pan-tilt camera

Abstract

The utility model relates to video monitoring technical field provides a cloud platform camera, and bearing shell is connected with base, and can rotate relative to base, camera body and bearing shell fixed connection, drive assembly fixedly established in bearing shell and base in any one, drive shaft of drive assembly and bearing shell and base in another connection, to drive bearing shell relative to base rotation, the inner wall of base and bearing shell one's is interval and is equipped with first support rib and second support rib along the height direction of itself, and the support groove for providing axial support is formed between first support rib and second support rib, and the inner wall of base and bearing shell another is equipped with limiting part, utilize the sliding engagement between support groove and limiting part, realize the rotation guide and axial location of bearing shell. Set up like this, not only has simplified the overall structure of cloud platform equipment, has reduced the production cost and assembly difficulty of cloud platform equipment, and moreover has promoted the rotation stability of cloud platform equipment.

Description

Technical Field

[0001] This utility model relates to the field of video surveillance technology, and in particular to a PTZ camera. Background Technology

[0002] Video surveillance is a common real-time monitoring technology used in key departments and important locations across various industries, and PTZ cameras are one of the core front-end devices widely used in the video surveillance field. A PTZ camera typically consists of a rotatable camera body and a fixed base, achieving wide-area monitoring coverage through the horizontal or vertical rotation of the camera body.

[0003] In existing PTZ camera designs, to ensure the camera can rotate smoothly and stably relative to the base, a precision metal bearing (such as a ball bearing) is typically installed between the camera's mounting housing and the base. However, metal bearings are expensive and require strict assembly precision, increasing the overall manufacturing cost of the PTZ camera. Utility Model Content

[0004] This utility model provides a pan-tilt camera to solve the above-mentioned technical defects in the prior art. It not only simplifies the overall structure of the pan-tilt device and reduces the production cost and assembly difficulty of the pan-tilt device, but also improves the rotational stability of the pan-tilt device.

[0005] This utility model provides a pan-tilt camera, including: Base; A supporting housing is connected to the base and can rotate relative to the base; The camera body is fixedly connected to the supporting housing; A drive assembly is fixedly mounted on either the support housing or the base. The drive assembly has a drive shaft connected to the other of the support housing and the base to drive the support housing to rotate relative to the base. The inner wall of one of the base and the bearing housing is provided with a first support rib and a second support rib at intervals along its own height direction, and a support groove for providing axial support is formed between the first support rib and the second support rib. The inner wall of the other of the base and the bearing housing is provided with a limiting component. During the rotation of the bearing housing relative to the base, the sliding engagement between the support groove and the limiting component is used to guide the rotation and limit the axial movement of the bearing housing.

[0006] According to the pan-tilt camera provided by this utility model, the limiting component includes a first limiting rib and a second limiting rib that are spaced apart along the height direction of the base or the bearing housing, and a limiting groove is formed between the first limiting rib and the second limiting rib. During the rotation of the bearing housing relative to the base, the first support rib is slidably accommodated in the limiting groove, and the second limiting rib is slidably accommodated in the support groove.

[0007] According to the PTZ camera provided by this utility model, the second limiting rib has a first limiting surface, a second limiting surface and a guide slope. The guide slope is located between the first limiting surface and the second limiting surface, and extends obliquely from the location of the second limiting surface toward the first limiting surface. The cross-sectional diameter of the second support rib is larger than that of the first support rib, so that the second limiting rib passes over the first support rib and enters the support groove during assembly, and is blocked by the second support rib after assembly.

[0008] According to the pan-tilt camera provided by this utility model, the first support rib and the second support rib form a set of support rib modules, and the support rib modules are provided in at least three sets, and the at least three sets of support rib modules are arranged in an array along the circumferential direction of the base or the bearing shell.

[0009] According to the PTZ camera provided by this utility model, when six sets of the support rib modules are provided, every two sets of the support rib modules form a support point on the inner wall of the base or the bearing housing.

[0010] According to the pan-tilt camera provided by this utility model, multiple limiting components are spaced apart along the circumferential direction of the base or the bearing housing, and a deformation groove is formed between any two adjacent limiting components. The width of the deformation groove is less than the arc length on the virtual circle where the support groove formed between each group of first support ribs and second support ribs is located.

