Low-torque pan-tilt camera device

Abstract

The utility model provides a low-torque pan-tilt camera device which comprises a support, a spherical groove corresponding to a spherical assembly is arranged on the support, the spherical assembly is located on the inner side of the spherical groove, a plurality of tooth grooves are formed in the outer side wall of the spherical assembly, and a plurality of clamping grooves are formed between the tooth grooves and the outer side wall of the spherical assembly. An arc-shaped rack for driving the spherical assembly to rotate is formed; a gear is fixedly arranged at the power output end of the motor, and the gear is meshed with the arc-shaped rack; the camera lens is located on the inner side of the spherical assembly. The utility model has the beneficial effects that the transmission ratio is small, that is, the output rotating speed is high, the torque is small, the shaking of the pan-tilt camera lens in the rotating process is avoided, and the transmission mechanism is suitable for high-speed and small-torque transmission application scenes.

Description

Technical Field

[0001] The utility model belongs to the field of camera equipment, in particular to a low-torque pan-tilt camera device. Background Art

[0002] The gear structure design of the PTZ camera lens in the field of smart home or smart security is a comprehensive technical challenge, which involves the stability of the mechanical structure, precision control, the selection of transmission ratios, and the ability to adapt to different environments and requirements. These design points together ensure that the PTZ camera lens can provide high-quality shooting effects in a variety of complex environments.

[0003] The prior art has the following disadvantages:

[0004] Torque limitation: The large gear of a conventional pan / tilt camera lens drives the small gear, which will increase 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.

[0005] Accelerated wear: The contact area between the large and small gears of conventional PTZ camera lenses is small, which may lead to more concentrated pressure distribution under high load, thus accelerating the wear of the gears and shortening the service life of the gears;

[0006] 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.

[0007] 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 mean more materials are needed, increasing manufacturing costs;

[0008] 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;

[0009] Thermal effect: Conventional PTZ cameras generate a lot of heat due to friction at the contact point between the large gear and the small gear, which may cause the system to overheat, affect efficiency and may require additional heat dissipation measures;

[0010] Reverse drive limitation: In some emergency scenarios, the small gear of a conventional PTZ 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;

[0011] 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 requirements for assembly accuracy are required. Any offset or misalignment may lead to uneven load distribution, increased wear or cause failure. Utility Model Content

[0012] In view of this, the present invention aims to provide a low-torque pan-tilt camera device, in order to solve at least one of the above-mentioned technical problems.

[0013] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0014] A low-torque pan-tilt camera device, comprising:

[0015] 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;

[0016] 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;

[0017] 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;

[0018] A camera lens is located inside the spherical component.

[0019] Furthermore, the spherical assembly includes a hemispherical shell and an annular shell, and a plurality of snap rings are fixedly provided on one end of the annular shell adjacent to the hemispherical shell;

[0020] The inner side wall of the hemispherical shell is fixedly provided with a plurality of buckles corresponding to the buckle ring, and the buckles are located inside the buckle ring;

[0021] The camera lens is embedded in the inner side of the annular shell.

[0022] Furthermore, a protective shell is fixedly disposed on the outer side of the bracket, a fixing ring matching the spherical component is fixedly disposed on the protective shell, and a side wall of the fixing ring is a curved surface corresponding to the spherical component;

[0023] The outer wall of the spherical component is fitted with the inner wall of the fixing ring, and the diameter of the fixing ring away from the spherical component is smaller than the diameter of the spherical component.

[0024] Furthermore, a rotation shaft is fixedly provided on the outer side wall of the hemispherical shell, and two rotation shafts are provided and are respectively located on two sides of the hemispherical shell;

[0025] The annular housing is provided with an arc-shaped groove corresponding to the rotary shaft, and the rotary shaft is located inside the arc-shaped groove and fits with the inner wall of the arc-shaped groove;

[0026] The bracket is provided with a rotation hole corresponding to the rotation axis, and the rotation axis is located inside the rotation hole.

[0027] Furthermore, a silicone pad is fixedly provided on the outer shell of the motor, and the silicone pad is in contact with the inner wall of the protective shell.

[0028] Furthermore, a base is fixedly provided at one end of the bracket away from the spherical component, and electric wires are arranged in the base, and the motor and the camera lens are respectively connected to the external circuit through the electric wires.

[0029] Furthermore, a connecting frame is fixedly provided on the end surface of the base away from the bracket, and the connecting frame includes a connecting rod and a connecting plate, one end of the connecting rod is hinged to the base, and the other end is hinged to the connecting plate;

[0030] The connecting plate is provided with a connecting hole, in which a screw is arranged, and the connecting plate is fixed to the position to be installed by the screw.

[0031] Furthermore, the connecting rod and the connecting plate are both provided with a plurality of limit blocks at the hinged part, and the connecting rod and the base are both provided with a plurality of limit blocks at the hinged part, and the limit blocks are structural parts made of silicone material;

[0032] The plurality of limit blocks on the same plane are distributed equidistantly along the circumference, and the tops of the plurality of limit blocks on two adjacent planes are pressed against each other.

[0033] Furthermore, the arc-shaped rack is arranged along the moving direction of the camera lens, and the arc-shaped rack is located in the middle position of the outer side wall of the spherical component.

