Low-torque gimbal camera device

Abstract

A low-torque gimbal camera device, comprising: a bracket, a spherical assembly and an electric motor, wherein the bracket is provided with a spherical recess corresponding to the spherical assembly; the outer side wall of the spherical assembly is provided with a plurality of tooth slots, an arc-shaped rack configured to drive the spherical assembly to rotate being formed between the plurality of tooth slots and the outer side wall of the spherical assembly; a gear is fixedly provided at a power output end of the electric motor, the gear being meshed with the arc-shaped rack; and a camera lens is provided inside the spherical assembly. In an operating state, the electric motor drives the gear to rotate to drive the arc-shaped rack to rotate, thereby driving the camera lens to rotate.

Description

A low-torque pan-tilt camera device

[0001] This disclosure claims priority to the Chinese patent application filed with the China Patent Office on February 6, 2024, with application number 202420286391.7 and invention name “A low-torque pan-tilt camera device,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0002] The present disclosure belongs to the field of camera equipment, and in particular relates to a low-torque pan-tilt camera device. Background Art

[0003] The gear design of pan-tilt camera lenses for smart home or smart security applications presents a comprehensive technical challenge, involving mechanical stability, precise control, gear ratio selection, and adaptability to diverse environments and requirements. These key design considerations ensure high-quality capture in diverse and complex environments.

[0004] The prior art has the following shortcomings:

[0005] Torque limitation: The large gear of a conventional pan / tilt camera lens drives the small gear, which increases the output torque. In addition, the size and material strength of the small gear will limit the maximum torque that can be transmitted. Exceeding a certain limit may cause gear damage or failure.

[0006] Accelerated wear: The contact area between the large and small gears of conventional pan-tilt camera lenses is small, which may lead to more concentrated pressure distribution under high load, thereby accelerating gear wear and shortening the gear life;

[0007] Vibration and noise issues: Conventional pan-tilt camera lenses have fewer contact points between large and small gears. This configuration may produce more vibration and noise, especially at high speeds.

[0008] Increased manufacturing costs: Conventional pan-tilt camera lens large gears require higher manufacturing precision to ensure effective torque transmission, which means higher processing costs. At the same time, larger gears also require more materials, increasing manufacturing costs;

[0009] Space occupation: The large gear of a conventional pan-tilt camera lens is larger and heavier than the small gear, requiring more installation space, which may become a disadvantage in some compact designs;

[0010] Thermal effects: Conventional PTZ cameras generate a lot of heat due to friction at the contact point between the large and small gears, which may cause the system to overheat, affecting efficiency and requiring additional cooling measures;

[0011] Reverse drive limitations: In some emergency scenarios, the small gear of a conventional gimbal camera lens may have difficulty pushing the large gear to rotate in the opposite direction, especially when there is a large back pressure or static load;

[0012] Higher requirements for assembly accuracy: The large and small gear meshing structure of conventional pan-tilt camera lenses is designed on one side of the product. When the large gear and the small gear are matched, higher assembly accuracy requirements are required. Any offset or misalignment may lead to uneven load distribution, increased wear or cause failure.

[0013] Utility Model Content

[0014] In view of this, the present disclosure aims to propose a low-torque pan-tilt camera device in order to solve at least one of the above-mentioned technical problems.

[0015] To achieve the above objectives, the technical solution of the present disclosure is implemented as follows:

[0016] A low-torque pan-tilt camera device, comprising:

[0017] A bracket, wherein the bracket is provided with a spherical groove corresponding to the spherical component, and the spherical component is located inside the spherical groove;

[0018] A spherical component, wherein a plurality of tooth grooves are formed on the outer side wall of the spherical component, and an arc-shaped rack for driving the spherical component to rotate is formed between the plurality of tooth grooves and the outer side wall of the spherical component;

[0019] A motor, wherein a gear is fixedly provided at a power output end of the motor, and the gear is meshed with an arc-shaped rack;

[0020] A camera lens is located inside the spherical component.

[0021] Compared with the prior art, the low-torque pan-tilt camera device disclosed in the present invention has the following beneficial effects:

[0022] By driving the large gear with a small gear, a smaller output torque can be obtained, and a larger contact area can be obtained, so that the pressure is evenly distributed under high loads, which reduces gear wear and prolongs the gear life. It also reduces vibration and noise, making the pan-tilt camera lens rotation more stable. It is suitable for application scenarios that do not require high torque but require fast response.

[0023] The transmission ratio is relatively small, that is, the output speed is fast and the torque is small, which avoids shaking during the rotation of the pan-tilt camera lens and is suitable for high-speed and low-torque transmission application scenarios;

[0024] The addition of a gear structure to the pan-tilt camera lens structure reduces the physical space required for the entire device, contributing to the miniaturization of the device.

