Lens structure applied to doorbell

Abstract

The utility model belongs to the technical field of lenses, and discloses a lens structure applied to a doorbell, which comprises a lens and a dismounting assembly, and one side of the lens is fixedly connected with an elastic chuck; the dismounting assembly comprises an annular seat and a knob, the knob is rotatably mounted on the annular seat, an insertion groove is formed in the annular seat in the radial direction of the annular seat, a movable rod is slidably inserted into the insertion groove, a pressing rod is fixedly connected to the lower end of the movable rod, and the lower end of the pressing rod slidably penetrates out of an inner ring of the annular seat; according to the lens dismounting device, the dismounting assembly comprises the annular seat and the knob, the elastic clamping head can be extruded to realize quick dismounting of the lens only by rotating the knob and utilizing the transmission of the gradual change bulge to the movable rod and the pressing rod, additional tools are not needed, the operation efficiency is remarkably improved, and the mounting risks such as screw slipping are avoided.

Description

Technical Field

[0001] This utility model relates to the field of lens technology, and in particular to a lens structure used in doorbells. Background Technology

[0002] Fresnel infrared human body sensor lenses are essential accessories for smart home products such as smart doorbells and smart cameras to display their functions. Their function is to collect infrared light emitted by the human body and then focus the infrared light onto the sensor surface, so that smart home products such as cameras can detect the infrared light emitted when a person moves, thereby activating and capturing images.

[0003] Currently, lenses are typically fixed to doorbells using screws or adhesive during installation. However, this method requires tools (such as screwdrivers or hot air blowers) for disassembly and assembly, resulting in low operational efficiency and the risk of stripped screws.

[0004] Therefore, we propose a lens structure for use in doorbells. Utility Model Content

[0005] The purpose of this invention is to provide a lens structure for use in doorbells, thereby solving or at least alleviating one or more of the aforementioned problems and other issues existing in the prior art.

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] A lens structure for use in a doorbell includes a lens and a disassembly assembly, wherein a resilient clip is fixedly connected to one side of the lens;

[0008] The disassembly assembly includes an annular base and a knob. The knob is rotatably mounted on the annular base. The annular base has a slot along its radial direction. A movable rod is slidably inserted into the slot. A pressure rod is fixedly connected to the lower end of the movable rod. The lower end of the pressure rod slides out from the inner ring of the annular base. A gradient protrusion is fixedly connected to the inner wall of the knob. By rotating the knob, the gradient protrusion presses against the top of the movable rod, thereby causing the lower end of the pressure rod to press against the elastic clip, disengaging the elastic clip from the doorbell housing, thus removing the lens from the doorbell housing.

[0009] In a lens structure for use in a doorbell according to the present invention, three elastic clips are provided, and the three elastic clips are distributed in a circular equidistant array.

[0010] In a lens structure for use in a doorbell according to the present invention, a positioning block is fixedly connected to the side of the lens near the elastic clip.

[0011] In a lens structure for use in a doorbell according to the present invention, an annular protrusion is fixedly connected to one side of the annular seat, and the knob is rotatably sleeved on the annular protrusion.

[0012] In a lens structure for use in a doorbell according to the present invention, the annular seat is fixed inside the doorbell housing by screws.

[0013] In a lens structure for use in a doorbell according to the present invention, the outer wall of the knob is provided with anti-slip texture.

[0014] According to the present invention, a lens structure for use in a doorbell is provided, wherein the lens body is divided into an upper viewing area, a middle viewing area, and a lower viewing area from top to bottom. The upper viewing area, the middle viewing area, and the lower viewing area are each composed of a plurality of Fresnel patterned lens sheets, and all the Fresnel patterned lens sheets are focused on the sensing position of the pyroelectric sensor of the doorbell.

[0015] According to the present invention, a lens structure for use in a doorbell is provided, wherein the upper viewing area and the lower viewing area are each provided with five Fresnel pattern lenses, and the middle viewing area is provided with seven Fresnel pattern lenses.

[0016] In a lens structure for use in a doorbell according to the present invention, the focal center of the Fresnel pattern lens on the left is shifted to the left, the focal center of the Fresnel pattern lens on the right is shifted to the right, and the Fresnel pattern lenses on the left and right sides are arranged axially symmetrically.

[0017] In a lens structure for use in a doorbell according to the present invention, the lens body has a left-right detection angle of 120° and a right-down detection angle of 50°.

