Push type switch

Abstract

The utility model relates to a push type switch, and belongs to the technical field of air purification. The push type switch comprises a shell which is provided with a hollow cavity, and a microswitch is arranged in the shell; the lifting assembly is arranged on the hollow cavity in a lifting mode, and the lifting assembly has an opening state for opening the air outlet and a closing state for closing the air outlet; and the lifting assembly is switched between the opening state and the closing state through the connecting mechanism under the action of external force. According to the scheme, under the action of external force, the combined operation among the microswitch, the lifting assembly and the connecting mechanism can achieve starting and closing of the air purifier, a user can conveniently determine the running state of the air purifier according to the state of the lifting assembly, when the air purifier is not used, it can be guaranteed that the air outlet is in a closed state, and the air purifier is convenient to use. And the cleanliness of the air purifier is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification, in particular to a push-type switch. Background Art

[0002] In the prior art, the air outlet of a conventional air purifier is generally located at the top of the whole machine. The purified air is blown out from the grille of the air outlet and diffused into the indoor air, thereby circulating the air indoors. However, if the air outlet is always open, indoor pollutants will float into the machine from the air outlet when the machine is not running. When the machine is turned on again, the pollutants will be blown out directly from the air outlet and mixed into the indoor air, causing secondary pollution. Utility Model Content

[0003] In order to overcome the problems existing in the related technology, the utility model provides a push-type switch. Under the action of external force, the combined operation of the micro switch, the lifting assembly and the connecting mechanism can realize the start and stop of the air purifier, so that the user can determine the operating status of the air purifier through the status of the lifting assembly. When not in use, the air outlet can be kept in a closed state to ensure the cleanliness of the air purifier.

[0004] The first aspect of the utility model provides a push-type switch for an air purifier, comprising a housing having a hollow cavity, wherein a micro switch is arranged in the housing;

[0005] A lifting component is liftably disposed on the hollow cavity, and the lifting component has an open state for opening the air outlet and a closed state for closing the air outlet;

[0006] A connecting mechanism, through which the lifting assembly switches between the open state and the closed state under the action of an external force;

[0007] Among them, the driving rod of the micro switch is connected to the lifting assembly, and the terminal of the micro switch is connected to the circuit of the air purifier; when the lifting assembly is in an open state, the terminal is connected to the circuit, and when the lifting assembly is in a closed state, the terminal is not connected to the circuit.

[0008] In a possible implementation of the first aspect above, the connection mechanism includes a locking portion and an elastic member;

[0009] When the elastic member is in a compressed state, the locking portion locks the lifting assembly in a first locking position in the open state;

[0010] When the elastic member is in a relaxed state, the hollow cavity locks the lifting assembly in a second locking position in the closed state.

[0011] In a possible implementation of the first aspect above, the locking portion includes a lock head and a door lock switch, the lock head is arranged on the lifting assembly, the door lock switch is arranged in the shell, the door lock switch is coaxial with the lock head, and the door lock switch includes a buckle, and when the buckle is fastened and assembled with the lock head, the lifting assembly is located in the first locking position.

[0012] In a possible implementation of the first aspect above, the door lock switch also includes a housing, a pull rod and a spring, the first end of the spring abuts against the bottom wall of the housing, the second end is connected to the pull rod, and the buckle is connected to the spring through the pull rod.

[0013] In a possible implementation of the first aspect above, the shell includes an outer shell and an inner shell, the outer shell has a chamber for accommodating the inner shell, the micro switch is arranged on the inner shell, the first end of the outer shell is provided with the hollow cavity, the hollow cavity includes a large-diameter chamber and a small-diameter chamber coaxially arranged, the bottom wall of the large-diameter chamber is provided with a hollow structure, the bottom wall of the small-diameter chamber is provided with a plurality of sliding holes and plug-in holes, the plug-in holes correspond to the lock head, the lock head and the door lock switch lock the lifting assembly in the first locking position through the plug-in hole, and the lifting assembly is locked in the second locking position through the sliding hole.

