Synchronous belt tensioning mechanism and camera

Abstract

The utility model relates to a synchronous belt tensioning mechanism and a camera, and the mechanism comprises a motor support which is provided with a guide groove extending along a preset direction; the limiting assembly comprises a fixing part, a guide column and a limiting part, the fixing part is used for being arranged on the shell, the guide column is arranged on the side face, facing the motor support, of the fixing part in a protruding mode and corresponds to the guide groove, the guide column can slide in the guide groove in the preset direction, and the limiting part is fixedly connected with the guide column on the side, away from the fixing part, of the motor support; the limiting piece and the fixing piece limit the motor support on the two side faces of the motor support respectively. The elastic piece is arranged at one end of the motor in the preset direction, and the two ends of the elastic piece are used for abutting against the shell and the motor respectively. The motor support can only slide in the preset direction through the guide columns and the guide grooves, it is guaranteed that the motor support cannot incline or turn over relative to the limiting assembly through the limiting piece and the fixing piece, accurate control over the tensile force of the synchronous belt is achieved, and the movement precision and the service life of equipment are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to monitoring equipment technical field, especially a synchronous belt tensioning mechanism and camera. BACKGROUND

[0002] Some cloud platform type cameras use synchronous pulley transmission mechanism as equipment driving mechanism. Synchronous belt can guarantee accurate transmission ratio, but with long time running wear and tear and slack, will appear skip tooth, tooth off phenomenon, influence normal work of equipment. Therefore need to pre-tension synchronous belt, guarantee normal work of synchronous belt in life cycle.

[0003] But, the existing synchronous belt tensioning mechanism is usually that elastic part pushes and props motor in the middle part of motor when pre-tensioning, synchronous belt reversely pulls motor in the end part of motor, causes motor to be easy to incline under the action of overturning torque, and synchronous pulley in the end part of motor also inclines. When locking screw, motor and synchronous pulley in the end part of motor are straightened, and synchronous belt is pulled again, thereby causing that synchronous belt tensioning force is too large, motor radial force is too large, and the service life of motor is influenced. UTILITY MODEL CONTENTS

[0004] Therefore, it is necessary to provide a synchronous belt tensioning mechanism and camera to prevent motor from inclining when pre-tensioning and guarantee the service life of motor.

[0005] The utility model provides a synchronous belt tensioning mechanism first, for being located in casing, include: motor support, for installing motor, motor support is equipped with along the direction of extension of guide groove, direction of extension is perpendicular with the axis of output shaft of motor, limiting component, including fixed part, guide column and limiting part, fixed part is used to set up in casing, guide column protrudes in the side face of fixed part towards motor support and with guide groove correspond arrangement, guide column can slide in guide groove along the direction of extension, limiting part and guide column fixed connection in the side of motor support away from fixed part, limiting part and fixed part are respectively in the both sides of motor support and motor support limiting, and, elastic part, set up in the one end of motor along the direction of extension, both ends of elastic part are respectively used with casing and motor abut.

[0006] In the synchronous belt tensioning mechanism, the motor is installed on the motor support, and the transmission assembly is connected with the motor, so that the synchronous belt exerts a pulling force on the first pulley and the output shaft of the motor, and the elastic member exerts a reverse pushing force on the motor, so that the motor and the motor support can slide relative to the limiting assembly and the shell in a preset direction until the motor is in a force balance state, so as to realize the pre-tensioning of the synchronous belt, and finally the motor support and the shell are fixed; during the sliding of the motor and the motor support relative to the limiting assembly and the shell, the cooperation of the guide column and the guide groove enables the motor and the motor support to slide only in the preset direction, and the limiting member and the fixing member limit the motor support on both sides of the motor support, so that the motor support can slide relative to the limiting assembly in the preset direction while preventing the motor support from tilting or overturning relative to the limiting assembly, avoiding the synchronous belt tension changing due to the motor being forcibly straightened when the motor support and the shell are fixed, so that the synchronous belt tensioning mechanism can realize accurate control of the tension of the synchronous belt, and ensure the motion accuracy and service life of the equipment.