[0025] Using a small gear to drive a gear has a relatively larger contact surface area between the gears, which helps to dissipate heat and thus may reduce efficiency loss caused by overheating;

[0026] In some application scenarios, the configuration of a small gear driving a large gear can provide better reverse driving capability, allowing the device to quickly reverse direction and avoid shaking during the rotation of the gimbal camera lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which constitute part of this disclosure, are used to provide a further understanding of the disclosure. The exemplary embodiments of the disclosure and their descriptions are used to explain the disclosure and do not constitute an improper limitation of the disclosure. In the accompanying drawings:

[0028] FIG1 is a schematic diagram of the overall structure of a low-torque pan-tilt camera device according to an embodiment of the present disclosure;

[0029] FIG2 is a schematic diagram of the internal structure of a low-torque pan-tilt camera device according to an embodiment of the present disclosure;

[0030] FIG3 is a schematic diagram of the structure of the gear and the spherical component according to an embodiment of the present disclosure;

[0031] FIG4 is a schematic diagram of the structure of the connecting plate and the connecting rod according to an embodiment of the present disclosure.

[0032] Explanation of the accompanying drawings: 1. Bracket; 101. Protective shell; 102. Fixing ring; 2. Spherical component; 201. Tooth groove; 202. Hemispherical shell; 203. Ring shell; 204. Rotating shaft; 3. Motor; 301. Gear; 4. Camera lens; 5. Base; 501. Wire; 502. Connecting rod; 503. Connecting plate; 504. Limit block; 505. Connecting hole; 506. Cable trough. DETAILED DESCRIPTION

[0033] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0034] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present disclosure, unless otherwise specified, "multiple" means two or more.

[0035] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0036] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0037] A low-torque pan-tilt camera device comprises: a bracket (1), wherein the bracket (1) is provided with a spherical groove corresponding to a spherical component (2), and the spherical component (2) is located inside the spherical groove;

[0038] A spherical component (2), wherein a plurality of tooth grooves (201) are formed on the outer wall of the spherical component (2), and an arc-shaped rack configured to drive the spherical component (2) to rotate is formed between the plurality of tooth grooves (201) and the outer wall of the spherical component (2);

[0039] A motor (3), wherein a gear (301) is fixedly provided at a power output end of the motor (3), and the gear (301) is meshed with an arc-shaped rack;

[0040] A camera lens (4), wherein the camera lens (4) is located inside the spherical component (2).

[0041] The gear (301) rotates under the drive of the motor (3), thereby driving the arc-shaped rack to move, thereby achieving the function of driving the spherical component (2) to rotate.

[0042] The spherical assembly (2) comprises a hemispherical shell (202) and an annular shell (203); a plurality of snap rings are fixedly provided on one end of the annular shell (203) adjacent to the hemispherical shell (202); a plurality of buckles corresponding to the buckles are fixedly provided on the inner side wall of the hemispherical shell (202); the buckles are located inside the buckles; and the camera lens (4) is embedded inside the annular shell (203).

[0043] A protective shell (101) is fixedly provided on the outside of the bracket (1), and a fixing ring (102) matching the spherical component (2) is fixedly provided on the protective shell (101), and the side wall of the fixing ring (102) is an arc surface corresponding to the spherical component (2); the outer side wall of the spherical component (2) is in contact with the inner side wall of the fixing ring (102), and the diameter of the fixing ring (102) at one end away from the spherical component (2) is smaller than the diameter of the spherical component (2).

[0044] A rotating shaft (204) is fixedly provided on the outer wall of the hemispherical shell (202), and two rotating shafts (204) are provided and are respectively located on both sides of the hemispherical shell (202); an arc groove corresponding to the rotating shaft (204) is opened on the annular shell (203), and the rotating shaft (204) is located on the inner side of the arc groove and fits with the inner wall of the arc groove; a rotating hole corresponding to the rotating shaft (204) is opened on the bracket (1), and the rotating shaft (204) is located on the inner side of the rotating hole; the spherical component (2) rotates axially with the axis of the rotating shaft (204) as the center.

[0045] A silicone pad is fixedly provided on the outer shell of the motor (3), and the silicone pad is in contact with the inner wall of the protective shell (101), providing a shock-absorbing effect for the motor (3) and reducing noise.

[0046] A base (5) is fixedly provided at one end of the bracket (1) away from the spherical component (2), wherein an electric wire (501) is provided in the base (5), and the motor (3) and the camera lens (4) are respectively connected to an external circuit via the electric wire (501).

[0047] A connecting frame is fixedly provided on the end surface of the base (5) away from the bracket (1), and the connecting frame includes a connecting rod (502) and a connecting plate (503). One end of the connecting rod (502) is hinged to the base (5), and the other end is hinged to the connecting plate (503); a connecting hole (505) is opened on the connecting plate (503), and a screw is provided in the connecting hole (505). The connecting plate (503) is fixed to the position to be installed by the screw.

