Battery mounting structure and human body induction device

Abstract

The utility model provides a battery installation structure which comprises a first shell and a second shell, the first shell is provided with a battery containing groove, and the battery containing groove is constructed to be capable of containing a button battery; the second shell is detachably connected to the first shell, and the second shell is arranged in the battery accommodating groove in a covering manner; wherein the second shell is provided with a first lock catch part and a second lock catch part, the first lock catch part and the second lock catch part are respectively locked on the first shell, the unlocking direction of the first lock catch part is set to be a first unlocking direction, and the unlocking direction of the second lock catch part is set to be a second unlocking direction. The second lock catch part is used for limiting the second shell to move towards the first unlocking direction so as to limit unlocking of the first lock catch part. The battery mounting structure provided by the utility model improves the difficulty of opening the battery compartment, and prevents the button battery from being dug out by children.

Description

Technical Field

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

[0002] With the development of smart home, people's demand for intelligent life is getting higher and higher. To achieve an intelligent home scene, intelligent sensing devices and signal transmitting devices are essential, such as intelligent sensors, wireless switches, etc. These devices all need button batteries for power supply.

[0003] Using button batteries for power supply has the advantages of small size, no need for wiring, more flexible installation position, and convenient installation. However, button battery power supply also has disadvantages: the battery needs to be replaced regularly.

[0004] The existing battery compartment generally uses a rotatable battery cover. After opening the battery cover, the button battery can be dug out. However, this battery compartment is not reliable. The opening method is too simple, and the button battery may be dug out by children. Due to the small size of the button battery, it is easy to be swallowed by children, posing a safety hazard. Summary of the Utility Model

[0005] An object of the utility model is to provide a battery installation structure, in which the button battery is accommodated between the battery accommodation groove and the second housing. The user needs to open the second housing to take out the battery. The second housing is locked to the first housing through the first locking portion and the second locking portion. The user needs to unlock the second locking portion first, so that the second housing can move in the first unlocking direction to unlock the first locking portion. Only when the first locking portion is unlocked can the second housing be opened, which increases the difficulty of opening the battery compartment, avoids the button battery being dug out by children, and eliminates the safety hazard.

[0006] Another object of the utility model is to provide a battery installation structure, in which the user needs to apply the first unlocking force while applying the second unlocking force to unlock the first locking portion, further increasing the difficulty of opening the battery compartment and avoiding the button battery being dug out by children.

[0007] Another object of the utility model is to provide a battery installation structure, in which by using the characteristic that the circumferential direction and the axial direction do not intersect, the second unlocking direction and the first unlocking direction do not intersect, 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 avoiding the button battery being dug out by children.

[0008] Another object of the utility model is to provide a battery installation structure, in which the first unlocking direction is a rotational movement direction and the second unlocking direction is a linear movement direction, and the two movement types are different, further increasing the difficulty of opening the battery compartment.

[0009] Another object of the present utility model is to provide a battery mounting structure, wherein a toggling handle is provided at the end of the elastic arm, and the toggling handle protrudes laterally from the elastic arm, so as to facilitate the user to apply a second unlocking force through the toggling handle.

[0010] Another object of the present utility model is to provide a battery mounting structure, wherein the adjusting member can amplify and apply the rotational torque to the second housing.

[0011] Another object of the present utility model is to provide a battery mounting structure, wherein the first clamping portion and the second clamping portion need to be operated simultaneously to release the limit of the button battery. Even if a child opens the second housing, it is difficult to pick out the button battery, thus avoiding the button battery being swallowed by the child.

[0012] Another object of the present utility model is to provide a battery mounting structure, wherein the conductive elastic sheet can not only conduct the button battery to the first circuit board, but also play a role in limiting. The middle housing does not need to be provided with an additional first clamping portion, thus simplifying the structure.

[0013] Another object of the present utility model is to provide a battery mounting structure, wherein the included angle between the unlocking direction of the second clamping portion and the unlocking direction of the first clamping portion is greater than 60°, so that the user needs to use both hands to apply the unlocking force to the first clamping portion and the second clamping portion simultaneously, increasing the operation difficulty, avoiding the button battery being picked out by the child, and eliminating the safety hazard.

[0014] Another object of the present utility model is to provide a battery mounting structure, wherein the rigid buckle, the first clamping portion and the second clamping portion jointly limit the button battery, further increasing the difficulty of picking out the button battery and avoiding the button battery being picked out by the child.

[0015] Another object of the present utility model is to provide a battery mounting structure, wherein the adjusting member is for external mounting and can adjust the angle relative to the second housing, so that the first housing can follow the second housing to adjust the angle.

[0016] Another object of the present utility model is to provide a human body sensing device, which combines a radar sensing module and a pyroelectric sensor to achieve double sensing of human activities and micro-motions.

[0017] Another object of the present utility model is to provide a human body sensing device, wherein the second circuit board is arranged on the first circuit board, which can save the space of the first circuit board, reduce the area of the first circuit board, and thus reduce the diameter of the housing.

[0018] Another object of the present utility model is to provide a human body sensing device, wherein a washer is provided between the pyroelectric sensor and the first circuit board, and the washer raises the pyroelectric sensor so that the height of the pyroelectric sensor is adapted to that of the lens element, thereby ensuring that the sensing angle and sensing sensitivity of the pyroelectric sensor meet the requirements.

[0019] Another object of the present utility model is to provide a human body sensing device, wherein three electronic components radially limit the washer, and the washer is clamped between the pyroelectric sensor and the first circuit board so that the washer is axially limited, thereby eliminating the need for a dedicated limiting structure to limit the washer, simplifying the structure and saving space.

[0020] To achieve at least one of the above objects, according to a first aspect of the present utility model, there is provided a battery mounting structure, including a first housing and a second housing. The first housing is provided with a battery receiving groove configured to receive a button battery; the second housing is detachably connected to the first housing, and the second housing covers the battery receiving groove.

[0021] Wherein, the second housing is provided with a first locking portion and a second locking portion, the first locking portion and the second locking portion are respectively latched to the first housing, the unlocking direction of the first locking portion is set as a first unlocking direction, and the second locking portion is used to restrict the second housing from moving in the first unlocking direction to restrict the unlocking of the first locking portion; and / or

[0022] The first housing is provided with a first clamping portion and a second clamping portion, the button battery is jointly limited by the first clamping portion and the second clamping portion, both the first clamping portion and the second clamping portion are elastic, and the first clamping portion and the second clamping portion simultaneously respond to an unlocking force to release the limitation on the button battery.

[0023] Further, when the second housing is provided with the first locking portion and the second locking portion, the second locking portion is an elastic member, and the second locking portion can be unlocked in response to a second unlocking force and resume the locked state when the second unlocking force is removed.

[0024] Further, when the second housing is provided with the first locking portion and the second locking portion, the first unlocking direction is the circumferential direction of the second housing, the unlocking direction of the second locking portion is a second unlocking direction, the second unlocking direction is the direction of the first housing towards the second housing, and the second unlocking direction is parallel to the axial direction of the second housing.

