Induction camera dismounting structure on glass door

Abstract

This invention discloses a disassembly and assembly structure for a sensor camera on a glass door, comprising a main body with a box-like structure installed on the glass door; and a lifting assembly installed within the main body. The lifting assembly includes a drum and limiting discs coaxially fixed to both ends of the drum. A traction rope is wound around the drum, and the other end of the traction rope is connected to the monitoring camera body via an elastic connection structure. Through the cooperation of the lifting assembly, operating assembly, cooperating assembly, and operating lever, the monitoring camera body automatically falls under gravity before the lever is in the first position. When the lever is in the second position, the lifting assembly can raise the monitoring camera body to its original working position. When the lever is in the third position, it automatically resets to the initial position, and the lifting assembly stops raising the monitoring camera body. The entire process is operated using an operating lever, eliminating the need for a ladder to disassemble the monitoring camera body, avoiding the dangers of climbing, and improving safety.

Description

Technical Field

[0001] This invention relates to the field of camera assembly and disassembly technology, and in particular to a sensor camera assembly and disassembly structure for a glass door. Background Technology

[0002] Sensor cameras can sense and capture images or videos of the surrounding environment, converting them into electrical signals for processing and transmission. They typically consist of a camera sensor, image processing unit, video transmission and storage components, and a control unit. Installed on glass doors in office buildings and other similar locations, they provide real-time monitoring and recording of the area around the glass door to enhance security. Combined with identification technologies such as facial recognition or fingerprint recognition, they can be used to manage entrances and exits; they can track the number of people passing through glass doors and provide data analysis on traffic patterns and trends; and they can offer personalized and convenient user experiences.

[0003] To achieve a wider field of view and reduce susceptibility to external factors, sensor cameras are often installed high on glass doors. However, when the camera malfunctions or requires maintenance, climbing a ladder is necessary to reach the high position, and disassembly is time-consuming and carries a high risk. Therefore, we propose a sensor camera disassembly and assembly structure for glass doors to address these issues. Summary of the Invention

[0004] The present invention aims to provide a structure for assembling and disassembling a sensor camera on a glass door to solve the problem of high risk in assembling and disassembling sensor cameras at high altitudes in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sensor camera mounting and dismounting structure for a glass door, comprising:

[0007] The main body, which is box-shaped and installed on the glass door;

[0008] The lifting assembly installed inside the main body includes a drum and limit discs coaxially fixed to both ends of the drum. The drum is wound with a traction rope, and the other end of the traction rope is connected to the monitoring camera body through an elastic connection structure. The drum can wind the traction rope along its own axis to drive the monitoring camera body to rise.

[0009] An operating component used in conjunction with a lifting assembly includes a lifting rod that is vertically penetrating the main body and elastically set. A synchronizing rod is fixedly connected to the upper end of the lifting rod, and a meshing tooth arc that meshes with one of the limiting discs is fixedly connected to the lower end of the synchronizing rod.

[0010] A cooperating component for use with the operating component, the cooperating component including a pin fixedly connected to the lifting rod and a movable component cooperating with the pin, the movable component being provided with a first gear, a second gear and a third gear from bottom to top;

[0011] Specifically, when the pin is in the first position, the meshing tooth arc separates from the limiting plate, allowing the monitoring camera body to fall freely. When the pin is in the second position, the drum rotates to wind the traction rope, causing the monitoring camera body to rise to the camera position. When the pin reaches the third position, the pin can be passively reset to the initial position, and the meshing tooth arc engages with the limiting plate.

[0012] Preferably, the lifting assembly further includes a first support plate and a second support plate vertically fixed to the inner wall of the main body, the two ends of the rotating shaft are respectively rotatably connected to the first support plate and the second support plate, and a rotary motor for driving the rotating shaft is fixedly installed on one side of the first support plate.

[0013] Preferably, the operating component further includes a limiting ring fixedly connected to the lifting rod, the lifting rod is fitted with a first spring, the two ends of the first spring are fixedly connected to the limiting ring and the bottom end of the main body respectively, and the synchronizing rod is slidably sleeved on the second support plate.

