Waterproof flexible earphone PCBA board

Abstract

The utility model discloses a waterproof flexible earphone PCBA board, which belongs to the technical field of PCBA boards, and comprises substrates, element blocks are arranged on the substrates, waterproof layers are coated on the element blocks, elastic parts are arranged between the substrates, the bottoms of the substrates are electrically connected through flexible flat cables, a cable bracket is arranged outside the flexible flat cables, and the flexible flat cables are connected with the waterproof layers. Each elastic part comprises a bottom plate fixed to the corresponding base plate, inclined folded plates are fixed to one end of each bottom plate, an elastic rubber part is connected between the inclined folded plates, a contraction notch is formed in the bottom of each elastic rubber part, the elastic parts are located on the two sides of the upper portion of the wire supporting frame, one pair of base plates further comprises fixing rods fixed to the base plates, and the fixing rods are connected with the elastic rubber parts through the contraction notches. According to the utility model, on the premise of waterproof performance, the flexible function of the PCBA board of the earphone is increased, so that the hardware space arrangement of the earphone is more flexible, and the comfort of the earphone shell can be optimized.

Description

Technical Field

[0001] The utility model specifically relates to a waterproof and flexible headphone PCBA board, belonging to the technical field of PCBA boards. Background Art

[0002] PCBA board refers to printed circuit board assembly, often referring to the assembled finished product including printed circuit board and electronic components. On the basis hardware of the printed circuit board, electronic components for realizing various functions are assembled and fixed. Since headphones need to parse and process audio signals, the quality of the headphone PCBA board is related to the actual use experience of users. There are PCBA boards in the wired headphone wire control part and the earplug part of the headphone. Especially for existing Bluetooth headphones, all functional components are concentrated in the earplug part.

[0003] For example, in the Chinese utility model patent document with the publication number CN220292171U, a waterproof and moisture-proof headphone PCBA board is disclosed. Its waterproof principle is that the outer shell of the headphone is pressed and contacted with the sealing ring. The movement of the sealing ring drives the movement of the first spring. The movement of the first spring makes the sealing ring drive the movement of the first rod. The movement of the first rod drives the movement of the pressing plate. The movement of the pressing plate drives the movement of the rubber block. The movement of the rubber block makes the sealing ring contact with the inside of the headphone outer shell to seal it and prevent water from entering, realizing the functions of waterproofing, moisture-proofing and preventing damage of the headphone PCBA board.

[0004] However, although the technical solution in the above document realizes the sealing of the internal control block by pushing the sealing ring through the first spring, there are many structures outside the control block, resulting in a relatively heavy overall structure. As a headphone worn on the head for portability, it will cause inconvenience for users to wear. Moreover, the fixed structure of the headphone PCBA board has poor flexibility, resulting in a fixed outer shell structure and unable to optimize the wearing comfort. Content of the Utility Model

[0005] The purpose of the utility model is to provide a waterproof and flexible headphone PCBA board aiming at the deficiencies of the prior art, which can increase the flexible function of the headphone PCBA board on the premise of waterproofing, make the hardware space setting of the headphone more flexible, and can optimize the wearing comfort of the headphone shell.

[0006] A waterproof and flexible headphone PCBA board, comprising a substrate, on which there is an element block. The substrate and the element block are both coated with a waterproof layer. The substrate and the element block form a usable PCBA board. An elastic part is installed between the substrates. The elastic part can bend the substrates and reset when not stressed. The bottoms of the substrates are electrically connected by a flexible flat cable. The flexible flat cable is soft itself but has low strength. A wire support frame is arranged outside the flexible flat cable. The wire support frame is used to protect the flexible flat cable and guide the bending of the flexible flat cable when the substrates are bent. The elastic part includes a bottom plate fixed on the substrate. One end of the bottom plate is fixed with an inclined folding plate. The inclined folding plate is inclined to better handle the stressed bending. An elastic rubber part is connected between the inclined folding plates. A contraction notch is opened at the bottom of the elastic rubber part. The elastic part is located on both sides above the wire support frame.

[0007] There are more than three substrates. The complete headphone function is realized by multiple substrates. On one pair of the substrates, there is also a fixing rod fixed on the substrate. The top end of the fixing rod extends obliquely upward. There are two fixing rods on the substrates on the same side. A central rod is connected between the fixing rods.

[0008] In order to facilitate the rotation between the substrates, a rotary connection part is arranged between the fixing rods. The rotary connection part includes a first cylinder and a second cylinder. The first cylinder and the second cylinder are respectively rotated on the central rods on both sides through rotary end blocks. The first cylinder is slidably clamped in the second cylinder. A rotary connection spring is connected between the second cylinder and the first cylinder.

[0009] In order to fix the relative positions of the substrates and the elastic part only provides the function of bending recovery, a connection part is arranged below the elastic part. The connection part includes a first clamping plate and a second clamping plate. The first clamping plate and the second clamping plate are respectively installed on the side walls of the substrates on both sides, and one end of the first clamping plate and the second clamping plate are rotatably clamped with each other.

