CN216692905U - Transmission mechanism and shooting equipment - Google Patents

Abstract

The utility model belongs to the field of mechanical transmission, and particularly relates to a transmission mechanism and shooting equipment, wherein the transmission mechanism comprises a fixed support, a lifting driving assembly, a movable support and two guide pieces, and the movable support can move in the lifting direction relative to the fixed support under the driving of the lifting driving assembly; the two guide pieces are arranged on the fixed support along the lifting direction, and the two guide pieces are respectively connected to the two sides of the movable support along the lifting direction in a sliding manner so as to guide the movable support when the movable support moves along the lifting direction. The two guide pieces are respectively connected to the two sides of the movable support in a sliding manner, so that the movable support is balanced in overall stress during lifting movement, the stability of the lifting movement of the movable support is improved, and the service life of the transmission mechanism is prolonged.

Description

Transmission mechanism and shooting equipment

Technical Field

The utility model relates to the technical field of mechanical transmission, in particular to a transmission mechanism and shooting equipment.

Background

With the development of the full-face screen, in order to solve the use problem of shooting equipment on the mobile terminal, in the related art, the camera shooting assembly extends out of the interior of the mobile terminal when shooting and retracts into the interior of the mobile terminal when not shooting through the design of the transmission device.

However, when the driving device in the prior art drives the camera shooting assembly to move up and down, a guide structure is lacked, and after the driving device is lifted up and down for many times, the driving device is prone to causing the situation that the driving device moves and is stuck, so that the stability and the service life of the driving device are reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a transmission mechanism and shooting equipment, which are used for solving the problems that the existing transmission device is blocked in movement when driving a camera shooting assembly to move up and down, the stability of the transmission device is reduced and the service life of the transmission device is prolonged.

To this end, according to one aspect of the present application, there is provided a transmission mechanism comprising:

fixing a bracket;

the lifting driving assembly is arranged on the fixed bracket;

the movable support is arranged on the lifting driving assembly and can move along the lifting direction relative to the fixed support under the driving of the lifting driving assembly; and

the two guide pieces are arranged on the fixed support along the lifting direction and are respectively connected to two sides of the movable support along the lifting direction in a sliding mode so as to guide the movable support when the movable support moves along the lifting direction.

Optionally, the transmission mechanism further includes a rotating member rotatably disposed on the movable support, and a rotation driving assembly disposed on the movable support and connected to the rotating member for driving the rotating member to rotate relative to the movable support.

Optionally, the rotary driving assembly includes a guide rod, a rack, a first elastic member and a gear, the guide rod is disposed on the movable support along the lifting direction, the rack and the first elastic member are both sleeved on the guide rod, the rack is connected with the fixed support through the first elastic member, the gear is disposed at one end of the rotating member and meshed with the rack, a stopping portion is disposed at a preset position of the fixed support, a stopping block corresponding to the stopping portion is disposed on the rack, and when the rack moves to the preset position along with the movable support, the stopping block abuts against the stopping portion, so that the rack and the fixed support are relatively static.

Optionally, the guide is a sliding rod, two sliding sleeves are respectively arranged on two sides of the movable support along the lifting direction, and the two sliding sleeves are respectively slidably sleeved on the two sliding rods.

Optionally, one of the two sliding rods, which is far away from the guide rod, is sleeved with a second elastic member, one end of the second elastic member is fixedly connected with the sliding rod, and when the stopper abuts against the stopper, the other end of the second elastic member abuts against the corresponding sliding sleeve.

Optionally, the lifting driving assembly comprises a driving motor, a screw rod, a polished rod, a transmission nut and a moving frame, the screw rod and the polished rod are arranged along the lifting direction, the driving motor is connected with the screw rod, the transmission nut is screwed on the screw rod and sleeved on the polished rod, one end of the moving frame is connected with the transmission nut, and the other end of the moving frame is connected with the movable support.

