Skin medicine applying device

Abstract

The utility model relates to the technical field of medicine applying devices, in particular to a skin medicine applying device which comprises a medicine applying assembly, the medicine applying assembly is provided with a liquid outlet contact part which is located at the front end and used for making contact with the skin, and the medicine applying device further comprises a camera shooting assembly which comprises a camera. The camera is arranged in the direction facing the liquid outlet contact component to obtain image data of the liquid outlet area of the liquid outlet contact component, the medicine applying condition and the recovery condition of the skin can be judged through the camera, and the problem that an existing skin medicine applying device cannot be seen at some angles when facing the area, where the skin cannot be seen, of the skin is solved. The technical problems that in the prior art, medicine applying is not uniform generally, and the skin recovery condition cannot be observed are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to skin medicine applicator technical field, concretely is a skin medicine applicator. BACKGROUND

[0002] Before the skin medicine applicator appears, people usually adopt the following ways to carry out skin administration: Finger daub: this method is unhygienic, can cause cross infection easily, and difficult to control the uniformity of the medicine amount and daub. The bacteria on the fingers can contaminate the wound or pathological change site, aggravate the illness. Meanwhile, different people's fingers are different in size and strength, leading to the difference of daub effect.

[0003] Use cotton swab or cotton ball: although slightly hygienic than finger daub, still have some problems. Cotton swab or cotton ball can easily absorb medicine, cause waste, and they are small in daub area, need to be frequently replaced for large area skin pathological change, inconvenient operation. In addition, the texture of cotton swab or cotton ball is soft, difficult to daub medicine uniformly on the skin.

[0004] Therefore, the skin medicine applicator is invented along with the use demand. For example, the utility model patent with publication number CN 221181381 U and the name of a kind of electric liquid feeding device for scalp medicine applicator discloses a kind of electric liquid feeding device for scalp medicine applicator, although the equipment has progress, can be exported by electric mode to realize the medicine of head skin, solve the hygiene problem of skin medicine in the past.

[0005] But there are still some problems, usually consumers usually give themselves medicine, face the area that skin cannot see in some angles, usually there is uneven situation of medicine, and also cannot observe the recovery of skin.

[0006] Therefore, the above technical problem needs to be solved. UTILITY MODEL CONTENT

[0007] In order to overcome the deficiencies of the prior art, the utility model provides a skin medicine applicator, which can observe the medicine application situation of the skin medicine application area and the recovery of the skin when applying medicine to the skin.

[0008] In order to solve the above technical problems, the basic technical scheme of the utility model is as follows:

[0009] A skin medicine applicator, comprising a medicine application assembly having a liquid outlet contact part at the front end for contacting the skin, the skin medicine applicator further comprising a camera assembly, the camera assembly comprising a camera, the camera being arranged towards the direction of the liquid outlet contact part to obtain image data of the liquid outlet area of the liquid outlet contact part.

[0010] Further, the liquid outlet contact component is a plurality of liquid outlet columns; the plurality of liquid outlet columns enclose an assembly space; and the camera is arranged in the assembly space.

[0011] Further, the medicine applying assembly further comprises a contact auxiliary component; the contact auxiliary component is located below the liquid outlet contact component; and the camera is coaxially arranged with the contact auxiliary component.

[0012] Further, the contact auxiliary component is provided with a through hole inwardly recessed from the surface thereof; and the camera is embedded and assembled in the through hole.

[0013] Further, the skin medicine applying device further comprises a waterproof assembly; the waterproof assembly comprises a carrying seat and a sealing ring; the camera is assembled above the carrying seat; the sealing ring surrounds the outer periphery of the carrying seat, and the sealing ring is combined with the inner surface of the contact auxiliary component to enclose a sealing space for assembling the camera.

[0014] Further, the skin medicine applying device further comprises a lens protection cover; the lens protection cover covers the camera.

[0015] Further, the skin medicine applying device further comprises an electric control assembly; the camera is electrically connected with the electric control assembly.

[0016] Further, the electric control assembly has a communicator; the camera is electrically connected with the communicator to realize data transmission with external equipment.

[0017] Further, the skin medicine applying device further comprises a suction assembly; a connecting assembly is arranged around the outer periphery of the suction assembly; the medicine applying device further comprises an upper shell and a lower shell; one end of the connecting assembly is connected with the upper shell, and the other end of the connecting assembly is connected with the lower shell.

