CN211560479U

CN211560479U - Connecting device and tooth whitening instrument using same

Info

Publication number: CN211560479U
Application number: CN201921415897.9U
Authority: CN
Inventors: 徐勇刚
Original assignee: Nanchang Youshiman Biotechnology Co ltd
Current assignee: Nanchang Youshiman Biotechnology Co ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-09-25
Anticipated expiration: 2029-08-28

Abstract

A connecting device and a tooth whitening instrument using the connecting device, the connecting device comprises a shell and a rotating device fixed in the shell, the rotating device comprises a first locking ring, a second locking ring arranged in the first locking ring and a ball head arranged in the second locking ring, and a first rotating shaft which passes through the interior of the bulb and is fixedly connected with the bulb, the lower end of the first rotating shaft is used for connecting the lamp holder, the interior of the first rotating shaft is hollow, a connecting circuit for arranging the lamp holder, wherein the bulb is provided with a limiting piece for limiting the rotation angle of the bulb in the horizontal direction to exceed 360 degrees, the shell is circumferentially provided with a first limiting groove along the width direction of the shell, the first rotating shaft passes through the first limiting groove and extends to the outer side of the shell, the first limiting groove is used for limiting the angle of the second locking ring rotating in the first locking ring along the vertical direction to be less than 360 degrees.

Description

Connecting device and tooth whitening instrument using same

Technical Field

The utility model relates to a health care equipment technical field especially relates to a connecting device and use this connecting device's tooth appearance of whitening.

Background

At present, with the improvement of living standard, people pay attention to their care, especially teeth, and more people pay much attention to their teeth, and it is desired that whitening of teeth gives a good impression to others in work and life.

The existing tooth whitening apparatuses generally adopt a tooth whitening apparatus, such as a tooth whitening apparatus adopting a cold light whitening technology. The existing tooth whitening apparatus generally includes a lamp head and a holder for supporting the lamp head. The general power supply device is arranged on the support frame, and a circuit is arranged to the lamp holder along the support frame to supply power to the lamp holder. Because the light source of the tooth whitening instrument needs to be flexibly rotated, the circuit of the whitening instrument in the prior art is arranged outside the bracket, the lamp cap rotates without limit, and when the rotation angle of the lamp cap exceeds 360 degrees, the circuit is easy to be wound and damaged.

In the structure of the tooth whitening instrument in the prior art, the circuit arrangement of the tooth whitening instrument not only affects the appearance, but also often causes wiring winding when the lamp cap rotates, so that the wiring is easy to damage.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a connection device and a tooth whitening apparatus using the same, which solve the problem of the prior art that a wire is twisted when a lamp head of the tooth whitening apparatus is rotated.

A connecting device comprises a shell and a rotating device fixed in the shell, wherein the rotating device comprises a first locking ring, a second locking ring arranged in the first locking ring, a ball head arranged in the second locking ring, and a first rotating shaft which penetrates through the interior of the ball head and is fixedly connected with the ball head, the lower end of the first rotating shaft is fixedly connected with a lamp holder, the interior of the first rotating shaft is hollow and is used for arranging a connecting circuit of the lamp holder, a limiting part is arranged on the ball head and is used for limiting the rotating angle of the ball head in the horizontal direction to be not more than 360 degrees, so that the angle of the lamp holder rotating along with the first rotating shaft in the horizontal direction is not more than 360 degrees, a first limiting groove is circumferentially arranged on the shell along the width direction of the shell, and the first rotating shaft penetrates through the first limiting groove and extends to the outer side of the shell, the first limiting groove is used for limiting the second locking ring to rotate in the first locking ring in the vertical direction by less than 360 degrees, so that the angle of the lamp head rotating along with the first rotating shaft in the vertical direction is less than 360 degrees.

Further, in the above-mentioned connecting device, a central angle of a sector area formed by the two end points of the first limiting groove and the ball head is less than 360 °.

Further, in the above connecting device, the limiting member includes a limiting block disposed on the ball head, a second limiting groove adapted to the limiting block is disposed on an inner wall of the second locking ring, the second limiting groove is arc-shaped, and the central angle is smaller than 360 °.

