A camera lifting device

Abstract

The utility model discloses a camera elevating gear, include: pool body, the upper side of the wall of pool body is equipped with the lifting hole, the lifting cylinder is through the lifting hole, and the lifting cylinder can move along the up and down direction relative to pool body, the camera is established in the upper side of the inboard of lifting cylinder, the lifting drive component is connected with lifting cylinder transmission, and the lifting drive component can drive the lifting cylinder and move up and down to make the camera stretch out upwards higher than the lifting hole or descend to be lower than the lifting hole. When needing using the camera, the lifting drive component drives the lifting cylinder and the camera and rises upwards, and the camera can photograph the situation in the pool body after being higher than the lifting hole, and need not manual regulation, when not needing using the camera, the lifting drive component drives the lifting cylinder and the camera and falls downwards, and the camera can hide in the lower side of the lifting hole, and the camera is conveniently stored.

Description

Technical Field

[0001] This utility model relates to the field of intelligent bathroom equipment technology, and in particular to a camera lifting device. Background Technology

[0002] Currently, some smart bathtubs and swimming pools are equipped with cameras that record the conditions inside the tub or pool, providing functions such as security monitoring or smart interaction. However, most cameras are fixed to the upper side of the pool using brackets, requiring manual adjustment of the camera's height. Furthermore, storing the cameras is inconvenient when an insulation cover is needed over the pool. Utility Model Content

[0003] The main purpose of this utility model is to propose a camera lifting device, which aims to solve the technical problems in the prior art that require manual adjustment of the camera's vertical position and are inconvenient to store.

[0004] To achieve the above objectives, this utility model proposes a camera lifting device, comprising:

[0005] The pool body has lifting holes on the upper side of its wall.

[0006] A lifting cylinder passes through the lifting hole, and the lifting cylinder is able to move relative to the pool body in the vertical direction;

[0007] A camera is located on the upper side of the inner side of the lifting cylinder;

[0008] A lifting drive assembly is connected to the lifting cylinder in a transmission manner. The lifting drive assembly can drive the lifting cylinder to move up and down, so that the camera extends upward above the lifting hole or descends downward below the lifting hole.

[0009] A lifting hole is provided on the upper side of the pool wall. The lifting drive assembly can move the lifting cylinder and camera up and down through the lifting hole. When the camera is needed, the lifting drive assembly moves the lifting cylinder and camera upward. After the camera is above the lifting hole, it can film the situation inside the pool. The height of the camera can be adjusted without manual adjustment. When the camera is not needed, the lifting drive assembly moves the lifting cylinder and camera downward. The camera can be hidden under the lifting hole for easy storage.

[0010] Preferably, the camera lifting device further includes an outer fixing cylinder, which is fixedly connected to the pool body. The outer fixing cylinder is located below the lifting hole, and the lifting cylinder is located inside the outer fixing cylinder. The outer fixing cylinder provides protection on the outside of the lifting cylinder.

[0011] Preferably, a sliding limiting ring is fixed at the upper end of the outer fixing cylinder, the lifting cylinder passes through the inner hole of the sliding limiting ring, and the inner wall of the sliding limiting ring protrudes from the inner side of the inner wall of the outer fixing cylinder so that a gap is formed between the outer side wall of the lifting cylinder and the inner side wall of the outer fixing cylinder.

[0012] The lifting cylinder passes through the inner hole of the sliding limit ring, which restricts the radial sway of the lifting cylinder. At the same time, the sliding limit ring can create a gap between the outer wall of the lifting cylinder and the inner wall of the outer fixed cylinder to prevent the lifting cylinder from contacting and rubbing against the outer fixed cylinder during lifting, thereby reducing friction and wear.

[0013] Preferably, the camera lifting device further includes an upper fixed base, which includes a fixed ring and a fixed sleeve located below the fixed ring. The fixed sleeve is inserted into the lifting hole, and the fixed ring is abutted and fixed to the upper side of the lifting hole. The upper end of the outer fixed cylinder and the sliding limiting ring are both located inside the fixed sleeve. An upper limit ring is provided on the inner sidewall of the fixed sleeve, and the upper limit ring is located above the sliding limiting ring and the outer fixed cylinder. A lower fixed base is fixedly connected to the pool body, and the lower side of the outer fixed cylinder and the lifting drive assembly are both fixedly connected to the lower fixed base.

