A camera slide structure

Abstract

This invention relates to the field of camera auxiliary equipment, and aims to provide a camera slide rail structure with advantages such as simple structure, low cost, high stability, and ease of use. The technical solution adopted is as follows: A camera slide rail structure includes a slide rail and a trolley. A rotating component is provided on the trolley, and a drive mechanism for driving the trolley to move and / or the rotating component to rotate is provided on the slide rail. The drive mechanism includes two sets of wheel sets mounted on the slide rail and a timing belt. Each wheel set includes a drive wheel and a driven wheel. The trolley has two guide wheels, one of which is connected to the rotating component. One guide wheel is located between the drive wheel and the driven wheel in one wheel set, and the other guide wheel is located between the drive wheel and the driven wheel in the other wheel set. The timing belt sequentially passes through the drive wheel of the first wheel set, the first guide wheel, the driven wheel of the first wheel set, the drive wheel of the second wheel set, the second guide wheel, and the driven wheel of the second wheel set.

Description

Technical Field

[0001] This invention relates to the field of camera auxiliary equipment, and more specifically to a camera slide rail structure. Background Technology

[0002] A camera slider is an auxiliary device used to move or rotate a camera during shooting. It mainly consists of a slider, a carriage, and a motor control system (the motor control system comprises a motor and its control system, hereinafter referred to as the electronic control system). Currently, most products only allow for translational sliding. A few sliders achieve multi-degree-of-freedom control, including both sliding and rotation of the camera, but this discussion focuses on multi-degree-of-freedom products. The implementation is simple: a rotational electronic control system is installed on the carriage of the camera slider to achieve multi-degree-of-freedom control.

[0003] This method has its own drawbacks: First, the weight of the trolley will increase, which will increase its energy consumption and reduce its effective load. At the same time, the acceleration and reaction speed of the trolley will decrease, resulting in poor performance.

[0004] Secondly, installing a rotary electronic control system on the trolley increases the height between the camera and the track, lengthening the lever arm. This makes the camera very unstable during acceleration and deceleration, prone to noticeable shaking, which is fatal for shooting. Thirdly, the rotary electronic control system requires power and communication, usually through a cable connection to the main unit or through a separate battery and wireless communication. Cables make the product more cumbersome to use, and using a separate battery increases the weight of the trolley. Using wireless communication for linkage reduces system stability, causing sluggishness and disconnection problems, which greatly affects the efficiency of use. Fourthly, driving a heavier trolley requires a larger motor and a more powerful drive circuit, as well as a stronger mechanical structure, which significantly increases manufacturing costs. Summary of the Invention

[0005] The purpose of this invention is to provide a camera slide rail structure that has the advantages of simple structure, low cost, strong stability and easy use.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is: a camera slide rail structure, including a slide rail, a trolley slidably connected on the slide rail, a rotating component for mounting a camera rotatably connected on the trolley, and a drive mechanism for driving the trolley to move and / or the rotating component to rotate on the track;

[0007] The drive mechanism includes two sets of wheel sets mounted on the slide rail, each set of wheel sets including a drive wheel and a driven wheel; the trolley is provided with two guide wheels, one of which is connected to the rotating component; and one of the guide wheels is located between the drive wheel and the driven wheel in one set of wheel sets, while the other guide wheel is located between the drive wheel and the driven wheel in the other set of wheel sets;

[0008] The drive mechanism also includes a ring-shaped synchronous belt, which passes sequentially through the drive wheel of the first set of wheels, the first guide wheel, the driven wheel of the first set of wheels, the drive wheel of the second set of wheels, the second guide wheel, and the driven wheel of the second set.

[0009] Preferably, the trolley includes a first plate and a second plate, which are connected by multiple support columns. Two guide wheels are mounted on the upper surface of the second plate, and four pulleys are provided on the lower surface of the second plate, all of which abut against the slide rail.

[0010] Preferably, the slide rail includes a track, with limiting grooves on both sides of the track, the pulley abutting against the limiting grooves, and mounting platforms at both ends of the track; the drive wheel and the driven wheel are both mounted on the mounting platforms.

[0011] Preferably, the outer diameter of the guide wheel connected to the rotating component is larger than the outer diameter of the other guide wheel, and a plurality of limiting wheels are provided on one side of the guide wheel with the larger outer diameter to limit the distance between the timing belts passing through the guide wheel.

