A filter with a quick assembly and installation structure

Abstract

This invention discloses a filter with a quick assembly and installation structure, specifically relating to the field of filter technology. It includes a filter and a bottom support plate, with two sliding grooves on the bottom support plate, each groove housing a sliding support device. The invention utilizes a connecting seat, connecting hole, limiting groove, limiting rod, first piston frame, first piston plate, second piston frame, second piston plate, and contact plate. When the connecting seat moves into the rotating seat, the increased air pressure in the first piston frame controls the movement of the first piston plate and the limiting rod. The limiting rod then passes through the connecting hole and enters the limiting groove, completing the assembly between the connecting seat and the rotating seat. Simultaneously, the pressurized gas in the second piston frame is transferred to the third piston frame through a second connecting pipe. The increased air pressure in the third piston frame controls the contact buffer rod to press against the filter surface. This makes the filter installation process convenient and quick, and reduces the risk of corrosion affecting disassembly and assembly.

Description

Technical Field

[0001] This invention relates to the field of filter technology, and more specifically, to a filter having a quick assembly and installation structure. Background Technology

[0002] A filter is a frequency-selective device that allows specific frequency components of a signal to pass through while significantly attenuating other frequency components. Utilizing this frequency-selective property, filters can remove interference noise or perform spectral analysis. In other words, any device or system that allows specific frequency components of a signal to pass through while significantly attenuating or suppressing other frequency components is called a filter. A filter is a device that filters waves. While "wave" is a very broad physical concept, in the field of electronics, it is narrowly defined to specifically describe the process of how the values ​​of various physical quantities fluctuate over time.

[0003] Filters are often installed using bolts. Bolts exposed to air for extended periods may corrode, making subsequent disassembly and assembly difficult. Furthermore, once the filter is secured with bolts, impacts from external objects can affect the wave shape, interfering with the filter's performance. Therefore, a filter with a quick-assembly and installation structure is needed to address these issues. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a filter with a quick assembly and installation structure. The technical problem to be solved by the present invention is that the installation method of the existing filter is prone to making disassembly and assembly difficult after corrosion, and the energy generated by the impact may affect the shape of the wave, thus affecting the filtering performance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a filter with a quick assembly and installation structure, comprising a filter and a bottom support plate. Two sliding grooves are formed on the bottom support plate, and sliding support devices are provided within the grooves. Connecting seats located under the filter are attached to the two sliding support devices. A piston limiting device is provided on each sliding support device. The piston limiting device is connected to a piston pressing device located on the bottom support plate via a first connecting pipe. The piston pressing device is attached to the connecting seat. The piston pressing device is connected to two piston buffer devices located on the bottom support plate via two second connecting pipes. The piston buffer devices are attached to the filter. Six buffer elastic components are provided under the filter. The buffer elastic components are connected to the bottom support plate. Four sliding buffer devices are snapped into the bottom plate. The bottom support plate is slidably mounted on the bottom plate.

[0006] As a further embodiment of the present invention: two threaded connecting pieces are connected to both sides of the base plate, and limit grooves are opened on both sides of the connecting seat. The piston limiting device is located in the limit groove, and a control air valve is connected to one side of one of the piston limiting devices.

[0007] As a further aspect of the present invention: the sliding support device includes a slider, the slider being slidably disposed in a groove, and a first elastic component being provided on both sides of the slider, the other end of the first elastic component being connected to the groove, a movable frame being connected to the slider, and a bearing being through-engaged on one side of the movable frame.

[0008] As a further embodiment of the present invention: the bearing is fitted with a rotating shaft, the piston limiting device is disposed on the rotating shaft, one end of the rotating shaft is connected to a rotating seat, two connecting holes are opened on one side of the rotating seat, the piston limiting device is located in the connecting holes, and the position of the connecting holes corresponds to the position of the limiting groove.

[0009] As a further aspect of the present invention: the piston limiting device includes a first piston frame, the first piston frame is connected to a rotating shaft, a first piston plate is slidably disposed inside the first piston frame, a limiting rod is connected to the other side of the first piston plate, a movable sleeve is slidably disposed outside the limiting rod and passes through the side of the first piston frame, and the limiting rod passes through the connecting hole and is located in the limiting groove.

