Automatic glove wearing device
By setting the first suction cup and the base thumb upward vertically in the wear mechanism of the glove automatic wear device, the problem of misalignment of the glove wear is solved, and a convenient and accurate wear process is achieved.
Patent Information
- Application Number
- CN202411668095.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-02-18
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing glove automatic wear devices are likely to cause misalignment of gloves when worn, especially because the palms are facing up or down, which leads to inconsistent wear of both hands and inconvenient use.
The first suction cup and base thumb in the wearable mechanism are arranged vertically, and the user can complete the wear by simply extending his hand vertically, without distinguishing between the left and right hands or palms facing up and down.
It avoids misalignment of gloves and is more convenient to use. There is no need to distinguish the orientation of left and right hands or palms, which improves wear efficiency and accuracy.
Smart Images
Figure CN119454248A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of glove wearing equipment, and in particular to an automatic glove wearing device. Background Art
[0002] In hospitals, in order to prevent the spread of germs or infection, medical staff will wear clean gloves when performing contact operations. Some hospitals are equipped with automatic glove-donning devices to facilitate medical staff to wear gloves.
[0003] Existing glove wearing devices usually place the wearing part horizontally, and medical staff need to put their hands in flatly. However, the hands are mirror-symmetrical when they are laid flat. If the palms of both hands are pointed in the same direction and inserted into the device, one side can be worn normally, while the thumb of the other side is wrapped around the little finger of the glove, causing misalignment. In order to solve this problem, some glove wearing devices set the wearing part in a mirror-image manner, but the hands are placed flat with the palm facing up and the palm facing down. When the palms are facing up, the thumbs of both hands are located on the outside, and when the palms are facing down, the thumbs of both hands are located on the inside. Different users have different wearing habits. When using the glove wearing device, it is unclear how the wearing part is set, which easily causes misalignment of the hands. Therefore, the present invention sets the wearing part vertically with the thumb facing up. Since it is very awkward to put the hand into the device with the thumb facing down, the user will instinctively put the thumb upward into the device, thereby avoiding misalignment of the glove. This wearing method does not need to distinguish between the left and right hands, which is very convenient. Summary of the invention
[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.
[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a glove automatic donning device, including a shell, a storage mechanism slidably arranged on the shell, a moving mechanism fixedly arranged on the shell, an extraction mechanism slidably arranged on the moving mechanism, a wearing mechanism fixedly arranged on the shell, a wearing port fixedly arranged on the shell, and an electric control panel fixedly arranged on the shell; the wearing mechanism includes a baffle fixedly arranged on the shell, a base plate rotatably arranged on the shell, a first spring symmetrically fixed on the base plate and the shell, a first connecting component slidably arranged on the base plate, a first slide groove fixedly arranged on the base plate, a first suction cup slidably arranged on the first slide groove, and a pneumatic component fixedly arranged on the first slide groove. The storage mechanism is used to store the gloves and push the gloves to contact the extraction mechanism; the moving mechanism is used to move the extraction mechanism; the wearing mechanism cooperates with the extraction mechanism to pull the gloves open; the user puts his hand in through the wearing opening; the electric control board is used to control the operation of the motor, cylinder and air pump; the baffle is used to limit and prevent the bottom plate from excessive rotation; a rotating shaft is provided at both ends of the bottom plate, which can rotate on the shell; the first spring is a torsion spring for resetting; the first connecting component is used to connect the extraction mechanism; the first suction cup can slide on the first slide groove, squeeze the air pressure component, and make the air pressure component suck one side of the glove; the first suction cup is provided with a plurality of through holes, which cooperate with the air pressure component to suck one side of the glove; the first suction cup is in the shape of a hand, and is arranged vertically with the thumb facing upward. When using it, the user only needs to put his hand in vertically to complete the wearing, without distinguishing between the left and right hands, and whether the palm is facing up or down. It is practical and convenient.
