A single lamp controller with posture detection function

Abstract

The present invention belongs to the technical field of single lamp controllers, and discloses a single lamp controller with a posture detection function, including a mounting base; a main control component, which is movably mounted on the top of the mounting base and can cooperate with a remote control device to control the light; a plug-in component, which is arranged on the top of the mounting base and the bottom of the main control component; and a shielding and sealing component. The present invention sets a fixed block, a card block and a pull block, and the fixed block corresponds to the inner walls on both sides of the top of the mounting base and the jack corresponds to the plug for insertion, thereby driving the first movable block and the mounting block as a whole downward to release the blocking effect of the card block and the pull block as a whole, and the inner wall at the bottom of the fixed block corresponds to the card block, and then the two pull blocks are pushed at the same time to drive the card block to pass through the fixed block towards each other and insert into the inner wall of the mounting base, and finally the fixed round block, the circuit board and the protective cover as a whole can be more firmly fixed on the top of the mounting base.

Description

Technical Field

[0001] The invention belongs to the technical field of single lamp controllers, in particular to a single lamp controller with a posture detection function. Background Art

[0002] A single lamp controller is a controller that can literally control each lamp. It is commonly used to control single lamps such as municipal street lamps LED lamps, high-pressure sodium lamps, and electrodeless lamps. Existing single lamp controllers are equipped with corresponding posture detection modules, through which the posture angle direction of the installed lamp can be detected to prevent tilting and sliding. The single lamp control is composed of a base and a main controller body. The base is wired and installed, and the main controller is electrically plugged in. However, the main controller is fixed by inserting a socket into the base hole. Such fixation is extremely poor. If installed on the side, the center of gravity will be biased toward the main controller. Once the light source tilts a little, it may fall and be damaged. Therefore, it needs to be improved. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides a single lamp controller with a posture detection function, which has the advantage of improving the fixing effect of the main controller plug-in base.

[0004] The invention can solve the problem that the existing main controller is directly plugged into the base and has poor fixing effect.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a single lamp controller with a posture detection function, comprising a mounting base;

[0006] The main control component is movably mounted on the top of the mounting base and can be used in conjunction with a remote control device to control the lighting;

[0007] A plug-in assembly is arranged on the top of the mounting base and the bottom of the main control assembly;

[0008] A shielding sealing component is arranged at the bottom of the outer surface of the fixed round block and the top of the outer surface of the mounting base;

[0009] The mounting mechanism is arranged on both sides of the bottom of the mounting base;

[0010] The reinforcement mechanism includes a fixing component, a pressing component, a plugging component, a limiting component and a linkage component;

[0011] The fixing assembly includes a fixing block, which is arranged on both sides of the bottom of the main control assembly. The inner wall of the mounting base is movably mounted on a clamping block on the inner side of the bottom of the fixing block. A pull block is arranged on the outer side of the clamping block. The outer end of the pull block passes through the fixing block and the mounting base in sequence. The fixing block is downwardly pushed so that the bottom is aligned with the clamping block as a whole, and then the pull block and the clamping block are inserted into the mounting base facing each other for fixing.

[0012] The main control component includes a fixed round block, a circuit board and a protective cover;

[0013] The fixed round block is movably mounted on the top of the mounting base, the circuit board is arranged on the top of the fixed round block, and the protective cover is arranged on the outer surface of the fixed round block and the circuit board and the bottom of the mounting base;

[0014] The installation mechanism includes an installation component and a flip component;

[0015] The mounting assembly includes a mounting shaft, a mounting plate and a mounting groove;

[0016] The installation shaft is arranged at the bottom of both sides of the installation base, the installation plate is movably sleeved on the outer surface of the installation shaft, and the installation groove is arranged inside the outer end of the installation plate;

[0017] The flip assembly includes an arc block and a second spring;

[0018] The arc block is arranged inside the mounting plate and outside the top of the mounting shaft, and the second spring is arranged between the inner side of the arc block and the surface of the mounting shaft;

[0019] The pressing assembly includes a first movable block, a mounting rod, a mounting block and a first spring;

