A focusing device and a pan-tilt

Abstract

The utility model discloses a kind of follow focus device, including main circuit board, rotating wheel and encoder, encoder is electrically connected by wire with main circuit board, encoder includes encoding ring body and rotating shaft, encoding ring body is arranged at the outer periphery of one end of rotating shaft, rotating shaft rotates relative to encoding ring body;The other end of rotating shaft is fixedly connected with rotating wheel;The encoding ring body of encoder is set on fixed seat, the rotating shaft of encoder passes through fixed seat and is fixedly connected with rotating wheel;One end of fixed seat is rotatably connected with rotating wheel.Compared with prior art, the application creates simple structure, only an electric encoder is connected with rotating wheel, i.e. adjusting follow focus and focusing function can be realized.Encoding ring body is set on the outer periphery of rotating shaft, and the distance from rotating shaft is close, solve the problem of low sensitivity of magnetic encoder in prior art.Meanwhile by connecting encoder and rotating shaft directly, the space occupied by follow focus wheel device is smaller, and the volume of follow focus wheel device is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gimbal technology, and in particular to a focusing device and a gimbal. Background Technology

[0002] Focusing is the process of achieving a sharp image of a subject by changing the focal point. This is typically done by adjusting the distance between the lens and the film. A focus wheel generally consists of a main body and a rotating shaft. The main body has a recessed groove, within which the rotating shaft is housed. One end of the shaft is connected to the main body, and the other end has a ring magnet. The main body is mounted on a gimbal containing a circuit board. A magnetic encoder is located on the side of the circuit board near the ring magnet. When the main body rotates, the rotating shaft and the ring magnet rotate accordingly. The position of the ring magnet changes with the rotation of the shaft. The magnetic encoder senses this change and sends a corresponding signal, which is transmitted through the circuit board to the shooting device to adjust or focus. For example, patent CN215729040U discloses a rotating shaft comprising an outer rotating shaft and an inner rotating shaft fixedly connected by threads. The outer ring of the outer rotating shaft is rotatably connected to the inner ring of the first shaft hole via a bearing. The inner ring of the outer rotating shaft has an internal thread, which engages with the external thread of the outer ring of the inner rotating shaft for fixed connection. The bearing engages with the outer ring of the inner rotating shaft to achieve rotatable connection between the inner rotating shaft and the first shaft hole. One end of the inner rotating shaft extends into the interior of the outer rotating shaft, and the other end is fixedly connected to a dial wheel. The annular magnet is fixedly connected to the end of the outer rotating shaft near the PCBA board by means of tight fit, adhesive, or snap-fit. This focusing wheel structure is relatively complex, and the sensitivity is poor due to the magnetic encoder sensing the position change of the annular magnet.

[0003] Therefore, a focusing device and a gimbal are needed to solve the above problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A focusing device includes a main circuit board, a rotating wheel, and an encoder. The encoder is electrically connected to the main circuit board. The encoder includes an encoder ring and a rotating shaft. The encoder ring is disposed on the outer periphery of one end of the rotating shaft, and the rotating shaft rotates relative to the encoder ring. The other end of the rotating shaft is fixedly connected to the rotating wheel. The encoder ring is disposed at one end of a fixed base, and the rotating shaft of the encoder passes through the fixed base and is fixedly connected to the rotating wheel. The other end of the fixed base is rotatably connected to the rotating wheel.

[0006] Preferably, the rotating wheel includes a first annular portion and a second annular portion, the first annular portion and the second annular portion are concentrically arranged, one end of the rotating shaft is disposed in the first annular portion, and the end of the fixed seat that is rotatably connected to the rotating wheel is disposed in the second annular portion.

[0007] Preferably, the encoder's encoder ring is mounted on a fixed base, which has a hollow through hole through which the encoder's rotating shaft passes and is fixedly connected to the rotating wheel.

[0008] Preferably, one end of the fixed base is connected to the rotating wheel via a bearing; the rotating wheel rotates relative to the fixed base.

[0009] Preferably, the encoder is an electric encoder.

[0010] Preferably, the main circuit board is a PCBA board.

