Battery mounting structure and human body induction device

Abstract

The invention provides a battery mounting structure and a human body induction device, the battery mounting structure comprises a first shell and a second shell, and the second shell covers the first shell to form a battery accommodating cavity; wherein the second shell is provided with a first locking part and a second locking part, the second shell is locked to the first shell through the first locking part, and the unlocking direction of the first locking part is set to be a first unlocking direction; the second locking part comprises an elastic arm, the elastic arm is provided with a connecting end connected with the second shell and a free end extending to the connecting end, the free end is provided with a protruding part, and the protruding part is clamped to the first shell to limit the second shell to move in the first unlocking direction; according to the structure of the elastic arm, when first unlocking force facing the first unlocking direction is applied to the second shell, the protruding part generates first torque based on the first unlocking force, and the direction of the first torque is in the same direction as the protruding direction of the protruding part. The battery mounting structure provided by the invention improves the safety of the battery compartment.

Description

Technical Field

[0001] The present invention relates to the field of smart home, and in particular to a battery installation structure and a human body sensing device. Background Art

[0002] With the development of smart homes, people's demand for smart life is getting higher and higher. To realize smart home scenes, smart sensing devices and signal transmitting devices are indispensable, such as smart sensors, wireless switches, etc. These devices all require battery power.

[0003] Battery power supply has the advantages of small size, no wiring, more flexible installation location, and easy installation. However, battery power supply also has disadvantages: the battery needs to be replaced regularly.

[0004] The battery compartment of existing smart home devices generally adopts a detachable battery cover, and the battery can be taken out after opening the battery cover. Since the battery cover is connected with an ordinary elastic buckle, when the torque or tension applied to the battery cover is too large, the elastic buckle is easy to automatically disengage, making the battery compartment easy to be opened by children, posing a safety hazard. Summary of the invention

[0005] One object of the present invention is to provide a battery installation structure, wherein during the process of opening the battery compartment, the user needs to first unlock the second locking portion so that the second shell can move toward the first unlocking direction before the first locking portion can be unlocked. The second shell can be opened only after the first locking portion is unlocked, which increases the difficulty of opening the battery compartment, prevents the battery from being pulled out by children, and greatly reduces safety hazards.

[0006] Another object of the present invention is to provide a battery mounting structure, wherein as the first torque T1 increases, the first torque T1 provides power to the elastic arm to deform in the protruding direction of the protrusion, so that the protrusion is more deeply engaged with the first shell, preventing the protrusion from falling out; and, as the first unlocking force increases, the first torque T1 will also increase, making the engagement between the protrusion and the first shell more stable, avoiding the second locking part from automatically disengaging when the first unlocking force is too large, thereby improving the safety of the battery compartment and eliminating safety hazards.

[0007] Another object of the present invention is to provide a battery installation structure, in which the user needs to apply the first unlocking force at the same time as the second unlocking force or the third unlocking force to unlock the first locking part. If the two forces are not applied simultaneously, the first locking part cannot be unlocked, further increasing the difficulty of opening the battery compartment and preventing the battery from being pulled out by children.

[0008] Another object of the present invention is to provide a battery installation structure, wherein the second shell is provided with an escape space capable of allowing the elastic arm to move in the direction of the third unlocking force.

[0009] Another object of the present invention is to provide a battery installation structure, in which the advantage of the protrusion moving toward the inner side of the first shell to disengage from the locking groove is that the user can pinch the second shell while pressing the toggle handle to apply the first unlocking force, that is, the third unlocking force and the first unlocking force can be applied simultaneously with one hand, thereby improving the operational convenience.

[0010] Another object of the present invention is to provide a battery installation structure, wherein the second unlocking force and the third unlocking force can independently drive the second locking portion to detach from the first shell without interfering with each other.

[0011] Another object of the present invention is to provide a battery installation structure, wherein a user can push a push handle downward or press it inward, so that a second unlocking force or a third unlocking force is applied to the second locking portion through the push handle.

[0012] Another object of the present invention is to provide a battery installation structure, in which the present invention utilizes the structural characteristics of the elastic arm so that the extension direction of the elastic arm is in the same direction as the first unlocking direction, so that the direction of the first abutment force F1 is opposite to the first unlocking direction, so that the protruding height of the snap-in protrusion is equivalent to the force arm of the first abutment force F1, and the first abutment force F1 generates a first torque T1 relative to the fulcrum (i.e., the connecting end), thereby achieving the direction of the first torque T1 being consistent with the protruding direction of the snap-in protrusion.

[0013] Another object of the present invention is to provide a battery installation structure, wherein when the first locking portion is locked to the first shell, the locking protrusion is lifted up by the inclined surface at the position of the pre-locking groove and then jumps into the locking groove.

[0014] Another object of the present invention is to provide a battery installation structure, wherein the inclination angle of the first limiting surface relative to the fourth direction is less than 15°, so that the first limiting surface is close to a vertical state, thereby preventing the first abutting force F1 from generating a vertical downward component force that causes the snapping protrusion to be squeezed out of the snapping groove; the inclination angle of the second limiting surface relative to the fourth direction is greater than 20°, so that the slope of the second limiting surface is flatter, the snapping protrusion is more easily lifted by the inclined surface, and the snapping protrusion can smoothly jump from the pre-slot into the snapping groove.

[0015] Another object of the present invention is to provide a battery installation structure, in which this embodiment utilizes the characteristic that the circumferential direction and the thickness direction do not intersect, so that the second unlocking direction does not intersect with the first unlocking direction, making it difficult for the user to apply the first unlocking force and the second unlocking force at the same time with only one hand, further increasing the difficulty of opening the battery compartment and preventing the battery from being picked out by children.

[0016] Another object of the present invention is to provide a battery installation structure, wherein the first unlocking direction is a rotational movement direction, and the second unlocking direction is a linear movement direction. The two have different movement types, which further increases the difficulty of opening the battery compartment.

[0017] Another object of the present invention is to provide a battery installation structure, wherein the first shell can follow the second shell to adjust the angle, and thus the sensing direction of the human body sensing device can follow the second shell to adjust.

[0018] Another object of the present invention is to provide a battery installation structure, wherein the adjustment member is connected to the edge of the second shell so that the length of the lever arm is maximized and the rotational torque is amplified.

[0019] Another object of the present invention is to provide a human body sensing device, wherein the battery installation structure is applied to the human body sensing device, so that the human body sensing device can be powered by batteries, and has the advantages of small size, no wiring, more flexible installation position, convenient installation, etc. In addition, the battery installation structure can increase the difficulty of opening the battery compartment of the human body sensing device, prevent the battery from being taken out by children, and prevent the battery from accidentally falling off.

[0020] Another object of the present invention is to provide a human body sensing device, wherein the human body sensing device combines a radar sensing module and a pyroelectric sensor to achieve dual sensing of human body activities and micro-movements; when there is no one in the target area, only the pyroelectric sensor can be used for detection, which greatly reduces the power consumption of the human body sensing device, so that the human body sensing device can be powered by a battery; when there is someone in the target area, it switches to the radar sensing mode for detection to avoid the situation where the human body cannot be detected when it is stationary, perfectly combining the advantages of the radar sensing module and the pyroelectric sensor.

[0021] Another object of the present invention is to provide a human body sensing device, wherein the gasket raises the pyroelectric sensor so that the height of the pyroelectric sensor matches that of the lens component, thereby ensuring that the sensing angle and sensing sensitivity of the pyroelectric sensor meet the requirements.

[0022] Another object of the present invention is to provide a human body sensing device, wherein three electronic components limit the gasket radially, and the gasket is clamped between the pyroelectric sensor and the first circuit board so that the gasket is axially limited, thereby eliminating the need for a special limiting structure to limit the gasket, thereby simplifying the structure and saving space.

[0023] Another object of the present invention is to provide a human body sensing device, in which the light emitted by the LED lamp is displayed to the outside through a lens component, so that the first shell does not need to have additional holes or light-transmitting windows to install the LED lamp and the photosensitive unit, thereby simplifying the structure and improving the integrity of the human body sensing device.

[0024] In order to achieve at least one of the above objectives, according to a first aspect of the present invention, there is provided a battery mounting structure, comprising a first shell and a second shell, wherein the second shell is covered on the first shell to form a battery accommodating cavity, and the battery accommodating cavity is used to accommodate a battery;

[0025] Among them, the second shell is provided with a first locking part and a second locking part, the second shell is locked to the first shell by the first locking part, and the unlocking direction of the first locking part is set to a first unlocking direction; the second locking part includes an elastic arm, the elastic arm has a connecting end connected to the second shell and a free end extending from the connecting end, the free end is provided with a protrusion, the protrusion is clamped on the first shell to limit the movement of the second shell toward the first unlocking direction; the elastic arm is constructed as follows: when the second shell is applied with a first unlocking force toward the first unlocking direction, the protrusion generates a first torque based on the first unlocking force, and the direction of the first torque is consistent with the protruding direction of the protrusion.

[0026] Further, the second locking portion can be separated from the first housing in response to a second unlocking force, and can be restored to be locked to the first housing when the second unlocking force is removed; the direction of the second unlocking force is opposite to the protruding direction of the protruding portion;

[0027] and / or,

[0028] The second locking portion can be disengaged from the first shell in response to a third unlocking force, and can be restored to be locked to the first shell when the third unlocking force is withdrawn; the direction of the third unlocking force is perpendicular to the first unlocking direction, and the direction of the third unlocking force is perpendicular to the protruding direction of the protruding portion.