[0020] Therefore, the first movable block is movably mounted on the inner wall of the mounting base and the bottom of the fixed block, the mounting rod is arranged inside the mounting base and outside the first movable block, the mounting block is arranged on the bottom of the outer side of the first movable block and the outer surface of the mounting rod, and the first spring is arranged between the bottom of the mounting block and the inner wall of the mounting base;

[0021] The plug-in assembly includes a second movable block and a fixed slot;

[0022] The second movable block is movably mounted at the bottom of the inner walls on both sides of the mounting base, the fixed slot is opened in the middle of the outer side of the mounting plate, and the size of the second movable block and the fixed slot are adapted;

[0023] The limiting component includes a slide groove and a slider;

[0024] The slide groove is provided inside the mounting base and on both sides of the second movable block, and the slider is provided on the top of both sides of the second movable block and on the inner wall of the slide groove;

[0025] The linkage assembly includes a movable slot, a rectangular slot, a fixed shaft, a linkage plate and a driving shaft;

[0026] The movable groove is opened in front of the bottom of the first movable block and behind the top of the second movable block, the rectangular groove is opened inside the mounting base and on both sides of the movable groove, the fixed shaft is arranged inside the mounting base and above the slide groove, the linkage plate is movably sleeved on the outer surface of the fixed shaft and the top and bottom ends extend into the movable groove, and the driving shaft is arranged inside the top and bottom ends of the linkage plate and on the inner wall of the rectangular groove.

[0027] Preferably, the plug assembly comprises a socket and a plug;

[0028] The jack is arranged in the middle of the top of the mounting base, and the plug is arranged at the bottom of the fixing round block and the inner wall of the jack.

[0029] Preferably, the shielding and sealing assembly comprises a protective shell, a limit block, a fixed circular plate, a sealing sleeve and a magnet;

[0030] The protective shell is movably mounted on the bottom of the outer surface of the protective cover, the limit block is arranged on the bottom of the inner side of the protective shell and the inner wall of the protective cover, the fixed circular plate is arranged on the outer surface of the mounting base and below the protective shell, the sealing sleeve is arranged between the bottom of the protective shell and the top of the fixed circular plate, and the magnet is arranged in the middle of both sides of the inner wall of the sealing sleeve.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention provides a fixed block, a clamping block and a pulling block. The fixed block can correspond to the inner walls on both sides of the top of the mounting base and the plug can be inserted into the jack, thereby driving the first movable block and the mounting block as a whole downward to release the blocking effect of the clamping block and the pulling block as a whole. The inner wall at the bottom of the fixed block corresponds to the clamping block, and then the two pulling blocks are pushed at the same time to drive the clamping block to pass through the fixed block towards each other and be inserted into the inner wall of the mounting base. Finally, the fixed round block, the circuit board and the protective cover as a whole can be more firmly fixed on the top of the mounting base.

[0033] The present invention provides a linkage plate, a pushing shaft and a second spring. First, when the mounting plate is stored in the inner walls on both sides of the bottom of the mounting base, it can prevent damage caused by collision during placement or movement. Then, when the first movable block and the mounting block are downward as a whole, the pushing shaft will be squeezed to drive the linkage plate to deflect. At this time, the pushing shaft below will drive the second movable block upward synchronously until the bottom of the second movable block is separated from the inner wall of the fixed slot at the top of the mounting plate, thereby releasing the fixing effect on the mounting plate. At this time, due to the elastic force of the second spring, the arc block and the mounting plate can be pushed to flip open by 90 degrees as a whole, so that they can be installed using the mounting plate and the mounting slot later.

[0034] The present invention provides a protective shell, a sealing sleeve and a magnet, and can push the protective shell downward as a whole so that the bottom of the sealing sleeve fits with the top of the fixed circular plate, and the magnet fits with the fixed circular plate. At this time, due to the mutual attraction between the fixed circular plate and the magnet, the protective shell and the sealing sleeve can be fixed as a whole on the top of the fixed circular plate, and the part where the fixed circular block, the circuit board, the protective cover and the mounting base are connected and installed can be blocked to prevent accidental opening. Due to the design of the sealing sleeve, the sealing effect can be improved to prevent external water from penetrating into the inner wall and causing a short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the present invention;

[0036] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0037] Figure 3 It is a schematic cross-sectional structural diagram of the base of the present invention;

[0038] Figure 4 for Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0039] Figure 5 for Figure 2 A schematic diagram of the local enlarged structure at B in the middle;

[0040] Figure 6 for Figure 3 Schematic diagram of the local enlarged structure at point C in the middle.