[0011] Preferably, a rotating cover is fixedly connected to the outer circumference of the rotating wheel. The rotating wheel is driven to rotate by adjusting the rotating cover, and the rotation of the rotating wheel drives the rotating shaft to rotate.

[0012] Preferably, the focusing device also includes a housing; the housing contains a main circuit board and an encoder.

[0013] A gimbal for supporting shooting equipment includes a motor and a bracket, and also includes the aforementioned focus wheel device. The bracket is connected to the motor, and the focus wheel device is mounted on the bracket. A main circuit board is mounted inside the bracket, and the motor is electrically connected to the main circuit board.

[0014] Specifically, the mounting base of the focus wheel assembly is fixedly connected to the bracket.

[0015] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0016] Compared with the prior art, the present invention has a simple structure, requiring only an electric encoder connected to a rotating wheel to achieve the functions of adjusting focus and adjusting focus.

[0017] The encoder is positioned on the outer periphery of the rotating shaft, close to it, thus solving the problem of low sensing sensitivity in existing magnetic encoders. This invention features a encoder with high sensing sensitivity, and by directly connecting the encoder to the rotating shaft, it occupies less space in the focusing wheel assembly, reducing its overall size. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the focusing device of this utility model;

[0020] Figure 2 This is another schematic diagram of the focusing device of this utility model;

[0021] Figure 3 This is a schematic diagram of the gimbal of this utility model.

[0022] Explanation of main component symbols: 10. Coke wheel device; 1. Rotating wheel; 2. Bearing; 3. Encoder; 4. Wire; 5. Main circuit board; 31. Encoder ring; 32. Rotating shaft; 6. Housing; 7. Fixing base; 8. Bracket; 11. First annular part; 12. Second annular part; 13. Rotating cover.

[0023] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present invention. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of the present invention are used to distinguish different objects and not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are used. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] Please see Figure 1-3This utility model embodiment provides a focusing wheel device 10, including a main circuit board 5, a rotating wheel 1, and an encoder 3. The encoder 3 is electrically connected to the main circuit board 5 via a wire 4. The encoder 3 includes an encoding ring 31 and a rotating shaft 32. The encoding ring 31 is disposed on the outer periphery of one end of the rotating shaft 32, and the rotating shaft 32 rotates relative to the encoding ring 31. The other end of the rotating shaft 32 is fixedly connected to the rotating wheel 1. The encoding ring 31 of the encoder 3 is disposed at one end of a fixed base 7, and the rotating shaft 32 of the encoder 3 passes through the fixed base 7 and is fixedly connected to the rotating wheel 1. The other end of the fixed base 7 is rotatably connected to the rotating wheel 11.

[0027] In one embodiment of the present invention, the rotating wheel 1 includes a first annular portion 11 and a second annular portion 12, the first annular portion 11 and the second annular portion 12 are concentrically arranged, and one end of the rotating shaft 32 is disposed in the first annular portion 11, and the end of the fixed seat 7 that is rotatably connected to the rotating wheel 1 is disposed in the second annular portion 12.

[0028] In one embodiment of this utility model, the encoder ring 31 of the encoder 3 is disposed on the fixed base 7, the fixed base 7 has a hollow through hole, and the rotating shaft 32 of the encoder 3 passes through the hollow through hole and is fixedly connected to the rotating wheel 1.

[0029] In one embodiment of this utility model, one end of the fixed base 7 is connected to the rotating wheel 1 via a bearing 2; the rotating wheel 1 rotates relative to the fixed base 7, and the bearing 2 is provided between the fixed base 7 and the rotating wheel 1, which improves the stability of the rotation when the rotating wheel 1 rotates circumferentially. Furthermore, the rotational feel is more pronounced during the rotation process, enhancing the overall rotational experience.

[0030] In one embodiment of this utility model, encoder 3 is an electric encoder.

[0031] By configuring encoder 3 as an electric encoder, the encoder ring 31 of encoder 3 directly senses the position change of rotating shaft 32 and converts the position change information into an electronic signal, which is transmitted to main circuit board 5. Main circuit board 5 then transmits this electronic signal to the shooting device to achieve focus tracking and adjustment control of the shooting device. Encoder 3 is located on the outer periphery of rotating shaft 32, close to rotating shaft 32, which solves the problem of low sensing sensitivity of magnetic encoders in the prior art. At the same time, by directly connecting encoder 3 to rotating shaft 32, it occupies less space in the focus wheel device, reducing the size of the focus wheel device.