[0025] Further, when the second shell is provided with the first locking portion and the second locking portion, the first locking portion is configured as a plurality of rotating buckles distributed along the circumference of the second shell, and the rotating buckles are rotatably engaged with the first shell;

[0026] The second locking portion includes an elastic arm extending from the second housing and a clamping protrusion disposed at the end of the elastic arm, wherein the clamping protrusion is clamped to the first housing in a third direction to limit the second housing from rotating relative to the first housing, and the third direction is opposite to the second unlocking direction;

[0027] The elastic arm can be elastically bent toward the second unlocking direction in response to the second unlocking force, so that the engaging protrusion is disengaged from the first shell.

[0028] Further, when the second shell is provided with the first locking portion and the second locking portion, the first shell includes an outer shell and a middle shell provided inside the outer shell, the second shell cover is provided at an end of the outer shell, and the middle shell is provided with the battery receiving groove toward the second shell;

[0029] The end of the shell is provided with a clamping groove adapted to the clamping protrusion, and the inner wall of the shell is provided with a rotating clamping groove adapted to the rotating buckle;

[0030] The clamping protrusion includes a first inclined surface and a second inclined surface, wherein the first inclined surface is a side of the clamping protrusion facing the first unlocking direction, and the second inclined surface is a side of the clamping protrusion facing away from the first unlocking direction, and the second inclined surface is more gentle than the first inclined surface;

[0031] A pre-slot is provided on one side of the clamping groove facing the first unlocking direction, and a partition rib is provided between the pre-slot and the clamping groove;

[0032] The outer shell is constructed in a cylindrical shape, the second shell is constructed in a pancake shape, the elastic arm is arranged at the edge of the second shell, and the elastic arm extends along the circumference of the second shell. A toggle handle is arranged at the end of the elastic arm, and the toggle handle protrudes laterally from the elastic arm.

[0033] Furthermore, when the second shell is provided with the first locking portion and the second locking portion, the battery mounting structure also includes an adjusting piece connected to the second shell, the adjusting piece is used for external mounting and can adjust the angle relative to the second shell; the adjusting piece is pivotally connected to the edge position of the second shell so that the adjusting piece can amplify the rotational torque applied to the second shell.

[0034] In some embodiments, when the first housing is provided with the first engaging portion and the second engaging portion, a first circuit board is disposed inside the first housing. The first engaging portion is configured as a conductive elastic sheet, and the conductive elastic sheet is connected to the first circuit board.

[0035] Further, when the first housing is provided with the first engaging portion and the second engaging portion, the second engaging portion is configured as an elastic buckle, and the elastic buckle extends from the first housing; the included angle between the unlocking direction of the second engaging portion and the unlocking direction of the first engaging portion is greater than 60°.

[0036] Further, when the first housing is provided with the first engaging portion and the second engaging portion, the first housing is further provided with a rigid buckle, and the rigid buckle, the first engaging portion and the second engaging portion jointly limit the button battery.

[0037] According to a second aspect of the present invention, a human body sensing device is provided, including the above battery installation structure, and further including: a first circuit board disposed inside the first housing; an end cover covering one end of the first housing away from the battery receiving groove; a pyroelectric sensor disposed 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 member for converging infrared light on the pyroelectric sensor; a second circuit board mounted on a side of the first circuit board facing the end cover; a radar sensing module disposed on the second circuit board, and the radar sensing module generates a radar detection wave, and the radar detection wave passes through the end cover and is emitted externally;

[0038] Wherein, a washer is disposed between the pyroelectric sensor and the first circuit board, and the washer raises the pyroelectric sensor so that the height of the pyroelectric sensor is adapted to the height of the lens member;

[0039] Three electronic components are disposed on a side of the first circuit board facing the end cover, and the three electronic components are distributed around the washer to radially limit the washer; the pins of the pyroelectric sensor pass through the washer and are welded to the first circuit board, and the washer is clamped between the pyroelectric sensor and the first circuit board so that the washer is axially limited;

[0040] The three electronic components include two LED lights and a capacitor, and the light emitted by the LED lights is externally displayed through the lens member.

[0041] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present utility model. The above-mentioned contents of each utility model can be combined arbitrarily, and these and other purposes of the present utility model will be fully embodied by the following detailed description and the accompanying drawings.

[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 utility model. Brief Description of the Drawings

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0044] Figure 1 is a schematic structural diagram of the human body sensing device according to the first embodiment of the present utility model;

[0045] Figure 2 is a schematic structural diagram of the second housing, the first locking portion and the second locking portion according to the first embodiment of the present utility model;

[0046] Figure 3 is a three-dimensional sectional view of the human body sensing device according to the first embodiment of the present utility model;

[0047] Figure 4 is Figure 3 an enlarged view of part C in

[0048] Figure 5 is a schematic structural diagram of the outer shell and the middle shell according to the first embodiment of the present utility model;

[0049] Figure 6 is a schematic connection diagram of the first housing and the second housing according to the first embodiment of the present utility model;

[0050] Figure 7 is a schematic connection diagram of the magnetic member and the circular iron sheet according to the first embodiment of the present utility model;

[0051] Figure 8 is an assembly schematic diagram of the second housing, the adjusting member and the magnetic attracting member according to the first embodiment of the present utility model;

[0052] Figure 9 is a schematic diagram of the angle change of the second housing relative to the adjusting member according to the first embodiment of the present utility model;

[0053] Figure 10It is a schematic diagram of the connection between the first housing and the second housing of the second embodiment of the present utility model;

[0054] Figure 11 It is a schematic diagram of the connection between the middle housing and the battery of the second embodiment of the present utility model;

[0055] Figure 12 It is a schematic diagram of the connection between the first housing and the second housing of the fourth embodiment of the present utility model;

[0056] Figure 13 It 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 utility model;

[0057] Figure 14 It is a schematic diagram of the disassembly process of the battery limiting plate of the fifth embodiment of the present utility model;

[0058] Figure 15 It is an exploded view of the human body sensing device of the first embodiment of the present utility model;

[0059] Figure 16 It is an exploded view of a partial structure of the human body sensing device of the first embodiment of the present utility model;

[0060] Figure 17 It is a schematic diagram of the structure of the first circuit board of the first embodiment of the present utility model;

[0061] Figure 18 It is a schematic diagram of the connection between the end cover, the second circuit board, the lens member and the outer shell of the first embodiment of the present utility model;

[0062] Figure 19 It is a cross-sectional view of the end cover, the lens member, the first circuit board, the second circuit board and the electronic components of the first embodiment of the present utility model;

[0063] Figure 20 It is a cross-sectional view of the human body sensing device of the first embodiment of the present utility model;

[0064] Figure 21 It is an exploded view of a partial structure of the human body sensing device after the outer shell is cut open in the first embodiment of the present utility model. Detailed implementation manners

[0065] In the description of the present utility model, the orientation or positional relationship indicated by the terms "inner", "outer", "horizontal", "vertical", "upper", "lower", "top", "bottom", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and does not require the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0066] In the description of the specification of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0067] In the description of the specification of the present utility model, unless otherwise clearly defined and limited, terms such as "connection" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0068] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0069] The existing battery compartment generally uses a battery cover that opens by rotation. After opening the battery cover, the button battery can be taken out. However, this kind of battery compartment is not reliable, the opening method is too simple, and the button battery may be taken out by children. Since the button battery is small in size and easy to be swallowed by children, there are safety hazards.