[0014] Preferably, the mating assembly further includes two elastic telescopic rods fixed to the inner sidewall of the main body. The telescopic ends of the two elastic telescopic rods are fixedly connected to the moving part. The moving part forms a first inclined plane, a second inclined plane, and a third inclined plane with the same slope from bottom to top. The second inclined plane and the third inclined plane have the same length, and the length of the first inclined plane is greater than the length of the second inclined plane. The upper end of the first inclined plane is adjacent to a first L-shaped straight surface, and the upper end of the second inclined plane is adjacent to a second L-shaped straight surface. The first L-shaped straight surface and the second inclined plane form a first slot, which is a first position. The second L-shaped straight surface and the third inclined plane form a second slot, which is a second position. The third position is formed on the third inclined plane. An L-shaped return channel is provided at the third position. A one-way door is installed at the lower end of the return channel. The one-way door can only deflect in the direction away from the return slot. A second contact switch is fixedly connected to the lower end of the one-way door.

[0015] Preferably, the elastic connection structure includes an annular member that is fixedly connected to the main body of the surveillance camera using bolts, and any radial cross section of the annular member is L-shaped. An adapting plate is elastically provided inside the annular member. The lower end of the traction rope is divided into multiple ends and fixedly connected to the adapting plate. The lower end of the main body is provided with a bottom groove for accommodating the elastic connection structure.

[0016] Preferably, it also includes a speed limiting component, which includes a rotating groove formed in the inner bottom wall of the main body, a screw rotatably connected in the rotating groove, a driven gear that meshes with the limiting plate fixedly connected to the screw, a mounting plate threadedly connected to the driven gear, and a brake component provided on the side of the mounting plate near the limiting plate.

[0017] Preferably, a limiting groove is formed on the side of the mounting plate near the limiting plate, a second spring is fixedly connected in the limiting groove, a limiting part is fixedly connected to the other end of the second spring, a brake plate is integrally formed in the limiting part, and the brake plate is set through the limiting groove, and a deceleration pad is glued and fixedly connected to the end of the brake plate away from the second spring.

[0018] Preferably, it also includes an operating lever for operation, and the cross-sectional diameter of the operating lever is smaller than the cross-sectional diameter of the lifting rod.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This invention utilizes the coordinated operation of a lifting assembly, an operating assembly, a cooperating assembly, and an operating lever. Before the lever is in the first position, the monitoring camera body automatically falls under gravity. When the lever is in the second position, the lifting assembly can raise the monitoring camera body to its original working position. When the lever is in the third position, it automatically resets to the initial position, and the lifting assembly stops raising the monitoring camera body. The entire process is operated using an operating lever, eliminating the need for a ladder to disassemble the monitoring camera body, avoiding the dangers of climbing, and improving safety.

[0021] 2. In this invention, as the limiting disc rotates with the drum, it also engages with the driven gear, causing the screw to rotate. Under the condition of sliding with the rotating groove, the mounting plate drives the mounting plate and the brake component to move towards the limiting disc, gradually increasing the compression of the second spring and the compression of the deceleration pad, thereby gradually increasing the friction of the deceleration pad on the limiting disc, improving braking performance. When the traction rope is fully released, the dynamic potential energy of the monitoring camera body also tends to zero, avoiding the situation of the connection end breaking due to gravitational acceleration, and improving service life.

[0022] 3. By setting up a drum, the lifting rod is raised when the elastic connecting structure is about to reach the bottom groove. Due to the elastic setting of the adapting plate and the ring part, the movement path of the traction rope is extended. After the ring part reaches the position, the monitoring camera body also reaches the original working position, and the adapting plate will continue to be pulled upward, thereby making up for the time difference and avoiding the rotating motor from jamming. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2This is a frontal cross-sectional view of the structure of the present invention;

[0025] Figure 3 This is a three-dimensional structural schematic diagram of the moving part of the present invention;

[0026] Figure 4 for Figure 2 Enlarged structural diagram at point A;

[0027] Figure 5 This is a frontal cross-sectional view of the connection between the mounting plate and the brake component of the present invention.

