Bevel gear transmission mechanism for photography slide rail and photography slide rail

Abstract

The utility model discloses a bevel gear transmission mechanism for a photography slide rail and the photography slide rail, and relates to the technical field of mobile photography equipment, the bevel gear transmission mechanism comprises a first rotating shaft and a first bevel gear coaxially arranged on the first rotating shaft, and the first bevel gear is movably arranged in the axial direction of the first rotating shaft; the second bevel gear is coaxially arranged on the second rotating shaft, and the second bevel gear is meshed with the first bevel gear; the gap adjusting assembly comprises an elastic piece and an adjusting positioning piece; the elastic piece is arranged on the side, away from the second bevel gear, of the first bevel gear. The adjusting positioning piece is movably arranged on the first rotating shaft and located on the side, away from the first bevel gear, of the elastic piece. And the adjustment indication structure is arranged on the first rotating shaft and is arranged corresponding to the movable area of the adjustment positioning piece so as to correspond to the position of the adjustment positioning piece. The adjusting positioning piece can be conveniently adjusted to a proper position according to the adjusting indication structure, so that the transmission gap is reduced, and the influence of the transmission gap is improved.

Description

Technical Field

[0001] The present application relates to the technical field of mobile photographic equipment, and particularly relates to a bevel gear transmission mechanism and a photographic slide rail for a photographic slide rail. Background Art

[0002] A photographic slide rail is a mobile photographic auxiliary equipment, which is often used in the process of film and television photography. A photographic slide rail with two or more axes can provide a translational motion of a camera along the track axis and a rotational motion around the heading axis. The camera can take more rich motion pictures through translation and rotation.

[0003] During photography, the requirement for the rotation accuracy of the camera around the heading axis is usually relatively high. If there is a transmission gap in the rotation transmission mechanism of the photographic slide rail, it will cause the camera to have a rotational angle movement space during rotation, which is likely to cause the captured picture to shake and affect the shooting effect. Therefore, a rotation transmission mechanism capable of reducing the transmission gap is needed. Utility Model Content

[0004] In order to improve the problem that the shooting effect is affected by the transmission gap of the rotation transmission mechanism, the present application provides a bevel gear transmission mechanism and a photographic slide rail for a photographic slide rail that can reduce the transmission gap.

[0005] According to a first aspect, in one embodiment, a bevel gear transmission mechanism for a photographic slide rail is provided, including:

[0006] A first rotating shaft and a first bevel gear coaxially arranged on the first rotating shaft, the first bevel gear is axially movably arranged along the first rotating shaft;

[0007] A second rotating shaft and a second bevel gear coaxially arranged on the second rotating shaft, the second bevel gear meshes with the first bevel gear;

[0008] A clearance adjusting assembly, the clearance adjusting assembly includes an elastic member and an adjusting and positioning member; the elastic member is arranged on a side of the first bevel gear away from the second bevel gear for applying an elastic force along the axial direction of the first rotating shaft to the first bevel gear to approach the second bevel gear; the adjusting and positioning member is movably arranged on the first rotating shaft and is located on a side of the elastic member away from the first bevel gear, and the adjusting and positioning member is used for moving and fixing along the axial direction of the first rotating shaft to adjust the elastic force applied by the elastic member to the first bevel gear;

[0009] And an adjustment indicating structure, the adjustment indicating structure is arranged on the first rotating shaft and is arranged corresponding to the moving area of the adjustment and positioning member to form a correspondence with the position of the adjustment and positioning member.

[0010] In one embodiment, the elastic member is a spring.

[0011] In one embodiment, the adjustment indicating structure is an elastic force indicating scale for indicating the elastic force of the elastic member corresponding to the position where the adjustment positioning member is located.

[0012] In one embodiment, the elastic member is a compression spring, and the compression spring is sleeved on the first rotating shaft.

[0013] In one embodiment, the adjustment positioning member is a sleeve sleeved on the first rotating shaft, and the sleeve is in threaded connection with the first rotating shaft.

[0014] In one embodiment, the sleeve includes a smooth hole section and an internal thread section. The inner diameter of the smooth hole section is smaller than that of the internal thread section. The first rotating shaft includes an external thread section and a sliding section. The external thread section is in threaded connection with the internal thread section. The smooth hole section is sleeved on the sliding section, and the elastic member abuts against the end face of the smooth hole section.

