Safety lock and security detection equipment

Abstract

The utility model discloses a safety lock and security detection equipment, and relates to the technical field of safety lock design. The safety lock is applied to the security detection equipment, and comprises a lock catch which is used for being installed on the inner surface of a first shell of the security detection equipment; the lock pin is used for being installed on the inner surface of a second shell of the security detection equipment, the lock pin is rotationally connected with the second shell, the lock pin is provided with an operation part, the operation part is exposed through a through hole of the second shell, and under the condition that the second shell is covered with the first shell, the lock pin is buckled with the lock catch, so that the safety lock is locked; under the condition that the operation part drives the lock pin to rotate, the lock pin and the lock catch are not matched. According to the scheme, the problem that locking operation of an existing safety lock is tedious can be solved.

Description

Technical Field

[0001] The present application belongs to the technical field of safety lock design, and specifically relates to a safety lock and security detection equipment. Background Art

[0002] Safety locks are a type of lock designed to ensure that equipment is absolutely closed and remains in a safe state, preventing accidental opening. They are commonly used on power switches, gas switches, pipeline valves, areas requiring prominent warnings, and security detection equipment.

[0003] Taking security detection equipment as an example, according to industry standards, these devices must be locked with a safety lock when in use. They cannot be opened by hand, requiring tools. Currently, after wiring or debugging, security detection equipment requires manual locking of the front cover with a screwdriver to prevent accidental or bare-hand opening. This locking process is quite cumbersome. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a safety lock and a security detection device, which are applied to the security detection device and can solve the problem that the locking operation of the current safety lock is relatively cumbersome.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of the present application provide a safety lock for use in security detection equipment, comprising:

[0007] A lock buckle, the lock buckle being used to be mounted on the inner surface of the first housing of the security detection device;

[0008] A lock pin is used to be mounted on the inner surface of the second housing of the security detection device, the lock pin is rotatably connected to the second housing, and the lock pin is provided with an operating portion, the operating portion is exposed through the through hole of the second housing,

[0009] When the first shell is covered with the second shell, the lock pin is engaged with the lock buckle to lock the safety lock; when the lock pin is driven to rotate by the operating part, the lock pin is released from the lock buckle.

[0010] In the second aspect, an embodiment of the present application also provides a security detection device, including a first shell, a second shell and the above-mentioned safety lock, the first shell can be covered on the second shell to form a accommodating space, the safety lock is arranged in the accommodating space, the lock buckle is installed on the inner surface of the first shell, and the lock pin is installed on the inner surface of the second shell.

[0011] In an embodiment of the present application, during the installation of the security detection device, when the first housing is closed onto the second housing, the locking pin engages with the locking catch to lock the security lock. That is, during the installation of the first housing onto the second housing, the locking pin provided on the second housing engages with the locking catch on the first housing, thereby locking the security lock. During this process, there is no need to manually lock the device using a screwdriver or other tool. The self-locking method is adopted, and the locking process is relatively simple. The device can be locked during the installation of the first housing, which can avoid the situation where the device forgets to lock the device. When the first housing needs to be opened, a tool such as a screwdriver can be used to act on the operating portion, thereby driving the locking pin to rotate through the operating portion, so that the locking pin and the locking catch are disengaged. At this time, the first housing can be removed from the second housing, which can avoid manual unlocking. Therefore, the present application can solve the problem that the locking operation of current security locks is relatively cumbersome. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figures 1 to 2 Schematic diagram of the structure of the security detection device disclosed in the embodiment of this application in different states;

[0013] Figure 3 An exploded diagram of the security detection device disclosed in an embodiment of the present application;

[0014] Figures 4 and 5 Schematic diagram of the structure of the second housing, the locking pin and the elastic driving member in different states disclosed in the embodiment of the present application;

[0015] Figures 6 and 7 Schematic diagram of the structure of the locking pin disclosed in the embodiment of the present application at different viewing angles;

[0016] Figure 8 This is a schematic structural diagram of the elastic driving member disclosed in an embodiment of the present application;

[0017] Figures 9 to 11 1 is a side view of the elastic driving member disclosed in the embodiment of the present application in different states;

[0018] Figures 12 to 14 Cross-sectional views of the security detection device disclosed in the embodiments of the present application in different locking stages;

[0019] Figures 15 to 18 Cross-sectional views of the security detection device disclosed in the embodiments of the present application at different unlocking stages.

