A waterproof key structure and intercom

Abstract

A waterproof key structure includes a main shell, a main board, a key cap and a conductive part, wherein the main board is arranged in the main shell and is fixedly connected to the main shell as a whole, one end of the key cap is connected to the conductive part, and the other end of the key cap protrudes out of the main shell, the conductive part is arranged in the main shell and is sealed against the main shell, and the conductive part is used to connect the first key circuit on the main board under the drive of the key cap. The main board and the key circuit carrying the key in the waterproof key structure provided by the present invention are connected as a whole through the conductive part with a sealing effect, so as to achieve a strong waterproof performance at a relatively low cost, and prevent water from entering the main shell when the user operates the key cap.

Description

Technical Field

[0001] The invention relates to the technical field of buttons, and in particular to a waterproof button structure and an intercom. Background Art

[0002] A button is a common control electrical component, which is used to input specific instructions to interact with electronic devices, such as controlling the electronic device to turn on or off. Some special electronic devices that need to be used in harsh environments, such as walkie-talkies, have high requirements for the waterproof performance of electronic devices. In order to make the buttons on them meet the IPX7 waterproof requirements, the existing technical solutions are generally costly. Summary of the invention

[0003] The present invention provides a waterproof key structure with low cost and capable of meeting IPX7 waterproof requirements, comprising a main shell, a main board body, a key cap part and a conducting part, wherein the main board body is arranged in the main shell and is fixedly connected with the main shell as a whole, one end of the key cap part is connected with the conducting part, and the other end of the key cap part protrudes out of the main shell, the conducting part is arranged in the main shell and is sealed against the main shell, and the conducting part is used for connecting a first key circuit on the main shell body under the drive of the key cap part.

[0004] Furthermore, the conducting part includes a sealing part and a firing part, the sealing part is padded between the main board body and the main shell, one end of the sealing part facing the main shell abuts against and seals the main shell, one end of the sealing part facing the main board body is connected to the main board body as a whole, the firing part is arranged between the keycap part and the main board body and is fixedly connected to the sealing part as a whole, the keycap part is installed on one end of the firing part, and the other end of the firing part is used to fire the first key circuit.

[0005] Furthermore, the conducting part also includes a first elastic part, which is a leather cup arranged on the sealing part, the inner edge of the first elastic part is connected to the firing part as a whole, the outer edge of the first elastic part is connected to the sealing part as a whole, the first elastic part can store elastic force when the firing part moves toward the main board body, and the first elastic part can also release elastic force to push the firing part away from the main board body.

[0006] Further, the main shell body includes a first channel for accommodating the keycap portion, the keycap portion is arranged at a first end of the first channel, a transition fit is formed between the keycap portion and an inner wall of the first channel, the keycap portion can slide in the first channel, the main board body and the sealing portion are arranged at a second end of the first channel, and the first channel, the keycap portion and the firing portion are coaxially arranged.

[0007] Furthermore, the key cap portion includes a first groove, the first groove is recessed on a side of the key cap portion facing the main board body, and the firing portion is embedded in the first groove and forms an interference fit with the first groove.

[0008] Furthermore, the main board body includes a first board body and a second board body, the first board body and the second board body are arranged vertically, the second board body is used to abut against the sealing part, the first button circuit is arranged on the second board body, and the first board body and the second board body are electrically connected.

[0009] Furthermore, the main plate body further includes reinforcing ribs, which are arranged at an angle formed by the first plate body and the second plate body and are respectively fixedly connected to the first plate body and the second plate body as a whole.

[0010] Furthermore, the sealing portion is sandwiched between the second plate body and the main shell.

[0011] Furthermore, it also includes a second elastic part, which is arranged on the side of the second plate body facing the conductive part. The second elastic part is used to store elastic force and connect the first key circuit when the second elastic part itself is squeezed. The second elastic part is also used to rebound and cut off the first key circuit after the second elastic part itself is squeezed.

[0012] Furthermore, the present invention also includes an intercom, which includes the aforementioned waterproof button structure.

[0013] The main board body and the key circuit carrying the keys in the waterproof key structure provided by the present invention are connected as a whole through a conductive part with a sealing effect, thereby achieving a strong waterproof performance at a relatively low cost and preventing water from entering the main shell when the user operates the key cap part. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 An exploded schematic diagram of the waterproof button structure provided by the present invention.

[0015] Figure 2 It is a cross-sectional view of the waterproof button structure in the present invention.

[0016] Figure 3 Schematic diagram of the main board body in the present invention.