[0014] In a possible implementation of the first aspect, the lifting assembly includes a pressing portion and a locking portion, the pressing portion is slidably matched with the small-diameter chamber, the pressing portion is provided with a hollow chamber, the locking portion is slidably matched with the pressing portion, and the first end of the locking portion is located in the hollow chamber, the second end of the locking portion is exposed in the hollow chamber and penetrates the sliding hole; the second end of the locking portion is provided with a plurality of slots;

[0015] The small-diameter chamber is provided with a plurality of limit buckles matched with the clamping slots;

[0016] The lock head is connected to the pressing portion.

[0017] In a possible implementation of the first aspect, the pressing portion includes a top cover and a sliding sleeve, the top cover is adapted to the size of the large-diameter chamber, and a first annular flange and a second annular flange are provided on the top cover;

[0018] One end of the sliding sleeve is radially enlarged to form an opening abutting against the first annular flange, and the second annular flange is provided with an inserting groove;

[0019] A plurality of plates are provided on the inner wall of the sliding sleeve, and a plurality of first guide ribs are provided on the plates along the axial direction. A protrusion matching with the plug-in slot is also provided at one end of the plates close to the top cover;

[0020] A plurality of shaft holes are provided on the bottom wall of the sliding sleeve, and the locking portion passes through the shaft holes;

[0021] The sliding sleeve is connected to the micro switch, and the locking head is connected to the bottom end surface of the sliding sleeve.

[0022] In a possible implementation of the first aspect above, the locking portion includes a seat body, a plurality of plug-in plates are provided on the outer periphery of the seat body, a second guide rib is provided on the outer periphery of the plug-in plates for slidingly cooperating with the first guide rib, the seat body is located in the sliding sleeve, the plug-in plates are passed through the axial hole, and the plug-in plates are provided with the protrusion.

[0023] In a possible implementation of the first aspect above, a filter box is further included, which is arranged in the shell and has a first opening and a second opening. A filter assembly is provided between the first opening and the second opening. The first opening is the air outlet, and the second opening faces the air inlet end of the air purifier.

[0024] In a possible implementation of the first aspect above, a driving assembly is further included, wherein the driving assembly includes a motor, a transmission tooth and a transmission rack, the motor is arranged in the shell, the rotating shaft of the motor is connected to the transmission tooth, and the transmission rack is arranged on the lifting assembly along the axial direction of the lifting assembly.

[0025] The technical solution provided by the utility model may have the following beneficial effects:

[0026] The push-type switch provided by the utility model comprises a shell, a lifting assembly, and a connecting mechanism, wherein a micro switch arranged in the shell is connected to the lifting assembly, and the lifting assembly is switched between an open state and a closed state through the connecting mechanism under the action of an external force, and when the lifting assembly is in an open state, the terminal of the micro switch is connected to the circuit of the air purifier, thereby starting the air purifier, and when the lifting assembly is in a closed state, the terminal of the micro switch is disconnected from the circuit of the air purifier, thereby ensuring that the air outlet is in a closed state when the air purifier is not in use, effectively solving the problem of external pollutants entering the interior of the air purifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0028] Figure 1 It is a schematic diagram of the overall structure of a push-type switch shown in an embodiment of the utility model;

[0029] Figure 2 is a cross-sectional view of a push-type switch shown in an embodiment of the utility model;

[0030] Figure 3 It is a schematic diagram of the assembly of the lifting assembly shown in the embodiment of the utility model;

[0031] Figure 4 It is a structural schematic diagram of a door lock switch shown in an embodiment of the utility model;

[0032] Figure 5 It is a schematic diagram of the structure of the housing shown in an embodiment of the utility model;

[0033] Figure 6 It is another structural schematic diagram of the lifting assembly shown in the embodiment of the utility model;

[0034] Figure 7 It is a schematic diagram of the structure of the top cover shown in the embodiment of the utility model;

[0035] Figure 8 It is a schematic diagram of the structure of the sliding sleeve shown in an embodiment of the utility model;

[0036] Fig. 9 It is a schematic structural diagram of a locking portion shown in an embodiment of the utility model.