[0006] Specifically, the storage mechanism includes a box body slidably mounted on the shell, a box cover fixedly mounted on the box body, a first groove fixedly mounted on the shell, a storage groove fixedly mounted on the box body, and a pushing assembly slidably mounted on the storage groove. The box body is slidably mounted on the shell, and an opening is provided at one end of the box body that contacts the extraction mechanism. The shape of the opening is the same as that of the storage groove, but the opening area is smaller, so as to prevent the pushing assembly from directly pushing the gloves in the storage groove out of the box body; the box cover is fixed to the box body by magnetic attraction, and a protrusion is provided on one side of the box cover, which matches the first groove, so that the user can distinguish the direction of the box body during installation, and the protrusion also facilitates the user to remove the box body and the box cover, so as to facilitate the placement of gloves; the storage groove is in the shape of a hand, and is used to store gloves. The user needs to put the gloves into the storage groove; the pushing assembly is used to push the gloves.
[0007] Specifically, the pushing assembly includes a push plate slidably arranged on the storage slot, a plurality of telescopic rods fixedly arranged on the box cover and the push plate, and a second spring fixedly arranged on the box cover and the push plate. The push plate has the same shape as the storage slot; the second spring is a compression spring; when a glove is placed in the storage slot, the glove will push the push plate, causing the telescopic rod to shrink and the second spring to compress, and the second spring will exert a reaction force on the push plate, thereby pushing the glove to fit closely against one end of the storage box opening.
[0008] Specifically, the moving mechanism includes a motor fixed on the housing, a threaded rod rotatably mounted on the housing, a guide rod fixed on the housing, and a slider sleeved on the threaded rod and the guide rod. The motor is controlled by the electric control board to drive the threaded rod to rotate; two guide rods are provided, which are smooth guide rods and are used to limit the position so that the slider remains in a vertical state; the slider is provided with threads to cooperate with the threaded rod, and the slider is provided with two through holes to cooperate with the guide rod; the motor drives the threaded rod to rotate when it works, and the threaded rod drives the slider to move.
[0009] Specifically, the extraction mechanism includes a cylinder fixed on the slider, a rotating shaft fixed on the cylinder, a base rotatably mounted on the rotating shaft, a cavity fixed on the base, a separation component fixed on the base, a plurality of through holes fixed on the base, a second connecting component slidably mounted on the base, and an air pump fixed on the shell; the air pump and the base are connected by a bellows. The base is provided with a groove which can accommodate a glove, and the height of the first suction cup is greater than the depth of the groove; the cylinder is controlled by the electronic control board to push the base to move; the separation component is used to separate the gloves; the through hole connects the cavity and the groove on the base, and also connects the cavity and the separation component, and the through hole cooperates with the cavity and the air pump to suck the gloves from the storage groove; the second connecting component cooperates with the first connecting component to connect the base and the bottom plate; the air pump is controlled by the electronic control board and is used to extract air; the bellows is made of soft plastic and can be stretched and bent to a certain extent, and is used to connect the base and the air pump; when the extraction mechanism is working, the base will be pushed by the cylinder and close to the end of the storage box with an opening, the groove on the base is aligned with the opening on the storage box, the cavity is connected to the groove on the base through the through hole, and then the air pump can extract the gas in the groove and suck the gloves from the storage groove. Since the gloves are squeezed by the push plate in the storage groove, there may be adhesion, and the separation component can separate the gloves.
