Shaver base with self-cleaning function
The self-cleaning razor base uses a rotating paddle and gas vibration mechanism to automatically clean and dry the razor, solving the problem of residual impurities on the razor blades and improving its service life and cleaning efficiency.
Patent Information
- Application Number
- CN202511303708.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-12
- Publication Date
- 2025-10-21
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
After using the existing manual razor, impurities are likely to remain inside the blade, resulting in poor cleaning and shortening the service life.
A razor base with a self-cleaning function is designed. The second rotating paddle is used to rotate and drive the extrusion head to vibrate. Through the cooperation of water flow and air, the razor is automatically cleaned and dried, reducing impurity residue.
The cleaning effect of the shaver is improved, impurity residue is reduced, the service life is extended, water resources are saved, and the use is avoided by residual water.
Smart Images
Figure CN120814715A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of razor bases, in particular to a razor base with a self-cleaning function. Background Art
[0002] A razor base is a product used to place, store, or protect a manual razor. A manual razor generally consists of a blade and a hoe-shaped blade holder. The blade holder is made of aluminum, stainless steel, copper, plastic, rubber, etc. The blade head is a combination of a blade and plastic rubber. The blade is generally made of stainless steel or carbon steel. To ensure the razor's sharpness and durability, the cutting edge is treated with special materials. When using, install the blade head on the blade holder and hold the handle of the blade holder to shave. After shaving, the manual razor can be placed on the base. After using a current manual razor, the user needs to manually clean the blade of the razor. However, impurities such as beards are likely to remain inside the blade. Directly rinsing with water may result in incomplete cleaning, resulting in impurities remaining inside the blade, which reduces the service life of the razor. Summary of the Invention
[0003] The object of the present invention is to provide a razor base with a self-cleaning function. When the second rotating paddle rotates, the extrusion head is supported by the first spring, so that the extrusion head vibrates following the rotation of the second rotating paddle. The vibration of the extrusion head drives the vibration of the movable plate. The vibration of the movable plate causes fluctuations in the water inside the base, thereby enhancing the cleaning effect of the water inside the base on impurities on the razor, reducing impurities remaining on the razor, and increasing the service life of the razor.
[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a shaver base with a self-cleaning function, comprising a base, a flushing mechanism provided on the base, and a pressing mechanism provided on the base; The flushing mechanism includes a clean water tank and a sewage tank arranged at the bottom of the base, one end of the clean water tank is connected to a delivery pipe, one end of the delivery pipe passes through the base, a first rotating paddle rotates inside the delivery pipe, reciprocating screws are provided at both ends of the first rotating paddle, an extrusion disk is movable on one side of the reciprocating screw, two groups of air supply columns are provided inside the base, the extrusion disk moves inside the air supply column, one end of the air supply column is connected to the outside, the other end of the air supply column is connected to an air storage barrel, one end of the air storage barrel is provided with an exhaust pipe, a second rotating paddle rotates inside the exhaust pipe, an extrusion head is extruded on one side of the second rotating paddle, and a movable plate is movable on one side of the extrusion head; The pressing mechanism includes a pressing plate that moves inside the base. Two groups of limiting plates are movable inside the base. A water blocking plate is fixed to one end of the limiting plate, and one end of the water blocking plate is plugged into the inside of the delivery pipe.
[0005] Preferably, both ends of the first rotating paddle pass through the delivery pipe and are connected to the reciprocating screw, both ends of the reciprocating screw are provided with limiting disks, the reciprocating screw and the movable sleeve are connected through a ball nut pair, and water inlets are respectively provided on one side of the clean water tank and the sewage tank.
[0006] Preferably, a movable sleeve is movably provided on the reciprocating screw rod, one side of the movable sleeve is connected to an extrusion disk, and the size of the extrusion disk is adapted to the air supply column.
[0007] Preferably, one end of the air supply column is connected to an air intake pipe, a first one-way valve is provided inside the air intake pipe, the other end of the air intake pipe is connected to an air supply pipe, one end of the air supply pipe is connected to the air storage barrel, and a second one-way valve is provided inside the air supply pipe.