Optionally, the lifting driving assembly further includes a guide rod and a first protection elastic member sleeved on the guide rod, the guide rod is disposed on the movable support along the lifting direction, one end of the movable support far away from the transmission nut is slidably sleeved on the guide rod, and the first protection elastic member abuts between the movable support and the movable support.

Optionally, the lifting driving assembly further includes a second protection elastic member, the moving frame is provided with a first sleeve ring and a second sleeve ring at intervals along the lifting direction at one end close to the transmission nut, the transmission nut is sleeved on one end of the polished rod and provided with a first ferrule and a second ferrule at intervals along the lifting direction, and the polished rod is sequentially sleeved with the first ferrule, the first sleeve ring, the second protection elastic member, the second ferrule and the second ferrule.

According to another aspect of the present application, there is provided a photographing apparatus including:

a transmission mechanism as described above; and

the camera shooting assembly is provided with a sleeve, the sleeve is sleeved on the rotating part and is fixedly connected with the rotating part, and the camera shooting assembly can rotate together with the rotating part under the driving of the rotary driving assembly.

Optionally, the outer wall of the sleeve is provided with a limiting protrusion, a limiting rib is arranged on a movement path of the limiting protrusion on the movable support, and the limiting protrusion is matched with the limiting rib to limit the rotation angle of the camera shooting assembly.

The application provides a drive mechanism and shooting equipment's beneficial effect lies in: compared with the prior art, this application drive mechanism sets up two guides through the direction of rise along the movable support on the fixed bolster, two guides respectively with the movable support along the both sides sliding connection of direction of rise, in order to lead the movable support when the movable support removes along the direction of rise, two guides respectively sliding connection in the both sides of movable support, make the movable support whole atress balanced when elevating movement, the stability of movable support elevating movement has been improved, drive mechanism's life has been prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Wherein:

fig. 1 is an overall configuration diagram of a photographing apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a photographing apparatus according to an embodiment of the present invention, with a fixing bracket removed;

FIG. 3 is a schematic view of the structure shown in FIG. 2 with the movable bracket removed;

fig. 4 is an exploded schematic view of a rotation driving assembly in the photographing apparatus according to an embodiment of the present invention;

fig. 5 is a main view of a photographing apparatus according to an embodiment of the present invention;

fig. 6 is a schematic sectional view along the line a-a in fig. 5.

Description of the main element symbols:

100. fixing a bracket; 101. a stopper portion;

200. a lift drive assembly; 210. a drive motor; 220. a screw rod; 230. a polish rod; 240. a drive nut; 241. a first ferrule; 242. a second ferrule; 250. a movable frame; 251. a first collar; 252. a second collar; 260. a guide rod; 270. a first protective elastic member; 280. a second protective elastic member;

300. a movable support; 301. a sliding sleeve; 302. limiting and blocking edges;

400. a camera assembly; 401. a sleeve; 4011. a limiting bulge;

500. a rotary drive assembly; 510. a guide bar; 520. a rack; 521. a stopper; 530. a first elastic member; 540. a gear;

600. a guide member;

700. a second elastic member;

800. a rotating member;

900. and (4) screws.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are 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" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

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 utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As described in the background art, when the transmission device in the prior art drives the camera shooting assembly to move up and down, a guide structure is lacked, and the transmission device is unevenly stressed and deflects after being lifted up and down for many times, so that the movement is blocked, and the stability and the service life of the transmission device are reduced.

In order to solve the above problem, according to an aspect of the present application, embodiments of the present application provide a transmission mechanism for improving stability of transmission motion and prolonging a service life thereof.

In the embodiment of the present invention, the driving of the camera module is taken as an example to describe the transmission mechanism, but the utility model is not limited thereto.

In one embodiment, as shown in fig. 1-3, the transmission mechanism includes a fixed bracket 100, a lift driving assembly 200, a movable bracket 300, and two guide members 600. The lifting driving assembly 200 is arranged on the fixed bracket 100; the movable bracket 300 is arranged on the lifting driving assembly 200, and the movable bracket 300 can move in the lifting direction relative to the fixed bracket 100 under the driving of the lifting driving assembly 200; the two guide members 600 are disposed on the fixed bracket 100 along the ascending and descending direction, and the two guide members 600 are slidably coupled to both sides of the movable bracket 300 along the ascending and descending direction, respectively, to guide the movable bracket 300 when the movable bracket 300 moves along the ascending and descending direction.