[0034] Compared with the prior art, the low-torque pan-tilt camera device described in the utility model has the following beneficial effects:

[0035] By driving the large gear with a small gear, a smaller output torque and a larger contact area can be obtained, so that the pressure is evenly distributed under high load, the wear of the gear is reduced, and the service life of the gear is prolonged. In addition, vibration and noise are reduced, making the pan-tilt camera lens rotate more stably, which is suitable for application scenarios that do not require large torque but require quick response.

[0036] The transmission ratio is relatively small, that is, the output speed is fast and the torque is small, which can avoid the shaking of the pan / tilt camera lens during rotation and is suitable for high-speed and low-torque transmission application scenarios;

[0037] The gear structure design is added to the structural components of the pan-tilt camera lens, which reduces the physical space required for the entire device and helps to achieve the miniaturization design of the equipment;

[0038] Using a pinion 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;

[0039] 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

[0040] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0041] Figure 1 This is a schematic diagram of the overall structure of the low-torque pan-tilt camera device according to an embodiment of the utility model;

[0042] Figure 2 This is a schematic diagram of the internal structure of the low-torque pan-tilt camera device according to an embodiment of the utility model;

[0043] Figure 3 It is a schematic diagram of the structure of the gear and spherical component part according to the embodiment of the utility model;

[0044] Figure 4 It is a partial structural schematic diagram of the connecting plate and connecting rod according to an embodiment of the utility model.

[0045] Description of reference numerals:

[0046] 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. Limiting block; 505. Connecting hole; 506. Cable trough. DETAILED DESCRIPTION

[0047] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0048] In the description of the present utility model, 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 positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0050] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0051] A low-torque pan-tilt camera device comprises: a bracket (1), the bracket (1) being provided with a spherical groove corresponding to a spherical component (2), the spherical component (2) being located inside the spherical groove;

[0052] 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);

[0053] 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;

[0054] A camera lens (4), wherein the camera lens (4) is located inside the spherical component (2).

[0055] 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.

[0056] The spherical component (2) comprises a hemispherical shell (202) and an annular shell (203); a plurality of snap rings are fixedly provided at 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 on the inner side of the buckles; and the camera lens (4) is embedded in the inner side of the annular shell (203).

[0057] A protective shell (101) is fixedly arranged on the outside of the bracket (1), and a fixing ring (102) matching the spherical component (2) is fixedly arranged 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) fits 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).

[0058] 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 two 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 around the axis of the rotating shaft (204).

[0059] A silicone pad is fixedly arranged on the outer shell of the motor (3), and the silicone pad is in contact with the inner wall of the protective shell (101), thereby providing a shock-absorbing effect for the motor (3) and reducing noise.

[0060] A base (5) is fixedly provided at one end of the bracket (1) away from the spherical component (2), and an electric wire (501) is provided inside the base (5). The motor (3) and the camera lens (4) are respectively connected to an external circuit via the electric wire (501).

[0061] 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). The connecting plate (503) is provided with a wire arrangement groove (506) corresponding to the wire (501); the connecting plate (503) is provided with a connecting hole (505), 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.

[0062] The connecting rod (502) and the connecting plate (503) are both provided with a plurality of limit blocks (504) at the hinged part, and the connecting rod (502) and the base (5) are both provided with a plurality of limit blocks (504) at the hinged part, 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.

[0063] The silicone structure 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, thereby achieving the function of adjusting the rotation angle.

[0064] 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).

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model 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 replace some or all of the technical features therein with equivalents. 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 utility model, and they should all be included in the scope of the claims and specification of the utility model.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-torque pan-tilt camera device, characterized in that: include: 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, characterized in that: The spherical component (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 ring, and the buckles are located inside the buckle ring; The camera lens (4) is embedded inside the annular housing (203).

3. The low-torque pan-tilt camera device according to claim 1, characterized in that: A protective shell (101) is fixedly arranged on the outside of the bracket (1), a fixing ring (102) matching the spherical component (2) is fixedly arranged 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 wall of the spherical component (2) fits with the inner wall of the fixing ring (102), and the diameter of the end of the fixing ring (102) away from the spherical component (2) is smaller than the diameter of the spherical component (2).

4. The low-torque pan-tilt camera device according to claim 2, characterized in that: A rotating shaft (204) is fixedly provided on the outer side wall of the hemispherical shell (202), and two rotating shafts (204) are provided and are respectively located on two 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 closely 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, characterized in that: 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, characterized in that: A base (5) is fixedly provided at one end of the bracket (1) away from the spherical component (2), and an electric wire (501) is provided inside the base (5). 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, characterized in that: 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 the connecting plate (503) is provided with a cable groove corresponding to the wires (501); The connecting plate (503) is provided with a connecting hole (505), a screw is arranged in the connecting hole (505), and the connecting plate (503) is fixed to the position to be installed by the screw.

8. The low-torque pan-tilt camera device according to claim 7, characterized in that: The connecting rod (502) and the connecting plate (503) are both provided with a plurality of limit blocks (504) at the hinged part, and the connecting rod (502) and the base (5) are both provided with a plurality of limit blocks (504) at the hinged part, 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.

9. The low-torque pan-tilt camera device according to claim 1, characterized in that: 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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