[0011] According to the pan-tilt camera provided by this utility model, a lubricating medium is pre-placed in the support groove.

[0012] According to the pan-tilt camera provided by this utility model, the supporting housing has a mounting cavity, the driving component is embedded in the mounting cavity, the driving component has a driving shaft, and the driving shaft is fixedly connected to the base; The cable of the drive component is wound around the side wall of the mounting cavity and electrically connected to the camera body.

[0013] According to the pan-tilt camera provided by this utility model, the base is provided with a mounting part, the mounting part is provided with a shaft hole, and the drive shaft is inserted into the shaft hole.

[0014] According to the pan-tilt camera provided by this utility model, the carrier housing is also provided with a cable fixing buckle, and the cable of the drive component is fixed to the cable fixing buckle.

[0015] The pan-tilt camera provided by this utility model features a first support rib and a second support rib spaced apart along their height on the inner wall of one of the base and the supporting housing. A support groove for providing axial support is formed between the first and second support ribs. A limiting component is provided on the inner wall of the other of the base and the supporting housing. During the rotation of the supporting housing relative to the base, the sliding engagement between the support groove and the limiting component guides and limits the rotation of the supporting housing, completely replacing the expensive metal bearings in traditional solutions. This design not only simplifies the overall structure of the pan-tilt device, reducing production costs and assembly difficulty, but also improves the rotational stability of the pan-tilt device.

[0016] Compared to the direct contact between the base and the inner wall of the supporting housing, the contact surface is a complete cylindrical surface. During the manufacturing process, any minute dimensional deviation or surface unevenness will cause the supporting housing to wobble, become eccentric, or tilt when rotating. This instability will be directly reflected in the captured image, causing image shake. In this embodiment of the invention, the supporting groove essentially acts as a guide rail, and the limiting component is like a slider. This movement of a point or line within the track has far greater guiding and stability than direct friction between surfaces. It can effectively constrain the axial and radial movement of the supporting housing, ensuring that it can only rotate smoothly along the preset trajectory, thereby improving the stability of the PTZ camera and the stability of the image.

[0017] Furthermore, direct contact with the inner wall implies a large contact area, resulting in significant friction. This not only requires the drive motor to provide greater torque (increasing power consumption), but also makes it more prone to sticking and slipping effects during startup or low-speed rotation, leading to jerky and uneven rotation. This embodiment of the invention transforms the large-area surface contact into a small-area line or point contact between the limiting component and the supporting groove, making the rotation of the supporting housing smoother, faster, and more responsive. It also reduces the performance requirements of the drive motor, contributing to energy conservation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a front view of the PTZ camera provided in this embodiment of the utility model.

[0020] Figure 2This is an exploded view of the pan-tilt camera provided in this embodiment of the utility model.

[0021] Figure 3 This is a cross-sectional view of the pan-tilt camera provided in this embodiment of the utility model.

[0022] Figure 4 This is a schematic diagram of the base of the PTZ camera provided in this embodiment of the utility model.

[0023] Figure label: 10. Base; 11. First support rib; 12. Second support rib; 13. Support groove; 14. Mounting part; 15. Shaft hole; 20. Bearing housing; 21. First limiting rib; 22. Second limiting rib; 221. First limiting surface; 222. Second limiting surface; 223. Guide slope; 23. Limiting groove; 24. Deformation groove; 25. Mounting cavity; 26. Cable fixing buckle; 30. Camera body; 40. Drive assembly; 41. Drive shaft. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0026] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0028] Figure 1 This is a front view of the PTZ camera provided in this embodiment of the utility model. Figure 2 This is an exploded view of the pan-tilt camera provided in this embodiment of the utility model. Figure 3 This is a cross-sectional view of the pan-tilt camera provided in this embodiment of the utility model. Figure 4 This is a schematic diagram of the base of the PTZ camera provided in this embodiment of the utility model.

[0029] See Figures 1 to 4 This utility model provides a PTZ camera, which includes a base 10, a support housing 20, a camera body 30, and a drive assembly 40.