Furthermore, the connecting device further comprises two locking devices which are fixedly arranged on two sides of the first locking device respectively, the second locking ring comprises two second locking portions which are symmetrically arranged on two sides of the ball head, the first locking ring comprises two first locking portions which are symmetrically arranged on two sides of the second locking ring, the two first locking portions are abutted against the two second locking portions respectively, and the two locking devices are used for adjusting the distance between the two first locking portions.

Further, in the above connection device, the locking device includes a rotating member and a spring having one end connected to the rotating member, the other end of the spring is connected to the first locking portion on the same side, and the rotating member is rotated to compress the spring, so that the two first locking portions are close to each other.

Furthermore, the connecting device is characterized in that the rotating part comprises a handle shell arranged at the end of the shell, a screw fixedly connected with the handle shell and a nut connected with the screw in a matched mode, the nut abuts against the first locking parts, and each first locking part is provided with a fixing hole matched with the screw.

Further, in the above connecting device, a width of the first limiting groove is adapted to the first rotating shaft.

The utility model also discloses a tooth appearance of whitening, including support frame and lamp holder and the arbitrary one of the aforesaid connecting device, connecting device's casing is fixed in on the support frame, the lamp holder with connecting device's first pivot fixed connection, the inside cavity of support frame to be used for arranging the circuit, the circuit passes first pivot inside with the lamp holder is connected.

Further, above-mentioned tooth whitening instrument, wherein, the support frame includes the base, be fixed in branch on the base and with the swinging boom that branch is connected, the swinging boom with branch rotates and is connected.

Further, above-mentioned tooth appearance of whitening, wherein, branch with the swinging boom passes through the armed lever connecting piece to be connected, the armed lever connecting piece include with the fixed block that branch is connected and with the fixing base that the swinging boom is connected, the swinging boom transversely passes the first through-hole of seting up on the fixing base, the fixed block inserts the second through-hole that the fixing base lower extreme was seted up, and with the fixing base passes through the second pivot and realizes rotating the connection, the swinging boom lower extreme seted up with the third through-hole that the second through-hole is relative.

Further, above-mentioned tooth whitening apparatus, wherein, the upper portion of fixed block is the arc, set up in the fixing base with the third spacing groove of fixed block adaptation, the third spacing groove is used for restricting the swinging boom not to exceed 360 round this second pivot pivoted angle.

Further, according to the tooth whitening apparatus, a transversely arranged fixing shaft is fixedly arranged at the lower end of the first rotating shaft, a first pressing block and a second pressing block are respectively fixed at the upper end and the lower end of the fixing shaft, the second pressing block is fixedly connected with the lamp holder, a groove is formed in one side of the first pressing block, and the first rotating shaft is clamped in the groove.

Further, in the tooth whitening apparatus, the housing of the connecting device is fixedly connected with one end of the rotating arm, the other end of the rotating arm is fixedly provided with a balancing weight, and the balancing weight is used for balancing the weight of the lamp holder and the weight of the connecting device.

In the embodiment of the utility model, the connecting circuit of the lamp holder is arranged in the first rotating shaft, the first rotating shaft is connected with the ball head, the ball head is arranged in the second locking ring, and the limiting part arranged on the ball head limits the rotating angle in the second locking ring of the ball head to be less than 360 degrees along the horizontal direction; the second locking ring is arranged in the first locking ring and can rotate in the first locking ring, the second locking ring can be limited to rotate up and down in the first locking ring through a first limiting groove formed in the shell, and the rotating angle is smaller than 360 degrees, so that the rotating angle of the first rotating shaft in the vertical direction is smaller than 360 degrees. The linking device in the embodiment can realize the flexible rotation of the lamp cap in the front-back direction and the left-right direction, and can prevent the arranged circuit from rotating by more than 360 degrees, thereby avoiding the winding of the circuit when the lamp cap rotates.