[0015] In one embodiment, a positioning and locking member is provided on the smooth hole section, and the positioning and locking member is used to lock the sleeve on the first rotating shaft.

[0016] In one embodiment, the positioning and locking member is a set screw. A threaded through hole is provided on the smooth hole section along the radial direction of the sleeve. The set screw is threadedly installed in the threaded through hole. One end of the set screw can abut against the peripheral wall of the sliding section to lock the position of the sleeve on the first rotating shaft.

[0017] In one embodiment, the second bevel gear is axially movably arranged on the second rotating shaft along the axial direction of the second rotating shaft. A clearance adjusting assembly and an adjustment indicating structure are also provided on the second rotating shaft. The setting manners of the clearance adjusting assembly and the adjustment indicating structure on the second rotating shaft are the same as those on the first rotating shaft.

[0018] According to a second aspect, in one embodiment, a photographic slide rail is provided, which includes a heading axis for mounting a camera and the bevel gear transmission mechanism according to any one of the above embodiments. The heading axis is in transmission connection with the bevel gear transmission mechanism.

[0019] For the bevel gear transmission mechanism for a photographic slide rail according to the above embodiments, by cooperating with the adjustment positioning member, the elastic member and the adjustment indicating structure, the adjustment positioning member can be adjusted to a suitable position with reference to the adjustment indicating structure, so that the elastic member applies an appropriate elastic force to the first bevel gear, so that the first bevel gear moves to a position where it is in non-clearance contact with the second bevel gear, avoiding excessive elastic force caused by blind adjustment resulting in gear wear or insufficient elastic force causing inaccurate transmission; it can also conveniently meet the elastic force adjustment requirements in different application scenarios.

[0020] According to the photographic slide rail of the above embodiment, by using the bevel gear transmission mechanism of the above embodiment, the influence of the transmission clearance can be effectively avoided, which helps to improve the shooting effect. Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of a bevel gear transmission mechanism of an embodiment;

[0022] Figure 2 It is a sectional view structure diagram of a bevel gear transmission mechanism of an embodiment;

[0023] Figure 3 It is a schematic diagram of the overall structure of a photographic slide rail of an embodiment;

[0024] Figure 4 It is a partial sectional view schematic diagram of a photographic slide rail of an embodiment.

[0025] In the figure, 100, the first rotating shaft; 110, the first bevel gear; 111, the guiding groove; 1111, the socket; 120, the guiding key; 130, the external thread section; 140, the sliding section;

[0026] 200, the second rotating shaft; 210, the second bevel gear; 220, the fastener;

[0027] 300, the clearance adjusting component; 310, the elastic component; 320, the adjusting and positioning component; 321, the sleeve; 3211, the light hole section; 3212, the internal thread section; 3213, the threaded through hole; 322, the positioning and locking component;

[0028] 400, the adjusting and indicating structure;

[0029] 500, the track shaft;

[0030] 600, the sliding table; 610, the heading axis; 620, the heading axis turntable connecting component;

[0031] 700, the synchronous belt; 710, the first synchronous pulley; 720, the second synchronous pulley. Detailed Embodiment

[0032] The present application will be further described in detail below in conjunction with the accompanying drawings through specific embodiments. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification in order to avoid overwhelming the core part of the present application with excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and general technical knowledge in the art.

[0033] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and drawings are only for clearly describing a certain embodiment and do not mean that they are necessary sequences, unless it is stated otherwise that a certain sequence must be followed.

[0034] The serial numbers assigned to the components in this article, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The terms "connection" and "coupling" used in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0035] For a multi-axis photographic slide rail with two or more axes, in addition to the translational movement along the track axis 500, the camera can also have a rotational movement around the yaw axis 610 (refer to Figure 3 ). Photographic operations usually have relatively high requirements for the rotational accuracy of the camera around the yaw axis 610. For a photographic slide rail that drives the rotation of the yaw axis 610 using a bevel gear drive method, due to manufacturing errors, installation errors, etc., there are actually transmission clearances in the bevel gear drive mechanism. In addition, surface wear of the bevel gears during long-term use will also cause clearances. These clearances will reduce the transmission accuracy of the bevel gear drive, allowing the camera to have a certain rotational angle movement space during rotation, which easily causes the captured image to shake and affects the shooting effect.