[0020] Description of reference numerals:

[0021] 100 - security detection device, 110 - first housing, 120 - second housing, 121 - through hole, 122 - bottom surface, 122a - receiving groove, 123 - annular side surface, 130 - support frame, 131 - mounting opening, 140 - fastener, 150 - bracket, 160 - circuit board, 170 - infrared reflector;

[0022] 200-locking part, 210-first buckling part, 220-installing part;

[0023] 300 - locking pin, 310 - operating part, 320 - rotating shaft, 321 - shaft body, 322 - connecting part, 330 - second buckling part, 331 - main body, 332 - second hanging part, 332a - inclined surface, 333 - sliding groove, 340 - protruding part, 341 - arc surface;

[0024] 400 - elastic driving member, 410 - first plate segment, 420 - second plate segment, 421 - connecting portion, 422 - bending portion. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0027] The following describes in detail the safety lock and security detection equipment provided by the embodiments of the present application through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0028] like Figures 1 to 18 As shown, the embodiment of the present application discloses a safety lock, which is applied to the security detection equipment 100. Of course, the safety lock can also be applied to other types of structures such as power supply equipment, gas source equipment, etc., and the embodiment of the present application does not impose specific restrictions on this.

[0029] The safety lock comprises a lock buckle 200 and a lock pin 300 .

[0030] The lock buckle 200 is used to be installed on the inner surface of the first housing 110 of the security detection device 100 .

[0031] The locking pin 300 is mounted on the inner surface of the second housing 120 of the security detection device 100. During installation, the second housing 120 can be mounted on a wall first, and then the first housing 110 can be mounted on the second housing 120. The locking pin 300 is rotatably connected to the second housing 120 and includes an operating portion 310, which is exposed through a through-hole 121 in the second housing 120. To open the first and second housings 110, a tool such as a screwdriver can be used to apply pressure to the operating portion 310 to rotate the locking pin 300. When the first housing 110 is closed over the second housing 120, the locking pin 300 engages with the lock catch 200, securing the security lock. Once the operating portion 310 is used to rotate the locking pin 300, a tool such as a screwdriver can be used to release the locking pin 300 from the lock catch 200.

[0032] When the first housing 110 is opened, the locking pin 300 is driven by the operating part 310 to rotate, so that the locking pin 300 and the lock buckle 200 are released. At this time, the first housing 110 can be removed from the second housing 120, which can avoid manual unlocking. Therefore, the present application can solve the problem that the locking operation of current safety locks is relatively complicated.

[0033] In an optional embodiment, the lock 200 is provided with a first fastening portion 210, and the lock pin 300 includes a connected rotating shaft 320 and a second fastening portion 330. The first end of the rotating shaft 320 is configured to be rotatably connected to the second housing 120, and the second end of the rotating shaft 320 is configured to be rotatably connected to the through hole 121 of the second housing 120. The second end of the rotating shaft 320 forms the operating portion 310, and the second fastening portion 330 is disposed on the circumference of the rotating shaft 320. When the first housing 110 is covered with the second housing 120, the second fastening portion 330 is fastened to the lock 200. When the first housing 110 needs to be opened, a tool such as a screwdriver is used to act on the operating portion 310, which drives the rotating shaft 320 to rotate, thereby causing the second fastening portion 330 to disengage from the lock 200. This solution utilizes the structure of the rotating shaft 320 itself to form the operating portion 310, allowing for structural reuse. This not only facilitates manufacturing but also simplifies the installation process. Furthermore, the locking pin 300 employing this structure is simple and easy to operate. Of course, the rotating shaft 320 can also be omitted, in which case the operating portion 310 is located on the second locking portion 330.