In the embodiment of the present invention, the transmission mechanism is provided with two guide members 600 on the fixed bracket 100 along the lifting direction of the movable bracket 300, the two guide members 600 are respectively connected with two sides of the movable bracket 300 along the lifting direction in a sliding manner to guide the movable bracket 300 when the movable bracket 300 moves along the lifting direction, and the two guide members 600 are respectively connected with two sides of the movable bracket 300 in a sliding manner, so that the overall stress of the movable bracket 300 during the lifting movement is balanced, the stability of the lifting movement of the movable bracket 300 is improved, and the service life of the transmission mechanism is prolonged.

It can be understood that the fixing bracket 100 plays a role in mounting the lifting driving component 200 and fixing the whole transmission mechanism to the outside (such as a mobile terminal with a camera, such as a mobile phone, a tablet, a computer, a learning machine, etc.).

It should be noted that the ascending and descending direction is the moving direction of the movable frame 300, and for the convenience of understanding, the ascending and descending direction is indicated by the X direction in the drawings.

In one embodiment, as shown in fig. 1 to 3, the transmission mechanism further includes a rotating member 800 and a rotary driving assembly 500, the rotating member 800 is rotatably disposed on the movable bracket 300, and the rotary driving assembly 500 is disposed on the movable bracket 300 and connected to the rotating member 800 for driving the rotating member 800 to rotate relative to the movable bracket 300.

Through set up rotation piece 800 and rotation driving assembly 500 on movable support 300, can drive rotation piece 800 and movable support 300 through lift drive assembly 200 and move along the direction of lift, can drive rotation piece 800 through rotation driving assembly 500 and rotate for movable support 300, set firmly camera shooting assembly 400 on rotation piece 800, can realize camera shooting assembly 400's elevating movement through this drive mechanism, can realize camera shooting assembly 400's rotary motion again.

Specifically, the rotating member 800 may be a rotating shaft.

In a more specific embodiment, as shown in fig. 1 to 4, the rotation driving assembly 500 includes a guide rod 510, a rack 520, a first elastic member 530 and a gear 540, the guide rod 510 is disposed on the movable bracket 300 along the lifting direction, the rack 520 and the first elastic member 530 are both sleeved on the guide rod 510, the rack 520 is connected to the fixed bracket 100 through the first elastic member 530, the gear 540 is disposed at one end of the rotation member 800 and engaged with the rack 520, a stopping portion 101 is disposed at a predetermined position of the fixed bracket 100, a stopper 521 corresponding to the stopping portion 101 is disposed on the rack 520, and when the rack 520 moves to the predetermined position along with the movable bracket 300, the stopper 521 abuts against the stopping portion 101, so that the rack 520 and the fixed bracket 100 are relatively stationary.

By designing the rotation driving assembly 500 as above, the rotation movement of the rotation member 800 can be realized during the lifting movement of the movable bracket 300, and the structure is simpler than that of the related art in which the rotation member 800 is driven by a motor.

Specifically, in the present embodiment, the first elastic member 530 is a spring, the stopping portion 101 is a frame disposed on the fixed bracket 100, and the movable bracket 300 and the rotating member 800 can pass through the frame.

