CN111174048A

CN111174048A - Image pickup apparatus

Info

Publication number: CN111174048A
Application number: CN201811341079.9A
Authority: CN
Inventors: 郭荣勋; 陈俊元; 邓建祥
Original assignee: Kunshan Aces Electronic Co ltd; Acer Inc
Current assignee: Kunshan Aces Electronic Co ltd; Acer Inc
Priority date: 2018-11-12
Filing date: 2018-11-12
Publication date: 2020-05-19

Abstract

The invention provides a camera device, which is characterized in that the surface of a base is provided with a containing part, the rear part of the containing part is provided with a shaft part, the shaft part is pivoted with a rotating shaft of a camera module behind a rotating seat and a camera arranged in a containing chamber in the rotating seat, a pushing part with a driving shaft downwardly and convexly extends at the position of the rotating seat adjacent to the rotating shaft, a locking mechanism arranged in a limit channel at the other side edge of the base adjacent to the shaft part comprises a sliding block, an elastic element positioned between the sliding block and the limit channel and a guide rod extending into a circulating rail channel on the surface of the sliding block for sliding, abutting and positioning, the side edge of the sliding block is provided with a pushing part for pivoting the driving shaft, when the rotating seat is pressed for the second time by taking the shaft part as a fan-shaped displacement, the pushing part can be rotationally abutted on the pushing part of the sliding block, so that the rotating seat is at a first position in a rising opening state or a second position, and the driving shaft crosses the rotating shaft and is divided into a third quadrant and a fourth quadrant by taking the central point coordinate as.

Description

Image pickup apparatus

Technical Field

The invention relates to a camera device, in particular to a rotary seat which is pivoted with a camera module on a shaft part of a base at the rear part of an accommodating part, a locking mechanism is arranged in a limit channel at the other side edge of the base adjacent to the shaft part, when the rotary seat is pressed for the second time and takes the shaft part as an axis to perform sector displacement, a pushing part of the rotary seat can be rotated and pushed against a pushing part of a sliding block, so that the rotary seat is in a first position of a rising opening state or a second position of a falling closing state, and a driving shaft crosses a third quadrant and a fourth quadrant which are divided by a rotating shaft as a central point coordinate.

Background

With the development of the current science and technology and the internet and the arrival of the digital video era, video communication is a well-developed image capturing technology, and the application range thereof is quite common and wide, for example, the video image can be rapidly transmitted to all over the world in a very short time through the internet, so that the video communication becomes an indispensable important application in daily life, most of the video cameras are built in a screen or a display on a desktop computer or a notebook computer, the video cameras are fixed inside a frame of a shell, so that the lens of the video camera can capture the image through a through hole on the shell to have the video communication function, and some external network cameras or monitoring equipment and the like are provided with a camera inside the shell, so that the video camera can be connected with the internet in real time on site, and can be applied to the relatives and friends conversation, the air teaching and the air Enterprise cross-regional video conferences, etc., and further improve the spatiotemporal distance between people.

Because the camera on the screen or the display is fixed in the frame of the shell, the camera cannot adjust the angle unless moving together with the shell, if a user rotates the notebook computer or moves the body to obtain the required shooting angle, the camera is inconvenient to use, and is very unfavorable to the user to watch the screen or operate, while the camera of the external network camera or the monitoring equipment cannot be folded when not in use although the required shooting angle can be adjusted through the rotating shaft, the whole is quite obtrusive, and the camera has the defect of large volume and space occupation, is exposed outside the shell, and is easily stained with fingerprints or dust due to the fact that the fingers of the user accidentally touch the camera.

In order to solve the above problems, some manufacturers have designed a camera device, which includes a rotating base pivotally connected to a camera module on a shaft of a base, and a camera head mounted inside the rotating base, wherein when a user presses the rotating base for a second time, a driving shaft of the rotating base is rotated to push a slider lower than a front side of a locking mechanism to generate a circular sliding support and positioning for the rotating base to perform an ascending opening or descending closing operation.

