Monitoring camera device with protection structure

Abstract

The invention relates to the technical field of protection, and discloses a monitoring camera device with a protection structure, the monitoring camera device comprises a protection shell, the left and right sides of the protection shell are both provided with circular holes, the monitoring camera device also comprises a reset mechanism, the reset mechanism comprises a bent block, the bottom of the bent block is fixedly connected with the top of the protection shell, and the bent block is fixedly connected with the top of the protection shell. The bottom of the inner wall of the bent block is fixedly connected with a first sliding rod, the outer wall of the lower end of the first sliding rod is sleeved with a first spring, the top of the first spring is fixedly connected with a pressing plate, and the first sliding rod penetrates through the pressing plate and is in sliding connection with the pressing plate. By arranging a pressing structure, when a pressing plate moves downwards, a pulling rod can be pulled to move by virtue of the downward moving distance of the pressing plate, so that the rotating angle of a flow guide plate can be accurately adjusted, and by virtue of the design, when the flow guide plate faces different rainfall capacities, the rotating angle can be flexibly adjusted; and the erosion of rainwater is effectively blocked.

Description

Technical Field

[0001] The present invention relates to the field of protection technology, and in particular to a monitoring camera device with a protection structure. Background Art

[0002] Surveillance camera devices with protective structures are designed to protect the camera devices and maintain their normal operation under complex or harsh environmental conditions. Such devices usually integrate multiple protective elements to ensure the stability, safety and durability of the camera unit.

[0003] The patent application with application number CN202121519208.6 discloses a monitoring camera device with a protective structure, which includes a lower outer shell, an upper outer shell, a front panel, a camera unit, a signal processing module and a signal transmission module. A sealing assembly is provided at the connection position of the lower outer shell and the upper outer shell, and the sealing assembly is composed of a sealing strip and a sealing protrusion; a monitoring camera device composed of a lower outer shell, an upper outer shell, a front panel, a camera unit, a signal processing module and a signal transmission module is provided.

[0004] Existing surveillance cameras have obvious defects in windy and rainy weather conditions. When wind and rain come, the wind will cause rain to blow obliquely onto the lens of the surveillance camera. Once the lens is covered with rain, the captured image will be blurred, which greatly affects the normal use of the surveillance camera and greatly reduces its protective performance. This situation may cause the loss of key information in the surveillance image. It is necessary to improve the surveillance camera to enhance its stability and reliability in windy and rainy weather to ensure that it can still capture clearly and accurately in harsh environments. Summary of the invention

[0005] In view of the deficiencies of the prior art, an object of the present invention is to provide a monitoring camera device with a protective structure to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a monitoring camera device with a protective structure, comprising a protective shell, wherein circular holes are provided on both sides of the protective shell, and further comprising: A reset mechanism, wherein the reset mechanism comprises a bent block, the bottom of the bent block is fixedly connected to the top of the protective shell, the bottom of the inner wall of the bent block is fixedly connected to a first sliding rod, the outer wall of the lower end of the first sliding rod is sleeved with a first spring, the top of the first spring is fixedly connected to a pressing plate, the first sliding rod penetrates the pressing plate and is slidably connected thereto, the left and right sides of the pressing plate are in contact with the bent block, the bottom of the left and right sides of the pressing plate are rotatably connected to pull rods through a rotating shaft, the front of the protective shell is rotatably connected to a guide plate through a rotating shaft, the left and right ends of the top of the guide plate are fixedly connected to a fixing seat, and the two groups of pull rods are fixedly connected to the fixing seat on one side away from the pressing plate by bolts; A drainage device, the drainage device comprising a fixed plate, the side of the fixed plate away from the circular hole is fixedly connected to the inner wall of the protective shell, the side of the fixed plate away from the circular hole is fixedly connected to a contact plate, the side of the contact plate away from the fixed plate is rotatably connected to a rotating plate via a rotating shaft, a rotating rod is provided at the lower end of the rotating plate, and the rotating rod passes through the rotating plate; A control mechanism, wherein the control mechanism comprises a limit block, wherein a side of the limit block close to the rotating plate is fixedly connected to the limit block, a side of an inner wall of the limit block away from the protective shell is fixedly connected to a first support rod, and a side of the first support rod close to the rotating plate is fixedly connected to a positioning ring; According to the above technical solution, two groups of first baffles are arranged on the inner wall of the rotating plate, and the sides of the two groups of first baffles close to the rotating plate are fixedly connected to it, and the sides of the two groups of first baffles close to each other are rotatably connected to an arc plate through a rotating shaft.