[0028] In the diagram: 1. Main body; 2. Lifting assembly; 21. First support plate; 22. Second support plate; 23. Rotating shaft; 24. Rotary motor; 25. Limiting disc; 26. Drum; 27. Traction rope; 28. Surveillance camera body; 29. ​​Elastic connection structure; 3. Operating assembly; 31. Synchronizing rod; 32. Engaging tooth arc; 33. Lifting rod; 34. Limiting ring; 35. First spring; 4. Mating assembly; 41. Pin; 42. Moving part; 421. First inclined plane; 422. Second inclined plane; 423. Third inclined plane; 424. First slot; 425. Second slot; 426. Return slot; 427. One-way door; 428. First contact switch; 43. Elastic telescopic rod; 5. Operating lever; 6. Speed ​​limiting component; 61. Rotating slot; 62. Screw; 63. Driven gear; 64. Mounting plate; 641. Limiting slot; 642. Second spring; 65. Brake component; 651. Brake plate; 652. Limiting part; 653. Speed ​​reduction pad. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Reference Figures 1 to 5 A sensor camera mounting and dismounting structure for a glass door includes a main body 1, which is installed on the glass door and has a box-like structure; a lifting assembly 2, an operating assembly 3, and a cooperating assembly 4 installed inside the main body 1, which are used to lift the monitoring camera body 28, fix the monitoring camera body 28, and facilitate operation by technicians, respectively.

[0031] Specifically, the lifting assembly 2 includes a drum 26 and limiting discs 25 coaxially fixed to both ends of the drum 26. The drum 26 is wound with a traction rope 27, the other end of which is divided into multiple strands arranged in a circular array to make the monitoring camera body 28 more stable under force. The monitoring camera body 28 is connected to the drum 26 via an elastic connection structure 29. The monitoring camera body 28 is an existing product. The drum 26 can wind the traction rope 27 along its own axis to drive the monitoring camera body 28 to rise. The following structure is used to achieve the rotation of the drum 26 around its own axis: The lifting assembly 2 also includes a first support plate 21 and a second support plate 22 vertically fixed to the inner wall of the main body 1. The two ends of the rotating shaft 23 are rotatably connected to the first support plate 21 and the second support plate 22, respectively. A rotary motor 24 for driving the rotating shaft 23 is fixedly installed on one side of the first support plate 21. The limiting discs 25 drive the drum 26 and the limiting discs 25 to rotate through the rotating shaft 23. One of the limiting discs 25 is a gear structure.

[0032] To compensate for the time difference caused by the pin 41 returning from the return slot 426 to the initial position and to prevent the rotary motor 24 from continuing to work and causing a system crash, an additional elastic connection structure 29 is specifically designed. The elastic connection structure 29 includes an annular member that is fixedly connected to the monitoring camera body 28 with bolts. Any radial section of the annular member is L-shaped. An adaptation plate is elastically provided inside the annular member, that is, a slot is provided that is slidably connected to the adaptation plate. A spring is also provided. When the traction rope 27 is fully released and the monitoring camera body 28 is at its lowest point, the spring is in a slightly compressed state. The lower end of the traction rope 27 is divided into multiple ends and fixedly connected to the adaptation plate. The lower end of the main body 1 is provided with a bottom groove for accommodating the elastic connection structure 29.

[0033] It also includes an operating lever 5 for operation, and the cross-sectional diameter of the operating lever 5 is smaller than the cross-sectional diameter of the lifting rod 33. The lower end of the lifting rod 33 extends to the bottom of the main body 1, leaving sufficient length for operation. The lifting rod 33 is lifted by the operating lever 5. For ease of operation, a plate with a larger area can also be fixedly connected to the lower end of the lifting rod 33.

[0034] Specifically, the operating component 3 includes a vertically penetrating lifting rod 33 that is elastically arranged. The upper end of the lifting rod 33 is fixedly connected to a synchronizing rod 31, and the lower end of the synchronizing rod 31 is fixedly connected to a meshing tooth arc 32 that meshes with one of the limiting discs 25. The position is fixed through the meshing of the tooth. The operating component 3 also includes a limiting ring 34 fixedly connected to the lifting rod 33. The lifting rod 33 is sleeved with a first spring 35. The two ends of the first spring 35 are fixedly connected to the limiting ring 34 and the inner bottom end of the main body 1, respectively. The synchronizing rod 31 is slidably sleeved on the second support plate 22. The lifting rod 33 has the mechanical energy required for reset by setting the first spring 35.

