Telescopic arm device for camera

Abstract

The utility model relates to a telescopic arm device for a camera. The telescopic arm device comprises a suspension assembly, a fixed arm, a first-stage lifting arm and a second-stage lifting arm, the hanging assembly comprises a base and a supporting plate which are arranged in parallel, and the base is fixedly connected with the supporting plate. One end of the fixed arm is provided with an opening, and the other end of the fixed arm penetrates through the supporting plate and is fixedly connected with the base; the bottom end of the first-stage lifting arm is inserted into the cavity of the fixed arm through the opening of the fixed arm and can move in the fixed arm in the body length direction of the fixed arm. One end of the second-stage lifting arm is inserted into the cavity of the first-stage lifting arm through the opening in the top end of the first-stage lifting arm and can move in the first-stage lifting arm in the body length direction of the first-stage lifting arm, and the other end of the second-stage lifting arm is suitable for placing a camera; a first supporting buffer piece is arranged in the fixed arm; according to the invention, the two-stage lifting of the camera can be realized, the height change stroke is large, the requirements of various shooting scenes can be met, and the application range is wide.

Description

Technical Field

[0001] This application relates to the field of camera equipment technology, and more particularly to a telescopic arm device for a camera. Background Technology

[0002] With the continuous progress of society and the continuous improvement of people's living standards, cameras are being used more and more widely in people's lives and production. Because cameras capture moving images, the camera position must be constantly adjusted according to the movement of the content being filmed. Mounting the camera on a specialized telescopic arm allows for height adjustment, but currently available telescopic arms are generally single-stage lifting structures. This results in a limited lifting height range, which cannot meet the needs of larger shooting heights, thus limiting the shooting scope. Summary of the Invention

[0003] In view of this, this application proposes a telescopic arm device for a camera.

[0004] According to one aspect of this application, a telescopic arm device for a camera is provided, comprising: a suspension assembly, a fixed arm, a primary lifting arm, and a secondary lifting arm; the suspension assembly includes: a base and a support plate arranged parallel to each other, and the base and the support plate are fixedly connected; the top end of the fixed arm is provided with an opening, and the bottom end of the fixed arm passes through the support plate and is fixedly connected to the base; the top end of the primary lifting arm is provided with an opening, and the bottom end of the primary lifting arm is inserted into the cavity of the fixed arm and can move within it along the length direction of the fixed arm; one end of the secondary lifting arm is inserted into the cavity of the primary lifting arm and can move within it along the length direction of the primary lifting arm; a first support buffer is provided inside the fixed arm, one end of the first support buffer is connected to the bottom inner wall of the fixed arm, and the other end of the first support buffer is fixedly connected to the outer wall of the primary lifting arm; a second support buffer is provided inside the primary lifting arm, one end of the second support buffer is connected to the primary lifting arm, and the other end of the second support buffer is fixedly connected to the secondary lifting arm.

[0005] In one possible implementation, the base is connected to the support plate via two or more connecting rods.

[0006] In one possible implementation, the base has two or more column legs on the side opposite to the support plate.

[0007] In one possible implementation, both the first and second support buffers are gas springs.

[0008] In one possible implementation, a first slider is provided on the inner side wall of the fixed arm, and a first slide rail is provided on the outer side wall of the first-stage lifting arm, with the first slide rail embedded in the first slider.

[0009] In a possible implementation, the inner side wall of the first lifting arm is provided with a second sliding block, and the outer side wall of the second lifting arm is provided with a second sliding rail, and the second sliding rail is embedded in the second sliding block.

[0010] In a possible implementation, the device further comprises a driving device, a first lifting part and a second lifting part.

[0011] The driving end of the driving device is in transmission connection with the first lifting part and the second lifting part, and is adapted to drive the first lifting arm and the second lifting arm to move through the first lifting part and the second lifting part respectively.

[0012] In a possible implementation, the driving device is arranged on the support plate.

[0013] In a possible implementation, the driving device is a hollow cup motor.

[0014] Beneficial effects: The suspension assembly, as the installation basis of the whole device, can install the fixed arm on a to-be-installed position such as a rail car, the fixed arm provides installation space for the first lifting arm, and the first lifting arm provides installation space for the second lifting arm. When the first lifting arm is extended out of the fixed arm, the first height increase of the camera can be realized, and when the second lifting arm is extended out of the first lifting arm, the second height increase of the camera can be realized. During operation, if the height of the camera needs to be adjusted, the first lifting arm and the second lifting arm can be extended out at the same time to increase the overall height of the camera. The application can realize the second lifting of the camera, the telescopic arm runs stably and reliably, the height changing stroke is large, can meet the needs of various shooting scenes, meet the needs of higher shooting positions, and has a wide range of applications.

[0015] Other features and aspects of the present application will become apparent from the following detailed description of the example embodiments, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate example embodiments, features, and aspects of the present application and serve to explain the principles of the present application.