[0008] Preferably, a pressure valve is provided on the exhaust pipe, a limiting sleeve is provided at one end of the exhaust pipe, one end of the extrusion head moves inside the limiting sleeve, a first spring is provided at one end of the extrusion head, one end of the first spring is connected to the limiting sleeve, one end of the first spring is connected to the extrusion head, an extrusion rod is provided on one side of the extrusion head, one end of the extrusion rod is connected to the movable plate, and the extrusion head is made of elastic material.
[0009] Preferably, a drain pipe is provided inside the base, one end of the drain pipe is connected to the sewage tank, and a solenoid valve is provided inside the drain pipe.
[0010] Preferably, a movable groove is provided inside the base, and multiple groups of second springs are provided at one end of the limiting plate, one end of the second spring is connected to the limiting plate, and one end of the second spring is connected to the movable groove.
[0011] Preferably, a third spring is provided at the bottom of the pressing plate, one end of the third spring is connected to the inner wall of the base, and a placement hole is provided inside the pressing plate.
[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. When the second rotating paddle rotates, the present invention supports the extrusion head through the first spring, so that the extrusion head vibrates along with the rotation of the second rotating paddle. The vibration of the extrusion head drives the vibration of the movable plate. The vibration of the movable plate causes fluctuations in the water inside the base, thereby enhancing the cleaning effect of the water inside the base on impurities on the shaver, reducing impurities remaining on the shaver, and increasing the service life of the shaver.
[0013] 2. The present invention places one end of the used razor head into the base, presses the razor after placement, and squeezes the limiting plate through the two ends of one side of the razor head. The limiting plate squeezes the second spring to move into the movable groove, so that the cutter head contacts the pressing plate. At the same time, the movement of the limiting plate drives the water blocking plate to move. One end of the water blocking plate moves inside the delivery pipe, making the delivery pipe a passage. The water inside the clean water tank is pumped out by the water pump in the delivery pipe and sprayed out through one end of the delivery pipe to clean the cutter head, thereby avoiding the waste of water resources caused by blind spraying.
[0014] 3. In the present invention, the gas is discharged through one end of the exhaust pipe. After the gas is discharged, the drain pipe is controlled to open by the electromagnetic valve, and the sewage inside the base is discharged into the sewage tank through the drain pipe for collection. The cleaned shaver is air-dried by the ejected gas to avoid moisture remaining on the shaver and affecting the service life of the shaver. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the flushing mechanism of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of part A; Figure 4 It is a schematic diagram of the structure of the pressing mechanism of the present invention; Figure 5 This is the second schematic diagram of the structure of the flushing mechanism of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of part B; Figure 7 This is the third schematic diagram of the partial structure of the flushing mechanism of the present invention.
[0016] In the figure: 1. base; 2. flushing mechanism; 21. clean water tank; 22. sewage tank; 24. delivery pipe; 25. first rotating paddle; 26. reciprocating screw; 27. limiting disk; 28. movable sleeve; 29. extrusion disk; 210. air supply column; 211. suction pipe; 212. air supply pipe; 213. air storage tank; 214. drain pipe; 215. solenoid valve; 216. exhaust pipe; 217. pressure valve; 218. second rotating paddle; 219. extrusion head; 220. extrusion rod; 221. first spring; 222. limiting sleeve; 223. movable plate; 3. pressing mechanism; 31. pressing plate; 32. placement hole; 33. limiting plate; 34. second spring; 35. water blocking plate; 36. third spring. DETAILED DESCRIPTION
[0017] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0018] See Figures 1 to 7 As shown, the present invention provides a shaver base with a self-cleaning function, comprising a base 1, a flushing mechanism 2 being provided on the base 1, and a pressing mechanism 3 being provided on the base 1; The flushing mechanism 2 includes a clean water tank 21 and a sewage tank 22 arranged at the bottom of the base 1. One end of the clean water tank 21 is connected to a delivery pipe 24, and one end of the delivery pipe 24 passes through the base 1. A first rotating paddle 25 rotates inside the delivery pipe 24, and reciprocating screws 26 are provided at both ends of the first rotating paddle 25. An extrusion disk 29 is movable on one side of the reciprocating screw 26. Two groups of air supply columns 210 are provided inside the base 1, and the extrusion disk 29 moves inside the air supply columns 210. One end of the air supply column 210 is connected to the outside world, and the other end of the air supply column 210 is connected to an air storage barrel 213. An exhaust pipe 216 is provided at one end of the air storage barrel 213. A second rotating paddle 218 rotates inside the exhaust pipe 216, and an extrusion head 219 is extruded on one side of the second rotating paddle 218, and a movable plate 223 is movable on one side of the extrusion head 219; The pressing mechanism 3 includes a pressing plate 31 movable inside the base 1 . Two sets of limiting plates 33 are movable inside the base 1 . A water blocking plate 35 is fixed to one end of the limiting plate 33 . One end of the water blocking plate 35 is plugged into the inside of the delivery pipe 24 .
