Key mounting structure and hair trimmer

Abstract

The utility model discloses a key mounting structure and a hair trimmer, the key mounting structure comprises a shell, a key, a mounting plate and a fastener, the shell comprises a side wall, the side wall defines a mounting cavity with a mounting opening, and the side wall is provided with a mounting hole communicated with the mounting cavity; the mounting plate is fixed to the inner wall face of the side wall through a fastener, the fastener is obliquely arranged relative to the mounting plate, and the head of the fastener faces the mounting opening; the key is arranged in the mounting hole, one end of the key is exposed out of the outer wall face of the side wall, and the key can move in the axial direction of the mounting hole relative to the shell. According to the key mounting structure, the mounting plate is fixed on the inner wall surface of the side wall through the fastener, the head of the fastener faces the mounting opening, and the fastener is obliquely arranged relative to the mounting plate, so that the connecting thickness of the fastener and the shell in the transverse direction is small, the thickness of the side wall can be relatively small, and miniaturization of the hair trimmer is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of key installation, and particularly relates to a key installation structure and a hair clipper. BACKGROUND

[0002] The electric device refers to various devices driven by electric energy. In order to facilitate operation and improve user experience, the devices usually adopt a key switch to control the start and stop of the motor. Taking a hair clipper as an example, the hair clipper usually adopts a key switch to control the operation or stop of the motor of the hair clipper. In the prior art, the key is fixed on the shell through a mounting plate, and a threaded fastener is usually transversely arranged between the mounting plate and the shell to fix the key on the shell. However, the threaded fastener transversely arranged between the mounting plate and the shell requires a larger wall thickness to ensure the connection strength of the mounting plate and the shell, which leads to a larger size of the hair clipper, and is not conducive to the miniaturization of the hair clipper. Moreover, the transverse arrangement of the threaded fastener requires the length of the dismounting tool to be less than the length of the shell, which has a higher requirement for the dismounting tool and is not conducive to quick dismounting.

[0003] The above description is only used to assist in understanding the technical scheme of the utility model, and does not mean that the above description is prior art. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the utility model provides a key installation structure, which aims to solve the technical problem that the transverse arrangement of the threaded fastener between the mounting plate and the shell is not conducive to the miniaturization of the hair clipper.

[0005] To achieve the above purpose, the key installation structure provided by the utility model comprises a shell, a key, a mounting plate and a threaded fastener, wherein,

[0006] The shell comprises a side wall, the side wall is enclosed to form a mounting cavity with a mounting opening, and a mounting hole is formed in the side wall and communicates with the mounting cavity;

[0007] The mounting plate is fixed to the inner wall surface of the side wall through the threaded fastener, the threaded fastener is arranged obliquely relative to the mounting plate, and the head of the threaded fastener faces the mounting opening;

[0008] The key is arranged in the mounting hole, one end of the key is exposed to the outer wall surface of the side wall, and the key can move along the axial direction of the mounting hole relative to the shell.

[0009] In an embodiment, the mounting plate comprises an abutting portion and a connecting portion connected to the outer periphery of the abutting portion, the abutting portion corresponds to the mounting hole, and the threaded fastener is arranged in the connecting portion;

[0010] The key installation structure further comprises an elastic member, and two ends of the elastic member are respectively abutted to the abutting portion and the key.

[0011] In an embodiment, the connecting portion has a mounting inclined wall for the fastener to pass through, an inner wall surface of the mounting inclined wall faces the mounting opening and is inclined relative to the mounting opening, and a head of the fastener is fitted to the inner wall surface of the mounting inclined wall.

[0012] In an embodiment, an inner wall surface of the side wall is convexly provided with a mounting platform, the mounting platform has a mounting inclined surface, the mounting inclined surface faces the mounting opening and is matched with an outer wall surface of the mounting inclined wall, and the fastener passes through the mounting inclined surface.

[0013] The mounting plate further comprises a supporting wall connected to the mounting inclined wall, an outer wall surface of the mounting inclined wall is recessed relative to an outer wall surface of the supporting arm to form a limiting groove, and the mounting platform is matched and embedded in the limiting groove.