[0070] To solve the problem of safety hazards existing in the existing battery compartment, according to the first aspect of the present utility model, a battery installation structure is provided. Please refer to Figures 1 - 21 , and the battery installation structure provided by the present utility model will be specifically explained. Figures 1 - 9 And Figures 15 - 21 is the first embodiment of the present utility model, as shown in Figures 1 - 6As shown, the battery mounting structure includes a first housing 1 and a second housing 2. The first housing 1 is provided with a battery receiving groove 121 which is configured to receive a button battery 9. The second housing 2 is detachably connected to the first housing 1 and covers the battery receiving groove 121. Among them, the second housing 2 is provided with a first locking portion 21 and a second locking portion 22. The first locking portion 21 and the second locking portion 22 are respectively latched to the first housing 1. The unlocking direction of the first locking portion 21 is set as the first unlocking direction, and the second locking portion 22 is used to restrict the second housing 2 from moving in the first unlocking direction to restrict the unlocking of the first locking portion 21. Among them, the first housing 1 can be understood as a combination of one housing or multiple housings. The second housing 2 covers the battery receiving groove 121 to form a battery compartment between the second housing 2 and the battery receiving groove 121. The battery compartment can be understood as a cavity for accommodating the button battery 9. The latching can be understood as a connection method that can switch between the locked and unlocked states. When the first locking portion 21 is locked to the first housing 1, the second housing 2 is closely connected to the first housing 1. When the first locking portion 21 is unlocked from the first housing 1, the second housing 2 is disconnected from the first housing 1. In some exemplary embodiments, the first locking portion 21 can be a rotary buckle, a thread, a chute and other structures, and the first unlocking direction can be a linear direction or a rotary direction. The second locking portion 22 also has two states of locking and unlocking. When the second locking portion 22 is locked to the first housing 1, the second locking portion 22 will restrict the second housing 2 from moving in the first unlocking direction. When the second locking portion 22 is in the unlocked state, the second locking portion 22 no longer restricts the movement of the second housing 2. In an exemplary embodiment, the second locking portion 22 can be a buckle, a bolt, etc.

[0071] In the embodiment of the present invention, the button battery 9 is accommodated between the battery receiving groove 121 and the second housing 2. The user needs to open the second housing 2 to take out the battery. The second housing 2 is latched to the first housing 1 through the first locking portion 21 and the second locking portion 22. The user needs to unlock the second locking portion 22 first so that the second housing 2 can move in the first unlocking direction to unlock the first locking portion 21. Only when the first locking portion 21 is unlocked can the second housing 2 be opened, which increases the difficulty of opening the battery compartment, avoids the button battery 9 from being dug out by children, and eliminates potential safety hazards.

[0072] It should be noted that the battery mounting structure provided by the present invention is applicable to a variety of electronic products, such as intelligent sensors, wireless switches, intelligent temperature and humidity meters, etc. The embodiments of the present invention are only described in detail by taking 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.

[0073] Further, as Figures 2 - 4 shown, the second latching portion 22 is an elastic member. The second latching portion 22 can be unlocked in response to a second unlocking force and resume the locked state when the second unlocking force is removed, so that the user needs to apply the first unlocking force while applying the second unlocking force to unlock the first latching portion 21, further increasing the difficulty of opening the battery compartment and preventing the button battery 9 from being taken out by children. Wherein, the first unlocking force can be understood as the force for unlocking the first latching portion 21, and the second unlocking force can be understood as the force for unlocking the second latching portion 22. When the second unlocking force acts on the second latching portion 22, the second latching portion 22 undergoes elastic deformation and unlocks. When the second unlocking force is removed, the elastic deformation of the second latching portion 22 is restored, and the second latching portion 22 resumes the locked state with the first housing 1.

[0074] Further, as Figures 2 - 5 shown, the first unlocking direction is the circumferential direction of the second housing 2, the unlocking direction of the second latching portion 22 is the second unlocking direction, the second unlocking direction is the direction from the first housing 1 towards the second housing 2, and the second unlocking direction is parallel to the axial direction of the second housing 2. Among them, the first unlocking direction and the second unlocking direction have been marked in Figure 2 . The circumferential direction can be understood as the direction surrounding the side surface of the second housing 2. When the second housing 2 is cylindrical, the circumferential direction is the circumferential direction. It can be seen from Figure 2 that the circumferential direction of the second housing 2 does not intersect with the axial direction. In this embodiment, the characteristic that the circumferential direction does not intersect with the axial direction is utilized 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 button battery 9 from being taken out by children. In addition, the first unlocking direction is a rotational movement direction, and the second unlocking direction is a linear movement direction. The different types of movement further increase the difficulty of opening the battery compartment.

[0075] It should be noted that, compared with the embodiment where the first unlocking direction intersects the second unlocking direction (for example, the first unlocking direction is circumferential, the second unlocking direction is radial, and the user can apply the second unlocking force through a pressing operation and apply the first unlocking force through a holding and rotating operation), the intersection of the first unlocking direction and the second unlocking direction enables the user to apply the first unlocking force and the second unlocking force simultaneously with only one hand, and the difficulty of opening the battery compartment is relatively low. In this embodiment, the second unlocking direction does not intersect the first unlocking direction, and the user needs to apply the first unlocking force and the second unlocking force with both hands respectively to open the second housing 2, which greatly increases the difficulty of opening the battery compartment. During the actual operation, the user can first hold the first housing 1 with the left hand, and at the same time, use the nail of the left thumb to press against the second locking portion 22 in the second unlocking direction and apply the second unlocking force, so that the second locking portion 22 is disengaged from the first housing 1. At this time, the second locking portion 22 is unlocked. The user can hold the second housing 2 with the right hand and rotate it in the first unlocking direction to unlock the first locking portion 21. Then, the second housing 2 can be separated from the first housing 1 in the second unlocking direction, and the battery compartment is opened.

[0076] Further, as Figure 6 shown, the first locking portion 21 is configured as a plurality of rotating latches 211 circumferentially distributed along the second housing 2, and the rotating latches 211 are rotatably latched with the first housing 1; wherein, the rotating latches 211 can be understood as latches that achieve latching through rotational movement. In a specific embodiment, as Figure 6 and Figure 5 shown, the first housing 1 includes an outer shell 11 and a middle shell 12 disposed inside the outer shell 11. The outer shell 11 is configured to be similar to a cylindrical shape, the outer shell 11 has a second open end, the second housing 2 is disposed at the second open end, the second housing 2 is configured to be similar to a round cake shape, and the rotating latches 211 are protruded outward from the side wall of the second housing 2. There are 4 rotating latching grooves 111 circumferentially and uniformly distributed on the inner wall of the outer shell 11. The rotating latching grooves 111 extend along the circumferential direction of the outer shell 11. One end of the rotating latching groove 111 is provided with a latching inlet 112, the latching inlet 112 is opened to the second open end, and the direction of the rotating latching groove 111 towards the latching inlet 112 is the same as the first unlocking direction. The rotating latches 211 are rotatably latched into the rotating latching grooves 111 from the latching inlet 112.