[0035] Specifically, the cooperating component 4 includes a pin 41 fixedly connected to the lifting rod 33 and a moving part 42 cooperating with the pin 41. The moving part 42 is provided with a first position, a second position and a third position from bottom to top. The first position is the position where the engagement tooth arc 32 is separated from the limiting plate 25. The second position is the position for starting the rotary motor 24. The third position is the position where the pin 41 resets to the starting point. Correspondingly, when the pin 41 is in the first position, the engagement tooth arc 32 is separated from the limiting plate 25, and the monitoring camera body 28 can fall freely. When the pin 41 is in the second position, the drum 26 rotates to wind the traction rope 27 to drive the monitoring camera body 28 to the camera position. When the pin 41 reaches the third position, the pin 41 can be passively reset to the initial position, and the engagement tooth arc 32 engages with the limiting plate 25.

[0036] The cooperating component 4 also includes two elastic telescopic rods 43 fixed to the inner sidewall of the main body 1. The telescopic ends of the two elastic telescopic rods 43 are fixedly connected to the moving part 42. The elastic telescopic rods 43 are telescopic rods with built-in springs, which are common in the prior art. The moving part 42 forms a first inclined surface 421, a second inclined surface 422, and a third inclined surface 423 with the same slope from bottom to top. The second inclined surface 422 and the third inclined surface 423 have the same length, and the length of the first inclined surface 421 is greater than the length of the second inclined surface 422. That is, the pin 41 is initially maintained in the horizontal square box and does not go beyond the first and second positions. The purpose is to set the return groove 426 to allow a certain horizontal width. The upper end of the first inclined surface 421 is adjacent to a first L-shaped straight surface, and the upper end of the second inclined surface 422 is adjacent to a second L-shaped straight surface. The first L-shaped straight surface and the second inclined surface 422 form a first slot 424, which is the first position. The second L-shaped straight surface and the third inclined surface 423 form a second slot 425, which is the second position. The third position is formed on the third inclined surface 423. An L-shaped return passage is provided at the third position. A one-way door 427 is installed at the lower end of the return passage. The one-way door 427 can only deflect in the direction away from the return slot 426 and cannot deflect in the opposite direction. Therefore, the pin 41 can only move from top to bottom within the one-way door 427 and cannot move from bottom to top. It is worth mentioning that the moving part 42 is located on one side of the pin 41, so they can cooperate with each other. A second contact switch is fixedly connected to the lower end of the one-way door 427, which is the power off switch for the rotary motor 24.

[0037] Furthermore, to prevent the kinetic energy of the surveillance camera body 28 from becoming too large under the influence of gravity, the present invention provides a speed limiting component 6. The speed limiting component 6 includes a rotating groove 61 formed in the inner bottom wall of the main body 1. A screw 62 is rotatably connected in the rotating groove 61. A passive gear 63 that meshes with the limiting disk 25 is fixedly connected to the screw 62. A mounting plate 64 is threadedly connected to the passive gear 63. A brake component 65 is provided on the side of the mounting plate 64 near the limiting disk 25. During the descent of the surveillance camera body 28, the passive gear 63 is driven to rotate, thereby driving the mounting plate 64 and the brake component 65 to move towards the limiting disk 25, so that the brake component 65 decelerates the limiting disk 25 and converts the kinetic energy into heat energy for consumption.

[0038] Specifically, a limiting groove 641 is provided on the side of the mounting plate 64 near the limiting disc 25. A second spring 642 is fixedly connected in the limiting groove 641. The other end of the second spring 642 is fixedly connected to a limiting part 652. A brake plate 651 is integrally formed in the limiting part 652 and is set through the limiting groove 641. Through the cooperation of the brake plate 651, the limiting part 652 and the second spring 642, the friction / deceleration time between the deceleration pad 653 and the limiting disc 25 is extended, the friction force is gradually increased, and the deceleration is more stable. The deceleration pad 653, made of rubber material, is glued and fixedly connected to the end of the brake plate 651 away from the second spring 642. The friction coefficient of the rubber material is larger than that of other materials.

[0039] The working principle of this invention is as follows:

[0040] 1. When the surveillance camera body 28 is in normal use, the pin 41 is in contact with the one-way door 427 in the initial position, the rotary motor 24 is in the stopped state, and the drum 26 is in the meshing state with the engagement tooth arc 32, thereby fixing the limit plate 25 and the drum 26.

