CN116794793A - Linear clamping type driving mechanism - Google Patents

Abstract

The invention provides a linear clamping type driving mechanism for driving a rotatable ring of a lens of a camera to rotate, which comprises a base, a driving unit, a driven unit and a clamping unit, wherein the rotatable ring can be a focusing ring or a zooming ring. The camera is fixed on the base, and the driving unit and the driven unit are arranged on the base in a sliding way and are positioned on two opposite sides of the lens. The drive unit comprises at least one drive wheel and the driven unit comprises at least one idler wheel. The clamping unit is arranged on the base and used for driving the driving unit and the driven unit to synchronously move towards the lens so as to enable the driving wheel and the idle wheel to prop against the rotatable ring from different directions, wherein when the driving unit drives the rotatable ring to rotate through the driving wheel, the idle wheel rotates along with the rotatable ring.

Description

Linear clamping type driving mechanism

Technical Field

The present invention relates to a drive mechanism (driving mechanism), and in particular to a linear clamp drive mechanism (driving mechanism with linear clamp for rotatable ring on camera lens) for a rotatable ring of a camera lens.

Background

The quality of the image is not only greatly affected by the intensity of light, but also depends on whether the camera has proper focusing. Most of the commonly-used digital monocular reflex cameras (Digital Single Lens Reflex Camera, DSLR cameras) or mirror-free interchangeable lens cameras (Mirrorless Interchangeable Lens Cameras, MILC) in the market at present support an auto-focus mode, but also support a manual focus mode, so that a user can adjust the focus position at will through rotating a focus ring (focus ring). For a zoom lens (zoom lens), a user can further adjust a focal length range via rotating a zoom ring (zoom ring) before photographing to adjust a camera's angle of view without changing a photographing distance. Some products such as camera stabilizer (camera stabilizer) and robotic arm (robotic arm) are currently available in the market, and further equipped with an automatic zooming and/or focusing mechanism to allow a user to focus and/or focus without touching the lens.

Fig. 1 is a schematic diagram of an automatic zoom mechanism in the prior art. Referring to fig. 1, in the prior art, a camera 10 is locked on a base 20, a zoom mechanism 30 is locked on a round bar 21 of the base 20, and a gear 31 thereof is engaged with a toothed ring 32 sleeved on a zoom ring of a lens 11. Thus, the zoom mechanism 30 can drive the zoom ring of the lens 11 to rotate via the cooperation of the gear 31 and the ring gear 32. In this prior art, since the zoom mechanism 30 can swing around the round bar 21, it can be used with lenses 11 of various diameters. However, this design tends to cause the lens 11 and/or the zoom mechanism 30 to deflect due to the reaction force, causing the gear 31 and the ring gear 32 to slip and have to be reinstalled.

In another driving mode, for example, as shown in taiwan patent No. I373685, a collar is sleeved on a lens and fixed on a large gear, and a small gear is meshed with the large gear and driven by a motor to rotate, so as to achieve the purpose of driving the lens to stretch by the motor. However, this design does not allow a single size collar and large gear to be used with a variety of different diameter lenses. Therefore, there is a need to propose a zoom/focus driving mechanism that can be used with lenses of various sizes without causing lens deflection.

Disclosure of Invention

In order to solve the above-mentioned problems, an object of the present invention is to provide a linear clamping type driving mechanism for a rotatable ring of a camera lens, which can be used with various sizes of camera lenses, and can maintain the stability of the camera lens with a uniform clamping force when the rotatable ring of the camera lens is driven to rotate.

The invention provides a linear clamping type driving mechanism for driving a rotatable ring of a lens of a camera to rotate, wherein the rotatable ring can be a focusing ring (focus ring) or a zooming ring (zoom ring). The linear clamping type driving mechanism is composed of a base, a driving unit, a driven unit and a clamping unit. The camera is fixed on the base, and the driving unit and the driven unit are arranged on the base in a sliding way and are positioned on two opposite sides of the lens. The drive unit comprises at least one drive wheel and the driven unit comprises at least one idler wheel. The clamping unit is arranged on the base and used for driving the driving unit and the driven unit to synchronously move towards the lens so as to enable the driving wheel and the idle wheel to prop against the rotatable ring from different directions, wherein when the driving unit drives the rotatable ring to rotate through the driving wheel, the idle wheel rotates along with the rotatable ring.