Drawings

Fig. 1 is a schematic structural view of a connecting device according to a first embodiment of the present invention;

fig. 2 is an exploded view of a connection device according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of a tooth whitening apparatus according to a second embodiment of the present invention;

fig. 4 is a schematic structural view of an arm connecting member according to a second embodiment of the present invention;

fig. 5 is an exploded schematic view of a lamp cap portion according to a second embodiment of the present invention.

Description of the main elements

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The embodiment of the invention is given in the attached drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, this embodiment is provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1, which is a schematic structural diagram of a connecting device according to a first embodiment of the present invention, wherein the housing in fig. 1 is divided into two parts to clarify the internal structure of the housing. The connecting device 10 is arranged on the tooth whitening instrument and used for connecting a lamp holder, so that the lamp holder can rotate in the horizontal direction and the vertical direction. The connecting device 10 comprises a housing 11 and a rotating device fixed in the housing 11, wherein the housing 11 can be an ellipsoid and comprises two parts which can be covered up and down.

As shown in fig. 1 and 2, the rotating device includes a first locking ring 12, a second locking ring 13 disposed in the first locking ring 12, a ball head 14 disposed in the second locking ring 13, and a first rotating shaft 15 passing through the interior of the ball head 14 and fixedly connected to the ball head 14. The ball head 14 is spherical, and both ends thereof can be processed into flat front faces so as to be conveniently installed in the housing 11. The second locking ring 13 has a shape substantially the same as that of the ball head 14, is spherical, has a hollow interior to receive the ball head 14 such that the ball head 14 can rotate in the second locking ring 13, and has a recess in the first locking ring 12 adapted to the second locking ring 13 to receive the second locking ring 13 and such that the second locking ring 13 can rotate in the first locking ring 12.

The ball head 14 is provided with a limiting member for limiting the rotation angle of the ball head 14 in the horizontal direction to be not more than 360 degrees, and since the ball 14 is fixedly connected with the first rotating shaft 15 which is used for connecting the lamp head, when the first rotating shaft 15 rotates left and right along with the lamp head, the rotation angle of the ball head 14 in the horizontal direction is driven to be not more than 360 degrees. Specifically, the limiting member includes a limiting block (not shown) disposed on the ball head 15, a second limiting groove 16 adapted to the limiting block is disposed on an inner wall of the second locking ring 13, the second limiting groove 16 is arc-shaped, and the central angle is smaller than 360 °, in this embodiment, the second limiting groove 16 may be semicircular, so that the ball head can rotate 180 ° in the second locking ring along the horizontal direction.

As a practical way, the limiting block may be a bolt fixed on the ball head and protruding from the surface of the ball head, and the bolt also plays a role of fixing the ball head and the first rotating shaft.

The housing 11 is circumferentially provided with a first limiting groove 17 along a width direction thereof, and the first rotating shaft 15 passes through the first limiting groove 17 and extends to an outer side of the housing 11. The two ends of the first limiting groove 17 are not connected, and the central angle of the sector area formed by the two ends of the first limiting groove 17 and the ball head is less than 360 degrees, so that when the first rotating shaft 15 rotates along with the lamp head, the second locking ring 13 is driven to rotate in the first locking ring 12 in the vertical direction by an angle less than 360 degrees. For example, in the embodiment, the first limiting groove 17 extends from one side edge of the lower half of the housing 11 to the middle of the lower half of the housing 11, and the first rotating shaft 15 can rotate up and down 90 ° along the first limiting groove.

Further, the width of the first limiting groove 17 is matched with the first rotating shaft 15 to limit the first rotating shaft 15 from moving left and right.

The lower end of the first rotating shaft 15 is used for connecting the lamp cap, and the first rotating shaft is hollow inside for arranging a connecting line of the lamp cap. The power connecting wire enters the first rotating shaft from the end part of the shell and is arranged along the length direction of the first rotating shaft. The lower end of the first rotating shaft 15 is used for connecting a lamp cap 30, and the circuit is connected with the lamp cap after extending out of the first rotating shaft.