[0041] 2. When the main body of the surveillance camera 28 needs to be disassembled for inspection or repair, hold the operating lever 5 and align it with the lifting rod 33 and push it upward. Due to the fact that the lifting rod 33 can only move in the vertical direction and the one-way door 427 is set in one direction, the pin 41 cannot enter the return groove 426. The pin 41 pushes the moving part 42 towards the elastic telescopic rod 43 by squeezing the first inclined surface 421. The elastic telescopic rod 43 is forced to shorten until it passes the uppermost end of the first inclined surface 421 and is locked into the first slot 424 / first position under the elastic force of the elastic telescopic rod 43. The technician will hear a click, which makes it easy to know that the first position has been reached without manually maintaining the position of the lifting rod 33. The meshing tooth arc 32 first separates from the limit plate 25. The main body of the surveillance camera 28 falls vertically under the action of gravity and the traction of the traction rope 27. The traction rope 27 guides the through the hole on the main body 1 and pulls the camera. The multi-strand rope at the lower end of the traction rope 27 prevents the camera body 28 from falling off course. Due to the issue of gravitational acceleration, without restrictions, the speed of the camera body 28 may reach its peak even after the traction rope 27 is fully released, and the tension at the lower end of the traction rope 27 may be too high, potentially causing the connection to break. Therefore, a speed limiting component 6 is set up. As the limiting disc 25 rotates with the drum 26, it also engages with the driven gear 63, causing the screw 62 to rotate. Under the condition of sliding in the limiting groove 61, the mounting plate 64 and the brake component 65 move towards the limiting disc 25, gradually increasing the compression of the second spring 642 and the compression of the deceleration pad 653, thereby gradually increasing the friction of the deceleration pad 653 on the limiting disc 25 and improving braking performance. When the traction rope 27 is fully released, the kinetic energy of the camera body 28 also tends to zero.

[0042] 3. When the surveillance camera body 28 reaches its lowest point, it remains at a certain height above the bottom surface to facilitate technicians' disassembly and assembly. When it is necessary to return the surveillance camera body 28 to its original working position, the lifting rod 33 is raised further according to step 2. The pin 41 presses against the second inclined surface 422, thereby generating a component force on the moving part 42 towards the elastic telescopic rod 43. The elastic telescopic rod 43 is forced to shorten until the pin 41 passes the uppermost end of the second inclined surface 422. Under the elastic force recovery of the elastic telescopic rod 43, the moving part 42 causes the pin 41 to engage in the second slot 425 / second position, and the pin 41 contacts the first contact switch 428. This controls the operation of the rotary motor 24, which drives the rotating shaft 23 to rotate the drum 26 and the limiting plate 25. The limiting plate 25 continuously winds the traction rope 27 to pull the monitoring camera body 28 upward. When the elastic connection structure 29 is about to reach the bottom groove position, the technician continues to lift the lifting rod 33 so that the pin 41 presses against the third inclined surface 423. Similarly, the elastic telescopic rod 43 will also shorten. When the pin 41 reaches the third position, it moves along the return groove 426 under the elastic force of the elastic telescopic rod 43, pushing the one-way door 427 to deflect and return to the initial position. The rotary motor 24 is stopped by the pin 41 contacting the second contact switch. It should be noted that the rotary motor 24 does not stop during the reset time of the pin 41. In order to prevent the rotary motor 24 from jamming, the lifting rod 33 is raised when the elastic connection structure 29 is about to reach the bottom groove. On the other hand, due to the elastic setting of the adapting plate and the ring, the movement path of the traction rope 27 is extended. After the ring reaches the position, the monitoring camera body 28 also reaches the original working position, and the adapting plate will continue to be pulled upward to make up for the time difference.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A detachable structure for a sensor camera on a glass door, characterized in that: include The main body (1) is installed on the glass door and has a box-like structure; A lifting assembly (2) is installed inside the main body (1). The lifting assembly (2) includes a drum (26) and a limiting disc (25) coaxially fixedly connected to both ends of the drum (26). The drum (26) is wound with a traction rope (27). The other end of the traction rope (27) is connected to the monitoring camera body (28) through an elastic connection structure (29). The drum (26) can wind the traction rope (27) along its own axis to drive the monitoring camera body (28) to rise. An operating component (3) used in conjunction with the lifting component (2) includes a lifting rod (33) that is vertically inserted through the main body (1) and elastically set. The upper end of the lifting rod (33) is fixedly connected to a synchronizing rod (31), and the lower end of the synchronizing rod (31) is fixedly connected to a meshing tooth arc (32) that meshes with one of the limiting discs (25). A cooperating component (4) used in conjunction with the operating component (3) includes a pin (41) fixedly connected to the lifting rod (33) and a moving part (42) cooperating with the pin (41). The moving part (42) is provided with a first gear, a second gear and a third gear from bottom to top. When the pin (41) is in the first position, the engagement tooth arc (32) separates from the limiting plate (25), and the monitoring camera body (28) can fall freely. When the pin (41) is in the second position, the drum (26) rotates to wind the traction rope (27) to drive the monitoring camera body (28) to rise to the camera position. When the pin (41) reaches the third position, the pin (41) can be passively reset to the initial position, and the engagement tooth arc (32) engages with the limiting plate (25). It also includes a speed limiting component (6), which includes a rotating groove (61) formed in the bottom wall of the main body (1), a screw (62) rotatably connected in the rotating groove (61), a driven gear (63) meshing with the limiting disk (25) fixedly connected on the screw (62), a mounting plate (64) threadedly connected on the driven gear (63), and a brake component (65) provided on the side of the mounting plate (64) near the limiting disk (25); The mounting plate (64) has a limiting groove (641) on the side near the limiting plate (25). A second spring (642) is fixedly connected in the limiting groove (641). The other end of the second spring (642) is fixedly connected to a limiting part (652). The limiting part (652) is integrally formed with a brake plate (651), and the brake plate (651) is disposed through the limiting groove (641). A deceleration pad (653) is glued and fixedly connected to the end of the brake plate (651) away from the second spring (642).