[0010] As a further aspect of the present invention: a second elastic component is connected to one side of the first piston plate, and the other end of the second elastic component is connected to the first piston frame. The air storage chamber on the side of the first piston frame away from the connecting seat is connected to the control air valve and the first connecting pipe.

[0011] As a further aspect of the present invention: the piston extrusion device includes a second piston frame, the second piston frame is connected to a bottom support plate, a second piston plate is slidably disposed inside the second piston frame, and three first vertical rods are connected to the second piston plate, the top ends of the first vertical rods being connected to a contact plate.

[0012] As a further embodiment of the present invention: the first vertical rod passes through and slides on the second piston frame, a third elastic component is provided outside the first vertical rod, the bottom end of the third elastic component is connected to the second piston plate, the top end of the third elastic component is connected to the second piston frame, and the first connecting pipe and the second connecting pipe are both connected to the gas storage chamber on the side of the second piston frame away from the contact plate.

[0013] As a further aspect of the present invention: the piston buffer device includes a third piston frame, the third piston frame is connected to a bottom support plate, a third piston plate is slidably disposed inside the third piston frame, a fourth elastic component is connected below the third piston plate, the other end of the fourth elastic component is connected inside the third piston frame, a second vertical rod is connected to the third piston plate, a connecting sleeve is provided through the second vertical rod and disposed on the third piston frame, a contact buffer rod is connected to the top of the second vertical rod, the contact buffer rod overlaps the filter, and the air storage chamber on the lower side inside the third piston frame is connected to the second connecting pipe.

[0014] As a further embodiment of the present invention: the sliding buffer device includes a sliding sleeve, which is inserted and locked inside the base plate. A sliding rod is slidably disposed inside the sliding sleeve. One end of the sliding rod is connected to the bottom support plate, and the other end of the sliding rod is connected to a circular plate. A fifth elastic component is disposed outside the sliding rod. One end of the fifth elastic component is connected to the circular plate, and the other end of the fifth elastic component is connected to the sliding sleeve.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This invention, by setting a connecting seat, connecting hole, limiting groove, limiting rod, first piston frame, first piston plate, second piston frame, second piston plate and contact plate, compresses the contact plate and second piston plate to move during the downward movement of the connecting seat. When the connecting seat moves into the rotating seat, the increased air pressure in the first piston frame controls the movement of the first piston plate and the limiting rod. At this time, the limiting rod passes through the connecting hole and enters the limiting groove, completing the assembly between the connecting seat and the rotating seat. At the same time, the pressurized gas in the second piston frame is transferred to the third piston frame through the second connecting pipe. The increased air pressure in the third piston frame controls the contact buffer rod to press against the filter surface. The filter installation operation is convenient and quick, and it is not easy to have rust affecting the disassembly and assembly.

[0017] 2. This invention, by setting up a buffer elastic component, a slider, a groove, a first elastic component, a bearing, a rotating shaft, a fifth elastic component, a sliding rod, and a sliding sleeve, allows the filter to be buffered when it is impacted in the horizontal direction. At this time, the bottom support plate drives the sliding rod to slide, compressing the fifth elastic component on one side while stretching the fifth elastic component on the other side. The impact buffers the impact, or the impact pushes the filter and the moving frame to move. At this time, the slider slides in the groove, and the first elastic component is stretched or compressed to buffer the impact. When the filter body is compressed from the top, the filter rotates around the rotating shaft and compresses the buffer elastic component, buffering the impact from multiple directions and angles, avoiding obvious impacts, reducing damage to the filter caused by impacts, and reducing the impact of energy waves generated by impacts on the filtering process.