Disclosure of Invention

Therefore, in view of the above-mentioned problems and shortcomings, the present inventors have made various examinations and considerations to collect relevant data and have made various trials and modifications of research and development experiences in the industry.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a camera device which characterized in that, including base, camera module and locking mechanical system, wherein:

the surface of the base is provided with an accommodating part, a movable space is formed in the accommodating part, a shaft part is arranged at the rear part of the accommodating part, a limit channel is arranged at one side of the accommodating part adjacent to the shaft part of the base, and an opening communicated with the movable space is transversely arranged at the position of the limit channel adjacent to the accommodating part;

the camera module comprises a rotating seat accommodated in the accommodating part and a camera arranged in the accommodating chamber inside the rotating seat, a rotating shaft pivoted on the shaft part is arranged at the rear part of the rotating seat, and a pushing part with a driving shaft is downwards protruded and extended at the position of the rotating seat adjacent to the rotating shaft;

the locking mechanism is arranged in the limit channel and comprises a slide block, an elastic element and a guide rod, a circulating rail groove is arranged on the surface of the slide block, a pushing part which is positioned at an opening and is used for pivoting a driving shaft is arranged on the side edge of the slide block, the elastic element is positioned between the slide block and the limit channel and extends into the circulating rail groove through the guide rod, when the rotating seat is pressed for the second time and takes the shaft part as the axis to move in a sector shape, the pushing part can rotate and push against the pushing part of the slide block, so that the rotating seat is in a first position of a rising opening state or a second position of a falling closing state, and the driving shaft crosses over a third quadrant and a fourth quadrant into which the rotating shaft is taken as the central point coordinate of a rectangular.

The image pickup apparatus described above, wherein: the base is provided with a notch comprising a first side wall and a second side wall on the accommodating part, a movable space is formed in the first side wall behind the notch and the second side wall which is mutually vertical, and the first side wall is provided with a shaft part with a shaft groove for the rotating shaft of the rotating seat to be movably pivoted in the shaft groove.

The image pickup apparatus described above, wherein: the containing part of the base is provided with an abdicating groove at the position of the first side wall of the gap, which is adjacent to the inner side of the shaft groove, so that the driving shaft of the pushing part spans from the third quadrant to the fourth quadrant divided by the central point coordinate of the rotating shaft in the rotating seat sector displacement process, and the pushing part moves backwards to the abdicating groove.

The image pickup apparatus described above, wherein: the back of the limit channel of the base is provided with a positioning column for the elastic element to be sleeved on, a longitudinal through hole is arranged above the positioning column, the end part of one side of the guide rod extends into the circulating rail groove of the sliding block to slide, support and position, and the end part of the other side of the guide rod penetrates into the through hole.

The image pickup apparatus described above, wherein: the rotating seat of the camera module is provided with a swinging arm extending backwards at an opening below the accommodating chamber, a rotating shaft protruding outwards is arranged at the rear part of the swinging arm, a pushing part protrudes downwards at one side of the swinging arm adjacent to the rotating shaft, and a driving shaft protruding transversely is arranged on the outer surface of the pushing part.

The image pickup apparatus described above, wherein: the rotating seat of the camera module is provided with a through hole in the front of the accommodating chamber, and the camera in the accommodating chamber comprises a camera part and a connecting unit which are arranged on the circuit board and aligned with the through hole.

The image pickup apparatus described above, wherein: the pushing part of the locking mechanism on the side edge of the sliding block is provided with two abutting blocks positioned at the opening of the limiting channel, and a guide groove is formed between the two abutting blocks so that the pushing part of the rotating seat is clamped in the guide groove by the driving shaft to form movable pivot joint.

The image pickup apparatus described above, wherein: the bottom of the sliding block of the locking mechanism is provided with a limiting hole for positioning one side of the elastic element in the sliding block.

The image pickup apparatus described above, wherein: a cover plate is covered and positioned above the sliding block of the locking mechanism, and a pressing elastic sheet which is downwards abutted and held on the guide rod and is positioned is arranged on the surface of the cover plate.

The image pickup apparatus described above, wherein: the base is also provided with a shell outside, the shell comprises a shell and a bottom plate combined below the shell to form a closed space, and the surface of the shell is provided with a through hole for the seat to rotate to ascend and descend.

The main advantages of the invention are: when the rotating seat is pressed for the second time and the shaft is used as the axis for sector displacement, the pushing part will rotate and push against the pushing part of the sliding block, so that the rotating seat is at the first position of the rising opening state or the second position of the falling closing state, and the driving shaft crosses the rotating shaft and is divided into a third quadrant and a fourth quadrant by the coordinate of the central point.

