second heat-conducting rods 3, and the multiple placement grooves 6 form an area that matches the flexible circuit board body 4. After the flexible circuit board body 4 is placed, the two fixing plates 1 are merged at this time, and the first heat-conducting rod 2 corresponds to the second heat-conducting rod 3 in position. The fixing rod 71 on the first heat-conducting rod 2 is inserted into the slot 73 on the second heat-conducting rod 3. During insertion, the elastic rubber sleeve 72 is affected by the shape of the slot 73, and first deforms and recovers. After recovery, the elastic rubber sleeve 72 is stuck in the slot 73. The first heat-conducting rod 2 and the second heat-conducting rod 3 are both in close contact with the flexible circuit board body 4. When the flexible circuit board body 4 generates heat, the heat can be conducted through the multiple first heat-conducting rods 2 and the second heat-conducting rods 3. When bending, the reinforcing ribs 8 will also bend, but the elastic performance of the reinforcing ribs 8 is greater than that of the flexible circuit board body 4. After the flexible circuit board body 4 is released, the reinforcing ribs 8 can assist the flexible circuit board body 4 in recovery. At the same time, when the bending is too large, the elastic potential energy of the reinforcing ribs 8 increases to prevent further bending.

[0033] Of course, the present utility model may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present utility model.

Claims

1. A flexible circuit board for a foldable mobile phone, characterized in that: It includes two fixing plates, and the opposite sides of the two fixing plates are respectively fixedly connected to the first heat-conducting rod and the second heat-conducting rod, the first heat-conducting rod and the second heat-conducting rod are symmetrically arranged, a flexible circuit board body is placed between the first heat-conducting rod and the second heat-conducting rod, a protrusion is provided on one side of the first heat-conducting rod, and a placement groove is provided on the second heat-conducting rod, the protrusion cooperates with the placement groove, the flexible circuit board body is placed in the placement groove, and a plug-in component is provided between the first heat-conducting rod and the second heat-conducting rod.

2. A flexible circuit board for a foldable mobile phone according to claim 1, characterized in that: The two fixing plates are coated with an insulating coating on one side away from the flexible circuit board. The fixing plates are made of heat-conducting silicone and are elastic.

3. A flexible circuit board for a foldable mobile phone according to claim 2, characterized in that: Adjacent first heat-conducting rods and adjacent second heat-conducting rods are fixedly connected with reinforcing ribs, and the reinforcing ribs have a certain degree of elasticity.

4. A flexible circuit board for a foldable mobile phone according to claim 3, characterized in that: The reinforcing rib is made of thermally conductive silicone.

5. The flexible circuit board for a foldable mobile phone according to claim 3, characterized in that: The two fixing plates are both provided with a plurality of heat dissipation holes, which are arranged in an array.

6. A flexible circuit board for a foldable mobile phone according to claim 1, characterized in that: The fixing plate has the same shape as the flexible circuit board body, and the size of the fixing plate is larger than the size of the flexible circuit board body.

7. A flexible circuit board for a foldable mobile phone according to claim 1, characterized in that: The plug-in assembly includes two fixing rods, which are fixedly connected to the first heat-conducting rod. The outer sides of the fixing rods are fixedly connected to an elastic rubber sleeve, which is elliptical. The fixing rods are provided with a slot, and the shape of the slot is similar to that of the elastic rubber sleeve.

8. A flexible circuit board for a foldable mobile phone according to claim 7, characterized in that: A guiding arc surface is provided on the side surface of the slot.

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