[0077] Further, as Figure 2 and Figure 6As shown, a butting wall 23 is provided on the second housing 2 and extends upward around the edge thereof. When the second housing 2 is covered on the outer housing 11, the butting wall 23 is embedded in the outer housing 11, and the rotary buckle 211 is arranged on the outer side of the butting wall 23. A positioning rib 122 is provided on the middle housing 12 and extends toward the second housing 2. The positioning rib 122 is provided with a positioning depression, and a positioning ridge 231 is arranged at a position corresponding to the positioning depression on the inner side of the butting wall 23. When the second housing 2 is rotationally clamped to the outer housing 11, the positioning ridge 231 is snapped into the positioning depression to increase the locking force of the rotary buckle 211, further increasing the difficulty of opening the battery compartment and preventing children from opening the battery compartment.

[0078] Further, as Figure 20 shown, a sealing ring 3 is arranged at the intersection of the butting wall 23, the outer housing 11 and the middle housing 12. When the second housing 2 is installed on the outer housing 11, the sealing ring 3 is squeezed by the butting wall 23 to seal between the outer housing 11 and the second housing 2. In addition, since the sealing ring 3 is squeezed by the butting wall 23, the frictional force of the rotational movement of the second housing 2 becomes larger, further increasing the difficulty of opening the battery compartment.

[0079] Further, as Figure 2 and Figure 3 shown, the second locking portion 22 includes an elastic arm 222 extending from the second housing 2 and a clamping protrusion 221 arranged at the end of the elastic arm 222. The clamping protrusion 221 is clamped to the first housing 1 in the third direction to limit the rotation of the second housing 2 relative to the first housing 1, and the third direction is opposite to the second unlocking direction; the elastic arm 222 can be elastically bent toward the second unlocking direction in response to the second unlocking force so that the clamping protrusion 221 is disengaged from the first housing 1. Wherein, the elastic arm 222 can increase the elastic deformation amount of the second locking portion 22 and prevent the second locking portion 22 from being damaged.

[0080] As Figure 4As shown, a side of the housing 11 facing the second housing 2 is provided with a snap-in groove 113 adapted to the snap-in protrusion 221, the snap-in protrusion 221 is configured as a trapezoidal protrusion, and the snap-in groove 113 is configured as a trapezoidal groove adapted to the snap-in protrusion 221. The snap-in protrusion 221 includes a first inclined surface and a second inclined surface, the first inclined surface is a side of the snap-in protrusion 221 facing the first unlocking direction, the second inclined surface is a side of the snap-in protrusion 221 away from the first unlocking direction, and the second inclined surface is relatively gentle, so that the snap-in protrusion 221 does not need to be manually moved during the snap-in process of snapping into the snap-in groove 113, and can be automatically snap-in as the second housing 2 rotates. The first inclined surface is relatively steep, so that the snap-in protrusion 221 is difficult to be separated from the snap-in groove 113 without applying a second unlocking force, so that the second locking portion 22 can stably limit the rotation of the second housing 2.

[0081] Furthermore, if Figure 4 and Figure 5 As shown, a pre-slot 114 is provided on one side of the snap-in groove 113 facing the first unlocking direction, and a partition rib 115 is provided between the pre-slot 114 and the snap-in groove 113. When the rotating buckle 211 enters the snap-in entrance 112, the snap-in protrusion 221 enters the pre-slot 114. During the rotation of the rotating buckle 211 from the snap-in entrance 112 to the rotating snap-in groove 111, the snap-in protrusion 221 rotates from the pre-slot 114 to the snap-in groove 113, and the snap-in protrusion 221 is limited by the partition rib 115. The side of the pre-slot 114 that faces away from the first unlocking direction is a third inclined surface, and the third inclined surface is relatively gentle, so that the snap-in protrusion 221 can be automatically inserted into the snap-in groove 113 from the pre-slot 114 during the rotation process without manually moving the snap-in protrusion 221.

[0082] Furthermore, if Figure 9 and Figure 1 As shown, the second shell 2 is constructed to be similar to a pie shape, the elastic arm 222 is arranged at the edge of the second shell 2, and the elastic arm 222 extends along the circumference of the second shell 2, and a toggle handle 223 is provided at the end of the elastic arm 222, and the toggle handle 223 protrudes laterally from the elastic arm 222, so that the user can apply a second unlocking force by toggling the toggle handle 223.

[0083] Furthermore, if Figure 5 and Figure 6 As shown, the first housing 1 includes an outer shell 11 and a middle shell 12 disposed inside the outer shell 11, the second housing 2 is covered at the end of the outer shell 11, and the middle shell 12 is provided with the battery receiving slot 121 toward the second housing 2.Figure 20 As shown, the button cell 9 is disposed between the middle case 12 and the second housing 2. A foam 26 is pasted on one side of the second housing 2 facing the button cell 9. The foam 26 abuts against the button cell 9 to prevent the button cell 9 from shaking up and down, ensuring good contact between the button cell 9 and the negative electrode elastic piece 452. A battery accommodation groove 121 is recessed upward on the lower side of the middle case 12. The shape of the battery accommodation groove 121 is adapted to the button cell 9, and the button cell 9 is limited by the battery accommodation groove 121.

[0084] As Figures 1 - 9 and Figures 15 - 21 shown, the first embodiment further provides a human body sensing device 100. As Figure 15 shown is an exploded view of the human body sensing device 100. The human body sensing device 100 includes the above battery installation structure and further includes: a first circuit board 4 disposed inside the first housing 1; an end cover 6 covering one end of the first housing 1 away from the battery accommodation groove 121; a pyroelectric sensor 41 disposed on one 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 member 7, and the lens member 7 is used to converge infrared light on the pyroelectric sensor 41; a second circuit board 5 is mounted on one side of the first circuit board 4 facing the end cover 6; a radar sensing module 51 is disposed on the second circuit board 5, and the radar sensing module 51 generates radar detection waves, and the radar detection waves pass through the end cover 6 and are emitted outward.

[0085] Among them, as Figure 19 shown, the pyroelectric sensor 41 can generate a level change in response to the irradiation of infrared light. Cooperating with the lens member 7 to converge infrared light on the pyroelectric sensor 41 can improve the sensing sensitivity of the pyroelectric sensor 41. The movement of a human body can converge a moving infrared light spot on the pyroelectric sensor 41, and then the pins of the pyroelectric sensor 41 generate a level change. A processing module 42 is disposed on the first circuit board 4, 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 the activities of a human body, and the activities of the human body can be understood as movement or limb movement, such as walking, waving an arm, sitting down, etc.; when the human body is stationary or the movement amplitude is very small, the pyroelectric sensor 41 will fail to detect the human body. The radar sensing module 51 can detect the micro-movement of a human body, and the micro-movement can be understood as the tiny movement generated by a human body in a stationary state, such as breathing, heartbeat, etc. Therefore, the radar sensing module 51 can not only detect a moving human body, but also detect a stationary human body.

[0086] The human body sensing device 100 provided in this embodiment combines a radar sensing module 51 and a pyroelectric sensor 41, achieving dual sensing of human activities and micro-motions. The pyroelectric sensor 41 has the advantage of low power consumption. When there is no one in the target area, it can rely solely on the pyroelectric sensor 41 for detection, greatly reducing the power consumption of the human body sensing device 100, enabling the human body sensing device 100 to be powered by a button battery 9. When there is someone in the target area, it switches to the radar sensing mode for detection, avoiding the situation where detection fails when the human body is stationary, and perfectly combining the advantages of the radar sensing module 51 and the pyroelectric sensor 41.

