Human body induction sensor

Abstract

The application discloses a human body sensing sensor, which comprises a shell and a detection element, the shell comprises a first shell assembly and a second shell assembly, and the detection element is fixedly connected with the first shell assembly. The first shell assembly is provided with a first mounting structure, and the second shell assembly is formed with a second mounting structure matched with the first mounting structure. The first shell assembly is rotationally connected with the second shell assembly through cooperation of the first mounting structure and the second mounting structure, so as to drive the detection element to rotate relative to the second shell assembly. In this way, the first shell assembly and the second shell assembly are rotationally connected by designing the sensor shell as the first shell assembly and the second shell assembly which can relatively rotate, so that the detection element is driven to adjust the angle and adapt to the detection requirements of different installation scenes. Moreover, the orientation of the detection element is adjusted by rotating the first shell assembly, so that the detection range of the detection element accurately covers the target area and the dead angle of detection is reduced. In addition, the rotating structure is realized through mechanical cooperation, without the need of complex electric control components, so that the cost and the fault risk are reduced.

Description

Technical Field

[0001] This application relates to the field of human body detection technology, and in particular to a human body sensing sensor. Background Technology

[0002] Human body sensors can detect human activity. In related technologies, the relative positions of the sensor's housing and internal detection element are fixed. However, this means that after installation, the sensor can only detect human activity within a fixed range, which is insufficient to meet specific application needs. Utility Model Content

[0003] This application provides a human body sensing sensor.

[0004] This application provides a human body sensing sensor, which includes a housing and a detection element. The housing includes a first housing assembly and a second housing assembly, and the detection element is fixedly connected to the first housing assembly. The first housing assembly has a first mounting structure, and the second housing assembly has a second mounting structure that cooperates with the first mounting structure. The first housing assembly is rotatably connected to the second housing assembly through the cooperation of the first mounting structure and the second mounting structure, so as to drive the detection element to rotate relative to the second housing assembly.

[0005] Thus, a human body sensing sensor is provided, comprising a housing and a detection element. The housing includes a first housing assembly and a second housing assembly, with the detection element fixedly connected to the first housing assembly. The first housing assembly has a first mounting structure, and the second housing assembly has a second mounting structure that mates with the first mounting structure. The first housing assembly is rotatably connected to the second housing assembly through the cooperation of the first and second mounting structures, thereby causing the detection element to rotate relative to the second housing assembly. In this way, by designing the sensor housing as a first and second housing assembly capable of relative rotation, and fixing the detection element to the first housing assembly, the rotational connection between the first and second housing assemblies is achieved using the cooperating first and second mounting structures, thereby allowing the detection element to adjust its angle to adapt to the detection needs of different installation scenarios. Furthermore, by rotating the first housing assembly to adjust the orientation of the detection element, its detection range accurately covers the target area, reducing blind spots. In addition, the rotation structure is achieved through mechanical cooperation, eliminating the need for complex electronic control components, thus reducing cost and the risk of failure.

[0006] In some embodiments, the first housing assembly includes a body and a plurality of flanges arranged radially and spaced apart from each other along the body, with a snap-fit ​​support provided at the interval between two adjacent flanges.

[0007] Thus, the first housing assembly includes a body and a plurality of flanges arranged radially and spaced apart from each other, with a snap-fit ​​support provided at the interval between adjacent flanges. In this way, the radially spaced flanges enhance the overall rigidity of the body through "radial support," preventing deformation or breakage of the body under stress, ensuring the long-term stability of the rotating structure, and extending its service life. The flanges provide lateral support for the snap-fit ​​support, preventing deformation or breakage of the snap-fit ​​due to excessive force on one side during engagement or disengagement, ensuring the strength of the snap-fit ​​connection, and thus ensuring that the snap-fit ​​and mating parts always maintain effective engagement, preventing loosening. The spacing between adjacent flanges not only provides an installation position for the snap-fit ​​support but also serves as an assembly positioning reference for other components.

[0008] In some embodiments, the first mounting structure includes a groove or a through hole, and the first mounting structure is formed on the body; the second mounting structure includes a boss.

[0009] Thus, the first mounting structure includes a groove or a through hole, and is formed on the body. The second mounting structure includes a boss. When the boss is embedded in the groove or through hole, a "shaft-hole" or "protrusion-recess" rotary joint is formed. The boss can slide along the extension direction of the groove / through hole, thereby enabling smooth rotation of the first housing assembly. Furthermore, after the boss is embedded in the groove / through hole, the sidewall of the groove or the inner wall of the through hole provides radial constraint on the boss, preventing radial misalignment or separation of the first and second housing assemblies during use due to vibration, external force contact, etc., ensuring a stable connection between the two and avoiding positional displacement of the detection element due to structural loosening during rotation or use.

[0010] In some embodiments, the housing further includes a third housing assembly, the third housing assembly including an end face; The end face is provided with a buckle that cooperates with the buckle support, and the third housing assembly is engaged with the first housing assembly through the cooperation of the buckle and the buckle support; The third housing assembly is further provided with a protrusion, which abuts against the flange when the third housing assembly and the first housing assembly are engaged.

[0011] Thus, the outer casing also includes a third outer casing assembly, which includes an end face. The end face is provided with a snap fastener that mates with a snap-fit ​​support. The third outer casing assembly engages with the first outer casing assembly through the engagement of the snap fastener and the snap-fit ​​support. The third outer casing assembly also includes a protrusion that abuts against a flange when the third and first outer casing assemblies are engaged. In this way, the third outer casing assembly directly engages with the snap-fit ​​support of the first outer casing assembly via the snap fastener on its end face, a simple and quick operation. Furthermore, the abutment between the protrusion and the flange when the third and first outer casing assemblies are engaged creates a sealing gap, ensuring unobstructed detection channels for the detection element.

[0012] In some embodiments, the detection element includes a multimode sensor assembly and a circuit board, the multimode sensor assembly including sensors with at least two mutually exclusive detection dimensions, and the circuit board and the end face being arranged in parallel. The circuit board includes a first surface and a second surface that are opposite to each other, and the multimode sensor assembly is mounted on the first surface.