The working principle of the transmission mechanism in this embodiment will be described below by taking the camera module 400 fixed on the rotating member 800 as an example:

extension process of the camera assembly 400: the lifting driving assembly 200 drives the movable support 300 to move outwards along the lifting direction under the guidance of the sliding rod, the movable support 300 moves to drive the rotary driving assembly 500 and the camera assembly 400 arranged on the movable support to move outwards synchronously, when the stop 521 on the rack 520 moves to a preset position, the stop 521 abuts against the stop part 101 on the fixed support 100 to stop moving, when the movable support 300, the camera assembly 400 and the guide rod 510 of the rotary driving assembly 500 continue to move outwards, the first elastic piece 530 connected with the rack 520 starts to be stressed and compressed, the gear 540 and the rack 520 start to move relatively, the lifting driving assembly 200 continues to work, and further the camera assembly 400 is completely extended and rotated to the right position;

retraction process of the camera assembly 400: the lifting driving assembly 200 drives the movable support 300 to move inward along the lifting direction under the guidance of the sliding rod, the rack 520 drives the gear 540 to rotate, the stopper 521 on the rack 520 is separated from the stopping portion 101, the first elastic member 530 is not stressed any more and starts to recover, the camera assembly 400 rotates to be parallel to the movable support 300, the lifting driving assembly 200 continues to work, and then the movable support 300, the camera assembly 400 and the rotary driving assembly 500 are driven to move downward until the camera assembly is completely retracted.

In a specific embodiment, as shown in fig. 1-2, the guiding element 600 is a sliding rod, two sliding sleeves 301 are respectively disposed on two sides of the movable bracket 300 along the lifting direction, and the two sliding sleeves 301 are respectively slidably sleeved on the two sliding rods.

The guide piece 600 is set to be a sliding rod, the sliding sleeves 301 are arranged on two sides of the movable support 300, and the movable support 300 is guided in the moving process by the sliding fit of the sliding sleeves 301 and the sliding rod, so that the guide structure is simple, and the operation is stable and reliable.

Of course, in other embodiments, the guide 600 may be a guide rail, and the sliding blocks engaged with the guide rail may be provided on both sides of the movable bracket 300, or the guide 600 may be a sliding block, and the guide grooves engaged with the sliding blocks may be provided on both sides of the movable bracket 300.

In a further specific embodiment, as shown in fig. 1 to 3, one of the two sliding rods, which is far away from the guide rod 510, is sleeved with a second elastic member 700, one end of the second elastic member 700 is fixedly connected with the sliding rod, and when the stopper 521 abuts against the stopper 101, the other end of the second elastic member 700 abuts against the corresponding sliding sleeve 301.

By sleeving the second elastic member 700 on a sliding rod away from the guide rod 510, in the extending process of the camera module 400, when the stopper 521 abuts against the stopper 101, the second elastic member 700 abuts against the corresponding sliding sleeve 301, and the elastic force of the first elastic member 530 on the movable bracket 300 is balanced by the elastic force of the second elastic member 700 on the movable bracket 300, so that the overall stress balance of the movable bracket 300 is maintained, and the stability of the lifting motion of the movable bracket 300 is further improved.

Specifically, the second elastic member 700 is a spring.

It can be understood that, in the process of extending the camera module 400, after the stop 521 on the rack 520 moves to the predetermined position and abuts against the stop portion 101 on the fixed bracket 100, when the movable bracket 300 continues to move outward, the first elastic member 530 connected to the rack 520 is compressed by a force to generate an elastic force to the movable bracket 300, the elastic force generates a tipping moment to the movable bracket 300, and by sleeving the second elastic member 700 on a slide rod far away from the guide rod 510, the slide sleeve 301 compresses the second elastic member 700 when the movable bracket 300 continues to move outward to generate a moment opposite to the tipping moment to the movable bracket 300, so that the whole force applied to the movable bracket 300 is balanced.

In one embodiment, as shown in fig. 1-3, the lifting driving assembly 200 includes a driving motor 210, a lead screw 220, a polish rod 230, a driving nut 240, and a moving frame 250, wherein the lead screw 220 and the polish rod 230 are both disposed along the lifting direction, the driving motor 210 is connected to the lead screw 220, the driving nut 240 is screwed to the lead screw 220 and sleeved on the polish rod 230, and one end of the moving frame 250 is connected to the driving nut 240, and the other end is connected to the movable frame 300.

The transmission is realized by the matching of the screw rod 220 and the transmission nut 240, so that the lifting motion of the movable bracket 300 is more stable and reliable.