[0030] The base 10 is typically a fixed base. The support housing 20 is a key component connecting the moving part (camera body 30) and the stationary part (base 10). The support housing 20 supports and protects the camera body 30, and the support housing 20 can rotate horizontally relative to the base 10.

[0031] The camera body 30 has a housing and internal components such as a camera and circuit board. The housing is fixed to the support housing 20, allowing the camera body 30 and the support housing 20 to rotate horizontally as a whole. A drive assembly 40 is fixed to either the support housing 20 or the base 10. The drive assembly 40 has a drive shaft 41, which is inserted into the other of the support housing 20 and the base 10 to drive the support housing 20 to rotate relative to the base 10. The drive assembly 40 can be a stepper motor, etc., and its drive shaft 41 is connected to the driven base 10 or the support housing 20, providing power for the rotation of the support housing 20.

[0032] In this design, the inner wall of one of the base 10 and the supporting housing 20 is provided with a first support rib 11 and a second support rib 12 spaced apart and parallel along its height direction. That is, the first support rib 11 and the second support rib 12 can be provided on the inner wall of either the base 10 or the supporting housing 20. A support groove 13 for providing axial support is formed between the first support rib 11 and the second support rib 12. The inner wall of the other of the base 10 and the supporting housing 20 is provided with a limiting component, that is, the limiting component can be correspondingly provided on either the base 10 or the supporting housing 20.

[0033] Taking the inner wall of the base 10 as an example, those skilled in the art can understand that two annular raised ribs, namely the first support rib 11 and the second support rib 12, are integrally formed on the cylindrical inner wall of the base 10 along its height direction (axial direction). An annular support groove 13 is naturally formed between the two spaced-apart raised ribs, and the support groove 13 is used to provide axial support.

[0034] The limiting component is an external protrusion structure that mates with the support groove 13. Taking the aforementioned support groove 13 on the inner wall of the base 10 as an example, the limiting component is one or more protrusions on the outer wall of the bearing housing 20. Those skilled in the art will understand that the simplest form of this limiting component is an annular rib, the axial width of which is less than or equal to the width of the support groove 13, and its outer diameter matches the inner diameter of the support groove 13.

[0035] During the rotation of the bearing housing 20 relative to the base 10, the sliding engagement between the support groove 13 and the limiting component enables rotational guidance and axial limiting of the bearing housing 20. That is, by designing mutually cooperating rib and groove structures on the base 10 and the bearing housing 20 in an integrated manner, traditional rolling bearings (such as ball bearings) or sliding bearings that require separate installation are replaced, thereby simplifying the structure, reducing costs, and facilitating assembly.

[0036] Specifically, this embodiment of the invention achieves radial limiting through the tight fit between the outer cylindrical surface of the limiting component and the inner cylindrical surface of the supporting groove 13, ensuring that the bearing housing 20 can only rotate around a fixed central axis, thus playing a guiding role similar to the outer and inner rings of a bearing and preventing radial sway. Axial limiting is achieved by the limiting component being clamped in the axial (vertical) direction by the two side walls of the supporting groove 13, namely the first supporting rib 11 and the second supporting rib 12. This prevents the bearing housing 20 from detaching from the base 10 due to gravity or external force, achieving the axial locking function of a traditional bearing.

[0037] It should be noted that those skilled in the art can choose materials with low coefficient of friction to manufacture the base 10 and the bearing housing 20, such as self-lubricating engineering plastics like polyoxymethylene, nylon, or graphite.

[0038] It is understood that the pan-tilt camera provided in this embodiment of the present invention features a first support rib 11 and a second support rib 12 spaced apart along their height on the inner wall of one of the base 10 and the supporting housing 20, with a support groove 13 formed between the first support rib 11 and the second support rib 12 to provide axial support. The inner wall of the other of the base 10 and the supporting housing 20 is provided with a limiting component. During the rotation of the supporting housing 20 relative to the base 10, the sliding engagement between the support groove 13 and the limiting component achieves rotational guidance and axial limiting of the supporting housing 20, completely replacing the expensive metal bearings in traditional solutions. This design not only simplifies the overall structure of the pan-tilt device, reduces the production cost and assembly difficulty, but also improves the rotational stability of the pan-tilt device.