[0013] Thus, the detection element includes a multimode sensor assembly and a circuit board. The multimode sensor assembly includes at least two mutually exclusive sensors with different detection dimensions, and the circuit board and end face are arranged in parallel. The circuit board then includes a first surface and a second surface facing away from each other, and the multimode sensor assembly is mounted on the first surface. By using at least two mutually exclusive sensors with different detection dimensions, the detection scenario can be complementaryly covered, thereby avoiding false triggering or missed detection by a single sensor and improving detection accuracy in complex environments. Furthermore, the parallel arrangement of the circuit board and end face avoids signal obstruction or detection angle shift caused by layout tilt. In addition, the multimode sensor assembly is centrally located on the first surface, allowing for a smaller overall size of the detection element, fitting into a compact housing design, while reducing internal wiring complexity and minimizing the risk of circuit failure.

[0014] In some embodiments, the sensor includes at least two of a pyroelectric sensor, millimeter-wave radar, carbon dioxide sensor, and / or a sound sensor; The pyroelectric sensor is used to detect infrared radiation signals in the environment where the human body sensor is located; the millimeter-wave radar is used to detect point cloud signals in the environment where the human body sensor is located; the carbon dioxide sensor is used to detect carbon dioxide concentration in the environment where the human body sensor is located; and the sound sensor is used to detect sound signals in the environment where the human body sensor is located.

[0015] Thus, the sensor includes at least two of the following: a pyroelectric sensor, millimeter-wave radar, a carbon dioxide sensor, and / or a sound sensor. Specifically, the pyroelectric sensor detects infrared radiation signals from the environment in which the human body sensor is located; the millimeter-wave radar detects point cloud signals from the environment; the carbon dioxide sensor detects the carbon dioxide concentration in the environment; and the sound sensor detects sound signals from the environment. In this way, the four types of sensors each focus on different detection dimensions, with no functional overlap and complementing each other. The inclusion of at least two of these sensors allows for adaptation to various scenarios, improving detection accuracy and reducing false alarm and false negative rates.

[0016] In some embodiments, when the sensor includes the pyroelectric sensor, the end face is further provided with a first through hole for accommodating the pyroelectric sensor.

[0017] Thus, when the sensor includes a pyroelectric sensor, a first through hole is also provided on the end face for accommodating the pyroelectric sensor. In this way, by providing the first through hole, the detection surface of the pyroelectric sensor can be directly exposed to the external environment, ensuring that the infrared radiation signal from the human body can be directly and without attenuation received by the pyroelectric sensor, avoiding the reduction in detection distance and sensitivity caused by the outer shell blocking it.

[0018] In some embodiments, the end face is further provided with a second through hole, the first surface is provided with a light-emitting element, and the second through hole is used to install a light guide element, the light guide element guiding the light path of the light-emitting element.

[0019] Therefore, a second through hole is also provided on the end face. A light-emitting element is provided on the first surface, and the second through hole is used to install a light guide element. The light guide element guides the light path of the light-emitting element. In this way, the light guide element establishes a stable light path channel through the second through hole. Even if there is a small distance between the light-emitting element and the end face, the light can be efficiently transmitted to the outside, avoiding display failure caused by obstruction or misalignment, and ensuring that the user can accurately obtain the working status of the sensor.

[0020] In some embodiments, the human body sensor is further provided with a fourth housing assembly, which is fixedly connected to the first housing assembly and covers the second surface; The fourth housing assembly also has a third through hole, and the second surface is provided with an external line interface. The third through hole is used to accommodate the external line interface.

[0021] Thus, the human body sensor also includes a fourth housing assembly, which is fixedly connected to the first housing assembly and covers the second surface. Furthermore, the fourth housing assembly has a third through-hole, and the second surface has an external wiring interface, which is accommodated by the third through-hole. In this way, by covering the second surface of the circuit board with the fourth housing assembly and fixing it to the first housing assembly, all-around protection of precision components can be achieved, extending the lifespan of the human body sensor. Moreover, the third through-hole allows external wiring to directly interface with the second surface of the circuit board without disassembling the fourth housing assembly, simplifying the wiring process during installation.

[0022] In some embodiments, the human body sensor is further provided with a spring clip, and the second housing assembly is further provided with a clip lug for securing the spring clip.

[0023] Thus, the human body sensor is also equipped with a spring clip, and the second housing assembly is also equipped with a clip lug for securing the spring clip. In this way, the spring clip and the clip lug cooperate to secure the human body sensor using the elastic tension of the spring clip. Furthermore, the elastic force of the spring clip and the mechanical limiting effect of the clip lug prevent the human body sensor from falling off or loosening during use.

[0024] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein: Figure 1 This is a schematic diagram of the structure of a human body sensing sensor according to certain embodiments of this application; Figure 2 This is a schematic diagram of the structure of the first housing assembly according to certain embodiments of this application; Figure 3 This is a schematic diagram of the structure of the second housing assembly according to certain embodiments of this application; Figure 4 This is one of the three-view schematic diagrams of a human body sensing sensor according to certain embodiments of this application; Figure 5 This is the second of three-view schematic diagrams of a human body sensing sensor according to certain embodiments of this application; Figure 6 This is a schematic diagram of the structure of the third housing assembly according to certain embodiments of this application; Figure 7This is one of the schematic diagrams of the circuit board structure according to certain embodiments of this application; Figure 8 This is a second schematic diagram of the circuit board structure according to certain embodiments of this application; Figure 9 This is the third schematic diagram of the circuit board structure according to certain embodiments of this application; Figure 10 This is a schematic diagram of the structure of the fourth housing assembly according to certain embodiments of this application. Detailed Implementation

[0026] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0027] Human body sensors, as intelligent detection devices widely used in homes, offices, and commercial spaces, can capture human activity signals and then link with terminal devices such as lighting, security, and home appliances to achieve automated control, greatly improving the convenience of life and work. In related technologies, the housing of human body sensors is mostly an integrated fixed structure, and the internal core detection element is rigidly connected to the housing by a bracket or screws. The relative position of the two is fixed after production and assembly, without any adjustable mechanical structure.

