Aerosol generating device with isolated electric contact points

Abstract

The utility model discloses an aerosol generating device with isolated electric contact points. The aerosol generating device comprises a fixed seat, a rotating mechanism rotationally connected with the fixed seat, and a suction nozzle assembly rotationally connected with the fixed seat, the rotating mechanism is arranged between the fixed seat and the suction nozzle assembly; a sliding groove is formed in the end, facing the rotating mechanism, of the fixing base. The rotating mechanism is provided with an air inlet, and the air inlet is located in the sliding groove and connected with the sliding groove in a sliding mode. The rotating mechanism and the fixed seat rotate relatively, the air inlet and the first electric contact point are arranged at the end, facing the fixed seat, of the rotating mechanism, the sliding groove and the second electric contact point are arranged at the end, facing the rotating mechanism, of the fixed seat, and the air inlet moves in the sliding groove. The first electric contact point is electrically connected with the second electric contact point; height differences are formed between the air inlet and the first electric contact point and between the air inlet and the second electric contact point, so that isolation is formed between the air inlet and the electric contact points, and leaked oil or condensate flowing out of the air inlet is prevented from polluting the electric contact points.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic atomization equipment, and more specifically to an aerosol generating device with isolated electrical contact points. Background Art

[0002] Existing e-cigarettes basically come with one flavor, and if users want to taste multiple flavors, they need to buy multiple cartridges or e-cigarettes. This not only increases the cost for users, but also makes e-cigarettes lack flexibility.

[0003] Chinese patent CN220607357U discloses an electronic cigarette with a rotatable oil tank. A sucking nozzle is installed above the atomizing body for users to suck, and the lower end of the atomizing body is installed on the battery compartment body for power supply. The partition baffle is fixedly connected to the shaft column through pipe, and a rotating tooth plate is provided below the partition baffle. The bottom of the rotating tooth plate is provided with a large slot and a small slot. The atomizing body of this electronic cigarette can be rotated and adjusted, so that users can choose different flavors to suck according to their needs when using it, which increases the user's experience; and when the atomizing body is adjusted, the sucking nozzle and the battery compartment body can remain stationary, and the atomizing body can be adjusted independently, which is not only convenient for users to adjust while using, but also simpler to operate, which can enhance the user's experience; the liquid storage tank and the mist outlet are straight-through airways, which effectively avoid the problem of smoke odor and increase the user's sucking taste and sucking experience; the whole is easy to disassemble and replace, which is more practical and convenient.

[0004] In the above patent, the atomizing body and the battery compartment body can rotate relative to each other, the upper electrode point of the liquid storage tank is electrically connected to the lower electrode point of the battery compartment, and the air outlet of the battery compartment is connected to the air inlet of the liquid storage tank. The lower electrode point and the air outlet of the battery compartment are located in the same plane and are close to each other. Therefore, the leakage or condensation at the air inlet of the liquid storage tank can easily flow to the contact point between the upper electrode point and the lower electrode point, which can easily cause leakage or short circuit at the electrical contact point. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of the prior art and provide an aerosol generating device with isolated electrical contact points.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An aerosol generating device with isolated electrical contact points comprises a fixed seat, a rotating mechanism rotatably connected to the fixed seat, and a suction nozzle assembly rotatably connected to the fixed seat; the rotating mechanism is arranged between the fixed seat and the suction nozzle assembly; a sliding groove is arranged at one end of the fixed seat facing the rotating mechanism; the rotating mechanism is provided with an air inlet, and the air inlet is slidably connected in the sliding groove.

[0008] Its further technical solution is: a fixed shaft is arranged at one end of the fixed seat facing the rotating mechanism; the rotating mechanism is rotatably connected to the fixed shaft; and the suction nozzle assembly is connected to one end of the fixed shaft away from the fixed seat.

[0009] Its further technical solution is: the rotating mechanism includes a mounting frame, at least two atomizer bombs detachably connected to the mounting frame; the mounting frame is provided with a rotating hole rotatably connected to a fixed axis; the atomizer bombs are rotationally symmetrically arranged on the mounting frame with the rotating hole as the center.

[0010] A further technical solution is as follows: the air inlet is arranged at one end of the atomizing bomb facing the fixing seat; the air inlet protrudes from the end of the atomizing bomb.

[0011] A further technical solution is as follows: a first electrical contact point is arranged at one end of the atomizing bomb corresponding to the fixing seat; and a height difference is arranged between the first electrical contact point and the air inlet in the axial direction of the rotating mechanism.