[0034] In a further optional embodiment, the lock buckle 200 includes a connected mounting portion 220 and a first buckling portion 210, the mounting portion 220 is used to connect to the first housing 110, and the lock pin 300 also includes a protrusion 340 provided on the circumferential surface of the rotating shaft 320, the first end of the protrusion 340 is connected to the rotating shaft 320, the length direction of the protrusion 340 is parallel to the extension direction of the central axis of the rotating shaft 320, the height direction of the protrusion 340 is the same as the radial direction of the rotating shaft 320, the protrusion 340 and the second buckling portion 330 are arranged at intervals along the circumference of the rotating shaft 320, and it should be noted that the protrusion 340 and the second buckling portion 330 need to be spaced apart in the circumferential direction of the rotating shaft 320. The preset arc length, that is, the angle between the protrusion 340 and the second buckling portion 330 is a preset angle, so as to prevent the second buckling portion 330 from being fastened to the first buckling portion 210 during the locking process or the second buckling portion 330 from being released from the first buckling portion 210 during the unlocking process, and the second end of the protrusion 340 from abutting against the mounting portion 220, thereby causing the locking pin 300 to be stuck. The above-mentioned preset arc length or preset angle can be selected according to actual needs and is not specifically limited here; the above-mentioned first end and second end of the protrusion 340 specifically refer to the height direction of the protrusion 340, and the protrusion 340 has a first end and a second end arranged opposite to each other.

[0035] When the lock pin 300 is engaged with the lock buckle 200, a gap exists between the second end of the protrusion 340 and the mounting portion 220, thereby preventing the second end of the protrusion 340 from abutting against the mounting portion 220 when the second fastening portion 330 has not yet been fastened to the first fastening portion 210 during the locking process; or, when the lock pin 300 is released from the lock buckle 200, a gap exists between the second end of the protrusion 340 and the mounting portion 220, thereby preventing the second end of the protrusion 340 from abutting against the mounting portion 220 when the second fastening portion 330 has not yet disengaged from the first fastening portion 210 during the unlocking process, thereby causing the lock pin 300 to be stuck; after the lock pin 300 is released from the lock buckle 200 and the lock pin 300 is driven to rotate by the operating portion 310, the second end of the protrusion 340 abuts against the mounting portion 220, so that the first housing 110 and the second housing 120 are separated. When the second snap-fit ​​portion 330 is disengaged from the first snap-fit ​​portion 210 during the process of rotating the lock pin 300 through the operating portion 310, the lock pin 300 is continued to be driven to rotate so that the protrusion 340 on the lock pin 300 abuts against the mounting portion 220 on the lock buckle 200, thereby pushing open the first shell 110. At this time, there is no need to manually open the first shell 110. The lock pin 300 is used to open the first shell 110 during the unlocking process, which helps to simplify the steps of opening the security detection device and improve work efficiency.

[0036] Optionally, the second end of the protrusion 340 is provided with a curved surface 341. During the process of engaging the locking pin 300 with the lock buckle 200, or during the process of disengaging the locking pin 300 from the lock buckle 200, a gap exists between the curved surface 341 and the mounting portion 220. After the locking pin 300 is disengaged from the lock buckle 200 and the locking pin 300 is driven to rotate by the operating portion 310, the curved surface 341 abuts against the mounting portion 220, so that the first shell 110 is separated from the second shell 120. When the locking pin 300 is driven to rotate by the operating portion 310, the curved surface 341 abuts against the mounting portion 220. At this time, the curved surface 341 and the mounting portion 220 are in linear contact, and the contact area between the two is small, which can reduce the friction between the protrusion 340 and the mounting portion 220, thereby improving the rotational flexibility of the locking pin 300; and, during the rotation of the locking pin 300, in the circumferential direction of the circle where the curved surface 341 is located, any straight line of the curved surface 341 can abut against the mounting portion 220, thereby facilitating the opening of the first shell 110.

[0037] Optionally, the protrusion 340 includes a first side surface, a first curved surface, a top surface, a second curved surface and a second side surface connected in sequence, the first side surface and the second side surface are arranged back to back, both of which are connected to the circumferential surface of the rotating shaft 320, the top surface is located on the side of the protrusion 340 away from the rotating shaft 320, the first curved surface is close to the second buckling portion 330, and the first curved surface abuts against the mounting portion 220.