[0039] Compared to the direct contact between the base 10 and the inner wall of the supporting housing 20, the contact surface is a complete cylindrical surface. During the manufacturing process, any slight dimensional deviation or surface unevenness will cause the supporting housing 20 to wobble, become eccentric, or tilt when rotating. This instability will be directly reflected in the captured image, causing image shake. In this embodiment of the invention, the supporting groove 13 essentially acts as a guide rail, and the limiting component is like a slider. This movement of a point or line within the track has far greater guiding and stability than direct friction between surfaces. It can effectively constrain the axial and radial movement of the supporting housing 20, ensuring that it can only rotate smoothly along a preset trajectory, thereby improving the stability of the PTZ camera and the stability of the image.

[0040] Furthermore, direct contact with the inner wall implies a large contact area, resulting in significant friction. This not only requires the drive motor to provide greater torque (increasing power consumption), but also makes it more prone to sticking and slipping effects during startup or low-speed rotation, leading to jerky and uneven rotation. This embodiment of the invention transforms the large-area surface contact into a small-area line or point contact between the limiting component and the supporting groove 13, making the rotation of the bearing housing 20 smoother, faster, and more responsive. It also reduces the performance requirements of the drive motor, contributing to energy conservation.

[0041] Continue reading Figure 2 and Figure 3 In some embodiments of this utility model, the limiting component includes a first limiting rib 21 and a second limiting rib 22 arranged axially at intervals along the base 10 or the bearing housing 20, and a limiting groove 23 is formed between the first limiting rib 21 and the second limiting rib 22.

[0042] Since the limiting component in the above embodiments is a relatively broad concept, it can be a simple annular boss or other configuration forms. In this embodiment, the limiting component is specifically set as a first limiting rib 21 and a second limiting rib 22, and a limiting groove 23 formed between the first limiting rib 21 and the second limiting rib 22.

[0043] During the rotation of the supporting housing 20 relative to the base 10, the first supporting rib 11 is slidably accommodated within the limiting groove 23, and the second limiting rib 22 is slidably accommodated within the supporting groove 13. This can be understood as how the ribs and groove structures on the two components interlock and mesh with each other. That is, a protruding rib of one component inserts into the groove of another component, and simultaneously, a protruding rib of the other component also inserts into the groove of this component. It is no longer a relationship of inner and outer rings of a boss in a groove, but rather forms a structural interlock.

[0044] This double-groove interlocking design creates multiple support and limiting surfaces in both the radial (horizontal sway) and axial (vertical movement) directions. This effectively controls the fit clearance between the bearing housing 20 and the base 10, resulting in minimal sway during rotation and significantly improved guiding accuracy and stability.

[0045] Furthermore, the interlocking structure allows the two components to better support each other under stress, resulting in a more uniform stress distribution and enhanced overall structural rigidity and impact resistance. Simultaneously, the first limiting rib 21 forms a barrier, not only enhancing the appearance of the pan-tilt camera but also preventing external dust and other contaminants from entering its interior, protecting the drive assembly 40 and internal circuitry, and improving the product's durability and environmental adaptability.

[0046] Continue reading Figure 2 and Figure 3 In some embodiments of this utility model, the second limiting rib 22 has a first limiting surface 221, a second limiting surface 222 and a guide inclined surface 223. The guide inclined surface 223 is located between the first limiting surface 221 and the second limiting surface 222, and extends obliquely from the location of the second limiting surface 222 toward the first limiting surface 221.

[0047] The first limiting surface 221 and the second limiting surface 222 are arranged back to back, meaning that one surface faces upward and the other faces downward, and together they constitute the stop surface that limits axial movement (up and down movement).

[0048] The cross-sectional diameter of the second support rib 12 is larger than that of the first support rib 11, so that the second limiting rib 22 can pass over the first support rib 11 and enter the support groove 13 during assembly, and be blocked by the second support rib 12 after assembly. This should be understood as the radial dimension, that is, the radial extension length of the second support rib 12. In other words, by setting the dimensions, it can be ensured that the second limiting rib 22 can pass over the first support rib 11 and enter the support groove 13, but cannot pass over the second support rib 12, thereby preventing the second limiting rib 22 from falling out of the support groove 13.