[0017] Figure 1 A main structure diagram showing a fully extended state of the telescopic arm device for a camera according to an embodiment of the present application;

[0018] Figure 2 A sectional view showing the telescopic arm device for a camera according to an embodiment of the present application;

[0019] Figure 3 A sectional view showing the telescopic arm device for a camera according to an embodiment of the present application;

[0020] Figure 4 A sectional view showing the telescopic arm device for a camera according to an embodiment of the present application; Figure 2 A partially enlarged view of

[0021] Figure 5 A structural diagram showing the main body structure of the telescopic arm device for a camera in its fully retracted state according to an embodiment of this application;

[0022] Figure 6 Show Figure 5 Top view;

[0023] Figure 7 Show Figure 6 Section II;

[0024] Figure 8 Show Figure 6 HH cross-section diagram;

[0025] Figure 9 This diagram illustrates the main structural structure of the suspension assembly according to an embodiment of this application;

[0026] Figure 10 A top view of a belt tensioning device according to an embodiment of this application is shown;

[0027] Figure 11 A cross-sectional view of the fixed arm according to an embodiment of this application is shown;

[0028] Figure 12 This diagram shows the main structure of the primary lifting arm according to an embodiment of this application;

[0029] Figure 13 A cross-sectional view of the primary lifting arm according to an embodiment of this application is shown;

[0030] Figure 14 This diagram shows the main structure of the secondary lifting arm according to an embodiment of this application;

[0031] Figure 15 A cross-sectional view of a secondary lifting arm according to an embodiment of this application is shown. Detailed Implementation

[0032] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0033] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application or to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying 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 this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0036] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0037] Figure 1 This is a structural diagram showing the main body of the telescopic arm device for a camera in its fully extended state, according to an embodiment of this application. Figure 2 A cross-sectional view of a telescopic arm device for a camera according to an embodiment of this application is shown;

[0038] Figure 3 A cross-sectional view of a telescopic arm device for a camera according to an embodiment of this application is shown; Figure 4 Show Figure 2 A magnified view of a portion of the image. For example... Figure 1As shown, a telescopic arm device for a camera includes: a suspension assembly, a fixed arm 100, a primary lifting arm 200, and a secondary lifting arm 300; the suspension assembly includes: a base 410 and a support plate 400 arranged parallel to each other, and the base 410 and the support plate 400 are fixedly connected; the top end of the fixed arm 100 has an opening, and the bottom end of the fixed arm 100 passes through the support plate 400 and is fixedly connected to the base 410; the top end of the primary lifting arm 200 has an opening, and the bottom end of the primary lifting arm 200 is inserted into the cavity of the fixed arm 100 through the opening of the fixed arm 100. The primary lifting arm 200 has an internal structure and can move within the fixed arm 100 along its length. One end of the secondary lifting arm 300 is inserted into the cavity of the primary lifting arm 200 through the top opening of the primary lifting arm 200 and can move within the primary lifting arm 200 along its length. The other end of the secondary lifting arm 300 is suitable for mounting a camera. The fixed arm 100 has a first support buffer 120, one end of which is connected to the bottom inner wall of the fixed arm 100, and the other end of which is connected to the outer wall of the primary lifting arm 200. The primary lifting arm 200 has a second support buffer 230, and the primary lifting arm 200 is connected to the secondary lifting arm 300 through the second support buffer 230.

[0039] It should be noted that the suspension assembly serves as the mounting base for the overall device. The fixed arm 100 can be installed at the desired location, such as a railcar. The fixed arm 100 provides installation space for the primary lifting arm 200 and the secondary lifting arm 300. The primary lifting arm 200 provides installation space for the secondary lifting arm 300. Since the primary lifting arm 200 can move within the fixed arm 100, extending it beyond the fixed arm 100 allows for a primary increase in camera height. Similarly, since the secondary lifting arm 300 can move within the primary lifting arm 200, extending it beyond the primary lifting arm 200 allows for a secondary increase in camera height. During operation, if the camera height needs adjustment, both the primary and secondary lifting arms 200 and 300 can be extended simultaneously to increase the overall camera height. This application enables two-stage camera lifting, with stable and reliable telescopic arm operation, no image shake, a large height adjustment range, and can meet the needs of various shooting scenarios, thus broadening its application scope.

[0040] In one possible implementation, the base 410 is connected to the support plate 400 via two or more connecting rods 440. For example... Figure 9As shown, the main body of the base 410 is plate-shaped, and the main body of the support plate 400 is plate-shaped. The plane of the base 410 and the plane of the support plate 400 are parallel to each other. Multiple connecting rods 440 are provided between the base 410 and the support plate 400. Under the support of the multiple connecting rods 440, a stable connection between the base 410 and the support plate 400 can be achieved, and the uniformity of force on the base 410 and the support plate 400 can be effectively ensured. Furthermore, a first through hole 401 is provided in the middle of the support plate 400. The first through hole 401 matches the end face of the fixing arm 100. The fixing arm 100 can be inserted into the first through hole 401 and fixedly connected to the base 410 through the first through hole 401. It should be noted that the base 410 is suitable for connecting to the installation location to install the entire device on the installation location. The support plate 400 plays a certain role in stabilizing and limiting the fixed arm 100, preventing the fixed arm 100 from shaking during the movement of the entire device, which would reduce the connection strength and improve the installation stability of the fixed arm 100 on the base 410.