[0038] In another optional embodiment, the second snap-fitting portion 330 and the first snap-fitting portion 210 can be matched with each other by means of plug-in, concave-convex matching, etc.; or, the first snap-fitting portion 210 is a first hanging portion, and the second snap-fitting portion 330 includes a connected main body portion 331 and a second hanging portion 332, one end of the main body portion 331 is connected to the circumferential surface of the rotating shaft 320, and the second hanging portion 332 and the rotating shaft 320 are arranged at intervals along the height direction of the main body portion 331. When the first shell 110 is covered on the second shell 120, the second hanging portion 332 is hung on the first snap-fitting portion 210, and the two opposite surfaces of the second hanging portion 332 and the first snap-fitting portion 210 are in contact with each other, and at least a portion of the first snap-fitting portion 210 is located between the second hanging portion 332 and the rotating shaft 320. In this solution, the lock pin 300 and the lock buckle 200 are connected by hanging so that the safety lock is in a locked state. It has the characteristics of simple structure and easy production. In addition, the second hanging part 332 and the first buckling part 210 are in surface contact, and the contact area between the two is large, which is conducive to improving the connection stability between the lock pin 300 and the lock buckle 200.

[0039] Optionally, the thickness of the second hanging portion 332 may remain constant in the height direction of the second hanging portion 332. The height direction of the second hanging portion 332 specifically refers to the direction extending from the connection end of the second hanging portion 332 connected to the main body 331 to the free end of the second hanging portion 332. Alternatively, in other embodiments, the surface of the second hanging portion 332 facing away from the rotating shaft 320 is an inclined surface 332a, and the thickness of the second hanging portion 332 gradually decreases in the height direction of the second hanging portion 332. When the first housing 110 is covered with the second housing 120, the inclined surface 332a can slidably engage with the first fastening portion 210 to allow the second hanging portion 332 to be fastened to the first fastening portion 210. During this process, the inclined surface 332a serves as a guide, thereby improving the smoothness of the fastening of the first fastening portion 210 and the second fastening portion 330, as well as the smoothness of the installation of the first housing 110 onto the second housing 120.

[0040] In an optional embodiment, the security lock further includes an elastic drive member 400, which is mounted on the inner surface of the second housing 120. The elastic drive member 400 may directly abut the rotating shaft 320; alternatively, the elastic drive member 400 abuts the second locking portion 330. The elastic drive member 400 drives the rotating shaft 320 to rotate about its central axis via the second locking portion 330. In this case, the locking pin 300 has a longer moment arm, which facilitates the rotational flexibility of the locking pin 300. When the first housing 110 is closed onto the second housing 120, the elastic drive member 400 provides a greater rebound force for the locking pin 300, thereby firmly engaging the locking pin 300 with the lock buckle 200 and preventing it from becoming loose. When the operating portion 310 is used to rotate the locking pin 300, a tool such as a screwdriver acts on the operating portion 310. The torque of the screwdriver must overcome the rebound force of the elastic drive member 400, causing the elastic drive member 400 to deform.

[0041] Optionally, when the first housing 110 covers the second housing 120 and when the locking pin 300 is driven to rotate by the operating portion 310 , the elastic driving member 400 is deformed.

[0042] In another optional embodiment, the elastic driving member 400 may be a spring; or, the elastic driving member 400 includes a first plate segment 410 and a second plate segment 420 connected to each other, and the first plate segment 410 is bent relative to the second plate segment 420, that is, the elastic driving member 400 has a V-shaped structure, the first plate segment 410 is used to be connected to the second shell 120, the second plate segment 420 abuts against the second buckling portion 330, the second plate segment 420 is slidingly connected to the second buckling portion 330, and the second plate segment 420 can rotate relative to the first plate segment 410, at which time the angle between the first plate segment 410 and the second plate segment 420 changes. In this solution, the elastic driving member 400 adopts a V-shaped plate structure, and the contact area between it and the second buckling portion 330 is large, which is conducive to improving the rotational stability of the locking pin 300 during the locking and unlocking process, as well as the stability of the locking pin 300 after locking, thereby avoiding accidental unlocking; and the second plate segment 420 is slidingly connected to the second buckling portion 330. At this time, there is no need to open a mounting hole on the second buckling portion 330, which is conducive to ensuring the structural strength of the second buckling portion 330.