[0028] However, this fixed design is difficult to adapt to diverse installation and usage needs. On the one hand, the detection range of human body sensors is usually conical or fan-shaped at a specific angle (determined by the physical characteristics of the detection element). When the sensor is installed off-center (such as in ceiling corners, wall edges, or the ends of narrow corridors), the fixed detection angle will cause a significant shift in the effective detection area. For example, a sensor installed in a bedroom corner may cover a large portion of the blank wall, while areas with high-frequency activity, such as the edge of the bed or next to a wardrobe, will become blind spots. If installed in the center of the ceiling in an open office hall, the angle cannot be flexibly adjusted to cover the activities at the edges of the workstations. On the other hand, the differentiated spatial layouts of different usage scenarios, such as irregular floor plans in homes, open-plan office layouts, and dynamic display layouts in commercial showrooms, place higher demands on the adaptability of the detection range of human body sensors. Once a traditional fixed-structure sensor is installed, its detection range cannot be adjusted. Even if furniture placement or workstation layout changes subsequently, the sensor must be disassembled, reinstalled, or even replaced, which is cumbersome and costly. Furthermore, the fixed-angle design can further reduce the effective detection area due to environmental obstructions (such as furniture and decorative items), leading to frequent missed alarms (failure to detect effective human activity) or false alarms (false triggering of non-human signals) by the sensor, which seriously affects the user experience and fails to meet the user's needs.

[0029] Based on the above issues, please refer to Figure 1-3 , Figure 1 This is a schematic diagram of the structure of the human body sensing sensor 1000. Figure 2 This is a schematic diagram of the structure of the first outer casing assembly 110. Figure 3 This is a schematic diagram of the structure of the second housing assembly 120. This application provides a human body sensing sensor 1000, which includes a housing 100 and a detection element 200. The housing 100 includes a first housing assembly 110 and a second housing assembly 120, and the detection element 200 is fixedly connected to the first housing assembly 110. The first housing assembly 110 has a first mounting structure 111, and the second housing assembly 120 has a second mounting structure 121 that cooperates with the first mounting structure 111. The first housing assembly 110 is rotatably connected to the second housing assembly 120 through the cooperation of the first mounting structure 111 and the second mounting structure 121, so as to drive the detection element 200 to rotate relative to the second housing assembly 120.

[0030] Specifically, the human body sensor 1000 refers to an electronic device that can determine the presence or activity of a human body by detecting human-related signals (such as infrared radiation, movement trajectory, etc.), and is applied in scenarios such as lighting control and security monitoring.

[0031] The outer casing 100 refers to a protective structure made of rigid materials (such as plastic) used to encapsulate internal components, isolate them from external dust, moisture and impacts, and provide a mounting carrier for internal components to maintain the overall structural stability.

[0032] The first housing assembly 110 and the second housing assembly 120 refer to two independent components that are connected through a specific structure and each performs a different function. The first housing assembly 110 is mainly used to fix the detection element 200, while the second housing assembly 120 is mainly used to connect with the mounting base.

[0033] The detection element 200 refers to the core component of the human body sensing sensor 1000 that enables the detection function. It typically includes various sensor modules (such as pyroelectric sensors, radar modules, etc.) and signal processing circuits, which can collect and preliminarily process human body-related signals.

[0034] The first mounting structure 111 refers to the structure set on the first housing assembly 110. It cooperates with the second mounting structure 121 to realize the relative rotation of the first housing assembly 110 and the second housing assembly 120, and is the core carrier of the rotation function.

[0035] The second mounting structure 121 refers to the mating structure set on the second housing assembly 120. It achieves relative rotation of the first housing assembly 110 and the second housing assembly 120 by cooperating with the first mounting structure 111. It is the core carrier of the rotation function.

[0036] Understandably, the "fixed connection" between the detection element 200 and the first housing assembly 110 is the basis for the rotation function, that is, ensuring that the detection element 200 can change its angle synchronously when the first housing assembly 110 rotates. The "cooperation" between the first mounting structure 111 and the second mounting structure 121 is the path to realize the rotation function, that is, through the mechanical constraint of the two, the first housing assembly 110 can rotate relative to the second housing assembly 120 without disengaging from the connection.

[0037] When the human body sensor 1000 is installed on a base such as a ceiling or wall, the second housing assembly 120 is usually fixed at the installation position. If the installation position deviates from the center of the detection area (such as a corner), the first housing assembly 110 can be manually rotated. At this time, the first mounting structure 111 rotates relative to the second mounting structure 121, causing the detection element 200 fixed thereto to rotate synchronously until the detection direction of the detection element 200 covers the target area. The detection element 200 works normally at the rotated angle, collecting and processing human body signals (such as infrared and radar waves) to output a judgment result indicating the presence of a human body.

[0038] Please see Figure 4 and Figure 5 , Figure 4This is a three-view schematic diagram of the human body sensing sensor 1000 when the first housing assembly 110 is not rotated relative to the second housing assembly 120. Figure 5 This is a three-view schematic diagram of the human body sensing sensor 1000 after the first housing assembly 110 has rotated relative to the second housing assembly 120 by a certain angle. It can be seen that the first housing assembly 110 can rotate relative to the second housing assembly 120 by a certain angle, and after rotating by a certain angle, the inner wall of the second housing assembly 120 will limit the rotation angle of the first housing assembly 110 to prevent the rotation angle from being too large and affecting the detection range.

[0039] In summary, a human body sensing sensor 1000 is provided. The human body sensing sensor 1000 includes a housing 100 and a detection element 200. The housing 100 includes a first housing assembly 110 and a second housing assembly 120. The detection element 200 is fixedly connected to the first housing assembly 110. The first housing assembly 110 has a first mounting structure 111, and the second housing assembly 120 has a second mounting structure 121 that cooperates with the first mounting structure 111. The first housing assembly 110 is rotatably connected to the second housing assembly 120 through the cooperation of the first mounting structure 111 and the second mounting structure 121, thereby causing the detection element 200 to rotate relative to the second housing assembly 120. Thus, by designing the sensor housing 100 as a first housing assembly 110 and a second housing assembly 120 that can rotate relative to each other, and fixing the detection element 200 to the first housing assembly 110, the rotational connection of the first housing assembly 110 and the second housing assembly 120 is achieved using the cooperating first mounting structure 111 and the second mounting structure 121, thereby allowing the detection element 200 to adjust its angle to adapt to the detection requirements of different installation scenarios. Furthermore, by rotating the first housing assembly 110 to adjust the orientation of the detection element 200, the detection range is ensured to accurately cover the target area, reducing blind spots. In addition, the rotation structure is achieved through mechanical cooperation, eliminating the need for complex electronic control components, thus reducing costs and the risk of failure.

