Key structure and intelligent doorbell

By introducing a light-transmitting component and a light source into the doorbell button structure, the problem of the doorbell buttons being difficult to identify in low-light environments has been solved, enabling convenient button operation.

CN223927254UActive Publication Date: 2026-02-17DONGGUAN APICAL TECH CO LTD
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Patent Information

Application Number
CN202520200956.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-08
Publication Date
2026-02-17
Estimated Expiration
2035-02-08

AI Technical Summary

Technical Problem

Existing doorbell buttons are difficult to identify in poor lighting conditions, forcing users to fumble around to find their location, which is inconvenient.

Method used

Design a button structure including a housing, a PCB board, a light-transmitting component and a button. The light-transmitting component consists of a light guide sheet and a sealing gasket. The light from the illumination lamp passes through the light-transmitting component to make the area around the button illuminate, making it easy to identify the button position.

Benefits of technology

In poor lighting conditions, the buttons are illuminated around their perimeter, significantly improving their visibility and allowing users to easily locate and press them, thus enhancing the user experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a button structure and an intelligent doorbell, and the button structure comprises a housing, one side of which is provided with an installation hole; the PCB is arranged in the shell, a pressing switch and an illuminating lamp are arranged on the side, close to the mounting hole, of the PCB, and the pressing switch and the illuminating lamp are electrically connected with the PCB and are arranged opposite to the mounting hole; the light-transmitting component is arranged on one side, close to the mounting hole, of the PCB and is pressed in the mounting hole through the shell so as to seal the mounting hole, the light-transmitting component is elastic, and a gap is formed between the light-transmitting component and the push switch; and the key is arranged on one side, deviating from the PCB, of the light-transmitting sealing assembly and is positioned in the mounting hole. According to the intelligent doorbell, when the intelligent doorbell is powered on to work, the illuminating lamp on the PCB can emit light for illumination, and illuminating light irradiates the light-transmitting assembly, so that the periphery of the key emits light, people can easily and directly find the key and press the key, and the intelligent doorbell can be conveniently used in an environment with poor illumination conditions.
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Description

TECHNICAL FIELD

[0001] The utility model relates to doorbell technical field, especially a key structure and intelligent doorbell. BACKGROUND

[0002] At present, doorbell is widely used in life, and many families will also install doorbell outdoors, but the existing doorbell has poor experience in the environment with poor lighting conditions, and the existing doorbell usually only has a small power lamp on the watch case to show that the doorbell is in the power-on state, for example, the LED lamp bead of a doorbell outdoor machine with the publication number CN208781365U is exposed on the surface shell and has a distance from the key position, the LED lamp bead has a certain brightness, but the brightness is limited and still cannot accurately confirm the key position, and such doorbell cannot see the doorbell key in the dark corridor, and the user needs to confirm the key position by groping, which is very inconvenient to use.

[0003] Therefore, the prior art still needs to be improved and improved. UTILITY MODEL CONTENT

[0004] In view of the above deficiencies of the prior art, the purpose of the utility model is to provide a key structure and intelligent doorbell, which aims to solve the problem that the doorbell in the prior art usually only has a small power lamp on the watch case to show that the doorbell is in the power-on state, and the doorbell cannot see the key in the environment with poor lighting conditions, resulting in the need for the user to confirm the key position by groping, which is very inconvenient to use.

[0005] The technical scheme adopted by the utility model to solve the technical problems is as follows:

[0006] In the first aspect, the utility model embodiment provides a key structure, which comprises:

[0007] A shell, one side of the shell is provided with a mounting hole;

[0008] A PCB board is arranged in the shell, and one side of the PCB board close to the mounting hole is provided with a press switch and an illuminating lamp, the press switch and the illuminating lamp are electrically connected with the PCB board and are arranged opposite to the mounting hole respectively;

[0009] A light transmission assembly is arranged on one side of the PCB board close to the mounting hole and is pressed in the mounting hole through the shell to seal the mounting hole, the light transmission assembly has elasticity and has a gap between the press switch;

[0010] A key is arranged on one side of the light transmission assembly away from the PCB board and located in the mounting hole.