[0041] In the figure: 1. mounting base; 2. fixed round block; 3. circuit board; 4. protective cover; 5. jack; 6. plug; 7. fixed block; 8. clamping block; 9. pulling block; 10. first movable block; 11. mounting rod; 12. mounting block; 13. first spring; 14. second movable block; 15. slide groove; 16. slider; 17. movable groove; 18. rectangular groove; 19. fixed shaft; 20. linkage plate; 21. push shaft; 22. mounting shaft; 23. mounting plate; 24. mounting groove; 25. fixed slot; 26. arc block; 27. second spring; 28. protective shell; 29. ​​limit block; 30. fixed round plate; 31. sealing sleeve; 32. magnet. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figures 1 to 6 As shown, the present invention provides a single lamp controller with a posture detection function, comprising a mounting base 1;

[0044] A main control component, which is movably mounted on the top of the mounting base 1 and can be used in conjunction with a remote control device to control the light;

[0045] The plug-in assembly is arranged on the top of the mounting base 1 and the bottom of the main control assembly;

[0046] A shielding sealing component is arranged at the bottom of the outer surface of the fixed round block 2 and the top of the outer surface of the mounting base 1;

[0047] The mounting mechanism is arranged on both sides of the bottom of the mounting base 1;

[0048] The reinforcement mechanism includes a fixing component, a pressing component, a plugging component, a limiting component and a linkage component;

[0049] The fixing assembly includes a fixing block 7, which is arranged on both sides of the bottom of the main control assembly. The inner wall of the mounting base 1 is movably mounted on a card block 8 on the inner side of the bottom of the fixing block 7. A pull block 9 is arranged on the outer side of the card block 8. The outer end of the pull block 9 passes through the fixing block 7 and the mounting base 1 in sequence. The fixing block 7 is pushed downward so that the bottom is aligned with the card block 8 as a whole, and then the pull block 9 and the card block 8 are inserted into the mounting base 1 facing each other for fixing. The two fixing blocks 7 are positioned and inserted into the inner wall of the mounting base 1, thereby pushing the two first movable blocks 10 and the mounting block 12 downward until the two first movable blocks 10 release the blocking effect on the two card blocks 8 as a whole, and then the inner wall of the bottom of the fixing block 7 can be aligned with the inner end of the card block 8, and then the pull block 9 is pushed to drive the card block 8 to face each other, so that the card block 8 passes through the inner wall of the fixing block 7 and is inserted into the inner wall of the mounting base 1, so as to fix the fixing block 7 on the inner wall of the mounting base 1, and finally the fixing round block 2, the circuit board 3 and the protective cover 4 can be fixed on the top of the mounting base 1 as a whole;

[0050] The main control component includes a fixed round block 2, a circuit board 3 and a protective cover 4;

[0051] The fixed round block 2 is movably mounted on the top of the mounting base 1, the circuit board 3 is arranged on the top of the fixed round block 2, and the protective cover 4 is arranged on the outer surfaces of the fixed round block 2 and the circuit board 3 and the bottom of the mounting base 1;

[0052] The above solution is adopted: by providing a protective cover 4, through the design of the protective cover 4, the light source can be controlled by a remote device;

[0053] The installation mechanism includes an installation component and a flip component;

[0054] The mounting assembly includes a mounting shaft 22, a mounting plate 23 and a mounting groove 24;

[0055] The mounting shaft 22 is arranged at the bottom of both sides of the mounting base 1, the mounting plate 23 is movably sleeved on the outer surface of the mounting shaft 22, and the mounting groove 24 is opened inside the outer end of the mounting plate 23;