[0048] The connecting rod (502) and the connecting plate (503) are both provided with a plurality of limit blocks (504) at the hinged portion, and the connecting rod (502) and the base (5) are both provided with a plurality of limit blocks (504) at the hinged portion, and the limit blocks (504) are structural parts made of silicone material; the plurality of limit blocks (504) located on the same plane are distributed equidistantly along the circumference, and the tops of the plurality of limit blocks (504) on two adjacent planes are pressed against each other.

[0049] The silicone structural member ensures that the state of the device is variable and stable. When the position of the device needs to be adjusted, the connecting rod (502) is rotated. At this time, the limit block (504) is deformed under the action of pressure. Because the limit block (504) is made of silicone, the deformation amount is large, which realizes the function of adjusting the rotation angle.

[0050] The arc-shaped rack is arranged along the moving direction of the camera lens (4), and is located in the middle of the outer side wall of the spherical component (2).

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present disclosure, and they should all be included in the scope of the claims and description of the present disclosure.

[0052] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A low-torque pan-tilt camera device, comprising: A bracket (1), wherein the bracket (1) is provided with a spherical groove corresponding to the spherical component (2), and the spherical component (2) is located inside the spherical groove; A spherical component (2), wherein a plurality of tooth grooves (201) are formed on the outer wall of the spherical component (2), and an arc-shaped rack for driving the spherical component (2) to rotate is formed between the plurality of tooth grooves (201) and the outer wall of the spherical component (2); A motor (3), wherein a gear (301) is fixedly provided at a power output end of the motor (3), and the gear (301) is meshed with an arc-shaped rack; A camera lens (4), wherein the camera lens (4) is located inside the spherical component (2).

2. A low-torque pan-tilt camera device according to claim 1, wherein: The spherical assembly (2) comprises a hemispherical shell (202) and an annular shell (203), and a plurality of snap rings are fixedly provided on one end of the annular shell (203) adjacent to the hemispherical shell (202); The inner side wall of the hemispherical shell (202) is fixedly provided with a plurality of buckles corresponding to the buckle, and the buckles are located inside the buckle; The camera lens (4) is embedded inside the annular housing (203).

3. A low-torque pan-tilt camera device according to claim 1, wherein: A protective shell (101) is fixedly provided on the outside of the bracket (1), a fixing ring (102) matching the spherical component (2) is fixedly provided on the protective shell (101), and a side wall of the fixing ring (102) is a curved surface corresponding to the spherical component (2); The outer side wall of the spherical component (2) fits in contact with the inner side wall of the fixing ring (102), and the diameter of the fixing ring (102) at one end away from the spherical component (2) is smaller than the diameter of the spherical component (2).

4. A low-torque pan-tilt camera device according to claim 2, wherein: A rotation shaft (204) is fixedly provided on the outer side wall of the hemispherical shell (202), and two rotation shafts (204) are provided and are respectively located on both sides of the hemispherical shell (202); The annular housing (203) is provided with an arc-shaped groove corresponding to the rotary shaft (204), and the rotary shaft (204) is located inside the arc-shaped groove and fits in with the inner wall of the arc-shaped groove; The bracket (1) is provided with a rotation hole corresponding to the rotation shaft (204), and the rotation shaft (204) is located inside the rotation hole.

5. The low-torque pan-tilt camera device according to claim 3, wherein: A silicone pad is fixedly provided on the outer shell of the motor (3), and the silicone pad is in contact with the inner wall of the protective shell (101).

6. The low-torque pan-tilt camera device according to claim 1, wherein: A base (5) is fixedly provided at one end of the bracket (1) away from the spherical component (2), wherein an electric wire (501) is provided in the base (5), and the motor (3) and the camera lens (4) are respectively connected to an external circuit via the electric wire (501).

7. A low-torque pan-tilt camera device according to claim 6, wherein: A connecting frame is fixedly provided on the end surface of the base (5) away from the bracket (1), the connecting frame comprising a connecting rod (502) and a connecting plate (503), one end of the connecting rod (502) is hinged to the base (5), and the other end is hinged to the connecting plate (503), and a cable groove corresponding to the wires (501) is provided on the connecting plate (503); The connecting plate (503) is provided with a connecting hole (505), a screw is provided in the connecting hole (505), and the connecting plate (503) is fixed to the position to be installed by the screw.

8. A low-torque pan-tilt camera device according to claim 7, wherein: The connecting rod (502) and the connecting plate (503) are both provided with a plurality of limit blocks (504) at the hinged portion, and the connecting rod (502) and the base (5) are both provided with a plurality of limit blocks (504) at the hinged portion, wherein the limit blocks (504) are structural members made of silicone material; The plurality of limit blocks (504) located on the same plane are distributed equidistantly along the circumference, and the tops of the plurality of limit blocks (504) on two adjacent planes are pressed against each other.

9. The low-torque pan-tilt camera device according to claim 1, wherein: The arc-shaped rack is arranged along the moving direction of the camera lens (4), and is located in the middle of the outer side wall of the spherical component (2).

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