[0041] Furthermore, such as Figure 9 As shown, the main body of the base 410 is a rectangular plate structure. A second through hole protrudes from one side of the base plate, and the second through hole is aligned with the driving end of the driving device 500 to allow the transmission shaft 520 to pass through. The base 410 has multiple screw holes 402 arranged symmetrically front to back and left to right. The base 410 is fixed to the installation position by screw connection, allowing for both upright and inverted installation of the entire device. The main body of the support plate 400 is a rectangular plate structure, and a first through hole 401 is located in the middle of the support plate 400.

[0042] Preferably, there are four connecting rods 440, which are evenly arranged at the four corners of the top surface of the base 410 to improve the support stability of the support plate 400.

[0043] In one possible implementation, the base 410 has two or more columns 450 on the side opposite to the support plate 400. For example... Figure 9 As shown, the main body of the column leg 450 is cylindrical. One end of the column leg 450 is fixedly connected to the base 410, and the other end of the column leg 450 is provided with a pad 451, which can improve the support stability of the column leg 450.

[0044] Preferably, there are four column legs 450, which are evenly distributed at the four corners of the bottom surface of the base 410 to improve the support stability of the base 410.

[0045] In one possible implementation, such as Figure 11As shown, the main body of the fixed arm 100 has a cylindrical structure. One end of the fixed arm 100 is open, through which the primary lifting arm 200 is inserted into the cavity of the fixed arm 100. The other end of the fixed arm 100 is provided with a fixing plate 110, which matches the inner end face of the fixed arm 100. The fixing plate 110 is clamped at the bottom end of the fixed arm 100, and the fixed arm 100 and the fixing plate 110 are fixedly connected by screws. The end of the fixed arm 100 with the fixing plate 110 passes through the first through hole 401 and is fixedly connected to the base 410 by screws.

[0046] In one possible implementation, such as Figure 12 and Figure 13 As shown, the main body of the primary lifting arm 200 is cylindrical, and one end of the primary lifting arm 200 is open. The secondary lifting arm 300 is suitable for being inserted into the cavity of the primary lifting arm 200 through the opening. The other end of the primary lifting arm 200 is provided with a first lifting base plate 210. The main body of the first lifting base plate 210 matches the inner end face of the primary lifting arm 200. The first lifting base plate 210 is clamped at the bottom end of the primary lifting arm 200, and the primary lifting arm 200 and the first lifting base plate 210 are fixedly connected by screws.

[0047] In one possible implementation, such as Figure 11 As shown, a first slider 130 is provided on the side wall of the fixed arm 100, such as... Figure 12 As shown, a first slide rail 260 is provided on the outer wall of the primary lifting arm 200, and the first slide rail 260 is embedded in the first slider 130. Further, a slider hole is provided on the side wall of the fixed arm 100, and the first slider 130 is embedded in the slider hole and protrudes relative to the inner side wall of the fixed arm 100. A slide rail groove is provided on the side of the first slider 130 facing the primary lifting arm 200, such as... Figure 12 As shown, the first slide rail 260 has a cuboid structure. The length direction of the first slide rail 260 is parallel to the length direction of the first-stage lifting arm 200. The first slide rail 260 is fixedly connected to the side wall of the first-stage lifting arm 200 by multiple screws. The first slide rail 260 matches the slide rail groove of the first slider 130. The first slide rail 260 is always embedded in the slide rail groove of the first slider 130. When the first-stage lifting arm 200 moves up and down within the fixed arm 100, the first slide rail 260 moves within the slide rail groove of the first slider 130. Under the limiting action of the first slider 130 on the first slide rail 260, the movement direction of the first-stage lifting arm 200 is always consistent, avoiding collision between the first-stage lifting arm 200 and the inner surface of the fixed arm 100.

[0048] Furthermore, such as Figure 11As shown, two first sliders 130 are provided on the two opposite side walls of the fixed arm 100, and two first slide rails 260 are provided on the two opposite side walls of the first-stage lifting arm 200. The first slide rails 260 on both sides of the first-stage lifting arm 200 are respectively embedded in the first sliders 130 on both sides of the fixed arm 100, so that both sides of the first-stage lifting arm 200 are limited by the first sliders 130, further ensuring the activity stability of the first-stage lifting arm 200.

[0049] In one possible implementation, such as Figure 1 As shown, two first sliders 130 located on the same side are provided with first slider components 131. The first slider components 131 are disposed on the outer side wall of the fixed arm 100 and are fixedly connected to the two first sliders 130. Further, the main body of the first slider component 131 is a rectangular plate structure. One side of the first slider component 131 is fixedly connected to the two first sliders 130 by screws. The first slider component 131 is fixedly connected to the outer side wall of the fixed arm 100 by screws. The first slider component 131 serves as a connecting bridge between the fixed arm 100 and the first sliders 130, which can stably install the first sliders 130 on the fixed arm 100.