[0018] This utility model has at least the following beneficial effects:

[0019] By disassembling the components, including the ring seat and knob, simply rotating the knob allows the progressively raised protrusions to drive the movable rod and the pressure rod, which in turn compresses the elastic chuck to quickly remove the lens. No additional tools are required, significantly improving operational efficiency and avoiding installation risks such as stripped screws.

[0020] Three elastic clips arranged in a circular, equidistant array ensure even force distribution during lens installation. Combined with the precise positioning of the positioning block and the doorbell housing, this greatly enhances the stability of the lens after installation. Meanwhile, the ring seat is fixed inside the doorbell housing with screws, providing stable support for disassembly components and ensuring the reliability of disassembly operations.

[0021] The lens body is divided into an upper viewing area, a middle viewing area, and a lower viewing area. Each viewing area is composed of a different number of Fresnel patterned lenses. Through a focal center offset design, the lens can achieve a horizontal detection angle of 120° and a vertical detection angle of 50°. This allows for more comprehensive and accurate collection of infrared light emitted by the human body from different directions and focuses it onto the pyroelectric sensor. This significantly improves the doorbell's sensitivity and accuracy in detecting human activity, effectively expands the detection range, avoids blind spots, and enhances the security performance of smart home products. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the lens structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the connection structure of the disassembly component of this utility model;

[0026] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0027] Figure 5 for Figure 4 A magnified structural diagram of part A in the diagram;

[0028] Figure 6 This is a schematic diagram of the lens rear view structure of this utility model;

[0029] Figure 7 This is a schematic diagram of the viewing area of ​​the lens of this utility model in the side view and top view areas;

[0030] Figure 8 This is a schematic diagram of the lens texture of this utility model.

[0031] Explanation of icon numbers:

[0032] 1. Lens; 101. Positioning block; 102. Elastic locking head; 103. Upper viewing area; 104. Middle viewing area; 105. Lower viewing area; 2. Disassembly assembly; 201. Annular seat; 2011. Slot; 2012. Movable rod; 2013. Pressure rod; 2014. Spring; 2015. Annular protrusion; 202. Knob; 2021. Gradient protrusion. Detailed Implementation

[0033] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0034] Please refer to Figures 1 to 8 As shown in the embodiments of this utility model,

[0035] A lens structure for use in a doorbell includes a lens 1 and a disassembly assembly 2. A resilient clip 102 is fixedly connected to one side of the lens 1. The disassembly assembly 2 includes an annular seat 201 and a knob 202. The knob 202 is rotatably mounted on the annular seat 201. The annular seat 201 has a slot 2011 along its radial direction. A movable rod 2012 is slidably inserted into the slot 2011. A pressure rod 2013 is fixedly connected to the lower end of the movable rod 2012. The lower end of the pressure rod 2013 slides out from the inner ring of the annular seat 201. A gradient protrusion 2021 is fixedly connected to the inner wall of the knob 202. By rotating the knob 202, the gradient protrusion 2021 presses the top of the movable rod 2012, thereby pressing the lower end of the pressure rod 2013 against the resilient clip 102, disengaging the resilient clip 102 from the doorbell housing, thereby removing the lens 1 from the doorbell housing.

[0036] Working principle: When lens 1 needs to be removed, rotate knob 202. Knob 202 is rotatably mounted on annular seat 201, and the gradually tapering protrusion 2021 on its inner wall contacts the top of movable rod 2012. As knob 202 rotates, the position of the gradually tapering protrusion 2021 changes, generating a pressing force on the top of movable rod 2012. Movable rod 2012 can slide radially within slot 2011. After being pressed, movable rod 2012 moves downward. Because the lower end of movable rod 2012 is fixedly connected to pressure rod 2013, pressure rod 2013 also moves downward. The lower end of pressure rod 2013 passes through the inner ring of annular seat 201 and presses against elastic clip 102. Elastic clip 102, originally connected to doorbell housing, deforms under the pressing action of pressure rod 2013, thereby detaching from doorbell housing, realizing the removal of lens 1 from doorbell housing.

[0037] In this embodiment, three elastic card heads 102 are provided, and the three elastic card heads 102 are distributed in a circular equidistant array.