[0011] As a further improved technical solution, the light-transmitting assembly comprises a light guide sheet and a sealing gasket, the sealing gasket is arranged on the PCB board, the center area of the sealing gasket is located in the mounting hole and has a gap with the press switch, and the edge area of the sealing gasket is clamped and pressed and fixed by the PCB board and the inner side of the shell.

[0012] The light guide sheet is arranged on the side of the sealing gasket away from the PCB board and is limited in the mounting hole by the shell, the side of the light guide sheet away from the sealing gasket is provided with an annular protrusion, the key is arranged in the annular protrusion and corresponds to the press switch.

[0013] As a further improved technical solution, the shell comprises a face shell and a top cover, the top cover is arranged on the outer side of the face shell, the face shell is provided with a first through hole, the top cover is provided with a second through hole, the first through hole corresponds to the second through hole and combines to form the mounting hole.

[0014] The inner side of the face shell is provided with a first limiting groove near the first through hole, the first limiting groove is pressed on the edge area of the sealing gasket, the inner side of the top cover is provided with a second limiting groove near the second through hole, the second limiting groove is pressed on the edge of the light guide sheet, and the side edge of the annular protrusion abuts against the inner wall of the second through hole.

[0015] As a further improved technical solution, the above key structure further comprises:

[0016] A sealing ring is arranged on the edge area of the sealing gasket, and the first limiting groove is pressed on the sealing ring.

[0017] As a further improved technical solution, the side edge of the sealing gasket is provided with a positioning hole, and the inner side of the face shell is provided with a positioning column, the positioning hole is sleeved on the positioning column and is in interference fit.

[0018] As a further improved technical solution, the edge of the light guide sheet is provided with a slot, the second limiting groove is provided with a limiting protrusion, and one end of the limiting protrusion is clamped with the slot.

[0019] As a further improved technical solution, the side of the key close to the light guide sheet is provided with a limiting column, the light guide sheet is provided with a limiting hole, and the limiting column is arranged in the limiting hole.

[0020] As a further improved technical solution, the side of the key close to the light guide sheet is provided with a plug rod, the light guide sheet is provided with a plug hole, and the plug rod is arranged in the plug hole and is in interference fit to fix the key on the light guide sheet.

[0021] As a further improved technical scheme, the light guide sheet is provided with a convex point at the center of the side close to the sealing gasket, the sealing gasket is provided with a groove matched with the convex point at the side close to the light guide sheet, the convex point is arranged in the groove, and the groove corresponds to the press switch.

[0022] In a second aspect, the utility model embodiment further provides a kind of intelligent doorbell, it includes the key structure as any one of the above.

[0023] Compared with prior art, the utility model embodiment has the following advantages:

[0024] The utility model embodiment provides a kind of key structure, including: shell, the side of the shell is equipped with mounting hole;PCB board, the PCB board is arranged in the shell, and the side of the PCB board close to the mounting hole is equipped with press switch and illumination lamp, and the press switch and the illumination lamp are electrically connected with the PCB board respectively and are all arranged with the mounting hole;Light transmission component, the light transmission component is arranged at the side of the PCB board close to the mounting hole, and is held in the mounting hole by the shell to seal the mounting hole, and the light transmission component has elasticity and has gap between the press switch;Key, the key is arranged at the side of the light transmission component away from the PCB board and is located in the mounting hole.In the utility model, when intelligent doorbell is powered on, the illumination lamp on the PCB board can emit light, and the illumination light is irradiated on the light transmission component, so that the periphery of the key emits light, which makes it easier for people to directly find the key and press it, and facilitates the use of intelligent doorbell in poor lighting conditions. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is an exploded view of the key structure provided by the utility model;

[0026] Figure 2 It is a cross-sectional structure schematic view of the key structure provided by the utility model;

[0027] Figure 3 It is a three-dimensional structure schematic view of the sealing gasket in the utility model;

[0028] Figure 4 It is a front structure schematic view of the light guide sheet in the utility model;

[0029] Figure 5 It is a back structure schematic view of the light guide sheet in the utility model;

[0030] Figure 6 It is a three-dimensional structure schematic view of the face shell in the utility model;

[0031] Figure 7It is assembly structure diagram of face shell and PCB board in the utility model.

