Shell and key structure thereof

Abstract

The invention discloses a shell and a key structure thereof, the key structure comprises a key and a key switch for receiving a pressing force of the key and outputting a switching signal, and the key switch is electrically connected with a control circuit board; a bin body is arranged on the inner wall of the shell, a first groove is formed in the side face of the bin body, and the key switch is arranged in the first groove; a through hole is formed in the connecting position of the first groove and the inner wall of the shell, and the through hole penetrates through the inner wall of the shell so that the first groove can be communicated with the outside. The first end of the key is a pressing force input end, and the stroke of the second end of the key can reach the pressing position of the key switch through the through hole; the inner wall portions, close to the two ends of the key switch, of the inner wall of the first groove are first arc-shaped faces, and the first arc-shaped faces are used for limiting the key switch. According to the invention, shaking of the end part of the key switch can be limited, and meanwhile, a space convenient for mounting and dismounting the key switch is reserved.

Description

Technical Field

[0001] The present invention relates to the technical field of key structures, and in particular to a housing and a key structure thereof. Background Art

[0002] In the field of smaller headphone charging boxes, the prior art 202222555958.X discloses a headphone charging box and an electronic device, which uses a button plus an FPC to connect to the circuit board below. However, in this patent, the button is fixed by bonding and the FPC is very long, and the button is prone to loosening during daily shaking of the device.

[0003] In the field of watches, due to the thin thickness, special attention should be paid to the design of buttons installed on the side. Prior art 201520759336.6 discloses a smart watch strap assembly and a smart watch, which is connected to the main circuit board through a flexible circuit board, and buttons are directly installed on the flexible circuit board. The buttons are extended out of the button holes to fix the position of the buttons, which is also prone to looseness. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a housing and a key structure thereof, which can limit the shaking of the end of a key switch.

[0005] In order to solve the above technical problems, the present invention discloses a key structure arranged on a housing in a first aspect, comprising a key and a key switch receiving a pressing force of the key to output a switch signal, wherein the key switch is electrically connected to a control circuit board;

[0006] A storage body is provided on the inner wall of the housing, a first groove is provided on the side of the storage body, and the key switch is provided in the first groove;

[0007] A through hole is provided at the connection between the first groove and the inner wall of the shell, and the through hole passes through the inner wall of the shell to connect the first groove to the outside; the first end of the key is a pressing force input end, and the travel of the second end of the key can reach the pressing position of the key switch through the through hole;

[0008] The inner wall portions of the first groove close to the two ends of the key switch are first arcuate surfaces, and the first arcuate surfaces are used to limit the key switch.

[0009] As an optional implementation, in the first aspect of the present invention, the first inner wall surface of the first groove fits the back surface of the key switch, and the two ends of the first inner wall surface are respectively connected to the corresponding first arc-shaped surface;

[0010] The first arc surface surrounds the end of the key switch, and a first cavity is formed between the end of the key switch and the first arc surface. The first cavity is used for installation and removal of the key switch.

[0011] As another optional embodiment, in the first aspect of the present invention, it also includes an arc-shaped buckle; a second groove is provided on the second end of the button, and the arc-shaped buckle is sleeved on the second groove; the size of the arc-shaped buckle is designed to be unable to pass through the through hole.

[0012] As another optional embodiment, in the first aspect of the present invention, the inner wall portion of the inner wall of the first groove close to the two ends of the arc-shaped buckle is set as a second arc-shaped surface, and a second cavity is formed between the end of the arc-shaped buckle and the second arc-shaped surface, and the second cavity is used for the installation and disassembly of the arc-shaped buckle.

[0013] As another optional embodiment, in the first aspect of the present invention, one end of the second arcuate surface is connected to the first arcuate surface on the same side, and the other end of the second arcuate surface is connected to the inner wall of the outer shell.

[0014] As another optional embodiment, in the first aspect of the present invention, the shell includes a first shell and a second shell, the storage body is arranged on the inner wall of the first shell, and the first groove is provided on the side of the storage body facing the second shell.