[0012] A further technical solution is as follows: the fixing seat is provided with a second electrical contact point electrically connected to the first electrical contact point; and a height difference is provided between the second electrical contact point and the sliding groove in the axial direction of the fixing seat.

[0013] A further technical solution is: the second electrical contact point is located on the rotation track of the first electrical contact point.

[0014] A further technical solution is: a certain distance is set between the rotation trajectory of the first electrical contact point and the rotation trajectory of the air inlet.

[0015] A further technical solution is as follows: the fixing seat is provided with an air inlet passage; and the air outlet end of the air inlet passage is arranged in the sliding groove.

[0016] A further technical solution is: oil-absorbing cotton is arranged at a position of the fixing seat close to the air inlet passage; or oil-absorbing cotton is arranged at the bottom of the sliding groove.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: the rotating mechanism of the utility model and the fixed seat can rotate relative to each other, an air inlet and a first electrical contact point are arranged at the end of the rotating mechanism facing the fixed seat, a sliding groove and a second electrical contact point are arranged at the end of the fixed seat facing the rotating mechanism, the air inlet is located in the sliding groove and moves, and the first electrical contact point is electrically connected to the second electrical contact point; a height difference is formed between the contact points of the air inlet and the first electrical contact point and the second electrical contact point, so that the air inlet and the electrical contact points are isolated to prevent oil leakage or condensate flowing out of the air inlet from polluting the electrical contact points.

[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a fixing base of an aerosol generating device with isolated electrical contacts of the utility model;

[0020] Figure 2 This is a structural diagram of a rotating mechanism of an aerosol generating device with isolated electrical contacts of the utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between a fixed base and a rotating mechanism of an aerosol generating device with isolated electrical contacts of the utility model;

[0022] Figure 4 The utility model is an exploded view of an aerosol generating device with isolated electrical contacts. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0030] Figures 1 to 4 It is the accompanying drawing of the utility model.

[0031] This embodiment provides an aerosol generating device with isolated electrical contacts. Figures 1 to 4, including a fixed seat 10, a rotating mechanism 20 rotatably connected to the fixed seat 10, and a suction nozzle assembly 30 rotatably connected to the fixed seat 10. The rotating mechanism 20 is arranged between the fixed seat 10 and the suction nozzle assembly 30. From one end of the device to the other end, the fixed seat 10, the rotating mechanism 20 and the suction nozzle assembly 30 are arranged in sequence from bottom to top, so that they have a corresponding working relationship with each other. The rotating mechanism 20 can have a rotational movement relative to the fixed seat 10 and the suction nozzle assembly 30, so that the rotating mechanism 20 has different working states at different working positions.

[0032] The fixed seat 10 is provided with a sliding groove 11 at one end facing the rotating mechanism 20. The rotating mechanism 20 is provided with an air inlet 221, and the air inlet 221 is located in the sliding groove 11. The sliding groove 11 is an annular groove. If the rotating mechanism 20 rotates around the center line of the device, the sliding groove 11 is a circular groove. The air inlet 221 of the rotating mechanism 20 extends into the sliding groove 11 and moves along the sliding groove 11. The sliding groove 11 is provided with an air inlet channel 16 connected to the outside, and the air outlet end of the air inlet channel 16 is provided in the sliding groove 11, and the air inlet 221 is connected with the air inlet channel 16 to form an air flow channel.

[0033] A fixed shaft 12 is provided at one end of the fixed seat 10 facing the rotating mechanism 20. The rotating mechanism 20 is rotatably connected to the fixed shaft 12. The nozzle assembly 30 is provided at one end of the fixed shaft 12 away from the fixed seat 10, the rotating mechanism 20 is inserted into the fixed shaft 12, and then the nozzle assembly 30 is connected to the fixed shaft 12. Specifically, the fixed seat 10 extends the fixed shaft 12 toward one end of the rotating mechanism 20, then penetrates the rotating mechanism 20, and is connected to the nozzle assembly 30 at the end of the fixed shaft 12, so that the rotating mechanism 20 can rotate relative to the fixed seat 10 and the nozzle assembly 30.