[0014] The upper end of the outer fixing cylinder is fixed to the pool body through the upper fixing seat, and the lower end of the outer fixing cylinder is fixed to the pool body through the lower fixing seat. The fixing structure is simple.

[0015] Preferably, the camera lifting device further includes a sealing ring and a pressure ring. The sealing ring is disposed on the upper side of the fixed ring, and the inner ring of the sealing ring is in sealing contact with the outer wall of the lifting cylinder. The pressure ring is pressed on the upper side of the sealing ring, and a buckle is provided on the lower side of the pressure ring. The buckle is engaged and fixed with the outer circumference of the fixed ring.

[0016] The pressure ring secures the sealing ring to the upper side of the fixed ring. The inner ring of the sealing ring remains in contact with the outer wall of the lifting cylinder, providing waterproofing and dustproofing to prevent water and dust from entering between the lifting cylinder and the outer fixed cylinder and causing short circuits. The pressure ring is snapped into the fixed ring with a clip, facilitating its installation and removal.

[0017] Preferably, the lifting drive assembly includes a lead screw motion module and a control module. The lead screw motion module is located inside the outer fixed cylinder and the lifting cylinder, and the control module is located on the lower outer side of the outer fixed cylinder. The fixed end of the lead screw motion module is fixed relative to the outer fixed cylinder, and the moving end of the lead screw motion module is connected to the lifting cylinder. A wire passage space is provided between the lead screw motion module and the inner wall of the lifting cylinder. A spring wire is provided in the wire passage space. The upper end of the spring wire is electrically connected to the camera, and the lower end of the spring wire is fixed relative to the lower end of the outer fixed cylinder.

[0018] Preferably, the outer fixed cylinder is provided with a limiting slide groove extending in the vertical direction, and the outer side of the lifting cylinder is provided with a limiting slide post. The limiting slide post is located in the limiting slide groove to restrict the rotation of the lifting cylinder and keep the camera angle facing the middle of the pool. The structure is relatively simple.

[0019] Preferably, the camera lifting device further includes a sealing ring, which is fixed relative to the pool body. The sealing ring is located on the upper, lower, or inner side of the lifting hole, and the inner ring of the sealing ring is in sealing contact with the outer wall of the lifting cylinder. Maintaining contact between the inner ring of the sealing ring and the outer wall of the lifting cylinder serves to prevent water and dust from entering between the lifting cylinder and the outer fixed cylinder, thus preventing short circuits and other problems.

[0020] Preferably, the upper end of the wall of the pool body has an upper edge face, and a groove is provided on the upper edge face. The lifting hole is located at the bottom of the groove, and the upper end of the lifting cylinder can be lowered below the upper edge face when descending.

[0021] When storing the camera, the upper end of the lifting cylinder is lowered below the upper edge. This allows the insulation cover to fit more closely to the pool body when the insulation cover is installed, thus improving the insulation effect.

[0022] Preferably, the wall of the pool body is provided with an opening, and a groove forming component is fixed in the opening. The groove is provided on the groove forming component, which can simplify the forming of the pool body.

[0023] Preferably, a mounting base is fixedly connected to the inner side of the upper side of the lifting cylinder, the camera is located inside the mounting base, the mounting base is provided with a camera hole, the camera is directly opposite the camera hole, and a top cover is fixedly connected to the upper end of the mounting base.

[0024] The mounting base is fixed inside the lifting cylinder, the camera is installed inside the mounting base, and the camera shoots outward through the camera hole. The top cover is fixed to the upper end of the mounting base to seal the upper end of the mounting base and the lifting cylinder.

[0025] Preferably, the camera hole and the head of the camera are tilted downwards, the head of the camera is inserted into the camera hole, the lower side of the upper cover is provided with a slot, the upper side of the camera body is disposed in the slot, and the slot and the camera hole together position the camera.

[0026] Preferably, the camera lifting device further includes an angle adjustment structure, which is connected to the camera and is used to adjust the tilt angle of the camera.