[0043] In an optional embodiment, the second fastening portion 330 is provided with a slide groove 333 that extends along the height direction of the second fastening portion 330. The height direction of the second fastening portion 330 here specifically refers to the direction extending from the connection end of the second fastening portion 330 connected to the rotating shaft 320 to the free end of the second fastening portion 330. The second plate segment 420 slides in engagement with the slide groove 333. In this case, the slide groove 333 provides guidance for the second plate segment 420, allowing it to slide along a predetermined direction and prevent tilting. Of course, the slide groove 333 may be omitted, or a guide groove may be provided on the second plate segment 420.

[0044] Optionally, the first buckling portion 210 is a first hanging portion, the second buckling portion 330 includes a connected main body portion 331 and a second hanging portion 332, one end of the main body portion 331 is connected to the circumference of the rotating shaft 320, the second hanging portion 332 and the rotating shaft 320 are spaced apart along the height direction of the main body portion 331, the second plate segment 420 includes a connected connecting portion 421 and a bent portion 422, the connecting portion 421 is connected to the first plate segment 410, the bent portion 422 protrudes from the connecting portion 421, and the bent portion 422 abuts against the sliding groove 333. The bottom of the groove, optionally, can be in surface contact or line contact between the bent portion 422 and the bottom of the slide groove 333. When the bent portion 422 and the bottom of the slide groove 333 are in surface contact, the contact surface between the bent portion 422 and the bottom of the slide groove 333 is a long strip structure; when the bent portion 422 and the bottom of the slide groove 333 are in line contact, the bent portion 422 can be a V-shaped structure, that is, the bent portion 422 includes a first side wall and a second side wall connected, and the connection between the first side wall and the second side wall is in sliding engagement with the bottom of the slide groove 333. In this solution, only the bent portion 422 is in contact with the bottom of the slide groove 333, while the connecting portion 421 is spaced apart from the second buckling portion 330. This can reduce the contact area between the second plate segment 420 and the second buckling portion 330, thereby reducing the friction between the two, which is conducive to improving the rotational flexibility of the locking pin 300.

[0045] When the first housing 110 is closed over the second housing 120, the second hanging portion 332 is hung on the first fastening portion 210, the bent portion 422 abuts against the side of the main body 331 facing away from the second hanging portion 332, and the bent portion 422 is located at the location of the second hanging portion 332 on the main body 331. At this time, the force exerted by the elastic driving member 400 on the locking pin 300 is concentrated at the location of the second hanging portion 332, which helps to improve the fastening stability of the second hanging portion 332 and the first fastening portion 210, and ensures a more stable fastening of the locking pin 300 and the lock buckle 200. Of course, in the height direction of the main body 331, the bent portion 422 can also abut below or above the location of the second hanging portion 332 on the main body 331.

[0046] It should be noted that, based on the above content, on the one hand, the elastic driving member 400 needs to have sufficient resilience to ensure that the locking pin 300 locks the first shell 110. On the other hand, the resilience of the locking pin 300 should not be too large when rotating. Therefore, the shape, size, elastic modulus and other parameters of the elastic driving member 400 need to be determined according to actual needs. For example, the elastic driving member 400 can be a high-elastic steel sheet designed into a V shape. At the same time, considering that the elastic driving member 400 will slip on its surface during the rotation of the locking pin 300, the position where the elastic driving member 400 contacts the locking pin 300 is designed to be a bent structure to form a convex point, thereby reducing the friction during the sliding process and making the locking pin 300 rotate more smoothly.