[0018] 3. By setting a control valve, the inside of the first piston frame is connected to the outside after the control valve is opened. At this time, the high pressure environment inside the first piston frame returns to the normal pressure state. The second elastic component drives the first piston plate to move. At this time, the first piston plate drives the limit rod to automatically separate from the limit groove. Then the filter can be directly removed upwards. The disassembly process is simple and quick. The rotating seat can guide the connecting seat to ensure that the position of the limit groove and the position of the connecting hole automatically and accurately correspond. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a three-dimensional, exploded structural diagram of the present invention;

[0021] Figure 3 This is a three-dimensional exploded structural diagram of the bottom support plate of the present invention;

[0022] Figure 4 This is a three-dimensional cross-sectional structural diagram of the piston extrusion device of the present invention;

[0023] Figure 5 This is a three-dimensional cross-sectional structural diagram of the piston limiting device of the present invention;

[0024] Figure 6 This is a three-dimensional cross-sectional structural diagram of the piston buffer device of the present invention;

[0025] Figure 7 This is a three-dimensional structural diagram of the base plate of the present invention viewed from below;

[0026] In the diagram: 1. Filter; 2. Bottom support plate; 3. Slide groove; 4. Sliding support device; 41. Slider; 42. First elastic component; 43. Moving frame; 44. Bearing; 45. Rotating shaft; 46. Rotating seat; 47. Connecting hole; 5. Connecting seat; 6. Limiting groove; 7. Piston limiting device; 71. First piston frame; 72. First piston plate; 73. Second elastic component; 74. Limiting rod; 75. Moving sleeve; 8. Control valve; 9. First connecting pipe; 10. Piston extrusion device; 101. Second piston frame; 02. Second piston plate; 103. First vertical rod; 104. Third elastic component; 105. Contact plate; 11. Second connecting pipe; 12. Piston buffer device; 121. Third piston frame; 122. Third piston plate; 123. Fourth elastic component; 124. Connecting sleeve; 125. Second vertical rod; 126. Contact buffer rod; 13. Buffer elastic component; 14. Base plate; 15. Threaded connecting piece; 16. Sliding buffer device; 161. Sliding sleeve; 162. Sliding rod; 163. Circular plate; 164. Fifth elastic component. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figure 1-7 As shown, the present invention provides a filter with a quick assembly and installation structure, including a filter 1 and a bottom support plate 2. The bottom support plate 2 has two sliding grooves 3, and a sliding support device 4 is provided in the sliding grooves 3. A connecting seat 5 located under the filter 1 is connected to the two sliding support devices 4. A piston limiting device 7 is provided on the sliding support device 4. The sliding support device 4 includes a slider 41, which is slidably disposed in the sliding groove 3. A first elastic component 42 is provided on both sides of the slider 41. The other end of the first elastic component 42 is connected to the sliding groove 3. A movable frame 43 is connected to the slider 41, and a bearing 44 is inserted through one side of the movable frame 43.

[0029] A rotating shaft 45 is fitted inside the bearing 44. A piston limiting device 7 is mounted on the rotating shaft 45. One end of the rotating shaft 45 is connected to a rotating seat 46. Two connecting holes 47 are opened on one side of the rotating seat 46. The piston limiting device 7 is located in the connecting holes 47. The position of the connecting holes 47 corresponds to the position of the limiting groove 6. By setting the first elastic component 42, the slider 41 and the slide groove 3, and the slider 41 is T-shaped, when the filter 1 is impacted in the front-back direction, the slider 41 slides in the slide groove 3 for a certain stroke, compressing or stretching the first elastic component 42 to buffer the impact. By setting the moving frame 43, the bearing 44 and the rotating shaft 45, the bearing 44 supports and limits the rotating shaft 45 and the rotating seat 46, ensuring that the rotating seat 46, the connecting seat 5 and the filter 1 can rotate smoothly at a certain angle. The rotating seat 46 limits and supports the connecting seat 5, and ensures that the limiting groove 6 can accurately correspond to the position of the connecting hole 47.

[0030] The piston limiting device 7 is connected to the piston extrusion device 10 provided on the bottom support plate 2 through the first connecting pipe 9. The piston limiting device 7 includes a first piston frame 71, which is connected to the rotating shaft 45. A first piston plate 72 is slidably provided inside the first piston frame 71. A limiting rod 74 is connected to the other side of the first piston plate 72. A movable sleeve 75 is slidably provided outside the limiting rod 74, which passes through the side of the first piston frame 71. The limiting rod 74 passes through the connecting hole 47 and is located in the limiting groove 6.