In an embodiment of the invention, the base includes a fixing member and a sliding member. The driving unit and the driven unit are slidably arranged on the fixing piece, and the clamping unit is arranged on the fixing piece. The sliding piece is arranged on the fixing piece in a sliding mode, and the camera is fixed on the sliding piece in a fixed mode. One of the fixing piece and the sliding piece is provided with at least one guide part, the other of the fixing piece and the sliding piece is provided with at least one sliding part, and the camera can slide relative to the fixing piece along at least one of an axial direction of the lens, a radial direction of the lens and a transverse direction perpendicular to the axial direction and the radial direction through the cooperation of the guide part and the sliding part. In a particular embodiment of the invention, the securing member may be a sealing plate and may have a mounting face and a circular aperture therethrough. The lens can be aligned with the round hole, and the sliding piece, the driving unit, the driven unit and the clamping unit can be arranged on the mounting surface around the round hole. In another specific embodiment of the present invention, the guiding portion and the sliding portion are formed by at least one of a linear guide mechanism, a lead screw mechanism, a linear slide mechanism, and a rack and gear set.

In an embodiment of the invention, the driving unit and the driven unit are respectively disposed on the base by at least one of a linear guide mechanism, a lead screw mechanism, a linear slide mechanism, and a rack and gear set.

In an embodiment of the invention, the driving unit includes a connecting member and a motor. The connecting piece is arranged on the base in a sliding way, and the driving wheel is arranged on one side, facing the lens, of the connecting piece. The clamping unit is used for synchronously driving the connecting piece and the driven unit to move towards the lens, and the motor is connected with the driving wheel so as to drive the rotatable ring to rotate through the driving wheel.

In an embodiment of the invention, the number of driving wheels is plural, and the driving unit further includes a connecting member, a timing belt, and a motor. The connecting piece is arranged on the base in a sliding way, and at least one of the driving wheels is arranged on one side of the connecting piece, which faces the lens. The clamping unit is used for synchronously driving the connecting piece and the driven unit to move towards the lens, the timing belt is sleeved on the driving wheels, and the motor is connected to one of the driving wheels so as to drive the rotatable ring to rotate through the timing belt and the driving wheels.

In an embodiment of the invention, the driven unit further includes a connecting piece slidably disposed on the base, the idle wheel is disposed on a side of the connecting piece facing the lens, and the clamping unit is used for synchronously driving the driving unit and the connecting piece to move toward the lens.

In an embodiment of the invention, the number of the idle gears is plural, and the driven unit further includes a connecting member and a timing belt. The connecting piece is arranged on the base in a sliding way, and at least one of the idle wheels is arranged on one side of the connecting piece, which faces the lens. The clamping unit is used for synchronously driving the driving unit and the connecting piece to move towards the lens, and the timing belt is sleeved on the idler wheels.

In an embodiment of the invention, the driven unit further includes an encoder connected to the idler pulley for counting the number of turns of the rotatable ring.

In one embodiment of the present invention, the driving wheel and the idle wheel are respectively a rubber wheel (impeller), a gear (gear), or a combination thereof.

In an embodiment of the invention, the driving wheel and the idle wheel are respectively a rubber wheel, and a surface of the rubber wheel facing the rotatable ring has a texture (texture).

In an embodiment of the invention, the clamping unit is formed by at least one of a linear guide mechanism, a lead screw mechanism, a linear slide mechanism, and a rack and gear set.

In an embodiment of the invention, the clamping unit is driven by a motor to drive the driving unit and the driven unit to move towards the lens synchronously.

In one embodiment of the present invention, the clamping unit includes a lead screw, a first nut, and a second nut. The lead screw is provided with a first thread and a second thread, and the first thread and the second thread are provided with opposite thread winding directions (spiral direction). The first nut is screwed with the first thread, and the driving unit is connected to the first nut. The second nut is screwed with the second thread, and the driven unit is connected with the second nut. When the lead screw rotates, the first screw cap and the second screw cap drive the driving unit and the driven unit to synchronously move towards the lens. In a particular embodiment of the present invention, the lead screw may further have a handle, and the handle may be disposed between the first thread and the second thread. In another particular embodiment of the present invention, the lead screw may further have a handle, and one of the first thread and the second thread is disposed between the other of the first thread and the second thread and the handle.