[0050] In one possible implementation, such as Figure 14 and Figure 15 As shown, the main body of the secondary lifting arm 300 is cylindrical with open ends and an internal cavity. One end of the secondary lifting arm 300 is provided with a second lifting base plate 310, which matches the inner end face of the secondary lifting arm 300 and is embedded in the bottom port of the secondary lifting arm 300. The other end of the secondary lifting arm 300 is provided with a top cover 330, which matches the top opening of the secondary lifting arm 300 and is embedded in the top opening of the secondary lifting arm 300. The second lifting base plate 310 and the top cover 330 are both fixedly connected to the side wall of the secondary lifting arm 300 by screws.

[0051] In one possible implementation, such as Figure 5 As shown, the top cover 330 has multiple screw holes 332, which can be used to install dovetail groove slides that match the camera, for fixing various cameras commonly used on the market.

[0052] Furthermore, such as Figure 15 As shown, a first reinforcement member 311 is connected between the second lifting base plate 310 and the inner wall of the secondary lifting arm 300; a second reinforcement member 331 is connected between the top cover 330 and the inner wall of the secondary lifting arm 300, thereby improving the connection strength between the second lifting base plate 310, the top cover 330, and the secondary lifting arm 300.

[0053] In one possible implementation, such as Figure 12As shown, a second slider 240 is provided on the side wall of the primary lifting arm 200, as... Figure 14 As shown, a second slide rail 340 is provided on the outer wall of the secondary lifting arm 300, and the second slide rail 340 is embedded in the second slider 240. Further, a slider hole is provided on the side wall of the primary lifting arm 200, and the second slider 240 is embedded in the slider hole and protrudes relative to the inner side wall of the primary lifting arm 200. A slide rail groove is provided on the side of the second slider 240 facing the secondary lifting arm 300. The second slide rail 340 has a strip-shaped plate structure and is fixedly connected to the side wall of the secondary lifting arm 300 by multiple screws. The second slide rail 340 matches the slide rail groove of the second slider 240, and the second slide rail 340 is embedded in the slide rail groove of the second slider 240. When the secondary lifting arm 300 moves up and down within the primary lifting arm 200, the limiting action of the second slider 240 on the second slide rail 340 ensures that the direction of movement of the secondary lifting arm 300 remains consistent.

[0054] Furthermore, such as Figure 13 As shown, four second sliders 240 are provided on each of the two opposite side walls of the primary lifting arm 200, and the four second sliders 240 are arranged in two rows, as shown. Figure 14 As shown, two second slide rails 340 are provided on the two opposite side walls of the secondary lifting arm 300; the two second slide rails 340 on both sides of the secondary lifting arm 300 are respectively embedded in the two rows of second sliders 240 on both sides of the primary lifting arm 200, so that both sides of the secondary lifting arm 300 are limited by the second sliders 240, further ensuring the activity stability of the secondary lifting arm 300.

[0055] In one possible implementation, each column of two second sliders 240 is provided with a second slider component 241. The second slider component 241 is disposed on the outer wall of the primary lifting arm 200 and fixedly connected to the two second sliders 240. Further, as... Figure 12 As shown, the main body of the second slider component 241 is a rectangular plate structure. One side of the second slider component 241 is fixedly connected to the two second sliders 240 by screws. The second slider component 241 is fixedly connected to the outer wall of the first-stage lifting arm 200 by screws. The second slider component 241 serves as a connecting bridge between the first-stage lifting arm 200 and the second sliders 240, which can securely install the second sliders 240 on the first-stage lifting arm 200.

[0056] In one possible implementation, it further includes: a drive device 500, a primary lifting unit and a secondary lifting unit; the drive end of the drive device 500 is connected to the primary lifting unit and the secondary lifting unit for transmission; it is suitable for driving the primary lifting arm 200 to move through the primary lifting unit and driving the secondary lifting arm 300 to move through the secondary lifting unit.

[0057] In one possible implementation, such as Figure 2 As shown, the first-stage lifting unit includes: a first lead screw 600; the first lead screw 600 passes through the fixed plate 110 at the bottom of the fixed arm 100 and is threadedly connected to the first lifting base plate 210 at the bottom of the first-stage lifting arm 200; it is suitable for driving the first-stage lifting arm 200 to generate linear motion through the first lifting base plate 210 when the first lead screw 600 rotates.

[0058] Furthermore, such as Figure 4 As shown, the first-stage lifting unit also includes: a first nut 610; a first lead screw 600 is threadedly connected to the first lifting base plate 210 through the first nut 610; a placement hole is provided in the middle position of the first lifting base plate 210, the first nut 610 is horizontally fixed in the placement hole, the first lead screw 600 passes through the screw hole of the first nut 610 and is threadedly connected to the first nut 610, when the first lead screw 600 rotates, under the limiting action of the first slide rail 260 and the first slider 130 on the first-stage lifting arm 200, the first-stage lifting arm 200 as a whole generates an upward or downward linear displacement along the axial direction of the first lead screw 600.