[0038] The three flexible clips 102 are arranged in a circular, equidistant array, ensuring that the lens 1 is subjected to uniform forces from three directions when installed on the doorbell housing, thus guaranteeing the stability of the lens 1 installation. During disassembly, the pressure rod 2013 applies uniform pressure to the three flexible clips 102, enabling the flexible clips 102 to detach from the doorbell housing simultaneously, ensuring the smoothness of the lens 1 disassembly process and preventing damage to the lens 1 or difficulty in disassembly due to uneven force.

[0039] In this embodiment, a positioning block 101 is fixedly connected to the side of the lens 1 near the elastic card head 102.

[0040] The function of the positioning block 101 is to provide accurate positioning for the lens 1 during installation. When the lens 1 is installed on the doorbell housing, the positioning block 101 can cooperate with the corresponding positioning structure on the doorbell housing to ensure that the elastic clip 102 can be accurately aligned with the slot structure on the doorbell housing, which facilitates installation and prevents the lens 1 from shifting.

[0041] In this embodiment, an annular protrusion 2015 is fixedly connected to one side of the annular seat 201, and the knob 202 is rotated and sleeved on the annular protrusion 2015.

[0042] The annular protrusion 2015 provides support and guidance for the rotation of the knob 202. The knob 202 is rotatably mounted on the annular protrusion 2015, ensuring a stable axis during rotation and guaranteeing smooth and stable operation. Simultaneously, this structural design restricts the radial movement of the knob 202, allowing it to rotate only around the axis of the annular protrusion 2015. This ensures that the gradient protrusion 2021 can accurately apply pressure to the top of the movable rod 2012, enabling the normal disassembly of the lens 1.

[0043] In this embodiment, the ring seat 201 is fixed to the inside of the doorbell housing by screws.

[0044] Using screws to fix the ring seat 201 inside the doorbell housing ensures its stable position within the housing. As a crucial support component of the disassembly assembly 2, the stable installation of the ring seat 201 is fundamental to the proper functioning of the entire disassembly structure. During lens 1 disassembly, the ring seat 201 can withstand the forces generated by the rotation of the knob 202 and the movements of components such as the movable rod 2012 and the pressure rod 2013, without displacement or loosening, thus ensuring the reliability of the disassembly operation.

[0045] In this embodiment, the outer wall of the knob 202 is provided with anti-slip texture.

[0046] The anti-slip texture on the outer wall of knob 202 increases the friction between the user's hand and knob 202. When the user needs to rotate knob 202 to remove lens 1, the greater friction allows the user to apply force more easily and accurately, avoiding the inability to rotate knob 202 smoothly due to slippage, improving the convenience and reliability of operation, and ensuring that the user can successfully complete the removal of lens 1.

[0047] To ensure the airtightness of the connection between lens 1 and doorbell housing, a sealing ring is provided on the contact surface between lens 1 and doorbell housing.

[0048] In this embodiment, the lens 1 is divided into an upper viewing area 103, a middle viewing area 104 and a lower viewing area 105 from top to bottom. The upper viewing area 103, the middle viewing area 104 and the lower viewing area 105 are all composed of several Fresnel patterned lens pieces. All Fresnel patterned lens pieces are focused on the sensing position of the pyroelectric sensor of the doorbell.

[0049] Fresnel lenses refract and focus light through their unique patterns. Light rays from different directions, passing through the Fresnel-patterned lenses in the upper viewing area 103, middle viewing area 104, and lower viewing area 105, change their propagation direction according to their respective refraction laws. Since these lenses are all focused on the sensing position of the pyroelectric sensor in the doorbell, light entering lens 1 from various angles ultimately converges at the pyroelectric sensor. The pyroelectric sensor can detect radiation such as infrared rays emitted by the human body. When a person moves within the doorbell's detection range, the infrared radiation they emit is focused by the Fresnel lenses in each viewing area of ​​lens 1 and received by the pyroelectric sensor, thereby triggering relevant doorbell functions, such as emitting an alert tone.

[0050] Furthermore, in this embodiment, the upper viewing area 103 and the lower viewing area 105 are each provided with five Fresnel pattern lenses, and the middle viewing area 104 is provided with seven Fresnel pattern lenses.