[0034] In one embodiment, the nozzle assembly 30 is rotationally connected to the fixed shaft 12. The nozzle assembly 30 is rotationally connected to the fixed shaft 12, so that the nozzle assembly 30 can rotate relative to the rotating mechanism 20 and the fixed seat 10. Specifically, the nozzle assembly 30 includes a nozzle portion 31 and a connecting member 32 rotationally connected to the fixed shaft 12. The nozzle portion 31 is fixedly connected to the connecting member 32, so that the nozzle portion 31 and the connecting member 32 can rotate together around the fixed shaft 12. The nozzle portion 31 is provided with an air outlet 311, and during the rotation of the nozzle assembly 30, the air outlet 311 corresponds to the air outlet end on the rotating mechanism 20.

[0035] More specifically, the nozzle assembly 30 further includes a fixing member 33 fixedly connected to the fixed shaft 12, and an elastic member 34 disposed between the fixing member 33 and the connecting member 32. The fixing member 33 is fixed to the end of the fixed shaft 12, and the connecting member 32 is sleeved on the outside of the fixed shaft 12, so that the fixing member 33 restricts the connecting member 32 from sliding out of the fixed shaft 12. The connecting member 32 is connected to the fixed shaft 12 through a stepped hole, so one end of the elastic member 34 abuts against the connecting member 32, and the other end abuts against the fixing member 33, so that the connecting member 32 can be prevented from falling off from the fixed shaft 12 under the elastic action of the elastic member 34, and the connecting member 12 can be more closely fitted to the rotating mechanism 20.

[0036] In another embodiment, the suction nozzle assembly 30 is fixed to the end of the fixed shaft 12. Similarly, the suction nozzle assembly 30 is provided with an air outlet 311. After the suction nozzle assembly 30 is fixed to the fixed shaft 12, the air outlet 311 and the air inlet channel 16 of the base 10 are located on the same straight line, so that after the rotating mechanism 20 is turned to the working position, the atomization channel in the rotating mechanism 20 connects the air outlet 311 and the air inlet channel 16, and the atomization bomb 22 of the rotating mechanism 20 can enter the working state; or after the rotating mechanism 20 is rotated, the air outlet 311 and the air inlet channel 16 of the base 10 can be connected to each other. Therefore, after the suction nozzle assembly 30 is fixed to the fixed shaft 12, the purpose of switching flavors can be achieved by simply rotating the rotating mechanism 20.

[0037] The rotating mechanism 20 includes a mounting frame 21, and at least two atomizer bombs 22 that are detachably or fixedly connected to the mounting frame 21. The atomizer bombs 22 are arranged as at least two, which can be three, four, five, etc., and are arranged on the mounting frame 21 in a rotationally symmetrical manner, so that different atomizer bombs 22 can be switched by rotating, and different atomizer bombs 22 can store different flavors of e-liquid to achieve the switching of different flavors. The mounting frame 21 is provided with a rotating hole 211 that is rotationally connected to the fixed shaft 12, and the rotating hole 211 is arranged in the middle position of the mounting frame 21. The atomizer bombs 22 are arranged circumferentially outside the rotating hole 211, and each atomizer bomb 22 is evenly spaced, that is, the atomizer bomb 22 is arranged in a rotationally symmetrical manner with the rotating hole 211 as the center, so that the atomizer bomb 22 can be in the working position after the rotating mechanism 20 rotates the same angle. The fixed shaft 12 passes through the rotating hole 211, so that the rotating mechanism 20 can be rotationally connected to the fixed shaft 12. The air inlet 221 is arranged at one end of the atomizer bomb 22 facing the fixed seat 10. The atomizing bomb 22 is provided with an atomizing channel running through both ends, wherein the end of the atomizing channel close to the fixing base 10 is an air inlet 221, and the end close to the suction nozzle assembly 30 is an air outlet 222. The air inlet channel 16 of the fixing base 10, the atomizing channel of the atomizing bomb 22 and the air outlet 311 of the suction nozzle assembly 30 form an airway of the device.

[0038] The mounting frame 21 is provided with a fixing cavity 212 for mounting the atomizing bomb 22. The shape of the fixing cavity 212 matches the outer contour of the atomizing bomb 22.

[0039] After the atomizer 22 is filled with smoke oil, if oil leakage occurs, the oil will flow out from the lower end of the atomizer 22; or during the inhalation process, condensate will form in the atomization channel or the air outlet 311, and will also flow out from the lower end of the atomization channel. In view of the above phenomenon, the rotating mechanism 20 and the fixed seat 10 are in a mutually rotating connection relationship, which can easily bring the oil leakage or condensate to the electrical contact point of the atomizer 22. Therefore, the atomization channel of the atomizer 22, the air inlet channel 16 on the fixed seat 10 and the electrical contact point need to be isolated by a structure to prevent oil leakage or condensate from flowing to the electrical contact point.