[0012] Preferably, each of the drive wheels is connected to a motor, and the motor is mounted on a mounting platform.

[0013] Preferably, the timing belt is a toothed belt.

[0014] Preferably, one of the mounting platforms is provided with an adjustment component for adjusting the tension of the timing belt. The adjustment component includes a strip hole on the mounting platform, a T-shaped rod passing through the strip hole, the top end of the T-shaped rod being connected to one of the driven wheels, a limit plate being connected to the edge of the mounting platform, a swivel screw passing through the limit plate, one end of the swivel screw being connected to the T-shaped rod, and a nut being provided on the swivel screw located outside the limit plate.

[0015] The beneficial effects of this invention are mainly reflected in:

[0016] 1. Improved Performance: Compared to existing technologies, the trolley no longer requires an electronic control system, resulting in reduced weight and height, thus decreasing camera shake. It also reduces energy consumption of the camera rail and increases payload. Since the two motors are no longer independent, they can work together to drive the trolley's movement, leading to a significant performance improvement.

[0017] 2. Cost reduction: Due to the reduced weight of the trolley and the improved motion performance of the coupled motors, the camera slide rail can be equipped with a lower-power electronic control system. In addition, compared with existing technologies, the electronic control system cable can be concealed and run through, eliminating the need for telescopic cables or batteries, and eliminating the need for wireless communication, which will significantly reduce the cost of the product and increase its cost-effectiveness.

[0018] 3. Easy to use: Since both motors are mounted on the track and delivered to the user as a whole, the user can take it out and use it immediately to complete the shooting task. Compared with the splicing design of existing products, it is more convenient and efficient to use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is the first layout structure of the limiting wheel of the present invention;

[0021] Figure 3 This is the second layout structure of the limiting wheel of the present invention;

[0022] Legend: 1. Drive wheel; 2. Driven wheel; 3. Guide wheel; 4. Rotating component; 5. Synchronous belt; 6. First plate; 7. Second plate; 8. Support column; 9. Pulley; 10. Track; 11. Limiting groove; 12. Mounting platform; 13. Limiting wheel; 14. Motor; 15. Strip hole; 16. T-shaped rod; 17. Limiting plate; 18. Sliding screw. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 As shown, a camera slide rail structure includes a slide rail with two parts: a track 10 and mounting platforms 12 at both ends of the track 10. Limiting grooves 11 are provided on both sides of the track 10. A trolley is slidably connected to the slide rail. The trolley includes a first plate 6 and a second plate 7, which are connected by multiple support columns 8. In this embodiment, four support columns 8 are preferably used. The support columns 8 are connected to the first plate 6 and the second plate 7 by bolts. Two guide wheels 3 are mounted on the upper surface of the second plate 7. Four pulleys 9 are provided on the lower surface of the second plate 7, and the pulleys 9 abut against the slide rail. A rotating component 4 for mounting a camera is rotatably connected to the trolley. The rotating component 4 can be a rotating shaft and passes through the first plate. A drive mechanism is provided on the track 10 for driving the trolley to move and / or the rotating component 4 to rotate.

[0025] The drive mechanism includes two sets of wheels mounted on the slide rail. One set of wheels is mounted on the mounting platform 12 at one end of the track 10, and the other set of wheels is mounted on the mounting platform 12 at the other end of the track 10. Each set of wheels includes a drive wheel 1 and a driven wheel 2. The trolley is provided with two guide wheels 3, both of which are mounted on the second plate 7. One guide wheel 3 is connected to the rotating component 4. One guide wheel 3 is located between the drive wheel 1 and the driven wheel 2 in one set of wheels, and the other guide wheel 3 is located between the drive wheel 1 and the driven wheel 2 in the other set of wheels.

[0026] The drive mechanism also includes a ring-shaped synchronous belt 5, which passes sequentially through the drive wheel 1 of the first set of wheels, the first guide wheel 3, the driven wheel 2 of the first set of wheels, the drive wheel 1 of the second set of wheels, the second guide wheel 3, and the driven wheel 2 of the second set. That is, the drive wheels 1 and driven wheels 2 of the two sets of wheels form a quadrilateral structure. The synchronous belt 5 between the drive wheels 1 and driven wheels 2 of the first set is wrapped around a guide wheel 3, and the synchronous belt 5 between the drive wheels 1 and driven wheels 2 of the second set is wrapped around another guide wheel 3, with the drive wheel 1 located on the diagonal of the quadrilateral.