[0027] Preferably, the camera is rotatably connected to the top cover, the top cover is provided with an adjustment screw hole, an adjustment screw is provided in the adjustment screw hole, the end of the adjustment screw abuts against the camera, the abutment position of the camera and the adjustment screw is located on the lower side of the rotation axis of the camera and on the side away from the camera hole, and the adjustment screw can adjust the tilt angle of the camera.

[0028] Preferably, the upper side of the top cover is provided with an annular groove, the lower side of the annular groove is provided with a light-transmitting hole that runs vertically through it, a light-transmitting ring is provided inside the annular groove, and a light-emitting device is also provided inside the mounting base. The light-emitting device is positioned to match the light-transmitting hole, and the light-emitting device can emit light to make the light-transmitting ring light up.

[0029] The light-emitting device emits light when powered on. The light passes through the light-transmitting hole and shines on the light-transmitting ring, making the light-transmitting ring light up, which can create a lighting effect at the top of the lifting cylinder. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the present invention, showing the lifting cylinder and camera in the descending position;

[0032] Figure 2 This is a schematic diagram of the structure of the present invention, showing the lifting cylinder and camera in the rising position;

[0033] Figure 3 This is a partial exploded structural diagram of the sealing ring and pressure ring at the lifting hole position in this utility model;

[0034] Figure 4 This is a cross-sectional view of the camera lifting device of this utility model;

[0035] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0036] Figure 6 This is an exploded view of the mounting base and camera inside the lifting cylinder of this utility model.

[0037] Figure 7 This is a cross-sectional schematic diagram of an installation structure for the mounting base and camera inside the lifting cylinder of this utility model.

[0038] Figure 8 This is a schematic diagram of another mounting structure for the mounting base and camera inside the lifting cylinder of this utility model.

[0039] In the attached diagram: 1-pool body, 13-upper edge face, 14-groove, 2-lifting cylinder, 3-camera, 31-mounting base, 311-camera hole, 312-heat dissipation hole, 32-top cover, 321-slot, 322-ring groove, 33-light-transmitting ring, 34-adjusting screw, 35-rotating shaft, 4-lifting drive assembly, 41-screw motion module, 42-control module, 43-wire passage space, 44-spring wire, 5-outer fixing cylinder, 51-sliding limit ring, 52-limiting slide groove, 61-upper fixing base, 611-fixing ring, 612-fixing sleeve, 613-upper limit ring, 62-sealing ring, 63-pressure ring, 631-buckle, 64-lower fixing base.

[0040] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0042] It should be noted that if the embodiments of this utility model involve directional indicators, such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0043] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0044] like Figures 1 to 8As shown, a camera lifting device includes a pool body 1, a lifting cylinder 2, a camera 3, and a lifting drive assembly 4.

[0045] The pool body 1 can be a bathtub or a swimming pool. The pool body 1 is surrounded by walls. In the attached drawing, only a portion of the walls of the pool body 1 are shown. The upper side of the walls of the pool body 1 is provided with a lifting hole.

[0046] The lifting cylinder 2 passes through the lifting hole, and the lifting cylinder 2 can move vertically relative to the pool body 1. The camera 3 is located on the upper side of the inner side of the lifting cylinder 2.

[0047] The lifting drive assembly 4 is connected to the lifting cylinder 2, and the lifting drive assembly 4 can drive the lifting cylinder 2 to move up and down, so that the camera 3 extends upward above the lifting hole or descends downward below the lifting hole. When the camera 3 extends upward above the lifting hole, the camera 3 is aimed at the water storage area in the middle of the pool 1 to take pictures. When the camera 3 descends downward below the lifting hole, the lifting cylinder 2 and the camera 3 are separated from the water storage area in the middle of the pool 1 by the wall.

[0048] A lifting hole is provided on the upper side of the wall of pool 1. The lifting drive assembly 4 can drive the lifting cylinder 2 and camera 3 to move up and down through the lifting hole. When camera 3 is needed, the lifting drive assembly 4 drives the lifting cylinder 2 and camera 3 to rise, as shown in the figure. Figure 2 Once the camera 3 is positioned above the lifting hole, it can capture images of the area inside the pool 1. The height of the camera 3 is adjustable without manual intervention. When the camera 3 is not in use, the lifting drive assembly 4 lowers the lifting cylinder 2 and the camera 3. Figure 1 The camera 3 can be hidden under the lifting hole for easy storage. The lifting cylinder 2 and the camera 3 do not occupy or occupy little space on the upper side of the pool body 1.