[0017] Figure 4 Schematic diagram of the conducting part in the present invention. DETAILED DESCRIPTION

[0018] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the present invention is described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0019] It should be noted that the terms "first", "second", "third", "fourth", etc. in the description and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0020] See also Figure 1 to Figure 2 The waterproof key structure of the present invention includes a main shell 1, a main board body 2, a key cap part 3 and a conducting part 4. The main board body 2 is arranged in the main shell 1 and is fixedly connected to the main shell 1 as a whole. One end of the key cap part 3 is connected to the conducting part 4, and the other end of the key cap part 3 protrudes out of the main shell 1. The conducting part 4 is arranged in the main shell 1 and is sealed against the main shell 1. The conducting part 4 is used to connect the first key circuit on the main board body 2 under the drive of the key cap part 3. Specifically, in the present embodiment, the key cap portion 3 includes a first groove 31, which is recessed on a side of the key cap portion 3 facing the main board body 2, and one end of the conductive portion 4 is embedded in the first groove 31 and forms an interference fit with the first groove 31; the main board body 2 and the first key circuit thereon are arranged in a space surrounded by the main housing 1, and the main board body 2 is a PCB board carrying a functional module and a control module of electrical components; the connection and disconnection of the first key circuit correspond to different key functions, for example, when the first key circuit is connected, the intercom function of the intercom is turned on and recording starts, and when the first key circuit is disconnected, the recording ends and the recording signal is transmitted; the portion of the key cap portion 3 located outside the main housing 1 can move into the main housing 1 under the pressure of the user, and the conductive portion 4 located between the key cap portion 3 and the main board body 2 can deform and move into the main housing 1 together with the key cap portion 3 until the first key circuit is connected, and since the conductive portion 4 is made of an insulating material with a certain elasticity, such as silicone, plastic, etc., the seal will not be damaged during its deformation and movement. The main board body 2 and the key circuit carrying the keys in the present invention are connected as one through the conductive part 4 with a sealing effect, thereby achieving a strong waterproof performance at a relatively low cost and preventing water from entering the main housing 1 when the user operates the key cap part 3.

[0021] Please also read Figure 3, further, the main board 2 includes a first board 21 and a second board 22, the first board 21 and the second board 22 are arranged in the vertical direction, the second board 22 is used to abut against the sealing part 41, the first key circuit is arranged on the second board 22, and the first board 21 and the second board 22 are electrically connected. Specifically, the first board 21 and the second board 22 can be used to carry control modules and functional modules of electrical components, respectively, both of which are PCB boards, for example: a processor is arranged on the first board 21, and a communication module is arranged on the second board 22. A reinforcing rib 23 is arranged between the first board 21 and the second board 22, and the reinforcing rib 23 is arranged at the angle formed by the first board 21 and the second board 22 and is respectively fixedly connected to the first board 21 and the second board 22 as a whole. A second elastic part 5 is arranged on the side of the second plate 22 facing the conducting part 4. The second elastic part 5 is used to store elastic force and connect the first key circuit when it is squeezed. The second elastic part 5 is also used to rebound and cut off the first key circuit after it is squeezed. In this embodiment, the second elastic part 5 is a pot piece, which will rebound naturally after deformation. The present invention provides a mounting platform for the conducting part 4 by vertically setting the first plate 21 and the second plate 22, avoiding the additional arrangement of other sealing devices in the main housing 1, and also expanding the circuit board area of ​​the control module and the functional module of the electrical component, with high space utilization.

[0022] Please also read Figure 4Furthermore, the conducting part 4 in the present invention includes a sealing part 41, a firing part 42 and a first elastic part 43, the sealing part 41 is padded between the main board body 2 and the main shell 1, one end of the sealing part 41 facing the main shell 1 abuts against and seals the main shell 1, one end of the sealing part 41 facing the main board body 2 is connected to the main board body 2 as a whole, the firing part 42 is arranged between the keycap part 3 and the main board body 2 and is fixedly connected to the sealing part 41 as a whole, one end of the firing part 42 is installed with the keycap part 3, and the other end of the firing part 42 is used to fire the first key circuit, the first elastic part 43 is a leather cup arranged on the sealing part 41, the inner edge of the first elastic part 43 is connected to the firing part 42 as a whole, and the outer edge of the first elastic part 43 is connected to the sealing part 41 as a whole, the first elastic part 43 can store elastic force when the firing part 42 moves toward the main board body 2, and the first elastic part 43 can also release the elastic force to push the firing part 42 away from the main board body 2. Specifically, in the present embodiment, the main shell 1 includes a first channel 11 for accommodating the keycap portion 3, the keycap portion 3 is arranged at the first end of the first channel 11, and a transition fit is formed between the keycap portion 3 and the inner wall of the first channel 11, and the keycap portion 3 can slide in the first channel 11, the main board 2 and the sealing portion 41 are arranged at the second end of the first channel 11, and the first channel 11, the keycap portion 3 and the firing portion 42 are coaxially arranged; the sealing portion 41 is an annular waterproof rib, and the two ends of the sealing portion 41 are respectively sealed against the second board 22 and the main shell 1; the firing portion 42 is a columnar silicone structure, one end of the firing portion 42 is installed in the keycap portion 3, and the other end is against the second elastic portion 5; the first elastic portion 43 is against the firing portion 42 One end of the connection is located in the middle of the firing part 42, that is, the first elastic part 43 on the outside of the sealing part 41 and the firing part 42 and the keycap part 3 form a first enclosed space, and the first enclosed space is located in the first channel 11, which may be flooded when the keycap part 3 is pressed; the inner side of the sealing part 41 and the second plate body 22 form a second enclosed space, and the second enclosed space is located between the space enclosed by the main shell 1 and the first channel 11, the second elastic part 5 and the first key circuit part are located in the second enclosed space, and the second enclosed space and the first enclosed space and the space enclosed by the main shell 1 are independent cavities. Therefore, even if water enters the first enclosed space, it will not affect the second enclosed space and / or the space enclosed by the main shell 1.