[0007] In one of the embodiments, one end of the guide column is provided with a threaded hole facing the motor support, the limiting member includes a threaded part and a limiting part connected with each other, the threaded part is fixed through threaded cooperation with the threaded hole, and the limiting part has a size greater than that of the guide groove in a direction parallel to the axis of the output shaft of the motor.

[0008] In this way, the limiting part and the fixing member limit the motor support on both sides of the motor support, preventing the motor support from tilting or overturning relative to the limiting assembly, and the structure of the limiting assembly is simple, facilitating production and assembly.

[0009] In one of the embodiments, the motor support is parallel to the axis of the output shaft of the motor.

[0010] In this way, the user can operate conveniently, so that the synchronous belt tensioning mechanism can be applied to a camera with a small internal operating space of the shell.

[0011] In one of the embodiments, the number of guide grooves is at least two, and at least two guide grooves are located on both sides of the motor in the preset direction.

[0012] In this way, the limiting and guiding effects of the limiting assembly on the motor support can be improved, preventing the motor and the motor support from tilting, thereby improving the reliability of the synchronous belt tensioning mechanism.

[0013] In one of the embodiments, the elastic member is provided as a spring sheet, the spring sheet includes a fixed part and an elastic part, the fixed part is used for fixed connection with the shell, one end of the elastic part is connected with the fixed part, and the other end is used for abutting against the motor.

[0014] In this way, the elastic sheet has good elasticity, low cost, and can be designed into different shapes and sizes according to requirements, so as to adapt to camera shells of different shapes and sizes, so that the synchronous belt tensioning mechanism can be applied to cameras with small internal operation space.

[0015] In one of the embodiments, the elastic part includes an inclined section and a first fitting section, two ends of the inclined section are connected with the fixed part and the first fitting section respectively, and the first fitting section is used for fitting with the outer wall of the motor.

[0016] In this way, the first fitting section can increase the contact area between the elastic part and the outer wall of the motor, and the inclined section can play a guiding role during installation, so as to facilitate user operation, and the synchronous belt tensioning mechanism can be applied to cameras with small internal operation space.

[0017] In one of the embodiments, the fixed part includes a fixed section and a second fitting section, two ends of the second fitting section are connected with the fixed section and the inclined section respectively, the second fitting section is used for fitting with the inner wall of the shell, and the fixed section is used for fixed connection with the shell.

[0018] In this way, the second fitting section can increase the contact area between the fixed part and the shell, and the fixed section is arranged at one end of the second fitting section away from the inclined section, so as to facilitate the user to fix the fixed section with the shell.

[0019] In one of the embodiments, the fixed part and the elastic part are integrally formed.

[0020] In this way, the production and processing of the elastic part are facilitated, and the deformation ability of the elastic part can be ensured.

[0021] In one of the embodiments, the motor support is further provided with a fixed hole extending in a predetermined direction, and the fixing part is provided with a avoiding hole corresponding to the fixed hole.

[0022] In this way, the motor support can be fixedly connected with the shell through the fastener at the fixed hole, so as to ensure the stability and reliability of the motor and the motor support during work, and the avoiding hole is used for avoiding the fastener.

[0023] The utility model further provides a camera which comprises the synchronous belt tensioning mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0025] Figure 1 A partial perspective structure schematic view of the camera of an embodiment of the present application is provided.

[0026] Figure 2 An explosion structure schematic view of the present application is provided. Figure 1

[0027] Figure 3 A sectional structure schematic view of the present application is provided. Figure 1

[0028] Figure 4 An enlarged structure schematic view of A in the present application is provided. Figure 3

[0029] Figure 5 A structure schematic view of the present application under the front view angle is provided. Figure 1

[0030] Figure 6 An enlarged structure schematic view of B in the present application is provided. Figure 5

[0031] Figure 7 An enlarged structure schematic view of C in the present application is provided. Figure 5

[0032] Figure 8 A structure schematic view of the synchronous belt tensioning mechanism in the present application under the bottom view angle is provided. Figure 1

[0033] Figure 9 A three-dimensional structure schematic view of the limiting assembly in the present application is provided. Figure 2