[0031] A second elastic component 73 is connected to one side of the first piston plate 72, and the other end of the second elastic component 73 is connected to the first piston frame 71. The air storage chamber on the side of the first piston frame 71 away from the connecting seat 5 is connected to the control air valve 8 and the first connecting pipe 9. By setting a limiting rod 74, a limiting groove 6 and a connecting hole 47, the limiting rod 74 passes through the connecting hole 47 and enters the limiting groove 6 to realize the assembly between the connecting seat 5 and the rotating seat 46. By setting the first piston frame 71, the first piston plate 72 and the second elastic component 73, the movement of the first piston plate 72 and the limiting rod 74 can be smoothly controlled when the air pressure in the first piston frame 71 increases. When the air pressure in the first piston frame 71 returns to normal, the second elastic component 73 drives the limiting rod 74 to automatically separate from the limiting groove 6. By setting the control air valve 8, the control air valve 8 is used to control the return of normal air pressure in the first piston frame 71.

[0032] The piston extrusion device 10 is attached to the connecting seat 5. The piston extrusion device 10 is connected to two piston buffer devices 12 provided on the bottom support plate 2 through two second connecting pipes 11. The piston extrusion device 10 includes a second piston frame 101, which is connected to the bottom support plate 2. A second piston plate 102 is slidably provided in the second piston frame 101. Three first vertical rods 103 are connected to the second piston plate 102. The top of the first vertical rods 103 is connected to the contact plate 105.

[0033] The first vertical rod 103 is slidably mounted on the second piston frame 101. A third elastic component 104 is provided outside the first vertical rod 103. The bottom end of the third elastic component 104 is connected to the second piston plate 102, and the top end of the third elastic component 104 is connected to the second piston frame 101. The first connecting pipe 9 and the second connecting pipe 11 are both connected to the gas storage chamber on the side of the second piston frame 101 away from the contact plate 105. By setting the second piston frame 101, the second piston plate 102, the first vertical rod 103 and the contact plate 105, the contact plate 105 can control the movement of the first vertical rod 103 by using the downward movement of the connecting seat 5 during the installation process, so as to facilitate the downward movement of the second piston plate 102 and squeeze the gas in the second piston frame 101 to the first piston frame 71 and the piston buffer device 12 to control the gas pressure in the first piston frame 71 and the piston buffer device 12. The third elastic component 104 is used to control the second piston plate 102 to reset and move after the contact plate 105 is separated from the connecting seat 5.

[0034] The piston buffer device 12 is attached to the filter 1. The piston buffer device 12 includes a third piston frame 121, which is connected to the bottom support plate 2. A third piston plate 122 is slidably disposed inside the third piston frame 121. A fourth elastic component 123 is connected to the lower part of the third piston plate 122. The other end of the fourth elastic component 123 is connected to the third piston frame 121. A second vertical rod 125 is connected to the third piston plate 122. A connecting sleeve 124 is provided on the second vertical rod 125, which passes through the third piston frame 121. A contact buffer rod 126 is connected to the top of the second vertical rod 125. The contact buffer rod 126 is attached to the filter 1. The air storage chamber on the lower side of the three-piston frame 121 is connected to the second connecting pipe 11. By setting the third piston frame 121, the third piston plate 122, the second vertical rod 125 and the contact buffer rod 126, when the air pressure in the third piston frame 121 increases, the third piston plate 122 and the second vertical rod 125 drive the contact buffer rod 126 to move upward, controlling the contact buffer rod 126 to contact the filter 1. The larger air pressure in the contact buffer rod 126 and the third piston frame 121 provides certain support and buffer for the rotation of the filter 1 after being compressed. When the air pressure in the third piston frame 121 returns to normal, the fourth elastic component 123 can control the contact buffer rod 126 to reset downward.

[0035] The filter 1 is provided with six buffer elastic components 13. By setting the buffer elastic components 13, the buffer elastic components 13 rotate and squeeze the filter 1 under the tilting pressure, so as to achieve buffer protection against collision.