Another advantage of the present invention is that when the user presses the rotating base of the camera module for the second time and the shaft portion is used as the axis to move in the receiving portion of the base in a sector shape, the pushing portion can rotate to push against the pushing portion of the sliding block to generate a circular sliding and positioning, so that the rotating base can perform an opening or closing operation of ascending or descending, and the driving shaft is connected to the third quadrant and the fourth quadrant which are divided by the crossing rotating shaft as the center point coordinate, and the driving shaft can be movably pivoted to the pushing portion at the side of the sliding block, so that the locking mechanism does not affect the path of the rotating base during the ascending and descending movement on the base, and the space occupied by the driving shaft rotating against the sliding block in front of the sliding block due to the locking mechanism arranged between the base and the camera module can be reduced, and the volume of the whole is reduced.

The camera device has the advantages that the shell is further arranged outside the base, so that the rotating seat of the camera module can be folded in the shell in the pressing mode, the camera can be completely retracted into the through hole of the shell and does not protrude, fingerprints or dust and the like on the camera caused by careless touch of fingers of a user when the camera device is not used are prevented from being attached, the space outside the shell is not occupied after the camera module is folded, the overall height is reduced, the camera device is thinner, and the design requirements of light, thin, short and small products are met.

Drawings

Fig. 1 is a perspective view of a preferred embodiment of the present invention.

Fig. 2 is an exploded perspective view of the preferred embodiment of the present invention.

Fig. 3 is a partial exploded perspective view of the present invention.

Fig. 4 is a partial exploded perspective view from another perspective of the present invention.

Fig. 5 is a side view of the preferred embodiment of the present invention before pressing.

FIG. 6 is a top view of the preferred embodiment of the present invention before pressing.

FIG. 7 is a side view of the preferred embodiment of the present invention as pressed.

FIG. 8 is a top view of the preferred embodiment of the present invention as pressed.

Figure 9 is a side view of the preferred embodiment of the present invention after release.

FIG. 10 is a top view of the preferred embodiment of the present invention after release.

Description of reference numerals: 1-a base; 11-a locus of containment; 110-activity space; a 111-notch; 1111-a first side wall; 1112-a second side wall; 112-yield slot; 12-a shaft portion; 121-axial slots; 13-a limit channel; 131-an opening; 132-a locating post; 133-punching; 2-a camera module; 21-a rotating seat; 211-a chamber; 2111-a through hole; 2112-arm swing; 212-a rotating shaft; 213-pushing part; 2131-a drive shaft; 214-pressing surface; 22-a camera; 221-a circuit board; 222-an image pickup unit; 223-a linking unit; 3-a locking mechanism; 31-a slide block; 311-circulation rail groove; 3111-a positioning end; 312-a pushing and moving part; 3121-a holding block; 3122-a guide channel; 313-a limiting hole; 32-a resilient element; 33-a guide rod; 34-a cover plate; 341-pressing the elastic sheet; 4-a shell; 41-a housing; 411-through hole; 42-bottom plate.

Detailed Description

To achieve the above objects and advantages, the present invention provides a novel and improved method for manufacturing a semiconductor device, which comprises a substrate, a first substrate, a second substrate, a third substrate, a fourth substrate.

Referring to fig. 1, fig. 2, fig. 3, and fig. 4, which are respectively a perspective external view, an exploded perspective view, a partially exploded perspective view, and a partially exploded perspective view from another perspective, it can be clearly seen from the drawings that the camera device of the present invention includes a base 1, a camera module 2, a locking mechanism 3, and a housing 4, wherein:

the surface of the base 1 has a containing portion 11, and the containing portion 11 is provided with a hollow notch 111, and the notch 111 includes a first side wall 1111 and a second side wall 1112 perpendicular to the first side wall 1111, and a movable space 110 is formed inside the first side wall 1111 at the rear of the notch 111 and the second side wall 1112 at the right side thereof, and the first side wall 1111 is provided with a shaft portion 12 having a shaft groove 121, and a relief groove 112 adjacent to the inner side of the shaft groove 121, and the base 1 is provided with a recessed limit channel 13 at the other side of the containing portion 11 adjacent to the shaft portion 12, and the limit channel 13 is transversely provided with an opening 131 communicating with the movable space 110 adjacent to the containing portion 11, and a positioning post 132 extending into the limit channel 13 is provided at the rear of the limit channel 13, and a longitudinal through hole 133 is provided above the positioning post 132.