[0010] Specifically, the separation assembly includes a first mounting groove fixed on the base, a separation plate slidably arranged on the first mounting groove, a second mounting groove fixed on the base, and a baffle slidably arranged on the second mounting groove; the separation plate and the first mounting groove are connected by a third spring; the baffle and the second mounting groove are connected by a fourth spring. Both sides of the separation plate are provided with inclined surfaces, and the inclined surface facing the storage box is longer; the baffle is provided with an inclined surface, which contacts the inclined surface on one side of the separation plate and is used to block the separation plate; the third spring and the fourth spring are compression springs; the elastic coefficient of the fourth spring is greater than that of the third spring; the through hole is connected to the second mounting groove; the third spring is compressed in the initial state; after the air pump works to extract the gloves, the gloves are adsorbed on the base and block a part of the through hole. At this time, the air pump pumping will drive the baffle to move and compress the fourth spring. When the baffle enters the second mounting groove, the third spring will push the separation plate to slide out of the first mounting groove to perform preliminary separation of the adhered gloves. The inclined surface on the separation plate can make it easier for the separation plate to enter the adhered part of the two gloves.
[0011] Specifically, the first connecting component includes a third mounting groove fixedly arranged on the bottom plate, a first bracket slidably arranged on the third mounting groove, and a rotating shaft fixedly arranged on the first bracket. The first bracket can slide along the third mounting groove, one end of the rotating shaft is rotatably arranged on the first bracket, and the other end is connected to the second connecting component; a torsion spring is arranged on the rotating shaft and the first bracket for resetting the rotating shaft; a sensor is arranged on the rotating shaft, which can transmit a signal to stop the air pump when touched by a hand.
[0012] Specifically, the pneumatic assembly includes an airbag fixed on the first slide groove, a one-way valve fixed on the airbag and the bottom plate, and a first sealing plug fixed on the first bracket; the first bracket and the bottom plate are connected by a fifth spring. The airbag is fixed on the first slide groove; the first sealing plug is used to seal the airbag; the one-way valve is one-way, and the gas in the airbag can only be discharged from the one-way valve, and the outside air cannot enter the airbag from the one-way valve; the fifth spring is used to reset the first bracket and the first sealing plug.
[0013] Specifically, the second connection assembly includes a second bracket slidably arranged on the base, a limit block slidably arranged on the second bracket, a traction rope fixedly arranged on the limit block and the base, a first air guide groove fixedly arranged on the base, a second sealing plug fixedly arranged on the second bracket, and a second air guide groove fixedly arranged on the base; the limit block and the second bracket are connected by a sixth spring; the second sealing plug and the base are connected by a seventh spring. The second bracket is slidably arranged on the base; the limit block can slide on the second bracket, and when connected to the first connection assembly, the limit block limits the rotation shaft; the traction rope is used to pull the limit block on one side to release the limit of the limit block on the rotation shaft; the first air guide groove connects the outside world and the cavity; the second sealing plug is used to seal the first air guide groove; the second air guide groove is used to connect the outside world and the first air guide groove; the second bracket is provided with a protrusion, which is embedded in the second air guide groove in the initial state to block the second air guide groove; the sixth spring is used to reset the limit block; the seventh spring is used to reset the second bracket and the second sealing plug.
[0014] The beneficial effects of the present invention are:
[0015] (1) The first suction cup and the base in the donning mechanism and the extraction mechanism are arranged vertically with the thumb facing upward. Compared with the existing automatic donning device for gloves, it is not necessary to distinguish between the left and right hands, thus avoiding misalignment of the gloves.
[0016] (2) The first connecting component and the second connecting component can make the glove into an inverted "V" shape, thereby enlarging the glove opening and making it easier to wear.
[0017] (3) The gloves are stored in the storage box and squeezed by the push plate, causing adhesion. The separation component can separate the adhered gloves when the air pump sucks the gloves. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.
[0019] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.