[0023] Furthermore, the present invention also includes an intercom, which includes the aforementioned waterproof button structure.

[0024] In summary, the main board body and the key circuit carrying the keys in the waterproof key structure provided by the present invention are connected as a whole through a conductive part with a sealing effect, thereby achieving strong waterproof performance at a relatively low cost and preventing water from entering the main shell when the user operates the key cap part.

[0025] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A waterproof key structure, characterized in that: The invention comprises a main shell (1), a main shell (2), a key cap portion (3) and a conducting portion (4), wherein the main shell (2) is arranged in the main shell (1) and is fixedly connected to the main shell (1) as a whole, one end of the key cap portion (3) is connected to the conducting portion (4), and the other end of the key cap portion (3) protrudes out of the main shell (1), the conducting portion (4) is arranged in the main shell (1) and is sealed against the main shell (1), and the conducting portion (4) is used to connect a first key circuit on the main shell (2) under the drive of the key cap portion (3), and the conducting portion (4) comprises a sealing portion (41) and a firing portion (42), the sealing portion (41) is cushioned between the main shell (2) and the main shell (1), one end of the sealing portion (41) facing the main shell (1) is sealed against the main shell (1), and the sealing portion (41) faces the main shell (2) One end of the firing portion (42) is connected to the main board (2) as a whole, the firing portion (42) is arranged between the key cap portion (3) and the main board (2) and is fixedly connected to the sealing portion (41) as a whole, one end of the firing portion (42) is mounted with the key cap portion (3), and the other end of the firing portion (42) is used to fire the first key circuit, the conducting portion (4) further comprises a first elastic portion (43), the first elastic portion (43) is a leather cup arranged on the sealing portion (41), the inner edge of the first elastic portion (43) is connected to the firing portion (42) as a whole, the outer edge of the first elastic portion (43) is connected to the sealing portion (41) as a whole, the first elastic portion (43) can store elastic force when the firing portion (42) moves toward the main board (2), and the first elastic portion (43) can also release elastic force to push the firing portion (42) away from the main board (2).

2. The waterproof key structure according to claim 1, characterized in that: The main housing (1) comprises a first channel (11) for accommodating the key cap portion (3); the key cap portion (3) is arranged at a first end of the first channel (11); a transition fit is formed between the key cap portion (3) and an inner wall of the first channel (11); the key cap portion (3) is capable of sliding in the first channel (11); the main housing (2) and the sealing portion (41) are arranged at a second end of the first channel (11); and the first channel (11), the key cap portion (3) and the firing portion (42) are coaxially arranged.

3. The waterproof key structure according to claim 2, characterized in that: The key cap portion (3) comprises a first groove (31), the first groove (31) being recessed on a side of the key cap portion (3) facing the main board body (2), and the firing portion (42) being embedded in the first groove (31) and forming an interference fit with the first groove (31).

4. The waterproof key structure according to claim 1, characterized in that: The main board (2) comprises a first board (21) and a second board (22); the first board (21) and the second board (22) are arranged vertically; the second board (22) is used to abut against the sealing portion (41); the first key circuit is arranged on the second board (22); and the first board (21) and the second board (22) are electrically connected.

5. The waterproof key structure according to claim 4, characterized in that: The main plate body (2) further comprises a reinforcing rib (23), wherein the reinforcing rib (23) is arranged at an angle formed by the first plate body (21) and the second plate body (22) and is respectively fixedly connected to the first plate body (21) and the second plate body (22) as a whole.

6. The waterproof key structure according to claim 4, characterized in that: The sealing portion (41) is sandwiched between the second plate body (22) and the main shell (1).

7. The waterproof key structure according to claim 4, characterized in that: The invention also comprises a second elastic part (5), wherein the second elastic part (5) is arranged on a side of the second plate body (22) facing the conducting part (4), and the second elastic part (5) is used to store elastic force and connect the first key circuit when the second elastic part (5) is squeezed, and the second elastic part (5) is also used to rebound and disconnect the first key circuit after the second elastic part (5) is squeezed.

8. A walkie-talkie, characterized in that: It comprises the waterproof key structure as described in any one of claims 1 to 7.

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