[0087] As Figure 16 shown, the second circuit board 5 is mounted on the first circuit board 4, which can save the space of the first circuit board 4, reduce the area of the first circuit board 4, and thus reduce the diameter of the outer shell 11. However, the height of the outer shell 11 will increase. In this embodiment, one of the first circuit board 4 and the second circuit board 5 is provided with pin headers 52, and the other is provided with female headers 43. The pin headers 52 are inserted into the female headers 43 to realize the electrical connection between the first circuit board 4 and the second circuit board 5. Among them, the second circuit board 5 is mounted on the first circuit board 4 by the pin headers 52 and the female headers 43, and the pin headers 52 and the female headers 43 support and position the second circuit board 5. Among them, compared with other connection methods, the connection method of using pin headers 52 and female headers 43 between the two circuit boards in this embodiment not only realizes the electrical connection between the circuit boards, but also simplifies the support and positioning structure, facilitating assembly, maintenance, and replacement.

[0088] As Figure 21 shown, the outer shell 11 is constructed as a cylindrical-like structure with both ends open. The middle shell 12 is arranged below the first circuit board 4. Three limiting ribs 123 are arranged upward at a position near the side edge of the middle shell 12. The three limiting ribs 123 are evenly distributed along the circumference of the middle shell 12. The first circuit board 4 is provided with positioning parts 44 at positions corresponding to the respective limiting ribs 123. Limiting grooves 116 are arranged on the inner side of the side wall of the outer shell 11 at positions corresponding to the respective limiting ribs 123. The width of the limiting grooves 116 is adapted to the limiting ribs 123 and the positioning parts 44. The limiting ribs 123 abut upward against the lower surface of the positioning parts 44 and push the positioning parts 44 into the limiting grooves 116. The positioning parts 44 are clamped and fixed between the limiting ribs 123 and the limiting grooves 116. Among them, the positioning parts 44 are formed by dividing the first circuit board 4. Four connecting buckles 124 are evenly distributed along the circumference of the side surface of the middle shell 12. Connecting grooves 117 are arranged on the inner side of the side wall of the outer shell 11 at positions corresponding to the respective connecting buckles 124. The connecting buckles 124 are snapped into the connecting grooves 117 to realize the fixed connection between the middle shell 12 and the outer shell 11.

[0089] The button cell 9 is disposed below the middle case 12. The first circuit board 4 is provided with a positive electrode elastic sheet 451 and a negative electrode elastic sheet 452 downward. The positive electrode elastic sheet 451 passes through the middle case 12 and abuts against the side surface of the button cell 9, and the negative electrode elastic sheet 452 passes through the middle case 12 and abuts against the top surface of the button cell 9.

[0090] As Figure 18 shown, the outer 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 hermetically connected to the first open end. The second housing 2 is provided at the second open end. A sealing ring 3 is provided between the second housing 2 and the outer shell 11, so as to form a closed space inside the outer shell 11, so that the induction device has waterproof performance and can be applied to a humid environment. Further, a protruding embedding ring 61 is provided around the edge of the end cover 6 towards the outer shell 11. An annular groove 118 is formed by inward depression of the first open end. A sealing glue is applied to the inner circumference of the embedding ring 61. The embedding ring 61 is embedded in the annular groove 118, and the sealing glue seals the end cover 6 and the outer shell 11. A positioning rib 1181 is provided in the annular groove 118, and the embedding ring 61 is provided with a positioning notch 611 adapted to the positioning rib 1181. The positioning rib 1181 is inserted into the positioning notch 611 to position the end cover 6 and the outer shell 11.

[0091] Further, as Figure 18 and Figure 19 shown, the diameter of the end cover 6 is about three times the diameter of the lens member 7. The lens member 7 is disposed at an eccentric position of the end cover 6, and the lens member 7 is disposed opposite to the pyroelectric sensor 41. A lens mounting hole 62 is provided through the end cover 6 at a position opposite to the lens member 7. The lens mounting hole 62 extends downward to form a cylindrical limiting cylinder 621, and a limiting step is provided on the inner wall of the limiting cylinder 621. The lens member 7 is configured as a round cap structure, and a brim extends outward from the bottom of its side wall. The diameter of the brim is larger than the limiting step. The lens member 7 is inserted into the limiting cylinder 621 from below the end cover 6. The inner wall of the limiting cylinder 621 fits against the side wall of the lens member 7. The brim abuts against the limiting step, and the brim and the limiting cylinder 621 are sealed by a sealing glue. 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 cover 6 in this embodiment is beneficial to ensuring the injection molding accuracy of the lens member 7, and the lens member 7 can be selected as a standard part to reduce the manufacturing cost.

[0092] As Figure 19 shown, a small convex lens array is provided on the inner side of the top wall of the lens member 7. 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 small movements 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.

[0093] Furthermore, as shown in Figure 18 and Figure 19 , two abutting posts 63 are provided on the end cover 6 facing the second circuit board 5. The abutting posts 63 and the limiting cylinder 621 respectively abut 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, preventing the position or angle of the second circuit board 5 from changing. Furthermore, the position and detection direction of the radar sensing module 51 are stabilized.

[0094] Furthermore, as shown in Figure 18 , the radar sensing module 51 includes a radar chip 511 and radar antennas 512 arranged on the left and right sides of the radar chip 511. The radar antennas 512 are electrically connected to the radar chip 511, and the radar antennas 512 are used to transmit and receive radar detection waves. The radar antennas 512 are configured as copper foils and are attached to the upper surface of the second circuit board 5. The radar antennas 512 emit radar detection waves and receive the radar detection waves reflected back. 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 with the model SGR1101T.

[0095] Furthermore, as shown in Figure 19 , when the radar detection wave is transmitted to the end cover 6, part of the detection wave is reflected backward by the end cover 6, which has an adverse effect and weakens the detection performance of the radar sensing module 51. The applicant found that when the vertical distance L1 between the end cover 6 and the radar antenna 512 satisfies 0.5 times the wavelength λ of the radar detection wave, the influence caused by the backward reflection of the end cover 6 is the smallest. Therefore, designing the L1 as 0.5λ is beneficial to improving the detection performance of the radar sensing module 51. Among them, the vertical distance between the end cover 6 and the radar antenna 512 can be understood as the distance between the position directly above the radar antenna 512 of the end cover 6 and the radar antenna 512. In a specific embodiment, the frequency of the radar detection wave is 24 GHz, its wavelength λ = 12.5 mm, and the L1 is designed as 6.25 mm.

[0096] Furthermore, as shown in Figure 19As shown, since the second circuit board 5 is mounted on the first circuit board 4, and the distance requirement of L1 needs to be satisfied between the radar antenna 512 and the end cover 6, the distance between the first circuit board 4 and the end cover 6 is large, which in turn leads to a large distance between the lens member 7 and the pyroelectric sensor 41. However, too large a distance between the lens member 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 washer 46 is provided between the pyroelectric sensor 41 and the first circuit board 4, and the washer 46 raises the pyroelectric sensor 41 so that the height of the pyroelectric sensor 41 is adapted to that of the lens member 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 end of the lens member 7 and the upper surface of the pyroelectric sensor 41 is designed to be 6.4 mm, and the height of the washer is 4 mm.