[0036] In the embodiment of the present application, the bevel gear transmission mechanism cooperates with each other by setting the adjustment positioning member 320, the elastic member 310 and the adjustment indication structure 400. When in use, the adjustment positioning member 320 can be adjusted to a suitable position in accordance with the adjustment indication structure 400, so that the elastic member 310 drives the first bevel gear 110 to move to a position of gapless contact with the second bevel gear 210, avoiding excessive elastic force caused by blind adjustment to cause gear wear or insufficient elastic force to cause inaccurate transmission; and the axial force of the first bevel gear 110 can be conveniently quantitatively adjusted according to different axial force requirements, which helps to adapt to the adjustment requirements in different application scenarios. In addition, the setting of the elastic member 310 also helps to automatically compensate for the gap caused by surface wear during the use of the bevel gear.

[0037] In one embodiment, a bevel gear transmission mechanism for a photographic slide is disclosed, please refer to Figure 1 and Figure 2 The bevel gear transmission mechanism includes: a first rotating shaft 100, a first bevel gear 110, a second rotating shaft 200, a second bevel gear 210, a gap adjustment component 300 and an adjustment indication structure 400.

[0038] In one embodiment, please refer to Figure 1 and Figure 2 The first bevel gear 110 is coaxially disposed on the first rotating shaft 100 , and the first bevel gear 110 is movably disposed along the axial direction of the first rotating shaft 100 . The second bevel gear 210 is coaxially disposed on the second rotating shaft 200 , and the second bevel gear 210 is meshed with the first bevel gear 110 .

[0039] For some examples, please refer to Figure 1 and Figure 2 , the first rotating shaft 100 and the second rotating shaft 200 are arranged vertically, and the first bevel gear 110 and the second bevel gear 210 are arranged as straight bevel gears. The first bevel gear 110 is movably sleeved on one end of the first rotating shaft 100 close to the second rotating shaft 200, and the second bevel gear 210 is fixedly sleeved on one end of the second rotating shaft 200 close to the first rotating shaft 100. In other embodiments, the first bevel gear 110 and the second bevel gear 210 can also be arranged as spiral bevel gears or other types of bevel gears, and the angle between the first rotating shaft 100 and the second rotating shaft 200 can also be other angles such as 60°, 75°, etc., and the transmission can be coordinated with the matching first bevel gear 110 and the second bevel gear 210.

[0040] For the movable arrangement of the first bevel gear 110, for example, please refer to Figure 2, a guiding key 120 is embedded on the circumferential wall of the first rotating shaft 100. The guiding key 120 is arranged along the axial direction of the first rotating shaft 100. A guiding groove 111 adapted to the guiding key 120 is provided on the inner wall of the first bevel gear 110. One end of the guiding groove 111 penetrates through the end wall of the first bevel gear 110 to form an insertion opening 1111 for the guiding key 120 to be inserted. During assembly, the first bevel gear 110 is sleeved on the first rotating shaft 100, and the guiding key 120 is inserted into the guiding groove 111 from the insertion opening 1111. In this way, the first bevel gear 110 can not only move axially along the first rotating shaft 100 but also rotate synchronously with the first rotating shaft 100 to transmit torque. Of course, a spline or other movable setting methods that can meet the design and use requirements can also be adopted between the first bevel gear 110 and the first rotating shaft 100.

[0041] For the fixed setting method of the second bevel gear 210, by way of example, please refer to Figure 2 , the second bevel gear 210 is sleeved on the second rotating shaft 200. A fastener 220 penetrating through the second bevel gear 210 can be provided on the side wall of the second bevel gear 210. One end of the fastener 220 passes through the second bevel gear 210 and abuts against the second rotating shaft 200 to fix the second bevel gear 210 to the second rotating shaft 200. In other examples, an interference fit can also be made between the second bevel gear 210 and the second rotating shaft 200 to make the second bevel gear 210 and the second rotating shaft 200 relatively fixed. Of course, a fastener 220 can also be further added for fixation to improve the fixation effect. In addition, the second bevel gear 210 can also be fixed to the second rotating shaft 200 by other fixed methods that can meet the design and use requirements.