[0018] Further, the upper shell is internally provided with a guide column; a guide hole is arranged on the connecting assembly corresponding to the guide column; the guide column is directed towards the guide hole, and the guide hole is moved in position along the guide column under the action of an external force.

[0019] The skin medicine applying device has the following beneficial effects:

[0020] The utility model discloses a skin medicine applying device, including medicine applying subassembly, this medicine applying subassembly has the liquid outlet contact part for being used to contact with the skin in the front end, this medicine applying device still includes camera subassembly, the camera subassembly includes a camera, the camera is arranged to the direction of liquid outlet contact part to obtain the image data of the liquid outlet area of liquid outlet contact part, design like this, can when carrying out medicine applying to the skin, observe the medicine applying situation of skin, help to give the skin even medicine applying, and still can observe the recovery situation of skin to solve the problem that the current scalp medicine applying device cannot observe the medicine applying situation of skin. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure diagram of skin medicine applying device of the embodiment one of the utility model;

[0022] Figure 2 It is the position structure diagram of camera and medicine applying subassembly of the utility model;

[0023] Figure 3 It is the structure diagram of camera in different arrangement positions of the utility model;

[0024] Figure 4 It is the assembly structure diagram of lens protection cover embodiment one of the utility model;

[0025] Figure 5 It is the assembly structure diagram of lens protection cover embodiment two of the utility model

[0026] Figure 6 It is the assembly structure diagram of waterproof subassembly of the utility model;

[0027] Figure 7 It is the connection structure diagram of electric control subassembly of the utility model;

[0028] Figure 8 It is the structure diagram of suction subassembly of the utility model;

[0029] Figure 9 It is the structure diagram of connecting subassembly of the utility model;

[0030] Figure 10 It is the assembly structure diagram of connecting subassembly and upper shell of the utility model;

[0031] Figure 11 It is the electric control circuit diagram of the utility model;

[0032] BRIEF DESCRIPTION OF DRAWINGS:

[0033] 1 - medicine applying assembly, 11 - liquid outlet contact part, 12 - liquid outlet area, 13 - contact auxiliary part, 111 - liquid outlet column, 112 - assembly space, 131 - through hole, 2 - camera assembly, 21 - camera, 22 - flexible cord, 3 - waterproof assembly, 31 - mounting seat, 32 - sealing ring, 33 - sealing space, 4 - lens protection cover, 5 - electric control assembly, 51 - communicator, 52 - electric control board, 53 - memory, 6 - suction assembly, 61 - liquid storage cavity, 62 - flow guide pipe, 63 - liquid storage bottle, 7 - upper shell, 71 - assembly area, 72 - guide area, 73 - guide column, 711 - opening, 712 - sub-assembly area, 8 - lower shell, 9 - connecting assembly, 91 - first connecting piece, 92 - second connecting piece, 93 - coaxial hole, 911 - guide hole, 912 - first assembly hole, 921 - second assembly hole, 10 - protection cover. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings. Figure 1 to the accompanying drawings Figure 11 The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0035] It should be noted that the directions in the embodiments of the present application are based on the drawings shown in the drawings, and if a certain posture changes, the directional indications will also change accordingly.

[0036] With the improvement of people's living standards and the enhancement of health consciousness, the demand for skin care is also increasing. Skin is often poured with medicine for massage, and the traditional medicine applying method is to massage the skin by finger circling to promote skin absorption of medicine, or to smear the skin with a cotton swab. However, the traditional method usually has hygiene problems or operation inconvenience problems, and cannot meet the needs of consumers, so a more efficient, convenient and hygienic skin medicine applying tool is needed.

[0037] To this end, the present application provides a skin medicine applying device, which aims to observe the skin medicine applying situation and the skin recovery situation when applying medicine to the skin. Especially when applying medicine to places such as scalp or back where it is not easy to see, the user can clearly see the skin medicine applying situation of these areas.