[0036] The buffer elastic component 13 is connected to the bottom support plate 2. Four sliding buffer devices 16 are connected to the bottom support plate 2 and snapped into the bottom plate 14. The bottom support plate 2 is slidably mounted on the bottom plate 14.

[0037] Two threaded connecting pieces 15 are connected to both sides of the base plate 14. Limiting grooves 6 are opened on both sides of the connecting seat 5. The piston limiting device 7 is located in the limiting groove 6. A control air valve 8 is connected to one side of one of the piston limiting devices 7.

[0038] The sliding buffer device 16 includes a sliding sleeve 161, which is inserted and locked inside the base plate 14. A sliding rod 162 is slidably mounted inside the sliding sleeve 161. One end of the sliding rod 162 is connected to the bottom support plate 2, and the other end of the sliding rod 162 is connected to a circular plate 163. A fifth elastic component 164 is mounted on the outer sleeve of the sliding rod 162. One end of the fifth elastic component 164 is connected to the circular plate 163, and the other end of the fifth elastic component 164 is connected to the sliding sleeve 161. By setting the sliding rod 162 and the sliding sleeve 161, the bottom support plate 2 and the sliding rod 162 can slide relative to the sliding sleeve 161 and the base plate 14 to a certain extent, which provides a certain degree of buffering for the pressure on the bottom support plate 2 and the filter 1. At the same time, the fifth elastic component 164 applies elastic force to the sliding rod 162 during the movement of the sliding rod 162, which further increases the buffering and protection effect under pressure.

[0039] Working principle of this invention:

[0040] When assembling filter 1, firstly, control the connecting seat 5 to lower to the position corresponding to the rotating seat 46. During the downward movement of the connecting seat 5, the contact plate 105 and the second piston plate 102 are pressed and moved. When the connecting seat 5 moves into the rotating seat 46, the second piston plate 102 moves within the second piston frame 101, which compresses and transfers the gas in the second piston frame 101 to the first piston frame 71 and the third piston frame 121. At this time, the increased air pressure in the first piston frame 71 controls the movement of the first piston plate 72 and the limiting rod 74. At this time, the limiting rod 74 passes through the connecting hole 47 and enters the limiting groove 6, completing the assembly between the connecting seat 5 and the rotating seat 46. The increased air pressure in the third piston frame 121 controls the third piston plate 122 to move upward. The third piston plate 122 controls the contact buffer rod 126 to abut against the surface of filter 1 through the second vertical rod 125. At the same time, filter 1... When the filter 1 is in contact with the buffer elastic component 13 and is impacted by a rearward tilting collision, the collision causes the moving frame 43 and the slider 41 to move. At the same time, the first elastic component 42 on the front side is stretched and the first elastic component 42 on the rear side is compressed, thus buffering the collision movement process. Simultaneously, the filter 1 is subjected to downward pressure, which controls the filter 1 to rotate around the rotation axis 45. At the same time, the buffer elastic component 13 on the front side is compressed, and the contact buffer rod 126 is squeezed downward to buffer the downward pressure. When it is necessary to disassemble the filter 1, the control air valve 8 is opened directly. At this time, the high pressure environment in the first piston frame 71 returns to the normal pressure state. The second elastic component 73 drives the first piston plate 72 to move. At this time, the first piston plate 72 drives the limit rod 74 to automatically separate from the limit groove 6. Then the filter 1 can be directly removed upward.