The camera module 2 comprises a rotating seat 21 and a camera 22 accommodated in the accommodating portion 11, wherein an accommodating chamber 211 with a downward opening is formed in the rotating seat 21, a through hole 2111 is formed in the front of the accommodating chamber 211, an upward-turning swing arm 2112 extends backwards from the opening of the rotating seat 21 below the accommodating chamber 211, a rotating shaft 212 protruding outwards is arranged at the rear of the swing arm 2112, a pushing portion 213 protrudes downwards from the position of the swing arm 2112 adjacent to the right side of the rotating shaft 212, a driving shaft 2131 protruding transversely is arranged on the outer surface of the pushing portion 213, and a pressing surface 214 is formed at the top of the rotating seat 21; the camera 22 is installed in the accommodating chamber 211 of the rotating base 21, and includes a circuit board 221, a camera portion 222 disposed on the circuit board 221, and a connecting unit 223, wherein the camera portion 222 includes an image sensor (such as a CCD or a CMOS) and a lens holder aligned with the through hole 2111, and the connecting unit 223 can be a transmission line or a bus for electrically connecting to an external electronic device to output an image signal captured by the camera portion 222.

The locking mechanism 3 comprises a slide block 31, an elastic element 32 and a guide rod 33, wherein a circulating rail groove 311 with two positioning ends 3111 is arranged on the surface of the slide block 31, a pushing part 312 with two abutting blocks 3121 is arranged on the left side edge of the slide block 31, a guide groove 3122 is formed between the abutting blocks 3121, a limiting hole 313 for positioning one side of the elastic element 32 is arranged at the bottom of the slide block 31, and the end part bent downwards at one side of the guide rod 33 extends into the circulating rail groove 311 for sliding, abutting and positioning; furthermore, a cover plate 34 is positioned above the slider 31 for covering, and a pressing spring 341 is provided on the surface of the cover plate 34 and downwardly pressed against the guide rod 33 for positioning.

The housing 4 includes a casing 41 and a bottom plate 42 combined to a lower portion of the casing 41 to form a closed space, and a through hole 411 is formed on a surface of the casing 41.

When the present invention is assembled, the camera module 2 is accommodated in the accommodating portion 11 of the base 1, and is movably pivoted in the shaft groove 121 of the shaft portion 12 by the rotating shaft 212 of the rotating base 21, the sliding block 31 of the locking mechanism 3 is disposed in the limiting groove 13 of the base 1, and the abutting block 3121 of the pushing portion 312 is penetrated out and located at the opening 131, and the other side of the elastic element 32 extending out of the rear side of the sliding block 31 is sleeved on the positioning column 132 to be positioned between the sliding block 31 and the limiting groove 13, and the end portion of the guiding rod 33 bent downwards at the other side is penetrated into the through hole 133, so that the cover plate 34 can be combined on the surface of the base 1, the cover plate 34 is covered and positioned at the upper portion of the sliding block 31, the pushing portion 213 of the rotating base 21 is movably pivoted on the pushing portion 312 of the sliding block 31, and the driving shaft 2131 is clamped in the guiding groove 3122, thereby completing the overall assembly of the present invention.

In the present embodiment, the base 1, the camera module 2 and the locking mechanism 3 after the assembly are installed in the casing 41 of the housing 4, and the bottom plate 42 is combined to the lower portion of the casing 41 to form a closed space, so that the base 1 is stably positioned in the casing 4, and the rotating seat 21 of the camera module 2 is located at the through hole 411 of the casing 41, but in practical applications, the structural design of the casing 4 may be omitted, and the base 1, the camera module 2 and the locking mechanism 3 are applied to a casing of a screen, a display, a web camera or other electronic devices, for example, a notebook computer, and the simple modification and equivalent structural changes that apply the contents of the description and the drawings of the present invention are also included in the scope of the present invention, and it is shown that the present invention.