[0059] Furthermore, the first-stage lifting unit also includes: a first bearing 620; the first lead screw 600 is rotatably connected to the fixed plate 110 via the first bearing 620, and the first bearing 620 is designed to allow the first lead screw 600 to rotate smoothly and reduce the coefficient of friction between the first lead screw 600 and the fixed plate 110.

[0060] In one possible implementation, such as Figure 2 and Figure 3 As shown, the fixed plate 110 is provided with multiple first mechanical anti-collision components 111. The top of each first mechanical anti-collision component 111 is provided with a soft rubber material layer, which can perform mechanical limiting of the system and prevent rigid impact between the first-stage lifting arm 200 and the fixed plate 110 during the movement. Furthermore, there are four first mechanical anti-collision components 111 in total.

[0061] In one possible implementation, such as Figure 2As shown, the secondary lifting unit includes: a spline slide rod 700, a second lead screw 800, and a connecting part; the first lead screw 600 and the spline slide rod 700 are arranged adjacent to each other and parallel to each other in the length direction. The spline slide rod 700 passes through the fixed plate 110 at the bottom of the fixed arm 100 and the first lifting base plate 210 at the bottom of the primary lifting arm 200 in sequence; the second lead screw 800 is vertically arranged inside the cavity of the primary lifting arm 200, and the second lead screw 800 is threadedly connected to the second lifting base plate 310 at the bottom of the secondary lifting arm 300. The spline slide rod 700 is connected to the second lead screw 800 through the connecting part. The spline slide rod 700 is suitable for driving the second lead screw 800 to rotate through the connecting part, so that when the second lead screw 800 rotates, it drives the secondary lifting arm 300 to generate linear motion through the second lifting base plate 310.

[0062] Furthermore, the main body of the second lead screw 800 is tubular with openings at both ends and a hollow cavity inside to accommodate the first lead screw 600; the outer wall of the second lead screw 800 is threaded.

[0063] In one possible implementation, such as Figure 2 As shown, the secondary lifting unit includes: a second nut 810; a second lead screw 800 is threadedly connected to the second lifting base plate 310 through the second nut 810; the second lifting base plate 310 also has a placement hole in the middle position, the second nut 810 is horizontally fixed in the placement hole, the second lead screw 800 passes through the screw hole of the second nut 810 and is threadedly connected to the second nut 810. When the second lead screw 800 rotates, under the limiting action of the second slide rail 340 and the second slider 240 on the secondary lifting arm 300, the secondary lifting arm 300 as a whole will generate an upward or downward linear displacement along the axial direction of the second lead screw 800.

[0064] In one possible implementation, such as Figure 4As shown, the connecting part includes: a spline nut 710, a first synchronous pulley 750, a first synchronous belt 730, and a second synchronous pulley 740; the inner ring of the spline nut 710 is sleeved on the spline slide rod 700, and the outer ring of the spline nut 710 is fixedly connected to the first lifting base plate 210; the top of the inner ring of the spline nut 710 is rigidly connected to the first synchronous pulley 750, and the center hole of the first synchronous pulley 750 is coaxially arranged with the inner ring of the spline nut 710 to facilitate the passage of the spline slide rod 700; the second synchronous pulley 740... A second lead screw 800 is mounted and fixedly connected to a first synchronous belt 730, which is fitted with a first synchronous pulley 750 and a second synchronous pulley 740. When the spline slide rod 700 rotates, the inner ring of the spline nut 710 rotates synchronously, driving the first synchronous pulley 750 to rotate synchronously. The first synchronous pulley 750 drives the second synchronous pulley 740 to rotate via the first synchronous belt 730, and the second synchronous pulley 740 drives the second lead screw 800 to rotate, thereby providing rotational torque to the second lead screw 800. (The spline nut 710 is a standard part and is part of the existing technology. The spline nut 710 itself has a bearing, and its characteristic is that the whole can move along the axial direction of the spline slide rod 700 while its inner ring can rotate along its own axis, thereby synchronously driving the first synchronous pulley 750 fixedly connected to its inner ring to rotate.)

[0065] In one possible implementation, such as Figure 4 As shown, the secondary lifting unit also includes a second bearing 720. The spline slide rod 700 is rotatably connected to the fixed plate 110 through the second bearing 720. The second bearing 720 is designed to improve the smoothness of the rotation of the spline slide rod 700 and reduce the coefficient of friction between the spline slide rod 700 and the fixed plate 110.