[0047] Based on the safety lock disclosed in the embodiments of the present application, the embodiments of the present application also discloses a security detection device, which includes a first shell 110, a second shell 120 and the safety lock disclosed in any of the above embodiments. The first shell 110 can be covered on the second shell 120 to form a accommodating space. The safety lock is arranged in the accommodating space, the lock buckle 200 is installed on the inner surface of the first shell 110, and the lock pin 300 is installed on the inner surface of the second shell 120.

[0048] In an optional embodiment, the inner surface of the second shell 120 includes a connected bottom surface 122 and an annular side surface 123, the annular side surface 123 is provided with a through hole 121, the bottom surface 122 is provided with a support frame 130, the support frame 130 is opposite to the through hole 121, and the end of the support frame 130 facing away from the bottom surface 122 is provided with a mounting opening 131, the locking pin 300 includes a rotating shaft 320 and a second buckling portion 330 and a protrusion 340 arranged on the circumferential surface of the rotating shaft 320 at intervals along the circumference of the rotating shaft 320, the rotating shaft 320 includes a shaft body 321 and a connecting portion 322, the diameter of the connecting portion 322 is smaller than the diameter of the shaft body 321, the connecting portion 322 is connected to the first end of the shaft body 321, and the connecting portion 322 is rotatably arranged in the mounting opening 131, optionally, the connecting portion 322 can be directly overlapped on the mounting opening 131, or the connecting portion 322 is snapped into the mounting opening 131, thereby improving the rotational stability of the connecting portion 322. The second end of the shaft body 321 is rotatably disposed within the through-hole 121. The second end of the shaft body 321 forms the operating portion 310, which is exposed through the through-hole 121. This allows the use of a tool such as a screwdriver to operate the operating portion 310, thereby driving the locking pin 300 to rotate. The second locking portion 330 and the protruding portion 340 are both disposed on the circumference of the shaft body 321. The larger diameter of the shaft body 321 results in a longer circumference, facilitating the arrangement of the second locking portion 330 and the protruding portion 340. Furthermore, the smaller diameter of the connecting portion 322 allows the size of the support frame 130 to be reduced accordingly.

[0049] In another optional embodiment, the inner surface of the second shell 120 includes a bottom surface 122, the locking pin 300 is rotatably disposed on the bottom surface 122, and the bottom surface 122 is provided with a receiving groove 122a. The safety lock also includes an elastic driving member 400, and the elastic driving member 400 includes a first plate segment 410 and a second plate segment 420 connected to each other. The first plate segment 410 is bent relative to the second plate segment 420, and the first plate segment 410 is disposed in the receiving groove 122a. The side surface of the first plate segment 410 is in contact with the side wall of the receiving groove 122a. At this time, the receiving groove 122a positions the first plate segment 410 to prevent the first plate segment 410 from shaking in the receiving groove 122a; at the same time, the first plate segment 410 is disposed in the receiving groove 122a, which can prevent the first plate segment 410 from occupying additional space in the receiving space, thereby reserving space for other structures in the receiving space. The second plate segment 420 abuts against the second buckling portion 330 . The second plate segment 420 is slidably connected to the locking pin 300 . The second plate segment 420 can rotate relative to the first plate segment 410 .

[0050] Optionally, the first plate segment 410 is provided with a through hole, and the bottom of the receiving groove 122a is provided with a threaded connection hole. The security detection device further includes a fastener 140, one end of which passes through the through hole and is threadedly connected to the threaded connection hole to fix the first plate segment 410, thereby improving the stability of the elastic driving member 400. Optionally, the fastener 140 can be a screw, etc., which is not specifically limited here.

[0051] Optionally, the security detection device also includes a bracket 150, a circuit board 160 and an infrared reflector 170 arranged in the accommodating space, the bracket 150 is arranged on the inner surface of the first shell 110, the circuit board 160 and the infrared reflector 170 are both arranged on the bracket 150, the circuit board 160 is electrically connected to the infrared reflector 170, and the infrared reflector 170 is used to detect whether there is infrared intrusion around the security detection device.