[0029] Further, when the second locking portion is able to disengage from the first shell in response to the third unlocking force; the third unlocking force is directed from the outside of the second shell to the inside of the second shell, the second shell is provided with an avoidance space at the corresponding position of the elastic arm, and the avoidance space is used to avoid the elastic arm from moving in the direction of the third unlocking force; the first shell is provided with a clamping groove adapted to the protruding portion, wherein the clamping groove is connected to the inner wall of the first shell, so that the protruding portion can move to the inner side of the first shell in response to the third unlocking force to disengage from the clamping groove.

[0030] In some embodiments, when the second locking portion is disengaged from the first shell, the second shell moves toward the first unlocking direction in response to the first unlocking force, so that the first locking portion is unlocked and the first shell and the second shell are disengaged from each other.

[0031] In some embodiments, the elastic arm is disposed at an edge of the second shell, and a toggle handle is disposed at the free end of the elastic arm, and the toggle handle protrudes laterally from the elastic arm.

[0032] In some embodiments, the protrusion includes a snap-fitting protrusion, and the first shell is provided with a snap-fitting groove adapted to the snap-fitting protrusion, and when the second shell is applied with the first unlocking force, the side wall of the snap-fitting groove abuts against the snap-fitting protrusion to generate a first abutting force; the extension direction of the elastic arm is the same as the first unlocking direction, and the snap-fitting protrusion generates the first torque based on the first abutting force with the connecting end as the fulcrum.

[0033] Furthermore, the first shell is provided with a pre-slot on the side of the snap-in groove facing the first unlocking direction, and a partition rib is provided between the pre-slot and the snap-in groove. The side of the pre-slot close to the snap-in groove is an inclined surface. In the process of the first locking part being locked to the first shell, the snap-in protrusion is lifted up by the inclined surface at the position of the pre-slot and then jumps into the snap-in groove.

[0034] Further, the snap-fitting protrusion includes a first limiting surface and a second limiting surface, the first limiting surface is a side of the snap-fitting protrusion facing the first unlocking direction, and the second limiting surface is a side of the snap-fitting protrusion facing away from the first unlocking direction; wherein, taking the direction of the second shell toward the first shell as the fourth direction, the inclination angle of the first limiting surface relative to the fourth direction is less than 15°, and the inclination angle of the second limiting surface relative to the fourth direction is greater than 20°.

[0035] In some embodiments, the first locking portion is configured as a plurality of rotation buckles distributed along the circumference of the second shell, the rotation buckles are rotationally engaged with the first shell, and the first unlocking direction is the circumference of the second shell.

[0036] Further, the first shell is constructed in a cylindrical shape, the second shell is constructed in a disc shape, the second shell cover is arranged on the end of the first shell, and the end of the first shell is provided with a clamping groove adapted to the clamping protrusion; the inner wall of the first shell is provided with a rotating clamping groove adapted to the rotating clamping buckle, and the first shell is provided with a clamping entrance at one end of the rotating clamping groove, the clamping entrance is opened from the rotating clamping groove to the end of the first shell, and the rotating clamping buckle is rotated and clamped into the rotating clamping groove from the clamping entrance; a middle shell is provided inside the first shell, and a battery accommodating groove is provided in the middle shell facing the second shell, and the battery is limited in the battery accommodating groove.

[0037] In some embodiments, the battery mounting structure also includes an adjustment member connected to the second shell, the adjustment member is used for external installation and can adjust the angle relative to the second shell; the adjustment member is pivotally connected to the edge position of the second shell so that the adjustment member can amplify the rotational torque applied to the second shell.

[0038] According to a second aspect of the present invention, there is also provided a human body sensing device, comprising the above-mentioned battery installation structure, and further comprising: a sensing module for sensing a human body; a battery disposed in the battery accommodating cavity; and the sensing module is powered by the battery.

[0039] Furthermore, the human body sensing device further comprises: a first circuit board, disposed inside the first shell; an end cover, disposed on an end of the first shell away from the second shell; a second circuit board, mounted on a side of the first circuit board facing the end cover;

[0040] The sensing module includes a pyroelectric sensor and a radar sensing module. The pyroelectric sensor is arranged on a side of the first circuit board facing the end cover, and the pyroelectric sensor can be triggered in response to the irradiation of infrared light. The end cover is provided with a lens component, and the lens component is used to focus the infrared light on the pyroelectric sensor. The radar sensing module is arranged on the second circuit board, and the radar sensing module generates a radar detection wave, and the radar detection wave is emitted to the outside through the end cover. A gasket is arranged between the pyroelectric sensor and the first circuit board, and the gasket is used to raise the position of the pyroelectric sensor.

[0041] Three electronic components are arranged on one side of the first circuit board facing the end cover, and the three electronic components are distributed around the gasket to limit the radial position of the gasket; the pins of the pyroelectric sensor pass through the gasket and are welded to the first circuit board, and the gasket is clamped between the pyroelectric sensor and the first circuit board so that the gasket is axially limited; the three electronic components include two LED lamps and a capacitor, and the light emitted by the LED lamp is displayed to the outside through the lens component.

[0042] It should be understood that the above general description and the following detailed description are only exemplary and explanatory and cannot limit the present invention. The above invention contents can be combined arbitrarily, and these and other purposes of the present invention will be fully reflected through the following detailed description and drawings.

[0043] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0045] Figure 1 is a structural schematic diagram of a human body sensing device according to a first embodiment of the present invention;

[0046] Figure 2 is a schematic diagram of the changing angle of the second housing relative to the adjusting member according to the first embodiment of the present invention;

[0047] Figure 3 is a schematic structural diagram of a second housing, a first locking portion, and a second locking portion according to a first embodiment of the present invention;

[0048] Figure 4 is a schematic structural diagram of a first shell and a middle shell according to a first embodiment of the present invention;

[0049] Figure 5 is a three-dimensional cross-sectional view of the human body sensing device of the first embodiment of the present invention after the adjustment member is hidden;

[0050] Figure 6 is a schematic structural diagram of a second locking portion of the first embodiment of the present invention;

[0051] Figure 7 is a schematic diagram of the connection between the first shell and the second shell of the first embodiment of the present invention;

[0052] Figure 8 is a structural schematic diagram of the third unlocking force acting on the second locking portion of the first embodiment of the present invention;

[0053] Fig. 9 is a schematic diagram of the connection between the magnetic member and the circular iron sheet according to the first embodiment of the present invention;

[0054] Fig.10 It is a schematic diagram of the assembly of the second housing, the adjustment member and the magnetic attraction member of the first embodiment of the present invention;

[0055] Fig.11 is a schematic diagram of the connection between the first shell and the second shell of the second embodiment of the present invention;

[0056] Fig.12 is a schematic diagram of the connection between the middle shell and the battery according to the second embodiment of the present invention;

[0057] Fig.13 is a schematic diagram of the connection between the first shell and the second shell of the fourth embodiment of the present invention;

[0058] Fig.14 is a schematic diagram of the connection between the first housing, the second housing and the battery limiting plate of the fifth embodiment of the present invention;

[0059] Fig.15 is a schematic diagram of the disassembly process of the battery limiting plate according to the fifth embodiment of the present invention;

[0060] Fig.16 is an exploded view of a human body sensing device according to a first embodiment of the present invention;

[0061] Fig.17 is a partial structural exploded diagram of a human body sensing device according to a first embodiment of the present invention;

[0062] Fig.18 is a schematic structural diagram of a first circuit board according to a first embodiment of the present invention;

[0063] Fig.19 It is a schematic diagram of the connection between the end cover, the second circuit board, the lens component and the first housing according to the first embodiment of the present invention;

[0064] Fig. 20 is a cross-sectional view of an end cap, a lens member, a first circuit board, a second circuit board, and an electronic component according to a first embodiment of the present invention;

[0065] Fig.21 is a cross-sectional view of a human body sensing device according to a first embodiment of the present invention;

[0066] Fig. 22 It is a partial structural exploded view of the human body sensing device after the first shell is cut open according to the first embodiment of the present invention. DETAILED DESCRIPTION

[0067] In the description of the present invention, the terms "inside", "outside", "horizontal", "vertical", "up", "down", "top", "bottom", "left", "right" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and are not required that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0068] In the description of the present specification, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0069] In the description of the present invention, unless otherwise clearly specified and limited, the term "connection" and other terms should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The technical solutions between the various embodiments can be combined with each other, but must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0071] The battery compartment of existing smart home devices generally adopts a detachable battery cover, and the battery can be taken out after opening the battery cover. Since the battery cover is connected with an ordinary elastic buckle, when the torque or tension applied to the battery cover is too large, the elastic buckle is easy to automatically disengage, causing the battery compartment to be easily opened by children, posing a safety hazard.