[0097] Furthermore, as Figure 19 and Figure 16 shown, the lens member 7 and the pyroelectric sensor 41 are connected by a support frame 71. The support frame 71 is configured as a cylindrical shape. The lower part of the support frame 71 is sleeved on the outside of the pyroelectric sensor 41. A second positioning step is provided on the inner wall of the support frame 71, and the second positioning step abuts against the side skirt of the pyroelectric sensor 41 so that the support frame 71 and the pyroelectric sensor 41 are positioned. A positioning ring protrudes outward from the side wall of the support frame 71. The lens member 7 is sleeved on the outside of the support frame 71, and the bottom of the lens member 7 abuts against the positioning ring so that the lens member 7 and the support frame 71 are positioned.

[0098] Furthermore, as Figure 16 and Figure 17 shown, three electronic components are provided on the side of the first circuit board 4 facing the end cover 6. The three electronic components are distributed around the washer 46 to radially limit 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. Thus, there is no need to specially provide a limiting structure to limit the washer 46, which simplifies the structure and saves space.

[0099] The pyroelectric sensor 41 uses the HS312 dual-element 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.

[0100] Further, the three electronic components include two LED lights 471 and a capacitor 472. The light emitted by the LED lights 471 is externally displayed through the lens member 7. Both the end cap 6 and the lens member 7 are made of light-transmitting materials. A photosensitive unit 53 is provided on the second circuit board 5 within the coverage of the end cap 6, and ambient light passes through the end cap 6 and irradiates the photosensitive unit 53. This enables the housing 11 to install the LED lights 471 and the photosensitive unit 53 without additional openings or light-transmitting windows, simplifies the structure, and improves the integrity of the human body sensing device 100. At the same time, there is no need to design an additional waterproof structure, reducing the manufacturing cost and improving the assembly efficiency. Further, the photosensitive unit 53 uses a photosensitive resistor, the end cap 6 is made of white PC material, and the lens member 7 is made of white translucent HDPE material.

[0101] It is worth mentioning that the capacitor 472 is only used as a limiting member and is not connected to the circuit.

[0102] As Figure 17 shown, the first circuit board 4 is provided with the processing module 42. The processing module 42 integrates a wireless communication module for external wireless communication. An on-board antenna 48 is provided on the first circuit board 4, and the on-board antenna 48 is electrically connected to the wireless communication module. Further, both the processing module 42 and the on-board antenna 48 are provided on the upper surface of the first circuit board 4, and the on-board antenna 48 is provided at the edge position of the first circuit board 4.

[0103] As Figure 20 shown, an electronic switch 49 is provided at the edge of the first circuit board 4. The trigger rod of the electronic switch 49 protrudes from the first circuit board 4. A key hole is provided in the side wall of the housing 11 at the position 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. A clamping ring is formed by the inward depression of the side wall of the silicone key 119, and the clamping ring is clamped in the key hole so that the silicone key 119 is limited in the key hole. The silicone key 119 is in interference fit with the key hole to achieve a sealed connection between the silicone key 119 and the housing 11. It is worth mentioning that the silicone key 119 protrudes from the side of the housing 11 to facilitate the application of pressing force on the silicone key 119.

[0104] Further, as Figures 7 - 9 shown, the battery mounting structure further includes an adjusting member 8 connected to the second housing 2. The adjusting member 8 is used for external mounting and can adjust the angle relative to the second housing 2 so that the first housing 1 can follow the second housing 2 to adjust the angle, and further the sensing direction of the human body sensing device 100 can follow the second housing 2 to adjust.

[0105] Further, as Figure 7 shown, a magnetic member 81 is provided at the bottom of the adjusting member 8. The magnetic member 81 is used for magnetically attracting and connecting to an external mounting surface, and can rotate while adhering to the external mounting surface, so that the second housing 2 and the first housing 1 can adjust the angle with respect to the external mounting surface in two rotational degrees of freedom, facilitating the accurate adjustment of the sensing direction and improving the sensing accuracy and reliability of the human body sensing device 100. In an embodiment, the two rotational degrees of freedom are marked in Figure 9 . Among them, the external mounting surface can be understood as the surface of a ferrous object in the environment, such as the surface of a refrigerator, an iron rack, an iron door, etc. In a preferred embodiment, as Figure 7 shown, the external mounting surface is set as 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 include, for example, glass, wooden cabinets, desks and chairs, walls, etc.

[0106] Further, as Figure 9 shown, the adjusting member 8 is pivotally connected to the edge position of the second housing 2, so that the adjusting member 8 can apply the rotational torque amplifiedly to the second housing 2. Among them, according to the lever principle, the farther the force application part is from the rotation center, the longer the force arm is, and the greater the torque generated by the same driving force is. In this embodiment, the adjusting member 8 is connected to the edge position of the second housing 2, maximizing the force arm length and amplifying the rotational torque. Further, the adjusting member 8 can be used as an operation handle of the second housing 2, making it easier for the user to apply the operating force to the second housing 2.

[0107] It is worth mentioning that the adjusting member 8 is pivotally connected to the edge position of the second housing 2, so that the adjustable pivot angle of the adjusting member 8 relative to the second housing 2 is larger, thereby increasing the adjustment range of the sensing direction.

[0108] As Figure 8 and Figure 9 shown, a connecting portion 24 is provided at the bottom edge position of the second housing 2, and the connecting portion 24 protrudes from the bottom of the second housing 2; a fitting opening 83 is provided at the corresponding position of the adjusting member 8 for the connecting portion 24, and the connecting portion 24 is fitted into the fitting opening 83. When the second housing 2 pivots relative to the adjusting member 8, the connecting portion 24 rotates within the fitting opening 83; among them, the connecting portion 24 is tightly fitted into the fitting opening 83, ensuring the connection stability between the second housing 2 and the adjusting member 8 and reducing the angle change caused by accidental vibration.

[0109] Further, asFigure 8 As shown, a through hole 241 is transversely formed through the connecting portion 24. Second counter bores 84 are respectively formed on the left and right sides of the insertion opening 83. The second counter bores 84 are opposite to the through hole 241. Pivot screws 841 are arranged in the second counter bores 84. The pivot screws 841 are connected to the through hole 241. The second housing 2 is pivotally connected to the adjusting member 8 based on the pivot screws 841. Wherein, the two second counter bores 84 are respectively connected to the connecting portion 24 through the pivot screws 841, ensuring a firm 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, it will result in a poor operating feel. 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 frictional force between the connecting portion 24 and the insertion opening 83 is adjusted by adjusting the tightening force of the pivot screws 841, so as to achieve the purpose of adjusting the pivot resistance between the second housing 2 and the adjusting member 8.

[0110] A magnet mounting groove 85 is recessed upward on the lower surface of the adjusting member 8. The shape of the magnet mounting groove 85 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 protrudes slightly from the magnet mounting groove 85, so that the lower surface of the magnetic member 81 can fit on the external mounting surface.