[0056] With the above solution: by providing the mounting plate 23 and the mounting slot 24, through the design of the mounting plate 23 and the mounting slot 24, the operator can install the entire device at the designated position of the light source through the mounting plate 23 and the mounting slot 24 and the bolts;

[0057] The flip assembly includes an arc block 26 and a second spring 27;

[0058] The arc block 26 is arranged inside the mounting plate 23 and outside the top of the mounting shaft 22, and the second spring 27 is arranged between the inner side of the arc block 26 and the surface of the mounting shaft 22;

[0059] The above solution is adopted: by providing the second spring 27, the elastic force of the second spring 27 can push the arc block 26 to drive the entire mounting plate 23 to flip 90 degrees;

[0060] The clamping assembly includes a first movable block 10, a mounting rod 11, a mounting block 12 and a first spring 13;

[0061] Therefore, the first movable block 10 is movably mounted on the inner wall of the mounting base 1 and the bottom of the fixed block 7, the mounting rod 11 is arranged inside the mounting base 1 and outside the first movable block 10, the mounting block 12 is arranged on the bottom of the outer side of the first movable block 10 and the outer surface of the mounting rod 11, and the first spring 13 is arranged between the bottom of the mounting block 12 and the inner wall of the mounting base 1;

[0062] The above solution is adopted: by providing the first spring 13, at this time, since the first spring 13 is in a compressed state, it will push the installation block 12 and the first spring 13 upward to press the fixing block 7 and the clamping block 8 as a whole;

[0063] The plug-in assembly includes a second movable block 14 and a fixed slot 25;

[0064] The second movable block 14 is movably mounted at the bottom of the inner walls on both sides of the mounting base 1, and the fixed slot 25 is opened in the middle of the outer side of the mounting plate 23, and the sizes of the second movable block 14 and the fixed slot 25 are adapted;

[0065] By adopting the above solution: by providing the second movable block 14 and the fixed slot 25, when the mounting plate 23 is flipped and stored on both sides of the mounting base 1, the second movable block 14 can be inserted downward into the inner wall of the fixed slot 25 to fix it as a whole;

[0066] The limiting assembly includes a slide groove 15 and a slider 16;

[0067] The slide groove 15 is opened inside the mounting base 1 and on both sides of the second movable block 14, and the sliders 16 are arranged on the top of both sides of the second movable block 14 and the inner wall of the slide groove 15;

[0068] The above solution is adopted: by providing the slide groove 15 and the slider 16, due to the cooperation between the slide groove 15 and the slider 16, the overall upward movement of the second movable block 14 can be well limited;

[0069] The linkage assembly includes a movable slot 17, a rectangular slot 18, a fixed shaft 19, a linkage plate 20 and a driving shaft 21;

[0070] The movable groove 17 is opened in front of the bottom of the first movable block 10 and behind the top of the second movable block 14, the rectangular groove 18 is opened inside the mounting base 1 and on both sides of the movable groove 17, the fixed shaft 19 is arranged inside the mounting base 1 and above the slide groove 15, the linkage plate 20 is movably sleeved on the outer surface of the fixed shaft 19 and the top and bottom ends extend into the movable groove 17, and the driving shaft 21 is arranged inside the top and bottom ends of the linkage plate 20 and the inner wall of the rectangular groove 18;

[0071] By adopting the above solution: by providing a driving shaft 21, when the first movable block 10 moves up and down as a whole, the top driving shaft 21 can move to drive the linkage plate 20 to flip, so that the bottom driving shaft 21 can drive the second movable block 14 to move up and down as a whole.

[0072] like Figure 2 As shown, the plug assembly includes a socket 5 and a plug 6;

[0073] The socket 5 is provided at the middle of the top of the mounting base 1 , and the plug 6 is arranged at the bottom of the fixing round block 2 and the inner wall of the socket 5 .

[0074] With the above solution, by providing the socket 5 and the plug 6 , the operator can insert the plug 6 into the socket 5 , so that the entirety of the fixed round block 2 , the circuit board 3 and the protective cover 4 are electrically connected to the mounting base 1 .