[0049] In some specific embodiments, the camera lifting device further includes an outer fixing cylinder 5, which is fixedly connected to the pool body 1. The outer fixing cylinder 5 is located below the lifting hole, and the lifting cylinder 2 is located inside the outer fixing cylinder 5. The outer fixing cylinder 5 provides protection on the outside of the lifting cylinder 2.

[0050] Furthermore, referring to Figure 3 A sliding limiting ring 51 is fixed at the upper end of the outer fixed cylinder 5. The lifting cylinder 2 passes through the inner hole of the sliding limiting ring 51. The inner wall of the sliding limiting ring 51 protrudes from the inner side of the inner wall of the outer fixed cylinder 5. That is, the diameter of the inner wall of the sliding limiting ring 51 is smaller than the diameter of the inner wall of the outer fixed cylinder 5, so that a gap is formed between the outer wall of the lifting cylinder 2 and the inner wall of the outer fixed cylinder 5.

[0051] The lifting cylinder 2 passes through the inner hole of the sliding limit ring 51, which restricts the radial sway of the lifting cylinder 2. Simultaneously, the sliding limit ring 51 creates a gap between the outer wall of the lifting cylinder 2 and the inner wall of the outer fixed cylinder 5, preventing the lifting cylinder 2 from contacting and rubbing against the outer fixed cylinder 5 during lifting. This reduces friction and wear, and facilitates replacement of the sliding limit ring 51 when it becomes worn. Preferably, the outer fixed cylinder 5 and the lifting cylinder 2 are made of aluminum, and the sliding limit ring 51 is made of plastic. The sliding contact between the sliding limit ring 51 and the lifting cylinder 2 reduces friction.

[0052] Furthermore, referring to Figure 3 and Figure 5 The camera lifting device also includes an upper fixed seat 61, which includes a fixed ring 611 and a fixed sleeve 612 located on the lower side of the fixed ring 611. The fixed sleeve 612 is inserted into the lifting hole, and the fixed ring 611 is abutted and fixed to the upper side of the lifting hole. The upper end of the outer fixed cylinder 5 and the sliding limit ring 51 are both located on the inner side of the fixed sleeve 612. An upper limit ring 613 is provided on the inner side wall of the fixed sleeve 612. The upper limit ring 613 is located on the upper side of the sliding limit ring 51 and the outer fixed cylinder 5. A lower fixed seat 64 is fixedly connected to the pool body 1. The lower side of the outer fixed cylinder 5 and the lifting drive assembly 4 are both fixedly connected to the lower fixed seat 64.

[0053] The fixing ring 611 of the upper fixing seat 61 abuts and is fixed to the upper surface of the lifting hole. The upper end of the outer fixing cylinder 5 and the sliding limiting ring 51 are both located inside the fixing sleeve 612 to limit the radial position of the upper end of the outer fixing cylinder 5 and the sliding limiting ring 51. The upper limit ring 613 of the fixing sleeve 612 limits the upper position of the outer fixing cylinder 5 and the sliding limiting ring 51. The lower side of the outer fixing cylinder 5 is fixed in position by the lower fixing seat 64. The upper end of the outer fixing cylinder 5 is fixed to the pool body 1 by the upper fixing seat 61, and the lower end of the outer fixing cylinder 5 is fixed to the pool body 1 by the lower fixing seat 64. The fixing structure is simple. The fixing ring 611 can be fixed to the pool body 1 by screws.

[0054] In some specific embodiments, the camera lifting device further includes a sealing ring 62, which is fixed relative to the pool body 1. The sealing ring 62 is located on the upper, lower, or inner side of the lifting hole, and the inner ring of the sealing ring 62 is in sealing contact with the outer wall of the lifting cylinder 2. Maintaining contact between the inner ring of the sealing ring 62 and the outer wall of the lifting cylinder 2 serves to prevent water and dust from entering between the lifting cylinder 2 and the outer fixed cylinder 5, thus preventing short circuits and other problems.