[0034] ​​​​​​​​Label: 1, motor support; 11, guide groove; 12, fixing hole; 2, limiting assembly; 21, fixing piece; 211, avoiding hole; 22, guide column; 221, threaded hole; 23, limiting piece; 231, threaded part; 232, limiting part; 3, elastic piece; 31, fixed part; 311, fixed section; 312, second abutting section; 32, elastic part; 321, inclined section; 322, first abutting section; 4, shell; 41, mounting frame; 5, motor; 6, transmission assembly; 61, first pulley; 62, second pulley; 63, synchronous belt; 7, fastener. DETAILED DESCRIPTION

[0035] In order to make the above objectives, features and advantages of the present application more clear and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and one of ordinary skill in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0036] It should be noted that when an assembly is referred to as "fixed to" or "disposed on" another assembly, it can be directly on the other assembly or there can be a mediating assembly. When an assembly is referred to as "connected to" another assembly, it can be directly connected to the other assembly or there can be a mediating assembly. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the description of the present application are for illustrative purposes only and do not indicate the only implementation.

[0037] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0038] In the present application, unless otherwise explicitly specified and limited, the "on", "under", "above" and "over" of the first feature to the second feature can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through a mediating medium. Moreover, the "on", "above" and "over" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is horizontally higher than the second feature. The "under", "below" and "under" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is horizontally lower than the second feature.

[0039] Unless otherwise defined, all technical and scientific terms used in the application's specification are intended to have the same meaning as commonly understood by one of ordinary skill in the art to which the application pertains. The terminology used in the application's specification is for describing particular embodiments only and is not intended to be limiting of the application. The use of the terms "and / or" in the application's specification is intended to encompass all possibilities of combining one or more items together or apart.

[0040] Some gimbal camera uses synchronous belt transmission mechanism as the device driving mechanism. Although the synchronous belt can guarantee the precise transmission ratio, it will be loose with long time running and wear, and the phenomena such as tooth skipping and tooth falling will occur, which will affect the normal function of the device. Therefore, the synchronous belt needs to be pre-tensioned to ensure the normal work of the synchronous belt in the service life. However, in the pre-tensioning of the existing synchronous belt tensioning mechanism, the elastic member pushes the motor at the middle part of the motor, and the synchronous belt pulls the motor at the end part of the motor in the opposite direction, which causes the motor to be easily inclined under the action of the overturning torque, and the synchronous belt pulley at the end part of the motor is also inclined. When the screws are fixed, the motor and the synchronous belt pulley at the end part of the motor are straightened, and the synchronous belt is pulled again, so that the tensioning force of the synchronous belt is too large, the radial force of the motor is too large, and the service life of the motor is affected.

[0041] In order to solve the above problems, as shown in Figures 1 to 9 , the utility model provides a synchronous belt tensioning mechanism and camera to prevent the motor from being inclined when pre-tensioning, and ensure the service life of the motor.

[0042] As shown in Figures 1 to 2 , the camera usually includes a lens (not shown in the figure), a shell 4, a motor 5 and a transmission assembly 6, wherein the motor 5 and the transmission assembly 6 are arranged in the shell 4, the transmission assembly 6 includes a first pulley 61, a second pulley 62 and a synchronous belt 63, the first pulley 61 is connected with the output shaft of the motor 5, the second pulley 62 is connected with the lens, and the synchronous belt 63 is arranged on the first pulley 61 and the second pulley 62. When the motor 5 works, the output shaft of the motor 5 can drive the first pulley 61 to rotate, the first pulley 61 drives the second pulley 62 to rotate through the synchronous belt 63, so as to drive the lens to rotate through the second pulley 62, so as to adjust the shooting angle of the lens.

[0043] The line defined between the center of the first pulley 61 and the center of the second pulley 62 extends along the preset direction, that is, the ±X axis direction shown in the figure, and the axis of the output shaft of the motor 5 extends along the ±Y axis direction shown in the figure.