[0038] As Figure 1As shown, the skin medicine applying device comprises a medicine applying assembly 1, which is used for applying medicine to the skin. The medicine applying assembly 1 has a liquid outlet contact part 11 at the front end for contacting the skin. When the liquid outlet contact part 11 contacts the skin, an outlet liquid area 12 is formed at the place contacting the skin. The medicine applying assembly 1 further comprises a contact auxiliary part 13. The contact auxiliary part 13 is located below the liquid outlet contact part 11. The liquid outlet contact part 11 and the contact auxiliary part 13 are detachably connected. In this embodiment, the contact auxiliary part 13 is provided with some assembly holes. The liquid outlet contact part is inserted into the assembly holes to realize fixed assembly.

[0039] Further, the medicine applying assembly 1 is further provided with a camera assembly 2, which comprises a camera 21 and a connecting wire 22. The camera assembly 2 is used for shooting the medicine applying condition of the skin to realize the observation of the skin by the user.

[0040] Further, the medicine applying device further has a protective cover 10, which wraps the medicine applying assembly 1 to avoid the medicine applying assembly 1 being contaminated by dust.

[0041] Further, the medicine applying assembly 1 is further connected with an upper shell 7 below. The upper shell 7 has an assembly area 71 and a guide area 72. The guide area 72 is located below the assembly area 71. The assembly area 71 has an opening 711. The contact auxiliary part 13 covers the opening 711 to realize the closure of the assembly area 71. The lower end of the guide area 72 is inserted with a connecting assembly 9.

[0042] The connecting assembly 9 has a first connecting piece 91 and a second connecting piece 92. The first connecting piece 91 and the second connecting piece 92 are connected by screw holes. The connecting assembly 9 further has a coaxial hole 93, which comprises a first assembly hole 912 arranged in the first connecting piece 91 and a second assembly hole 921 arranged in the second connecting piece 92. The two assembly holes are coaxially arranged.

[0043] The lower end of the second connecting piece 92 is inserted with a lower shell 8, which is a hollow cylindrical structure with both ends open.

[0044] The medicine applying device further has a suction assembly 6, which is used for sucking the medicine liquid to the medicine applying assembly 1.

[0045] The suction assembly 6 is sequentially arranged from top to bottom along the longitudinal direction of the medicine applicator, and sequentially comprises a liquid storage cavity 61, a flow guide pipe 62 connected below the liquid storage cavity 61, and a liquid storage bottle 63 connected below the flow guide pipe 62. The flow guide pipe 62 and the liquid storage bottle 63 are connected by an elastic member, which comprises a spring.

[0046] Specifically, the liquid storage cavity 61 is located in the upper shell 7, the liquid storage bottle 63 is located in the lower shell 8, and the flow guide pipe 62 is inserted into the bottle opening of the liquid storage bottle 63 below the second connecting piece 92 through the coaxial hole 93.

[0047] Further, the top of the upper shell 7 is also provided with an electric control assembly 5, which is electrically connected with the camera assembly 2 and controls and receives the shooting data of the camera 21. Thus, the user can check the medicine application situation of the skin.

[0048] In some other use scenarios, the electric control board 52 is also connected with a memory 53, which is used to store the image data information shot by the camera 21, so as to facilitate the user to check the image data information when needed.

[0049] In addition, the electric control board 52 of the medicine applicator is also connected with a motor, which is used to generate vibration when the user applies medicine to the skin, so as to promote the absorption of the medicine by the skin.

[0050] In order to enhance the absorption of the medicine by the skin, some electrotherapy columns can be arranged on the contact auxiliary part 13 described above in some other embodiments, which are used to perform electrotherapy massage on the medicine application area of the skin, so as to further promote the absorption of the medicine by the skin. It should be understood that the electrotherapy columns are electrically connected with the electric control board 52 and are controlled by the electric control board 52.

[0051] In addition, the electric control board 52 of the medicine applicator also has a charging interface and a switch button, wherein the charging interface is electrically connected with the battery, and the charging interface and the battery are both electrically connected with the electric control board 52. When the medicine applicator needs to be charged, the user can charge the medicine applicator through the charging interface.

[0052] The switch button is also electrically connected with the electric control board 52, which is used to turn on or off the camera 21, the motor and the like of the medicine applicator.

[0053] Specifically, as shown in Figure 2 and Figure 3 The camera 21 is arranged towards the direction of the liquid outlet contact part 11 to obtain the image data of the liquid outlet area 12 of the liquid outlet contact part 11.