[0032] Compared with the prior art, the present invention has a simple structure, requiring only an electric encoder connected to a rotating wheel to achieve the functions of adjusting focus and adjusting focus.

[0033] In one embodiment of the present invention, the focusing device further includes a housing 6; a main circuit board 5 and an encoder 3 are disposed inside the housing 6.

[0034] In one embodiment of this utility model, the main circuit board 5 is a PCBA board.

[0035] In one embodiment of this utility model, a rotating cover 13 is fixedly connected to the outer periphery of the rotating wheel 1. The rotating cover 13 is adjusted to drive the rotating wheel 1 to rotate. The rotation of the rotating wheel 1 drives the rotating shaft 32 to rotate. The encoder 3 detects the position change of the rotating shaft 31 and transmits the position change information to the main circuit board 5. The main circuit board 5 transmits the position change information to the shooting device, thereby controlling the focusing and adjustment of the shooting device.

[0036] A gimbal for supporting shooting equipment includes a motor and a bracket 8, and also includes the aforementioned focus wheel device 10. The bracket 8 is connected to the motor, and the focus wheel device is mounted on the bracket 8. A main circuit board 5 is disposed inside the bracket 8, and the motor is electrically connected to the main circuit board 5.

[0037] Specifically, the mounting base 7 of the focus wheel device is fixedly connected to the bracket 8.

[0038] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A focusing device, characterized in that: The encoder (3) includes a main circuit board (5), a rotating wheel (1), and an encoder (3). The encoder (3) is electrically connected to the main circuit board (5). The encoder (3) includes an encoder ring (31) and a rotating shaft (32). The encoder ring (31) is located on the outer periphery of one end of the rotating shaft (32), and the rotating shaft (32) rotates relative to the encoder ring (31). The other end of the rotating shaft (32) is fixedly connected to the rotating wheel (1). The encoder ring (31) of the encoder (3) is located at one end of a fixed base (7). The rotating shaft (32) of the encoder (3) passes through the fixed base (7) and is fixedly connected to the rotating wheel (1). The other end of the fixed base (7) is rotatably connected to the rotating wheel (1).

2. The focusing device as described in claim 1, characterized in that: The rotating wheel (1) includes a first annular portion (11) and a second annular portion (12). The first annular portion (11) and the second annular portion (12) are concentrically arranged, and one end of the rotating shaft (32) is located in the first annular portion (11). The fixed seat (7) is rotatably connected to the rotating wheel (1) and one end is located in the second annular portion (12).

3. The focusing device as described in claim 2, characterized in that: The mounting base (7) has a hollow through hole through which the rotating shaft (32) of the encoder (3) passes and is fixedly connected to the rotating wheel (1).

4. The focusing device as described in claim 3, characterized in that: One end of the fixed seat (7) is connected to the rotating wheel (1) via a bearing (2); the rotating wheel (1) rotates relative to the fixed seat (7).

5. The focusing device as described in claim 1, characterized in that: The encoder (3) is an electric encoder (3).

6. The focusing device as described in claim 5, characterized in that: A rotating cover (13) is fixedly connected to the outer periphery of the rotating wheel (1). The rotating wheel (1) is driven to rotate by adjusting the rotating cover (13), and the rotating wheel (1) rotates to drive the rotating shaft (32) to rotate.

7. A gimbal, characterized in that, The device is used to support the shooting equipment, including a motor and a bracket (8), and also includes a focus follower as described in any one of claims 1 to 6, wherein the bracket (8) is connected to the motor, and a focus follower wheel device (10) is disposed on the bracket (8); a main circuit board (5) is disposed inside the bracket (8), and the motor is electrically connected to the main circuit board (5).

8. The gimbal as described in claim 7, characterized in that, The mounting base (7) of the focus wheel device (10) is fixedly connected to the bracket (8).

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