[0014] In an embodiment, the connecting portion is respectively formed with at least one mounting inclined wall on opposite sides in the first direction.

[0015] The key mounting structure comprises a plurality of fasteners, the mounting inclined wall and the fastener are one-to-one corresponding, and the first direction and the axial direction of the mounting hole are perpendicular to each other.

[0016] In an embodiment, the limiting groove extends to an edge of the mounting plate along the first direction, and the mounting platform protrudes from the edge of the mounting plate in the first direction.

[0017] In an embodiment, the abutting portion is provided with a through hole, the key mounting structure further comprises a control plate arranged in the mounting cavity, and the control plate is provided with a key switch portion corresponding to the through hole.

[0018] The key comprises a key cap and a rod body connected to an inner side of the key cap, and the rod body is used to press the key switch portion through the through hole.

[0019] In an embodiment, the key mounting structure further comprises a sealing member, the sealing member comprises a first sealing portion and a second sealing portion connected to a circumferential direction of the first sealing portion, and the first sealing portion covers the through hole.

[0020] The second sealing portion is clamped between the side wall and the abutting portion to seal a gap between the mounting plate and the side wall.

[0021] In an embodiment, the abutting portion is provided with a plurality of mounting grooves arranged around the through hole, the first sealing portion is provided with a clearance hole corresponding to the mounting groove.

[0022] The elastic member is provided with a plurality of elastic members, the plurality of elastic members are arranged in the mounting groove and abut to an inner side surface of the key cap.

[0023] The utility model discloses still propose a hair trimmer, including cutter head subassembly and as above described button installation structure, the cutter head subassembly is connected in the casing of button installation structure.

[0024] The button installation structure of the utility model fixes the mounting plate on the inner wall surface of the side wall through the fastener, which means that the fastener is sequentially provided in the mounting plate and the side wall, improving the stability of the mounting plate and preventing the mounting plate from shaking when the button is pressed. Secondly, the fastener is inclined relative to the mounting plate, and the head of the fastener faces the installation opening, so that the mounting plate is more easily disassembled, and the length of the disassembly tool does not need to be limited. For example, if the fastener is transversely provided in the mounting plate and the side wall, the length of the disassembly tool needs to be less than the length of the casing, which requires a higher disassembly tool and is not conducive to quick disassembly. At the same time, the fastener is inclined relative to the mounting plate, which can ensure that the mounting plate and the side wall are tightly fixed, the connection thickness of the fastener and the casing in the transverse direction is small, the thickness of the side wall can be relatively small, which is conducive to the miniaturization of the hair trimmer and the reduction of weight. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 The structure diagram of an embodiment of the button installation structure of the utility model is shown;

[0027] Figure 2 The Figure 1 exploded view of the button installation structure;

[0028] Figure 3 The Figure 1 top view of the button installation structure;

[0029] Figure 4 The Figure 3 sectional view of N-N in the button installation structure;

[0030] Figure 5 The Figure 4 local enlarged view of A in the button installation structure;

[0031] Figure 6 The Figure 3 sectional view of P-P in the button installation structure;

[0032] Figure 7 The Figure 6 local enlarged view of B in the button installation structure;

[0033] Figure 8 Fig. 1 is a schematic view of a partial structure of a key mounting structure;

[0034] Figure 9 Fig. 2 is a schematic view of a structure of a mounting plate;

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036]

[0037] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0039] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the posture changes, the directional indications will also change accordingly.

[0040] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B schemes.

[0041] The utility model provides a kind of key mounting structure 100, for the host computer of hair trimmer, electric toothbrush, beauty instrument (such as depilating instrument, cleansing instrument etc.), electric hair clipper, eyebrow trimmer, wearable device (such as watch, massage instrument etc.), dictation pen etc.Electric equipment. The following is taken hair trimmer as example to explain.