[0066] In one possible implementation, such as Figure 2 and Figure 4 As shown, the secondary lifting unit also includes: a transition plate 220, two or more support rods 270, and a third bearing 630; the transition plate 220 and the two or more support rods 270 are all installed inside the cavity of the primary lifting arm 200, the plane of the transition plate 220 is parallel to the plane of the first lifting base plate 210, and the bottom surface of the transition plate 220 is fixedly connected to the first lifting base plate 210 through the two or more support rods 270, forming a rigid connection; a third through hole is opened in the middle of the transition plate 220 to make way for the second lead screw 800, and the second lead screw 800 passes through the third through hole; as Figure 4As shown, the third bearing 630 is disposed within the third through hole and located between the adapter plate 220 and the second lead screw 800. The inner ring of the third bearing 630 is fixedly connected to the second lead screw 800, and the bearing seat 631 of the third bearing 630 is fixedly connected to the adapter plate 220. It should be noted that the third bearing 630 serves as a connecting bridge between the second lead screw 800 and the adapter plate 220. The adapter plate 220 can support and install the second lead screw 800 through the third bearing 630, ensuring the stability of the second lead screw 800 within the first-stage lifting arm 200, preventing the second lead screw 800 from tilting, and improving the smoothness of rotation of the second lead screw 800 under the action of the third bearing 630.

[0067] like Figure 2 As shown, the adapter plate 220 has a fourth through hole 222 to make way for the spline slide rod 700; during the retrieval process, the spline slide rod 700 passes through the fourth through hole 222.

[0068] Furthermore, the main body of the adapter plate 220 has a quadrilateral plate structure, and four support rods 270 are provided. The four support rods 270 are evenly distributed at the four bottom corners of the adapter plate 220 to improve the support stability of the adapter plate 220.

[0069] In one possible implementation, the adapter plate 220 is provided with a second mechanical anti-collision component 221. The top of the second mechanical anti-collision component 221 is provided with a soft material layer, which can perform mechanical limiting of the system and prevent the secondary lifting arm 300 from rigidly colliding with the adapter plate 220 during the movement.

[0070] In one possible implementation, a first support buffer 120 is provided inside the fixed arm 100. One end of the first support buffer 120 is connected to the inner bottom wall of the fixed arm 100, and the other end is connected to the outer side wall of the primary lifting arm 200. Further, the first support buffer 120 is a gas spring; for example... Figure 4 As shown, one end of the first support buffer 120 is connected to the fixed plate 110 via the first gas spring connector 122, as... Figure 12 As shown, a second gas spring connector 121 is provided at the top corner of the outer wall of the first-stage lifting arm 200, and the other end of the first support buffer 120 is connected to the second gas spring connector 121.

[0071] Furthermore, there are four first support buffers 120, which are located at the four corners of the outer wall of the first-stage lifting arm 200 to improve the uniformity of force distribution.

[0072] In one possible implementation, a second support buffer 230 is provided within the primary lifting arm 200. One end of the second support buffer 230 is connected to the primary lifting arm 200, and the other end is fixedly connected to the secondary lifting arm 300. Further, the second support buffer 230 is a gas spring. Figure 4 As shown, a third gas spring connector 231 is provided on the adapter plate 220 inside the first-stage lifting arm 200, and one end of the second support buffer 230 is connected to the adapter plate 220 through the third gas spring connector 231; Figure 2 As shown, the top cover 330 of the secondary lifting arm 300 is provided with a fourth gas spring connector 320, and the second support buffer 230 passes through the second lifting base plate 310 and is connected to the fourth gas spring connector 320.

[0073] Furthermore, there are four second support buffers 230, which are evenly distributed at the top four corners of the adapter plate 220 to improve the uniformity of force on the secondary lifting arm 300.

[0074] It should be noted here that the gas spring is used to balance the weight from the secondary lifting arm 300 and the pan-tilt unit and camera connected to it, and can also eliminate the movement gap between the slide rail and the slider.

[0075] Furthermore, the first support buffer 120 uses a gas spring with a model number of YQ150-800MM; the second support buffer 230 uses a gas spring with a model number of YQ150-700MM.

[0076] In one possible implementation, the drive unit 500 is mounted on the support plate 400; the drive unit 500 is a coreless motor.

[0077] In one possible implementation, it further includes: a transmission assembly; the drive end of the drive device 500 is connected to the first lead screw 600 of the first-stage lifting unit and the spline slide bar 700 of the second-stage lifting unit via the transmission assembly.