[0015] As another optional implementation, in the first aspect of the present invention, the first end of the button is further provided with a spring for resetting the button.

[0016] As another optional implementation, in the first aspect of the present invention, a sealing ring is further provided between the first end and the second end of the button, and the sealing ring is located in the through hole and has an interference fit with the through hole.

[0017] As another optional implementation, in the first aspect of the present invention, the key switch is electrically connected to the control circuit board via a flexible circuit board.

[0018] The second aspect of the present invention discloses a housing, on which the key structure as described in the first aspect of the present invention is provided.

[0019] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0020] The embodiment of the present invention limits the shaking of the end of the key switch by arranging a housing on the inner wall of the shell, the housing having a groove for accommodating the key switch, and designing an arc surface on the groove near the end of the key switch; in addition, the design of the arc surface reserves space for installing and removing the key switch in the groove, which is convenient for clamping and placing by tools such as automatic manipulators or manual tweezers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 is a structural schematic diagram of a key structure disclosed in an embodiment of the present invention;

[0023] Figure 2 is a schematic cross-sectional structure diagram of a key structure disclosed in an embodiment of the present invention;

[0024] Figure 3 It is a partial structural schematic diagram of a key structure disclosed in an embodiment of the present invention;

[0025] Figure 4 is a structural schematic diagram of a key in a key structure disclosed in an embodiment of the present invention;

[0026] Figure 5 It is a structural schematic diagram of an arc-shaped buckle in a key structure disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1

[0029] See also Figures 1 to 5 , the embodiment of the present invention discloses a key structure arranged on a housing 3, comprising a key 1 and a key switch 2 receiving a pressing force of the key 1 and outputting a switch signal, wherein the key switch 2 is electrically connected to a control circuit board;

[0030] A housing 4 is provided on the inner wall of the housing 3, a first groove 41 is provided on the side of the housing 4, and the key switch 2 is provided in the first groove 41;

[0031] A through hole 31 is provided at the connection between the first groove 41 and the inner wall of the housing 3, and the through hole 31 passes through the inner wall of the housing 3 so that the first groove 41 is connected to the outside; the first end of the button 1 is a pressing force input end, and the travel of the second end of the button 1 can reach the pressing position of the button switch 2 through the through hole 31;

[0032] The inner wall portions of the first groove 41 close to the two ends of the key switch 2 are first arcuate surfaces 411 , and the first arcuate surfaces 411 are used to limit the key switch 2 .

[0033] The embodiment of the present invention limits the shaking of the end of the key switch by arranging a housing on the inner wall of the shell, the housing having a groove for accommodating the key switch, and designing an arc surface on the groove near the end of the key switch; in addition, the design of the arc surface reserves space for installing and removing the key switch in the groove, which is convenient for clamping and placing by tools such as automatic manipulators or manual tweezers.

[0034] In an optional embodiment, the first inner wall surface 412 of the first groove 41 is in contact with the back surface of the key switch 2, and both ends of the first inner wall surface 412 are respectively connected to the corresponding first arc-shaped surface 411;

[0035] The first arc surface 411 surrounds the end of the key switch 2 , and a first cavity is formed between the end of the key switch 2 and the first arc surface 411 . The first cavity is used for installation and removal of the key switch 2 .

[0036] In another optional embodiment, it further includes an arc-shaped buckle 5; a second groove 11 is provided on the second end of the button 1, and the arc-shaped buckle 5 is sleeved on the second groove 11; the size of the arc-shaped buckle 5 is designed to be unable to pass through the through hole 31.

[0037] In another optional embodiment, the inner wall portion of the first groove 41 near the two ends of the arc buckle 5 is set as a second arc surface 413, and a second cavity is formed between the end of the arc buckle 5 and the second arc surface 413, and the second cavity is used for the installation and disassembly of the arc buckle 5.

[0038] In this embodiment, the stepped groove design of the first arc surface 411 and the second arc surface 413 not only facilitates the installation and disassembly of the push switch in a thinner structure, but also facilitates the installation and disassembly of the arc buckle. Since the two do not conflict, they can be carried out simultaneously to improve efficiency.