[0037] Description of reference numerals:

[0038] 1. Shell; 11. Micro switch; 12. Outer shell; 121. Hollow cavity; 122. Large diameter chamber; 123. Small diameter chamber; 123a. Sliding hole; 123b. Plug hole; 123c. Limit buckle; 13. Inner shell;

[0039] 2. Lifting assembly; 21. Pressing portion; 211. Top cover; 211a. First annular flange; 211b. Second annular flange; 211. Insertion groove; 212. Sliding sleeve; 214. Plate body; 215. First guide rib; 216. Protrusion; 217. Shaft hole; 22. Locking portion; 221. Slot; 222. Seat body; 223. Insertion plate; 223a. Second guide rib;

[0040] 3. Connecting mechanism; 31. Locking part; 311. Lock head; 312. Door lock switch; 312a. Buckle; 312b. Housing; 312c. Pull rod; 312d. Spring; 32. Elastic member;

[0041] 4. Filter box. DETAILED DESCRIPTION

[0042] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0043] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] In the prior art, traditional air conditioning and refrigeration use steam compression refrigeration units, in which the effective utilization rate of the heat exchange area of ​​the evaporative condenser is low, and the flow resistance of the inner working medium is large. For example, in the plate-tube evaporative condenser, the liquid working medium in the heat exchange plate tube cannot be discharged in time, occupying the original heat exchange area, resulting in a reduction in the heat exchange area between the gas phase working medium and the outer cooling medium, resulting in an increase in the energy consumption of the refrigeration unit.

[0047] In response to the above problems, the utility model provides a push-type switch. Under the action of external force, the combined operation of the micro switch 11, the lifting assembly 2 and the connecting mechanism 3 can realize the start and stop of the air purifier, so that the user can determine the operating status of the air purifier through the status of the lifting assembly 2. When not in use, the air outlet can be kept in a closed state to ensure the cleanliness of the air purifier.

[0048] The technical solution of the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0049] Figure 1 It is a schematic diagram of the overall structure of a push-type switch shown in an embodiment of the utility model;

[0050] Figure 2 It is a cross-sectional view of a push switch shown in an embodiment of the utility model.

[0051] See also Figure 1 to Figure 2 , a push-type switch provided by an embodiment of the utility model is used for an air purifier, comprising a housing 1 having a hollow cavity 121, wherein a micro switch 11 is arranged in the housing 1;

[0052] A lifting assembly 2 is liftably disposed on the hollow cavity 121, and the lifting assembly 2 has an open state for opening the air outlet and a closed state for closing the air outlet;

[0053] A connecting mechanism 3, through which the lifting assembly 2 is switched between the open state and the closed state under the action of an external force;

[0054] Among them, the driving rod of the micro switch 11 is connected to the lifting component 2, and the terminal of the micro switch 11 is connected to the circuit of the air purifier; when the lifting component 2 is in an open state, the terminal is connected to the circuit, and when the lifting component 2 is in a closed state, the terminal is not connected to the circuit.

[0055] When the push-type switch in this embodiment is used, the lifting assembly 2 switches between the open state and the closed state through the connecting mechanism 3 under the action of external force. When the lifting assembly 2 is in the open state, the terminal of the micro switch 11 is connected to the circuit of the air purifier, thereby starting the air purifier. At this time, the air outlet between the lifting assembly 2 and the shell is in the open state, and air can enter the air purifier from the air outlet. When the lifting assembly 2 is in the closed state, the terminal of the micro switch 11 is disconnected from the circuit of the air purifier, ensuring that the air outlet is in the closed state when the air purifier is not in use, effectively solving the problem of external pollutants entering the air purifier.

[0056] In this embodiment, the micro switch belongs to the application of the prior art, and the embodiment of the present application briefly describes the working principle of the micro switch.

[0057] The micro switch 11 moves under the action of external force, and the external force is applied to the action spring through the driving rod. When the action spring moves to the critical point, an instantaneous action is generated, so that the terminal at the end of the spring is quickly connected or disconnected with the fixed contact (circuit of the air purifier), thereby starting the air purifier.

[0058] In one possible implementation, see Figure 3 , and combined with Figure 2 , the connecting mechanism 3 of the push switch comprises a locking portion 31 and an elastic member 32;

[0059] When the elastic member 32 is in a compressed state, the locking portion 31 locks the lifting assembly 2 in a first locking position in the open state;

[0060] When the elastic member 32 is in the expanded state, the hollow cavity 121 locks the lifting assembly 2 in the second locking position in the closed state.