[0042] In the embodiments of the utility model, please refer to Figures 1 to 9 The key mounting structure 100 includes a housing 10, a key 20, a mounting plate 30 and a fastener 40, wherein the housing 10 includes a side wall 12, the side wall 12 is enclosed to form a mounting cavity 13 with an installation opening 14 at one end, and the side wall 12 is provided with a mounting hole 124 in communication with the mounting cavity 13; the mounting plate 30 is fixed to the inner wall surface of the side wall 12 by the fastener 40; the fastener 40 is inclinedly arranged relative to the mounting plate 30, and the head of the fastener 40 faces the installation opening 14; the key 20 is arranged in the mounting hole 124, one end of the key 20 is exposed to the outer wall surface of the side wall 12, and the key 20 can move along the axial direction of the mounting hole 124 relative to the housing 10. Specifically, the key 20 is sequentially arranged in the side wall 12 and the mounting plate 30, so as to abut against the key switch part 61 on the control board 60 in the housing 10, thereby controlling the on-off of the circuit, and one end of the key 20 outside is exposed to the outer wall surface of the side wall 12. It can be understood that the inner wall surface refers to the wall surface facing the mounting cavity 13, and the outer wall surface refers to the wall surface away from the mounting cavity 13.

[0043] In the embodiments, the housing 10 is usually made of plastic or metal material, mainly playing a role of protecting the internal electrical components. Specifically, the housing 10 includes a bottom wall 11 and a side wall 12, the bottom wall 11 is a bottom support structure of the hair trimmer 300, and the side wall 12 is a vertical part connected to the bottom wall 11, the bottom wall 11 and the side wall 12 are enclosed to form a square structure similar to a top opening, the inside of which is hollow to form a mounting cavity 13 for accommodating internal elements such as a motor, a battery and a control board 60, and the top is provided with an installation opening 14, which facilitates the disassembly and assembly of the internal elements and improves the convenience of disassembly and assembly. In other embodiments, the installation opening 14 can also be formed in the bottom wall 11.

[0044] The key 20 is used for controlling the on-off operation of the hair trimmer 300, usually including a key cap 21 and a rod body 22, the peripheral side wall of the key cap 21 is formed with a flange, the flange can abut against the inner wall of the housing to prevent the key from being separated from the mounting hole 124. The rod body 22 is arranged in the mounting plate 30 and is used for abutting against the key switch part 61 on the control board 60 in the housing 10, thereby controlling the on-off of the circuit. The user controls the on-off of the internal circuit by pressing along the axial direction of the mounting hole 124 to start or stop the motor of the trimmer.

[0045] The mounting plate 30 is a plate-shaped structure for supporting and fixing the key 20, which provides a position for the key 20 to be elastically supported. The mounting plate 30 reduces the dependence on the material of the housing 10. For example, if the housing 10 is recessed to form a support structure for the key 20, the thickness of the housing 10 needs to be larger, which leads to an increase in the weight of the housing 10, which is not conducive to the miniaturization and light weight of the hair trimmer 300. The fastener 40 can be a screw, a bolt, etc., which is used to fix the mounting plate 30 on the housing 10. The fastener 40 can be one or more, and the stability of multiple fasteners 40 is better.

[0046] The key mounting structure 100 fixes the mounting plate 30 to the inner wall surface of the side wall 12 through the fastener 40, which means that the fastener 40 is sequentially provided in the mounting plate 30 and the side wall 12, which improves the stability of the mounting plate 30 and prevents the mounting plate 30 from shaking when the key is pressed. Secondly, the fastener 40 is inclined relative to the mounting plate 30, and the head of the fastener 40 faces the mounting opening, so that the mounting plate 30 is more easily disassembled, and the length of the disassembly tool does not need to be limited. For example, if the fastener 40 is transversely provided in the mounting plate 30 and the side wall 12, the length of the disassembly tool needs to be less than the length of the housing 10, which has a higher requirement for the disassembly tool and is not conducive to quick disassembly. At the same time, the fastener 40 is inclined relative to the mounting plate 30, which can ensure that the mounting plate 30 and the side wall 12 are tightly fixed, the connection thickness of the fastener 40 and the housing 10 in the transverse direction is small, and the thickness of the side wall 12 can be relatively small, which is conducive to the miniaturization and light weight of the hair trimmer.