[0032] Figure 8 It is assembly structure diagram of face shell and sealing gasket in the utility model.

[0033] Figure 9 It is three-dimensional structure diagram of top cover in the utility model.

[0034] Figure 10 It is three-dimensional structure diagram of key in the utility model.

[0035] In the drawing: 1, shell; 101, mounting hole; 2, PCB board; 3, press switch; 4, illuminating lamp; 5, light transmission assembly; 501, light guide sheet; 5011, annular protrusion; 5012, insertion slot; 5013, limiting hole; 5014, insertion hole; 5015, convex point; 502, sealing gasket; 5021, center area; 5022, edge area; 5023, positioning hole; 5024, recess; 6, key; 601, limiting column; 602, insertion rod; 7, face shell; 701, first through hole; 702, first limiting slot; 703, positioning column; 8, top cover; 801, second through hole; 802, second limiting slot; 803, limiting protrusion; 9, sealing ring; 10, support framework. DETAILED DESCRIPTION

[0036] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0037] Example one:

[0038] Please refer to Figures 1-10 . Wherein, the key structure includes: shell 1, one side of the shell 1 is equipped with mounting hole 101;PCB board, the PCB board is arranged in the shell 1, and the side of the PCB board close to the mounting hole 101 is equipped with press switch 3 and illuminating lamp 4, the press switch 3 and the illuminating lamp 4 are electrically connected with the PCB board respectively and are all arranged opposite the mounting hole 101;Light transmission assembly 5, the light transmission assembly 5 is arranged in the side of the PCB board close to the mounting hole 101, and is held in the mounting hole 101 by the shell 1 to seal the mounting hole 101, the light transmission assembly 5 has elasticity and has gap between the press switch 3;Key 6, the key 6 is arranged in the side of the light transmission sealing assembly away from the PCB board and is located in the mounting hole 101.

[0039] As Figure 1and Figure 2 As shown in the figure, in the embodiment, the key structure comprises a shell 1, a PCB board, a press switch 3, a lighting lamp 4, a light-transmitting assembly 5 and a key 6; wherein the front side of the shell 1 is provided with the mounting hole 101, the PCB board is arranged in the shell 1 through a support framework 10, the support framework 10 is installed in the middle of the shell 1 through screws and is used for supporting and fixing the PCB board, the press switch 3 and the lighting lamp 4 are both arranged on the front side of the PCB board and are respectively electrically connected with the PCB board and are both arranged opposite to the mounting hole 101, the back side of the light-transmitting assembly 5 is arranged on the front side of the PCB board and is pressed in the mounting hole 101 through the shell 1 to seal the mounting hole 101, that is, the shell 1 presses the front side of the light-transmitting assembly 5, the light-transmitting assembly 5 is elastic and has a gap with the press switch 3, the key 6 is arranged on the front side of the light-transmitting assembly 5 and is located in the mounting hole 101. When a user presses the key 6, the key 6 is stressed and extrudes the light-transmitting assembly 5, the light-transmitting assembly 5 is concave and its back side triggers the press switch 3, when the user withdraws the external force applied to the key 6, the light-transmitting assembly 5 restores the deformation away from the press switch 3 and drives the key 6 to restore to the original position, at the same time, the light-transmitting assembly 5 is made of transparent silica gel, the press switch 3 is an existing light touch switch, and the lighting lamp 4 is an existing LED lamp bead; and the lighting lamp 4 on the PCB board can be provided with a plurality of lighting lamps 4, and the plurality of lighting lamps 4 are evenly spaced and surround the press switch 3 and form a circular distribution; in the utility model, when the intelligent doorbell is powered on and works, the lighting lamp 4 on the PCB board can emit light and illuminate, and the illumination light is irradiated on the light-transmitting assembly 5, so that the periphery of the key 6 emits light, which makes it easier for people to directly find the key 6 and press it, and facilitates the use of the intelligent doorbell in the environment with poor lighting conditions. At the same time, the key 6 and the light-transmitting assembly 5 in the embodiment are both circular, when the light of the lighting lamp 4 is irradiated on the light-transmitting assembly 5, a circular halo will appear around the key 6, which makes it easier for the user to accurately find the position of the key 6. The key 6 can also have light-transmitting property, and the light-transmitting effect of the key 6 is different from that of the light-transmitting assembly 5, for example, the light-transmitting effect of the light-transmitting assembly 5 is clearer, while the light-transmitting effect of the key 6 is relatively blurred, so as to distinguish the key 6 from the circular halo.