[0055] Furthermore, the camera lifting device also includes a pressure ring 63, a sealing ring 62 located on the upper side of the fixing ring 611, the inner ring of the sealing ring 62 sealingly abutting against the outer wall of the lifting cylinder 2, the pressure ring 63 pressing on the upper side of the sealing ring 62, and a buckle 631 provided on the lower side of the pressure ring 63, which engages and fixes with the outer circumference of the fixing ring 611. The pressure ring 63 fixes the sealing ring 62 to the upper side of the fixing ring 611, facilitating the assembly and fixation of the sealing ring 62. The pressure ring 63 engages with the fixing ring 611 via the buckle 631, facilitating the installation and disassembly of the pressure ring 63. The pressure ring 63 and the fixing ring 611 can also be fixed together by screws, or the pressure ring 63 can be fixed to the pool body 1.

[0056] In some specific embodiments, reference is made to Figure 4 The lifting drive assembly 4 includes a lead screw motion module 41 and a control module 42. The lead screw motion module 41 is located inside the outer fixed cylinder 5 and the lifting cylinder 2, and the control module 42 is located on the lower outer side of the outer fixed cylinder 5. The fixed end of the lead screw motion module 41 is fixed relative to the outer fixed cylinder 5, and the moving end of the lead screw motion module 41 is connected to the lifting cylinder 2. A wire passage space 43 is provided between the lead screw motion module 41 and the inner wall of the lifting cylinder 2. A spring wire 44 is provided in the wire passage space 43. The upper end of the spring wire 44 is electrically connected to the camera 3, and the lower end of the spring wire 44 is fixed relative to the lower end of the outer fixed cylinder 5. The spring wire 44 is located inside the outer fixed cylinder 5 and the lifting cylinder 2. The spring wire 44 is curved and wavy, and can elastically extend and retract with the up and down movement of the lifting cylinder 2 and the camera 3, making the wiring neater.

[0057] In some specific embodiments, the outer fixed cylinder 5 is provided with a limiting slide groove 52 extending in the vertical direction, and the outer side of the lifting cylinder 2 is provided with a limiting slide post, which can be a screw. The limiting slide post is located in the limiting slide groove 52 to restrict the rotation of the lifting cylinder 2 and keep the angle of the camera 3 facing the middle of the pool body 1. The structure is relatively simple.

[0058] In some specific embodiments, the upper end of the wall of the pool body 1 has an upper edge end face 13, and a groove 14 is provided on the upper edge end face 13. The lifting hole is located at the bottom of the groove 14, and the upper end of the lifting cylinder 2 can be lowered below the upper edge end face 13 when it descends.

[0059] When storing camera 3, the upper end of the lifting cylinder 2 is lowered below the upper edge 13. This way, when the heat preservation cover is set to cover the pool body 1 for heat preservation, the heat preservation cover and the pool body 1 can fit more closely, improving the heat preservation effect.

[0060] Furthermore, the wall of the pool body 1 is provided with an opening, and a groove forming component is fixed in the opening. The groove 14 is provided on the groove forming component, which simplifies the forming of the pool body 1. In some other embodiments, the position of the groove 14 can be integrally formed with the pool body 1.

[0061] In some specific embodiments, reference is made to Figure 6 An installation base 31 is fixedly connected to the inner side of the upper side of the lifting cylinder 2. The camera 3 is located inside the installation base 31. The installation base 31 is provided with a camera hole 311. The camera 3 is directly opposite the camera hole 311. An upper cover 32 is fixedly connected to the upper end of the installation base 31.

[0062] Mounting base 31 is fixed inside lifting cylinder 2. Camera 3 is installed inside mounting base 31, and camera 3 shoots outward through camera hole 311. Top cover 32 is fixed to the upper end of mounting base 31 to seal the upper end of mounting base 31 and lifting cylinder 2. The moving end of lead screw motion module 41 can be connected to mounting base 31. Heat dissipation holes 312 can be provided on mounting base 31 to facilitate the dissipation of heat generated by camera 3 during operation. A water-blocking lens is provided on the outside of camera hole 311 to prevent water from entering mounting base 31 and lifting cylinder 2 through camera hole 311.