[0047] In an embodiment, referring to Figure 2 , Figure 7 and Figure 9 , the mounting plate 30 includes an abutting portion 31 and a connecting portion 32 connected to the outer periphery of the abutting portion 31, the abutting portion 31 corresponds to the mounting hole 124, and the fastener 40 is provided in the connecting portion 32; the key mounting structure 100 further includes an elastic member 80, and the two ends of the elastic member 80 abut against the abutting portion 31 and the key 20, respectively.

[0048] In this embodiment, the elastic member 80 includes but is not limited to a spring. The abutting portion 31 is located at the middle position of the mounting plate 30 and is provided corresponding to the mounting hole 124, so as to abut against one end of the elastic member 80 and provide support for the operation of the key 20. The abutting portion 31 and the key 20 are connected through the elastic member 80, and the elastic member 80 provides a resilient force to enable the key 20 to quickly return to the original position after being pressed down.

[0049] Secondly, the connecting portion 32 is located at the outer periphery of the abutting portion 31, and the fastener 40 is arranged through the connecting portion 32 and the side wall 12, which means that the fastener 40 is arranged to avoid the abutting portion 31. Since the side wall 12 is usually provided with the mounting hole 124, the key 20 is exposed on the outer wall surface of the side wall 12, and the key 20 corresponds to the abutting portion 31, so the mounting hole 124 corresponds to the abutting portion 31. Therefore, the fastener 40 needs to be arranged to avoid the abutting portion 31 to firmly connect the mounting plate 30 and the shell 10, so as to avoid the mounting plate 30 from shaking when the key 20 is pressed.

[0050] In an embodiment, referring to Figure 5 , Figure 8 and Figure 9 , the connecting portion 32 is provided with a mounting inclined wall 321 for the fastener 40 to pass through, and the mounting inclined wall 321 is provided with a via hole for the fastener 40 to pass through. The inner wall surface of the mounting inclined wall 321 faces the mounting opening 14 and is inclined relative to the mounting opening 14, and the head of the fastener 40 is attached to the inner wall surface of the mounting inclined wall 321. The outer wall surface of the mounting inclined wall 321 is adapted to the inner wall surface of the side wall 12.

[0051] It can be understood that the mounting inclined wall 321 is an inclined plate structure. The inner wall surface and the outer wall surface of the mounting inclined wall 321 are two opposite wall surfaces. The inner wall surface of the mounting inclined wall 321 is close to the mounting cavity 13, and the outer wall surface of the mounting inclined wall 321 is away from the mounting cavity 13. The outer wall surface of the mounting inclined wall 321 is adapted to the inner wall surface of the side wall 12.

[0052] In the embodiment, the inner wall surface of the mounting inclined wall 321 faces the mounting opening 14 and is inclined relative to the mounting opening 14, which provides an inclined mounting surface, so that the head of the fastener 40 can be attached to the inner wall surface thereof, thereby improving the connection stability. Secondly, the outer wall surface of the mounting inclined wall 321 is closely adapted to the inner wall surface of the side wall 12, so that the mounting plate 30 is more closely combined with the shell 10, thereby enhancing the stability of the overall structure. At the same time, preventing the mounting plate 30 and the shell 10 from generating a gap makes the fastener 40 pass through the shell 10 to a lesser extent, resulting in that the mounting plate 30 and the shell 10 are not installed stably enough.

[0053] In an embodiment, the inner wall surface of the side wall 12 is provided with a mounting table 121, and the mounting table 121 is provided with a mounting inclined surface 122. The mounting inclined surface 122 faces the mounting opening 14 and is adapted to the outer wall surface of the mounting inclined wall 321, and the fastener 40 passes through the mounting inclined surface 122. The mounting plate 30 further comprises a supporting wall 322 connected to the mounting inclined wall 321. The outer wall surface of the mounting inclined wall 321 is recessed relative to the outer wall surface of the supporting arm 322 to form a limiting groove 323, and the mounting table 121 is adapted to be embedded in the limiting groove 323.