[0078] Furthermore, the transmission assembly includes: a drive shaft 520, a coupling 510, a third synchronous pulley 530, a fourth synchronous pulley 540, a fifth synchronous pulley 550, a sixth synchronous pulley 560, a second synchronous belt 570, and a third synchronous belt 580; such as Figure 9As shown, the output shaft of the drive device 500 (hollow cup motor) is connected to the transmission shaft 520 via a coupling 510. The transmission shaft 520 passes through the base 410 and is coaxially and fixedly connected to the third synchronous pulley 530. The fourth synchronous pulley 540 and the fifth synchronous pulley 550 are both fitted onto the bottom end of the first lead screw 600 and are both fixedly connected to the first lead screw 600. The sixth synchronous pulley 560 is fitted onto the bottom end of the spline slide bar 700 and is fixedly connected to the spline slide bar 700. The internal teeth of the second synchronous belt 570 match the teeth of the third synchronous pulley 530 and the fourth synchronous pulley 540. The second synchronous belt 570 is fitted onto the third synchronous pulley 530 and the fourth synchronous pulley 540. The third synchronous belt 5... The internal teeth of the 80 mesh match the teeth of the fifth synchronous pulley 550 and the sixth synchronous pulley 560. The third synchronous belt 580 is fitted onto the fifth synchronous pulley 550 and the sixth synchronous pulley 560. When the drive device 500 (hollow cup motor) starts working, its output shaft drives the transmission shaft 520 and the third synchronous pulley 530 to rotate. Under the transmission action of the second synchronous belt 570 and the third synchronous belt 580, the third synchronous pulley 530 synchronously drives the fourth synchronous pulley 540, the first lead screw 600, the fifth synchronous pulley 550, the sixth synchronous pulley 560, and the spline slide rod 700 to rotate. This enables the drive device 500 to drive the first lead screw 600 and the spline slide rod 700 to rotate.

[0079] In one possible implementation, such as Figure 9 As shown, the transmission assembly also includes two belt tensioning devices 590, which are disposed at the bottom of the base 410. These two belt tensioning devices 590 are used to adjust the tension of the second synchronous belt 570 and the third synchronous belt 580. Further, as... Figure 10As shown, each belt tensioning device 590 includes: a tensioning shell 591, two springs 596, two tensioning rods 592, a triangular plate 593, and a tensioning wheel 594. The bottom of the tensioning shell 591 is fixedly connected to the base 410. The two tensioning rods 592 are arranged parallel to each other and pass through the tensioning shell 591. The two springs 596 are arranged inside the cavity of the tensioning shell 591 and each spring 592 is fitted with a nut 595. One end of the spring 596 abuts against the nut 595, and the other end of the spring 596 abuts against the inner wall of the tensioning shell 591. One end of each of the two tensioning rods 592 is connected to the triangular plate 593, and the other end of each of the two tensioning rods 592 protrudes with a limiting part. The apex of the triangular plate 593 is provided with a tensioning wheel 594, and the tensioning wheel 594 can rotate to avoid interfering with the movement of the second synchronous belt 570 and the third synchronous belt 580. The tensioning rod 592 outputs pressure to the tensioning wheel 594 through the spring 596, so that the tensioning wheel 594 of the two belt tensioning devices 590 continuously presses the second synchronous belt 570 and the third synchronous belt 580, thereby giving the second synchronous belt 570 and the third synchronous belt 580 a certain tension force to prevent the second synchronous belt 570 and the third synchronous belt 580 from skipping teeth or slipping.

[0080] In one possible implementation, such as Figure 1 As shown, the suspension assembly also includes a dust cover 430; the base 410 is provided with a dust cover 430 on the side away from the support plate 400. The main body of the dust cover 430 is a shell structure with an opening at one end. The opening end of the dust cover 430 is fastened to the bottom surface of the base 410, and the dust cover 430 completely covers the bottom surface of the base 410; thereby preventing the transmission components inside the dust cover 430 from being interfered with by dust or foreign objects; and ensuring the working stability of the transmission components.

[0081] In one possible implementation, such as Figure 1 As shown, the suspension assembly also includes two or more triangular support frames 420. The two or more triangular support frames 420 are located between the support plate 400 and the base 410, and one side of the triangular support frame 420 is fixedly connected to the support plate 400. The adjacent side of the triangular support frame 420 is fixedly connected to the outer wall of the fixed arm 100. Under the reinforcement of multiple triangular support frames 420, the connection strength between the fixed arm 100 and the suspension assembly is further improved.

[0082] In one possible implementation, a position sensor 150 is provided on the side wall of the fixed arm 100; two trigger elements 250 are provided on one outer surface of the primary lifting arm 200, such as... Figure 12As shown, two triggers 250 are respectively installed at the upper and lower ends of the fixed arm 100. The specific height of the two triggers 250 can be determined according to the actual needs of the customer to meet different requirements. It should be noted that when the first-stage lifting arm 200 is rising, the trigger 250 at the lower position triggers the position sensor 150, indicating that the first-stage lifting arm 200 has risen to the highest (limit) position, at which point the drive device 500 stops moving; when the first-stage lifting arm 200 is falling, the trigger 250 at the upper position triggers the position sensor 150, indicating that the first-stage lifting arm 200 has fallen to the lowest (limit) position, at which point the drive device 500 stops driving, providing a safety guarantee for system operation.

[0083] Furthermore, such as Figure 12 As shown, multiple trigger mounting holes are provided on the outer wall of the primary lifting arm 200. The multiple trigger mounting holes are arranged sequentially along the length of the primary lifting arm 200. The trigger 250 can be inserted into the trigger mounting holes at different heights according to different needs to adjust the height of the upper and lower limit positions.