[0054] It should be understood that, in use, the liquid outlet contact component 11 is in contact with the skin, and as the user operates the skin applicator to move over the skin, the liquid outlet contact component 11 acts on the skin to form an operating area, i.e. the liquid outlet area 12. Since the camera 21 is arranged to have a shooting angle towards the direction of the liquid outlet contact component 11, this allows the camera 21 to capture different skin conditions as the liquid outlet contact component 11 moves, and thus obtain image data of the liquid outlet area 12 of the liquid outlet contact component 11. This allows the user to view the skin application condition and the health condition of the skin.

[0055] Further, the liquid outlet contact component 11 is a plurality of liquid outlet columns 111; when the plurality of liquid outlet columns 111 act on the scalp, for the area of the scalp having hair, the plurality of liquid outlet columns 111 can comb the hair open to facilitate the liquid in the plurality of liquid outlet columns 111 to be applied to the scalp. Moreover, the plurality of liquid outlet columns 111 enclose an assembly space 112; the camera 21 is arranged in the assembly space 112.

[0056] As shown in Figure 3 , it should be understood that, as the liquid outlet columns 111 move over the skin, the cross-sectional area of the assembly space 112 is the contact area of the liquid outlet columns 111 with the skin, and by placing the camera 21 in the assembly space 112, the camera 21 can effectively capture the skin condition of the contact area, i.e. the shooting angle area A1 shown in Figure 2 , so as to allow the user to observe the skin application area.

[0057] In the present embodiment, the camera 21 is coaxially arranged with the contact auxiliary component 13. Specifically, as shown in Figure 2 , the camera 21 is located on the surface of the contact auxiliary component 13, so that the camera 21 can obtain image data of the skin in contact.

[0058] In another preferred embodiment, as shown in Figure 3 , the contact auxiliary component 13 is recessed inward from its surface to form a through hole 131; the camera 21 is embedded and assembled in the through hole 131.

[0059] It can be understood that, due to the limited assembly space of the medicine applicator, it is desired to enable the camera 21 to capture a larger area of skin condition in the limited space. Preferably, the inventor selects to arrange the camera 21 in the through hole 131, thereby expanding the shooting angle of the camera 21. Specifically, when the camera 21 is close to the aperture of the through hole 21 to shoot, due to the short distance, the angle of view is relatively narrow, and only a small part of the aperture and the surrounding area can be shot. When shooting at a distance far from the aperture, the angle of view is wider, and the aperture and the surrounding environment of a larger range can be included in the picture.

[0060] Therefore, the camera 21 is arranged in the through hole 131 to obtain a larger shooting angle A2 to facilitate the user to observe the skin medicine application condition of a larger area. On the other hand, the camera 21 is arranged in the through hole 131, which can effectively avoid that the medicine applicator is moved on the surface, and the camera 21 is easily scratched off from the medicine applicator due to the friction between the camera 21 and the skin when the camera 21 directly contacts the skin, thereby causing the camera 21 to be unable to be normally used.

[0061] In another embodiment, as shown in Figure 4 , in order to enable the camera 21 to obtain a larger shooting area, that is, to obtain a larger shooting angle A3. The camera 21 can also be arranged below the contact auxiliary part 13, that is, the camera 21 is arranged below the through hole 131, thereby expanding the shooting angle of the camera 21, obtaining skin data information of a larger area, and further improving the user experience. In addition, this way can better protect the camera 21, avoid the direct contact between the camera 21 and the skin, and scratch and wear the mirror surface of the camera 21 in the process of use, thereby affecting the visual clarity of the camera 21.

[0062] In addition, as shown in Figure 4 , the medicine applicator also has a lens protection cover 4 covering the camera 21. It should be understood that the lens protection cover 4 covers the surface of the camera 21, which can prevent the camera 21 from being scratched and protect the camera 21 from being invaded by liquid medicine, thereby prolonging the service life of the camera 21.

[0063] Specifically, for example, in the embodiment described above Figure 2 , the lens protection cover 4 covers the camera 21 inside as shown in Figure 4 . Of course, the lens protection cover 4 can also have other shapes according to actual needs, as long as it can cover the camera 21.