[0040] Please refer to the following: Figure 2 In some embodiments, the first housing assembly 110 includes a body and a plurality of flanges 112 arranged radially and spaced apart from each other along the body, with a snap-fit ​​support 113 provided at the interval between adjacent flanges 112.

[0041] Specifically, the body refers to the main frame of the first outer shell assembly 110, which provides a basic load-bearing structure for other structures (such as flange 112, snap-fit ​​support 113 and first mounting structure 111). It is usually made of plastic (such as ABS, PC) injection molding material and has a certain structural strength.

[0042] Radial refers to the direction extending along the radius with the central axis of the body as a reference (i.e., the direction from the center of the body to the edge), which is the arrangement reference for the flange 112 and the snap-fit ​​support 113.

[0043] Flange 112 refers to a sheet-like or block-like structure that protrudes radially outward from the body, distributed at intervals along the circumference of the body, and has both structural reinforcement and limiting functions.

[0044] The gap refers to the space between two adjacent flanges 112, the size of which matches the structure of the snap-fit ​​132 of the component to be connected (such as the third housing component 130), providing space for the snap-fit ​​132 to be received and aligned.

[0045] The snap-fit ​​support 113 refers to the protrusion or rib-like structure provided at the interval between adjacent flanges 112, which is used to cooperate with the snap-fit ​​132 of other components, bear the force when the snap-fit ​​132 is engaged, and ensure that the first housing assembly 110 and the third housing assembly 130 are firmly connected.

[0046] Understandably, the body is the basic carrier, providing a forming reference for the flanges 112 and the snap-fit ​​support 113. Its size and shape determine the overall outline of the first housing assembly 110. The flanges 112 are arranged radially at intervals along the body. On the one hand, their protruding structures enhance the radial strength of the body (dispersing external forces and preventing deformation of the body). On the other hand, the intervals formed by adjacent flanges 112 provide installation space for the snap-fit ​​support 113, while also providing circumferential limiting for the mating snaps 132 (e.g., preventing the snaps 132 from sliding circumferentially along the body when under force). The snap-fit ​​support 113 is located at the intervals, and its position strictly corresponds to the flanges 112. This ensures that when the snaps 132 of other components (such as the third housing assembly 130) are snapped into the intervals, they can accurately engage with the snap-fit ​​support 113. The elastic deformation of the snaps 132 generates a clamping force, while the snap-fit ​​support 113 provides a reverse supporting force, making the connection stable and reliable.

[0047] Thus, the first housing assembly 110 includes a body and a plurality of flanges 112 arranged radially and spaced apart from each other. A snap-fit ​​support 113 is provided at the interval between two adjacent flanges 112. In this way, the radially spaced flanges 112 enhance the overall rigidity of the body through "radial support," preventing deformation or breakage of the body under stress, ensuring the long-term stability of the rotating structure, and extending its service life. The flanges 112 provide lateral support for the snap-fit ​​support 113, preventing deformation or breakage of the snap-fit ​​132 due to excessive force on one side during engagement or disengagement, ensuring the strength of the snap-fit ​​132 connection, and thus ensuring that the snap-fit ​​132 and the mating parts always maintain effective engagement, preventing loosening. The spacing between adjacent flanges 112 not only provides an installation position for the snap-fit ​​support 113 but also serves as an assembly positioning reference for other components.

[0048] In some embodiments, the first mounting structure 111 includes a groove or a through hole, and the first mounting structure 111 is formed on the body; the second mounting structure 121 includes a boss.

[0049] Specifically, a groove refers to a groove-like structure formed by recesses on the surface of the body. It does not penetrate the body, has a certain depth and circumferential length, and can accommodate the boss and provide it with rotation space.

[0050] A through hole refers to a hole-like structure that penetrates the body, with a certain diameter and axial length. The boss can pass through the through hole and rotate inside the hole, serving both to accommodate and limit movement.

[0051] A boss refers to a block or columnar structure protruding from the surface of the second housing assembly 120, whose cross-sectional shape (such as circular or arc-shaped) matches the groove / through hole, and whose length is slightly less than the groove depth or through hole length to ensure that it can be inserted and rotated freely.

[0052] Understandably, the recessed space of the groove or the through-hole provides a space for the boss, and the protruding shape of the boss is embedded in the groove / through-hole. Relative rotation is achieved through the gap fit between the two (which both preserves the necessary range of motion for rotation and limits excessive wobble).

[0053] Thus, the first mounting structure 111 includes a groove or a through hole, and is formed on the body. The second mounting structure 121 includes a boss. When the boss is embedded in the groove or through hole, a "shaft-hole" or "protrusion-recess" rotary joint can be formed, and the boss can slide along the extension direction of the groove / through hole, thereby enabling smooth rotation of the first housing assembly 110. Furthermore, when the boss is embedded in the groove / through hole, the sidewall of the groove or the inner wall of the through hole will radially constrain the boss, preventing radial misalignment or separation of the first housing assembly 110 and the second housing assembly 120 during use due to vibration, external force contact, etc., ensuring that they always maintain a stable connection, thereby avoiding positional displacement of the detection element 200 due to structural loosening during rotation or use.

[0054] Please see Figure 6 , Figure 6 This is a schematic diagram of the third housing assembly 130. In some embodiments, the housing 100 further includes the third housing assembly 130, which includes an end face 131; The end face 131 is provided with a buckle 132 that cooperates with the buckle support 113. The third housing assembly 130 is engaged with the first housing assembly 110 through the cooperation of the buckle 132 and the buckle support 113. The third housing assembly 130 is also provided with a protrusion 133, which abuts against the flange 112 when the third housing assembly 130 and the first housing assembly 110 are engaged.

[0055] Specifically, the third housing component 130 refers to a component of the housing 100, which is usually the front cover structure of the sensor. Its main function is to protect the internal detection elements 200 (such as sensors and circuit boards 220) from external dust and collision interference. At the same time, as the interface that comes into contact with the external environment, it carries the structure related to functions such as status display and signal detection.