In an embodiment of the invention, the linear clamping driving mechanism further includes at least one first elastic member and at least one second elastic member. The first elastic piece is configured between the driving unit and the clamping unit, and the second elastic piece is configured between the driven unit and the clamping unit.

In an embodiment of the invention, the linear clamping driving mechanism further includes a camera tilt adjusting unit disposed on the base, and the camera tilt adjusting unit includes at least one side plate, at least one rotating shaft, and another driving unit. The side plate is connected to one side of the base, the rotating shaft is connected to the side plate, and the other driving unit is used for driving the rotating shaft to drive the side plate and the base to rotate around the rotating shaft so as to adjust an inclination angle of the camera. In a specific embodiment of the present invention, the other driving unit drives the side plate and the base to rotate around the rotation shaft by a motor through a gear set, a timing belt set or a combination thereof.

Based on the above, the clamping unit of the present invention drives the driving unit and the driven unit to move synchronously towards the lens, so that the driving wheel and the idle wheel support the rotatable ring from different directions. Therefore, when the driving unit drives the rotatable ring to rotate through the driving wheel, the idler wheel can stably bear against the rotatable ring from the other direction so as to avoid deflection of the lens.

In order to make the above features and advantages of the present invention more comprehensible, several embodiments accompanied with figures are described in detail below.

Drawings

FIG. 1 is a schematic diagram of an automatic zoom mechanism according to the prior art.

Fig. 2 is a schematic diagram illustrating a linear clamping driving mechanism according to an embodiment of the invention.

Fig. 3 is a top view of the linear clamp drive mechanism shown in fig. 2.

Fig. 4 is a cross-sectional view taken along line A-A of fig. 2.

Fig. 5 is a schematic structural diagram of a linear clamping driving mechanism according to another embodiment of the invention.

Fig. 6 is a schematic structural diagram of a linear clamping driving mechanism according to another embodiment of the invention.

Reference numerals illustrate: 10-camera; 11-lens; 20-a base; 21-a round bar; 30-a zoom mechanism; 31-gear; 32-tooth ring; 100-linear clamping drive mechanism; 110-a base; 112-perforating; 114-a chute; 120-a driving unit; 122-drive wheels; 130-a driven unit; 132-idler; 140-a clamping unit; 142. 144-racks; 146-gear; 148-hand screwing the screw; 149-arrow; 200-cameras; 210-lens; 212-a rotatable ring; 300-base; 310-fixing piece; 312-mounting surface; 314-round holes; 320-slide; 322. 324-slide block; 326-quick release plate; 400-a driving unit; 410-a connector; 412-a connection plate; 420-driving wheels; 430-a motor; 500-slave units; 510-a connector; 512-connecting plates; 520-idler; 530-an encoder; 600-clamping units; 610-handle; 620. 630-lead screw; 640. 650-nut; 660. 670-an elastic member; 700-camera tilt adjustment unit; 710. 720-side plates; 730. 740-rotating shaft; 750-a drive unit; 752-motor; 754. 756-a gear; 758-timing belt; 800-camera.

Detailed Description

Fig. 2 is a schematic diagram illustrating a use state of a linear clamping type driving mechanism according to an embodiment of the present invention, fig. 3 is a top view of the linear clamping type driving mechanism shown in fig. 2, and fig. 4 is a cross-sectional view of fig. 2 along A-A. Referring to fig. 2 to 4, the linear clamping driving mechanism 100 is composed of a base 110, a driving unit 120, a driven unit 130 and a clamping unit 140, and is used for driving a rotatable ring 212 of a lens 210 of a camera 200 to rotate. In this embodiment, the lens 210 shown in fig. 4 is, for example, a zoom lens, and thus has two rotatable rings 212, namely a focus ring and a zoom ring. However, in other embodiments not shown, the lens may be a fixed focus lens, and the rotatable ring may be a focus ring.

Furthermore, the camera 200 is fixed on the base 110, and the driving unit 120 and the driven unit 130 are slidably disposed on the base 110 and located on opposite sides of the lens 210. In addition, the driving unit 120 includes at least one driving wheel 122, and the driven unit 130 includes at least one idle wheel 132. In addition, the clamping unit 140 is disposed on the base 110, and is used for driving the driving unit 120 and the driven unit 130 to move towards the lens 210 synchronously, so that the driving wheel 122 and the idle wheel 132 can support the rotatable ring 212 with uniform clamping force from different directions. Moreover, when the driving unit 120 drives the rotatable ring 212 via the driving wheel 122, the idle wheel 132 rotates along with the rotatable ring 212. Therefore, the linear clamping driving mechanism 100 of the present invention can be used with lenses 210 of various sizes, and does not cause the lenses 210 to deflect.