[0007] According to the above technical solution, the rotating plate is fixedly connected to the second bending rod at a side away from the fixed plate, and the second bending rod is rotatably connected to the first bending rod via a rotating shaft at a side away from the rotating plate.

[0008] According to the above technical solution, the side of the first bending rod away from the second bending rod is fixedly connected to the bottom of the arc plate, the side of the first bending rod close to the second bending rod is fixedly connected to a pushing rod, the side of the pushing rod close to the second bending rod is fixedly connected to an insertion plate, and the top and bottom of the insertion plate are fixedly connected to a second spring.

[0009] According to the above technical solution, the two groups of the second springs are fixedly connected to a shaking plate on one side away from the insertion plate, the second bending rod is fixedly connected to a positioning rod on one side close to the first bending rod, and a sliding groove is provided on the side of the positioning rod close to the first bending rod. The drainage device is provided in two groups and is symmetrically arranged with the middle of the protective shell as the center.

[0010] According to the above technical solution, the side of the positioning ring away from the first support rod is fixedly connected to the second support rod, the outer wall of the rotating rod is provided with a splash plate, the inner wall of the splash plate is fixedly connected to the outer wall of the rotating rod, and the side of the splash plate close to the limit block is fixedly connected to the second baffle.

[0011] According to the above technical solution, a fixed column is fixedly connected to the top of the second support rod, a fixed ring is fixedly connected to the outer wall of the fixed column, a protective shell is fixedly connected to the side of the fixed ring away from the fixed column, a second sliding rod is provided on the inner wall of the protective shell, and the upper and lower ends of the second sliding rod are fixedly connected to the inner wall of the protective shell.

[0012] According to the above technical solution, the outer wall of the second sliding rod is slidably connected with a clamping plate, the bottom of the clamping plate away from the second sliding rod is fixedly connected with a third spring, the side of the third spring away from the clamping plate is fixedly connected to the bottom of the inner wall of the protective shell, and the control mechanism is provided in two groups, which are symmetrically arranged with the middle of the protective shell as the center.

[0013] Compared with the prior art, the present invention provides a monitoring camera device with a protective structure, which has the following beneficial effects: 1. The present invention provides a pressing plate. When the pressing plate moves downward, the pulling rod can be pulled to move according to the downward distance of the pressing plate. Thus, the rotation angle of the guide plate can be accurately adjusted. This design enables the guide plate to effectively prevent rainwater erosion by flexibly adjusting the rotation angle when facing different rainfall amounts.

[0014] 2. The present invention is capable of receiving rainwater flowing out from the side of the guide plate by providing an arc-shaped plate. The arc-shaped plate has unique properties and can be rotated to different degrees according to the amount of rainwater flowing out from the side of the guide plate. When the rotation angle of the arc-shaped plate is small, its inclination will increase accordingly. In this way, the speed of rainwater discharge can be accelerated, thereby increasing the drainage volume. This design can ensure that when rainwater flows through the side of the guide plate, the arc-shaped plate can efficiently process rainwater and avoid rainwater accumulation.

[0015] 3. The present invention is provided with an insert plate, which can fix the rotation angle of the arc plate according to the moving distance of the insert plate. When the arc plate is rotated, the insert plate loses the thrust of the arc plate and no longer moves in the sliding groove. At this time, the second spring starts to rebound, pushing the shaking plate to move, so that it abuts against the wall of the sliding groove, thereby achieving fixation.