[0072] In order to solve the problem of potential safety hazards in the battery compartment, according to a first aspect of the present invention, a battery installation structure is provided. Figure 1-Figure 22 , the battery installation structure provided by the present invention will be explained in detail. Figure 1-Figure 10 as well as Figure 16-Figure 22 For the first embodiment of the present invention, Figure 7 and Figure 3As shown, the battery mounting structure includes a first shell 11 and a second shell 2, and the second shell 2 is covered on the first shell 11 to form a battery accommodating cavity, and the battery accommodating cavity is used to accommodate a battery 9; wherein, the second shell 2 is provided with a first locking portion 21 and a second locking portion 22, and the second shell 2 is locked to the first shell 11 through the first locking portion 21, and the unlocking direction of the first locking portion 21 is set to a first unlocking direction; the second locking portion 22 includes an elastic arm 222, and the elastic arm 222 has a connecting end connected to the second shell 2 and a free end extending from the connecting end, and the free end is provided with a protrusion 221, and the protrusion 221 is clamped on the first shell 11 to limit the movement of the second shell 2 toward the first unlocking direction, thereby limiting the unlocking of the first locking portion 21. During the process of opening the battery compartment, the user needs to first unlock the second locking part 22 so that the second shell 2 can move toward the first unlocking direction before unlocking the first locking part 21. The second shell 2 can be opened only after the first locking part 21 is unlocked, which increases the difficulty of opening the battery compartment and prevents the battery 9 from being pulled out by children, greatly reducing safety hazards.

[0073] The connection between the elastic arm 222 and the second shell 2 can be an integral molding or a fixed connection. The locking can be understood as a connection method that can switch between locked and unlocked states, such as by snap-fit ​​connection, by plug-in connection, by threaded connection, etc. When the first locking portion 21 is locked to the first shell 11, the second shell 2 is closely connected to the first shell 11, and when the first locking portion 21 is unlocked from the first shell 11, the second shell 2 is disconnected from the first shell 11. In some exemplary embodiments, the first locking portion 21 can be a rotating snap, a thread, a linear slide, etc., and accordingly, the first unlocking direction can be a rotational direction or a linear direction. The first unlocking direction of the present invention is described in detail with the rotational direction as an example, but the protection scope of the present invention also includes the case where the first unlocking direction is a linear direction. When the second shell 2 is slidably connected to the first shell 11, the first unlocking direction is a linear direction. The second locking portion 22 also has two states: locked and unlocked. When the protrusion 221 is engaged with the first shell 11, the second locking portion 22 is in a locked state, and the second locking portion 22 restricts the second shell 2 from moving in the first unlocking direction. When the protrusion 221 is disengaged from the first shell 11, the second locking portion 22 is in an unlocked state, and the second locking portion 22 no longer restricts the movement of the second shell 2.

[0074] It should be noted that the battery mounting structure provided by the present invention can be applicable to button batteries, dry batteries or other types of batteries. The present invention is described in detail using button batteries as an example, but the protection scope of the present invention is not limited to button batteries.

[0075] It should be noted that the battery installation structure provided by the present invention is applicable to a variety of electronic products, such as smart sensors, wireless switches, smart thermometers and hygrometers, etc. The embodiment of the present invention is only described in detail using the human body sensing device 100 as an example, but the protection scope of the present invention is not limited to the human body sensing device 100.

[0076] Furthermore, if Figure 6 As shown in the left figure, it is a common elastic buckle structure. When a force in the first unlocking direction is too large, the common elastic buckle is easily disengaged automatically. The reason is that when the force in the first unlocking direction is applied to the elastic buckle, the hook of the elastic buckle is abutted by the clamping groove to generate a first abutting force F1. The first abutting force F1 will cause the elastic buckle to generate a clockwise torque T1. When the torque T1 is large, the torque will drive the elastic buckle to bend downward, causing the hook to automatically disengage from the clamping groove. If the second locking part 22 of the present invention adopts a common elastic buckle, when the force in the first unlocking direction is too large, the second locking part 22 is easily unlocked automatically, which poses a certain safety hazard.

[0077] Therefore, in order to further improve the safety of the battery compartment, the second locking portion 22 used in the present invention has an anti-drop function. Figure 6 The right figure shows the structure of the second locking part 22. The elastic arm 222 of the second locking part 22 is constructed as follows: when the second housing 2 is applied with a first unlocking force in the first unlocking direction, the protruding part 221 generates a first torque T1 based on the first unlocking force. The direction of the first torque T1 is consistent with the protruding direction of the protruding part 221. As the first torque T1 increases, the first torque T1 provides the elastic arm 222 with a power to deform in the protruding direction of the protruding part 221, so that the protruding part 221 is more deeply engaged with the first housing 11 to prevent the protruding part 221 from coming out; and as the first unlocking force increases, the first torque T1 will also increase, so that the engagement between the protruding part 221 and the first housing 11 is more stable. This prevents the second locking part 22 from automatically disengaging when the first unlocking force is too large, improves the safety of the battery compartment, and eliminates safety hazards. Among them, the first unlocking force can be understood as the force that unlocks the first locking part 21. The elastic arm 222 may be a straight arm or a curved arm, and the protrusion 221 may be a structure such as a hook or a bump. The protrusion 221 cooperates with the elastic arm 222 to convert the first unlocking force into the first torque T1. The direction of the first torque T1 is consistent with the protruding direction of the protrusion 221, which can be understood as the direction of the first torque T1 at the position of the protrusion 221 coincides with at least part of the protruding direction of the protrusion 221. In a preferred embodiment, the protruding direction of the protrusion 221 is tangent to the first torque T1.

[0078] In some embodiments, Figure 5 As shown, the second locking portion 22 can be disengaged from the first shell 11 in response to a second unlocking force, and can be restored to be connected to the first shell 11 when the second unlocking force is removed; the direction of the second unlocking force is opposite to the protruding direction of the protruding portion 221; that is, the second unlocking force can move the second locking portion 22, and the elastic arm 222 is elastically deformed in response to the second unlocking force, and the protruding portion 221 is downwardly disengaged from the engaging groove 113 of the first shell 11 under the action of the second unlocking force, and the protruding portion 221 loses its limiting effect, and the second locking portion 22 no longer restricts the movement of the second shell 2. When the second unlocking force is removed, the deformation of the elastic arm 222 is restored, and the protruding portion 221 is again engaged in the engaging groove 113, and the second locking portion 22 restricts the movement of the second shell 2. The direction of the second unlocking force is the second unlocking direction. Figure 5 In the embodiment, the second shell 2 is disc-shaped, and the second unlocking direction is parallel to the axial direction of the second shell 2. In this embodiment, the second unlocking direction is a vertical downward direction.

[0079] In some embodiments, Figure 8 and Fig.21 As shown, the second locking portion 22 can be separated from the first housing 11 in response to the third unlocking force F3, and can be locked back to the first housing 11 when the third unlocking force F3 is removed; the direction of the third unlocking force F3 is perpendicular to the first unlocking direction, and the direction of the third unlocking force F3 is perpendicular to the protruding direction of the protruding portion 221. Figure 8 is a bottom view of the second housing 2, wherein the protrusion 221 is indicated by a dotted line; Fig.21 is a cross-sectional view of a human body sensing device 100 using the present battery installation structure. In the present embodiment, the second shell 2 is disc-shaped, and the direction of the first unlocking force is the rotational direction. In other embodiments, the direction of the first unlocking force may also be a linear direction. In the present embodiment, the direction of the third unlocking force F3 is the radial direction of the second shell 2. The free end of the elastic portion deforms in the radial direction of the second shell 2 in response to the third unlocking force F3. The protrusion 221 moves in the radial direction of the second shell 2. The protrusion 221 is disengaged from the snap-fit ​​groove 113 of the first shell 11. The protrusion 221 loses its limiting effect, and the second locking portion 22 no longer restricts the movement of the second shell 2. When the third unlocking force F3 is removed, the deformation of the elastic arm 222 is restored, the protrusion 221 is snapped into the snap-fit ​​groove 113 again, and the second locking portion 22 restricts the movement of the second shell 2.

[0080] Among them, the second locking part 22 can be unlocked in response to the second unlocking force or the third unlocking force, and can restore the locked state when the second unlocking force or the third unlocking force is withdrawn. The advantage of such a design is that the user needs to apply the first unlocking force at the same time as the second unlocking force or the third unlocking force is applied to unlock the first locking part 21. If they are not applied at the same time, the first locking part 21 cannot be unlocked, which further increases the difficulty of opening the battery compartment and prevents the battery 9 from being pulled out by children.

[0081] Furthermore, if Figure 8 As shown, the third unlocking force is directed from the outside of the second shell 2 to the inside of the second shell 2, and the second shell 2 is provided with an escape space 27 at a position corresponding to the elastic arm 222, and the escape space 27 is used to avoid the elastic arm 222 from moving in the direction of the third unlocking force; further, the elastic arm 222 is integrally formed and extends to the second shell 2, and the escape space 27 is located on a side of the elastic arm 222 facing the center of the second shell 2. Further, the escape space 27 is configured as a gap between the elastic arm 222 and the second shell 2. The direction of the third unlocking force is the third unlocking direction.

[0082] like Figure 4 and Fig.21 As shown, the first shell 11 is provided with a snap-fitting groove 113 adapted to the protrusion 221, wherein the snap-fitting groove 113 is connected to the inner wall of the first shell 11, so that the protrusion 221 can move to the inner side of the first shell 11 in response to the third unlocking force to disengage from the snap-fitting groove 113. The snap-fitting groove 113 is recessed in the inner side of the side wall of the first shell 11, and the protrusion 221 moves toward the inner side of the first shell 11 in response to the third unlocking force F3. When the distance moved by the protrusion 221 is greater than the thickness of the snap-fitting groove 113, the protrusion 221 is staggered with the snap-fitting groove 113 in the thickness direction, and the protrusion 221 disengages from the snap-fitting groove 113. The snap-fitting groove 113 is connected to the inner wall of the first shell 11 to ensure that the protrusion 221 can move toward the inner side of the first shell 11. It is worth mentioning that the advantage of the protrusion 221 moving toward the inner side of the first shell 11 to disengage from the locking groove 113 is that the user can pinch the second shell 2 while pressing the toggle handle 223 to apply the first unlocking force, that is, the third unlocking force and the first unlocking force can be applied simultaneously with one hand, thereby improving the operational convenience.