[0056] The end face 131 refers to the plane in the third housing assembly 130 that directly faces the external environment. It is the mounting carrier for the buckle 132 and the protrusion 133. Its flatness and structural accuracy directly affect the appearance and assembly stability of the sensor.

[0057] The buckle 132 refers to the elastic protrusion structure (usually made of plastic and with a certain deformation capability) provided on the end face 131. Its end is provided with a hook-shaped structure, which can be engaged with the buckle support 113. It is a component that realizes the fixed connection between the third housing assembly 130 and the first housing assembly 110.

[0058] The buckle support 113 refers to the protruding structure at the interval between adjacent flanges 112 on the first housing assembly 110, which is used to cooperate with the hook of the buckle 132, bear the clamping force when the buckle 132 is fastened, and ensure a firm connection.

[0059] The snap-fit ​​connection refers to the method of detachably connecting two parts by means of the elastic deformation of the snap-fit ​​132, without the need for additional fasteners (such as screws), and with high assembly efficiency.

[0060] The bump 133 refers to a small block-shaped structure protruding from the third housing assembly 130, which is distributed circumferentially along the end face 131 and is positioned corresponding to the flange 112 of the first housing assembly 110. It is used to contact the flange 112 to form a limit when engaged.

[0061] "Abutting" refers to the state in which the protrusion 133 and the surface of the flange 112 are in direct contact. Through mechanical contact, a constraint force is generated to prevent the two parts from rotating relative to each other, while maintaining a certain gap.

[0062] Understandably, the elastic deformation of the latch 132 allows it to engage with the gap between adjacent flanges 112 and the latch support 113, thereby axially fixing the third housing assembly 130 to the first housing assembly 110 through the force of the hook and the support surface. When the latch 132 is fully engaged, the protrusion 133 abuts against the side or end face 131 of the flange 112, restricting the circumferential relative rotation between the third housing assembly 130 and the first housing assembly 110 through friction and mechanical obstruction of the contact surfaces. Furthermore, the protrusion 133 forms a sealing gap, ensuring the unobstructed detection channel of the detection element 200.

[0063] Thus, the outer casing 100 also includes a third outer casing assembly 130, which includes an end face 131. The end face 131 is provided with a snap fastener 132 that engages with the snap fastener support 113. The third outer casing assembly 130 is engaged with the first outer casing assembly 110 through the engagement of the snap fastener 132 and the snap fastener support 113. The third outer casing assembly 130 also has a protrusion 133, which abuts against the flange 112 when the third outer casing assembly 130 and the first outer casing assembly 110 are engaged. In this way, the third outer casing assembly 130 directly engages with the snap fastener support 113 of the first outer casing assembly 110 via the snap fastener 132 on the end face 131, which is simple and quick to operate. Furthermore, the abutment between the protrusion 133 and the flange 112 when the third outer casing assembly 130 and the first outer casing assembly 110 are engaged creates a sealing gap, ensuring the unobstructed detection channel of the detection element 200.

[0064] Please see Figure 7 and Figure 8 , Figure 7 and Figure 8 This is a schematic diagram of the circuit board 220. In some embodiments, the detection element 200 includes a multimode sensor assembly 210 and a circuit board 220. The multimode sensor assembly 210 includes sensors with at least two mutually exclusive detection dimensions. The circuit board 220 and the end face 131 are arranged in parallel. The circuit board 220 includes a first surface 221 and a second surface 222 that are opposite to each other, and the multimode sensor assembly 210 is mounted on the first surface 221.

[0065] Specifically, the multimode sensor assembly 210 refers to a combined module composed of two or more sensors with different detection principles, which achieves complementary detection through multi-dimensional signal acquisition, thereby improving the overall accuracy and reliability of sensing.

[0066] The mutual exclusion of detection dimensions can be understood as the fact that the detection objects, principles or physical dimensions of different sensors do not overlap (such as one detecting infrared radiation, one detecting millimeter wave reflection, and one detecting gas concentration), each covering different sensing scenarios, avoiding redundancy in detection functions, and forming complementarity.

[0067] Circuit board 220 refers to an electronic component mounting carrier made of insulating substrate, conductive lines and solder pads, used to fix multimode sensor assembly 210 and other electronic components, and realize circuit connection and signal transmission between components.

[0068] Parallel setup can be understood as the relative positional relationship between the board surface of circuit board 220 and end face 131 without any included angle, ensuring that the components on circuit board 220 are precisely aligned with the corresponding structures on end face 131, and ensuring that the detection angle of detection element 200 and the orientation of third housing assembly 130 are consistent.

[0069] The first surface 221 refers to the side surface of the circuit board 220 facing the end face 131 of the third housing assembly 130. It is the mounting surface of the multimode sensor assembly 210, and its parallel relationship with the end face 131 determines the detection direction accuracy of the sensor.

[0070] The second surface 222 refers to the side surface of the circuit board 220 that is away from the end surface 131. It is usually used to install auxiliary electronic components such as terminals, capacitors, and resistors, and its function is divided with that of the first surface 221.

[0071] Understandably, the circuit board 220 is fixed to the first housing assembly 110 by a mechanical structure, providing a stable mounting reference for the multimode sensor assembly 210; on the other hand, it realizes the circuit connection between each sensor through conductive lines, providing a hardware foundation for signal transmission and data fusion.

[0072] During assembly, as the third housing assembly 130 engages with the first housing assembly 110 (the snap-fit ​​132 and snap-fit ​​support 113 cooperate), the through holes on the end face 131 are precisely fitted onto the outer sides of each sensor on the first surface 221, forming an unobstructed detection channel. When the sensors are working, the different sensors in the multi-mode sensor assembly 210 synchronously collect environmental signals and perform fusion analysis on the multi-dimensional signals (such as logical judgment, threshold comparison, and interference filtering), ultimately outputting a judgment result of "whether a human body is present".