[0016] 4. The present invention can limit the rotating rod by providing a card plate. The card plate can effectively prevent the rotating rod from rotating backward. In this way, when rain falls on the splash guard, the splash guard cannot rotate backward, thereby preventing rain from flowing toward the camera device. This design can ensure that the splash guard always remains in a suitable position under the impact of rain, thereby achieving better drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the reset mechanism of the present invention; Figure 4 It is a structural schematic diagram of the curved block of the present invention; Figure 5 It is a schematic structural diagram of the splash plate of the present invention; Figure 6 It is a schematic diagram of the structure of the drainage device of the present invention; Figure 7 is a schematic structural diagram of a first bending rod of the present invention; Figure 8 for Figure 7 A magnified view of middle; Fig. 9 It is a schematic diagram of the structure of the control of the present invention; Fig.10 It is a schematic structural diagram of the second support rod of the present invention.

[0018] In the figure: 1, protective shell; 2, reset mechanism; 201, guide plate; 202, fixed seat; 203, pull rod; 204, curved block; 205, first sliding rod; 206, pressing plate; 207, first spring; 3, drainage device; 301, fixed plate; 302, contact plate; 303, rotating plate; 304, curved plate; 305, first baffle; 306, rotating rod; 307, first bending rod; 308, second bending rod; 309, positioning rod ; 310, push rod; 311, insert plate; 312, shake plate; 313, second spring; 314, sliding groove; 4, control mechanism; 401, splash plate; 402, limit block; 403, second baffle; 404, first support rod; 405, positioning ring; 406, second support rod; 407, protective shell; 408, second sliding rod; 409, fixing column; 410, third spring; 411, clamping plate; 412, fixing ring; 5, circular hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example 1: See Figure 1-Figure 4 The present invention provides a technical solution: a monitoring camera device with a protective structure, including a protective shell 1, with circular holes 5 on both sides of the protective shell 1, and also includes: The reset mechanism 2 includes a curved block 204, the bottom of the curved block 204 is fixedly connected to the top of the protective shell 1, the bottom of the inner wall of the curved block 204 is fixedly connected to a first sliding rod 205, the outer wall of the lower end of the first sliding rod 205 is sleeved with a first spring 207, and the top of the first spring 207 is fixedly connected to a pressing plate 206, the first sliding rod 205 passes through the pressing plate 206 and is slidably connected to it, the left and right sides of the pressing plate 206 are in contact with the curved block 204, and the pressing plate 206 is provided. When the pressing plate 206 moves downward, it can be pulled by the distance it moves downward. The pull rod 203 is moved, thereby the rotation angle of the guide plate 201 can be accurately adjusted. This design enables the guide plate 201 to flexibly adjust the rotation angle when facing different rainfall conditions. The bottom of the left and right sides of the pressing plate 206 are rotatably connected to the pull rod 203 through a rotating shaft, the front of the protective shell 1 is rotatably connected to the guide plate 201 through a rotating shaft, and the left and right ends of the top of the guide plate 201 are fixedly connected to the fixing seat 202, and the two sets of pull rods 203 are fixedly connected to the fixing seat 202 on the side away from the pressing plate 206 by bolts.

[0023] The working principle of this embodiment is as follows: when the device is needed, the protective shell 1 is first used to cover the camera device. At this time, the staff bolts from the inner wall of the circular hole 5 to the wall. When encountering windy and rainy weather, the rain will tilt, and the rain will hit the guide plate 201, preventing the rain from blowing directly into the camera device, thereby wetting the lens. When the rain hits the guide plate 201, it will start to flow out from the groove on the guide plate 201. When there is more rain on the guide plate 201, the gravity of the rain and the wind resistance will cause the guide plate 201 to rotate downward. When the guide plate 201 rotates downward, it will drive the pulling rod 203 to move downward, so that when the pulling rod 203 moves downward, it will drive the pressing plate 206 to move synchronously, so that the pressing plate 206 slides downward through the first sliding rod 205, thereby pressing the first spring 207, so that the first spring 207 begins to shrink, thereby completing the work.