[0061] The elastic member 32 provides the lifting power for the lifting assembly 2. When the initial state of the lifting assembly 2 is the closed state, the connection mechanism 3 locks the lifting assembly 2 in the first locking position. When the lifting assembly 2 is pressed, the connection mechanism 3 releases the lifting assembly 2 under the action of the external force. At this time, the compressed elastic member 32 begins to relax, thereby lifting the lifting assembly 2, and then is locked in the second locking position, realizing the opening state of the air outlet. In the process of the lifting assembly 2 rising, the driving rod is driven to move, thereby connecting the micro switch 11 to the circuit of the air purifier, thereby starting the air purifier.

[0062] When the air purifier needs to be turned off, the lifting assembly 2 is pressed to move it from the second locking position to the first locking position, and then fixed by the connecting mechanism 3, the air outlet is closed, and during the descent of the lifting assembly 2, the drive rod is driven to move, so that the terminal of the micro switch 11 is disconnected from the circuit, thereby turning off the air purifier.

[0063] In a preferred embodiment, the elastic member 32 may be a spring.

[0064] In one possible implementation, see Figure 4 The locking portion 31 of the push-type switch includes a lock head 311 and a door lock switch 312. The lock head 311 is arranged on the lifting assembly 2, and the door lock switch 312 is arranged in the shell 1. The door lock switch 312 is coaxial with the lock head 311. The door lock switch 312 includes a buckle 312a. When the buckle 312a is fastened and assembled with the lock head 311, the lifting assembly 2 is located in the first locking position.

[0065] In a possible implementation, the door lock switch 312 of the push-type switch also includes a housing 312b, a pull rod 312c and a spring 312d, wherein the first end of the spring 312d abuts against the bottom wall of the housing 1, and the second end is connected to the pull rod 312c, and the buckle 312a is connected to the spring 312d via the pull rod 312c.

[0066] Specifically, the specific working principle of the door lock switch 312 is as follows: driven by the lifting assembly 2, the lock head 311 abuts against the buckle 312a. Under the action of external force, the lock head 311 is locked by the buckle 312a under the combined operation of the buckle 312a, the spring 312d and the pull rod 312c, thereby locking the lifting assembly 2 in the first locking position.

[0067] In one possible implementation, see Figure 5 The housing 1 of the push switch comprises an outer housing 121 and an inner housing 13, wherein the outer housing 121 has a chamber for accommodating the inner housing 13, the micro switch 11 is arranged on the inner housing 13, the first end of the outer housing 121 is provided with the hollow cavity 121, the hollow cavity 121 comprises a large-diameter chamber 122 and a small-diameter chamber 123 coaxially arranged, the bottom wall of the large-diameter chamber 122 is provided with a hollow structure, the bottom wall of the small-diameter chamber 123 is provided with a plurality of sliding holes 123a and plugging holes 123b, the plugging holes 123b correspond to the lock head 311, the lock head 311 and the door lock switch 312 lock the lifting assembly 2 in the first locking position through the plugging hole 123b, and the lifting assembly 2 is locked in the second locking position through the sliding hole 123a.

[0068] In one possible implementation, see Figure 6 The lifting assembly 2 of the push switch comprises a pressing portion 21 and a locking portion 22, wherein the pressing portion 21 is slidably matched with the small-diameter chamber 123, the pressing portion 21 is provided with a hollow chamber 121, the locking portion 22 is slidably matched with the pressing portion 21, and the first end of the locking portion 22 is located in the hollow chamber 121, the second end of the locking portion 22 is exposed in the hollow chamber 121, and the sliding hole 123a is penetrated; the second end of the locking portion 22 is provided with a plurality of slots 221;

[0069] The small-diameter chamber 123 is provided with a plurality of limit buckles 312a to 123c that match the slots 221;

[0070] The lock head 311 is connected to the pressing part 21. When the lifting assembly 2 moves upward under the action of the elastic member 32, the limit buckle 312a123c contacts the slot 221, thereby locking the lock buckle part 22 and locking the pressing part 21 in the second locking position.