[0010] A through hole is opened at one end of the first clamping plate. The wire support frame is rotatably connected to the through hole through a shaft rod. A filling cylinder is arranged between the shaft rod and the wire support frame. The filling cylinder is used to prevent the wire support frame from sliding and fill the gap.

[0011] The first clamping plate and the second clamping plate are rotatably clamped through a shaft rod. One end of the shaft rod passes through the second clamping plate, and a filling cylinder is sleeved on the shaft rod. The wire support frame is rotatably clamped on the shaft rod through the filling cylinder. The second clamping plate is located between the first clamping plates, and the corresponding first clamping plate and second clamping plate are respectively close to the two side edges of the substrate. This can enhance the structural strength and make the connection more stable.

[0012] The wire support frame includes a side plate located on one side of the shaft rod. The bottom of the side plate extends to both sides. A wire winding shaft is fixed between the bottom of the inner wall of the side plate and the two ends of the bottom extension. The wire winding shafts on both sides are higher than the wire winding shaft in the middle.

[0013] The technical effects and advantages of the present utility model: On the premise of waterproofing, it can increase the flexible function of the headphone PCBA board. Whether it is the bending or rotation between the substrates, it can protect the corresponding substrates on both sides. When bending, the connecting part can fix the relative positions of the substrates, and the elastic part can play a reset protection role. When the substrates rotate, the first cylinder and the second cylinder of the rotating part can rotate relative to each other, and the internal rotating spring can be stressed and twisted to protect the stable connection of the substrates, thereby making the hardware space setting of the headphone more flexible and optimizing the comfort of the headphone shell. Brief Description of the Drawings

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a structural schematic diagram of the elastic part of the present utility model;

[0016] Figure 3 is a structural schematic diagram of the connecting part of the present utility model;

[0017] Figure 4 is a structural schematic diagram of the wire support frame of the utility model;

[0018] Figure 5 is a structural schematic diagram of the rotating connection part of the present utility model;

[0019] Figure 6 is a cross-sectional structural schematic diagram of the rotating connection part of the present utility model;

[0020] Figure 7 is a structural schematic diagram of Embodiment 2 of the present utility model;

[0021] Figure 8 is a structural schematic diagram of the installation of the wire support frame in Embodiment 2 of the present utility model.

[0022] In the figure: 1. Substrate; 101. Component block; 102. Fixed rod; 2. Elastic part; 201. Bottom plate; 202. Oblique folding plate; 203. Elastic rubber part; 3. Flexible flat cable; 4. Wire support frame; 401. Side plate; 402. Wire winding shaft; 5. Rotating connection part; 501. First cylinder; 502. Second cylinder; 503. Rotating spring; 6. Connecting part; 601. First clamping plate; 602. Second clamping plate; 7. Filling cylinder. Detailed Embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 - 8 As shown, a waterproof and flexible headphone PCBA board includes a substrate 1. Components blocks 101 are mounted on the substrate 1. Waterproof layers are coated on both the substrate 1 and the components blocks 101. The substrate 1 and the components blocks 101 form a usable PCBA board. An elastic part 2 is installed between the substrates 1. The elastic part 2 can bend the substrates 1 and reset when not under force. The bottoms of the substrates 1 are electrically connected by a flexible flat cable 3. The flexible flat cable 3 is soft itself but has low strength. A wire support 4 is provided outside the flexible flat cable 3. The wire support 4 is used to protect the flexible flat cable 3 and guide the bending of the flexible flat cable 3 when the substrates 1 are bent. The elastic part 2 includes a bottom plate 201 fixed on the substrate 1. One end of the bottom plate 201 is fixed with an inclined folding plate 202. The inclined folding plate 202 is inclined to better handle the bending under force. An elastic rubber part 203 is connected between the inclined folding plates 202. A contraction notch is opened at the bottom of the elastic rubber part 203. The elastic part 2 is located on both sides above the wire support 4. There are more than three substrates 1. The complete headphone function is realized by multiple substrates 1. On one pair of substrates 1, there is also a fixing rod 102 fixed on the substrate 1. The top of the fixing rod 102 extends obliquely upward. There are two fixing rods 102 on the same side of the substrate 1. A center rod is connected between the fixing rods 102. In order to facilitate the rotation between the substrates 1, a rotary joint part 5 is provided between the fixing rods 102. The rotary joint part 5 includes a first cylinder 501 and a second cylinder 502. The first cylinder 501 and the second cylinder 502 are respectively rotated on the center rods on both sides through rotating end blocks. The first cylinder 501 is slidably clamped in the second cylinder 502. A rotary spring 503 is connected between the second cylinder 502 and the first cylinder 501.

[0025] In order to fix the relative positions between the substrates 1 and the elastic part only provides the function of bending recovery, a connecting part 6 is provided below the elastic part 2. The connecting part 6 includes a first clamping plate 601 and a second clamping plate 602. The first clamping plate 601 and the second clamping plate 602 are respectively installed on the side walls of the substrates 1 on both sides, and one end of the first clamping plate 601 and the second clamping plate 602 are rotatably clamped with each other. A through hole is opened at one end of the first clamping plate 601. The wire support 4 is rotatably connected to the through hole through a shaft rod. A filling cylinder 7 is provided between the shaft rod and the wire support 4. The filling cylinder 7 is used to prevent the wire support 4 from sliding and fill the gap.