In more detail, in this embodiment, the base 110 may have a through hole 112, and the camera 200 may be locked to the base 110 by a screw (not shown) passing through the through hole 112. Furthermore, the base 110 may further have a sliding slot 114, and the clamping unit 140 may be formed by combining two racks 142, 144 disposed in the sliding slot 114, a gear 146 engaged between the racks 142 and 144, and a hand screw 148 connected to the gear 146. The driving unit 120 may be disposed in the chute 114 via a rack 142, and the driven unit 130 may be disposed in the chute 114 via a rack 144. Therefore, when the user turns the hand screw 148 clockwise, the gear 146 rotates along the arrow 149, and drives the driving unit 120 and the driven unit 130 to move towards the lens 210 synchronously via the racks 142 and 144, so that the driving wheel 122 and the idle wheel 132 are pressed against the rotatable ring 212 from different directions. Conversely, when the user turns the hand screw 148 in the counterclockwise direction, the gear 146 drives the driving unit 120 and the driven unit 130 to move away from the lens 210 synchronously via the racks 142 and 144, so that the driving wheel 122 and the idle wheel 132 release the rotatable ring 212.

In addition, in other embodiments not shown, the driving unit and the driven unit may be slidably disposed on the base by at least one of a linear guide mechanism, a lead screw mechanism, a linear slide mechanism, and a rack and gear set, respectively. In addition, in this embodiment, the driving wheel 122 driving the rotatable ring 212 to rotate is directly driven by a motor (not shown) of the driving unit 120. However, in other embodiments not shown, the driving unit may be composed of a plurality of driving wheels and a motor connected to one of the driving wheels. At this time, the driving wheel driving the rotatable ring to rotate can be indirectly driven by the motor. Further, the drive wheel may be a rubber wheel, a gear, or a combination thereof. For example, the motor may directly rotate a rubber wheel, which may then rotate via friction or a timing belt against the other rubber wheels of the rotatable ring. Alternatively, the motor may directly drive a gear to rotate, and the gear may be engaged with a toothed ring sleeved on the rotatable ring, with other gears engaged against the rotatable ring, or with other gears engaged against the rotatable ring via a timing belt.

Fig. 5 is a schematic structural diagram of a linear clamping driving mechanism according to another embodiment of the invention. Referring to fig. 5, in this embodiment, the base 300 may be formed by combining a fixing member 310 and a sliding member 320, wherein the fixing member 310 and the sliding member 320 may have at least one guiding portion and at least one sliding portion, respectively, so that the sliding member 320 may slide relative to the fixing member 310. For example, the fixture 310 may be a sealing plate and may have a mounting surface 312 and a circular hole 314 through the mounting surface 312. Furthermore, the slider 320 may be composed of two sliders 322, 324 and a quick release plate 326. The sliding block 322 is slidably disposed on the mounting surface 312 via a linear guide mechanism composed of a guide rod and a guide hole and is located below the circular hole 314, the sliding block 324 is also slidably disposed on the sliding block 322 via a linear guide mechanism composed of a guide rod and a guide hole, and the quick release plate 326 is slidably disposed on the sliding block 324 via a linear slide mechanism composed of a rib and a slide groove. In addition, the camera may be held on the quick release plate 326 and the lens may be aligned with the circular hole 314. Therefore, the camera can slide up and down along the radial direction of the lens along with the slider 324 and also slide left and right along the transverse direction of the lens along with the quick release plate 326 as well as slide back and forth along with the axial direction of the lens along with the slider 322. However, in other embodiments not shown, the guiding portion and the sliding portion may be formed by at least one of a linear guide mechanism, a lead screw mechanism, a linear slide mechanism, and a rack and gear set.