[0049] When the support housing 20 is assembled with the base 10, the edge of the support groove 13 on the support housing 20 first contacts the guide slope 223 on the second limiting rib 22. As pressure is applied, the second limiting rib 22, like a wedge, decomposes the force into an axial component and a radial component. The radial component forces the elastic parts in the support housing 20 or the base 10 to undergo temporary elastic deformation. Once the second limiting rib 22 has completely passed the edge of the first support rib 11, the elastic deformation recovers, and the system enters a stable working position with double groove interlocking.

[0050] Furthermore, the guide slope 223 extends obliquely from the location of the second limiting surface 222 toward the first limiting surface 221, so that the contact between it and the side wall of the support groove 13 is a line contact, which can reduce the contact area between the two and reduce the friction.

[0051] In some embodiments of this utility model, in order to reduce rotational friction and abnormal noise, a lubricating medium, such as grease, can be pre-placed in the support groove 13.

[0052] Continue reading Figure 4 In some embodiments of this utility model, the first support rib 11 and the second support rib 12 arranged in parallel form a set of support rib modules. The support rib modules are provided in at least three sets, and the at least three sets of support rib modules are arranged in an array along the circumferential direction of the base 10 or the bearing housing 20.

[0053] For those skilled in the art, this means that the first support rib 11 and the second support rib 12 are functionally inseparable, together forming a groove for support or positioning to achieve complete support and limiting functions. The support rib module has at least three sets. Since three points define a plane, at least three support points that are not on the same straight line are required to be stably supported without swaying or overturning.

[0054] The bearing shell 20 with only one or two sets of support points will inevitably tilt and sway when subjected to non-centrally symmetrical axial loads, resulting in poor rotation, abnormal noise, and even the interlocking structure may come off or be damaged due to uneven force.

[0055] To address this, this embodiment of the invention employs at least three sets of support modules, ensuring the load-bearing housing 20 is stably fixed on a plane of rotation. Regardless of the distribution of external loads, these three or more support points can jointly bear the load, thus completely solving the problems of tilting and swaying of the load-bearing housing 20 and ensuring its operational stability and concentricity under any load conditions.

[0056] Continue reading Figure 4 In some embodiments of this utility model, when six sets of support rib modules are provided, every two sets of support rib modules form a support point on the inner wall of the base 10 or the bearing housing 20. This utility model embodiment takes the base 10 as an example for explanation. That is, a support point includes two first support ribs 11 and two second support ribs 12 arranged in parallel, and the two first support ribs 11 and the two second support ribs 12 are spaced apart.

[0057] When the supporting housing 20 rotates relative to the base 10, the arrayed multiple sets of support rib modules can more effectively distribute the load to each support module, improving the overall load-bearing capacity and impact resistance. The evenly distributed support points mean that the rotational friction is constant and balanced throughout the rotation process, avoiding the feeling of jamming caused by uneven distribution of support points.

[0058] Continue reading Figure 2 In some embodiments of this utility model, multiple limiting components (a module composed of the first limiting rib 21 and the second limiting rib 22) are spaced apart along the circumferential direction of the base 10 or the bearing housing 20. A deformation groove 24 is formed between any two adjacent limiting components. The width of the deformation groove 24 is less than the arc length on the virtual circle where each supporting groove 13 is located. That is, on the virtual circle where all supporting grooves 13 are located, each supporting groove 13 occupies a small arc length. The arc length on the virtual circle where each supporting groove 13 is located can also be roughly understood as the length of the supporting groove 13 in the horizontal direction.

[0059] In the above embodiments, the limiting component can be understood as being arranged in a circle along the circumference of the bearing housing 20. However, when assembling the bearing housing 20 and the base 10, the limiting component needs to deform, and setting a circle makes it inconvenient for the limiting component to deform.