[0083] It is worth noting that the second unlocking force and the third unlocking force can independently drive the second locking portion 22 to detach from the first shell 11 without interfering with each other. In some embodiments, the second locking portion 22 can only detach from the first shell 11 in response to the second unlocking force; in other embodiments, the second locking portion 22 can only detach from the first shell 11 in response to the third unlocking force; in still other embodiments, the second locking portion 22 can detach from the first shell 11 in response to both the second unlocking force and the third unlocking force.

[0084] Furthermore, if Figure 1-Figure 9 As shown, the elastic arm 222 is arranged at the edge of the second shell 2, and the free end of the elastic arm 222 is provided with a toggle handle 223, which protrudes laterally from the elastic arm 222, so that the user can toggle the toggle handle 223 downward or press the toggle handle 223 inward, so that the second unlocking force or the third unlocking force is applied to the second locking portion 22 through the toggle handle 223.

[0085] In the embodiment of the present invention, Figure 6 As shown in the right figure, the protrusion 221 includes a snap-in protrusion 2211, and the first shell 11 is provided with a snap-in groove 113 adapted to the snap-in protrusion 2211. When the second shell 2 is applied with the first unlocking force, the side wall of the snap-in groove 113 abuts against the snap-in protrusion 2211 to generate a first abutting force F1; the extension direction of the elastic arm 222 is the same as the first unlocking direction, and the snap-in protrusion 2211 generates the first torque T1 based on the first abutting force F1 with the connecting end as the fulcrum. The elastic arm 222 is a cantilever beam structure, the right end of which is the connection end, and the left end is the free end. The present invention utilizes the structural characteristics of the elastic arm 222 to make the extension direction of the elastic arm 222 the same as the first unlocking direction, so that the direction of the first abutting force F1 is opposite to the first unlocking direction, so that the protruding height of the clamping protrusion 2211 is equivalent to the force arm of the first abutting force F1, and the first abutting force F1 generates a first torque T1 relative to the fulcrum (i.e., the connection end), and the direction of the first torque T1 is clockwise. Thus, the direction of the first torque T1 is consistent with the protruding direction of the clamping protrusion 2211, and the clamping protrusion 2211 can be more deeply clamped to the first housing 11 under the action of the first torque T1, preventing the clamping protrusion 2211 from coming out.

[0086] Furthermore, if Figure 6As shown in the right figure, the protruding direction of the protrusion 221 is perpendicular to the extending direction of the elastic arm 222, so that the protruding direction of the protrusion 221 is tangent to the first torque T1, and then the deformation direction of the elastic arm 222 is consistent with the protruding direction of the protrusion 221, thereby improving the anti-slip performance of the second locking portion 22.

[0087] Furthermore, if Figure 6 As shown in the right figure, the first shell 11 is provided with a pre-slot 114 on the side of the snap-in groove 113 facing the first unlocking direction, and a partition rib is provided between the pre-slot 114 and the snap-in groove 113. The side of the pre-slot 114 close to the snap-in groove 113 is an inclined surface 115. In the process of the first locking part 21 being locked to the first shell 11, the snap-in protrusion 2211 is lifted up by the inclined surface 115 at the position of the pre-slot 114 and then jumps into the snap-in groove 113. Specifically, in the process of the first locking part 21 being locked to the first shell 11, the rotating buckle 211 is first placed in the buckle entrance 112. At this time, the buckle protrusion 2211 is located in the pre-slot 114. In the process of the rotating buckle 211 rotating from the buckle entrance 112 to the rotating buckle groove 111, the buckle protrusion 2211 moves from the pre-slot 114 to the buckle groove 113. Since the slope of the inclined surface 115 is relatively gentle, the buckle protrusion 2211 is lifted up by the inclined surface 115 during the movement, and then automatically snaps into the buckle groove 113. There is no need to move the buckle protrusion 2211 by hand, and the installation of the second shell 2 is simpler and more convenient.

[0088] Furthermore, if Figure 6 As shown, the locking protrusion 2211 is configured as a trapezoidal protrusion, and the locking groove 113 is configured as a trapezoidal groove adapted to the locking protrusion 2211 . The locking protrusion 2211 includes a first limiting surface and a second limiting surface, wherein the first limiting surface is a surface of the locking protrusion 2211 facing the first unlocking direction, and the second limiting surface is a surface of the locking protrusion 2211 facing away from the first unlocking direction; wherein, taking the direction of the second shell 2 toward the first shell 11 as the fourth direction, the inclination angle of the first limiting surface relative to the fourth direction is less than 15°, so that the first limiting surface is close to a vertical state, and the first abutting force F1 is prevented from generating a vertical downward component force, which causes the locking protrusion 2211 to be squeezed out of the locking groove 113; the inclination angle of the second limiting surface relative to the fourth direction is greater than 20°, so that the slope of the second limiting surface is gentler, the locking protrusion 2211 is more easily lifted by the inclined surface 115, and the locking protrusion 2211 can smoothly jump from the pre-locking groove 114 into the locking groove 113. wherein, the first limiting surface is Figure 6The left side of the middle clamping protrusion 2211, the second limiting surface is Figure 6 The right side surface of the middle clamping protrusion 2211, the first limiting surface and the second limiting surface are not marked in the figure.

[0089] In the embodiment of the present invention, Figure 5-Figure 7 As shown, the second housing 2 is detachably connected to the first housing 11 through the first locking portion 21, and when the second locking portion 22 is separated from the first housing 11, the second housing 2 moves toward the first unlocking direction in response to the first unlocking force, so that the first locking portion 21 is unlocked, and the first housing 11 and the second housing 2 are separated from each other, thereby opening the battery compartment.

[0090] Furthermore, if Figure 3 As shown, the first locking portion 21 is constructed as a plurality of rotating buckles 211 distributed along the circumference of the second shell 2, and the rotating buckles 211 are rotatably engaged with the first shell 11, wherein the rotating buckles 211 can be understood as buckles that achieve engagement through rotational motion; the first unlocking direction is the circumferential direction of the second shell 2; the second unlocking direction is parallel to the axial direction of the second shell 2. The circumferential direction can be understood as the direction surrounding the side of the second shell 2, and when the second shell 2 is cylindrical, the circumferential direction is the circumferential direction. Figure 5 It can be seen that the second unlocking direction is parallel to the thickness direction of the second shell 2, and the circumferential direction of the second shell 2 does not intersect with the thickness direction. This embodiment uses the characteristic that the circumferential direction does not intersect with the thickness direction to make the second unlocking direction not intersect with the first unlocking direction, making it difficult for the user to apply the first unlocking force and the second unlocking force simultaneously with only one hand, further increasing the difficulty of opening the battery compartment and preventing the battery 9 from being pulled out by children. In addition, the first unlocking direction is a rotational motion direction, and the second unlocking direction is a linear motion direction. The two motion types are different, further increasing the difficulty of opening the battery compartment.

[0091] It is worth noting that Figure 8 It can be seen that the third unlocking direction is radial, the first unlocking direction intersects with the third unlocking direction, and the user can apply the third unlocking force by pressing the toggle handle 223 and apply the first unlocking force by holding the second shell 2. The user can apply the first unlocking force and the third unlocking force at the same time with only one hand. Figure 5As shown, the second unlocking direction does not intersect with the first unlocking direction, and the user needs to use both hands to apply the first unlocking force and the second unlocking force respectively to open the second shell 2, which greatly increases the difficulty of opening the battery compartment. In actual operation, the user can first hold the first shell 11 with the left hand, and at the same time, the nail of the left thumb presses the second locking portion 22 in the second unlocking direction and applies the second unlocking force, so that the second locking portion 22 is disengaged from the first shell 11. Then, the user can hold the second shell 2 with the right hand and rotate it in the first unlocking direction, so that the first locking portion 21 is unlocked, and then the second shell 2 can be disengaged from the first shell 11 in the second unlocking direction, and the battery compartment is opened.

[0092] Furthermore, if Figure 4 and Figure 7 As shown, the first shell 11 is constructed in a cylindrical shape, the second shell 2 is constructed in a disc shape, the second shell 2 is covered on the end of the first shell 11, and the end of the first shell 11 is provided with a clamping groove 113 adapted to the clamping protrusion 2211; the inner wall of the first shell 11 is provided with a rotating clamping groove 111 adapted to the rotating buckle 211, and the first shell 11 is provided with a clamping entrance 112 at one end of the rotating clamping groove 111, the clamping entrance 112 is opened from the rotating clamping groove 111 to the end of the first shell 11, and the rotating buckle 211 is rotated and clamped into the rotating clamping groove 111 through the clamping entrance 112. Furthermore, the side wall of the second shell 2 is protruding outward to provide four rotating buckles 211, and the four rotating buckles 211 are evenly distributed along the circumference of the second shell 2; the inner wall of the first shell 11 is evenly distributed along the circumference to provide four rotating clamping grooves 111, and the rotating clamping grooves 111 extend along the circumference of the first shell 11, and the end of the rotating clamping groove 111 facing the first unlocking direction is provided with the clamping entrance 112.