[0024] Example 2: Please refer to Figure 5-Figure 8On the basis of the first embodiment, the present invention provides a technical solution: a drainage device 3, the drainage device 3 comprises a fixed plate 301, the side of the fixed plate 301 away from the circular hole 5 is fixedly connected to the inner wall of the protective shell 1, the side of the fixed plate 301 away from the circular hole 5 is fixedly connected with a contact plate 302, the side of the contact plate 302 away from the fixed plate 301 is rotatably connected with a rotating plate 303 through a rotating shaft, a rotating rod 306 is provided at the lower end of the rotating plate 303, the rotating rod 306 penetrates the rotating plate 303, two groups of first baffles 305 are provided on the inner wall of the rotating plate 303, the two groups of first baffles 305 are fixedly connected to the rotating plate 303 on one side thereof, the two groups of first baffles 305 are rotatably connected to each other on one side thereof through a rotating shaft, the arc plate 304 is provided, and can receive rainwater flowing out from the side of the guide plate 201, the arc plate 304 has a unique performance, and can be adjusted according to the rainwater flowing out from the side of the guide plate 201 The arc plate 304 is rotated to different degrees according to the amount. When the rotation angle of the arc plate 304 is small, its inclination will increase accordingly. In this way, the speed of rainwater discharge can be accelerated, thereby increasing the drainage volume. The rotating plate 303 is fixedly connected to the second bending rod 308 away from the fixed plate 301. The side of the second bending rod 308 away from the rotating plate 303 is rotatably connected to the first bending rod 307 through a rotating shaft. The side of the first bending rod 307 away from the second bending rod 308 is fixedly connected to the bottom of the arc plate 304. The side of the first bending rod 307 close to the second bending rod 308 is fixedly connected to a push rod 310. The side of the push rod 310 close to the second bending rod 308 is fixedly connected to an insert plate 311. The top and bottom of the insert plate 311 are fixedly connected to a second spring 313. An insert plate 311 is provided, which can fix the rotation angle of the arc plate 304 according to the moving distance of the insert plate 311. When the arc plate 304 completes its rotation, the insert plate 311 loses the thrust of the arc plate 304 and no longer moves in the sliding groove 314. At this time, the second spring 313 starts to rebound, pushing the shaking plate 312 to move, so that it abuts against the wall of the sliding groove 314, thereby achieving fixation. The two sets of second springs 313 are fixedly connected to the shaking plate 312 on the side away from the insert plate 311, and the second bending rod 308 is fixedly connected to the side close to the first bending rod 307 with the positioning rod 309. The positioning rod 309 is provided with a sliding groove 314 on the side close to the first bending rod 307. The drainage device 3 is provided with two sets and both are symmetrically arranged with the middle of the protective shell 1 as the center.

[0025] The working principle of this embodiment is as follows: when rainwater flows out of the guide plate 201, a part of the rainwater will flow out from the side of the guide plate 201. At this time, the rotating plate 303 can be rotated to fit the guide plate 201 at an angle, so that the rainwater flowing out of the guide plate 201 will flow directly onto the curved plate 304, and then flow out from the curved plate 304. When rainwater falls on the curved plate 304, if the weight of the rainwater falling is large, the curved plate 304 will When receiving, the arc plate 304 will rotate downward. At this time, when the arc plate 304 rotates downward, it will push the first bending rod 307 downward, thereby driving the positioning rod 309 to move. When the positioning rod 309 moves, it will drive the shaking plate 312 to move synchronously, so that when the shaking plate 312 slides in the sliding groove 314, it will press the second spring 313 to contract, thereby adjusting the angle of the arc plate 304 to adapt to different rainfall amounts.