Through the design of the limiting piece, when the first rotating shaft is rotated left and right, the ball head can be horizontally rotated for 180 degrees in the second locking ring; by the design of the first limiting groove 17, when the first rotating shaft 15 rotates up and down along the first limiting groove 17, the ball head 14 and the second locking ring 13 can rotate together by 90 ° in the vertical direction in the first locking ring 12. Thereby controlling the angle of rotation of the wire in the first rotary shaft 15 and preventing the wire from being wound in both the front-rear and left-right directions.

It should be understood that the central angles of the first and second

limiting grooves

17 and 16 are smaller than 360 °, and the specific values thereof can be set according to actual requirements, which is not limited in the embodiments of the present invention.

The connecting device further comprises two locking devices which are fixedly arranged on two sides of the first locking ring 12 respectively. The second locking ring 13 includes two second locking portions 131 symmetrically disposed at both sides of the ball head 14. The first locking ring 12 includes two first locking parts 121 symmetrically disposed at both sides of the second locking ring 13, the two first locking parts 121 are respectively formed with a groove adapted to the second locking part 131, and the two first locking parts 121 respectively lean against the outer sides of the two second locking parts 131. The two locking devices are used to adjust the interval between the two first locking portions 121.

Specifically, the locking device includes a rotating member and a spring 21 having one end connected to the rotating member, the other end of the spring 21 is connected to the first locking portion 121 on the same side, and the two first locking portions 121 are moved closer to each other by rotating the rotating member.

In this embodiment, the rotating member includes a handle housing 22 disposed at an end of the housing 11, a screw 23 fixedly connected to the handle housing 22, and a nut 24 cooperatively connected to the screw 23, the nut 24 abuts against the first locking portions 121 on the same side, and each first locking portion 121 is provided with a fixing hole adapted to the screw 23. When a user tightens the screw 23 by rotating the handle housings 22 on both sides of the housing 11, the nuts 24 on both sides approach each other, the spring 21 compresses and presses the first locking portions 121, and the two first locking portions 121 approach each other, thereby fixing the ball 14 and preventing the ball 14 from loosening.

During the use, rotatable screw 23 is to suitable position, and this spring 21 is out of compression state, makes two first locking portions 121 atress moderate, and two second locking portions 131 atress extrusion bulb 14 simultaneously to make bulb 14 fixed to a certain extent, be convenient for first pivot 15 rotation regulation.

In this embodiment, the first rotating shaft is used for arranging a circuit and connected with the ball head, the ball head is arranged in the second locking ring, and the limiting member arranged on the ball head limits the rotation angle of the second locking ring of the ball head to be less than 360 degrees in the horizontal direction; the second locking ring is arranged in the first locking ring and can rotate in the first locking ring, the second locking ring can be limited to rotate up and down in the first locking ring through a first limiting groove formed in the shell 11, and the rotating angle is smaller than 360 degrees, so that the rotating angle of the first rotating shaft in the vertical direction is smaller than 360 degrees. The linking device in the embodiment can realize the flexible rotation of the lamp cap in the front-back direction and the left-right direction, can prevent the arranged circuit from rotating by more than 360 degrees, and avoids the winding of the circuit when the lamp cap rotates.

Referring to fig. 3, a tooth whitening apparatus according to a second embodiment of the present invention includes a support frame, a lamp head 30 and a connecting device 10 of the above embodiment. The supporting frame comprises a base 41, a supporting rod 42 fixed on the base 41 and a rotating arm 43 connected with the supporting rod 42. One end of the rotating arm 43 is fixedly connected to the housing 11 of the connector 10 by a fixing member such as a bolt, and the first rotating shaft 15 of the connector 10 is fixedly connected to the base 30. The other end of the rotating arm 43 is fixedly provided with a weight 44, and the weight 44 is used for balancing the weight of the lamp head and the connecting device.