[0063] The camera 3 can be installed in a fixed position within the mounting base 31, as shown in the reference. Figure 7 The camera hole 311 and the head of the camera 3 are tilted downwards. The head of the camera 3 is inserted into the camera hole 311. The lower side of the upper cover 32 is provided with a slot 321. The upper side of the body of the camera 3 is located in the slot 321. The slot 321 and the camera hole 311 together position the camera 3.

[0064] The camera 3 can also be mounted in the mounting base 31 using an adjustable angle mounting structure. The camera lifting device also includes an angle adjustment structure connected to the camera 3, which is used to adjust the tilt angle of the camera 3. Further, refer to... Figure 8 The camera 3 is rotatably connected to the upper cover 32. The upper cover 32 is provided with an adjustment screw hole, and an adjustment screw 34 is provided in the adjustment screw hole. The end of the adjustment screw 34 abuts against the camera 3. The abutment position between the camera 3 and the adjustment screw 34 is located on the lower side of the rotation shaft 35 of the camera 3 and on the side away from the camera hole 311. Rotating the adjustment screw 34 can adjust the tilt angle of the camera 3.

[0065] In some specific embodiments, the upper side of the cover 32 is provided with an annular groove 322, the lower side of the annular groove 322 is provided with a light-transmitting hole that runs vertically through it, a light-transmitting ring 33 is provided inside the annular groove 322, and a light-emitting device is also provided inside the mounting base 31. The light-emitting device is positioned to match the light-transmitting hole, and the light-emitting device can emit light to make the light-transmitting ring 33 light up.

[0066] The light-emitting device emits light when powered on. The light passes through the light-transmitting hole and shines on the light-transmitting ring 33, causing the light-transmitting ring 33 to light up, creating a lighting effect at the upper end of the lifting cylinder 2. The light-transmitting ring 33 can be snapped and fixed to the upper cover 32.

[0067] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A camera lifting device, characterized in that, include: The pool body (1) has a lifting hole on the upper side of the wall of the pool body (1); The lifting cylinder (2) passes through the lifting hole and is able to move relative to the pool body (1) in the vertical direction; The camera (3) is located on the upper side of the inner side of the lifting cylinder (2); The lifting drive assembly (4) is connected to the lifting cylinder (2) in a transmission manner. The lifting drive assembly (4) can drive the lifting cylinder (2) to move up and down so that the camera (3) extends upward above the lifting hole or descends downward below the lifting hole.

2. The camera lifting device as described in claim 1, characterized in that, The camera lifting device also includes an outer fixing cylinder (5), which is fixedly connected to the pool body (1). The outer fixing cylinder (5) is located on the lower side of the lifting hole, and the lifting cylinder (2) is located on the inner side of the outer fixing cylinder (5).

3. The camera lifting device as described in claim 2, characterized in that, The upper end of the outer fixed cylinder (5) is fixed with a sliding limiting ring (51). The lifting cylinder (2) passes through the inner hole of the sliding limiting ring (51). The inner wall of the sliding limiting ring (51) protrudes from the inner side of the inner wall of the outer fixed cylinder (5) so that a gap is formed between the outer wall of the lifting cylinder (2) and the inner wall of the outer fixed cylinder (5).

4. The camera lifting device as described in claim 3, characterized in that, The camera lifting device also includes an upper fixed seat (61), which includes a fixed ring (611) and a fixed sleeve (612) located on the lower side of the fixed ring (611). The fixed sleeve (612) is inserted into the lifting hole, and the fixed ring (611) is abutted and fixed on the upper side of the lifting hole. The upper end of the outer fixed cylinder (5) and the sliding limit ring (51) are both located on the inner side of the fixed sleeve (612). An upper limit ring (613) is provided on the inner side wall of the fixed sleeve (612). The upper limit ring (613) is located on the upper side of the sliding limit ring (51) and the outer fixed cylinder (5). A lower fixing seat (64) is fixedly connected to the pool body (1), and the lower side of the outer fixing cylinder (5) and the lifting drive assembly (4) are both fixedly connected to the lower fixing seat (64).