[0052] Optionally, the security detection equipment disclosed in the present application can adopt a dual monitoring method of microwave and passive infrared to detect whether a human body enters the detection area and whether it moves in the detection area. It can intelligently identify human body movement information, thereby making detection more accurate and efficient, and effectively preventing false alarms. The security detection equipment is mainly composed of an optical system, a pyroelectric sensor, a microwave sensor, an alarm controller and other parts. Once a human body enters the detection area, the pyroelectric sensor will generate a mutation signal after being focused by the optical system (reflector), and the microwave sensor will detect the human body movement signal, which will be comprehensively analyzed and judged by the controller, thereby triggering an alarm signal.

[0053] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A safety lock, used in a security detection device (100), characterized in that: include: A lock buckle (200), the lock buckle (200) being used to be mounted on the inner surface of the first housing (110) of the security detection device (100); A locking pin (300) is used to be mounted on the inner surface of the second housing (120) of the security detection device (100), the locking pin (300) is rotatably connected to the second housing (120), and the locking pin (300) is provided with an operating portion (310), and the operating portion (310) is exposed through a through hole (121) of the second housing (120). When the first housing (110) is covered with the second housing (120), the locking pin (300) is engaged with the locking buckle (200) to lock the safety lock; when the locking pin (300) is driven to rotate by the operating part (310), the locking pin (300) is released from the locking buckle (200).

2. The safety lock according to claim 1, characterized in that: The lock buckle (200) is provided with a first buckling portion (210), and the lock pin (300) includes a connected rotating shaft (320) and a second buckling portion (330), wherein the first end of the rotating shaft (320) is used for rotationally connecting with the second housing (120), and the second end of the rotating shaft (320) is used for rotationally connecting with the through hole (121) of the second housing (120), and the second end of the rotating shaft (320) forms the operating portion (310), and the second buckling portion (330) is provided on the circumference of the rotating shaft (320). When the first shell (110) is covered on the second shell (120), the second buckling portion (330) is buckled with the lock buckle (200).

3. The safety lock according to claim 2, characterized in that: The lock buckle (200) includes a mounting portion (220) and a first buckling portion (210) connected to each other, the mounting portion (220) being used to connect to the first housing (110), the locking pin (300) further includes a protrusion (340) provided on the circumferential surface of the rotating shaft (320), a first end of the protrusion (340) being connected to the rotating shaft (320), the protrusion (340) and the second buckling portion (330) being arranged at intervals along the circumference of the rotating shaft (320), and a second end of the protrusion (340) being provided with an arcuate surface (341). During the process of the locking pin (300) and the lock buckle (200) being engaged, or during the process of the locking pin (300) and the lock buckle (200) being released, a gap exists between the arcuate surface (341) and the mounting portion (220); after the locking pin (300) and the lock buckle (200) are released, and when the locking pin (300) is driven to rotate by the operating portion (310), the arcuate surface (341) abuts against the mounting portion (220), so that the first shell (110) and the second shell (120) are separated.

4. The safety lock according to claim 2, characterized in that: The first buckling portion (210) is a first hanging portion, and the second buckling portion (330) includes a main body portion (331) and a second hanging portion (332) connected to each other. One end of the main body portion (331) is connected to the circumference of the rotating shaft (320), and the second hanging portion (332) and the rotating shaft (320) are arranged at intervals along the height direction of the main body portion (331). When the first shell (110) is covered on the second shell (120), the second hanging portion (332) is hung on the first buckling portion (210), and the two opposite surfaces of the second hanging portion (332) and the first buckling portion (210) are in contact with each other, and at least a portion of the first buckling portion (210) is located between the second hanging portion (332) and the rotating shaft (320).

5. The safety lock according to claim 4, characterized in that: The side of the second hanging portion (332) facing away from the rotating shaft (320) is an inclined surface (332a), and the thickness of the second hanging portion (332) gradually decreases in the height direction of the second hanging portion (332). When the first shell (110) is covered on the second shell (120), the inclined surface (332a) can be slidably matched with the first buckling portion (210) so that the second hanging portion (332) is hung on the first buckling portion (210).