[0044] As shown in Figure 2 , Figure 5 and Figure 6As shown, specifically, the synchronous belt tensioning mechanism is arranged on the shell 4, and comprises a motor support 1, a limiting assembly 2 and an elastic member 3. The motor support 1 is arranged to mount the motor 5, and is provided with a guide groove 11 extending along a preset direction, which is perpendicular to the axis of the output shaft of the motor 5. The limiting assembly 2 comprises a fixing member 21, a guide column 22 and a limiting member 23. The fixing member 21 is arranged on the shell 4. The guide column 22 is protruded from the side of the fixing member 21 facing the motor support 1 and is arranged corresponding to the guide groove 11. The guide column 22 can slide in the guide groove 11 along the preset direction. The limiting member 23 is fixedly connected with the guide column 22 on the side of the motor support 1 away from the fixing member 21. The limiting member 23 and the fixing member 21 are respectively arranged on the two side surfaces of the motor support 1 to limit the motor support 1. The elastic member 3 is arranged on one end of the motor 5 along the preset direction, and the two ends of the elastic member 3 are respectively arranged to abut against the shell 4 and the motor 5. The elastic member 3 is arranged on the end of the motor 5 close to the second pulley 62.

[0045] In the above synchronous belt tensioning mechanism, the limiting assembly 2 and the shell 4 are relatively fixed, and the motor support 1 can slide along the ±X axis direction relative to the limiting assembly 2 and the shell 4. After the motor 5 is mounted on the motor support 1 and the transmission assembly 6 is connected with the motor 5, the synchronous belt 63 will exert a pulling force on the first pulley 61 and the output shaft of the motor 5 towards the +X axis direction, and the elastic member 3 will exert a pushing force on the motor 5 towards the -X axis direction, so that the motor 5 and the motor support 1 can slide along the ±X axis direction relative to the limiting assembly 2 and the shell 4 until the motor 5 is in a force balance state, so as to realize the pre-tensioning of the synchronous belt 63, and finally the motor support 1 is fixed with the shell 4. During the sliding process of the motor 5 and the motor support 1 relative to the limiting assembly 2 and the shell 4, the cooperation between the guide column 22 and the guide groove 11 enables the motor 5 and the motor support 1 to only slide along the ±X axis direction, and the limiting member 23 and the fixing member 21 are respectively arranged on the two side surfaces of the motor support 1 to limit the motor support 1, so that the motor support 1 can slide along the ±X axis direction relative to the limiting assembly 2 while ensuring that the motor support 1 will not tilt or overturn relative to the limiting assembly 2, thereby avoiding that the motor 5 is forcibly straightened when the motor support 1 is fixed with the shell 4, so as to cause the change of the tensioning force of the synchronous belt 63, and thus the synchronous belt tensioning mechanism can realize the precise control of the tensioning force of the synchronous belt 63, and ensure the movement accuracy and service life of the equipment.

[0046] As shown in the drawings, Figure 6 and Figure 8As shown, in an embodiment, the guide column 22 is provided with a threaded hole 221 at one end of the motor support 1, the limiting piece 23 comprises a threaded part 231 and a limiting part 232 connected with each other, the threaded part 231 is fixed by thread cooperation with the threaded hole 221, and the limiting part 232 is larger in size than the guide groove 11 in the direction parallel to the axis of the output shaft of the motor 5. Wherein, the limiting piece 23 can be a common screw, bolt or the like structure, and the cost is low. The size of the limiting part 232 along the ±Y axis direction is larger than the size of the guide groove 11 along the ±Y axis direction, so that when the threaded part 231 is fixed by thread cooperation with the threaded hole 221 at the end of the motor support 1 away from the fixing piece 21, the guide groove 11 of the motor support 1 cannot be out of the guide column 22 from the limiting part 232, and the limiting part 232 and the fixing piece 21 limit the motor support 1 on both sides of the motor support 1 respectively, preventing the motor support 1 from tilting or overturning relative to the limiting assembly 2, and the structure of the limiting assembly 2 is simple, facilitating production and assembly.

[0047] Of course, in other embodiments, the limiting piece 23 can also be fixedly connected with the guide column 22 by clamping, inserting, gluing or other ways, as long as the connection strength between the limiting piece 23 and the guide column 22 can be ensured, and the guide groove 11 of the motor support 1 cannot be out of the guide column 22 from the limiting piece 23, the embodiments of the utility model do not make specific restrictions here.