[0093] like Figure 4 and Figure 7 As shown, a middle shell 12 is provided inside the first shell 11, and a battery receiving groove 121 is provided on the middle shell 12 toward the second shell 2, and the battery 9 is limited in the battery receiving groove 121. In a specific embodiment, the size of the battery receiving groove 121 is adapted to the outer diameter of the battery 9, and the side of the battery 9 is limited by the battery receiving groove 121. A foam 26 is pasted on the side of the first shell 11 facing the battery 9, and the first shell 11 abuts against the battery 9 through the foam 26 to limit the battery 9 in the battery receiving groove 121. At the same time, the use of the foam 26 abutting against the battery 9 can prevent the battery 9 from shaking up and down, and ensure good contact between the battery 9 and the negative spring 452.

[0094] Furthermore, if Figure 3 and Figure 7As shown, the second shell 2 is provided with an abutting wall 23 extending upwardly from a circumference near the edge, and the rotating buckle 211 is arranged around the outside of the abutting wall 23. When the second shell 2 is covered on the first shell 11, the abutting wall 23 is embedded in the first shell 11. The middle shell 12 is provided with a locking bone 122 extending toward the second shell 2, and the locking bone 122 is provided with a locking recess. The inner side of the abutting wall 23 is provided with a locking edge 231 at a position corresponding to the locking recess. When the second shell 2 is rotated and locked to the first shell 11, the locking edge 231 is locked into the locking recess to increase the locking force of the rotating buckle 211.

[0095] Furthermore, if Fig.21 As shown, a sealing ring 3 is provided at the intersection of the abutting wall 23, the first shell 11 and the middle shell 12. When the second shell 2 is installed on the first shell 11, the sealing ring 3 is squeezed by the abutting wall 23 to seal the first shell 11 and the second shell 2. In addition, since the sealing ring 3 is squeezed by the abutting wall 23, the friction force of the rotational movement of the second shell 2 becomes larger, which increases the force required to open the battery compartment.

[0096] like Figure 1-10 as well as Figure 16-Figure 22 As shown, the first embodiment also provides a human body sensing device 100, such as Fig.16 The figure shows an exploded view of a human body sensing device 100, which includes the above-mentioned battery installation structure and also includes: a sensor module for sensing the human body; a battery 9, which is arranged in the battery accommodating cavity; and the sensor module is powered by the battery 9. The battery installation structure is applied to the human body sensing device 100, so that the human body sensing device 100 can be powered by the battery 9, and has the advantages of small size, no wiring, more flexible installation position, and convenient installation. In addition, the battery installation structure can increase the difficulty of opening the battery compartment of the human body sensing device 100, prevent the battery 9 from being taken out by children, and prevent the battery 9 from accidentally falling off.

[0097] Furthermore, if Figure 16-Figure 22As shown, the human body sensing device 100 also includes a first circuit board 4, which is arranged inside the first shell 11; an end cover 6, which is covered at one end of the first shell 11 away from the battery receiving slot 121; a second circuit board 5, which is mounted on a side of the first circuit board 4 facing the end cover 6; wherein the sensing module includes a pyroelectric sensor 41 and a radar sensing module 51, the pyroelectric sensor 41 is arranged on a side of the first circuit board 4 facing the end cover 6, and the pyroelectric sensor 41 can be triggered in response to the irradiation of infrared light; the end cover 6 is provided with a lens component 7, and the lens component 7 is used to converge infrared light on the pyroelectric sensor 41; the radar sensing module 51 is arranged on the second circuit board 5, and the radar sensing module 51 generates a radar detection wave, and the radar detection wave is emitted to the outside through the end cover 6.

[0098] Among them, Fig. 20 As shown, the pyroelectric sensor 41 can produce a level change in response to the irradiation of infrared light, and the infrared light can be focused on the pyroelectric sensor 41 with the lens 7, which can improve the sensitivity of the pyroelectric sensor 41. The movement of the human body can focus a moving infrared spot on the pyroelectric sensor 41, and then the pin of the pyroelectric sensor 41 produces a level change. The first circuit board 4 is provided with a processing module 42, and the processing module 42 determines whether there is a person in the target area according to the level change of the pyroelectric sensor 41. The pyroelectric sensor 41 is suitable for detecting human activities, which can be understood as movement or limb movement, such as walking, waving arms, sitting down, etc.; when the human body is stationary or the movement amplitude is very small, the pyroelectric sensor 41 will not be able to detect the human body. The radar sensing module 51 can detect the micro-movement of the human body, which can be understood as the tiny movement of the human body in a stationary state, such as breathing, heartbeat, etc. Therefore, the radar sensing module 51 can not only detect the moving human body, but also detect the stationary human body.

[0099] The human body sensing device 100 provided in this embodiment combines the radar sensing module 51 and the pyroelectric sensor 41 to achieve dual sensing of human activities and micro-movements. The pyroelectric sensor 41 has the advantage of low power consumption. When there is no one in the target area, only the pyroelectric sensor 41 can be relied on for detection, which greatly reduces the power consumption of the human body sensing device 100, so that the human body sensing device 100 can be powered by the battery 9. When there is someone in the target area, it switches to the radar sensing mode for detection to avoid the situation where the human body cannot be detected when it is stationary, which perfectly combines the advantages of the radar sensing module 51 and the pyroelectric sensor 41.

[0100] like Fig.17As shown, the second circuit board 5 is mounted on the first circuit board 4, which can save space for the first circuit board 4, reduce the area of ​​the first circuit board 4, and thus reduce the diameter of the first shell 11, but the height of the first shell 11 will increase. In this embodiment, one of the first circuit board 4 and the second circuit board 5 is provided with a pin header 52, and the other is provided with a female header 43, and the pin header 52 is inserted into the female header 43 to achieve electrical connection between the first circuit board 4 and the second circuit board 5; wherein, the second circuit board 5 is mounted on the first circuit board 4 by the pin header 52 and the female header 43, and the pin header 52 and the female header 43 support and position the second circuit board 5. Among them, compared with other connection methods, the connection method of the pin header 52 and the female header 43 is adopted between the two circuit boards of this embodiment, which not only realizes the electrical connection between the circuit boards, but also simplifies the support and positioning structure, so as to facilitate assembly, maintenance and replacement.

[0101] like Fig. 22 As shown, the first shell 11 is constructed as a cylindrical structure with two ends open, the middle shell 12 is arranged below the first circuit board 4, and three limiting bones 123 are arranged upward near the side edge of the middle shell 12, and the three limiting bones 123 are evenly distributed along the circumference of the middle shell 12, and the first circuit board 4 is provided with a positioning portion 44 at a corresponding position of each limiting bone 123, and a limiting groove 116 is arranged on the inner side of the side wall of the first shell 11 at a corresponding position of each limiting bone 123, and the width of the limiting groove 116 is adapted to the limiting bone 123 and the positioning portion 44, and the limiting bone 123 abuts against the lower surface of the positioning portion 44 upward, and the positioning portion 44 is pushed into the limiting groove 116, and the positioning portion 44 is clamped and fixed between the limiting bone 123 and the limiting groove 116. Among them, the positioning portion 44 is formed by dividing the first circuit board 4. Four connecting buckles 124 are evenly distributed along the circumferential direction on the side surface of the middle shell 12, and connecting grooves 117 are provided on the inner side of the side wall of the first shell 11 at positions corresponding to each connecting buckle 124, and the connecting buckles 124 are snapped into the connecting grooves 117 to achieve fixed connection between the middle shell 12 and the first shell 11.

[0102] The battery 9 is arranged below the middle shell 12 , and the first circuit board 4 is downwardly provided with a positive spring piece 451 and a negative spring piece 452 , the positive spring piece 451 passes through the middle shell 12 and abuts against the side of the battery 9 , and the negative spring piece 452 passes through the middle shell 12 and abuts against the top surface of the battery 9 .

[0103] like Fig.19As shown, the first shell 11 has a first open end and a second open end, the end cover 6 is covered on the first open end and is sealed to the first open end, the second open end is provided with the second shell 2, and the sealing ring 3 is provided between the second shell 2 and the first shell 11, so that a closed space is formed inside the first shell 11, so that the sensing device has waterproof performance and can be used in a humid environment. Further, the edge of the end cover 6 is provided with an embedded ring 61 protruding toward the first shell 11, the first open end is recessed inward to form an annular groove 118, the inner side of the embedded ring 61 is coated with a sealant, and the embedded ring 61 is embedded in the annular groove 118, and the sealant seals the end cover 6 and the first shell 11. The annular groove 118 is provided with a positioning rib 1181, and the embedded ring 61 is provided with a positioning notch 611 adapted to the positioning rib 1181, and the positioning rib 1181 is inserted into the positioning notch 611, so that the end cover 6 and the first shell 11 are positioned.

[0104] Furthermore, if Fig.19 and Fig. 20 As shown, the diameter of the end cap 6 is about 3 times the diameter of the lens member 7. The lens member 7 is arranged at a position off-center of the end cap 6, and the lens member 7 is arranged opposite to the pyroelectric sensor 41. The end cap 6 is provided with a lens mounting hole 62 at a position opposite to the lens member 7. A cylindrical limiting cylinder 621 extends downward from the lens mounting hole 62, and a limiting step is arranged on the inner wall of the limiting cylinder 621. The lens member 7 is constructed as a round cap structure, and a brim extends outward from the bottom of its side wall, and the diameter of the brim is larger than the limiting step; the lens member 7 is embedded in the limiting cylinder 621 upward from the bottom of the end cap 6, and the inner wall of the limiting cylinder 621 is attached to the side wall of the lens member 7, and the brim abuts against the limiting step. The brim and the limiting cylinder 621 are sealed by sealant, and the top surface of the lens member 7 passes through the lens mounting hole 62 and is exposed to the outside. Among them, the separate molding of the lens member 7 and the end cap 6 in this embodiment is conducive to ensuring the injection molding accuracy of the lens member 7, and the lens member 7 can use standard parts to reduce the manufacturing cost.