[0111] As Figure 10 and Figure 11 As shown, this is the second embodiment of the present invention. The difference from the above first embodiment is that the first housing 1 is provided with a first clamping portion 125 and a second clamping portion 126. The button battery 9 is jointly limited by the first clamping portion 125 and the second clamping portion 126. Both the first clamping portion 125 and the second clamping portion 126 are elastic. The first clamping portion 125 and the second clamping portion 126 simultaneously respond to the unlocking force to release the limit on the button battery 9. Since the first clamping portion 125 and the second clamping portion 126 need to be operated simultaneously to release the limit on the button battery 9, even if a child opens the second housing 2, it is difficult to pick out the button battery 9, avoiding the button battery 9 from being swallowed by the child. Therefore, in this embodiment, the second locking portion 22 is no longer provided on the second housing 2. Correspondingly, the clamping groove 113 and the pre-card slot 114 are no longer provided on the outer shell 11 to simplify the structures of the second housing 2 and the outer shell 11. In addition, since the button battery 9 of this embodiment is stably limited in the battery accommodation groove 121, there is no risk of loosening of the button battery 9. Therefore, the foam 26 is no longer provided in this embodiment.

[0112] Among them, both the first clamping portion 125 and the second clamping portion 126 are elastic, and a continuous unlocking force is required to maintain their unlocked states, so as to achieve the purpose that both need to apply an unlocking force simultaneously to release the limit on the button battery 9. The first clamping portion 125 and the second clamping portion 126 can be elastic pieces, elastic buckles or other elastic limiting structures.

[0113] Further, as Figure 11 shown, a first circuit board 4 is disposed inside the first housing 1. The first clamping portion 125 is configured as a conductive elastic piece, and the conductive elastic piece is connected to the first circuit board 4. That is, the conductive elastic piece can both conduct the button battery 9 to the first circuit board 4 and play a limiting role. There is no need to additionally provide a first clamping portion 125 on the middle housing 12, which simplifies the structure. Among them, the structure of the conductive elastic piece provided in this embodiment is the same as that of the positive electrode elastic piece 451 in the first embodiment. As Figure 16 shown, the upper end of the positive electrode elastic piece 451 is welded to the first circuit board 4, and the lower end extends downward and bends a certain arc toward the button battery 9. The lower end of the positive electrode elastic piece 451 abuts against the lower edge of the button battery 9, thereby limiting the button battery 9. The structure of the first circuit board 4 in this embodiment is the same as that in the first embodiment and will not be described in detail here.

[0114] Further, as Figure 11 shown, the second clamping portion 126 is configured as an elastic buckle, and the elastic buckle extends into the first housing 1; the included 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 simultaneously apply an unlocking force to the first clamping portion 125 and the second clamping portion 126, increasing the operation difficulty, preventing the button battery 9 from being dug out by children, and eliminating potential safety hazards. In this embodiment, the included angle between the unlocking direction of the second clamping portion 126 and the unlocking direction of the first clamping portion 125 is 90°. Among them, the elastic buckle can be understood as a buckle that can respond to an unlocking force to undergo elastic deformation to release the lock and restore the deformation to restore the lock when the unlocking force is removed.

[0115] Further, as Figure 11 shown, the first housing 1 is further provided with a rigid buckle 127. The rigid buckle 127, the first clamping portion 125 and the second clamping portion 126 jointly limit the button battery 9, further increasing the difficulty of digging out the button battery 9 and preventing the button battery 9 from being dug out by children. Among them, the rigid buckle 127 is not necessarily absolutely rigid. The rigid buckle 127 can be understood as a buckle that is not easily deformed during normal operation. Further, the rigid buckle 127 is disposed opposite to the first clamping portion 125 to enhance the clamping performance of the first clamping portion 125 and prevent the button battery 9 from falling off.

[0116] Further, the second clamping portion 126 and the rigid snap 127 are integrally formed on the middle shell 12.

[0117] Further, the other structures of this embodiment are the same as those of the first embodiment, and will not be described herein again.

[0118] In the third embodiment of the present utility model (not shown in the figure), the difference between the third embodiment and the second embodiment is only that the second housing 2 is provided with the second locking portion 22, and the outer housing 11 is provided with the clamping groove 113 and the pre-card slot 114. Among them, the technical details of the second locking portion 22, the clamping groove 113 and the pre-card slot 114 are described in detail in the first embodiment, and will not be described herein again. This embodiment combines the second locking portion 22 of the first embodiment with the first clamping portion 125, the second clamping portion 126 and the rigid snap 127 of the second embodiment, making the steps of removing the button battery 9 more complicated and preventing children from removing the button battery 9. Further, the other structures of this embodiment are the same as those of the second embodiment, and will not be described herein again.

[0119] In the fourth embodiment of the present utility model, as Figure 12 shown, the difference between this embodiment and the first embodiment is that a threaded connection hole 128 is formed on one side of the middle shell 12 facing the second housing 2. The threaded connection hole 128 is arranged at an eccentric position of the middle shell 12. A first counterbore 25 is formed on the second housing 2 at a position corresponding to the threaded connection hole 128. A connecting screw 251 passes through the first counterbore 25 and is locked in the threaded connection hole 128, thereby restricting the second housing 2 from moving in 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 sinks into the first counterbore 25. In this embodiment, the second housing 2 is no longer provided with the second locking portion 22. Correspondingly, the outer housing 11 is no longer provided with the clamping groove 113 and the pre-card slot 114.

[0120] Further, the torque required to loosen the connecting screw 251 is greater than 0.5 N·m.

[0121] Further, as Figure 12 shown, the second housing 2 is connected to the middle shell 12 by two connecting screws 251. The two connecting screws 251 are distributed at 180° at a position near the edge of the second housing 2.

[0122] Further, the other structures of this embodiment are the same as those of the first embodiment, and will not be described herein again.

[0123] In the fifth embodiment of the present utility model, as Figure 13 and Figure 14As 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 button battery 9 to limit the button 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 .

[0124] 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.

[0125] like Figure 14 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 button battery 9 from being pulled out by children.

[0126] Furthermore, the torque required for the user to rotate the battery limiting plate 120 using a screwdriver is greater than 0.5 N·m.

[0127] 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 .

[0128] In this embodiment, the second locking portion 22 is no longer provided on the second housing 2. Correspondingly, the engaging groove 113 and the pre-groove 114 are no longer provided on the outer housing 11. Additionally, since the button battery 9 in this embodiment is limited by the battery limiting plate 120 and there is no risk of loosening, therefore, the foam 26 is no longer provided in this embodiment. Furthermore, since the positioning bone 122 interferes with the rotational movement of the battery limiting plate 120, therefore, the positioning bone 122 is not provided on the middle housing 12 in this embodiment. Correspondingly, the positioning rib 231 is not provided on the second housing 2.

[0129] Furthermore, the other structures of this embodiment are the same as those of the first embodiment and will not be elaborated here.