Please refer to fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, and fig. 10, which are a side view, a top view, a side view, a top view during pressing, and a side view and a top view after releasing, respectively, of the preferred embodiment of the present invention, when the present invention is used, the camera module 2 is pressed down on the pressing surface 214 of the rotary base 21, the rotating shaft 212 rotates around the shaft groove 121 of the shaft 12, and the rotating base 21 is moved in a fan shape downward toward the movable space 110 of the base 1 in the accommodating portion 11, and can be rotated and pushed against the guiding groove 3122 of the pushing portion 312 by the driving shaft 2131 of the pushing portion 213, so that the sliding block 31 of the locking mechanism 3 can be moved rearward and slidably along the limiting groove 13 of the base 1, and compress the elastic element 32 to elastically deform, and the guide rod 33 slides along the circular track 311 of the slider 31 to abut and position.

In the process of the fan-shaped displacement of the rotary seat 21, the driving shaft 2131 of the pushing portion 213 is divided into a third quadrant of a lower left corner and a fourth quadrant of a lower right corner by the original rotating shaft 212 as a center point coordinate of the rectangular coordinate system [ e.g., the X axis, the point coordinate of the Y axis is (0, 0) ], the pushing portion 213 is moved backward to the inner side of the relief groove 112 of the accommodating portion 11 without directly colliding with the base 1, and after the slider 31 drives the guide rod 33 to disengage from the limitation of the positioning end 3111 along the circulating track groove 311, the rotary seat 21 is released from the elastic element 32, and the slider 31 is driven to slide and displace forward along the limiting channel 13 of the base 1, and after the guide rod 33 displaces along the circulating track groove 311 to the other positioning end 3111 of the circulating track groove 311, the rotary seat 21 is enabled to lower the camera 22 from the first position of the original raised open state to the second position of the closed state, and the driving shaft 2131 of the pushing part 213 is kept in the fourth quadrant of the center point coordinate of the rotating shaft 212, so as to complete the first pressing and positioning operation of the present invention.

In this embodiment, the rotating seat 21 of the camera module 2 can utilize the above-mentioned pressing method to store the camera 22 in the housing 4, and the camera 22 can be completely retracted into the through hole 411 of the casing 41 without protruding, so as to prevent the camera 22 from being stained with fingerprints or dust due to the careless touch of the fingers of the user when the camera device is not in use, and the camera module 2 can not occupy the external volume and space of the housing 4 after being stored, so that the overall height is reduced and the camera module is thinner, thereby meeting the design requirements of light, thin, short and small products.

Conversely, when the user wants to open the camera module 2 from the through hole 411 on the surface of the housing 4, the user only needs to press the rotary base 21 downwards again to move downward in a sector shape toward the accommodating portion 11 with the shaft portion 12 of the base 1 as an axis, and release the rotary base 21 to release the elastic element 32, so that the pushing portion 213 thereof crosses from the fourth quadrant of the original center point coordinate of the rotating shaft 212 to the third quadrant, so as to rotate and push the locking mechanism 3 to move forward in the pushing portion 312 of the slider 31, and the guide rod 33 slides along the circular track slot 311 of the slider 31 to push and position, so that the rotary base 21 can lift the camera 22 from the second position of the original closed state to the first position of the open state, thereby completing the second pressing and positioning actions of the present invention, and the user can open or close the camera module 2 by pressing the rotary base 21 twice to generate a circular sliding and positioning manner in cooperation with the locking mechanism 3, the camera module 2 can be conveniently adjusted to a predetermined angle for shooting, and the camera module 2 can be quickly folded into the casing 4, and the whole or the volume and space during storage cannot be occupied, however, the manner of how the locking mechanism 3 cooperates with the camera module 2 to perform secondary pressing to generate circular sliding and positioning is the scope of the prior art, and the structure of the detail is not the creation point of the present case, and no further description is given.

Because the locking mechanism 3 is disposed in the position-limiting channel 13 of the base 1 at one side of the accommodating portion 11, and when the rotating base 21 of the camera module 2 is pressed for a second time and located in the accommodating portion 11 with the shaft portion 12 as the axis, the pushing portion 213 can rotate and push against the pushing portion 312 of the sliding block 31 to generate a circular sliding and positioning for the rotating base 21 to perform an ascending opening or descending closing operation, and the driving shaft 2131 is located in the third quadrant and the fourth quadrant divided by the center point coordinate of the rotating shaft 212, and can be pivoted to the pushing portion 312 at the side of the sliding block 31 by the driving shaft 2131, the locking mechanism 3 will not affect the path of the camera module 2 during the ascending and descending displacement at the front of the base 1, and the space occupied by the driving shaft 213 in front of the sliding block 31 due to the locking mechanism 3 disposed between the base 1 and the camera module 2 can be reduced, the whole volume is reduced and the cost is cheaper.