[0019] When in use, put one end of the used razor head into the base 1, press the razor after putting it in, and squeeze the limiting plate 33 through the two ends of one side of the razor head. The limiting plate 33 squeezes the second spring 34 to move into the movable groove, so that the cutter head contacts the pressing plate 31. At the same time, the movement of the limiting plate 33 drives the water blocking plate 35 to move. One end of the water blocking plate 35 moves inside the delivery pipe 24, making the delivery pipe 24 a passage. The water inside the clean water tank 21 is pumped out by the water pump in the delivery pipe 24 and sprayed out through one end of the delivery pipe 24 to clean the cutter head, avoiding the waste of water resources caused by blind spraying.
[0020] At the same time, after the water flows in the delivery pipe 24, the water flow drives the first rotating paddle 25 to rotate, and the rotation of the first rotating paddle 25 drives the reciprocating screw 26 to rotate. The rotation of the reciprocating screw 26 drives the movable sleeve 28 to move through the ball nut pair. The movable sleeve 28 moves back and forth on the reciprocating screw 26, and the movement of the movable sleeve 28 drives the extrusion plate 29 to move. When the extrusion plate 29 moves, external air is sucked in through the second one-way valve inside the suction pipe 211 and the air supply pipe 212. When the movable sleeve 28 is reset, the inhaled external air is discharged into the air storage barrel 213 for temporary storage through the air supply pipe 212 and the first one-way valve inside the suction pipe 211. As the working time increases, the internal air pressure of the air storage barrel 213 exceeds the threshold value of the pressure valve 217, and the internal air pressure of the air storage barrel 213 is discharged into the exhaust pipe through the pressure valve 217. Inside 216, the gas flow inside the exhaust pipe 216 drives the second rotating paddle 218 to rotate, and the rotation of the second rotating paddle 218 squeezes the extrusion head 219, and the extrusion head 219 squeezes the first spring 221. At the same time, the movement of the extrusion head 219 drives the extrusion rod 220 to move, and the movement of the extrusion rod 220 drives the movable plate 223 to move. At the same time, when the second rotating paddle 218 rotates, the extrusion head 219 is supported by the first spring 221, so that the extrusion head 219 vibrates following the rotation of the second rotating paddle 218, and the vibration of the extrusion head 219 drives the movable plate 223 to vibrate. The vibration of the movable plate 223 causes fluctuations in the water inside the base 1, thereby enhancing the cleaning effect of the water inside the base 1 on impurities on the shaver, reducing impurities remaining on the shaver, and improving the service life of the shaver.
[0021] At the same time, the gas is discharged through one end of the exhaust pipe 216. After the gas is discharged, the solenoid valve 215 controls the drain pipe 214 to open, and the sewage inside the base 1 is discharged into the sewage tank 22 through the drain pipe 214 for collection. The sprayed gas is used to air-dry the cleaned shaver to prevent moisture from remaining on the shaver and affecting the service life of the shaver.
[0022] At the same time, after air drying, the shaver is pulled out, and the other end of the shaver is inserted into the pressing plate 31 to place the shaver. After cleaning, water is added to the clean water tank 21 through the water inlet, and the sewage in the sewage tank 22 is discharged through the water inlet.