Specifically, the working principle of the lifting driving assembly 200 is as follows: in the process of extending the camera module 400, the driving motor 210 drives the screw rod 220 to rotate, the screw rod 220 rotates to realize the outward movement of the transmission nut 240 along the polish rod 230, and the movable support 300 is driven to extend outward by the movable support 250; in the retraction process of the camera module 400, the driving motor 210 drives the screw rod 220 to rotate in the opposite direction, the screw rod 220 rotates to enable the transmission nut 240 to move inwards along the polish rod 230, and then the movable support 300 is driven to retract inwards by the movable support 250.

In a specific embodiment, as shown in fig. 2-3, the lifting driving assembly 200 further includes a guiding rod 260 and a first protection elastic member 270 sleeved on the guiding rod 260, the guiding rod 260 is disposed on the movable bracket 300 along the lifting direction, one end of the movable bracket 250 away from the transmission nut 240 is slidably sleeved on the guiding rod 260, and the first protection elastic member 270 abuts between the movable bracket 300 and the movable bracket 250.

Through set up guide bar 260 on movable support 300 and establish first protection elastic component 270 and be used for removing being connected of frame 250 and movable support 300 on guide bar 260 cover, first protection elastic component 270 is except playing the connection effect, thereby the effect of protection mechanism can also be played in a buffer power when camera module 400 receives external force (for example collide or fall), simultaneously, will remove the frame 250 and connect the stroke that the one end that first protection elastic component 270 kept away from camera module 400 can also improve camera module 400's elevating movement.

Specifically, the first protection elastic member 270 is a spring.

In some embodiments, as shown in fig. 1, the lifting driving assembly 200 further includes a second protective elastic member 280, a first collar 251 and a second collar 252 are disposed at an interval along a lifting direction at one end of the moving frame 250 close to the transmission nut 240, a first collar 241 and a second collar 242 are disposed at an interval along a lifting direction at one end of the transmission nut 240 sleeved on the polish rod 230, and the first collar 241, the first collar 251, the second protective elastic member 280, the second collar 242, and the second collar 252 are sequentially sleeved on the polish rod 230.

The polish rod 230 is sequentially sleeved with the first ferrule 241, the first collar 251, the second protective elastic element 280, the second ferrule 242, and the second collar 252, so that when the camera module 400 is subjected to an external force (e.g., collision or falling), a buffering force can be generated to play a role of a protective mechanism.

Specifically, the second protective elastic member 280 is a spring.

According to another aspect of the present application, an embodiment of the present application further provides a shooting apparatus, which includes the transmission mechanism as described above and a camera module 400, the camera module 400 has a sleeve 401, the sleeve 401 is sleeved on the rotation member 800 and is fixedly connected to the rotation member 800, and the camera module 400 and the rotation member 800 can rotate together under the driving of the rotation driving module 500.

Because the shooting equipment adopts the transmission mechanism, the shooting equipment further has the advantages and benefits brought by the transmission mechanism, and the detailed description is omitted.

Through set up sleeve 401 on subassembly 400 makes a video recording, wear to establish and fix the rotation piece 800 that is connected with the activity support 300 rotation in sleeve 401, the production equipment of being convenient for.

Specifically, as shown in fig. 5-6, the rotation member 800 and the sleeve 401 may be fixedly connected by a screw 900.

Of course, in other embodiments, the rotation member 800 may be formed as a single piece with the camera module 400, such as by injection molding of plastic or metal.

It should be noted that the shooting device can be applied to mobile terminals such as mobile phones, computers, tablets, learning machines, smart watches, and home education machines.

In some embodiments, as shown in fig. 3 to 4 and fig. 6, the outer wall of the sleeve 401 is provided with a limiting protrusion 4011, the movable support 300 is provided with a limiting rib 302 on a moving path of the limiting protrusion 4011, and the limiting protrusion 4011 cooperates with the limiting rib 302 to limit the rotation angle of the camera assembly 400.