[0071] In one possible implementation, see Figure 7 and Figure 8The pressing part 21 of the above-mentioned push switch includes a top cover 211 and a sliding sleeve 212. The top cover 211 is adapted to the size of the large-diameter chamber 122. The top cover 211 is provided with a first annular flange 211a and a second annular flange 211b.

[0072] One end of the sliding sleeve 212 is radially enlarged to form an opening abutting against the first annular flange 211a, and the second annular flange 211b is provided with an inserting groove 211;

[0073] A plurality of plates 214 are disposed on the inner wall of the sliding sleeve 212. The plates 214 are provided with a plurality of first guide ribs 215 arranged along the axial direction. The end of the plates 214 close to the top cover 211 is also provided with a protrusion 216 matched with the plug-in slot 211.

[0074] The bottom wall of the sliding sleeve 212 is provided with a plurality of shaft holes 217 , and the locking portion 22 passes through the shaft holes 217 ;

[0075] The sliding sleeve 212 is connected to the micro switch 11 , and the lock head 311 is connected to the bottom end surface of the sliding sleeve 212 .

[0076] In one possible implementation, see Fig. 9 The lock part 22 of the push switch comprises a seat body 222, a plurality of plug-in plates 223 are arranged on the periphery of the seat body 222, a second guide rib 223a is arranged on the periphery of the plug-in plates 223 to slide with the first guide rib 215, the seat body 222 is located in the sliding sleeve 212, the plug-in plates 223 are penetrated by the shaft hole 217, and the plug-in plates 223 are provided with the protrusion 216. When assembling the lifting assembly 2, the lock part 22 is placed on the sliding sleeve 212, the plug-in plates 223 pass through the shaft hole 217, and then the top cover 211 is connected and fixed to the sliding sleeve 212 through the plug-in slot 211 and the protrusion 216.

[0077] In a possible implementation scheme, outdoor air generally contains air pollutants such as smoke, total suspended particulate matter, inhalable particulate matter (PM10), fine particulate matter (PM2.5), aerogel, etc. Directly introducing the outside air into the air purifier through the push-type switch can easily contaminate the air purifier and reduce the service life of the air purifier filtration system. In order to avoid this situation, this embodiment designs a corresponding structure, please refer to Figure 2 The push-type switch further includes a filter box 4, which is disposed in the housing 1 and has a first opening and a second opening, a filter assembly being disposed between the first opening and the second opening, the first opening being the air outlet, and the second opening being toward the air inlet end of the air purifier.

[0078] In actual applications, air purifiers are generally equipped with corresponding filtering systems. In order to prevent the filter box 4 set by the push-type switch from affecting the air intake, in a preferred embodiment, the filter component in the filter box 4 can be set as foam filter cotton. By simply filtering the air through the foam filter cotton, the service life of the filter system can be extended and the user's need to frequently replace the filter system can be reduced.

[0079] In a possible implementation, the push-type switch further includes a driving assembly (not shown), the driving assembly including a motor, a transmission tooth and a transmission rack, the motor being disposed in the housing 1, the rotating shaft of the motor being connected to the transmission tooth, and the transmission rack being disposed on the lifting assembly 2 along the axial direction of the lifting assembly 2.

[0080] Specifically, when this embodiment is applied, the air outlet can be opened and closed by manually pressing the lifting component 2 or by mechanical driving.

[0081] When mechanical drive is adopted, a transmission rack along the axial direction of the lifting component 2 can be provided on the lifting component 2, and a motor can be provided in the housing 1 to realize the lifting and lowering of the lifting component 2.

[0082] In a preferred embodiment, the motor is a stepper motor.

[0083] Furthermore, the drive assembly may also be provided with a corresponding limit structure, such as an optical coupler limiter.

[0084] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A push-type switch for an air purifier, characterized in that: include: The housing has a hollow cavity, and a micro switch is arranged in the housing; A lifting component is liftably disposed on the hollow cavity, and the lifting component has an open state for opening the air outlet and a closed state for closing the air outlet; A connecting mechanism, through which the lifting assembly switches between the open state and the closed state under the action of an external force; Among them, the driving rod of the micro switch is connected to the lifting assembly, and the terminal of the micro switch is connected to the circuit of the air purifier; when the lifting assembly is in an open state, the terminal is connected to the circuit, and when the lifting assembly is in a closed state, the terminal is not connected to the circuit.