The driving unit 400 is disposed on the mounting surface 312, and may be composed of a connecting member 410, three driving wheels 420 disposed between two connecting plates 412 of the connecting member 410, a timing belt (not shown), and a motor 430 disposed on a side of the connecting member 410 away from the mounting surface 312 (for example, on the connecting plate 412 away from the mounting surface 312). The connecting member 410 is slidably disposed on the left side of the circular hole 314 via a linear guide mechanism composed of guide rods and guide holes. Two of the driving wheels 420 are, for example, a timing belt wheel formed by combining a gear and a rubber wheel, which are coaxial, and are disposed on one side of the connecting piece 410 facing the circular hole 314, and the other one of the driving wheels 420 is a gear connected to the rotation shaft of the motor 430, and the timing belt is sleeved on the gear of the driving wheels 420. Thus, the motor 430 can drive the driving wheels 420 to rotate synchronously via the timing belt. Moreover, the rubber wheels of the driving wheels 420 may have grooves on their surfaces to increase the friction force when the rubber wheels rotate the rotatable ring.

The driven unit 500 is also disposed on the mounting surface 312, and may be composed of a single link 510, three idler pulleys 520 disposed between two connection plates 512 of the link 510, a timing belt (not shown), and an encoder 530 disposed on a side of the link 510 away from the mounting surface 312 (for example, on the connection plate 512 away from the mounting surface 312). The connecting member 510 is slidably disposed on the right side of the circular hole 314 via a linear guide mechanism composed of guide rods and guide holes. Two of the idler pulleys 520 are, for example, a timing belt pulley formed by combining a gear and a rubber wheel, which are coaxial, and are disposed on one side of the connecting member 510 facing the circular hole 314, and the other one of the idler pulleys 520 is a gear connected to the rotation shaft of the encoder 530, and the timing belt is sleeved on the gear of the idler pulleys 520. Thus, the idler pulleys 520 can be synchronously rotated by the timing belt. Moreover, the surface of the rubber wheel of the idler wheels 520 can be further provided with grooves so as to improve the friction force when the rubber wheel drives the rotatable ring to rotate.

In addition, the clamping unit 600 is also disposed on the mounting surface 312, and may be composed of a single handle 610, two lead screws 620, 630, and two nuts 640, 650. In this embodiment, the handle 610 is disposed above the circular hole 314, for example. Furthermore, the lead screw 620 and the nut 640 may be locked to the left side of the handle 610 and have right-handed threads, and the driving unit 400 may be connected to the nut 640. In addition, the lead screw 630 and the nut 650 may be locked to the right side of the handle 610 and have left-hand threads, and the driven unit 500 may be coupled to the nut 650. Therefore, when the user rotates the handle 610 upward, the nuts 640, 650 move toward the handle 610 along the lead screws 620, 630 synchronously, respectively, to drive the driving unit 400 and the driven unit 500 to move toward the lens synchronously, so that the driving wheel 420 and the idle wheel 520 are abutted against the rotatable ring from different directions.

In this way, when the motor 430 drives the camera rotatable ring to rotate through the rubber wheel of the driving wheel 420, the rubber wheels of the two idle wheels 520 facing the circular hole 314 can stably support the rotatable ring from the other direction, so as to avoid deflection of the lens. Moreover, the two idler gears 520 also rotate along with the rotatable ring, and the idler gears 520 connected to the encoder 530 are synchronously driven to rotate by the cooperation of the gears and the timing belt, so that the encoder 530 can calculate the number of turns of the rotatable ring. Conversely, when the user turns the handle 610 downward, the nuts 640, 650 move synchronously along the lead screws 620, 630 away from the handle 610, and drive the driving unit 400 and the driven unit 500 to move synchronously away from the lens in different directions.

However, in other embodiments not shown, the clamping unit may be composed of only one handle, one lead screw, and two nuts. The left side of the lead screw and one of the nuts are provided with right-handed threads, the right side of the lead screw and the other nut are provided with left-handed threads, and the handle can be arranged on the left side of the right-handed threads, the right side of the left-handed threads or between the right-handed threads and the left-handed threads. In other words, the handle 610 may be disposed not only between the driving unit 400 and the driven unit 500 as shown in fig. 5, but also on the left side of the nut 640 or on the right side of the nut 650. In addition, in the present embodiment, the clamping unit 600 is formed by combining a linear guide mechanism, for example, but in other embodiments not shown, the clamping unit may be formed by combining a linear guide mechanism, a lead screw mechanism, a linear slide mechanism, and at least one of a rack and a gear set. In addition, in the present embodiment, the clamping unit 600 is manually driven, but in other embodiments not shown, the clamping unit may be driven by a motor.