[0040] A first electrical contact point 223 is provided at one end of the atomizer bomb 22 corresponding to the fixed seat 10. A height difference is provided between the first electrical contact point 223 and the air inlet 221 in the axial direction of the atomizer bomb 22. The first electrical contact point 223 and the air inlet 221 form a height difference at one end of the atomizer bomb 22, so that they are isolated from each other when connected to the fixed seat 10, thereby preventing the leaked oil or condensate flowing out of the air inlet 221 from flowing to the first electrical contact point 223. Specifically, a protrusion is provided at one end of the atomizer bomb 22 facing the fixed seat 10, and the air inlet 221 is provided on the protrusion, and when the rotating mechanism 20 is assembled with the fixed seat 10, the protrusion extends into the sliding groove 11.

[0041] The fixed seat 10 is provided with a second electrical contact point 13 corresponding to the first electrical contact point 223. The second electrical contact point 13 and the sliding groove 11 are provided with a height difference in the axial direction of the fixed seat 10. The height difference between the second electrical contact point 13 and the sliding groove 11 is equal to the height difference between the first electrical contact point 223 and the air inlet 221, so that the rotating mechanism 20 and the fixed seat 10 can match each other after being assembled. In one case, the air inlet 221 protrudes from one end of the rotating mechanism 20, and the protruding height of the air inlet 221 is equal to the depth of the sliding groove 11, so that after the rotating mechanism 20 and the fixed seat 10 are assembled, the first electrical contact point 223, the second electrical contact point 13 and the air inlet 221 can be isolated.

[0042] The first electrical contact point 223 and the second electrical contact point 13 both include positive and negative electrodes.

[0043] The air outlet end of the air inlet channel 16 of the fixed seat 10 is set at the bottom of the sliding groove 11. After the rotating mechanism 20 rotates a certain angle, the first electrical contact point 223 and the second electrical contact point 13 contact each other to form an electrical connection, and at this time the atomizer bomb 22 can enter the working state when inhaling, and the air inlet 221 is connected to the air outlet end of the air inlet channel 16, and the aerosol of the atomizer bomb 22 is taken away by the action of inhalation. Since the sliding groove 11 is designed in a concave form on the end surface of the fixed seat 10, and the air inlet 221 is designed in a convex form, after the rotating mechanism 20 and the fixed seat 10 are assembled with each other, the air inlet 221 and the first electrical contact point 223 and the second electrical contact point 13 form a height difference, so that oil leakage or condensate is not easy to flow to the electrical contact point, avoiding the image of short circuit caused by frequent rotation.

[0044] Since the rotating mechanism 20 is provided with at least two atomizing bombs 22, and each atomizing bomb 22 is provided with a first electrical contact point 223, and there is only one second electrical contact point 13 on the fixed seat 10, in order to enable the first electrical contact point 223 and the second electrical contact point 13 to contact each other after the rotating mechanism 20 rotates, the second electrical contact point 13 is located on the rotation trajectory of the first electrical contact point 223.

[0045] In the axial direction, the first electrical contact point 223 and the air inlet 221 have a certain height difference, and in the radial direction, a certain distance is set between the rotation trajectory of the first electrical contact point 223 and the rotation trajectory of the air inlet 221, so the electrical contact point can be well isolated from the air inlet 221. In this embodiment, the first electrical contact point 223 is located on the motion trajectory of the inner circle, and the air inlet 221 is located on the motion trajectory of the outer circle, so that after the rotating mechanism 20 is assembled with the fixed base 10, when the rotating mechanism 20 rotates, the motion trajectory formed by the air inlet 221 and the trajectory formed by the first electrical contact point 223 are staggered, so that the two are isolated from each other.

[0046] In fact, the rotational trajectories of the sliding groove 11 and the air inlet 221 overlap with each other. It can be understood that the air inlet 221 extends into the sliding groove 11 and moves along the sliding groove 11 .

[0047] The sliding groove 11 is provided at one end of the fixed seat 10 corresponding to the rotating mechanism 20, and is provided on the end surface of the fixed seat 10. In one embodiment, a concave structure is provided at one end of the rotating mechanism 20, and an upper component is fixed in the concave structure, and the gap between the concave cavity and the component forms the sliding groove 11, or the gap between the two components forms the sliding groove 11. In another embodiment, the sliding groove 11 is directly formed at the end of the rotating mechanism 20.