[0039] In yet another optional embodiment, one end of the second arcuate surface 413 is connected to the first arcuate surface 411 on the same side, and the other end of the second arcuate surface 413 is connected to the inner wall of the housing 3 .

[0040] In another optional embodiment, the housing 3 includes a first housing (3 in the drawings is the first housing) and a second housing (not shown in the drawings), the bin body 4 is arranged on the inner wall of the first housing, and the side of the bin body 4 facing the second housing is provided with the first groove 41. The first housing and the second housing are buckled together to form the entire housing.

[0041] In yet another optional embodiment, the first end of the button 1 is further provided with a spring 12 for resetting the button 1 .

[0042] In yet another optional embodiment, the button 1 is further provided with a sealing ring 13 (sleeved on the groove 14 ) between the first end and the second end, and the sealing ring 13 is located in the through hole 31 and has an interference fit with the through hole 31 .

[0043] In another optional embodiment, the key switch 2 is electrically connected to the control circuit board through a flexible circuit board 6. In the embodiment of the present invention, the key switch 2 includes a circuit board 21 with a certain hardness and a key switch button part 22 with a certain hardness, so as to be fixed through the first groove 41, that is, the present embodiment is a key part (hard) + FPC (soft).

[0044] Embodiment 2

[0045] The embodiment of the present invention discloses a housing, on which the key structure as described in the first embodiment is provided.

[0046] The contents disclosed in the embodiments of the present invention only disclose the preferred embodiments of the present invention, which are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A key structure arranged on a housing, comprising a key and a key switch receiving a pressing force of the key to output a switch signal, wherein the key switch is electrically connected to a control circuit board; characterized in that: A storage body is provided on the inner wall of the housing, a first groove is provided on the side of the storage body, and the key switch is provided in the first groove; A through hole is provided at the connection between the first groove and the inner wall of the shell, and the through hole passes through the inner wall of the shell to connect the first groove to the outside; the first end of the key is a pressing force input end, and the travel of the second end of the key can reach the pressing position of the key switch through the through hole; The inner wall portions of the first groove close to the two ends of the key switch are first arcuate surfaces, and the first arcuate surfaces are used to limit the key switch.

2. The key structure according to claim 1, characterized in that: The first inner wall surface of the first groove is in contact with the back surface of the key switch, and the two ends of the first inner wall surface are respectively connected to the corresponding first arc-shaped surfaces; The first arc surface surrounds the end of the key switch, and a first cavity is formed between the end of the key switch and the first arc surface. The first cavity is used for installation and removal of the key switch.

3. The key structure according to claim 1, characterized in that: It also includes an arc-shaped buckle; a second groove is provided on the second end of the button, and the arc-shaped buckle is sleeved on the second groove; the size of the arc-shaped buckle is designed to be unable to pass through the through hole.

4. The key structure according to claim 3, characterized in that: The inner wall portion of the first groove near the two ends of the arc buckle is set as a second arc surface, and a second cavity is formed between the end of the arc buckle and the second arc surface, and the second cavity is used for installation and disassembly of the arc buckle.

5. The key structure according to claim 4, characterized in that: One end of the second arc-shaped surface is connected to the first arc-shaped surface on the same side, and the other end of the second arc-shaped surface is connected to the inner wall of the shell.

6. The key structure according to claim 1, characterized in that: The shell includes a first shell and a second shell, the bin body is arranged on the inner wall of the first shell, and the first groove is arranged on the side of the bin body facing the second shell.

7. The key structure according to claim 3, characterized in that: The first end of the button is also provided with a spring for resetting the button.

8. The key structure according to claim 3, characterized in that: The button is also provided with a sealing ring between the first end and the second end. The sealing ring is located in the through hole and is interference fit with the through hole.

9. The key structure according to claim 1, characterized in that: The key switch is electrically connected to the control circuit board through a flexible circuit board.

10. A housing, characterized in that: The housing is provided with a key structure as claimed in any one of claims 1 to 9.

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