[0048] As shown in Figure 2 , Figure 8 and Figure 9 , the fixing piece 21 and the motor support 1 are arranged in layers, and are attached to the side of the motor support 1 away from the motor 5. In this way, the motor support 1 slides more stably relative to the limiting assembly 2 along the ±X axis direction, thereby further preventing the motor support 1 from tilting or overturning relative to the limiting assembly 2. The height dimension of the guide column 22 is equal to or slightly larger than the thickness dimension of the motor support 1, so that the spacing between the limiting part 232 and the fixing piece 21 is equal to or slightly larger than the thickness dimension of the motor support 1, thereby enabling the motor support 1 to smoothly slide relative to the limiting assembly 2 along the ±X axis direction, while ensuring that the motor support 1 will not tilt or overturn relative to the limiting assembly 2. Wherein, the height direction of the guide column 22 and the thickness direction of the motor support 1 are both the ±Z axis direction shown in the figure.

[0049] As shown in Figure 2 and Figure 5As shown, in one embodiment, both the motor bracket 1 and the fixing member 21 are parallel to the axis of the output shaft of the motor 5. Thus, even if the motor 5, transmission assembly 6, and synchronous belt tensioning mechanism are installed inside the housing 4, which has a relatively small internal space, the user can easily fix the motor bracket 1 and fixing member 21 to the housing 4, and fix the limiting member 23 to the guide post 22, without interfering with the inner wall or other structures of the housing 4 during installation. This allows the synchronous belt tensioning mechanism to be suitable for cameras with limited internal operating space within the housing 4.

[0050] Of course, in other embodiments, when the internal operating space of the housing 4 is large, or when the motor 5 and the synchronous belt tensioning mechanism are installed on the outside of the housing 4, the motor bracket 1 and the fixing member 21 can also be perpendicular to the axis of the output shaft of the motor 5, or form an angle with the axis of the output shaft of the motor 5. As long as the stability and reliability of the connection between the motor 5 and the motor bracket 1 can be guaranteed, and the motor bracket 1 can always slide relative to the limiting component 2 along the ±X axis direction, this utility model embodiment does not impose specific limitations here.

[0051] like Figures 5 to 7 As shown, the force applied by the synchronous belt 63 to the motor 5 is located at the end of the motor 5 facing the +Y axis, while the force applied by the elastic element 3 to the motor 5 is located at the center of the motor 5. Therefore, to prevent the end of the motor 5 and the motor bracket 1 facing the +Y axis from tilting towards the +X axis, and the end of the motor 5 and the motor bracket 1 facing the -Y axis from tilting towards the -X axis, resulting in insufficient tension of the synchronous belt 63 and the problem of helical meshing transmission of the first pulley 61, the second pulley 62, and the synchronous belt 63, the number of guide grooves 11 is at least two, and along a preset direction, at least two guide grooves 11 are located on both sides of the motor 5. In this way, the limiting component 2 can improve the limiting and guiding effect on the motor bracket 1, thereby improving the reliability of the synchronous belt tensioning mechanism.

[0052] like Figures 6 to 7 As shown, the guide groove 11 can be configured as a waist-shaped groove, a rectangular groove, etc. extending along the ±X axis direction, and the cross section of the guide post 22 can be configured as a circle, a square, etc. to adapt to the shape of the guide groove 11, so as to ensure that the guide post 22 can only slide along the ±X axis direction within the guide groove 11.

[0053] like Figure 6 , Figure 7 and Figure 9As shown, in one embodiment, the motor bracket 1 is further provided with a fixing hole 12 extending in a preset direction, and the fixing member 21 is provided with a clearance hole 211 corresponding to the fixing hole 12. After the synchronous belt 63 is pre-tensioned, the motor bracket 1 can be fixedly connected to the housing 4 at the fixing hole 12 by fasteners 7 such as screws and bolts, ensuring the stability and reliability of the motor 5 and the motor bracket 1 during operation. The clearance hole 211 is used to avoid the fasteners 7 such as screws and bolts, preventing the fixing member 21 from affecting the normal connection between the motor bracket 1 and the housing 4. Of course, in other embodiments, the motor bracket 1 and the housing 4 can also be fixedly connected by adhesive, snap-fit, or other methods, as long as the stability and reliability of the connection between the motor bracket 1 and the housing 4 can be guaranteed. This utility model embodiment does not impose specific limitations here. Similarly, the fixing member 21 can also be fixedly connected to the housing 4 by fasteners 7, adhesive, snap-fit, or other methods.