[0040] As Figures 3-5As shown, as a further embodiment, the light-transmitting component 5 includes a light guide sheet 501 made of transparent silicone and a sealing gasket 502 made of transparent silicone. The back side of the sealing gasket 502 is disposed on the PCB board and abuts against the PCB board. The front side of the sealing gasket 502 is provided with an annular circle. The area inside the annular circle is the central area 5021 of the sealing gasket 502, and the area outside the annular circle is the edge area 5022 of the sealing gasket 502. The central area 5021 of the sealing gasket 502 is located in the mounting hole 101 and has a gap with the push switch 3. The front and rear sides of the edge area 5022 of the sealing gasket 502 are clamped and pressed and fixed to the PCB board by the inner side of the housing 1. At the same time, the sealing gasket 502 is shaped like a lotus leaf, with its middle part recessed to the front. The edge area 5022 of the sealing gasket 502 is in contact with the PCB board, while the central area 5021 is not in contact with the PCB board, the push switch 3, and the lighting lamp 4. The light guide sheet 501 is disposed on the front side of the sealing gasket 502 and contacts the central area 5021 of the sealing gasket 502. The light guide sheet 501 is confined in the mounting hole 101 by the housing 1. The front side of the light guide sheet 501 is provided with an annular protrusion 5011. The button 6 is disposed in the annular protrusion 5011 and corresponds to the push switch 3. The annular protrusion 5011 plays a positioning role for the button 6. When the user presses the button 6, the button 6 will be recessed to the back side and squeeze the light guide sheet 501 and the sealing gasket 502. The light guide sheet 501 and the sealing gasket 502 will deform respectively, and the push switch 3 will be triggered by the central area 5021 of the deformed sealing gasket 502.

[0041] like Figures 6-9 As shown, as a further embodiment, the housing 1 includes a front shell 7 and a top cover 8. The top cover 8 is disposed on the outer front side of the front shell 7. The front shell 7 has a first through hole 701, and the top cover 8 has a second through hole 801. The first through hole 701 and the second through hole 801 correspond to each other and are combined to form the mounting hole 101. The inner side of the front shell 7 is provided with a first limiting groove 702 near the first through hole 701. The first limiting groove 702 presses against the edge area 5022 of the sealing gasket 502. The inner side of the top cover 8 is provided with a second limiting groove 802 near the second through hole 801. The second limiting groove 802 presses against the edge of the light guide sheet 501, and the side of the annular protrusion 5011 abuts against the inner wall of the second through hole 801. The light guide sheet 501 and the sealing gasket 502 are respectively held and fixed by the top cover 8 and the front cover 7. The front cover 7 and the top cover 8 are connected by the existing snap-fit ​​connection method to facilitate the disassembly and maintenance of the button structure.

[0042] In the present embodiment, the key structure further comprises a sealing ring 9 arranged at the edge area 5022 of the sealing gasket 502, and the first limiting groove 702 is pressed on the sealing ring 9. Specifically, the sealing ring 9 is a foam adhesive, and the two sides of the sealing ring 9 are respectively pasted with the edge area 5022 of the sealing gasket 502 and the first limiting groove 702, so as to enhance the sealing performance between the first limiting groove 702 and the sealing gasket 502.