[0026] Example 3: Please refer to Figure 9-10 On the basis of the first and second embodiments, the present invention provides a technical solution: a control mechanism 4, the control mechanism 4 includes a limit block 402, the limit block 402 is fixedly connected to the rotating plate 303 on one side, the limit block 402 is fixedly connected to the first support rod 404 on the inner wall away from the protective shell 1, the first support rod 404 is fixedly connected to the rotating plate 303 on one side, the positioning ring 405 is fixedly connected to the second support rod 406 on the one side away from the first support rod 404, the outer wall of the rotating rod 306 is provided with a splash plate 401, the inner wall of the splash plate 401 is fixedly connected to the outer wall of the rotating rod 306, and the splash plate 40 A second baffle 403 is fixedly connected to the side close to the limit block 402, a fixing column 409 is fixedly connected to the top of the second support rod 406, a fixing ring 412 is fixedly connected to the outer wall of the fixing column 409, a protective shell 407 is fixedly connected to the side of the fixing ring 412 away from the fixing column 409, a second sliding rod 408 is arranged on the inner wall of the protective shell 407, both the upper and lower ends of the second sliding rod 408 are fixedly connected to the inner wall of the protective shell 407, and a clamping plate 411 is slidably connected to the outer wall of the second sliding rod 408, and the clamping plate 411 is arranged to limit the rotation rod 306. With the clamping plate 411, the rotation rod 306 can be effectively prevented from rotating backward. In this way, when rain falls on the splash plate 401, the splash plate 401 cannot rotate backward, thereby preventing rain from flowing to the camera device. This design can ensure that the splash plate 401 always remains in a suitable position under the impact of rain, so as to achieve better drainage. The bottom of the side of the card plate 411 away from the second sliding rod 408 is fixedly connected to the third spring 410, and the side of the third spring 410 away from the card plate 411 is fixedly connected to the bottom of the inner wall of the protective shell 407. The control mechanism 4 is arranged in two groups, and both are symmetrically arranged with the middle of the protective shell 1 as the center.

[0027] The working principle of this embodiment is as follows: when another part of the rainwater on the guide plate 201 directly falls onto the splash plate 401, the splash plate 401 will rotate forward, so that the rainwater will flow out of the splash plate 401, but another part of the rainwater will fall onto the tail of the splash plate 401, so that the splash plate 401 will start to rotate backward. At this time, when the splash plate 401 drives the rotating rod 306 to rotate synchronously, the rotating rod 306 rotates and contacts the card plate 411, thereby pushing the card plate 411 to move downward. The card plate 411 moves, so that the card plate 411 will slide downward on the second sliding rod 408 when it moves downward. At the same time, the card plate 411 will also press the third spring 410, so that the third spring 410 begins to contract and then rebounds, thereby pushing the card plate 411 upward, causing the card plate 411 to move upward on the second sliding rod 408, so that the card plate 411 will push the rotating rod 306 to rotate upward, so that the splash plate 401 seems to rotate forward, thereby discharging rainwater from the splash plate 401 and completing the work.

[0028] 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.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A surveillance camera device with a protective structure, comprising a protective shell (1), wherein the protective shell (1) is provided with circular holes (5) on both left and right sides, and wherein: Also includes: A reset mechanism (2), the reset mechanism (2) comprising a bent block (204), the bottom of the bent block (204) being fixedly connected to the top of the protective shell (1), the bottom of the inner wall of the bent block (204) being fixedly connected to a first sliding rod (205), the outer wall of the lower end of the first sliding rod (205) being sleeved with a first spring (207), the top of the first spring (207) being fixedly connected to a pressing plate (206), the first sliding rod (205) passing through the pressing plate (206) and slidingly engaging with the pressing plate (206) The left and right sides of the pressing plate (206) are in contact with the bent block (204), the bottoms of the left and right sides of the pressing plate (206) are rotatably connected to the pull rods (203) via a rotating shaft, the front of the protective shell (1) is rotatably connected to the guide plate (201) via a rotating shaft, the left and right ends of the top of the guide plate (201) are fixedly connected to the fixing seat (202), and the sides of the two groups of pull rods (203) away from the pressing plate (206) are fixedly connected to the fixing seat (202) via bolts; A drainage device (3), the drainage device (3) comprising a fixed plate (301), a side of the fixed plate (301) away from the circular hole (5) being fixedly connected to the inner wall of the protective shell (1), a side of the fixed plate (301) away from the circular hole (5) being fixedly connected to a contact plate (302), a side of the contact plate (302) away from the fixed plate (301) being rotatably connected to a rotating plate (303) via a rotating shaft, a rotating rod (306) being provided at the lower end of the rotating plate (303), and the rotating rod (306) penetrating the rotating plate (303); A control mechanism (4), the control mechanism (4) comprising a limit block (402), a side of the limit block (402) close to the rotating plate (303) being fixedly connected thereto, a side of the inner wall of the limit block (402) away from the protective shell (1) being fixedly connected to a first support rod (404), and a side of the first support rod (404) close to the rotating plate (303) being fixedly connected to a positioning ring (405).