[0041] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0042] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0043] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A filter with a quick assembly and installation structure, comprising a filter (1) and a bottom support plate (2), characterized in that: Two sliding grooves (3) are provided on the bottom support plate (2). Sliding support devices (4) are provided in the sliding grooves (3). Connecting seats (5) located under the filter (1) are connected to the two sliding support devices (4). Piston limiting devices (7) are provided on the sliding support devices (4). The piston limiting devices (7) are connected to the piston pressing device (10) located on the bottom support plate (2) through the first connecting pipe (9). The piston pressing device (10) is connected to the connecting seat (5). The device (10) is connected to two piston buffer devices (12) on the bottom support plate (2) through two second connecting pipes (11). The piston buffer device (12) is attached to the filter (1). The filter (1) is provided with six buffer elastic components (13). The buffer elastic components (13) are connected to the bottom support plate (2). The bottom support plate (2) is connected to four sliding buffer devices (16) that are snapped into the bottom plate (14). The bottom support plate (2) is slidably mounted on the bottom plate (14). Two threaded connecting pieces (15) are connected to both sides of the base plate (14). Limiting grooves (6) are opened on both sides of the connecting seat (5). The piston limiting device (7) is located in the limiting groove (6). One side of the piston limiting device (7) is connected to a control air valve (8). The sliding support device (4) includes a slider (41), which is slidably disposed in the slide groove (3). Both sides of the slider (41) are provided with first elastic components (42), and the other end of the first elastic components (42) is connected to the slide groove (3). A movable frame (43) is connected to the slider (41), and a bearing (44) is inserted through one side of the movable frame (43). The bearing (44) is fitted with a rotating shaft (45), and the piston limiting device (7) is provided on the rotating shaft (45). One end of the rotating shaft (45) is connected to a rotating seat (46). Two connecting holes (47) are opened on one side of the rotating seat (46). The piston limiting device (7) is located in the connecting hole (47). The position of the connecting hole (47) corresponds to the position of the limiting groove (6). The piston limiting device (7) includes a first piston frame (71), which is connected to a rotating shaft (45). A first piston plate (72) is slidably disposed inside the first piston frame (71). A limiting rod (74) is connected to the other side of the first piston plate (72). A movable sleeve (75) is slidably disposed outside the limiting rod (74) and passes through the side of the first piston frame (71). The limiting rod (74) passes through the connecting hole (47) and is located in the limiting groove (6). The first piston plate (72) is connected to a second elastic component (73) on one side, and the other end of the second elastic component (73) is connected to the first piston frame (71). The gas storage chamber on the side of the first piston frame (71) away from the connecting seat (5) is connected to the control gas valve (8) and the first connecting pipe (9). The piston extrusion device (10) includes a second piston frame (101), which is connected to the bottom support plate (2). A second piston plate (102) is slidably disposed inside the second piston frame (101). Three first vertical rods (103) are connected to the second piston plate (102), and the top of the first vertical rods (103) is connected to the contact plate (105). The first vertical rod (103) passes through and slides on the second piston frame (101). A third elastic component (104) is provided outside the first vertical rod (103). The bottom end of the third elastic component (104) is connected to the second piston plate (102), and the top end of the third elastic component (104) is connected to the second piston frame (101). The first connecting pipe (9) and the second connecting pipe (11) are both connected to the gas storage chamber on the side of the second piston frame (101) away from the contact plate (105). The piston buffer device (12) includes a third piston frame (121), which is connected to the bottom support plate (2). A third piston plate (122) is slidably disposed inside the third piston frame (121). A fourth elastic component (123) is connected to the lower part of the third piston plate (122). The other end of the fourth elastic component (123) is connected to the third piston frame (121). A second vertical rod (125) is connected to the third piston plate (122). A connecting sleeve (124) is provided on the second vertical rod (125) and passes through the third piston frame (121). A contact buffer rod (126) is connected to the top of the second vertical rod (125). The contact buffer rod (126) overlaps the filter (1). The air storage chamber on the lower side of the third piston frame (121) is connected to the second connecting pipe (11).

2. The filter with a quick assembly and installation structure according to claim 1, characterized in that: The sliding buffer device (16) includes a sliding sleeve (161), which is inserted and locked inside the base plate (14). A sliding rod (162) is slidably provided inside the sliding sleeve (161). One end of the sliding rod (162) is connected to the bottom support plate (2), and the other end of the sliding rod (162) is connected to a circular plate (163). A fifth elastic component (164) is provided on the outer sleeve of the sliding rod (162). One end of the fifth elastic component (164) is connected to the circular plate (163), and the other end of the fifth elastic component (164) is connected to the sliding sleeve (161).

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