5. The camera lifting device as described in claim 4, characterized in that, The camera lifting device also includes a sealing ring (62) and a pressure ring (63). The sealing ring (62) is located on the upper side of the fixing ring (611). The inner ring of the sealing ring (62) is sealed and abuts against the outer wall of the lifting cylinder (2). The pressure ring (63) is pressed on the upper side of the sealing ring (62). The lower side of the pressure ring (63) is provided with a buckle (631). The buckle (631) is engaged and fixed with the outer periphery of the fixing ring (611).

6. The camera lifting device as described in claim 2, characterized in that, The lifting drive assembly (4) includes a lead screw motion module (41) and a control module (42). The lead screw motion module (41) is located inside the outer fixed cylinder (5) and the lifting cylinder (2). The control module (42) is located on the lower side of the outer fixed cylinder (5). The fixed end of the lead screw motion module (41) is fixed relative to the outer fixed cylinder (5). The moving end of the lead screw motion module (41) is connected to the lifting cylinder (2). A wire passage space (43) is provided between the lead screw motion module (41) and the inner wall of the lifting cylinder (2). A spring wire (44) is provided in the wire passage space (43). The upper end of the spring wire (44) is electrically connected to the camera (3). The lower end of the spring wire (44) is fixed relative to the lower end of the outer fixed cylinder (5).

7. The camera lifting device as described in claim 2, characterized in that, The outer fixed cylinder (5) is provided with a limiting slide groove (52) extending in the vertical direction, and the outer side of the lifting cylinder (2) is provided with a limiting slide post. The limiting slide post is located in the limiting slide groove (52) to restrict the rotation of the lifting cylinder (2).

8. The camera lifting device as described in claim 1, characterized in that, The camera lifting device also includes a sealing ring (62), which is fixed relative to the pool body (1). The sealing ring (62) is located on the upper, lower or inner side of the lifting hole, and the inner ring of the sealing ring (62) is sealed and abuts against the outer wall of the lifting cylinder (2).

9. The camera lifting device as described in claim 1, characterized in that, The upper end of the wall of the pool body (1) has an upper edge end face (13), and a groove (14) is provided on the upper edge end face (13). The lifting hole is located at the bottom of the groove (14), and the upper end of the lifting cylinder (2) can be lowered below the upper edge end face (13) when it descends.

10. The camera lifting device as described in claim 9, characterized in that, The wall of the pool body (1) is provided with an opening, and a groove forming component is fixed in the opening. The groove (14) is provided on the groove forming component.

11. The camera lifting device as described in claim 1, characterized in that, The upper inner side of the lifting cylinder (2) is fixedly connected to the mounting base (31), the camera (3) is located on the inner side of the mounting base (31), the mounting base (31) is provided with a camera hole (311), the camera (3) is directly opposite the camera hole (311), and the upper end of the mounting base (31) is fixedly connected to the top cover (32).

12. The camera lifting device as described in claim 11, characterized in that, The camera hole (311) and the head of the camera (3) are tilted downwards. The head of the camera (3) is inserted into the camera hole (311). The lower side of the upper cover (32) is provided with a slot (321). The upper side of the body of the camera (3) is located in the slot (321). The slot (321) and the camera hole (311) together position the camera (3).

13. The camera lifting device as described in claim 11, characterized in that, The camera lifting device also includes an angle adjustment structure, which is connected to the camera (3) and is used to adjust the tilt angle of the camera (3).

14. The camera lifting device as described in claim 13, characterized in that, The camera (3) is rotatably connected to the upper cover (32). The upper cover (32) is provided with an adjustment screw hole, and an adjustment screw (34) is provided in the adjustment screw hole. The end of the adjustment screw (34) abuts against the camera (3). The abutment position of the camera (3) and the adjustment screw (34) is located on the lower side of the rotation axis (35) of the camera (3) and on the side away from the camera hole (311). The adjustment screw (34) can adjust the tilt angle of the camera (3).

15. The camera lifting device as described in claim 11, characterized in that, The upper side of the cover (32) is provided with an annular groove (322), and the lower side of the annular groove (322) is provided with a light-transmitting hole that runs through the top and bottom. A light-transmitting ring (33) is provided in the annular groove (322), and a light-emitting device is also provided in the mounting base (31). The light-emitting device is matched with the position of the light-transmitting hole, and the light-emitting device can emit light to make the light-transmitting ring (33) light up.

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