Furthermore, in the present embodiment, the clamping unit 600 may further include elastic members 660 and 670. The driving unit 400 may be slidably disposed between two limiting ends of the nut 640, and the elastic element 660 may be sleeved on the nut 640 and located between the left limiting end of the nut 640 and the driving unit 400. Furthermore, the driven unit 500 may be slidably disposed between two limiting ends of the nut 650, and the elastic member 670 may be sleeved on the nut 640 and located between the right limiting end of the nut 650 and the driven unit 500. Therefore, if the user continues to rotate the handle 610 upward to drive the nuts 640, 650 to move toward the handle 610 synchronously after the driving wheel 420 and the idle wheel 520 abut against the rotatable ring, the elastic members 660, 670 are compressed to prevent the lens from being damaged due to excessive clamping force.

Fig. 6 is a schematic structural diagram of a linear clamping driving mechanism according to another embodiment of the invention. This embodiment is similar to the previous embodiment, except that the linear clamping driving mechanism of this embodiment further includes a camera tilt adjustment unit 700 disposed on the base 300. Referring to fig. 6, the camera tilt adjusting unit 700 is, for example, composed of two side plates 710, 720, two shafts 730, 740 and a driving unit 750. The side plates 710, 720 are respectively connected to the left and right sides of the base 300, and the shafts 730, 740 are respectively connected to the side plates 710, 720, and the axes of the shafts 730, 740 may be perpendicular to the center line of the circular hole 314.

Further, the drive unit 750 is, for example, composed of a motor 752, two gears 754, 756, and a timing belt 758. The motor 752 is mounted on the inner side of the side plate 710, the gear 754 is connected to the axial center of the motor 752, the gear 756 is rotatably fitted around the shaft 730 and connected to an outer case (not shown), and the timing belt 758 is fitted around the gears 754, 756. Thus, the motor 752 may drive the gear 756 to rotate about the shaft 730 via the gear 754 and the timing belt 758, thereby driving the side plates 710, 720, the base 300 and the camera 800 mounted on the base 300 to swing up and down about the shafts 730, 740 to adjust the tilt angle of the camera 800. It should be noted that in the present embodiment, the driving unit is formed by combining a motor and a gear set, for example. However, in other embodiments not shown, gear sets, timing belt sets, or combinations thereof may be used instead of gear sets in this embodiment.

In summary, the clamping unit is utilized to drive the driving unit and the driven unit to synchronously move towards the lens, so that the driving wheel and the idle wheel support the rotatable ring from different directions. Therefore, the linear clamping type driving mechanism can be matched with lenses with various sizes for use. Moreover, when the driving unit drives the rotatable ring to rotate through the driving wheel, the idler wheel can stably prop against the rotatable ring from the other direction so as to avoid deflection of the lens. Furthermore, the invention can further add elastic pieces between the clamping unit and the driving unit and between the clamping unit and the driven unit. Therefore, if the user still rotates the handle after the driving wheel and the idle wheel are propped against the rotatable ring, the elastic piece is compressed, so that the lens is prevented from being damaged due to excessive clamping force.

The above description is illustrative of the invention and is not to be construed as limiting, and it will be understood 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 (20)

1. A linear clamping type driving mechanism for driving a rotatable ring of a lens of a camera to rotate, comprising:

a base on which the camera is held;

the driving unit is arranged on the base in a sliding way and comprises at least one driving wheel;

the driven unit is arranged on the base in a sliding way and comprises at least one idler wheel, wherein the driving unit and the driven unit are positioned on two opposite sides of the lens; and

the clamping unit is arranged on the base and used for driving the driving unit and the driven unit to synchronously move towards the lens so as to enable the driving wheel and the idle wheel to prop against the rotatable ring from different directions, wherein when the driving unit drives the rotatable ring to rotate through the driving wheel, the idle wheel rotates along with the rotatable ring.

2. The linear clamp drive mechanism of claim 1, wherein the base comprises:

the driving unit and the driven unit are arranged on the fixing piece in a sliding way, and the clamping unit is arranged on the fixing piece; and

the camera is suitable for sliding relative to the fixed part along at least one of an axial direction of the lens, a radial direction of the lens and a transverse direction perpendicular to the axial direction and the radial direction through the matching of the guide part and the sliding part.