[0048] The fixing base 10 is provided with a battery 14 for supplying power to the device, and the positive and negative electrodes of the battery are connected to the second electrical contact point 13 .

[0049] The fixing seat 10 is provided with an installation cavity 101 for installing the battery. The installation cavity 101 is connected to the air inlet channel 16, and the air outlet end of the air inlet channel 16 is located in the sliding groove 11. The installation cavity 101 is provided with oil-absorbing cotton 15 near the air outlet end of the air inlet channel 16; or, the bottom of the sliding groove 11 is provided with oil-absorbing cotton 15 for absorbing oil leakage or condensation.

[0050] Compared with the prior art, the rotating mechanism 20 of the utility model and the fixed seat 10 can rotate relative to each other, and an air inlet 211 and a first electrical contact point 223 are provided at the end of the rotating mechanism 20 facing the fixed seat 10, and a sliding groove 11 and a second electrical contact point 13 are provided at the end of the fixed seat 10 facing the rotating mechanism 20. The air inlet 211 is located in the sliding groove 11 and moves, and the first electrical contact point 223 is electrically connected to the second electrical contact point 13; a height difference is formed between the contact points of the air inlet 211 and the first electrical contact point 223 and the second electrical contact point 13, so that the air inlet 211 is isolated from the electrical contact points to prevent oil leakage or condensate flowing out of the air inlet 211 from contaminating the electrical contact points.

[0051] The above examples are only used to further illustrate the technical content of the utility model, so that readers can understand it more easily, but it does not mean that the implementation methods of the utility model are limited to this. Any technical extension or re-creation made based on the utility model is protected by the utility model. The protection scope of the utility model shall be based on the claims.

Claims

1. An aerosol generating device with isolated electrical contacts, characterized in that: It includes a fixed seat, a rotating mechanism rotatably connected to the fixed seat, and a suction nozzle assembly rotatably connected to the fixed seat; the rotating mechanism is arranged between the fixed seat and the suction nozzle assembly; a sliding groove is arranged at one end of the fixed seat facing the rotating mechanism; the rotating mechanism is provided with an air inlet, and the air inlet is slidably connected in the sliding groove.

2. The aerosol generating device with isolated electrical contacts according to claim 1, characterized in that: A fixed shaft is arranged at one end of the fixing seat facing the rotating mechanism; the rotating mechanism is rotatably connected to the fixed shaft; and the suction nozzle assembly is connected to one end of the fixed shaft away from the fixing seat.

3. The aerosol generating device with isolated electrical contacts according to claim 2, characterized in that: The rotating mechanism comprises a mounting frame and at least two atomizing bombs detachably connected to the mounting frame; the mounting frame is provided with a rotating hole rotatably connected to a fixed shaft; the atomizing bombs are arranged on the mounting frame in a rotationally symmetrical manner with the rotating hole as the center.

4. The aerosol generating device with isolated electrical contacts according to claim 3, characterized in that: The air inlet is arranged at one end of the atomizing bomb facing the fixing seat; the air inlet protrudes from the end of the atomizing bomb.

5. The aerosol generating device with isolated electrical contacts according to claim 3, characterized in that: A first electrical contact point is arranged at one end of the atomizing bomb corresponding to the fixing seat; a height difference is arranged between the first electrical contact point and the air inlet in the axial direction of the rotating mechanism.

6. The aerosol generating device with isolated electrical contacts according to claim 5, characterized in that: The fixing seat is provided with a second electrical contact point electrically connected to the first electrical contact point; a height difference is provided between the second electrical contact point and the sliding groove in the axial direction of the fixing seat.

7. The aerosol generating device with isolated electrical contacts according to claim 6, characterized in that: The second electrical contact point is located on the rotation track of the first electrical contact point.

8. The aerosol generating device with isolated electrical contacts according to claim 6, characterized in that: A certain distance is set between the rotation track of the first electrical contact point and the rotation track of the air inlet.

9. The aerosol generating device with isolated electrical contacts according to claim 1, characterized in that: The fixing seat is provided with an air inlet passage; the air outlet end of the air inlet passage is arranged in the sliding groove.

10. The aerosol generating device with isolated electrical contacts according to claim 9, characterized in that: The fixing seat is provided with oil-absorbing cotton at a position close to the air inlet passage; or, the bottom of the sliding groove is provided with oil-absorbing cotton.

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