The base 41 is used for supporting on the ground, and a plurality of pulleys may be provided at the bottom thereof for easy movement. The support rod 42 is provided with electric devices such as a power supply and a control panel. The supporting rod 42 and the rotating arm 43 are hollow to arrange a circuit, and the circuit is connected with the lamp head 30 through the supporting rod 42, the rotating arm 43 and the first rotating shaft 15 in sequence to supply power and control electricity to the lamp head 30. The circuit arrangement of the tooth whitening instrument is hidden in the instrument, and the wiring is regular and attractive.

The support rod 42 is connected to the pivot arm 43 in a pivoting manner via an arm linkage 50. As shown in fig. 4, the arm link 50 includes a fixed block 51 connected to the support rod 42 and a fixed block 52 connected to the rotating arm 43. The lower end of the fixing block 51 is inserted into the supporting rod 42 and fixed by a latch.

The fixing base 52 is formed with a first through hole 521 along the length direction thereof, and the rotating arm 43 transversely passes through the first through hole 521. For the convenience of assembly, the fixing base 52 can be formed by two fixing portions which are clamped together.

The lower portion of the fixing base 52 is formed with a second through hole 522, the second through hole 522 is communicated with the first through hole 521, and the fixing block 51 is inserted into the second through hole 522. The lower end of the rotating arm 43 is provided with a third through hole (not shown) opposite to the second through hole 522, and the circuit enters the fixed block from the supporting rod, extends out from the end of the upper end of the fixed block, and then enters the rotating arm through the second through hole and the third through hole in sequence.

A second rotating shaft (not shown) is fixedly disposed inside the fixing base 52, a through hole 511 adapted to the second rotating shaft is disposed at the upper end of the fixing block 51, and the fixing block 51 and the fixing base 52 are rotatably connected through the second rotating shaft.

The upper portion of the fixing block 51 is arc-shaped, a third limiting groove 523 adapted to the fixing block 51 is formed in the fixing seat 52, and the third limiting groove 523 is arc-shaped and used for limiting the rotation angle range of the rotating arm 43 around the second rotating shaft, so that the rotation angle of the rotating arm does not exceed 360 °.

As shown in fig. 5, a fixed shaft 60 is fixed to a lower end of the first rotating shaft 15, and a first pressing block 70 and a second pressing block 80 are fixed to an upper end and a lower end of the fixed shaft 60, respectively. A groove 71 is formed in one side of the first pressing block 70, and the first rotating shaft 15 is clamped in the groove 71. The second pressing block 80 is provided with a mounting hole, and the second pressing block 80 is fixedly connected with the lamp cap 30 through the mounting hole. The fixed shaft 60 and the lamp cap 30 are connected by the pressing action of the first pressing block 70 and the second pressing block 80. When the lamp head 30 is rotated up and down, the first compression block 70 and the second compression block 80 rotate together around the fixed shaft 60, and when the lamp head 30 rotates to the most point, the end of the groove 71 abuts against the first rotating shaft 15 to limit the lamp head 30 to rotate continuously; when the lamp cap 30 is rotated to the lowest point, the second pressing block 80 abuts against the first rotating shaft 15 to limit the lamp cap from rotating continuously, so that the lamp cap can rotate up and down within a certain angle range.

The tooth whitening instrument in the embodiment can realize three rotations:

firstly, the rotating arm realizes the rotation in the vertical direction through the arm rod connecting piece, and the rotating angle range does not exceed 360 degrees;

the lamp holder can rotate in the up-down direction and the left-right direction through a connecting device, and the rotating angles in the two directions do not exceed 360 degrees;

thirdly, the lamp holder rotates around the fixed shaft in the vertical direction, and the rotating angle does not exceed 360 degrees.