2. The push switch according to claim 1, characterized in that: The connecting mechanism comprises a locking portion and an elastic member; When the elastic member is in a compressed state, the locking portion locks the lifting assembly in a first locking position in the open state; When the elastic member is in a relaxed state, the hollow cavity locks the lifting assembly in a second locking position in the closed state.

3. The push switch according to claim 2, characterized in that: The locking portion includes a lock head and a door lock switch, the lock head is arranged on the lifting assembly, the door lock switch is arranged in the shell, the door lock switch is coaxial with the lock head, and the door lock switch includes a buckle. When the buckle is fastened and assembled with the lock head, the lifting assembly is located in the first locking position.

4. The push switch according to claim 3, characterized in that: The door lock switch also includes a shell, a pull rod and a spring. The first end of the spring abuts against the bottom wall of the shell, and the second end is connected to the pull rod. The buckle is connected to the spring through the pull rod.

5. The push switch according to claim 3, characterized in that: The shell comprises an outer shell and an inner shell, the outer shell has a chamber for accommodating the inner shell, the micro switch is arranged on the inner shell, the first end of the outer shell is provided with the hollow cavity, the hollow cavity comprises a large-diameter chamber and a small-diameter chamber coaxially arranged, the bottom wall of the large-diameter chamber is provided with a hollow structure, the bottom wall of the small-diameter chamber is provided with a plurality of sliding holes and plug-in holes, the plug-in holes correspond to the lock head, the lock head and the door lock switch lock the lifting assembly in the first locking position through the plug-in hole, and the lifting assembly is locked in the second locking position through the sliding hole.

6. The push switch according to claim 5, characterized in that: The lifting assembly comprises a pressing part and a locking part, the pressing part is slidably matched with the small-diameter chamber, the pressing part is provided with a hollow chamber, the locking part is slidably matched with the pressing part, and the first end of the locking part is located in the hollow chamber, the second end of the locking part is exposed in the hollow chamber and penetrates the sliding hole; the second end of the locking part is provided with a plurality of slots; The small-diameter chamber is provided with a plurality of limit buckles matched with the clamping slots; The lock head is connected to the pressing portion.

7. The push switch according to claim 6, characterized in that: The pressing part includes a top cover and a sliding sleeve, the top cover is adapted to the size of the large-diameter chamber, and a first annular flange and a second annular flange are provided on the top cover; One end of the sliding sleeve is radially enlarged to form an opening abutting against the first annular flange, and the second annular flange is provided with an inserting groove; A plurality of plates are provided on the inner wall of the sliding sleeve, and a plurality of first guide ribs are provided on the plates along the axial direction. A protrusion matching with the plug-in slot is also provided at one end of the plates close to the top cover; A plurality of shaft holes are provided on the bottom wall of the sliding sleeve, and the locking portion passes through the shaft holes; The sliding sleeve is connected to the micro switch, and the locking head is connected to the bottom end surface of the sliding sleeve.

8. The push switch according to claim 7, characterized in that: The locking part includes a seat body, a plurality of plug-in plates are provided on the periphery of the seat body, a second guide rib is provided on the periphery of the plug-in plates for slidingly cooperating with the first guide rib, the seat body is located in the sliding sleeve, the plug-in plates are penetrated by the shaft hole, and the plug-in plates are provided with the protrusion.

9. The push switch according to claim 1, characterized in that: It also includes a filter box, which is arranged in the shell and has a first opening and a second opening. A filter assembly is arranged between the first opening and the second opening. The first opening is the air outlet, and the second opening faces the air inlet end of the air purifier.

10. The push switch according to any one of claims 1 to 9, characterized in that: It also includes a driving component, which includes a motor, a transmission tooth and a transmission rack. The motor is arranged in the shell, the rotating shaft of the motor is connected to the transmission tooth, and the transmission rack is arranged on the lifting component along the axial direction of the lifting component.

Images