[0054] like Figures 3 to 4 As shown, in one embodiment, the elastic element 3 is configured as a spring sheet, which includes a fixing part 31 and an elastic part 32. The fixing part 31 is used to fix it to the housing 4, and one end of the elastic part 32 is connected to the fixing part 31, while the other end is used to abut against the motor 5. When the motor 5 moves in the +X axis direction, the elastic part 32 deforms and applies an elastic force to the motor 5 in the -X axis direction. The user can control the tension of the synchronous belt 63 by adjusting the deformation of the elastic part 32, thereby achieving precise control of the tension of the synchronous belt 63. The spring sheet has good elasticity, low cost, and can be designed into different shapes and sizes to adapt to housings 4 of different shapes and sizes, thus enabling the synchronous belt tensioning mechanism to be suitable for cameras with limited internal operating space in the housing 4. The fixing part 31 and the elastic part 32 can be integrally formed to facilitate the production and processing of the elastic element 3 and ensure the deformation capability of the elastic element 3. Alternatively, the fixing part 31 and the elastic part 32 can also be separate structures and fixedly connected by welding or other methods.

[0055] like Figure 4As shown, specifically, the elastic part 32 includes an inclined section 321 and a first fitting section 322, two ends of the inclined section 321 are connected with the fixed part 31 and the first fitting section 322 respectively, and the first fitting section 322 is used for fitting with the outer wall of the motor 5. The first fitting section 322 can increase the contact area between the elastic part 32 and the outer wall of the motor 5, and ensure the stability of the force applied by the elastic member 3 to the motor 5 in the direction of the -X axis. The inclined section 321 is used for connecting the first fitting section 322 and the fixed part 31, and when the elastic member 3 is installed, the user can insert one end of the elastic member 3 provided with the inclined section 321 into the space between the motor 5 and the shell 4, the inclined section 321 will abut against the motor 5 or the shell 4 and be deformed, thereby playing a guiding role in the installation process, facilitating the user operation, and enabling the synchronous belt tensioning mechanism to be applicable to the camera with a smaller internal operating space of the shell 4.

[0056] As shown in the figure, Figure 4 The fixed part 31 includes a fixed section 311 and a second fitting section 312, two ends of the second fitting section 312 are connected with the fixed section 311 and the inclined section 321 respectively, the second fitting section 312 is used for fitting with the inner wall of the shell 4, and the fixed section 311 is used for fixed connection with the shell 4. The second fitting section 312 can increase the contact area between the fixed part 31 and the shell 4, and ensure the stability of the elastic member 3 in the space between the motor 5 and the shell 4. The fixed section 311 is located at one end of the second fitting section 312 away from the inclined section 321, so that when the user inserts one end of the elastic member 3 provided with the inclined section 321 into the space between the motor 5 and the shell 4, the fixed section 311 is close to the user, thereby facilitating the user to fix the fixed section 311 with the shell 4.

[0057] As shown in the figure, Figure 4 The shell 4 is internally provided with a mounting frame 41, the mounting frame 41 is located at one end of the motor 5 in the direction of the +X axis, the user can insert one end of the elastic member 3 provided with the inclined section 321 into the space between the motor 5 and the mounting frame 41, so that the first fitting section 322 fits with the outer wall of the motor 5, and the second fitting section 312 fits with the side wall of the mounting frame 41 facing the motor 5. The fixed section 311 and the second fitting section 312 can be at a right angle, and the fixed section 311 and the mounting frame 41 can be fixedly connected through fasteners 7, adhesion, buckling or other modes. Of course, the fixed section 311 and the second fitting section 312 can also be at an acute angle or an obtuse angle according to the structure of the mounting frame 41.

[0058] Of course, in other embodiments, the elastic member 3 can also be provided as a spring, a silicone rubber member or other elements with elasticity according to needs, and the embodiments of the present application do not make specific limitations here.