[0042] It should be specifically noted that in some embodiments, the first rotating shaft 100 can be used to be connected to a power source such as a motor that can output rotational motion, that is, as the driving rotating shaft, while the second rotating shaft 200 is used as the driven rotating shaft and is driven to rotate by the first rotating shaft 100 by means of the first bevel gear 110 and the second bevel gear 210. In other embodiments, the second rotating shaft 200 can also be set as the driving rotating shaft and the first rotating shaft 100 as the driven rotating shaft, and the second rotating shaft 200 drives the first rotating shaft 100 to rotate. That is to say, the first bevel gear 110 can be arranged on the driving rotating shaft or the driven rotating shaft. Whether it is arranged on the driving rotating shaft or the driven rotating shaft, it does not prevent the adjustment of the first bevel gear 110.

[0043] In one embodiment, please refer to Figure 1 and Figure 2, the clearance adjustment assembly 300 includes an elastic member 310 and an adjustment positioning member 320; the elastic member 310 is disposed on a side of the first bevel gear 110 away from the second bevel gear 210, and is configured to apply an elastic force to the first bevel gear 110 to approach the second bevel gear 210 along the axial direction of the first rotating shaft 100; the adjustment positioning member 320 is movably disposed on the first rotating shaft 100 and is located on a side of the elastic member 310 away from the first bevel gear 110, and the adjustment positioning member 320 is configured to move and be fixed along the axial direction of the first rotating shaft 100 to adjust the elastic force applied by the elastic member 310 to the first bevel gear 110. During use, by adjusting the position of the adjustment positioning member 320, the magnitude of the elastic force applied by the elastic member 310 to the first bevel gear 110 can be changed, so that the first bevel gear 110 can approach or move away from the second bevel gear 210 as needed to achieve the effect of adjusting the transmission clearance. Moreover, the setting of the elastic member 310 also helps to automatically compensate for the clearance generated by surface wear during the use of the bevel gear, and helps to reduce the maintenance frequency of the bevel gear transmission mechanism.

[0044] In one embodiment, please refer to Figure 1 and Figure 2 , the adjustment positioning member 320 is a sleeve 321 sleeved on the first rotating shaft 100, and the sleeve 321 is threadedly connected to the first rotating shaft 100, and stepless adjustment of the position on the first rotating shaft 100 can be achieved.

[0045] In one embodiment, please refer to Figure 1 and Figure 2 , the elastic member 310 is clamped between the adjustment positioning member 320 and the first bevel gear 110, and the elastic member 310 can be a spring, for example: a compression spring or a disc spring. In other embodiments, the elastic member 310 can also be a tension spring, a rubber pad or other elastic parts that can provide appropriate elastic force.

[0046] In some embodiments, please refer to Figure 1 and Figure 2 , the elastic member 310 is a compression spring, the compression spring is sleeved on the first rotating shaft 100, one end of the compression spring abuts against the sleeve 321, and the other end abuts against the first bevel gear 110. The first rotating shaft 100 can guide the compression spring to prevent the compression spring from bending after being compressed or during rotation, which affects the magnitude of the elastic force applied to the first bevel gear 110, and helps to improve the adjustment stability. In some other embodiments, the compression spring can also be disposed on the radial outside of the first rotating shaft 100 along the axial direction of the first rotating shaft 100, and both ends of the compression spring can respectively abut against the sleeve 321 and the first bevel gear 110 to apply an elastic force to the first bevel gear 110.

[0047] In some other embodiments, the adjustment positioning member 320 may also be a shrink sleeve. The shrink sleeve includes a cylinder body and a screw sleeve. The cylinder body has a reduced-diameter end. A reduced-diameter gap is provided along the axial direction of the cylinder body on the peripheral wall of the reduced-diameter end. The screw sleeve is sleeved outside the reduced-diameter end and is threadedly connected to the reduced-diameter end. When the screw sleeve is tightened, the inner diameter of the reduced-diameter end decreases to tightly hold and fix to the first rotating shaft 100. In other embodiments, the adjustment positioning member 320 may also be arranged in other structural forms as long as it can meet the design and use requirements.