[0043] As a further solution, the side of the sealing gasket 502 is provided with a positioning hole 5023, and the inner side of the face shell 7 is provided with a positioning column 703, the positioning hole 5023 is sleeved on the positioning column 703 and is in interference fit. Specifically, the sealing gasket 502 has a certain elasticity, so the positioning hole 5023 also has a certain elasticity, after the positioning column 703 is arranged in the positioning hole 5023, the inner side wall of the positioning hole 5023 tightly wraps the outer periphery of the positioning column 703, so as to reinforce the structural stability between the sealing gasket 502 and the face shell 7.

[0044] As a further solution, the edge of the light guide sheet 501 is provided with a slot 5012, the second limiting groove 802 is provided with a limiting protrusion 803, and one end of the limiting protrusion 803 is clamped with the slot 5012. Specifically, the top cover 8 limits and fixes the light guide sheet 501 through the cooperation of the limiting protrusion 803 and the slot 5012, so as to prevent the light guide sheet 501 from rotating at will.

[0045] As shown in Figure 10 In the present embodiment, the key 6 is provided with a limiting column 601 near one side of the light guide sheet 501, the light guide sheet 501 is provided with a limiting hole 5013, and the limiting column 601 is arranged in the limiting hole 5013. Specifically, the light guide sheet 501 preliminarily limits and positions the key 6 through the cooperation of the limiting hole 5013 and the limiting column 601, so as to enhance the structural stability between the key 6 and the light guide sheet 501.

[0046] As a further solution, the key 6 is provided with a plug rod 602 near one side of the light guide sheet 501, the light guide sheet 501 is provided with a plug hole 5014, and the plug rod 602 is arranged in the plug hole 5014 and is in interference fit, so as to fix the key on the light guide sheet 501. Specifically, the light guide sheet 501 has a certain elasticity, so the plug hole 5014 also has a certain elasticity, the caliber of the plug rod 602 in the present embodiment is slightly larger than the caliber of the plug hole 5014, the plug rod 602 is inserted into the plug hole 5014 by pressing the key 6, at this time the plug hole 5014 slightly deforms and tightly wraps the plug rod 602, so as to increase the frictional resistance and enhance the stability of the key 6.

[0047] As a further solution, the light guide sheet 501 is provided with a protrusion 5015 at the center of the side close to the gasket 502, the gasket 502 is provided with a groove 5024 matched with the protrusion 5015 at the side close to the light guide sheet 501, the protrusion 5015 is arranged in the groove 5024, and the groove 5024 corresponds to the press switch 3. When the key 6 is pressed, the center of the light guide sheet 501 is recessed, at this time, the force on the light guide sheet 501 is concentrated on the protrusion 5015, and the press switch 3 is triggered through the protrusion 5015 and the groove 5024, which is more labor-saving.

[0048] Embodiment two:

[0049] The utility model embodiment further provides a kind of intelligent doorbell, it includes the key structure as any one of above-mentioned embodiment one.

[0050] In conclusion, the utility model embodiment provides a kind of key structure, comprising: shell 1, one side of the shell 1 is equipped with mounting hole 101;PCB board, the PCB board is arranged in the shell 1, and the side of the PCB board close to the mounting hole 101 is equipped with press switch 3 and illuminating lamp 4, the press switch 3 and the illuminating lamp 4 are electrically connected with the PCB board respectively and are all arranged opposite the mounting hole 101;Light transmission component 5, the light transmission component 5 is arranged at the side of the PCB board close to the mounting hole 101, and is held in the mounting hole 101 by the shell 1 to seal the mounting hole 101, the light transmission component 5 has elasticity and has gap between the press switch 3;Key 6, the key 6 is arranged at the side of the light transmission component 5 away from the PCB board and is located in the mounting hole 101.In the utility model, when intelligent doorbell is powered on, the illuminating lamp 4 on the PCB board can emit light, and the illumination light is irradiated on the light transmission component 5, so that the periphery of key 6 emits light, which makes it easier for people to directly find and press the key 6, and the intelligent doorbell is convenient to use in poor lighting conditions.