2. The sensor camera detachment structure on the glass door according to claim 1, characterized in that: The lifting assembly (2) further includes a first support plate (21) and a second support plate (22) vertically fixed to the inner wall of the main body (1). The two ends of the rotating shaft (23) are rotatably connected to the first support plate (21) and the second support plate (22) respectively. A rotary motor (24) for driving the rotating shaft (23) is fixedly installed on one side of the first support plate (21).

3. The sensor camera detachment structure on the glass door according to claim 2, characterized in that: The operating component (3) also includes a limiting ring (34) fixedly connected to the lifting rod (33). The lifting rod (33) is covered with a first spring (35). The two ends of the first spring (35) are fixedly connected to the limiting ring (34) and the bottom of the main body (1), respectively. The synchronizing rod (31) is slidably sleeved on the second support plate (22).

4. The sensor camera detachment structure on the glass door according to claim 1, characterized in that: The mating assembly (4) further includes two elastic telescopic rods (43) fixed to the inner sidewall of the main body (1). The telescopic ends of the two elastic telescopic rods (43) are fixedly connected to the moving part (42). The moving part (42) forms a first inclined surface (421), a second inclined surface (422), and a third inclined surface (423) with the same slope from bottom to top. The second inclined surface (422) and the third inclined surface (423) have the same length, and the length of the first inclined surface (421) is greater than the length of the second inclined surface (422). The upper end of the first inclined surface (421) is adjacent to a first L-shaped straight surface, and the upper end of the second inclined surface (422) is adjacent to a second L-shaped straight surface. The first L-shaped straight surface and the second inclined surface (422) form a first slot (424), which is a first position. The second L-shaped straight surface and the third inclined surface (423) form a second slot (425), which is a second position. The third position is formed on the third inclined surface (423). An L-shaped return channel is provided at the third position. A one-way door (427) is installed at the lower end of the return channel. The one-way door (427) can only deflect in the direction away from the return slot (426). A second contact switch is fixedly connected to the lower end of the one-way door (427).

5. The sensor camera detachment structure on the glass door according to claim 4, characterized in that: The elastic connection structure (29) includes an annular member that is fixedly connected to the main body (28) of the surveillance camera by bolts, and any radial section of the annular member is L-shaped. An adaptation plate is elastically provided inside the annular member. The lower end of the traction rope (27) is divided into multiple ends and fixedly connected to the adaptation plate. The lower end of the main body (1) is provided with a bottom groove for accommodating the elastic connection structure (29).

6. The sensor camera detachment structure on the glass door according to claim 1, characterized in that: It also includes an operating lever (5) for operation, and the cross-sectional diameter of the operating lever (5) is smaller than the cross-sectional diameter of the lifting rod (33).

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