[0054] In the present embodiment, the mounting platform 121 is a protruding structure of the inner wall surface of the side wall 12, so that the connecting area of the side wall 12 and the fastener 40 is increased, thereby improving the stability of the connection between the mounting plate 30 and the side wall 12. The mounting platform 121 has a mounting inclined surface 122, which is directed towards the mounting opening 14 and is adapted to the outer wall surface of the mounting inclined wall 321, so that the mounting inclined wall 321 and the mounting platform 121 are closely fitted and form a stable connection, further enhancing the stability of the mounting. At the same time, the mounting inclined surface 122 and the inner wall surface of the mounting inclined wall 321 are also directed towards the mounting opening 14 and are inclined relative to the mounting opening 14, so that the fastener 40 is more smoothly threaded, improving the assembly efficiency. In assembly, the fastener 40 is a screw, bolt or the like, and the mounting inclined surface 122 is provided with a threaded hole, and the fastener 40 is threaded through the through hole on the mounting plate 30 and is threadedly connected with the threaded hole.

[0055] The support arm 322 is connected below the mounting inclined wall 321, and the support arm 322 provides a support structure for the mounting inclined wall 321 and helps to bear the force generated when the key 20 is pressed. The outer wall surface of the mounting inclined wall 321 is recessed relative to the outer wall surface of the support arm 322 to form a limiting groove 323 for accommodating the mounting platform 121, so as to realize the accurate positioning of the mounting platform 121 and the mounting inclined wall 321.

[0056] In the assembly process, the limiting groove 323 is first positioned on the mounting platform 121. Due to the fitting relationship between the limiting groove 323 and the mounting platform 121, the accurate butt joint between the two can be ensured, and deviation in the mounting process can be avoided. Then, the fastener 40 is threaded through the mounting inclined surface 122 to fix the mounting plate 30 on the housing 10.

[0057] In an embodiment, the wall surface of the mounting platform 121 away from the mounting inclined surface 122 is formed with a guide inclined surface 123, which is arranged away from the mounting opening 14, and the groove wall of the limiting groove 323 is adapted to the mounting inclined surface 122 and the guide inclined surface 123.

[0058] In the present embodiment, the guide inclined surface 123 is located below the mounting inclined surface 122, and the mounting inclined surface 122 can guide the limiting groove 323 to be aligned with the mounting platform 121, so that the mounting platform 121 is accurately embedded in the limiting groove 323, improving the assembly efficiency. Secondly, the guide inclined surface 123 helps to disperse the force exerted by the fastener 40, preventing the mounting platform 121 from being broken off from the side wall 12. For example, when the fastener 40 is assembled, the force exerted by the fastener 40 is not vertically applied to the guide inclined surface 123, but is dispersed along the inclined surface, and the force is transmitted along the inclined surface, so that the local stress concentration is reduced. If the wall surface of the mounting platform 121 away from the mounting inclined surface 122 is a flat surface, a part of the force will be vertically applied to the flat surface when the fastener 40 is installed, resulting in a larger stress concentration.

[0059] In an embodiment, the connecting portion 32 is formed with at least one installation inclined wall 321 on each side in the first direction; the key installation structure 100 comprises a plurality of fasteners 40, and the installation inclined wall 321 corresponds to the fastener 40 one by one; the first direction is perpendicular to the axial direction of the installation hole 124 and the opening direction of the installation opening 14.

[0060] In the embodiment, the abutting portion 31 is located in the middle of the installation plate 30, the connecting portion 32 is formed with one installation inclined wall 321 on each side in the first direction, and each installation inclined wall 321 is provided with a fastener 40, so that the two side ends of the installation plate 30 are stably installed, the shaking is reduced, and the stability of the equipment is improved. Compared with single-point fixing, the multi-point fixing method has stronger stability. In some embodiments, the connecting portion 32 can be formed with two, three or more installation inclined walls 321 on each side in the first direction, so as to further improve the installation stability of the installation plate 30.

[0061] In an embodiment, the limiting groove 323 extends to the edge of the installation plate 30 in the first direction, and the installation table 121 protrudes from the edge of the installation plate 30 in the first direction. Specifically, the installation table 121 extends in the circumferential direction of the side wall 12 to protrude from the edge of the installation plate 30 in the first direction.

[0062] It can be understood that the side wall 12 is an annular structure, and the circumferentially extending installation table 121 has a larger contact area with the side wall 12, thereby providing stronger support force, which can effectively reduce the phenomenon of local stress concentration during assembly and reduce the risk of material fatigue or damage caused by concentrated stress. Secondly, the limiting groove 323 extends to the edge of the installation plate 30 in the first direction, which means that the contact area of the limiting groove 323 with the installation table 121 is also larger, thereby improving the installation stability.