[0064] Further, as shown in Figure 5 The lens protection cover 4 is a plate-shaped structure. For example, in the above Figure 4 and Figure 5 embodiments, the lens protection cover 4 in plate-shaped form is covered on the aperture of the through hole 131 to seal the through hole 131, and after the lens protection cover 4 is covered on the through hole 131, the surface of the lens protection cover 4 is smoothly connected with the aperture of the through hole 131. It should be understood that in this way, on the one hand, it can effectively prevent external liquid medicine from entering the through hole 131 and wetting the camera 21; on the other hand, it can effectively prevent the camera 21 from falling off the applicator.

[0065] Further, as shown in Figure 6 The applicator further comprises a waterproof assembly 3; the waterproof assembly 3 is located below the contact auxiliary component 13 and in the assembly area 71 of the upper shell 7. Specifically, the assembly area 71 has a sub-assembly area 712 for assembling the liquid storage cavity 61, and it should be understood that the liquid storage cavity 61 is sleeved in the sub-assembly area.

[0066] The waterproof assembly 3 comprises a mounting seat 31 and a sealing ring 32; the mounting seat 31 is assembled above the camera 21; the sealing ring 32 surrounds the outer periphery of the mounting seat 31, and the sealing ring 32 is combined with the inner surface of the contact auxiliary component 13 to form a sealing space 33 for assembling the camera 21.

[0067] In detail, the mounting seat 31 is arranged at the top end of the liquid storage cavity 61, and the sealing ring 32 is arranged along the end of the liquid storage cavity 61. When the contact auxiliary component 13 is covered on the upper shell 7, the sealing ring 32 fills the area between the top end of the liquid storage cavity 61 and the contact auxiliary component 13 to isolate the liquid storage cavity 61 and prevent the liquid in the liquid storage cavity 61 from leaking and corroding other electronic components. Moreover, the sealing ring 32 is combined with the inner surface of the contact auxiliary component 13 to form a sealing space 33 for assembling the camera 21, and the sealing space 33 separates the camera 21 from the liquid in the liquid storage cavity 61, thereby preventing the camera 21 from being wetted by the liquid and affecting use.

[0068] Further, as shown in Figure 7 The applicator further comprises an electric control assembly 5; the camera 21 is electrically connected with the electric control assembly 5. The electric control assembly 5 comprises a communicator 51 and an electric control board 52; the camera 21 is electrically connected with the communicator 51 to realize data transmission with external devices.

[0069] It is to be noted that the electric control assembly 5 is arranged in the area outside the sub-assembly area 712 of the assembly area 71. After the assembly area 71 is assembled with the contact auxiliary component 13, the area outside the liquid storage cavity 61 forms a waterproof dry area due to the fact that the liquid storage cavity 61 is isolated by the sealing ring 32, so as to avoid the electric control assembly 5 in the sub-assembly area 712 from being immersed in water.

[0070] Further, as shown in Figure 8 and Figure 9 the medicine applicator further comprises a suction assembly 6; a connecting assembly 9 is arranged around the outer periphery of the suction assembly 6; the medicine applicator further comprises an upper shell 7 and a lower shell 8; one end of the connecting assembly 9 is connected to the upper shell 7, and the other end of the connecting assembly 9 is connected to the lower shell 8.

[0071] In use, the user presses the upper shell 7, so that the liquid storage bottle 63 arranged inside the lower shell 8 generates a longitudinal upward extrusion movement, and the elastic member is extruded, so as to realize the extrusion of the liquid in the liquid storage bottle 63 into the flow guide pipe 62, and then into the liquid storage cavity 61. When the outer shell 7 is removed from the external force, the elastic member needs to restore its original state to push the liquid storage bottle 63 back to its original position due to its elastic property, thereby realizing one suction work of the suction assembly 6.

[0072] During the suction process of the suction assembly 6, in order to prevent the flow guide pipe 62 from tilting during the suction process, the connecting assembly 7 is arranged at the connection between the flow guide pipe 62 and the liquid storage bottle 63. Specifically, the connecting assembly 9 has a first connecting piece 91 and a second connecting piece 92, a first assembly hole on the first connecting piece 91 is assembled with the flow guide pipe 62, and the outer periphery of the first connecting piece 91 is inserted and assembled with the upper shell 7; the neck portion of the liquid storage bottle 63 is sleeved in the second assembly hole 921 of the second connecting piece 92, the top of the second connecting piece 92 is assembled and connected with the first connecting piece 91 by means of screws, and the outer periphery of the second connecting piece 92 is inserted and assembled with the lower shell 8.