6. The safety lock according to claim 2, characterized in that: The safety lock further comprises an elastic driving member (400), wherein the elastic driving member (400) is used to be mounted on the inner surface of the second housing (120), wherein the elastic driving member (400) abuts against the second buckling portion (330), and wherein the elastic driving member (400) drives the rotating shaft (320) to rotate around its central axis via the second buckling portion (330).

7. The safety lock according to claim 6, characterized in that: The second buckling portion (330) is provided with a slide groove (333), and the slide groove (333) extends along the height direction of the second buckling portion (330). The elastic driving member (400) includes a first plate segment (410) and a second plate segment (420) connected to each other. The first plate segment (410) is bent relative to the second plate segment (420). The first plate segment (410) is used to be connected to the second shell (120). The second plate segment (420) abuts against the second buckling portion (330), and the second plate segment (420) is slidably matched with the slide groove (333). The second plate segment (420) can rotate relative to the first plate segment (410).

8. The safety lock according to claim 7, characterized in that: The first buckling portion (210) is a first hanging portion, the second buckling portion (330) includes a main body portion (331) and a second hanging portion (332) connected to each other, one end of the main body portion (331) is connected to the circumference of the rotating shaft (320), the second hanging portion (332) and the rotating shaft (320) are spaced apart along the height direction of the main body portion (331), the second plate segment (420) includes a connected connecting portion (421) and a bent portion (422), the connecting portion (421) is connected to the first plate segment (410), the bent portion (422) protrudes from the connecting portion (421), and the bent portion (422) abuts against the bottom of the sliding groove (333). When the first shell (110) is covered with the second shell (120), the second hanging portion (332) is hung on the first buckling portion (210), the bent portion (422) abuts against a side of the main body (331) facing away from the second hanging portion (332), and the bent portion (422) is located at the position of the second hanging portion (332) of the main body (331).

9. A security detection device, characterized in that: The invention comprises a first shell (110), a second shell (120) and a safety lock according to any one of claims 1 to 8, wherein the first shell (110) can be covered on the second shell (120) to form a receiving space, the safety lock is arranged in the receiving space, the lock buckle (200) is installed on the inner surface of the first shell (110), and the lock pin (300) is installed on the inner surface of the second shell (120).

10. The security detection device according to claim 9, characterized in that: The inner surface of the second shell (120) includes a bottom surface (122) and an annular side surface (123) connected to each other, the annular side surface (123) is provided with the through hole (121), the bottom surface (122) is provided with a support frame (130), the support frame (130) is opposite to the through hole (121), and the end of the support frame (130) away from the bottom surface (122) is provided with a mounting opening (131), the locking pin (300) includes a rotating shaft (320) and a second buckling portion (330) and a protruding portion (340) arranged on the circumference of the rotating shaft (320) at intervals along the circumference of the rotating shaft (320), The rotating shaft (320) includes a shaft body (321) and a connecting portion (322), wherein the diameter of the connecting portion (322) is smaller than the diameter of the shaft body (321), the connecting portion (322) is connected to the first end of the shaft body (321), the connecting portion (322) is rotatably disposed in the mounting opening (131), the second end of the shaft body (321) is rotatably disposed in the through hole (121), the second end of the shaft body (321) forms the operating portion (310), and the second buckling portion (330) and the protruding portion (340) are both disposed on the circumferential surface of the shaft body (321).

11. The security detection device according to claim 9, characterized in that: The inner surface of the second shell (120) includes a bottom surface (122), the locking pin (300) is rotatably arranged on the bottom surface (122), and the bottom surface (122) is provided with a receiving groove (122a). The safety lock also includes an elastic driving member (400), and the elastic driving member (400) includes a first plate segment (410) and a second plate segment (420) connected to each other, the first plate segment (410) is bent relative to the second plate segment (420), the first plate segment (410) is arranged in the receiving groove (122a), the side surface of the first plate segment (410) is in contact with the side wall of the receiving groove (122a), the second plate segment (420) abuts against the locking pin (300), the second plate segment (420) is slidably connected to the locking pin (300), and the second plate segment (420) can rotate relative to the first plate segment (410).

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