[0048] When the first bevel gear 110 rotates, the second bevel gear 210 will apply a load to the first bevel gear 110, resulting in an axial force in the direction of the adjustment positioning member 320. The magnitude of the generated axial force is related to the load and can be calculated from the load magnitude. To ensure that the first bevel gear 110 and the second bevel gear 210 maintain gapless contact during transmission, it is necessary to make the axial force insufficient to cause the first bevel gear 110 to shift, that is, to ensure that the elastic force applied by the elastic member 310 to the first bevel gear 110 is greater than the axial force. Therefore, in one embodiment, please refer to Figure 1 and Figure 2 , the adjustment indication structure 400 is arranged on the first rotating shaft 100 and corresponding to the active area of the adjustment positioning member 320 to form a correspondence with the position of the adjustment positioning member 320.

[0049] The arrangement of the adjustment indication structure 400 can provide a reference for the user during adjustment. Before adjustment, the user can calculate the required adjustment amount according to the magnitude of the load and make adjustments with reference to the adjustment indication structure 400, so that the elastic member 310 can apply an appropriate magnitude of elastic force to the first bevel gear 110, which helps to avoid the situation of excessive elastic force causing gear wear or insufficient elastic force causing inaccurate transmission during blind adjustment, improving the adjustment accuracy and the adjustment quality.

[0050] In one embodiment, please refer to Figure 1 and Figure 2, the adjustment indication structure 400 is an elastic force indication scale. For example, N or kgf, etc. can be used as the unit of the scale value to indicate the elastic force of the elastic member 310 corresponding to the position where the adjustment positioning member 320 is located. Exemplarily, the elastic member 310 can be a compression spring or a disc spring, etc., whose deformation amount is proportional to the external force received. The elastic force indication scale is arranged on the peripheral wall of the first rotating shaft 100 along the axial direction of the first rotating shaft 100. In this way, during adjustment, the adjustment positioning member 320 can be directly adjusted to the required elastic force position according to the indication of the elastic force indication scale, so that the elastic member 310 exerts an elastic force of the size indicated by the elastic force indication scale on the first bevel gear 110, facilitating intuitive adjustment. Of course, in other embodiments, the adjustment indication structure 400 can also be a position indication scale. For example, mm, etc. can be used as the unit of the scale value. The position indication scale can be used to indicate the position where the adjustment positioning member 320 is located, and can also be used to indicate the deformation size of the elastic member 310 corresponding to the position where the adjustment positioning member 320 is located. Before adjustment, the user can first calculate the required deformation size of the elastic member 310 according to the required elastic force, and then adjust according to the calculation result.

[0051] In order to enable the sleeve 321 to be aligned with the elastic force indication scale when it is screwed into place during installation, in one embodiment, please refer to Figure 2 , the sleeve 321 includes a light hole section 3211 and an internal thread section 3212. The inner diameter of the light hole section 3211 is smaller than the inner diameter of the internal thread section 3212. The first rotating shaft 100 includes an external thread section 130 and a sliding section 140. The external thread section 130 is threadedly connected to the internal thread section 3212. The light hole section 3211 is sleeved on the sliding section 140. The elastic member 310 abuts against the end face of the light hole section 3211.

[0052] Exemplarily, the first bevel gear 110 is arranged on the side of the sliding section 140 away from the external thread section 130. The outer diameter of the external thread section 130 is larger than the outer diameter of the sliding section 140, so that a step surface is formed between the external thread section 130 and the sliding section 140. The elastic force indication scale can be arranged on the external thread section 130 or on the side of the external thread section 130 away from the sliding section 140. The light hole section 3211 is sleeved on the sliding section 140. The internal thread section 3212 is located on the side of the light hole section 3211 away from the first bevel gear 110 and is threadedly connected to the external thread section 130. The inner diameter of the light hole section 3211 is smaller than the inner diameter of the internal thread section 3212, so that a step surface is also formed on the inner wall of the sleeve 321. In this way, when the step surface of the sleeve 321 abuts against the step surface of the first rotating shaft 100, the position of the sleeve 321 is fixed, and the elastic force indication scale can be marked with this position as the characteristic position. For example, it can be used as the scale "zero point", which not only facilitates adjustment but also helps to improve the adjustment accuracy.