[0075] like Figure 2 and Figure 4 As shown, the shielding and sealing assembly includes a protective shell 28, a limit block 29, a fixed circular plate 30, a sealing sleeve 31 and a magnet 32;

[0076] The protective shell 28 is movably mounted at the bottom of the outer surface of the protective cover 4, the limit block 29 is arranged at the bottom of the inner side of the protective shell 28 and the inner wall of the protective cover 4, the fixed circular plate 30 is arranged on the outer surface of the mounting base 1 and below the protective shell 28, the sealing sleeve 31 is arranged between the bottom of the protective shell 28 and the top of the fixed circular plate 30, and the magnet 32 ​​is arranged in the middle of both sides of the inner wall of the sealing sleeve 31.

[0077] The above solution is adopted: by providing a magnet 32, since the fixed circular plate 30 is made of iron, there will be a mutual attraction between the magnet 32, and the magnet 32, the sealing sleeve 31 and the protective shell 28 can be fixed as a whole at the bottom of the fixed circular plate 30 to shield the pulling block 9.

[0078] The working principle and use process of the present invention:

[0079] When the operator needs to install the fixed round block 2, the circuit board 3 and the protective cover 4 as a whole on the top of the mounting base 1, the operator can first insert the socket 5 at the bottom of the fixed round block 2 and the fixed block 7 at the bottom of the protective cover 4 into the corresponding socket 5 and the inner walls on both sides of the mounting base 1 respectively. At this time, the fixed block 7 will push the first movable block 10 and the mounting block 12 as a whole downward, and the first spring 13 is compressed, and then the inner wall of the fixed block 7 is opposite to the clamping block 8. Then, the two pulling blocks 9 can drive the clamping block 8 as a whole to move toward each other until the two clamping blocks 8 pass through the fixed block 7 and are inserted into the inner wall of the mounting base 1, so that the fixed block 7 as a whole can be clamped and fixed, and finally the fixed round block 2, the circuit board 3 and the protective cover 4 as a whole are fixedly installed on the top of the mounting base 1.

[0080] Afterwards, the protective shell 28 can be pushed downward as a whole, so that the bottom of the sealing sleeve 31 is released from the fixed circular plate 30, and the magnet 32 ​​is in contact with the top of the fixed circular plate 30 and adsorbed, and finally the protective shell 28 is fixed as a whole, so that the pull block 9 can be shielded to prevent accidental contact with external force, and the sealing effect of the connection between the protective cover 4 and the mounting base 1 is improved to prevent water from entering and causing damage.

[0081] Finally, since the first movable block 10 is moved downward as a whole, the driving shaft 21 will be driven to deflect the linkage plate 20, and the driving shaft 21 at the bottom of the linkage plate 20 will pull the second movable block 14 to move upward as a whole until the bottom of the second movable block 14 is separated from the fixing slot 25, thereby releasing the fixing effect of the mounting plate 23 as a whole. Finally, due to the elastic force of the second spring 27, the arc block 26 can be pushed to drive the two mounting plates 23 to flip ninety degrees respectively, and then the device can be installed as a whole at the designated position of the light source by using the combination of bolts and the mounting slots 24.

