Pan-tilt shaft sealing structure of intelligent monitoring equipment

Abstract

A pan-tilt shaft sealing structure of intelligent monitoring equipment comprises a rotating disc, and one end of the rotating disc is fixedly connected with a camera; one end of the fixed seat is fixedly connected with the holder, and the other end of the fixed seat is connected with the middle rotating shaft; the middle rotating shaft is rotatably and hermetically arranged in the other end of the rotating disc; one end of the middle rotating shaft is provided with a synchronous pulley for connecting a motor, and the other end of the middle rotating shaft is hermetically and fixedly connected to the fixed seat. Good sealing performance in the using process can be guaranteed, the waterproof performance is improved, and meanwhile the holder has the advantages of being compact and simple in structure, stable in connection, smooth in holder rotation and high in working stability.

Description

Technical Field

[0001] This utility model relates to the field of intelligent monitoring technology, and in particular to a gimbal shaft sealing structure for intelligent monitoring equipment. Background Technology

[0002] Intelligent monitoring equipment, such as cameras or webcams, is widely used in modern life. They typically use pan-tilt units to capture images from multiple angles.

[0003] Currently, traditional intelligent monitoring equipment with pan-tilt units, such as pan-tilt cameras, consists of a pan-tilt unit, a camera, and a drive shaft. The pan-tilt unit and the camera are connected by the drive shaft, with one end of the drive shaft connected to the camera and the other end connected to the motor. The bearing is fixed to the pan-tilt unit by a bearing housing, and the drive shaft passes through the bearing and cooperates with the inner ring of the bearing.

[0004] Since the drive shaft is directly connected to the motor, and the drive shaft is often sealed with other components using sealing rings, the precision of the parts must be very high. Long-term rotation can easily cause wear and deformation, affecting the sealing effect, or cause high frictional resistance, resulting in excessive motor operating resistance, failure, and stalling. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides a gimbal shaft sealing structure for intelligent monitoring equipment. This structure can ensure good sealing performance during use, improve waterproof performance, and has the advantages of compact and simple structure, stable connection, smooth gimbal rotation, and strong working stability.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A sealing structure for the pan-tilt shaft of an intelligent monitoring device, comprising:

[0008] A rotating disk, one end of which is fixedly connected to a camera;

[0009] The mounting base has one end fixedly connected to the gimbal and the other end connected to the central rotating shaft.

[0010] An intermediate rotating shaft is rotatably and sealed inside the other end of the rotating disk; one end of the intermediate rotating shaft is equipped with a synchronous pulley for connecting the motor, and the other end is sealed and fixedly connected to the fixed base.

[0011] As a further optional design of this technical solution, the intermediate shaft includes a shaft body and a shaft shoulder, a first fastening hole, a shaft abutment surface, a stop limiting groove, and a second fastening hole formed on the shaft body. The shaft shoulder and the first fastening hole are both provided at one end of the shaft body for connecting to the synchronous pulley. The first fastening hole is used to fix the shaft to the synchronous pulley by means of a first fastener. The shaft abutment surface, the stop limiting groove, and the second fastening hole are both provided at the other end of the shaft body for connecting to the fixed seat. The second fastening hole is used to fix the shaft to the fixed seat by means of a second fastener.

[0012] As a further optional design of this technical solution, the intermediate shaft also includes a rotatable axis rotation slip ring located at its axial center.

[0013] As a further optional design of this technical solution, the rotating disk includes a disk body and a central mounting hole, a rotating disk shoulder, and a third fastening hole formed in the disk body. The central mounting hole is used to install the intermediate rotating shaft, and the third fastening hole is used to connect with the intermediate rotating shaft.

[0014] As a further optional design of this technical solution, the fixed seat includes a seat body, a fixed seat abutment surface formed on the seat body, and a stop limiting block. The fixed seat abutment surface is opened at the center of the seat body and is used to connect with the intermediate rotating shaft. The stop limiting block is located in the fixed seat abutment surface and is used to cooperate with the stop limiting groove.

[0015] As a further optional design of this technical solution, a first sealing body is provided between the intermediate rotating shaft and the central assembly hole. The first sealing body includes a first bearing, a shaft sealing ring and a second bearing arranged sequentially along the axial direction. One end of the first sealing body is limited by the rotating shaft shoulder and the rotating disk shoulder, and the other end of the first sealing body is limited by the bearing pressure plate fixedly connected to the rotating disk and the end of the fixed seat.