[0023] In an optional embodiment, both ends of the first rotating paddle 25 pass through the conveying pipe 24 and are connected to the reciprocating screw 26. Both ends of the reciprocating screw 26 are provided with limiting disks 27. The reciprocating screw 26 and the movable sleeve 28 are connected by a ball nut pair. Water inlets are respectively provided on one side of the clean water tank 21 and the sewage tank 22.
[0024] It should be noted that after water flows through the delivery pipe 24, the water flow drives the first rotating paddle 25 to rotate, and the rotation of the first rotating paddle 25 drives the reciprocating screw 26 to rotate. The rotation of the reciprocating screw 26 drives the movable sleeve 28 to move through the ball nut pair. The movable sleeve 28 moves back and forth on the reciprocating screw 26, and the movement of the movable sleeve 28 is restricted by the limiting disk 27 to prevent the movable sleeve 28 from getting off the track when moving, affecting the normal operation of the device. After washing, water is added to the clean water tank 21 through the water inlet, and the sewage in the sewage tank 22 is discharged through the water inlet.
[0025] In an optional embodiment, a movable sleeve 28 is movable on the reciprocating screw rod 26 , and one side of the movable sleeve 28 is connected to an extrusion disk 29 , and the size of the extrusion disk 29 is adapted to the air supply column 210 .
[0026] It should be noted that the movement of the movable sleeve 28 drives the extrusion disk 29 to move, and the extrusion disk 29 moves to closely contact the inner wall of the air supply column 210.
[0027] In an optional embodiment, one end of the air supply column 210 is connected to an air intake pipe 211, a first one-way valve is provided inside the air intake pipe 211, and the other end of the air intake pipe 211 is connected to an air supply pipe 212, one end of the air supply pipe 212 is connected to the air storage barrel 213, and a second one-way valve is provided inside the air supply pipe 212.
[0028] It should be noted that the movement of the movable sleeve 28 drives the extrusion plate 29 to move. When the extrusion plate 29 moves, external air is sucked in through the second one-way valve inside the suction pipe 211 and the air supply pipe 212. When the movable sleeve 28 is reset, the inhaled external air is discharged into the air storage barrel 213 for temporary storage through the first one-way valve inside the air supply pipe 212 and the suction pipe 211.
[0029] In an optional embodiment, a pressure valve 217 is provided on the exhaust pipe 216, a limiting sleeve 222 is provided at one end of the exhaust pipe 216, one end of the extrusion head 219 moves inside the limiting sleeve 222, a first spring 221 is provided at one end of the extrusion head 219, one end of the first spring 221 is connected to the limiting sleeve 222, one end of the first spring 221 is connected to the extrusion head 219, an extrusion rod 220 is provided on one side of the extrusion head 219, one end of the extrusion rod 220 is connected to the movable plate 223, and the extrusion head 219 is made of elastic material.
[0030] It should be noted that as the working time increases, the internal air pressure of the air storage barrel 213 exceeds the threshold of the pressure valve 217, and the internal gas pressure of the air storage barrel 213 is discharged into the exhaust pipe 216 through the pressure valve 217. The gas flow inside the exhaust pipe 216 drives the second rotating paddle 218 to rotate, and the rotation of the second rotating paddle 218 squeezes the extrusion head 219, and the extrusion head 219 squeezes the first spring 221. At the same time, the movement of the extrusion head 219 drives the extrusion rod 220 to move, and the movement of the extrusion rod 220 drives the movable plate 223 to move. At the same time, when the second rotating paddle 218 rotates, the extrusion head 219 is supported by the first spring 221, so that the extrusion head 219 vibrates following the rotation of the second rotating paddle 218. The vibration of the extrusion head 219 drives the movable plate 223 to vibrate, and the vibration of the movable plate 223 causes fluctuations in the water inside the base 1.
[0031] In an optional embodiment, a drain pipe 214 is provided inside the base 1 , one end of the drain pipe 214 is connected to the sewage tank 22 , and a solenoid valve 215 is provided inside the drain pipe 214 .