Therefore, the present invention mainly aims at that the shaft portion 12 of the base 1 at the rear of the accommodating portion 11 is a rotating shaft 212 pivotally connected to the camera module 2 on the rotating base 21, and the limiting groove 13 at the other side of the base 1 is internally provided with the locking mechanism 3, when the rotating base 21 presses the shaft portion 12 for the second time to perform sector displacement in the accommodating portion 11 with the shaft as the axis, the pushing portion 213 thereof will rotate and push against the pushing portion 312 of the sliding block 31, so that the rotating base 21 is located at the first position of the rising opening state or the second position of the falling closing state, and the driving shaft 2131 of the pushing portion 213 crosses the third quadrant and the fourth quadrant into which the rotating shaft 212 is divided as the center point coordinate, the driving shaft 2131 is pivotally connected to the pushing portion 312 at the side of the sliding block 31, so as to reduce the space occupied by the driving shaft 2131 in front of the sliding block 31 due to the locking mechanism 3 disposed between the base 1 and the, the whole volume is reduced and the cost is cheaper.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a camera device which characterized in that, including base, camera module and locking mechanical system, wherein:

2. The image pickup apparatus according to claim 1, wherein: the base is provided with a notch comprising a first side wall and a second side wall on the accommodating part, a movable space is formed in the first side wall behind the notch and the second side wall which is mutually vertical, and the first side wall is provided with a shaft part with a shaft groove for the rotating shaft of the rotating seat to be movably pivoted in the shaft groove.

3. The image pickup apparatus according to claim 2, wherein: the containing part of the base is provided with an abdicating groove at the position of the first side wall of the gap, which is adjacent to the inner side of the shaft groove, so that the driving shaft of the pushing part spans from the third quadrant to the fourth quadrant divided by the central point coordinate of the rotating shaft in the rotating seat sector displacement process, and the pushing part moves backwards to the abdicating groove.

4. The image pickup apparatus according to claim 1, wherein: the back of the limit channel of the base is provided with a positioning column for the elastic element to be sleeved on, a longitudinal through hole is arranged above the positioning column, the end part of one side of the guide rod extends into the circulating rail groove of the sliding block to slide, support and position, and the end part of the other side of the guide rod penetrates into the through hole.

5. The image pickup apparatus according to claim 1, wherein: the rotating seat of the camera module is provided with a swinging arm extending backwards at an opening below the accommodating chamber, a rotating shaft protruding outwards is arranged at the rear part of the swinging arm, a pushing part protrudes downwards at one side of the swinging arm adjacent to the rotating shaft, and a driving shaft protruding transversely is arranged on the outer surface of the pushing part.

6. The image pickup apparatus according to claim 1, wherein: the rotating seat of the camera module is provided with a through hole in the front of the accommodating chamber, and the camera in the accommodating chamber comprises a camera part and a connecting unit which are arranged on the circuit board and aligned with the through hole.

7. The image pickup apparatus according to claim 1, wherein: the pushing part of the locking mechanism on the side edge of the sliding block is provided with two abutting blocks positioned at the opening of the limiting channel, and a guide groove is formed between the two abutting blocks so that the pushing part of the rotating seat is clamped in the guide groove by the driving shaft to form movable pivot joint.

8. The image pickup apparatus according to claim 1, wherein: the bottom of the sliding block of the locking mechanism is provided with a limiting hole for positioning one side of the elastic element in the sliding block.

9. The image pickup apparatus according to claim 1, wherein: a cover plate is covered and positioned above the sliding block of the locking mechanism, and a pressing elastic sheet which is downwards abutted and held on the guide rod and is positioned is arranged on the surface of the cover plate.

10. The image pickup apparatus according to claim 1, wherein: the base is also provided with a shell outside, the shell comprises a shell and a bottom plate combined below the shell to form a closed space, and the surface of the shell is provided with a through hole for the seat to rotate to ascend and descend.