[0051] The varying numbers of Fresnel lenses distributed across different viewing zones are designed to achieve more effective focusing and detection of light from different angles. The middle viewing zone 104 has seven lenses, compared to the five lenses in the upper viewing zone 103 and lower viewing zone 105, enabling it to focus light from a wider range or more complex angles within the middle area. The five lenses in the upper viewing zone 103 and lower viewing zone 105 focus light from specific angles above and below, respectively. This arrangement of different numbers of lenses in different viewing zones allows lens 1 to more comprehensively and accurately focus light from all directions onto the pyroelectric sensor, improving the doorbell's sensitivity and accuracy in detecting people's activities at different locations.

[0052] In this embodiment, the focal center of the lens in each Fresnel pattern layer on the left is shifted to the left, and the focal center of the lens in each Fresnel pattern layer on the right is shifted to the right, and the Fresnel pattern lenses on the left and right sides are arranged axially symmetrically.

[0053] The focal center of the Fresnel lenses on the left is shifted to the left, and the focal center of the lenses on the right is shifted to the right. This design better accommodates the focusing needs of light emitted from objects in different directions. When someone approaches the doorbell from the left or right, the shifted focal center allows the lenses on the corresponding side to more effectively focus the light from that side onto the pyroelectric sensor. For example, if someone approaches from the left, the left-side Fresnel lenses, with their focal centers shifted to the left, can more accurately converge the light from the left side onto the sensor's sensing position; similarly, when someone approaches from the right, the right-side lenses on the right can perform a similar function. This design further expands the doorbell's effective detection angle and range, improving its ability to detect people in different positions.

[0054] In this embodiment, the lens 1 has a left-right detection angle of up to 120° and a vertical detection angle of up to 50°.

[0055] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the present invention's conception through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A lens structure for use in a doorbell, characterized in that, Includes a lens (1) and a disassembly assembly (2), wherein a flexible clip (102) is fixedly connected to one side of the lens (1); The disassembly assembly (2) includes an annular seat (201) and a knob (202). The knob (202) is rotatably mounted on the annular seat (201). The annular seat (201) has a slot (2011) radially thereon. A movable rod (2012) is slidably inserted into the slot (2011). A pressure rod (2013) is fixedly connected to the lower end of the movable rod (2012). The lower end of the pressure rod (2013) extends from the... The inner ring of the ring seat (201) slides out, and the inner wall of the knob (202) is fixedly connected with a gradient protrusion (2021). By rotating the knob (202), the gradient protrusion (2021) presses the top of the movable rod (2012), thereby causing the lower end of the pressure rod (2013) to press the elastic clip (102), disengaging the elastic clip (102) from the doorbell housing, thereby removing the lens (1) from the doorbell housing.

2. The lens structure for use in a doorbell according to claim 1, characterized in that: The elastic card head (102) is provided in three parts, and the three elastic card heads (102) are distributed in a circular equidistant array.

3. The lens structure for use in a doorbell according to claim 2, characterized in that: A positioning block (101) is fixedly connected to the side of the lens (1) near the elastic clip (102).

4. The lens structure for use in a doorbell according to claim 1, characterized in that: An annular protrusion (2015) is fixedly connected to one side of the annular seat (201), and the knob (202) is rotated and sleeved on the annular protrusion (2015).

5. A lens structure for use in a doorbell according to claim 4, characterized in that: The ring seat (201) is fixed inside the doorbell housing by screws.

6. The lens structure for use in a doorbell according to claim 1, characterized in that: The outer wall of the knob (202) is provided with anti-slip texture.

7. The lens structure for use in a doorbell according to claim 1, characterized in that: The lens (1) is divided into an upper viewing area (103), a middle viewing area (104), and a lower viewing area (105) from top to bottom. The upper viewing area (103), the middle viewing area (104), and the lower viewing area (105) are all composed of several Fresnel patterned lenses. All the Fresnel patterned lenses are focused on the sensing position of the pyroelectric sensor of the doorbell.

8. A lens structure for use in a doorbell according to claim 7, characterized in that: The upper viewing area (103) and the lower viewing area (105) are each provided with five Fresnel pattern lenses, and the middle viewing area (104) is provided with seven Fresnel pattern lenses.

9. A lens structure for use in a doorbell according to claim 8, characterized in that: The focal length centers of the Fresnel pattern lenses on the left are shifted to the left, and the focal length centers of the Fresnel pattern lenses on the right are shifted to the right. Furthermore, the Fresnel pattern lenses on the left and right sides are arranged axially symmetrically.

10. A lens structure for use in a doorbell according to claim 9, characterized in that: The lens (1) has a left-right detection angle of 120° and a top-bottom detection angle of 50°.

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