[0084] Preferably, the position sensor 150 is a magnetic switch; the two triggers 250 are magnets.

[0085] In one possible implementation, such as Figure 1 As shown, the fixed arm 100 is equipped with a transport limit pin 140, and the primary lifting arm 200 has a limit hole 280. The transport limit pin 140 matches the limit hole 280, and can be inserted into the limit hole 280 to lock the primary lifting arm 200. It should be noted that during the handling and transportation of the entire equipment, the fixed arm 100 and the primary lifting arm 200 need to be locked to ensure that the entire system is in a mechanically locked state at the zero position during transportation. When the equipment is started, the transport limit pin 140 can be removed.

[0086] In one possible implementation, handle components 160 for transport are provided on opposite sides of the fixed arm 100. Further, as... Figure 5 As shown, the handle component 160 includes: a handle bar 161 and two oppositely arranged handle pieces 162; the handle pieces 162 are fixedly connected to the outer wall of the fixed arm 100 by bolts, and the handle bar 161 is fixedly arranged between the two handle pieces 162. The two handle components 160 effectively improve the convenience of transporting and installing the overall equipment.

[0087] In one possible implementation, the height of the fixed boom 100: the height of the first-stage lifting boom 200: the height of the second-stage lifting boom 300 = 47:55:60.

[0088] To ensure the structural strength of the equipment, aluminum alloy is the preferred material for the fixed arm 100, the first-stage lifting arm 200, and the second-stage lifting arm 300.

[0089] Preferably, the ratio of the height of the adapter plate 220 within the primary lifting arm 200 to the overall height of the primary lifting arm 200 is 1:4.

[0090] Preferably, the inner diameter of the second lead screw 800 is 1 mm larger than the outer diameter of the first lead screw 600.

[0091] In one possible implementation, such as Figure 4 As shown, the third synchronous pulley 530 has 30 teeth; the fourth synchronous pulley 540 and the fifth synchronous pulley 550 both have 60 teeth; the sixth synchronous pulley 560 has 30 teeth; the transmission ratio of the connecting shaft 520, the first lead screw 600, and the spline lead screw 700 is 1:2:1.

[0092] In summary, this application features two-stage lifting capability, high structural rigidity, stable and reliable telescopic arm operation, and no shaking defects in the captured images; the use of gas springs for buffering reduces the load on the hollow cup motor, eliminates gaps during operation, ensures no shaking in the captured images, and guarantees stable and reliable operation; the drive unit 500 and transmission components all use silent parts, resulting in low noise during the operation of the entire system and reducing the noise impact on the shooting scene.

[0093] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A telescopic arm device for a camera, characterized in that, include: Suspension assembly, fixed boom, primary lifting boom and secondary lifting boom; The suspension assembly includes a base and a support plate arranged parallel to each other, and the base and the support plate are fixedly connected. One end of the fixed arm is provided with an opening, and the other end of the fixed arm passes through the support plate and is fixedly connected to the base; The bottom end of the first-stage lifting arm is inserted into the cavity of the fixed arm through the opening of the fixed arm and can move inside the fixed arm along its length. One end of the secondary lifting arm is inserted into the cavity of the primary lifting arm through the top opening of the primary lifting arm and can move inside the primary lifting arm along its length. The other end of the secondary lifting arm is suitable for placing a camera. The fixed arm is provided with a first support buffer, and the bottom inner wall of the fixed arm is connected to the outer wall of the first-stage lifting arm through the first support buffer. The first-stage lifting arm is provided with a second support buffer, and the first-stage lifting arm is connected to the second-stage lifting arm through the second support buffer.

2. The telescopic arm device for a camera according to claim 1, characterized in that, The base is connected to the support plate by two or more connecting rods.

3. The telescopic arm device for a camera according to claim 1, characterized in that, The base has two or more column legs on the side opposite to the support plate.

4. The telescopic arm device for a camera according to claim 1, characterized in that, Both the first and second support buffers are gas springs.

5. The telescopic arm device for a camera according to claim 1, characterized in that, The inner wall of the fixed arm is provided with a first slider, and the outer wall of the first-stage lifting arm is provided with a first slide rail, which is embedded in the first slider.

6. The telescopic arm device for a camera according to claim 5, characterized in that, The inner wall of the first-stage lifting arm is provided with a second slider, and the outer wall of the second-stage lifting arm is provided with a second slide rail, which is embedded in the second slider.

7. The telescopic arm device for a camera according to claim 1, characterized in that, Also includes: Drive unit, primary lifting unit and secondary lifting unit; The drive end of the drive device is connected to the primary lifting unit and the secondary lifting unit for transmission, and is suitable for driving the primary lifting arm and the secondary lifting arm to move through the primary lifting unit and the secondary lifting unit respectively.

8. The telescopic arm device for a camera according to claim 7, characterized in that, The drive device is mounted on the support plate.

9. The telescopic arm device for a camera according to claim 8, characterized in that, The drive device is a coreless motor.

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