[0073] Thus, the detection element 200 includes a multimode sensor assembly 210 and a circuit board 220. The multimode sensor assembly 210 includes sensors with at least two mutually exclusive detection dimensions, and the circuit board 220 and end face 131 are arranged in parallel. The circuit board 220 includes a first surface 221 and a second surface 222 facing away from each other, and the multimode sensor assembly 210 is mounted on the first surface 221. In this way, by setting at least two mutually exclusive sensors, the detection scenario can be complementaryly covered, thereby avoiding false triggering or missed detection by a single sensor and improving detection accuracy in complex environments. Furthermore, the parallel arrangement of the circuit board 220 and end face 131 avoids signal obstruction or detection angle shift caused by layout tilt. In addition, the multimode sensor assembly 210 is centrally located on the first surface 221, which allows the overall size of the detection element 200 to be smaller, fitting the compact design of the housing 100, while reducing internal wiring complexity and minimizing the risk of circuit failure.

[0074] In some implementations, the sensor includes at least two of the following: a pyroelectric sensor, a millimeter-wave radar, a carbon dioxide sensor, and / or a sound sensor. The pyroelectric sensor is used to detect the infrared radiation signal of the environment in which the human body sensor 1000 is located; the millimeter-wave radar is used to detect the point cloud signal of the environment in which the human body sensor 1000 is located; the carbon dioxide sensor is used to detect the carbon dioxide concentration of the environment in which the human body sensor 1000 is located; and the sound sensor is used to detect the sound signal of the environment in which the human body sensor 1000 is located.

[0075] Specifically, please refer to Figure 9 , Figure 9 Figure 9 shows a schematic diagram of the circuit board 220. When the aforementioned sensors are present, their layout on the circuit board 220 can be illustrated as shown in Figure 9.

[0076] Among them, the pyroelectric sensor 403 refers to a sensor that works based on the pyroelectric effect. When a human body or other isothermal object enters its detection range, it will release infrared radiation of a specific wavelength. The pyroelectric crystal inside the sensor receives the radiation and generates a change in charge, which is then converted into an identifiable electrical signal, enabling it to sense "stationary or moving isothermal living bodies".

[0077] Millimeter-wave radar 401 refers to a radar sensor that operates in the millimeter-wave frequency band (usually 30GHz-300GHz). It transmits millimeter waves and receives reflected echoes to form point cloud data (a collection of spatial information composed of a large number of reflection points). It can penetrate thin obstacles such as curtains and glass and can sense the "position, speed and outline of moving targets".

[0078] The 404 carbon dioxide sensor refers to a sensor that operates based on infrared absorption or electrochemical principles, capable of detecting the volume fraction of carbon dioxide gas in the environment in real time (usually measured in ppm). Human respiration continuously releases carbon dioxide, and changes in carbon dioxide concentration can reflect the presence of humans and population density.

[0079] The sound sensor 402 is a sensor that converts ambient sound wave signals into electrical signals. It can capture sounds generated by human activity (such as voice, footsteps, and friction sounds) and ambient background noise, and determine whether there is any living activity by observing changes in sound intensity and frequency. The sound sensor 402 and the carbon dioxide sensor 404 are symmetrically distributed about the pyroelectric sensor 403.

[0080] Infrared radiation signals refer to electromagnetic wave signals radiated outward by isothermal objects such as the human body. The wavelength is usually between 8-14μm. It is the core detection object of pyroelectric sensors, and its intensity change is directly related to the presence and distance of the human body.

[0081] Point cloud signals refer to discrete point sets formed by the reflection of electromagnetic waves emitted by millimeter-wave radar after encountering a target. The spatial position and trajectory of the target can be reconstructed through algorithms.

[0082] Carbon dioxide concentration refers to the amount of carbon dioxide in a unit volume of air. In a normal indoor environment where no one is present, the concentration is about 400-600 ppm. When someone is active, the concentration gradually increases with respiration, which is an indirect signal to indicate the presence of a human body.

[0083] Sound signals refer to mechanical wave signals generated by the vibration of objects. They propagate through the air. Sounds generated by human activities have a specific frequency range (usually 20Hz-20kHz) and can be distinguished from ambient background noise.

[0084] Understandably, by cooperating with at least two mutually exclusive sensors, multi-dimensional signals are collected to complementarily cover the blind spots of a single sensor. The data fusion algorithm filters out interference through cross-validation, and can still accurately identify the presence of a human body even in complex scenarios such as high temperature, multiple obstructions, and stationary people.

[0085] Thus, the sensor includes at least two of the following: a pyroelectric sensor, millimeter-wave radar, a carbon dioxide sensor, and / or a sound sensor. Specifically, the pyroelectric sensor detects infrared radiation signals from the environment in which the human body sensor 1000 is located; the millimeter-wave radar detects point cloud signals from the environment in which the human body sensor 1000 is located; the carbon dioxide sensor detects the carbon dioxide concentration from the environment in which the human body sensor 1000 is located; and the sound sensor detects sound signals from the environment in which the human body sensor 1000 is located. In this way, the four types of sensors each focus on different detection dimensions, and their functions do not overlap, forming a complementary relationship. The inclusion of at least two of the following sensors—pyroelectric sensor, millimeter-wave radar, carbon dioxide sensor, and / or sound sensor—allows for adaptation to various scenarios, improving detection accuracy and reducing false alarm and false negative rates.

[0086] Please refer to the following: Figure 6 In some embodiments, when the sensor includes a pyroelectric sensor, the end face 131 is also provided with a first through hole 134 for accommodating the pyroelectric sensor.

[0087] Specifically, the human body sensing sensor 1000 includes a housing 100 (including a first housing assembly 110, a second housing assembly 120, and a third housing assembly 130) and a detection element 200 (including a multimode sensor assembly 210 and a circuit board 220). The third housing assembly 130 includes an end face 131, which is engaged with the snap-fit ​​support 113 of the first housing assembly 110 via a snap-fit ​​132. The circuit board 220 of the detection element 200 is parallel to the end face 131, and the multimode sensor assembly 210 (including sensors with at least two mutually exclusive detection dimensions) is mounted on the first surface 221 of the circuit board 220. When the multimode sensor assembly 210 includes a pyroelectric sensor, the end face 131 of the third housing assembly 130 has a first through hole 134 for accommodating the pyroelectric sensor.

[0088] The first through hole 134 can be understood as a hole-like structure opened on the end face 131. Its size and shape match the shape of the pyroelectric sensor and are used to provide installation space for the pyroelectric sensor.