[0060] Therefore, in this embodiment of the utility model, the limiting components are spaced apart on the outer circumferential surface of the bearing housing 20. The gap between two adjacent limiting components forms a deformation groove 24. When the bearing housing 20 is assembled with the base 10, the edge of the support groove 13 on the bearing housing 20 will first contact the guide slope 223 on the second limiting rib 22, causing the second limiting rib 22 to undergo temporary elastic deformation. All the second limiting ribs 22 on the bearing housing 20 will shrink towards the center of the bearing housing 20, and the width of the deformation groove 24 will decrease, so that the second limiting rib 22 can easily be inserted into the support groove 13.

[0061] The width of the deformation groove 24 is less than the arc length of the virtual circle on which each support groove 13 is located, to prevent the limiting component from detaching from the support groove 13 through the deformation groove 24 during the sliding process within the support groove 13. Therefore, the width of the deformation groove 24 ensures that when the bearing housing 20 and the base 10 are assembled, all the second limiting ribs 22 can be compressed towards the center of the bearing housing 20; and the limiting component will not get stuck or detach from the support groove 13 during the sliding process within the support groove 13.

[0062] Continue reading Figures 2 to 4 In some embodiments of this utility model, a mounting cavity 25 is constructed on the bearing housing 20, and a drive assembly 40 is embedded in the mounting cavity 25. The drive assembly 40 has a drive shaft 41, which is fixedly connected to the base 10. The cable of the drive assembly 40 is wound around the side wall of the mounting cavity 25 and electrically connected to the camera body 30.

[0063] Conventional designs typically fix the motor to the base 10 and drive the rotating components above via gears or belts. However, in this embodiment of the invention, the drive assembly 40 (usually a motor) is embedded inside the rotating support housing 20, while its drive shaft 41 (i.e., the fixed shaft of the motor) is fixed to the stationary base 10, forming an inverted installation method.

[0064] The cable of the drive assembly 40 is wound around the side wall of the mounting cavity 25 and faces directly, which solves the technical problem in the pan-tilt camera: the power supply cable and the signal transmission cable of the rotating part are easy to get tangled. When the housing 20 (and the camera module inside) needs to rotate 360 ​​degrees or more, the cable connecting the drive assembly 40 and other internal electronic components is easy to get tangled, stretched and twisted, which eventually leads to cable fatigue and breakage, causing product failure.

[0065] In this embodiment of the invention, the cable of the drive component 40 is fixed relative to the carrier housing 20 and the camera body 30. During the rotation of the carrier housing 20 relative to the base 10, the drive component 40, the cable of the drive component 40 and the carrier housing 20 rotate synchronously, which can avoid frequent bending of the cable, effectively extend the service life of the cable and improve product reliability.

[0066] Essentially, a key innovation of this invention lies in the installation method of the drive component 40. By mounting the drive component 40 onto the carrier housing 20, its cable is relatively fixed to the carrier housing 20. When the PTZ camera rotates horizontally, the cable moves only as a whole with the carrier housing 20 and the camera body 30, without relative twisting or bending against the stationary base 10. This fundamentally avoids cable fatigue and wear problems, significantly extending the cable's service life, thereby resulting in longer operating time and more stable operation of the PTZ camera.

[0067] Specifically, the base 10 is provided with a mounting part 14, and the mounting part 14 is provided with a shaft hole 15. The drive shaft 41 is inserted into the shaft hole 15 to achieve a fixed fit with the base 10, for example by press fitting or key connection.

[0068] The housing 20 is also provided with a cable fixing clip 26, and the cable of the drive assembly 40 is fixed to the cable fixing clip 26. The cable fixing clip 26 firmly fixes a part of the cable to the housing 20, so that external vibration and tensile force are absorbed by the cable fixing clip 26 and will not be transmitted to the vulnerable electrical connection point, thereby enhancing the long-term reliability of the electrical connection.

[0069] The cable fixing clip 26 is a common standard part or a one-piece injection molded structure, the form and function of which are obvious to those skilled in the art. They can easily add such a clip structure to the housing to achieve the function of fixing and protecting the cable.