[0026] The wire support 4 includes a side plate 401 located on one side of the shaft rod. The bottom of the side plate 401 extends to both sides. A wire winding shaft 402 is fixed between the bottom of the inner wall of the side plate 401 and the two ends of the bottom extension. The wire winding shafts 402 on both sides are higher than the wire winding shaft 402 in the middle.

[0027] This headphone PCBA board can increase the flexible function of the headphone PCBA board on the premise of waterproofing. Whether it is the bending between the substrates 1 or the rotation between the substrates 1, corresponding protection can be provided for the substrates 1 on both sides. When bending, the connecting part 6 can fix the relative positions between the substrates 1, and the elastic part 2 can play a reset protection role. When the substrates 1 rotate, the first cylinder 501 and the second cylinder 502 of the rotating part can rotate relative to each other, and the internal rotating spring 503 can be stressed and twisted to protect the stable connection of the substrates 1, so that the hardware space setting of the headphone is more flexible and the comfort of the headphone shell can be optimized.

[0028] Embodiment 2

[0029] Please refer to Figure 7 and Figure 8 As shown, in this embodiment, on the basis of Embodiment 1, the distance between the first clamping plate 601 and the second clamping plate 602 is increased, so that the structure is more stable. The first clamping plate 601 and the second clamping plate 602 are rotationally clamped through a shaft rod. One end of the shaft rod passes through the second clamping plate 602, and a filling cylinder 7 is sleeved on the shaft rod. The wire support 4 is rotationally clamped on the shaft rod through the filling cylinder 7. The second clamping plate 602 is located between the first clamping plates 601, and the corresponding first clamping plate 601 and second clamping plate 602 are respectively close to the two side edges of the substrate 1, which can enhance the structural strength and make the connection more stable.

[0030] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0031] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A waterproof and flexible headphone PCBA board, comprising a substrate (1), a component block (101) mounted on the substrate (1), and a waterproof layer coated on the substrate (1) and the component block (101), characterized in that: An elastic part (2) is installed between the substrates (1), the bottoms of the substrates (1) are electrically connected via a flexible flat cable (3), a cable support frame (4) is provided outside the flexible flat cable (3), the elastic part (2) comprises a bottom plate (201) fixed on the substrate (1), an oblique folding plate (202) is fixed at one end of the bottom plate (201), an elastic rubber part (203) is connected between the oblique folding plates (202), a shrinkage notch is provided at the bottom of the elastic rubber part (203), and the elastic part (22) is located on both sides above the cable support frame (4).

2. The waterproof and flexible earphone PCBA board according to claim 1, characterized in that: The base plates (1) are provided with more than three, and a pair of the base plates (1) further comprises a fixing rod (102) fixed on the base plates (1), the top end of the fixing rod (102) extending obliquely upward, and two fixing rods (102) are provided on the base plates (1) on the same side, and a center rod is connected between the fixing rods (102).

3. The waterproof and flexible earphone PCBA board according to claim 2, characterized in that: A screw connection part (5) is provided between the fixed rods (102), and the screw connection part (5) comprises a first cylinder (501) and a second cylinder (502), the first cylinder (501) and the second cylinder (502) are respectively rotated on the central rod on both sides through rotating end blocks, the first cylinder (501) is slidably engaged in the second cylinder (502), and a screw connection spring (503) is connected between the second cylinder (502) and the first cylinder (501).

4. The waterproof and flexible earphone PCBA board according to claim 1, characterized in that: A connecting portion (6) is provided below the elastic portion (2), and the connecting portion (6) comprises a first clamping plate (601) and a second clamping plate (602), wherein the first clamping plate (601) and the second clamping plate (602) are respectively mounted on the side walls of the substrate (1) on both sides, and one end of the first clamping plate (601) and the second clamping plate (602) are rotatably clamped to each other.

5. The waterproof and flexible earphone PCBA board according to claim 4, characterized in that: A through hole is formed at one end of the first clamping plate (601), the wire support frame (4) is rotatably connected to the through hole via a shaft, and a filling tube (7) is provided between the shaft and the wire support frame (4).

6. The waterproof and flexible earphone PCBA board according to claim 4, characterized in that: The first clamping plate (601) and the second clamping plate (602) are rotatably connected via a shaft, one end of the shaft passes through the second clamping plate (602), and a filling tube (7) is sleeved on the shaft, and the wire support frame (4) is rotatably connected to the shaft via the filling tube (7).

7. The waterproof and flexible earphone PCBA board according to claim 6, characterized in that: The wire support frame (4) comprises a side plate (401) located on one side of the shaft rod, the bottom of the side plate (401) extends to both sides, a winding shaft (402) is fixed between the bottom of the inner wall of the side plate (401) and the two ends of the bottom extension, and the winding shafts (402) on both sides are higher than the winding shaft (402) in the middle.

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