[0063] In an embodiment, the abutting portion 31 is provided with a through hole 311, the key installation structure 100 further comprises a control plate 60 arranged in the installation cavity 13, and the control plate 60 is provided with a key switch portion 61 corresponding to the through hole 311; the key 20 comprises a key cap 21 and a rod body 22 connected to the inner side of the key cap, and the rod body 22 is used to pass through the through hole 311 and the installation hole 124 to press the key switch portion 61.

[0064] In the embodiment, the key 20 is composed of a key cap 21 and a stem 22, which is similar to a "T" shape. The key cap 21 is exposed to the outer wall surface of the side wall 12 through the mounting hole 124 for user operation. The stem 22 is arranged through the side wall 12 and the mounting plate 30 for pressing the key switch part 61 through the through hole 311 to control the connection and disconnection of the circuit. In addition, the stem 22 is arranged through the through hole 311 and the mounting hole 124 to realize accurate positioning and pressing of the key switch part 61 on the control plate 60, avoid contact failure caused by deviation, and improve the sensitivity and reliability of the key 20 response.

[0065] In an embodiment, the key mounting structure 100 further includes a bracket 50 arranged in the mounting cavity 13 and used for mounting a motor, a battery, etc. The control plate 60 is connected to the bracket 50 and faces the key 20. The two mounting inclined walls 321 are respectively located on the opposite sides of the control plate 60 in the first direction.

[0066] It can be understood that the inside of the bracket 50 is used for mounting a motor, and the side surface of the bracket 50 is connected with the control plate 60. The two mounting inclined walls 321 are respectively located on the two sides of the control plate 60 in the first direction, which means that the fasteners 40 are respectively located on the two sides of the control plate 60 in the first direction. In the assembly process, the plurality of fasteners 40 are arranged through the mounting plate 30 and the side wall 12 to stably connect the two, and then the bracket 50 assembled with the control plate 60 is mounted in the mounting cavity 13. Since the plurality of fasteners 40 are located on the two sides of the control plate 60 in the first direction, the installation of the control plate 60 is not affected, so that the structure layout is more compact.

[0067] In an embodiment, the key mounting structure 100 further includes a sealing member 70, which includes a first sealing part 71 and a second sealing part 72 connected to the periphery of the first sealing part 71. The first sealing part 71 covers the through hole 311, and the stem 22 abuts against the first sealing part 71. The elastic member 80 is arranged through the first sealing part 71 to abut against the key cap 21. The second sealing part 72 is clamped between the side wall 12 and the abutting part 31 to seal the gap between the mounting plate 30 and the side wall 12.

[0068] In the embodiment, the material of the sealing member 70 can be an elastic material such as silicone or rubber. The first sealing part 71 covers the through hole 311, which can effectively prevent impurities such as dust and moisture from entering the inside through the through hole 311, thereby protecting the internal electronic elements. In addition, the second sealing part 72 is clamped between the side wall 12 and the abutting part 31 to prevent impurities such as dust and moisture from entering the inside through the gap, and to prevent the mounting plate 30 from shaking due to the gap.

[0069] In an embodiment, the abutting portion 31 is provided with a plurality of mounting grooves 312 arranged around the through hole 311, and the first sealing portion 71 is provided with a plurality of position-avoiding holes 711 corresponding to the mounting grooves 312; the elastic members 80 are provided in plurality, and the plurality of elastic members 80 are arranged in the mounting grooves 312 and abut against the inner side surface of the keycap 21.

[0070] In the embodiment, the plurality of elastic members 80 are arranged at intervals around the through hole 311, that is, the plurality of elastic members 80 are arranged at intervals around the rod body 22 and abut against the keycap 21, which helps to form a uniform and symmetrical elastic force support, so that the keycap maintains a stable, linear and smooth movement path during pressing and rebounding, and the pressing feeling is improved. Secondly, the elastic members 80 are embedded in the mounting grooves 312 to form effective limiting, so as to avoid position deviation or falling of the elastic members due to factors such as vibration and friction in long-term use, thereby maintaining long-term stability of the keycap performance. At the same time, the position-avoiding holes 711 on the first sealing portion 71 accurately correspond to the mounting grooves 312, so as to ensure that the keycap sealing protection is realized while not interfering with the normal work of the elastic member 70, and double protection of sealing and mechanical performance is achieved.