Through set up spacing arch 4011 at sleeve 401 outer wall, spacing arch 4011 can avoid making a video recording subassembly 400 to appear turning over in rotatory in-process with the spacing flange 302 cooperation on the movable support 300.

Specifically, when the camera module 400 is rotated to the position, the limiting protrusion 4011 on the outer wall of the sleeve 401 abuts against the limiting rib 302 on the movable support 300.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A transmission mechanism, comprising:

fixing a bracket;

the lifting driving assembly is arranged on the fixed bracket;

the movable support is arranged on the lifting driving assembly and can move along the lifting direction relative to the fixed support under the driving of the lifting driving assembly; and

the two guide pieces are arranged on the fixed support along the lifting direction and are respectively connected to the two sides of the movable support along the lifting direction in a sliding mode so as to guide the movable support when the movable support moves along the lifting direction.

2. The transmission mechanism as claimed in claim 1, further comprising a rotating member rotatably disposed on the movable support, and a rotary driving assembly disposed on the movable support and connected to the rotating member for driving the rotating member to rotate relative to the movable support.

3. The transmission mechanism according to claim 2, wherein the rotary driving assembly includes a guide rod, a rack, a first elastic member, and a gear, the guide rod is disposed on the movable bracket along the lifting direction, the rack and the first elastic member are both sleeved on the guide rod, the rack is connected to the fixed bracket through the first elastic member, the gear is disposed at one end of the rotating member and engaged with the rack, a stopping portion is disposed at a predetermined position of the fixed bracket, a stopper corresponding to the stopping portion is disposed on the rack, and when the rack moves to the predetermined position along with the movable bracket, the stopper abuts against the stopping portion, so that the rack and the fixed bracket are relatively stationary.

4. The transmission mechanism according to claim 3, wherein the guiding member is a sliding rod, and two sliding sleeves are respectively disposed on two sides of the movable bracket along the lifting direction, and are respectively slidably sleeved on the two sliding rods.

5. The transmission mechanism according to claim 4, wherein a second elastic member is sleeved on one of the two sliding rods far away from the guide rod, one end of the second elastic member is fixedly connected with the sliding rod, and when the stopper abuts against the stopper, the other end of the second elastic member abuts against the corresponding sliding sleeve.

6. The transmission mechanism according to claim 2, wherein the lifting driving assembly includes a driving motor, a lead screw, a polished rod, a driving nut, and a movable frame, the lead screw and the polished rod are disposed along the lifting direction, the driving motor is connected to the lead screw, the driving nut is screwed to the lead screw and sleeved on the polished rod, one end of the movable frame is connected to the driving nut, and the other end of the movable frame is connected to the movable frame.

7. The transmission mechanism as claimed in claim 6, wherein the lifting driving assembly further includes a guiding rod and a first protection elastic member sleeved on the guiding rod, the guiding rod is disposed on the movable bracket along the lifting direction, one end of the movable bracket away from the transmission nut is slidably sleeved on the guiding rod, and the first protection elastic member abuts between the movable bracket and the movable bracket.

8. The transmission mechanism according to claim 6 or 7, wherein the lifting driving assembly further comprises a second protective elastic member, a first collar and a second collar are disposed at an interval along the lifting direction at an end of the moving frame close to the transmission nut, a first ferrule and a second ferrule are disposed at an interval along the lifting direction at an end of the polished rod, and the first ferrule, the first collar, the second protective elastic member, the second ferrule and the second ferrule are sequentially sleeved on the polished rod.

9. A photographing apparatus, characterized by comprising:

a transmission mechanism as claimed in any one of claims 2 to 8; and

the camera shooting assembly is provided with a sleeve, the sleeve is sleeved on the rotating part and fixedly connected with the rotating part, and the camera shooting assembly can rotate together with the rotating part under the driving of the rotary driving assembly.

10. The shooting device according to claim 9, wherein a limiting protrusion is provided on an outer wall of the sleeve, a limiting rib is provided on a moving path of the limiting protrusion on the movable bracket, and the limiting protrusion cooperates with the limiting rib to limit a rotation angle of the camera assembly.

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