[0082] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0083] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single lamp controller with posture detection function, characterized in that: including a mounting base (1); A main control component, which is movably mounted on the top of the mounting base (1) and can be used in conjunction with a remote control device to control the lighting; A plug-in assembly is arranged on the top of the mounting base (1) and the bottom of the main control assembly; A shielding sealing component is arranged at the bottom of the outer surface of the fixed round block (2) and the top of the outer surface of the mounting base (1); A mounting mechanism is arranged on both sides of the bottom of the mounting base (1); The reinforcement mechanism includes a fixing component, a pressing component, a plugging component, a limiting component and a linkage component; The fixing assembly comprises a fixing block (7) which is arranged on both sides of the bottom of the main control assembly; the inner wall of the mounting base (1) is movably mounted on a clamping block (8) on the inner side of the bottom of the fixing block (7); a pull block (9) is arranged on the outer side of the clamping block (8); the outer end of the pull block (9) passes through the fixing block (7) and the mounting base (1) in sequence; the fixing block (7) is moved downward so that the bottom is aligned with the clamping block (8) as a whole, and then the pull block (9) and the clamping block (8) are inserted into the mounting base (1) facing each other for fixing; The main control component comprises a fixed round block (2), a circuit board (3) and a protective cover (4); The fixed round block (2) is movably mounted on the top of the mounting base (1), the circuit board (3) is arranged on the top of the fixed round block (2), and the protective cover (4) is arranged on the outer surfaces of the fixed round block (2) and the circuit board (3) and the bottom of the mounting base (1); The installation mechanism includes an installation component and a flip component; The mounting assembly comprises a mounting shaft (22), a mounting plate (23) and a mounting groove (24); The mounting shaft (22) is arranged at the bottom of both sides of the mounting base (1), the mounting plate (23) is movably sleeved on the outer surface of the mounting shaft (22), and the mounting groove (24) is opened inside the outer end of the mounting plate (23); The flip assembly comprises an arc block (26) and a second spring (27); The arc block (26) is arranged inside the mounting plate (23) and outside the top of the mounting shaft (22), and the second spring (27) is arranged between the inner side of the arc block (26) and the surface of the mounting shaft (22); The pressing assembly comprises a first movable block (10), a mounting rod (11), a mounting block (12) and a first spring (13); The first movable block (10) is movably mounted on the inner wall of the mounting base (1) and the bottom of the fixed block (7); the mounting rod (11) is arranged inside the mounting base (1) and outside the first movable block (10); the mounting block (12) is arranged on the bottom of the outer side of the first movable block (10) and the outer surface of the mounting rod (11); and the first spring (13) is arranged between the bottom of the mounting block (12) and the inner wall of the mounting base (1); The plug-in assembly comprises a second movable block (14) and a fixed slot (25); The second movable block (14) is movably mounted at the bottom of the inner walls on both sides of the mounting base (1), the fixed slot (25) is opened in the middle of the outer side of the mounting plate (23), and the sizes of the second movable block (14) and the fixed slot (25) are adapted to each other; The limiting assembly comprises a slide groove (15) and a slider (16); The slide groove (15) is provided inside the mounting base (1) and on both sides of the second movable block (14), and the sliding block (16) is provided on the top of both sides of the second movable block (14) and on the inner wall of the slide groove (15); The linkage assembly comprises a movable groove (17), a rectangular groove (18), a fixed shaft (19), a linkage plate (20) and a driving shaft (21); The movable groove (17) is formed in front of the bottom of the first movable block (10) and behind the top of the second movable block (14); the rectangular groove (18) is formed inside the mounting base (1) and on both sides of the movable groove (17); the fixed shaft (19) is arranged inside the mounting base (1) and above the slide groove (15); the linkage plate (20) is movably sleeved on the outer surface of the fixed shaft (19) and the top and bottom ends extend into the movable groove (17); the driving shaft (21) is arranged inside the top and bottom ends of the linkage plate (20) and on the inner wall of the rectangular groove (18).

2. The single lamp controller with posture detection function according to claim 1, characterized in that: The plug-in assembly comprises a socket (5) and a plug (6); The socket (5) is opened in the middle of the top of the mounting base (1), and the plug (6) is arranged at the bottom of the fixed round block (2) and the inner wall of the socket (5).

3. The single lamp controller with posture detection function according to claim 1, characterized in that: The shielding and sealing assembly comprises a protective shell (28), a limit block (29), a fixed circular plate (30), a sealing sleeve (31) and a magnet (32); The protective shell (28) is movably mounted on the bottom of the outer surface of the protective cover (4); the limit block (29) is arranged at the bottom of the inner side of the protective shell (28) and the inner wall of the protective cover (4); the fixed circular plate (30) is arranged on the outer surface of the mounting base (1) and below the protective shell (28); the sealing sleeve (31) is arranged between the bottom of the protective shell (28) and the top of the fixed circular plate (30); and the magnet (32) is arranged in the middle of both sides of the inner wall of the sealing sleeve (31).

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