3. The linear clamping driving mechanism as claimed in claim 2, wherein the fixing member is a sealing plate and has a mounting surface and a circular hole penetrating the mounting surface, the lens is aligned with the circular hole, and the sliding member, the driving unit, the driven unit and the clamping unit are disposed on the mounting surface around the circular hole.

4. The linear clamping driving mechanism as claimed in claim 2, wherein the guiding portion and the sliding portion are formed by at least one of a linear guide mechanism, a lead screw mechanism, a linear slide mechanism, and a rack and gear set.

5. The linear clamping driving mechanism according to claim 1, wherein the driving unit and the driven unit are slidably disposed on the base by at least one of a linear guide mechanism, a lead screw mechanism, a linear slide mechanism, and a rack and gear set, respectively.

6. The linear clamp drive mechanism of claim 1, wherein the drive unit further comprises:

the clamping unit is used for synchronously driving the connecting piece and the driven unit to move towards the lens; and

a motor connected to the driving wheel to drive the rotatable ring to rotate via the driving wheel.

7. The linear clamp type drive mechanism of claim 1, wherein the number of drive wheels is plural, and the drive unit further comprises:

the clamping unit is used for synchronously driving the connecting piece and the driven unit to move towards the lens;

a timing belt sleeved on the driving wheels; and

a motor connected to one of the driving wheels for driving the rotatable ring to rotate via the timing belt and the driving wheels.

8. The linear clamping driving mechanism as claimed in claim 1, wherein the driven unit further comprises a connecting member slidably disposed on the base, the idler is disposed on a side of the connecting member facing the lens, and the clamping unit is used for synchronously driving the driving unit and the connecting member to move toward the lens.

9. The linear clamp driving mechanism of claim 1, wherein the number of idler gears is plural, and the driven unit includes:

the clamping unit is used for synchronously driving the driving unit and the connecting piece to move towards the lens; and

a timing belt sleeved on the idler wheels.

10. The linear clamp driving mechanism of claim 1, wherein the driven unit further comprises an encoder coupled to the idler wheel for counting one number of rotations of the rotatable ring.

11. The linear clamp driving mechanism according to claim 1, wherein the driving wheel and the idle wheel are respectively a rubber wheel, a gear or a combination thereof.

12. The linear clamp driving mechanism according to claim 1, wherein the driving wheel and the idle wheel are respectively a rubber wheel, and a surface of the rubber wheel facing the rotatable ring is provided with a notch.

13. The linear clamp type driving mechanism as claimed in claim 1, wherein the clamping unit is composed of at least one of a linear guide mechanism, a lead screw mechanism, a linear slide mechanism, and a rack and gear set.

14. The linear clamping driving mechanism according to claim 1, wherein the clamping unit is driven by a motor to drive the driving unit and the driven unit to move towards the lens synchronously.

15. The linear clamp type driving mechanism as claimed in claim 1, wherein the clamp unit comprises:

the lead screw is provided with a first thread and a second thread, and the first thread and the second thread are provided with opposite thread winding directions;

the first screw cap is in threaded engagement with the first screw thread, and the driving unit is connected to the first screw cap; and

the second screw cap is screwed with the second screw thread, the driven unit is connected with the second screw cap, and when the lead screw rotates, the first screw cap and the second screw cap drive the driving unit and the driven unit to synchronously move towards the lens.

16. The linear clamp driving mechanism of claim 15, wherein the lead screw further has a handle, and the handle is disposed between the first thread and the second thread.

17. The linear clamp actuation mechanism of claim 15, wherein the lead screw further has a handle, and one of the first thread and the second thread is disposed between the other of the first thread and the second thread and the handle.

18. The linear clamping driving mechanism as claimed in claim 1, further comprising at least one first elastic member and at least one second elastic member, wherein the first elastic member is disposed between the driving unit and the clamping unit, and the second elastic member is disposed between the driven unit and the clamping unit.

19. The linear clamp driving mechanism according to claim 1, further comprising a camera tilt adjustment unit disposed on the base, wherein the camera tilt adjustment unit comprises:

at least one side plate connected to one side of the base;

at least one rotating shaft connected to the side plate; and

the other driving unit is used for driving the rotating shaft, so as to drive the side plate and the base to rotate around the rotating shaft, and adjust an inclination angle of the camera.

20. The linear clamp driving mechanism according to claim 19, wherein the other driving unit drives the side plate and the base to rotate around the rotation shaft by a motor through a gear set, a timing belt set or a combination thereof.