[0053] In one embodiment, please refer to Figure 2, a positioning and locking member 322 can be provided on the light hole section 3211 to lock the sleeve 321 to the first rotating shaft 100, so as to prevent the sleeve 321 from loosening during the transmission process and affecting the adjustment effect.

[0054] In some embodiments, please refer to Figure 2 , the positioning and locking member 322 can be a set screw. A threaded through hole 3213 is provided on the light hole section 3211 along the radial direction of the sleeve 321. The set screw is threadedly installed in the threaded through hole 3213. One end of the set screw can abut against the peripheral wall of the sliding section 140 to lock the position of the sleeve 321 on the first rotating shaft 100. When the position of the sleeve 321 needs to be adjusted, first turn the set screw to separate the set screw from the peripheral wall of the sliding section 140, then rotate and adjust the position of the sleeve 321. After the sleeve 321 is adjusted in place, turn the set screw back to its original position so that the set screw abuts tightly against the peripheral wall of the first rotating shaft 100. In some other embodiments, the positioning and locking member 322 can also be other structures or components that meet the design and use requirements. For example, the positioning and locking member 322 can be a nut or a shrink sleeve sleeved on the external thread section 130 and abutting against the end face of the internal thread section 3212.

[0055] In addition, in one embodiment, the second bevel gear 210 can also be movably arranged along the axial direction of the second rotating shaft 200 on the second rotating shaft 200. A clearance adjusting assembly 300 and an adjustment indicating structure 400 are also provided on the second rotating shaft 200. Both the first bevel gear 110 and the second bevel gear 210 are movably arranged, and the clearance adjusting assembly 300 and the adjustment indicating structure 400 are provided in a matching manner, which helps to expand the range of transmission clearances that can be adjusted and eliminated by the bevel gear transmission mechanism, and is beneficial to improving the versatility of the bevel gear transmission mechanism.

[0056] In some embodiments, the clearance adjusting assembly 300 and the adjustment indicating structure 400 are arranged on the second rotating shaft 200 in the same way as on the first rotating shaft 100. For example: the clearance adjusting assembly 300 includes an elastic member 310 and an adjustment positioning member 320. The adjustment positioning member 320 is a sleeve 321 sleeved on the second rotating shaft 200. The sleeve 321 is threadedly connected to the second rotating shaft 200. The elastic member 310 is a compression spring. The compression spring is sleeved on the second rotating shaft 200. One end of the compression spring abuts against the sleeve 321, and the other end abuts against the second bevel gear 210. The adjustment indicating structure 400 is an elastic force indicating scale, and the elastic force indicating scale is arranged on the peripheral wall of the second rotating shaft 200 along the axial direction of the second rotating shaft 200.

[0057] Of course, in some other embodiments, the clearance adjusting assembly 300 and the adjustment indicating structure 400 can also be arranged on the second rotating shaft 200 in a setting manner different from that on the first rotating shaft 100, and any setting manner that can meet the design and use requirements is acceptable.

[0058] It should be particularly noted that although the bevel gear transmission mechanism in the above embodiments is designed to meet the usage requirements of a photographic slide rail, it is not limited to being used only with photographic slide rails. This bevel gear transmission mechanism is also applicable to other photographic equipment and other structures, devices or equipment that require a direction-changing transmission function. The application of the bevel gear transmission mechanism in other fields is also within the protection scope of this application.

[0059] In an embodiment of a photographic slide rail, please refer to Figure 3 and Figure 4 , which includes a heading axis 610 for mounting a camera and the bevel gear transmission mechanism of any of the above embodiments. The heading axis 610 is in transmission connection with the bevel gear transmission mechanism. The camera mounted on the heading axis 610 can refer to an independent camera or a camera kit equipped with accessories such as a fill light and a lens hood.