[0032] It should be noted that after the gas is discharged, the drain pipe 214 is controlled to open by the solenoid valve 215, and the sewage inside the base 1 is discharged into the sewage tank 22 through the drain pipe 214 for collection.
[0033] In an optional embodiment, a movable groove is provided inside the base 1, and multiple groups of second springs 34 are provided at one end of the limiting plate 33. One end of the second spring 34 is connected to the limiting plate 33, and one end of the second spring 34 is connected to the movable groove.
[0034] It should be noted that, when one end of the used razor head is placed into the base 1 and the razor is pressed, the limiting plate 33 is squeezed by the two ends of one side of the razor head. The limiting plate 33 squeezes the second spring 34 to move into the movable groove, so that the razor head contacts the pressing plate 31.
[0035] In an optional embodiment, a third spring 36 is provided at the bottom of the pressing plate 31 , one end of the third spring 36 is connected to the inner wall of the base 1 , and a placement hole 32 is provided inside the pressing plate 31 .
[0036] It should be noted that the third spring 36 is used to assist in fixing the cutter head placed on the limiting plate 33, and the cutter head is clamped on the limiting plate 33 for cleaning. After air drying, the shaver is pulled out and the other end of the shaver is inserted into the pressing plate 31 to place the shaver.
[0037] Working principle: When in use, put one end of the used razor head into the base 1, press the razor after putting it in, and squeeze the limiting plate 33 through the two ends of one side of the razor head. The limiting plate 33 squeezes the second spring 34 to move into the movable groove, so that the cutter head contacts the pressing plate 31. At the same time, the movement of the limiting plate 33 drives the water blocking plate 35 to move. One end of the water blocking plate 35 moves inside the delivery pipe 24, making the delivery pipe 24 a passage. The water inside the clean water tank 21 is pumped out by the water pump in the delivery pipe 24 and sprayed out through one end of the delivery pipe 24.
[0038] At the same time, after the water flows in the delivery pipe 24, the water flow drives the first rotating paddle 25 to rotate, and the rotation of the first rotating paddle 25 drives the reciprocating screw 26 to rotate. The rotation of the reciprocating screw 26 drives the movable sleeve 28 to move through the ball nut pair. The movable sleeve 28 moves back and forth on the reciprocating screw 26. The movement of the movable sleeve 28 drives the extrusion plate 29 to move. When the extrusion plate 29 moves, external air is sucked in through the second one-way valve inside the suction pipe 211 and the air supply pipe 212. When the movable sleeve 28 is reset, the inhaled external air is discharged into the air storage barrel 213 for temporary storage through the air supply pipe 212 and the first one-way valve inside the suction pipe 211. As the working time increases, the internal air pressure of the air storage barrel 213 exceeds the threshold value of the pressure valve 217 Finally, the interior of the gas storage barrel 213 is discharged into the exhaust pipe 216 through the pressure valve 217. The gas flow inside the exhaust pipe 216 drives the second rotating paddle 218 to rotate. The rotation of the second rotating paddle 218 squeezes the extrusion head 219, and the extrusion head 219 squeezes the first spring 221. At the same time, the movement of the extrusion head 219 drives the extrusion rod 220 to move, and the movement of the extrusion rod 220 drives the movable plate 223 to move. At the same time, when the second rotating paddle 218 rotates, the extrusion head 219 is supported by the first spring 221, so that the extrusion head 219 vibrates following the rotation of the second rotating paddle 218. The vibration of the extrusion head 219 drives the movable plate 223 to vibrate, and the vibration of the movable plate 223 causes fluctuations in the water inside the base 1.
[0039] At the same time, the gas is discharged through one end of the exhaust pipe 216. After the gas is discharged, the solenoid valve 215 controls the drain pipe 214 to open, and the sewage inside the base 1 is discharged into the sewage tank 22 through the drain pipe 214 for collection. The cleaned shaver is air-dried by the ejected gas.