2. The monitoring camera device with a protective structure according to claim 1, characterized in that: Two groups of first baffles (305) are arranged on the inner wall of the rotating plate (303); the sides of the two groups of first baffles (305) close to the rotating plate (303) are fixedly connected thereto; and the sides of the two groups of first baffles (305) close to each other are rotatably connected to an arc-shaped plate (304) via a rotating shaft.

3. The monitoring camera device with a protective structure according to claim 2, characterized in that: The rotating plate (303) is fixedly connected to a second bending rod (308) at a side away from the fixed plate (301); the second bending rod (308) is rotatably connected to the first bending rod (307) via a rotating shaft at a side away from the rotating plate (303).

4. The monitoring camera device with a protective structure according to claim 3, characterized in that: The side of the first bending rod (307) away from the second bending rod (308) is fixedly connected to the bottom of the arc plate (304), the side of the first bending rod (307) close to the second bending rod (308) is fixedly connected to a push rod (310), the side of the push rod (310) close to the second bending rod (308) is fixedly connected to an insertion plate (311), and the top and bottom of the insertion plate (311) are fixedly connected to a second spring (313).

5. The monitoring camera device with a protective structure according to claim 4, characterized in that: The two groups of the second springs (313) are fixedly connected to a shaking plate (312) on one side away from the insertion plate (311); the second bending rod (308) is fixedly connected to a positioning rod (309) on one side close to the first bending rod (307); a sliding groove (314) is provided on one side of the positioning rod (309) close to the first bending rod (307); and the drainage device (3) is provided with two groups and is symmetrically arranged with the middle of the protective shell (1) as the center.

6. The monitoring camera device with a protective structure according to claim 1, characterized in that: A second support rod (406) is fixedly connected to a side of the positioning ring (405) away from the first support rod (404); a splash plate (401) is provided on an outer wall of the rotating rod (306); an inner wall of the splash plate (401) is fixedly connected to the outer wall of the rotating rod (306); and a second baffle (403) is fixedly connected to a side of the splash plate (401) close to the limit block (402).

7. The monitoring camera device with a protective structure according to claim 6, characterized in that: The top of the second support rod (406) is fixedly connected to a fixing column (409), the outer wall of the fixing column (409) is fixedly connected to a fixing ring (412), the side of the fixing ring (412) away from the fixing column (409) is fixedly connected to a protective shell (407), the inner wall of the protective shell (407) is provided with a second sliding rod (408), and the upper and lower ends of the second sliding rod (408) are fixedly connected to the inner wall of the protective shell (407).

8. The monitoring camera device with a protective structure according to claim 7, characterized in that: The outer wall of the second sliding rod (408) is slidably connected to a clamping plate (411), the bottom of the clamping plate (411) away from the second sliding rod (408) is fixedly connected to a third spring (410), the side of the third spring (410) away from the clamping plate (411) is fixedly connected to the bottom of the inner wall of the protective shell (407), and the control mechanism (4) is arranged in two groups, and both are symmetrically arranged with the middle of the protective shell (1) as the center.

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