The tooth appearance of whitening in this embodiment, its circuit arrangement is hidden inside the instrument, and the wiring is regular, pleasing to the eye, and the lamp holder can rotate convenient the regulation from a plurality of directions moreover, has restricted simultaneously that the turned angle of lamp holder is less than 360, prevents that the circuit from twining.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A connecting device is characterized by comprising a shell and a rotating device fixed in the shell, wherein the rotating device comprises a first locking ring, a second locking ring arranged in the first locking ring, a ball head arranged in the second locking ring, and a first rotating shaft which penetrates through the inside of the ball head and is fixedly connected with the ball head, the lower end of the first rotating shaft is fixedly connected with a lamp holder, the inside of the first rotating shaft is hollow and is used for arranging a connecting circuit of the lamp holder, a limiting part is arranged on the ball head and is used for limiting the rotating angle of the ball head in the horizontal direction to be not more than 360 degrees, so that the angle of the lamp holder rotating along with the first rotating shaft in the horizontal direction is not more than 360 degrees, a first limiting groove is circumferentially arranged on the shell along the width direction of the shell, and the first rotating shaft penetrates through the first limiting groove and extends to the outer side of the shell, the first limiting groove is used for limiting the second locking ring to rotate in the first locking ring in the vertical direction by less than 360 degrees, so that the angle of the lamp head rotating along with the first rotating shaft in the vertical direction is less than 360 degrees.

2. The connecting device according to claim 1, wherein the limiting member comprises a limiting block disposed on the ball head, a second limiting groove adapted to the limiting block is formed on an inner wall of the second locking ring, the second limiting groove is arc-shaped, and a central angle of the second limiting groove is smaller than 360 °.

3. The connecting device according to claim 1, further comprising two locking devices respectively fixed to both sides of the first locking ring, wherein the second locking ring comprises two second locking portions symmetrically disposed on both sides of the ball head, wherein the first locking ring comprises two first locking portions symmetrically disposed on both sides of the second locking ring, wherein the two first locking portions respectively abut against the two second locking portions, and wherein the two locking devices are used for adjusting a distance between the two first locking portions.

4. A connecting device according to claim 3, wherein said locking means comprises a rotary member and a spring having one end connected to said rotary member, the other end of said spring being connected to said first locking portions on the same side, and both of said first locking portions are brought close to each other by compressing said spring by rotating said rotary member.

5. The connecting device as claimed in claim 4, wherein the rotating member includes a handle housing disposed at an end of the housing, a screw fixedly connected to the handle housing, and a nut fittingly connected to the screw, the nut abutting against the first locking portions, and each of the first locking portions has a fixing hole adapted to the screw.

6. A tooth whitening instrument comprises a support frame and a lamp cap, and is characterized by further comprising a connecting device according to any one of claims 1 to 5, wherein a shell of the connecting device is fixed on the support frame, the lamp cap is fixedly connected with a first rotating shaft of the connecting device, the support frame is hollow inside and used for arranging a circuit, and the circuit penetrates through the inside of the first rotating shaft and is connected with the lamp cap.

7. The tooth whitening apparatus according to claim 6, wherein the support frame comprises a base, a support rod fixed on the base, and a rotating arm connected with the support rod, the rotating arm is rotatably connected with the support rod, a housing of the connecting device is fixedly connected with one end of the rotating arm, and a balancing weight is fixedly arranged at the other end of the rotating arm and used for balancing the weight of the lamp holder and the connecting device.

8. The tooth whitening apparatus according to claim 7, wherein the support rod is connected to the rotating arm through an arm connecting member, the arm connecting member includes a fixing block connected to the support rod and a fixing block connected to the rotating arm, the rotating arm transversely passes through a first through hole formed in the fixing block, the fixing block is inserted into a second through hole formed in a lower end of the fixing block and is rotatably connected to the fixing block through a second rotating shaft, and a third through hole opposite to the second through hole is formed in a lower end of the rotating arm.

9. The tooth whitening apparatus according to claim 8, wherein the upper portion of the fixing block is arc-shaped, a third limiting groove adapted to the fixing block is formed in the fixing base, and the third limiting groove is used for limiting the rotation angle of the rotating arm about the second rotating shaft to be not more than 360 °.

10. The tooth whitening apparatus according to claim 6, wherein a fixed shaft is fixedly arranged at the lower end of the first rotating shaft in a transverse direction, a first pressing block and a second pressing block are respectively fixed at the upper end and the lower end of the fixed shaft, the second pressing block is fixedly connected with the lamp cap, a groove is formed in one side of the first pressing block, and the first rotating shaft is clamped in the groove.