[0105] like Fig. 20 As shown, a small convex lens array is arranged on the inner side of the top wall of the lens member 7, and each small convex lens has the function of converging light, which not only improves the detection resolution of the pyroelectric sensor 41, but also improves the detection distance, so that a small movement of the human body can also trigger the human body sensor. In other embodiments, the small convex lens array can be replaced by a plurality of Fresnel lenses.

[0106] Furthermore, if Fig.19 and Fig. 20As shown, the end cap 6 is provided with two abutting posts 63 toward the second circuit board 5, and the abutting posts 63 and the limiting cylinder 621 are respectively abutted against the upper surface of the second circuit board 5 to limit the upward movement of the second circuit board 5, so that the second circuit board 5 is stably connected to the first circuit board 4. Since the lower end of the second circuit board 5 is supported by the female header 43, the position of the second circuit board 5 in the vertical direction is stably limited, avoiding changes in the position or angle of the second circuit board 5, and thus the position and detection direction of the radar sensing module 51 are stabilized.

[0107] Furthermore, if Fig.19 As shown, the radar sensing module 51 includes a radar chip 511 and a radar antenna 512 disposed on the left and right sides of the radar chip 511. The radar antenna 512 is electrically connected to the radar chip 511, and the radar antenna 512 is used to transmit and receive radar detection waves. The radar antenna 512 is constructed as a copper sheet and is attached to the upper surface of the second circuit board 5. The radar antenna 512 transmits radar detection waves to the outside and receives the reflected radar detection waves. The radar chip 511 determines whether there is a moving human body or object in the target area based on the Doppler principle. In a specific embodiment, the radar chip 511 uses a radar chip model SGR1101T.

[0108] Furthermore, if Fig. 20 As shown, when the radar detection wave is emitted to the end cap 6, part of the detection wave is back-reflected by the end cap 6, thereby causing adverse effects and weakening the detection performance of the radar sensing module 51. The applicant has found that when the vertical distance L1 between the end cap 6 and the radar antenna 512 satisfies 0.5 times the wavelength λ of the radar detection wave, the impact caused by the back-reflection of the end cap 6 is minimal. Therefore, designing the L1 to be 0.5λ is conducive to improving the detection performance of the radar sensing module 51. Among them, the vertical distance between the end cap 6 and the radar antenna 512 can be understood as the distance between the end cap 6 and the radar antenna 512 at the position directly above the radar antenna 512. In a specific embodiment, the frequency of the radar detection wave is 24GHz, its wavelength λ=12.5mm, and the L1 is designed to be 6.25mm.

[0109] Furthermore, if Fig. 20As shown, since the second circuit board 5 is mounted on the first circuit board 4, and the distance between the radar antenna 512 and the end cover 6 needs to meet the distance requirement of L1, the distance between the first circuit board 4 and the end cover 6 is relatively large, which leads to a relatively large distance between the lens component 7 and the pyroelectric sensor 41. However, the excessive distance between the lens component 7 and the pyroelectric sensor 41 will affect the sensing angle and sensing sensitivity of the pyroelectric sensor 41. For this reason, in this embodiment, a gasket 46 is provided between the pyroelectric sensor 41 and the first circuit board 4, and the gasket 46 raises the pyroelectric sensor 41 so that the height of the pyroelectric sensor 41 is adapted to that of the lens component 7, thereby ensuring that the sensing angle and sensing sensitivity of the pyroelectric sensor 41 meet the requirements. In a specific embodiment, the distance L2 between the top of the lens component 7 and the upper surface of the pyroelectric sensor 41 is designed to be 6.4 mm, and the height of the gasket 46 is 4 mm.

[0110] Furthermore, if Fig. 20 and Fig.17 As shown, the lens component 7 is connected to the pyroelectric sensor 41 through a support frame 71. The support frame 71 is cylindrical. The lower part of the support frame 71 is sleeved on the outer side of the pyroelectric sensor 41. The inner wall of the support frame 71 is provided with a second positioning step. The second positioning step abuts against the side skirt of the pyroelectric sensor 41 to position the support frame 71 and the pyroelectric sensor 41. A circle of positioning rings is protruding outwards on the side wall of the support frame 71. The lens component 7 is sleeved on the outer side of the support frame 71. The bottom of the lens component 7 abuts against the positioning ring to position the lens component 7 and the support frame 71.

[0111] Furthermore, if Fig.17 and Fig.18 As shown, three electronic components are arranged on one side of the first circuit board 4 facing the end cover 6, and the three electronic components are distributed around the washer 46 to limit the radial position of the washer 46; the pins of the pyroelectric sensor 41 pass through the washer 46 and are welded to the first circuit board 4, and the washer 46 is clamped between the pyroelectric sensor 41 and the first circuit board 4, so that the washer 46 is axially limited. Therefore, there is no need to set a special limiting structure to limit the washer 46, which simplifies the structure and saves space.

[0112] The pyroelectric sensor 41 adopts the HS312 binary pyroelectric infrared sensor of Senba Sensing Technology Co., Ltd. The pins of the pyroelectric sensor 41 include three metal support columns, and the metal support columns can support the pyroelectric sensor 41 while conducting electricity.

[0113] Furthermore, the three electronic components include two LED lamps 471 and a capacitor 472, and the light emitted by the LED lamp 471 is displayed to the outside through the lens part 7. The end cap 6 and the lens part 7 are both made of light-transmitting materials; the second circuit board 5 is provided with a photosensitive unit 53 within the coverage of the end cap 6, and the ambient light is irradiated to the photosensitive unit 53 through the end cap 6. As a result, the first shell 11 does not need to have additional holes or light-transmitting windows to install the LED lamp 471 and the photosensitive unit 53, which simplifies the structure and improves the integrity of the human body sensing device 100. Furthermore, the photosensitive unit 53 is made of a photoresistor, the end cap 6 is made of white PC material, and the lens part 7 is made of white translucent HDPE material.

[0114] It is worth mentioning that the capacitor 472 is only used as a limiter and is not connected to the circuit.

[0115] like Fig.18 As shown, the first circuit board 4 is provided with the processing module 42, the processing module 42 is integrated with a wireless communication module, the wireless communication module is used for external wireless communication, and an onboard antenna 48 is provided on the first circuit board 4, and the onboard antenna 48 is electrically connected to the wireless communication module. Further, the processing module 42 and the onboard antenna 48 are both provided on the upper surface of the first circuit board 4, and the onboard antenna 48 is provided at the edge of the first circuit board 4.

[0116] like Fig.21 As shown, an electronic switch 49 is provided at the edge of the first circuit board 4, and a trigger rod of the electronic switch 49 protrudes from the first circuit board 4. A key hole is provided on the side wall of the first housing 11 at a position directly opposite to the electronic switch 49, and a silicone key 119 is embedded in the key hole. The silicone key 119 is used to trigger the electronic switch 49. The side wall of the silicone key 119 is recessed inward to form a clamping ring, and the clamping ring is clamped to the key hole so that the silicone key 119 is limited in the key hole. The silicone key 119 is interference-fitted with the key hole to achieve a sealed connection between the silicone key 119 and the first housing 11. It is worth mentioning that the silicone key 119 protrudes from the side of the first housing 11 to facilitate the application of pressing force to the silicone key 119.

[0117] Furthermore, if Fig. 9 , Figure 1 and Figure 2 As shown, the battery installation structure also includes an adjustment member 8 connected to the second shell 2. The adjustment member 8 is used for external installation and can adjust the angle relative to the second shell 2 so that the first shell 11 can follow the angle adjustment of the second shell 2, and then the sensing direction of the human body sensing device 100 can follow the adjustment of the second shell 2.

[0118] Furthermore, if Fig. 9 As shown, a magnetic member 81 is provided at the bottom of the adjustment member 8, and the magnetic member 81 is used for magnetic attraction connection to the external mounting surface, and can be rotated in close contact with the external mounting surface, so that the second shell 2 and the first shell 11 can adjust the angle in two rotational degrees of freedom relative to the external mounting surface, so as to accurately adjust the sensing direction and improve the sensing accuracy and reliability of the human body sensing device 100. In one embodiment, the two rotational degrees of freedom are already Figure 2 The external mounting surface can be understood as the surface of an iron object in the environment, such as a refrigerator surface, an iron rack surface, an iron door surface, etc. In a preferred embodiment, Fig. 9 As shown, the external mounting surface is set to the surface of a circular iron sheet 82, and the circular iron sheet 82 can be pasted on the surface of a non-ferrous object, so that the human body sensing device 100 can be connected to the non-ferrous object through the circular iron sheet 82, further improving the installation flexibility and convenience of the human body sensing device 100. The non-ferrous objects are, for example, glass, wooden cabinets, tables and chairs, walls, etc.