[0051] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as a limitation on the utility model.

[0052] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply any relative importance or any priority. Thus, a feature defined with "first", "second", etc. can include at least one of the features, explicitly or implicitly.

[0053] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0055] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0056] Of course, the above embodiments of the present application are described in detail, but this cannot be understood as a limitation on the protection scope of the present application. The present application can have other various implementation manners. Based on the present embodiment, other implementation manners obtained by those skilled in the art without any creative labor fall within the scope of protection of the present application. The protection scope of the present application is subject to the appended claims.

Claims

1. A key structure characterized by comprising: It includes: The shell, one side of the shell is provided with a mounting hole; PCB board, the PCB board is arranged in the shell, and the side of the PCB board close to the mounting hole is provided with a press switch and a lighting lamp, the press switch and the lighting lamp are respectively electrically connected with the PCB board and are arranged opposite to the mounting hole; Light transmission assembly, the light transmission assembly is arranged on the side of the PCB board close to the mounting hole and is pressed in the mounting hole by the shell to seal the mounting hole, the light transmission assembly is elastic and has a gap between the press switch; Key, the key is arranged on the side of the light transmission assembly away from the PCB board and is located in the mounting hole.

2. The key structure according to claim 1, wherein The light transmission assembly includes a light guide sheet and a sealing gasket, the sealing gasket is arranged on the PCB board, the center area of the sealing gasket is located in the mounting hole and has a gap between the press switch, the edge area of the sealing gasket is clamped and pressed tightly by the inner side of the shell and the PCB board; The light guide sheet is arranged on the side of the sealing gasket away from the PCB board and is limited in the mounting hole by the shell, the side of the light guide sheet away from the sealing gasket is provided with an annular protrusion, the key is arranged in the annular protrusion and corresponds to the press switch.

3. The key structure according to claim 2, wherein The shell includes a face shell and a top cover, the top cover is arranged on the outer side of the face shell, the face shell is provided with a first through hole, the top cover is provided with a second through hole, the first through hole corresponds to the second through hole and combines to form the mounting hole; The inner side of the face shell is provided with a first limiting groove close to the first through hole, the first limiting groove is pressed on the edge area of the sealing gasket, the inner side of the top cover is provided with a second limiting groove close to the second through hole, the second limiting groove is pressed on the edge of the light guide sheet, and the side edge of the annular protrusion abuts against the inner wall of the second through hole.

4. The key structure according to claim 3, wherein It also includes: The sealing ring is arranged on the edge area of the sealing gasket, and the first limiting groove is pressed on the sealing ring.

5. The key structure according to claim 3, wherein The side edge of the sealing gasket is provided with a positioning hole, and the inner side of the face shell is provided with a positioning column, the positioning hole is sleeved on the positioning column and is in interference fit.

6. The key structure according to claim 3, wherein The edge of the light guide sheet is provided with a slot, the second limiting groove is provided with a limiting protrusion, and one end of the limiting protrusion is clamped with the slot.

7. The key structure according to claim 2, wherein The side of the key close to the light guide sheet is provided with a limiting column, and the light guide sheet is provided with a limiting hole, the limiting column is arranged in the limiting hole.

8. The key structure according to claim 2, wherein The side of the key close to the light guide sheet is provided with a plug rod, and the light guide sheet is provided with a plug hole, the plug rod is arranged in the plug hole and is in interference fit to fix the key on the light guide sheet.

9. The key structure according to claim 2, wherein The light guide sheet is provided with a protruding point at the center of the side close to the sealing gasket, the sealing gasket is provided with a groove corresponding to the protruding point at the side close to the light guide sheet, the protruding point is arranged in the groove, and the groove corresponds to the press switch.

10. A smart doorbell, characterized in that, It includes the key structure as claimed in any one of claims 1-9.

Citation Information

Patent Citations

  • Doorbell off -premises station

    CN208781365U