[0016] As a further optional design of this technical solution, the shaft sealing ring includes a clamping spring and sealing teeth disposed inside, and the sealing teeth form a seal by acting on the intermediate rotating shaft through the clamping spring.

[0017] As a further optional design of this technical solution, a second sealing body is provided between the intermediate rotating shaft and the fixed seat. The second sealing body includes a sealing ring positioned between the abutting surface of the fixed seat and the abutting surface of the rotating shaft.

[0018] Using the above technical solution, this utility model provides a gimbal shaft sealing structure for an intelligent monitoring device. By setting up a rotating disk, a fixed base, and an intermediate rotating shaft, and utilizing the intermediate rotating shaft as a connector, the rotating disk indirectly and fixedly connects to the gimbal. Power is transmitted from the motor to the intermediate rotating shaft via a synchronous pulley, then transferred by the rotating disk to the gimbal, which rotates relative to the fixed base connected to the camera. Compared to a direct-connection gimbal drive shaft design, this structure is more compact and simple, provides a stable connection, ensures smooth gimbal rotation, and offers strong operational stability. It avoids problems such as wear and deformation from prolonged rotation affecting the sealing effect, or excessive frictional resistance leading to motor failure and stalling. Furthermore, the intermediate rotating shaft seals both between the rotating disk and the fixed base, further optimizing the sealing performance and improving waterproofing.

[0019] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a three-dimensional structural diagram of the gimbal shaft sealing structure of an intelligent monitoring device according to an embodiment of this utility model.

[0022] Figure 2 This is a front view schematic diagram of the gimbal shaft sealing structure of an intelligent monitoring device according to an embodiment of this utility model.

[0023] Figure 3 yes Figure 2 A schematic diagram of the half-section structure.

[0024] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0025] Figure 5 This is a top view schematic diagram of the gimbal shaft sealing structure of an intelligent monitoring device according to an embodiment of this utility model.

[0026] Figure 6 and Figure 7 This is a three-dimensional structural diagram of the intermediate rotating shaft in the gimbal shaft sealing structure of an intelligent monitoring device according to an embodiment of this utility model.

[0027] Figure 8 This is a three-dimensional structural diagram of the fixed seat in the gimbal shaft sealing structure of an intelligent monitoring device according to an embodiment of this utility model.

[0028] Figure 9This is a three-dimensional structural diagram of the rotating disk in the gimbal shaft sealing structure of an intelligent monitoring device according to an embodiment of this utility model, with partial cross-sectional views also shown.

[0029] Explanation of the markings in the diagram:

[0030] 1-Rotating disk; 11-Disk body; 111-Center mounting hole; 112-Rotating disk shoulder; 113-Third fastening hole;

[0031] 2-Fixed seat; 21-Seat body; 211-Fixed seat contact surface; 212-Stop limit block;

[0032] 3-Intermediate shaft; 31-Shaft body; 311-Shaft shoulder; 312-First fastening hole; 313-Shaft abutment surface; 314-Stop limiting groove; 315-Second fastening hole; 32-Axis rotation slip ring;

[0033] 4-Synchronous belt pulley;

[0034] 5-First sealing body; 51-First bearing; 52-Shaft sealing ring; 521-Clamping spring; 522-Sealing tooth; 53-Second bearing;

[0035] 6-Second sealing body; 61-Sealing ring. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0037] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0038] In the description of this utility model, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 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 this utility model based on the specific circumstances.

[0039] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0040] Figures 1 to 9 A schematic diagram of a preferred embodiment of the present invention is shown. Figure 1-5A gimbal shaft sealing structure for an intelligent monitoring device includes a rotating disk 1, a fixed base 2, and an intermediate rotating shaft 3. One end of the rotating disk 1 is fixedly connected to a camera. One end of the fixed base 2 is fixedly connected to the gimbal, and the other end is connected to the intermediate rotating shaft 3. The intermediate rotating shaft 3 is rotatably and sealingly disposed inside the other end of the rotating disk 1. At the same time, one end of the intermediate rotating shaft 3 is provided with a synchronous pulley 4 for connecting a motor, and the other end is sealed and fixedly connected to the fixed base 2.