[0089] Since pyroelectric sensors require direct reception of external infrared radiation to function, they must be exposed to the external environment. The third housing assembly 130, acting as a protective device for the detection element 200, must simultaneously protect internal components, ensure sensor detection, and maintain overall structural stability. Therefore, when the sensor includes a pyroelectric sensor, a first through-hole 134 is provided on the end face 131 to allow the pyroelectric sensor to detect external radiation, ensuring unobstructed reception of infrared radiation. Simultaneously, the first through-hole 134 houses the pyroelectric sensor inside the end face 131, preventing it from protruding from the housing 100 and thus preventing collision damage or affecting the aesthetics of the human body sensor 1000.

[0090] Thus, when the sensor includes a pyroelectric sensor, the end face 131 also has a first through hole 134 for accommodating the pyroelectric sensor. By providing the first through hole 134, the detection surface of the pyroelectric sensor can be directly exposed to the external environment, ensuring that the infrared radiation signal from the human body can be directly and without attenuation received by the pyroelectric sensor, avoiding the reduction in detection distance and sensitivity caused by the outer casing 100 obstructing the signal.

[0091] Please refer to the following: Figure 6 and Figure 9 In some embodiments, the end face 131 is further provided with a second through hole 135, the first surface 221 is provided with a light-emitting element 223, the second through hole 135 is used to install a light guide element 136, and the light guide element 136 guides the light path of the light-emitting element 223.

[0092] Specifically, the second through hole 135 can be understood as a hole-like structure opened on the end face 131, the size of which matches the light guide element 136, providing installation space for the light guide element 136, and serving as a channel for the light path from the inside to the outside.

[0093] The light-emitting element 223 usually refers to light-emitting devices such as light-emitting diodes, which can provide feedback on the working status of the sensor through light signals.

[0094] The light guide element 136 refers to a component made of light-transmitting material (such as acrylic, PC, etc.), which has good light conductivity and can directionally transmit the light emitted by the light-emitting element 223 to the outside.

[0095] The optical path refers to the path that light travels during propagation. The light guide element 136 regulates the optical path through its own structure (such as refraction and reflection design) to ensure efficient and directional light transmission.

[0096] When the human body sensor 1000 is working, the light-emitting element 223 needs to transmit the status signal to the user in the form of light. However, if the light-emitting element 223 is directly exposed, it is easily damaged by the external environment (dust, impact), and the light diffusion will cause the display to be unclear. If the light-emitting element 223 is completely covered by the housing 100, the light cannot pass through, and the user cannot obtain the status information.

[0097] Therefore, the light-emitting element 223 is soldered and fixed to the first surface 221 of the circuit board 220, and its position corresponds to the second through hole 135 on the end face 131. Furthermore, the circuit board 220 is fixed to the first housing assembly 110 by studs or other structures, and remains parallel to the end face 131. The end face 131 of the third housing assembly 130 is snapped into the first housing assembly 110 by a snap fastener 132. At this time, the light guide element 136 is precisely fitted into the second through hole 135. One end of the light guide element 136 is in contact with the light-emitting element 223 (or a small gap is reserved to reduce light loss), and the other end protrudes slightly or is flush with the end face 131.

[0098] Thus, the end face 131 also has a second through hole 135, and the first surface 221 is provided with a light-emitting element 223. The second through hole 135 is used to install a light guide element 136, which guides the light path of the light-emitting element 223. In this way, the light guide element 136 establishes a stable light path channel through the second through hole 135. Even if there is a small distance between the light-emitting element 223 and the end face 131, the light can be efficiently transmitted to the outside, avoiding display failure caused by obstruction or misalignment, and ensuring that the user can accurately obtain the working status of the sensor.

[0099] Please see Figure 2 , Figure 8 and Figure 10In some embodiments, the human body sensor 1000 is further provided with a fourth housing assembly 140, which is fixedly connected to the first housing assembly 110 and covers the second surface 222. The fourth housing assembly 140 also has a third through hole 141, and the second surface 222 is provided with an external line interface 224. The third through hole 141 is used to accommodate the external line interface 224.

[0100] Specifically, the fourth housing assembly 140 refers to a component of the housing 100, typically the back cover structure of the sensor. Its main function is to protect the electronic components on the second surface 222 of the circuit board 220, isolate them from external dust, moisture and mechanical impact, and provide structural adaptation for external circuit connections.

[0101] The second surface 222 refers to the side surface of the circuit board 220 facing away from the end face 131 of the third housing assembly 130. It mainly houses external line interface 224, power supply module, capacitors and other auxiliary electronic components, forming a functional partition with the sensor assembly of the first surface 221.

[0102] The third through hole 141 refers to the hole-like structure opened on the fourth housing assembly 140. Its size matches the external line interface 224, providing an exposed channel for the interface and preventing the interface from falling off due to external force through edge limiting.

[0103] The external line interface 224 is mounted on the electrical connection components (such as terminal blocks, USB interfaces, and terminals) on the second surface 222 to realize the circuit connection between the sensor and external devices (such as power supplies, controllers, and alarm devices) and to transmit power and signals.

[0104] Understandably, the fourth housing assembly 140 is rigidly connected to the first housing assembly 110 via screws, clips 132, etc., ensuring that the fourth housing assembly 140 can tightly cover the second surface 222, forming a closed space and protecting the interface and components of the second surface 222 from external environmental corrosion. The position of the third through hole 141 is precisely aligned with the external circuit interface 224 of the second surface 222, with the interface portion exposed through the through hole. This facilitates the insertion and removal of external circuits and provides radial constraint to the interface through the edge of the through hole, preventing the interface from loosening or shifting due to pulling or vibration. The external circuit interface 224 of the second surface 222 and the sensor assembly of the first surface 221 are located on opposite sides of the circuit board 220. The covering of the fourth housing assembly 140 and the protection of the third housing assembly 130 ensure that the components on both sides of the circuit board 220 are under closed protection. At the same time, the "external connection" and "signal detection" are respectively achieved through their respective through holes (the third through hole 141, the first through hole 134 and the second through hole 135 on the end face 131), and the functions do not interfere with each other.