[0027] Furthermore, each of the drive wheels 1 is connected to a motor 14, which is mounted on the mounting platform 12. Both the drive wheels 1 and the guide wheels 3 connected to the rotating component 4 are provided with external teeth, and the synchronous belt 5 is a toothed belt.

[0028] When using, such as Figure 2 As shown, when the two drive wheels 1 rotate in the same direction and at the same speed, the timing belt 5 moves, and the timing belt 5 on the left guide wheel 3 and the timing belt 5 on the right guide wheel 3 rotate in opposite directions. At this time, the same tension is generated on both sides of the trolley, and the trolley is stationary. During the rotation of the timing belt 5, it will drive the guide wheel 3 to rotate, which in turn drives the rotating shaft to rotate. When the camera is mounted on the rotating shaft 4, the camera itself rotates while the trolley does not move.

[0029] When the two drive wheels 1 rotate at the same speed but in opposite directions, that is, one rotates clockwise and the other rotates counterclockwise, the two parts of the synchronous belt 5 on the guide wheel 3 on the left or right side will exert a pulling force on the guide wheel 3 in the same direction to the left or right. At this time, the trolley can be driven to move left and right on the slide rail; that is, the trolley can slide on the track 10 while the camera itself does not rotate.

[0030] When the two drive wheels 1 rotate at different speeds and in opposite directions, the trolley is a superposition of the two motion states mentioned above, that is, the trolley slides on the track 10, and the camera itself will also rotate.

[0031] Furthermore, in this embodiment, there are two situations regarding the diameter of the two guide wheels 3: the outer diameters of the two guide wheels 3 are the same, one guide wheel 3 has a smaller outer diameter, and the other guide wheel 3 has a larger outer diameter. The larger guide wheel 3 is connected to the rotating component 4. Using the guide wheel 3 with a larger outer diameter can slow down the rotation of the camera, thereby reducing the difficulty of camera rotation control and increasing the accuracy of camera rotation control.

[0032] When the outer diameters of the two guide wheels 3 are the same, the position and outer diameter of the guide wheels 3 are not limited.

[0033] When the outer diameters of the two guide wheels 3 are different, there is a process of the trolley moving left and right on the slide rail. In order to ensure that the timing belt 5 does not loosen or tighten due to the movement of the trolley, it is necessary to keep the amount of belt extension and retraction on the left guide wheel 3 consistent with the amount of belt extension and retraction on the right guide wheel 3. Therefore, multiple limiting wheels 13 are provided on one side of the guide wheel 3 with the larger outer diameter to limit the distance between the timing belts 5 passing through the guide wheel 3.

[0034] In this embodiment, depending on the number of limiting wheels 13, there are two configuration types. When two limiting wheels 13 are provided, such as... Figure 2 As shown, both limiting wheels 13 are located on the right side of the large guide wheel 3. The two limiting wheels 13 press the synchronous belt 5 inward to make the amount of winding and unwinding of the synchronous belt 5 on both sides of the trolley consistent. In this arrangement, the synchronous belt 5 is a double-sided toothed belt. Furthermore, in this structure, the size of the guide wheel 3 is not limited to the size of the drive wheel 1 and the driven wheel 2. That is, the two sections of synchronous belt 5 on the guide wheels 3 on the left and right sides can be parallel or figure-eight shaped.

[0035] Three limit wheels 13 can be set, such as Figure 3 As shown, two limiting wheels 13 are set on the second plate 7, and a third limiting wheel 13 is set on the mounting platform 12. At this time, it is necessary to limit the size of the limiting wheels 13 or the distance between the driving wheel 1 and the driven wheel 2, that is, to ensure that the two sections of synchronous belt 5 on the guide wheels 3 on the left and right sides are parallel structures. The first limiting wheel 13 and the second limiting wheel 13 are located on the left and right sides of the large guide wheel 3. The two ends of the synchronous belt 5 on the right side of the first limiting wheel 13 and the second limiting wheel 13 are kept parallel, while the large guide wheel 3 is pressed against the synchronous belt 5 of the first limiting wheel 13 and the second limiting wheel 13. The synchronous belt 5 of this arrangement is a single-sided toothed belt, and this structure is convenient for replacing guide wheels 3 of different sizes, making it highly practical.