[0059] As shown in the figure, Figure 1As shown, the utility model embodiment further provides a kind of camera, including the synchronous belt tensioning mechanism of above described. Specifically, camera further includes lens (not shown in drawing), shell 4, motor 5 and transmission assembly 6, wherein, motor 5 and transmission assembly 6 are located in shell 4, transmission assembly 6 includes first pulley 61, second pulley 62 and synchronous belt 63, first pulley 61 is connected with the output shaft of motor 5, second pulley 62 is connected with lens, and synchronous belt 63 is wound on first pulley 61 and second pulley 62.Electric motor 5 works, and the output shaft of motor 5 can drive first pulley 61 rotation, and first pulley 61 drives second pulley 62 rotation by synchronous belt 63, to adjust the shooting angle of lens by second pulley 62 lens rotation.The synchronous belt tensioning mechanism can pre-tension synchronous belt 63 during assembly process, and realize the accurate control of the tension of synchronous belt 63, to guarantee the service life of motor 5, prevent synchronous belt 63 from relaxation by long time movement abrasion simultaneously, avoid the phenomenon such as tooth skipping, tooth shedding, guarantee equipment normal work.

[0060] The technical features of the above embodiments can be combined arbitrarily, and to make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0061] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as the limitation of the patent application scope. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A synchronous belt tensioning mechanism for installation in a housing (4), characterized in that The utility model relates to a motor support (1) for installing motor (5), the motor support (1) is equipped with the guide slot (11) along the extension of preset direction, and the preset direction is perpendicular with the axis of output shaft of motor (5); Limiting component (2) including fixed part (21), guide post (22) and limiting part (23), the fixed part (21) is used to set up in the casing (4), the guide post (22) protrudes to the side of fixed part (21) towards motor support (1) and is arranged with the guide slot (11) correspondingly, the guide post (22) can slide in the guide slot (11) along the preset direction, the limiting part (23) is fixedly connected with the guide post (22) on the side of motor support (1) away from the fixed part (21), and the limiting part (23) and the fixed part (21) are respectively positioned on the both sides of motor support (1) and limit motor support (1);And, Resilient part (3) is equipped in one end of motor (5) along the preset direction, and the both ends of resilient part (3) are used to abut with casing (4) and motor (5) respectively. The one end of guide post (22) towards motor support (1) is equipped with threaded hole (221), and the limiting part (23) includes thread part (231) and limiting part (232) connected with each other, the thread part (231) is fixed with the threaded hole (221) through thread cooperation, and the size of limiting part (232) is greater than the size of guide slot (11) along the direction parallel to the axis of output shaft of motor (5).

2. The synchronous belt tensioning mechanism of claim 1, wherein, The motor support (1) is parallel to the axis of output shaft of motor (5).

3. The synchronous belt tensioning mechanism of claim 1, wherein, The number of guide slot (11) is at least two, and at least two guide slots (11) are respectively located on the both sides of motor (5) along the preset direction.

4. The synchronous belt tensioning mechanism of claim 1, wherein, The resilient part (3) is set as a spring sheet, the spring sheet includes a fixed part (31) and a resilient part (32), the fixed part (31) is used for fixedly connected with the casing (4), one end of the resilient part (32) is connected with the fixed part (31), and the other end is used for abutting with the motor (5).

5. The synchronous belt tensioning mechanism of claim 1, wherein, The resilient part (32) includes an inclined section (321) and a first fitting section (322), both ends of the inclined section (321) are connected with the fixed part (31) and the first fitting section (322) respectively, and the first fitting section (322) is used for fitting with the outer wall of the motor (5).

6. The synchronous belt tensioning mechanism of claim 5, wherein, The fixed part (31) includes a fixed section (311) and a second fitting section (312), both ends of the second fitting section (312) are connected with the fixed section (311) and the inclined section (321) respectively, the second fitting section (312) is used for fitting with the inner wall of the casing (4), and the fixed section (311) is used for fixedly connected with the casing (4).

7. The synchronous belt tensioning mechanism of claim 6, wherein, The fixed part (31) and the resilient part (32) are integrally formed.

8. The synchronous belt tensioning mechanism of claim 5, wherein, ​ 9. The synchronous belt tensioning mechanism of claim 1, wherein, The motor support (1) is further provided with a fixing hole (12) extending along a preset direction, and the fixing member (21) is provided with an avoiding hole (211) corresponding to the fixing hole (12).

10. A video camera characterized by comprising: A synchronous belt tensioning mechanism comprising a tensioning member (1) according to any one of claims 1 to 9.

Images