[0105] Thus, the human body sensor 1000 also includes a fourth housing assembly 140, which is fixedly connected to the first housing assembly 110 and covers the second surface 222. Furthermore, the fourth housing assembly 140 has a third through-hole 141, and the second surface 222 has an external wiring interface 224, which is accommodated by the third through-hole 141. In this way, by covering the second surface 222 of the circuit board 220 with the fourth housing assembly 140 and fixing it to the first housing assembly 110, all-around protection of precision components can be achieved, extending the service life of the human body sensor 1000. Moreover, by providing the third through-hole 141, external wiring can be directly connected to the interface on the second surface 222 of the circuit board 220 without disassembling the fourth housing assembly 140, simplifying the wiring process during installation.

[0106] Please see Figure 1 and Figure 3 In some embodiments, the human body sensor 1000 is further provided with a spring clip 300, and the second housing assembly 120 is further provided with a clip lug 122, which is used to fix the spring clip 300.

[0107] Specifically, the spring clip 300 refers to the clip 132 structure made of elastic material (usually spring steel or high-strength plastic) and has the characteristic of elastic deformation. The spring clip 300 mainly consists of the clip 132 body, the elastic arm, and the engaging part. The clamping force or locking force is generated by the deformation of the elastic arm to achieve quick fixation to the installation base.

[0108] The latch lug 122 refers to the ear-shaped structure set on the second housing assembly 120. It is usually distributed in pairs symmetrically (such as 2 or 4), and has mounting holes or slots for cooperating with the fixed end of the spring latch 300. It provides a stable mounting reference for the spring latch 300 and is the load-bearing structure of the spring latch 300.

[0109] Understandably, the second housing assembly 120 serves as the "mounting connection end" of the sensor, providing a molding reference and structural support for the snap hook 122. The snap hook 122 is integrally formed with the second housing assembly 120 or fixed by fasteners to ensure that it can withstand the tension of the spring snap 300 and the overall weight of the human body sensing sensor 1000.

[0110] When installing the human body sensor 1000, the elastic arm of the spring clip 300 fixed on the hanging ear can deform under the action of external force, making it easy to insert into the reserved hole of the installation base. After insertion, the elastic arm returns to its original position, and the locking part is locked with the back or edge of the installation base, generating a continuous clamping force to achieve rapid fixation of the human body sensor 1000. The clip hanging ear 122 provides reverse support for the spring clip 300 to ensure that the clamping force is stable and does not decrease.

[0111] Thus, the human body sensor 1000 is also equipped with a spring clip 300, and the second housing assembly 120 is also equipped with a clip lug 122, which is used to fix the spring clip 300. In this way, by engaging the spring clip 300 with the clip lug 122, the elastic tension of the spring clip 300 can be used to fix the human body sensor 1000. Furthermore, the elastic force of the spring clip 300 and the mechanical limiting effect of the clip lug 122 prevent the human body sensor 1000 from falling off or loosening during use.

[0112] In this specification, the terms "specifically," "furthermore," "particularly," "understandably," etc., refer to specific features, structures, materials, or characteristics described in connection with embodiments or examples that are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0113] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of executable request code comprising one or more steps for implementing a particular logical function or process, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order according to the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0114] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A human body sensing sensor, characterized in that, The human body sensor includes a housing and a detection element. The housing includes a first housing assembly and a second housing assembly. The detection element and the first housing assembly are fixedly connected. The first housing assembly has a first mounting structure, and the second housing assembly has a second mounting structure that cooperates with the first mounting structure. The first housing assembly is rotatably connected to the second housing assembly through the cooperation of the first mounting structure and the second mounting structure, so as to drive the detection element to rotate relative to the second housing assembly.

2. The human body sensing sensor according to claim 1, characterized in that, The first housing assembly includes a body and a plurality of flanges arranged radially and spaced apart from each other along the body, with a snap-fit ​​support provided at the interval between two adjacent flanges.

3. The human body sensing sensor according to claim 2, characterized in that, The first mounting structure includes a groove or a through hole, and the first mounting structure is formed on the body; the second mounting structure includes a boss.

4. The human body sensing sensor according to claim 2, characterized in that, The housing also includes a third housing assembly, the third housing assembly including an end face; The end face is provided with a buckle that cooperates with the buckle support, and the third housing assembly is engaged with the first housing assembly through the cooperation of the buckle and the buckle support; The third housing assembly is further provided with a protrusion, which abuts against the flange when the third housing assembly and the first housing assembly are engaged.

5. The human body sensing sensor according to claim 4, characterized in that, The detection element includes a multimode sensor assembly and a circuit board. The multimode sensor assembly includes sensors with at least two mutually exclusive detection dimensions. The circuit board and the end face are arranged in parallel. The circuit board includes a first surface and a second surface that are opposite to each other, and the multimode sensor assembly is mounted on the first surface.

6. The human body sensing sensor according to claim 5, characterized in that, The sensor includes at least two of the following: pyroelectric sensor, millimeter-wave radar, carbon dioxide sensor and / or sound sensor; The pyroelectric sensor is used to detect infrared radiation signals in the environment where the human body sensor is located; the millimeter-wave radar is used to detect point cloud signals in the environment where the human body sensor is located; the carbon dioxide sensor is used to detect carbon dioxide concentration in the environment where the human body sensor is located; and the sound sensor is used to detect sound signals in the environment where the human body sensor is located.

7. The human body sensing sensor according to claim 6, characterized in that, In the case where the sensor includes the pyroelectric sensor, the end face is further provided with a first through hole for accommodating the pyroelectric sensor.

8. The human body sensing sensor according to claim 5, characterized in that, The end face is also provided with a second through hole. The first surface is provided with a light-emitting element, and the second through hole is used to install a light guide element. The light guide element guides the light path of the light-emitting element.

9. The human body sensing sensor according to claim 5, characterized in that, The human body sensor is further provided with a fourth housing assembly, which is fixedly connected to the first housing assembly and covers the second surface; The fourth housing assembly also has a third through hole, and the second surface is provided with an external line interface. The third through hole is used to accommodate the external line interface.

10. The human body sensing sensor according to claim 1, characterized in that, The human body sensor is also provided with a spring buckle, and the second housing assembly is also provided with a buckle lug, which is used to fix the spring buckle.

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