[0073] In this way, on the one hand, during the extrusion process of the suction assembly 6, the connecting assembly 9 can help to fix the suction assembly 6, so that the suction assembly 6 is extruded along a predetermined direction; on the other hand, it is to be noted that the liquid storage bottle 63 and the second connecting piece 92 are detachably sleeved, that is, in this embodiment, the liquid storage bottle 63 can be detached from the medicine applicator according to actual needs for replacement.

[0074] Further, as shown in Figure 10As shown, the inside of the upper shell 7 is arranged with a guide column 73; the connecting assembly 9 assembled with the guide column 73 is arranged with a guide hole 911; the guide column 73 is towards the guide hole 911, and the guide hole 911 is moved along the guide column 73 under the action of external force.

[0075] It should be understood that, in use, when the upper shell 7 is subjected to external force, the upper shell 7 moves downward along the force direction, at the same time, the liquid storage bottle 63 moves upward along the direction opposite to the force direction, thereby pushing the second connecting piece 92 to move along the direction opposite to the force direction. When the second connecting piece 92 moves, the first connecting piece 91 is pushed to move towards the guide column 73, when the first connecting piece 91 contacts the guide column 73, the guide column 73 enters the guide hole 911, so as to smoothly realize the liquid suction of the medicine applicator.

[0076] In summary, the skin medicine applicator can help the user to intuitively observe the skin medicine application and the skin recovery when the medicine applicator is used on the skin.

[0077] Specifically, as shown in the electric control circuit diagram, Figure 11 As shown in the electric control circuit diagram,

[0078] According to the disclosure and teaching of the above description, the person skilled in the art of the utility model can also change and modify the above embodiments. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the utility model should also fall within the protection scope of the claims of the utility model. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the utility model.

Claims

1. A skin medicine applicator, comprising a medicine applicator assembly, wherein the medicine applicator assembly has a liquid contact component located at a front end for contacting the skin, characterized in that: The skin applicator further includes a camera assembly, wherein the camera assembly includes a camera, and the camera is arranged toward the liquid outlet contact component to acquire image data of the liquid outlet area of ​​the liquid outlet contact component; The liquid outlet contact parts are a plurality of liquid outlet columns; A plurality of the liquid outlet columns are combined to form an assembly space; The camera is arranged in the assembly space.

2. The skin applicator according to claim 1, characterized in that: The medicine applying assembly further includes a contact auxiliary component; The contact auxiliary component is located below the liquid outlet contact component; The camera is coaxially arranged with the contact assisting component.

3. The skin applicator according to claim 2, characterized in that: The contact auxiliary component is provided with a through hole recessed inwardly from the surface thereof; The camera is embedded in the through hole.

4. The skin applicator according to claim 2, characterized in that: The skin applicator also includes a waterproof component; The waterproof assembly includes a mounting seat and a sealing ring; The camera is mounted above the mounting seat; The sealing ring surrounds the outer periphery of the mounting seat, and the sealing ring is combined with the inner surface of the contact auxiliary component to enclose a sealed space for assembling the camera.

5. The skin applicator according to claim 1, characterized in that: The skin applicator also includes a lens protection cover; The lens protection cover covers the camera.

6. The skin applicator according to claim 1, characterized in that: The skin applicator also includes an electronic control component; The camera is electrically connected to the electronic control component.

7. The skin applicator according to claim 6, characterized in that: The electronic control component has a communicator; The camera is electrically connected to the communicator to realize data transmission with external equipment.

8. The skin applicator according to claim 1, characterized in that: The skin applicator also includes a suction component; A connecting component is arranged around the periphery of the suction component; The medicine applicator also includes an upper shell and a lower shell; One end of the connecting component is connected to the upper shell, and the other end of the connecting component is connected to the lower shell.

9. The skin applicator according to claim 8, characterized in that: A guide column is arranged inside the upper shell; The connecting assembly assembled corresponding to the guide column is provided with a guide hole; The guide post faces the guide hole, and the guide hole moves along the guide post under the action of external force.

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