[0020] In the attached picture:
[0021] Figure 1 It is a structural schematic diagram of the present invention;
[0022] Figure 2 It is a front view of the present invention;
[0023] Figure 3 for Figure 2 Line section of AA in the middle;
[0024] Figure 4 This is a top view of the present invention after removing the shell;
[0025] Figure 5 It is a front view of the storage mechanism;
[0026] Figure 6 for Figure 5 Linear section of the middle BB;
[0027] Figure 7 for Figure 6 A partial enlarged view of point C in the middle;
[0028] Figure 8 for Figure 6 A partial enlarged view of point D in the middle;
[0029] Fig. 9 is a top view of the wearing mechanism;
[0030] Fig.10 for Fig. 9 Line section of the middle FF;
[0031] Fig.11 for Fig.10 A partial enlarged view of the G in the middle;
[0032] Fig.12 for Fig. 9 Line section of HH. DETAILED DESCRIPTION
[0033] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.
[0034] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.
[0035] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.
[0036] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".
[0037] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.
[0038] Reference Figure 1-12 As shown, an automatic glove donning device according to the present invention comprises a shell 1, a storage mechanism 2 slidably arranged on the shell, a moving mechanism 3 fixedly arranged on the shell, an extraction mechanism 4 slidably arranged on the moving mechanism, a donning mechanism 5 fixedly arranged on the shell, a donning port 6 fixedly arranged on the shell, and an electric control board 7 fixedly arranged on the shell; the donning mechanism comprises a baffle 51 fixedly arranged on the shell, a bottom plate 52 rotatably arranged on the shell, a first spring 53 symmetrically fixedly arranged on the bottom plate and the shell, a first connecting component 54 slidably arranged on the bottom plate, a first slide groove 55 fixedly arranged on the bottom plate, a first suction cup 56 slidably arranged on the first slide groove, and a pneumatic component 57 fixedly arranged on the first slide groove.
[0039] Specifically, the storage mechanism includes a box body 21 slidably mounted on the shell, a box cover 22 fixedly mounted on the box body, a first groove 23 fixedly mounted on the shell, a storage groove 24 fixedly mounted on the box body, and a pushing assembly 25 slidably mounted on the storage groove.
[0040] Specifically, the pushing assembly includes a push plate 241 slidably arranged on the storage slot, a plurality of telescopic rods 242 fixedly arranged on the box cover and the push plate, and a second spring 243 fixedly arranged on the box cover and the push plate.
[0041] Specifically, the moving mechanism includes a motor 31 fixed on the housing, a threaded rod 32 rotatably arranged on the housing, a guide rod 33 fixed on the housing, and a slider 34 sleeved on the threaded rod and the guide rod.
[0042] Specifically, the extraction mechanism includes a cylinder 41 fixed on the slider, a rotating shaft 42 fixed on the cylinder, a base 43 rotatably sleeved on the rotating shaft, a cavity 44 fixed on the base, a separation component 45 fixed on the base, a plurality of through holes 46 fixed on the base, a second connecting component 47 slidably arranged on the base, and an air pump 48 fixed on the shell; the air pump and the base are connected by a bellows 49.
[0043] Specifically, the separation assembly includes a first mounting groove 451 fixed on the base, a separation plate 452 slidably arranged on the first mounting groove, a second mounting groove 453 fixed on the base, and a baffle 454 slidably arranged on the second mounting groove; the separation plate and the first mounting groove are connected by a third spring 455; the baffle and the second mounting groove are connected by a fourth spring 456.
[0044] Specifically, the first connecting assembly includes a third mounting groove 541 fixedly disposed on the bottom plate, a first bracket 542 slidably disposed on the third mounting groove, and a rotating shaft 543 fixedly disposed on the first bracket.
[0045] Specifically, the pneumatic assembly includes an airbag 571 fixed on the first slide groove, a one-way valve 572 fixed on the airbag and the bottom plate, and a first sealing plug 573 fixed on the first bracket; the first bracket and the bottom plate are connected by a fifth spring 574.
[0046] Specifically, the second connecting assembly includes a second bracket 471 slidably arranged on the base, a limit block 472 slidably arranged on the second bracket, a traction rope 473 fixedly arranged on the limit block and the base, a first air guide groove 474 fixedly arranged on the base, a second sealing plug 475 fixedly arranged on the second bracket, and a second air guide groove 476 fixedly arranged on the base; the limit block and the second bracket are connected by a sixth spring 477; the second sealing plug and the base are connected by a seventh spring 478.