[0070] When the drive assembly 40 is powered on, the motor housing will rotate in the opposite direction because its drive shaft 41 is fixed relative to the base 10. Since the motor housing is fixed to the carrier housing 20, the rotation of the motor housing will cause the carrier housing 20 and the camera body 30 above it to rotate horizontally relative to the base 10.

[0071] After the cable of the drive assembly 40 is led out from the motor, it is tightly coiled and secured in the drive assembly 40 cable fixing clip 26 provided on the carrier housing 20, and then passed through the camera body 30 to connect to the internal single board. Since the drive assembly 40 and its cable are both fixed relative to the carrier housing 20, they rotate synchronously as a whole. Therefore, within the entire horizontal rotation range of the pan-tilt camera, there is no relative movement between the cable and the stationary base 10, thus completely avoiding repeated bending and wear of the cable, greatly improving the reliability and service life of the product.

[0072] It is understandable that this utility model, through creative improvements to the mechanical structure of the pan-tilt camera, not only achieves a low-cost design without bearings, but also fundamentally solves the problem of wear on the drive cable, thus having significant practical value and economic benefits.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pan-tilt camera, characterized in that, include: Base; A supporting housing is connected to the base and can rotate relative to the base; The camera body is fixedly connected to the supporting housing; A drive assembly is fixedly mounted on either the support housing or the base. The drive assembly has a drive shaft connected to the other of the support housing and the base to drive the support housing to rotate relative to the base. The inner wall of one of the base and the bearing housing is provided with a first support rib and a second support rib at intervals along its own height direction, and a support groove for providing axial support is formed between the first support rib and the second support rib. The inner wall of the other of the base and the bearing housing is provided with a limiting component. During the rotation of the bearing housing relative to the base, the sliding engagement between the support groove and the limiting component is used to guide the rotation and limit the axial movement of the bearing housing.

2. The PTZ camera according to claim 1, characterized in that, The limiting component includes a first limiting rib and a second limiting rib that are spaced apart along the height direction of the base or the bearing housing, and a limiting groove is formed between the first limiting rib and the second limiting rib. During the rotation of the bearing housing relative to the base, the first support rib is slidably accommodated in the limiting groove, and the second limiting rib is slidably accommodated in the support groove.

3. The PTZ camera according to claim 2, characterized in that, The second limiting rib has a first limiting surface, a second limiting surface, and a guide slope. The guide slope is located between the first limiting surface and the second limiting surface, and extends obliquely from the location of the second limiting surface toward the first limiting surface. The cross-sectional diameter of the second support rib is larger than that of the first support rib, so that the second limiting rib passes over the first support rib and enters the support groove during assembly, and is blocked by the second support rib after assembly.

4. The PTZ camera according to claim 1, characterized in that, The first support rib and the second support rib form a set of support rib modules. The support rib modules are provided in at least three sets, and the at least three sets of support rib modules are arranged in an array along the circumferential direction of the base or the bearing shell.

5. The PTZ camera according to claim 4, characterized in that, When six sets of the support rib modules are provided, every two sets of the support rib modules form a support point on the inner wall of the base or the bearing housing.

6. The PTZ camera according to claim 4, characterized in that, The limiting components are provided in multiple intervals along the circumferential direction of the base or the bearing housing, and a deformation groove is formed between any two adjacent limiting components. The width of the deformation groove is less than the arc length on the virtual circle where the support groove formed between each group of first support ribs and second support ribs is located.

7. The pan-tilt camera according to claim 1, characterized in that, The support groove is pre-filled with a lubricating medium.

8. The pan-tilt camera according to any one of claims 1 to 7, characterized in that, The supporting housing has an installation cavity, the drive assembly is embedded in the installation cavity, the drive assembly has a drive shaft, and the drive shaft is fixedly connected to the base; The cable of the drive component is wound around the side wall of the mounting cavity and electrically connected to the camera body.

9. The pan-tilt camera according to claim 8, characterized in that, The base is provided with a mounting part, and the mounting part is provided with a shaft hole, into which the drive shaft is inserted.

10. The PTZ camera according to claim 8, characterized in that, The housing is also provided with a cable fixing buckle, and the cable of the drive component is fixed to the cable fixing buckle.

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