[0041] In use, the installed rotating disk 1 can rotate freely around the intermediate rotating shaft 3360 degrees. Compared with the prior art (e.g., CN 106246918 A) where the drive shaft is directly fixed to the gimbal, in this embodiment, the intermediate rotating shaft 3 is connected to the gimbal through the rotating disk 1. This reduces the frictional resistance and rotational wear deformation of the intermediate rotating shaft 3 during long-term operation, optimizes the sealing effect to a certain extent, and avoids the problem of motor failure and stalling due to excessive working resistance. At the same time, based on the sealing settings between the intermediate rotating shaft 3 and the rotating disk 1, and between the intermediate rotating shaft 3 and the fixed base 2, an integrated seal between the rotating disk 1 and the fixed base 2 and the rotating shaft is achieved, further optimizing the sealing and waterproof performance.

[0042] In a further optional embodiment of this example, refer to Figure 3 , Figure 6 and Figure 7 The intermediate shaft 3 includes a shaft body 31 and a shaft shoulder 311, a first fastening hole 312, a shaft abutment surface 313, a stop limiting groove 314, and a second fastening hole 315 formed on the shaft body 31. The shaft shoulder 311 and the first fastening hole 312 are both located at one end of the shaft body 31 for connecting to the synchronous pulley 4. The first fastening hole 312 is used to fix the shaft body 31 to the synchronous pulley 4 using a first fastener. More specifically, the synchronous pulley 4 is mounted on the intermediate shaft 3 using screws or the like as the first fastener. The shaft abutment surface 313, the stop limiting groove 314, and the second fastening hole 315 are both located at the other end of the shaft body 31 for connecting to the fixed seat 2. The second fastening hole 315 is used to fix the shaft body 31 to the fixed seat 2 using a second fastener.

[0043] In a further optional embodiment of this example, refer to Figure 3 The intermediate shaft 3 also includes a rotatable axis rotation slip ring 32 disposed at its axial center. More specifically, in this embodiment, the axis rotation slip ring 32 can also be detachably fixed to the intermediate shaft 3 using screws or the like as a third fastener, ensuring that the axis rotation slip ring 32 can rotate freely with the intermediate shaft 3.

[0044] In a further optional embodiment of this example, refer to Figure 9The rotating disk 1 includes a disk body 11 and a central mounting hole 111, a rotating disk shoulder 112 and a third fastening hole 113 formed in the disk body 11. The central mounting hole 111 is used to install the intermediate rotating shaft 3, and the third fastening hole 113 is used to connect with the intermediate rotating shaft 3.

[0045] In a further optional embodiment of this example, refer to Figure 8 The fixed seat 2 includes a seat body 21 and a fixed seat abutment surface 211 and a stop limiting block 212 formed on the seat body 21. The fixed seat abutment surface 211 is opened at the center of the seat body 21 and is used to connect with the intermediate rotating shaft 3. The stop limiting block 212 is located in the fixed seat abutment surface 211 and is used to cooperate with the stop limiting groove 314.

[0046] In a further optional embodiment of this example, refer to Figure 3 and Figure 4 A first sealing body 5 is provided between the intermediate rotating shaft 3 and the central mounting hole 111. That is, the first sealing body 5 is installed on the rotating disk 1 with the central mounting hole 111, and the intermediate rotating shaft 3 is installed inside the first sealing body 5. The first sealing body 5 includes a first bearing 51, a shaft sealing ring 52 and a second bearing 53 arranged sequentially along the axial direction. One end of the first sealing body 5 is limited by the rotating shaft shoulder 311 and the rotating disk shoulder 112, and the other end of the first sealing body 5 is limited by the bearing pressure plate fixedly connected to the rotating disk 1 and the end of the fixed seat 2.

[0047] In practice, the second sealing body 6 is designed to more effectively enhance the sealing effect after installation.

[0048] In a further optional embodiment of this example, refer to Figure 4 The shaft sealing ring 52 includes a clamping spring 521 and a sealing tooth 522 disposed inside. The sealing tooth 522 acts on the intermediate rotating shaft 3 through the clamping spring 521 to form a rotation and seal.