[0119] Furthermore, if Figure 2 As shown, the adjustment member 8 is pivotally connected to the edge of the second shell 2 so that the adjustment member 8 can amplify the rotational torque applied to the second shell 2. According to the principle of lever, the farther the force application part is from the rotation center, the longer the lever arm is, and the greater the torque generated by the same driving force. In this embodiment, the adjustment member 8 is connected to the edge of the second shell 2 so that the length of the lever arm is maximized and the rotational torque is amplified. Furthermore, the adjustment member 8 can be used as an operating handle of the second shell 2, making it easier for the user to apply the operating force to the second shell 2.

[0120] It is worth mentioning that the adjusting member 8 is pivotally connected to the edge of the second shell 2, so that the adjusting member 8 can pivot at a larger angle relative to the second shell 2, thereby increasing the adjustment range of the sensing direction.

[0121] like Fig.10 and Figure 2 As shown, a connecting portion 24 is provided at the bottom edge of the second shell 2, and the connecting portion 24 protrudes from the bottom of the second shell 2; an embedding opening 83 is provided at a position corresponding to the connecting portion 24 of the adjusting member 8, and the connecting portion 24 is embedded in the embedding opening 83. When the second shell 2 pivots relative to the adjusting member 8, the connecting portion 24 rotates in the embedding opening 83; wherein, the connecting portion 24 is tightly embedded in the embedding opening 83, thereby ensuring the connection stability between the second shell 2 and the adjusting member 8 and reducing the angle change caused by accidental vibration.

[0122] Furthermore, if Fig.10 As shown, the connecting portion 24 is transversely penetrated with a through hole 24, and the left and right sides of the embedding opening 83 are respectively provided with second countersunk holes 84, the second countersunk holes 84 are directly opposite to the through hole 24, and a pivot screw 841 is arranged in the second countersunk hole 84, the pivot screw 841 is connected to the through hole 24, and the second housing 2 is pivotally connected to the adjusting member 8 based on the pivot screw 841. Among them, the two second countersunk holes 84 are respectively connected to the connecting portion 24 by the pivot screw 841, ensuring the stable connection between the second housing 2 and the adjusting member 8. In addition, if the pivot resistance between the second housing 2 and the adjusting member 8 is too large, the operation feel will be poor, and if the pivot resistance is too small, the angle between the second housing 2 and the adjusting member 8 will change under the action of gravity. In this embodiment, the friction between the connecting portion 24 and the embedding opening 83 is adjusted by adjusting the tightening force of the pivot screw 841, so as to achieve the purpose of adjusting the pivot resistance between the second housing 2 and the adjusting member 8.

[0123] The lower surface of the adjusting member 8 is recessed upward to provide a magnet mounting groove 85, the shape of which is adapted to the magnetic member 81, the magnetic member 81 is embedded in the magnet mounting groove 85 from bottom to top, and the upper surface of the magnetic member 81 is adhered to the magnet mounting groove 85; the depth of the magnet mounting groove 85 is slightly smaller than the height of the magnetic member 81, so that the bottom of the magnetic member 81 slightly protrudes from the magnet mounting groove 85, so that the lower surface of the magnetic member 81 can fit the external mounting surface.

[0124] like Fig.11 and Fig.12 As shown, it is a second embodiment of the present invention, which is different from the first embodiment in that the first housing 11 is provided with a first clamping portion 125 and a second clamping portion 126, the battery 9 is limited by the first clamping portion 125 and the second clamping portion 126, the first clamping portion 125 and the second clamping portion 126 are both elastic, and the first clamping portion 125 and the second clamping portion 126 simultaneously respond to the unlocking force to release the battery 9. Since the first clamping portion 125 and the second clamping portion 126 need to be operated at the same time to release the battery 9, it is difficult for a child to remove the battery 9 even if the second housing 2 is opened, thereby preventing the battery 9 from being swallowed by a child. Therefore, in this embodiment, the second housing 2 is no longer provided with the second locking portion 22, and accordingly, the first housing 11 is no longer provided with the clamping groove 113 and the pre-clamping groove 114, so as to simplify the structure of the second housing 2 and the first housing 11. In addition, since the battery 9 of this embodiment is stably confined in the battery receiving groove 121, there is no risk of the battery 9 becoming loose. Therefore, the foam 26 is no longer provided in this embodiment.

[0125] The first clamping portion 125 and the second clamping portion 126 are both elastic, and the unlocking force needs to be continuously applied to maintain the unlocking state, so that the purpose of releasing the battery 9 by applying the unlocking force at the same time is achieved. The first clamping portion 125 and the second clamping portion 126 can be springs, elastic buckles or other elastic limiting structures.

[0126] Furthermore, if Fig.12 As shown, the first housing 11 is provided with the first circuit board 4, and the first clamping portion 125 is configured as a conductive spring, which is connected to the first circuit board 4, that is, the conductive spring can both connect the battery 9 to the first circuit board 4 and play a limiting role. The middle housing 12 does not need to be provided with an additional clamping structure, which simplifies the structure. The structure of the conductive spring provided in this embodiment is the same as that of the positive electrode spring 451 in the first embodiment. Fig.17 As shown, the upper end of the positive spring sheet 451 is welded to the first circuit board 4, and the lower end extends downward and bends toward the battery 9 at a certain arc, and the lower end of the positive spring sheet 451 abuts against the lower edge of the battery 9, thereby limiting the battery 9. The structure of the first circuit board 4 of this embodiment is the same as that of the first embodiment, and will not be repeated here.

[0127] Furthermore, if Fig.12 As shown, the second clamping portion 126 is configured as an elastic clamping portion, which extends from the first housing 11; the angle between the unlocking direction of the second clamping portion 126 and the unlocking direction of the first clamping portion 125 is greater than 60°, so that the user needs to use both hands to apply the unlocking force to the first clamping portion 125 and the second clamping portion 126 at the same time, which increases the difficulty of operation and prevents the battery 9 from being pulled out by children. In this embodiment, the angle between the unlocking direction of the second clamping portion 126 and the unlocking direction of the first clamping portion 125 is 90°. The elastic clamping portion can be understood as a clamping portion that can be elastically deformed in response to the unlocking force to unlock, and restores the deformation to restore the lock when the unlocking force is removed.

[0128] Furthermore, if Fig.12 As shown, the first housing 11 is also provided with a rigid buckle 127. The rigid buckle 127, the first clamping portion 125 and the second clamping portion 126 jointly limit the battery 9, further increasing the difficulty of pulling out the battery 9 and preventing the battery 9 from being pulled out by children. The rigid buckle 127 is not necessarily absolutely rigid. The rigid buckle 127 can be understood as a buckle that is not easily deformed in normal operation. Furthermore, the rigid buckle 127 is arranged opposite to the first clamping portion 125 to enhance the clamping performance of the first clamping portion 125 and prevent the battery 9 from falling.

[0129] Furthermore, the second clamping portion 126 and the rigid buckle 127 are integrally formed on the middle shell 12 .

[0130] Furthermore, other structures of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0131] In the third embodiment of the present invention (not shown in the figure), the only difference between the third embodiment and the second embodiment is that the second shell 2 is provided with the second locking portion 22, and the first shell 11 is provided with the snap-in groove 113 and the pre-slot 114, wherein the technical details of the second locking portion 22, the snap-in groove 113 and the pre-slot 114 are described in detail in the first embodiment and will not be repeated here. This embodiment combines the second locking portion 22 of the first embodiment with the first snap-in portion 125, the second snap-in portion 126 and the rigid buckle 127 of the second embodiment, making the step of removing the battery 9 more complicated, and preventing children from removing the battery 9. Furthermore, the other structures of this embodiment are the same as those of the second embodiment and will not be repeated here.

[0132] In the fourth embodiment of the present invention, Fig.13 As shown, the difference between this embodiment and the first embodiment is that a threaded connection hole 128 is provided on one side of the middle shell 12 facing the second shell 2, and the threaded connection hole 128 is arranged at a position off-center of the middle shell 12, and a first countersunk hole 25 is provided on the second shell 2 at a position directly opposite to the threaded connection hole 128, and a connecting screw 251 passes through the first countersunk hole 25 and is locked in the threaded connection hole 128, so that the second shell 2 is restricted from moving toward the first unlocking direction by the connecting screw 251 to restrict the unlocking of the first locking portion 21. The nut of the connecting screw 251 is sunk into the first countersunk hole 25. In this embodiment, the second shell 2 is no longer provided with the second locking portion 22, and accordingly, the first shell 11 is no longer provided with the snap-fit ​​groove 113 and the pre-slot 114.

[0133] Furthermore, the torque required to loosen the connecting screw 251 is greater than 0.5 N·m.

[0134] Furthermore, if Fig.13 As shown, the second shell 2 is connected to the middle shell 12 via two connecting screws 251 , and the two connecting screws 251 are distributed at 180° near the edge of the second shell 2 .

[0135] Furthermore, other structures of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0136] In the fifth embodiment of the present invention, Fig.14 and Fig.15As shown, the difference between this embodiment and the first embodiment is that a battery limiting plate 120 is provided at the opening of the battery receiving groove 121, and the battery limiting plate 120 is arranged between the middle shell 12 and the second shell 2, and the battery limiting plate 120 abuts against the battery 9 to limit the battery 9 in the battery receiving groove 121. Among them, two cantilever buckles 1201 extend from one side of the battery limiting plate 120 facing the middle shell 12, and the two cantilever buckles 1201 are distributed at the edge of the battery limiting plate 120 at 180°, and the hook directions of the two cantilever buckles 1201 are opposite. The side of the middle shell 12 facing the battery limiting plate 120 is respectively provided with arc grooves 129 at the corresponding positions of the two cantilever buckles 1201, and the cantilever buckle 1201 is inserted into the first end of the arc groove 129 and is rotatably engaged with the arc groove 129. A screwdriver operation port 1202 is provided on one side of the battery limiting plate 120 facing the second shell 2 , and a user can insert a screwdriver into the screwdriver operation port 1202 to rotate the battery limiting plate 120 so that the battery limiting plate 120 is locked / unlocked to the middle shell 12 .