[0071] The utility model also proposes a hair trimmer 300, the hair trimmer 300 includes cutter head assembly 200 and key installation structure 100, the specific structure of key installation structure 100 refers to the above embodiment, because the hair trimmer 300 of the present application adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Among them, the cutter head assembly 200 is connected to the shell 10 of the key installation structure 100.

[0072] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not drive the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A key mounting structure characterized by comprising: The key mounting structure comprises a housing, a key, a mounting plate and a fastener, wherein, the housing comprises a side wall enclosing a mounting cavity with a mounting opening, and the side wall is provided with a mounting hole communicating with the mounting cavity; the mounting plate is fixed to an inner wall surface of the side wall by the fastener, the fastener is arranged obliquely relative to the mounting plate, and a head of the fastener faces the mounting opening; the key is arranged in the mounting hole, one end of the key is exposed to an outer wall surface of the side wall, and the key is movable along an axial direction of the mounting hole relative to the housing.

2. The key mounting structure according to claim 1, wherein the mounting plate comprises an abutting portion corresponding to the mounting hole and a connecting portion connected to an outer periphery of the abutting portion, and the fastener is arranged in the connecting portion; the key mounting structure further comprises an elastic member, and two ends of the elastic member are respectively abutted against the abutting portion and the key.

3. The key mounting structure according to claim 2, wherein the connecting portion is provided with an installation inclined wall for the fastener, an inner wall surface of the installation inclined wall faces the mounting opening and is obliquely arranged relative to the mounting opening, and the head of the fastener is fitted to the inner wall surface of the installation inclined wall.

4. The key mounting structure according to claim 3, wherein an installation platform is protruded from an inner wall surface of the side wall, the installation platform is provided with an installation inclined surface facing the mounting opening and matched with an outer wall surface of the installation inclined wall, and the fastener is arranged in the installation inclined surface; the mounting plate further comprises a supporting wall connected to the installation inclined wall, and an outer wall surface of the installation inclined wall is recessed relative to an outer wall surface of the supporting arm to form a limiting groove, and the installation platform is matched and embedded in the limiting groove.

5. The key mounting structure according to claim 4, wherein at least one installation inclined wall is formed on opposite sides of the connecting portion in a first direction; the key mounting structure comprises a plurality of fasteners, the installation inclined wall and the fastener correspond to each other, and the first direction, the axial direction of the mounting hole and the opening direction of the mounting opening are perpendicular to each other.

6. The key mounting structure according to claim 5, wherein the limiting groove extends to an edge of the mounting plate in the first direction, and the installation platform protrudes from the edge of the mounting plate in the first direction.

7. The key mounting structure according to any one of claims 2 to 6, wherein a through hole is arranged on the abutting portion, the key mounting structure further comprises a control plate arranged in the mounting cavity, and the control plate is provided with a key switch portion corresponding to the through hole; the key comprises a key cap and a rod body connected to an inner side of the key cap, and the rod body is used for pressing the key switch portion through the through hole.

8. The key mounting structure according to claim 7, wherein the key mounting structure further comprises a sealing member, the sealing member comprises a first sealing portion and a second sealing portion connected to a circumferential direction of the first sealing portion, and the first sealing portion covers the through hole; the second sealing portion is clamped between the side wall and the abutting portion to seal a gap between the mounting plate and the side wall.

9. The key mounting structure according to claim 8, wherein a plurality of installation grooves are arranged around the through hole on the abutting portion, and the first sealing portion is provided with avoidance holes corresponding to the installation grooves; a plurality of elastic members are arranged, and the plurality of elastic members are arranged in the installation grooves and abut against an inner side surface of the key cap.

10. A hair trimmer characterized by the key mounting structure is connected to a housing of a tool bit assembly.

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