[0040] At the same time, after air drying, the shaver is pulled out and the other end of the shaver is inserted into the pressing plate 31. After cleaning, water is added to the clean water tank 21 through the water inlet, and the sewage in the sewage tank 22 is discharged through the water inlet.
[0041] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A shaver base with a self-cleaning function, comprising a base (1), characterized in that: The base (1) is provided with a flushing mechanism (2), and the base (1) is provided with a pressing mechanism (3); The flushing mechanism (2) comprises a clean water tank (21) and a sewage tank (22) arranged at the bottom of the base (1); one end of the clean water tank (21) is connected to a delivery pipe (24); one end of the delivery pipe (24) passes through the base (1); a first rotating paddle (25) rotates inside the delivery pipe (24); both ends of the first rotating paddle (25) are provided with a reciprocating screw (26); one side of the reciprocating screw (26) is provided with an extrusion disk (29); two sets of air delivery columns ( 210), the extrusion disk (29) moves inside the air supply column (210), one end of the air supply column (210) is connected to the outside, and the other end of the air supply column (210) is connected to the air storage barrel (213), one end of the air storage barrel (213) is provided with an exhaust pipe (216), a second rotating paddle (218) rotates inside the exhaust pipe (216), an extrusion head (219) is squeezed on one side of the second rotating paddle (218), and a movable plate (223) moves on one side of the extrusion head (219); The pressing mechanism (3) includes a pressing plate (31) movable inside the base (1), two sets of limiting plates (33) movable inside the base (1), a water blocking plate (35) fixed at one end of the limiting plate (33), and one end of the water blocking plate (35) plugged into the interior of the delivery pipe (24).
2. The shaver base with self-cleaning function according to claim 1, characterized in that: Both ends of the first rotating paddle (25) pass through the delivery pipe (24) and are connected to the reciprocating screw (26). Both ends of the reciprocating screw (26) are provided with a limiting disk (27). The reciprocating screw (26) is connected to the movable sleeve (28) through a ball nut pair. Water inlets are respectively provided on one side of the clean water tank (21) and the sewage tank (22).
3. The shaver base with self-cleaning function according to claim 1, characterized in that: A movable sleeve (28) is movable on the reciprocating screw rod (26), and one side of the movable sleeve (28) is connected to an extrusion disk (29). The size of the extrusion disk (29) is adapted to the air supply column (210).
4. The shaver base with self-cleaning function according to claim 1, characterized in that: One end of the air supply column (210) is connected to an air intake pipe (211), a first one-way valve is provided inside the air intake pipe (211), and the other end of the air intake pipe (211) is connected to an air supply pipe (212), one end of the air supply pipe (212) is communicated with an air storage barrel (213), and a second one-way valve is provided inside the air supply pipe (212).
5. The shaver base with self-cleaning function according to claim 1, characterized in that: A pressure valve (217) is provided on the exhaust pipe (216), a limiting sleeve (222) is provided at one end of the exhaust pipe (216), one end of the extrusion head (219) moves inside the limiting sleeve (222), a first spring (221) is provided at one end of the extrusion head (219), one end of the first spring (221) is connected to the limiting sleeve (222), one end of the first spring (221) is connected to the extrusion head (219), an extrusion rod (220) is provided on one side of the extrusion head (219), one end of the extrusion rod (220) is connected to the movable plate (223), and the extrusion head (219) is made of elastic material.
6. The shaver base with self-cleaning function according to claim 1, characterized in that: A drainage pipe (214) is provided inside the base (1), one end of the drainage pipe (214) is connected to the sewage tank (22), and a solenoid valve (215) is provided inside the drainage pipe (214).
7. The shaver base with self-cleaning function according to claim 1, characterized in that: A movable groove is provided inside the base (1), and a plurality of groups of second springs (34) are provided at one end of the limiting plate (33), one end of the second spring (34) is connected to the limiting plate (33), and one end of the second spring (34) is connected to the movable groove.
8. The shaver base with self-cleaning function according to claim 1, characterized in that: A third spring (36) is provided at the bottom of the pressing plate (31), one end of the third spring (36) is connected to the inner wall of the base (1), and a placement hole (32) is provided inside the pressing plate (31).