[0137] Furthermore, the curvature of the arc groove 129 is greater than 90°, and the rotation stroke of the cantilever buckle 1201 in the arc groove 129 is greater than or equal to 90°, so that the battery limiting plate 120 needs to rotate at least 90° to switch the locked / unlocked state.

[0138] like Fig.15 As shown, it is a schematic diagram of the disassembly process of the battery limiting plate 120. The user needs to insert a screwdriver into the screwdriver operation port 1202 and rotate it counterclockwise to rotate the cantilever buckle 1201 to the first end of the arc groove 129, and then uncover the battery limiting plate 120. Since a screwdriver is required during the operation, the battery limiting plate 120 can be prevented from being opened by children, thereby preventing the battery 9 from being pulled out by children.

[0139] Furthermore, the torque required for the user to rotate the battery limiting plate 120 using a screwdriver is greater than 0.5 N·m.

[0140] Furthermore, an avoidance gap 1203 is provided on one side of the battery limiting plate 120 facing the negative electrode spring piece 452 . During the rotation of the battery limiting plate 120 , the negative electrode spring piece 452 is always located in the avoidance gap 1203 , thereby preventing the negative electrode spring piece 452 from interfering with the rotational movement of the battery limiting plate 120 .

[0141] In this embodiment, the second housing 2 is no longer provided with the second locking portion 22, and accordingly, the first housing 11 is no longer provided with the snap-fit ​​groove 113 and the pre-slot 114. In addition, since the battery 9 of this embodiment is limited by the battery limiting plate 120, there is no risk of loosening, and therefore, the foam 26 is no longer provided in this embodiment. Furthermore, since the locking bone 122 will interfere with the rotational movement of the battery limiting plate 120, the middle shell 12 of this embodiment is not provided with the locking bone 122, and accordingly, the second housing 2 is not provided with the locking edge 231.

[0142] Furthermore, other structures of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0143] According to the second aspect of this embodiment, Figure 1-Figure 22 As shown, a human body sensing device 100 is provided, namely the human body sensing device 100 provided in the above embodiments 1 to 5. The technical details of the human body sensing device 100 have been described in detail in the above embodiments 1 to 5, and will not be repeated here.

[0144] It should also be noted that the above-mentioned embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments, that is, the technical solutions disclosed in the later (order of sequence recorded in the text) embodiments should include the technical solutions recorded in the embodiment and the technical solutions recorded in all embodiments before the embodiment.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery installation structure, characterized in that: The battery housing comprises a first housing and a second housing, wherein the second housing is covered on the first housing to form a battery accommodating cavity, and the battery accommodating cavity is used to accommodate a battery; Wherein, the second housing is provided with a first locking portion and a second locking portion, the second housing is locked to the first housing via the first locking portion, and the unlocking direction of the first locking portion is set as a first unlocking direction; The second locking portion includes an elastic arm, the elastic arm has a connecting end connected to the second shell and a free end extending from the connecting end, the free end is provided with a protrusion, and the protrusion is clamped on the first shell to limit the second shell from moving toward the first unlocking direction; The elastic arm is configured such that when a first unlocking force in the first unlocking direction is applied to the second housing, the protruding portion generates a first torque based on the first unlocking force, and a direction of the first torque is consistent with a protruding direction of the protruding portion.

2. The battery installation structure according to claim 1, characterized in that: The second locking portion can be separated from the first housing in response to a second unlocking force, and can be restored to be locked to the first housing when the second unlocking force is removed; the direction of the second unlocking force is opposite to the protruding direction of the protruding portion; and / or, The second locking portion can be disengaged from the first shell in response to a third unlocking force, and can be restored to be locked to the first shell when the third unlocking force is withdrawn; the direction of the third unlocking force is perpendicular to the first unlocking direction, and the direction of the third unlocking force is perpendicular to the protruding direction of the protruding portion.

3. The battery installation structure according to claim 2, characterized in that: When the second locking portion is capable of being disengaged from the first housing in response to the third unlocking force; The third unlocking force is directed from the outside of the second shell to the inside of the second shell, and the second shell is provided with an escape space at a position corresponding to the elastic arm, and the escape space is used to prevent the elastic arm from moving in the direction of the third unlocking force; The first shell is provided with a snap-in groove adapted to the protrusion, wherein the snap-in groove is connected to the inner wall of the first shell, so that the protrusion can move to the inner side of the first shell in response to the third unlocking force to disengage from the snap-in groove.

4. The battery installation structure according to claim 2, characterized in that: When the second locking portion is disengaged from the first shell, the second shell moves toward the first unlocking direction in response to the first unlocking force, so that the first locking portion is unlocked, and the first shell and the second shell are disengaged from each other.

5. The battery installation structure according to claim 2, characterized in that: The elastic arm is arranged at the edge of the second shell, and the free end of the elastic arm is provided with a toggle handle, and the toggle handle protrudes laterally from the elastic arm.

6. The battery installation structure according to claim 1, characterized in that: The protruding portion includes a snap-on protrusion, and the first shell is provided with a snap-on groove adapted to the snap-on protrusion. When the first unlocking force is applied to the second shell, the side wall of the snap-on groove abuts against the snap-on protrusion to generate a first abutting force; the extension direction of the elastic arm is in the same direction as the first unlocking direction, and the snap-on protrusion generates the first torque based on the first abutting force with the connecting end as the fulcrum.

7. The battery installation structure according to claim 6, characterized in that: The first shell is provided with a pre-slot on the side of the snap-in groove facing the first unlocking direction, and a partition rib is provided between the pre-slot and the snap-in groove. The side of the pre-slot close to the snap-in groove is an inclined surface. When the first locking part is locked to the first shell, the snap-in protrusion is lifted up by the inclined surface at the position of the pre-slot and then jumps into the snap-in groove.

8. The battery installation structure according to claim 7, characterized in that: The snap-fitting protrusion includes a first limiting surface and a second limiting surface, the first limiting surface is a side of the snap-fitting protrusion facing the first unlocking direction, and the second limiting surface is a side of the snap-fitting protrusion facing away from the first unlocking direction; wherein, taking the direction of the second shell toward the first shell as the fourth direction, the inclination angle of the first limiting surface relative to the fourth direction is less than 15°, and the inclination angle of the second limiting surface relative to the fourth direction is greater than 20°.

9. The battery installation structure according to any one of claims 1 to 8, characterized in that: The first locking portion is constructed as a plurality of rotating buckles distributed along the circumference of the second shell, the rotating buckles are rotationally engaged with the first shell, and the first unlocking direction is the circumference of the second shell.

10. The battery installation structure according to claim 9, characterized in that: The first shell is cylindrical, the second shell is disc-shaped, the second shell cover is arranged at the end of the first shell, the end of the first shell is provided with a clamping groove adapted to the clamping protrusion; the inner wall of the first shell is provided with a rotating clamping groove adapted to the rotating buckle, the first shell is provided with a clamping inlet at one end of the rotating clamping groove, the clamping inlet is opened from the rotating clamping groove to the end of the first shell, and the rotating buckle is rotated and clamped into the rotating clamping groove from the clamping inlet; A middle shell is arranged inside the first shell, and a battery receiving groove is arranged in the middle shell toward the second shell, and the battery is confined in the battery receiving groove.

11. The battery installation structure according to claim 9, characterized in that: It also includes an adjustment member connected to the second shell, the adjustment member is used for external installation and can adjust the angle relative to the second shell; The adjusting member is pivotally connected to an edge of the second shell so that the adjusting member can amplify the rotational torque applied to the second shell.

12. A human body sensing device, comprising the battery mounting structure according to any one of claims 1 to 11, characterized in that: Also includes: A sensor module for sensing the human body; A battery, disposed in the battery accommodating cavity; The sensor module is powered by the battery.

13. The human body sensing device according to claim 12, characterized in that: Also includes: A first circuit board is disposed inside the first housing; an end cover, disposed on an end of the first shell away from the second shell; A second circuit board is mounted on a side of the first circuit board facing the end cover; The sensing module includes a pyroelectric sensor and a radar sensing module. The pyroelectric sensor is arranged on a side of the first circuit board facing the end cover, and the pyroelectric sensor can be triggered in response to the irradiation of infrared light. The end cover is provided with a lens component, and the lens component is used to focus the infrared light on the pyroelectric sensor. The radar sensing module is arranged on the second circuit board, and the radar sensing module generates a radar detection wave, and the radar detection wave is emitted to the outside through the end cover. A gasket is provided between the pyroelectric sensor and the first circuit board, and the gasket is used to raise the position of the pyroelectric sensor; The first circuit board is provided with three electronic components on one side facing the end cover, and the three electronic components are distributed around the gasket to limit the gasket radially; the pins of the pyroelectric sensor pass through the gasket and are welded to the first circuit board, and the gasket is clamped between the pyroelectric sensor and the first circuit board so that the gasket is axially limited; The three electronic components include two LED lamps and a capacitor, and the light emitted by the LED lamps is displayed to the outside through the lens component.

Images