[0060] In one embodiment, please refer to Figure 3 and Figure 4 , the photographic slide rail includes a track axis 500 and a slide table 600. The slide table 600 is slidably arranged on the track axis 500 and can slide along the axial direction of the track axis 500. The slide table 600 is provided with a heading axis 610, a heading axis turntable connecting member 620 and a bevel gear transmission mechanism. Among them, the heading axis 610 is fixedly arranged on the slide table 600, and the heading axis turntable connecting member 620 is rotatably sleeved outside the heading axis 610. The bevel gear transmission mechanism is arranged on one side of the heading axis turntable connecting member 620. And the second rotating shaft 200 is arranged side by side with the heading axis turntable connecting member 620. A first synchronous pulley 710 is sleeved on the second rotating shaft 200, and a second synchronous pulley 720 is sleeved on the heading axis turntable connecting member 620. A synchronous belt 700 is wound around the first synchronous pulley 710 and the second synchronous pulley 720 together, so that when the second rotating shaft 200 rotates, it can drive the heading axis turntable connecting member 620 to rotate, and then drive the camera connected to the heading axis turntable connecting member 620 to rotate.

[0061] The above uses specific examples to elaborate on this application, which is only used to help understand this application and is not intended to limit this application. For those skilled in the technical field to which this application belongs, according to the idea of this application, several simple deductions, deformations or substitutions can also be made.

Claims

1. A bevel gear transmission mechanism for a photographic slide rail, characterized in that, include: A first rotating shaft and a first bevel gear coaxially arranged on the first rotating shaft, wherein the first bevel gear is movably arranged along the axial direction of the first rotating shaft; a second rotating shaft, and a second bevel gear coaxially arranged on the second rotating shaft, wherein the second bevel gear is meshed with the first bevel gear; A clearance adjustment component, the clearance adjustment component comprising an elastic member and an adjustment positioning member; the elastic member is arranged on a side of the first bevel gear away from the second bevel gear, and is used to apply an elastic force to the first bevel gear along the axial direction of the first rotating shaft to approach the second bevel gear; the adjustment positioning member is movably arranged on the first rotating shaft and is located on a side of the elastic member away from the first bevel gear, and the adjustment positioning member is used to move and be fixed along the axial direction of the first rotating shaft to adjust the elastic force applied by the elastic member to the first bevel gear; and an adjustment indicating structure, wherein the adjustment indicating structure is arranged on the first rotating shaft and is arranged corresponding to the active area of the adjustment positioning member to correspond to the position of the adjustment positioning member.

2. The bevel gear transmission mechanism according to claim 1, characterized in that, The elastic member is a spring.

3. The bevel gear transmission mechanism according to claim 2, characterized in that The adjustment indicating structure is an elastic force indicating scale, which is used to indicate the elastic force of the elastic member corresponding to the position of the adjustment positioning member.

4. The bevel gear transmission mechanism according to claim 2, characterized in that, The elastic member is a compression spring, and the compression spring is sleeved on the first rotating shaft.

5. The bevel gear transmission mechanism according to any one of claims 1-4, characterized in that, The adjustment positioning member is a sleeve sleeved on the first rotating shaft, and the sleeve is threadedly connected to the first rotating shaft.

6. The bevel gear transmission mechanism according to claim 5, characterized in that The sleeve includes a light hole section and an internal thread section, the inner diameter of the light hole section is smaller than the inner diameter of the internal thread section, the first rotating shaft includes an external thread section and a sliding section, the external thread section is threadedly connected to the internal thread section, the light hole section is sleeved on the sliding section, and the elastic member abuts against the end face of the light hole section.

7. The bevel gear transmission mechanism according to claim 6, characterized in that, The light hole section is provided with a positioning locking piece, and the positioning locking piece is used to lock the sleeve on the first rotating shaft.

8. The bevel gear transmission mechanism according to claim 7, characterized in that, The positioning locking member is a set screw. A threaded through hole is provided on the optical hole section along the radial direction of the sleeve. The set screw is threadedly installed in the threaded through hole. One end of the set screw can abut against the peripheral wall of the sliding section to lock the position of the sleeve on the first rotating shaft.

9. The bevel gear transmission mechanism according to any one of claims 1-4, characterized in that, The second bevel gear is movably arranged on the second rotating shaft along the axial direction of the second rotating shaft. A gap adjustment component and an adjustment indication structure are also arranged on the second rotating shaft. The setting method of the gap adjustment component and the adjustment indication structure on the second rotating shaft is the same as that on the first rotating shaft.

10. The photographic slide rail is characterized in that, The invention comprises a panning axis for mounting a camera and a bevel gear transmission mechanism according to any one of claims 1 to 9, wherein the panning axis is in transmission connection with the bevel gear transmission mechanism.

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