[0047] In the initial state, the slider is located on the side close to the storage box, the cylinder does not work, and the base does not contact the storage box. When in use, take down the storage box, open the box cover, put the gloves in order and put them into the storage slot, close the box cover, the gloves will push the push plate to shrink the telescopic rod, the second spring will be compressed, and the second spring will exert a reaction force on the push plate, and then the push plate will push the gloves to close to one end of the storage box opening, install the storage box, and insert the protrusion on the box cover into the first groove. At this time, one end of the storage box opening is aligned with the base, and the electronic control board controls the cylinder to work, pushing the base close to the storage box, and the air pump works to extract the air from the cavity. Since the second bracket is limited by the base, it will not move during air extraction, and the second sealing plug will block the first air guide groove. The air pump sucks the gloves into the storage box. When the gloves are sucked into the base and block some of the through holes, the air pump will drive the baffle to move and compress the fourth spring. When the baffle enters the second mounting groove, the third spring will push the separation plate to slide out of the first mounting groove to separate the stuck gloves. Then the cylinder will retract to separate the base from the storage box. The motor will work to drive the slider to slide. When it moves to align with the bottom plate, the motor will stop working. The cylinder will work to push the base close to the bottom plate. Since the height of the first suction cup is greater than the depth of the base groove, the base groove will first contact the first suction cup to form a "base-glove-first suction cup" structure. The glove will block the through hole on the first suction cup, and then the base will continue to move toward the bottom plate. The first suction cup is pushed to move, and the first suction cup squeezes the airbag, so that the gas in the airbag is discharged from the one-way valve, and the external air pressure will press the glove on the first suction cup. At this time, both sides of the glove are fixed, one side is sucked by the air pump and attached to the base, and the other side is pressed on the first suction cup by the external air pressure. In the process of the base moving toward the bottom plate, the first connecting component contacts the second connecting component, and the rotating shaft on the first connecting component contacts the limit block on the second connecting component. The rotating shaft squeezes the limit block to move the limit block, and the sixth spring is compressed. When the rotating shaft enters the second bracket, the sixth spring is reset, pushing the limit block to reset, and limiting the rotating shaft. At this time, one end of the rotating shaft is on the first bracket, and the other end is on the second bracket, and the base and the bottom plate can be moved around The rotating shaft rotates; when the base and the bottom plate are completely in contact, the cylinder works to move the base away from the bottom plate. Since the bottom plate and one end of the base are connected by the first connecting component and the second connecting component at this time, during the movement, the base and the bottom plate will rotate with the rotating shaft as the axis, and the end that is not connected will open, and the base and the bottom plate will form an inverted "V" shape, with the end with a larger opening aligned with the wearing opening, and the user can put on the glove by inserting his hand from the wearing opening. After putting on the glove, the user continues to extend his hand inward to push the rotating shaft to move inward, and the rotating shaft will pull the first bracket and the second bracket to move; the movement of the first bracket will pull the first sealing plug, so that the outside air enters the airbag, so that the air pressure inside and outside the airbag is balanced, and the glove on one side of the first suction cup falls off;The movement of the second bracket will pull the second sealing plug, and the outside air will enter the cavity from the first air guide groove and the second air guide groove, so that the air pressure in the cavity is balanced with the outside air pressure. At the same time, a sensor is provided on the shaft, which can transmit a signal to stop the air pump when the hand touches it, and the gloves on one side of the base will fall off, and the gloves will be completely worn on the user's hand; because one side of the traction rope is connected to the base and the other side is connected to a limit block, when the second bracket moves, the traction rope will pull a limit block to move, release the limit of the limit block on the shaft, and when the cylinder drives the base to move, the shaft will be separated from the second bracket, and the first connecting component and the second connecting component will be disconnected. ;
[0048] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.