[0130] According to the second aspect of this embodiment, as Figures 1 - 21 shown, a human body sensing device 100 is provided, that is, the human body sensing device 100 provided in the above-mentioned Embodiments 1 to 5. The human body sensing device 100 includes the battery installation structure provided in the above-mentioned Embodiments 1 to 5, and further includes: a first circuit board 4 disposed inside the first housing 1; an end cover 6 covering one end of the first housing 1 away from the battery accommodation groove 121; a pyroelectric sensor 41 disposed on a surface 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 member 7, and the lens member 7 is used to converge infrared light on the pyroelectric sensor 41; a second circuit board 5 mounted on a surface of the first circuit board 4 facing the end cover 6; a radar sensing module 51 disposed on the second circuit board 5, and the radar sensing module 51 generates radar detection waves, and the radar detection waves are emitted outward through the end cover 6;

[0131] Wherein, a washer 46 is disposed between the pyroelectric sensor 41 and the first circuit board 4, and the washer 46 raises the pyroelectric sensor 41 so that the height of the pyroelectric sensor 41 is adapted to the height of the lens member 7;

[0132] Three electronic components are disposed on a surface of the first circuit board 4 facing the end cover 6, and the three electronic components are distributed around the washer 46 to radially limit the washer 46; the pins of the pyroelectric sensor 41 pass through the washer 46 and are soldered 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;

[0133] The three electronic components include two LED lights 471 and one capacitor 472, and the light emitted by the LED lights 471 is displayed outward through the lens member 7.

[0134] 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.

[0135] In addition, it should be noted that the above embodiments can be combined with each other. For the same or similar concepts or processes, they may not be repeated in some embodiments. That is, the technical solutions disclosed in the subsequent (in the order of recording in the text) embodiments should include the technical solutions recorded in this embodiment and the technical solutions in all the embodiments before this embodiment.

[0136] 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 foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions 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 pack comprises a first shell and a second shell, wherein the first shell is provided with a battery receiving slot, and the battery receiving slot is configured to receive a button battery; the second shell is detachably connected to the first shell, and the second shell cover is provided on the battery receiving slot; Wherein, the second shell is provided with a first locking portion and a second locking portion, the first locking portion and the second locking portion are respectively locked with the first shell, the unlocking direction of the first locking portion is set as a first unlocking direction, and the second locking portion is used to limit the second shell from moving toward the first unlocking direction to limit the unlocking of the first locking portion; and / or, The first shell is provided with a first clamping portion and a second clamping portion, and the button battery is jointly limited by the first clamping portion and the second clamping portion. The first clamping portion and the second clamping portion are both elastic, and the first clamping portion and the second clamping portion simultaneously respond to the unlocking force to release the button battery from the limit.

2. The battery mounting structure according to claim 1, wherein, When the second shell is provided with the first locking portion and the second locking portion, the second locking portion is an elastic component, the second locking portion can be unlocked in response to a second unlocking force, and restores the locked state when the second unlocking force is removed.

3. The battery mounting structure according to claim 2, characterized in that, When the second shell is provided with the first locking portion and the second locking portion, the first unlocking direction is the circumferential direction of the second shell, the unlocking direction of the second locking portion is the second unlocking direction, the second unlocking direction is the direction of the first shell toward the second shell, and the second unlocking direction is parallel to the axial direction of the second shell.

4. The battery mounting structure according to claim 3, wherein When the second housing is provided with the first locking portion and the second locking portion, the first locking portion is configured as a plurality of rotating buckles distributed along the circumference of the second housing, and the rotating buckles are rotatably engaged with the first housing; The second locking portion includes an elastic arm extending from the second shell and a clamping protrusion arranged at the end of the elastic arm, wherein the clamping protrusion is clamped to the first shell in a third direction to limit the second shell from rotating relative to the first shell, and the third direction is opposite to the second unlocking direction; The elastic arm can be elastically bent toward the second unlocking direction in response to the second unlocking force, so that the engaging protrusion is disengaged from the first shell.

5. The battery mounting structure according to claim 4, wherein, When the second housing is provided with the first locking portion and the second locking portion, the first housing comprises an outer shell and a middle shell arranged inside the outer shell, the second housing cover is arranged at an end of the outer shell, and the middle shell is provided with the battery receiving groove toward the second housing; The end of the shell is provided with a clamping groove adapted to the clamping protrusion, and the inner wall of the shell is provided with a rotating clamping groove adapted to the rotating buckle; The clamping protrusion includes a first inclined surface and a second inclined surface, wherein the first inclined surface is a side of the clamping protrusion facing the first unlocking direction, and the second inclined surface is a side of the clamping protrusion facing away from the first unlocking direction, and the second inclined surface is more gentle than the first inclined surface; A pre-card slot is provided on one side of the clamping groove facing the first unlocking direction, and a partition rib is provided between the pre-card slot and the clamping groove; The outer shell is configured to be similar to a cylindrical shape, the second housing is configured to be similar to a disc shape, the elastic arm is arranged at the edge of the second housing, and the elastic arm extends along the circumferential direction of the second housing. A toggle handle is provided at the end of the elastic arm, and the toggle handle protrudes laterally from the elastic arm.

6. The battery mounting structure according to any one of claims 2-5, characterized in that, When the first locking portion and the second locking portion are provided on the second housing, the battery mounting structure further includes an adjustment member connected to the second housing. The adjustment member is for external mounting and can adjust the angle relative to the second housing; The adjustment member is pivotally connected to the edge of the second housing so that the adjustment member can apply the rotational torque amplified to the second housing.

7. The battery mounting structure according to claim 1, wherein, When the first housing is provided with the first clamping portion and the second clamping portion, a first circuit board is arranged inside the first housing. The first clamping portion is configured as a conductive elastic sheet, and the conductive elastic sheet is connected to the first circuit board.

8. The battery mounting structure according to claim 7, characterized in that, When the first housing is provided with the first clamping portion and the second clamping portion, the second clamping portion is configured as an elastic buckle, and the elastic buckle extends into the first housing; The included angle between the unlocking direction of the second clamping portion and the unlocking direction of the first clamping portion is greater than 60°.

9. The battery mounting structure according to claim 8, characterized in that, When the first housing is provided with the first clamping portion and the second clamping portion, the first housing is further provided with a rigid buckle, and the rigid buckle, the first clamping portion and the second clamping portion jointly limit the button battery.

10. A human body sensing device, comprising the battery mounting structure according to any one of claims 1-9, characterized in that, Further included are: A first circuit board arranged inside the first housing; An end cap covering one end of the first housing away from the battery receiving groove; A pyroelectric sensor arranged on one side of the first circuit board facing the end cap. The pyroelectric sensor can be triggered in response to the irradiation of infrared light; the end cap is provided with a lens member for converging the infrared light on the pyroelectric sensor; A second circuit board mounted on one side of the first circuit board facing the end cap; A radar sensing module arranged on the second circuit board. The radar sensing module generates radar detection waves, and the radar detection waves are emitted externally through the end cap; Wherein, a washer is arranged between the pyroelectric sensor and the first circuit board, and the washer raises the pyroelectric sensor so that the height of the pyroelectric sensor is adapted to that of the lens member; Three electronic components are arranged on one side of the first circuit board facing the end cap. The three electronic components are distributed around the washer to radially limit the washer; the pins of the pyroelectric sensor pass through the washer and are welded to the first circuit board, and the washer is clamped between the pyroelectric sensor and the first circuit board so that the washer is axially limited; The three electronic components include two LED lights and a capacitor, and the light emitted by the LED lights is externally displayed through the lens member.

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