[0036] When it is necessary to replace the guide wheel 3 of different sizes, the tension of the timing belt 5 needs to be adjusted. Therefore, an adjustment component for adjusting the tension of the timing belt 5 is provided on one of the mounting platforms 12. The adjustment component includes a strip hole 15 provided on the mounting platform 12, and a T-shaped rod 16 passing through the strip hole 15. The top end of the T-shaped rod 16 is connected to one of the driven wheels 2. A limit plate 17 is connected to the edge of the mounting platform 12. A swivel screw 18 passes through the limit plate 17. One end of the swivel screw 18 is connected to the T-shaped rod 16. A nut is provided on the swivel screw 18 located outside the limit plate 17. By rotating the nut, the driven wheel 2 on the left side is moved to the left or right, thereby realizing the adjustment of the tension of the timing belt 5.

[0037] It should be noted that, for the sake of simplicity, the aforementioned method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, because according to this application, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and units involved are not necessarily essential to this application.

Claims

1. A camera slide rail structure, comprising a slide rail, a trolley slidably connected to the slide rail, and a rotating component (4) for mounting a camera rotatably connected to the trolley; characterized in that: The slide rail is provided with a drive mechanism for driving the trolley to move and / or rotating the rotating component (4) to rotate; The drive mechanism includes two sets of wheel sets arranged on the slide rail, each set of wheel sets including a drive wheel and a driven wheel; the trolley is provided with two guide wheels, one of which is connected to the rotating part (4); and one of the guide wheels is located between the drive wheel and the driven wheel in one set of wheel sets, and the other guide wheel is located between the drive wheel and the driven wheel in another set of wheel sets; The drive mechanism also includes a ring-shaped synchronous belt (5), which passes sequentially through the drive wheel of the first set of wheels, the first guide wheel, the driven wheel of the first set of wheels, the drive wheel of the second set of wheels, the second guide wheel, and the driven wheel of the second set of wheels; Among them, the driving wheels and driven wheels of the two sets of wheels form a quadrilateral structure. The synchronous belt (5) between the driving wheels and driven wheels of the first set is wrapped around a guide wheel, and the synchronous belt (5) between the driving wheels and driven wheels of the second set is wrapped around another guide wheel. The driving wheels are located on the diagonal of the quadrilateral. The drive wheel and the guide wheel connected to the rotating part (4) are both provided with external teeth, while the synchronous belt (5) is a toothed belt.

2. The camera slide rail structure according to claim 1, characterized in that: The trolley includes a first plate (6) and a second plate (7). The first plate (6) and the second plate (7) are connected by multiple support columns (8). Two guide wheels are installed on the upper surface of the second plate (7). Four pulleys (9) are provided on the lower surface of the second plate (7). The pulleys (9) abut against the slide rail.

3. The camera slide rail structure according to claim 2, characterized in that: The slide rail includes a track (10), and both sides of the track (10) are provided with limiting grooves (11). The pulley (9) abuts against the limiting grooves (11). The two ends of the track (10) are provided with mounting platforms (12), and the driving wheel and the driven wheel are both mounted on the mounting platform (12).

4. The camera slide rail structure according to claim 3, characterized in that: The outer diameter of the guide wheel connected to the rotating part (4) is larger than that of the other guide wheel, and a plurality of limiting wheels (13) are provided on one side of the guide wheel with a larger outer diameter to limit the distance between the synchronous belts (5) passing through the guide wheel.

5. A camera slide rail structure according to claim 3, characterized in that: Each drive wheel is connected to a motor (14), and the motor (14) is mounted on the mounting platform (12).

6. A camera slide rail structure according to claim 3, characterized in that: One of the mounting platforms (12) is provided with an adjustment component for adjusting the tension of the timing belt (5). The adjustment component includes a strip hole (15) on the mounting platform (12). A T-shaped rod (16) is inserted through the strip hole (15). The top end of the T-shaped rod (16) is connected to one of the driven wheels. A limit plate (17) is connected to the edge of the mounting platform (12). A swivel screw (18) is inserted through the limit plate (17). One end of the swivel screw (18) is connected to the T-shaped rod (16). A nut is provided on the swivel screw (18) located outside the limit plate (17).

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