Claims
1. A glove automatic donning device, characterized in that: The invention comprises a shell (1), a storage mechanism (2) slidably arranged on the shell, a moving mechanism (3) fixedly arranged on the shell, an extraction mechanism (4) slidably arranged on the moving mechanism, a wearing mechanism (5) fixedly arranged on the shell, a wearing port (6) fixedly arranged on the shell, and an electric control panel (7) fixedly arranged on the shell; the wearing mechanism comprises a baffle (51) fixedly arranged on the shell, a bottom plate (52) rotatably arranged on the shell, a first spring (53) symmetrically fixedly arranged on the bottom plate and the shell, a first connecting component (54) slidably arranged on the bottom plate, a first slide groove (55) fixedly arranged on the bottom plate, a first suction cup (56) slidably arranged on the first slide groove, and a pneumatic component (57) fixedly arranged on the first slide groove.
2. The automatic glove donning device according to claim 1, characterized in that: The storage mechanism comprises a box body (21) slidably arranged on the shell, a box cover (22) fixedly arranged on the box body, a first groove (23) fixedly arranged on the shell, a storage groove (24) fixedly arranged on the box body, and a pushing component (25) slidably arranged on the storage groove.
3. The automatic glove donning device according to claim 2, characterized in that: The pushing assembly comprises a push plate (241) slidably arranged on the storage groove, a plurality of telescopic rods (242) fixedly arranged on the box cover and the push plate, and a second spring (243) fixedly arranged on the box cover and the push plate.
4. The automatic glove donning device according to claim 1, characterized in that: The moving mechanism comprises a motor (31) fixedly mounted on the housing, a threaded rod (32) rotatably mounted on the housing, a guide rod (33) fixedly mounted on the housing, and a slider (34) sleeved on the threaded rod and the guide rod.
5. The automatic glove donning device according to claim 4, characterized in that: The extraction mechanism comprises a cylinder (41) fixed on a slider, a rotating shaft (42) fixed on the cylinder, a base (43) rotatably sleeved on the rotating shaft, a cavity (44) fixed on the base, a separation component (45) fixed on the base, a plurality of through holes (46) fixed on the base, a second connection component (47) slidably arranged on the base, and an air pump (48) fixed on the housing; the air pump and the base are connected via a bellows (49).
6. The automatic glove donning device according to claim 5, characterized in that: The separation assembly comprises a first mounting groove (451) fixedly arranged on the base, a separation plate (452) slidably arranged on the first mounting groove, a second mounting groove (453) fixedly arranged on the base, and a baffle plate (454) slidably arranged on the second mounting groove; the separation plate and the first mounting groove are connected via a third spring (455); and the baffle plate and the second mounting groove are connected via a fourth spring (456).
7. The automatic glove donning device according to claim 1, characterized in that: The first connecting component comprises a third mounting groove (541) fixedly arranged on the bottom plate, a first bracket (542) slidably arranged on the third mounting groove, and a rotating shaft (543) fixedly arranged on the first bracket.
8. The automatic glove donning device according to claim 7, characterized in that: The pneumatic assembly comprises an air bag (571) fixed on the first slide groove, a one-way valve (572) fixed on the air bag and the bottom plate, and a first sealing plug (573) fixed on the first bracket; the first bracket and the bottom plate are connected via a fifth spring (574).
9. The automatic glove donning device according to claim 5, characterized in that: The second connecting component comprises a second bracket (471) slidably arranged on the base, a limit block (472) slidably arranged on the second bracket, a traction rope (473) fixedly arranged on the limit block and the base, a first air guide groove (474) fixedly arranged on the base, a second sealing plug (475) fixedly arranged on the second bracket, and a second air guide groove (476) fixedly arranged on the base; the limit block and the second bracket are connected via a sixth spring (477); the second sealing plug and the base are connected via a seventh spring (478).