[0049] In practice, the intermediate rotating shaft 3 is clamped by the shaft sealing ring 52, achieving the first-level sealing effect. The clamping spring 521 set in the shaft sealing ring 52 further increases the clamping force of the intermediate rotating shaft 3, which can maintain its own position without deformation and displacement and reduce loosening, thus improving the rotational sealing performance. The sealing teeth 522 set in the shaft sealing ring 52 further effectively reduce the sealing contact damping, which is conducive to further improving the resistance problem of the rotation process of the existing sealing method.

[0050] In a further optional embodiment of this example, refer to Figure 3A second sealing body 6 is provided between the intermediate rotating shaft 3 and the fixed seat 2. The second sealing body 6 includes a sealing ring 61 positioned between the fixed seat abutment surface 211 and the rotating shaft abutment surface 313. That is, the fixed seat 2 can be fixed to the intermediate rotating shaft 3 by five screws as second fasteners, and the sealing ring 61 is pressed between the two. The sealing ring 61 clamped between the rotating shaft abutment surface 313 and the fixed seat abutment surface 211 can further improve the sealing effect.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A sealing structure for the pan-tilt shaft of an intelligent monitoring device, characterized in that, include: A rotating disk, one end of which is fixedly connected to a camera; A fixed base, one end of which is fixedly connected to the gimbal, and the other end of which is connected to the central rotating shaft; An intermediate rotating shaft is rotatably and sealed inside the other end of the rotating disk; one end of the intermediate rotating shaft is provided with a synchronous pulley for connecting the motor, and the other end is sealed and fixedly connected to the fixed base.

2. The gimbal shaft sealing structure for an intelligent monitoring device according to claim 1, characterized in that, The intermediate shaft includes a shaft body and a shaft shoulder, a first fastening hole, a shaft abutment surface, a stop limiting groove, and a second fastening hole formed on the shaft body. The shaft shoulder and the first fastening hole are both located at one end of the shaft body for connecting to the synchronous pulley. The first fastening hole is used to fix the shaft to the synchronous pulley by a first fastener. The shaft abutment surface, the stop limiting groove, and the second fastening hole are all located at the other end of the shaft body for connecting to the fixed seat. The second fastening hole is used to fix the shaft to the fixed seat by a second fastener.

3. The gimbal shaft sealing structure for an intelligent monitoring device according to claim 2, characterized in that, The intermediate shaft also includes a rotatable axis rotation slip ring located at its axial center.

4. The gimbal shaft sealing structure of an intelligent monitoring device according to claim 3, characterized in that, The rotating disk includes a disk body and a central mounting hole, a rotating disk shoulder, and a third fastening hole formed in the disk body. The central mounting hole is used to install the intermediate rotating shaft, and the third fastening hole is used to connect with the intermediate rotating shaft.

5. The gimbal shaft sealing structure of an intelligent monitoring device according to claim 4, characterized in that, The fixed seat includes a seat body, a fixed seat abutment surface formed on the seat body, and a stop limiting block. The fixed seat abutment surface is opened at the center of the seat body and is used to connect with the intermediate rotating shaft. The stop limiting block is located in the fixed seat abutment surface and is used to cooperate with the stop limiting groove.

6. The gimbal shaft sealing structure of an intelligent monitoring device according to claim 5, characterized in that, A first sealing body is provided between the intermediate rotating shaft and the central assembly hole. The first sealing body includes a first bearing, a shaft sealing ring and a second bearing arranged sequentially along the axial direction. One end of the first sealing body is limited by the rotating shaft shoulder and the rotating disk shoulder, and the other end of the first sealing body is limited by the bearing pressure plate fixedly connected to the rotating disk and the end of the fixed seat.

7. The gimbal shaft sealing structure for an intelligent monitoring device according to claim 6, characterized in that, The shaft sealing ring includes a clamping spring and sealing teeth disposed inside, and the sealing teeth act on the intermediate rotating shaft through the clamping spring to form a seal.

8. A gimbal shaft sealing structure for an intelligent monitoring device according to claim 5, 6, or 7, characterized in that, A second sealing body is provided between the intermediate rotating shaft and the fixed base. The second sealing body includes a sealing ring positioned between the abutting surface of the fixed base and the abutting surface of the rotating shaft.

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