Swing mechanism and equatorial telescope

Abstract

The utility model belongs to the technical field of astronomical observation equipment or photographic equipment, and relates to a rotary mechanism and an equatorial telescope, the rotary mechanism comprises a rotary body, a supporting part and a rolling part, the supporting part is movably connected to the rotary body, and the supporting part can rotate relative to the rotary body; the rotary body comprises a rotary body, a rotary connecting part is formed on the rotary body, a rolling part is arranged on the upper surface of the rotary connecting part, and / or a rolling part is arranged on the lower surface of the rotary connecting part; and the rolling part is positioned between the corresponding planes of the rotary connecting part and the supporting part. After the structure is adopted, the beneficial effects of compact structure, small size, good rotating effect and strong practicability are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of astronomical observation equipment or photographic equipment, and specifically relates to a rotary mechanism and an equatorial mount. Background Art

[0002] Equatorial mounts are widely used in astronomical observation and star photography. Due to the rotation and revolution of the earth, the position of celestial bodies in the sky is constantly changing. Equatorial mounts can track the movement of celestial bodies by rotating the right ascension axis, keeping the telescope, camera or other observation and recording equipment at a constant angle to the celestial body, making observation and recording more convenient.

[0003] An equatorial mount system generally includes: the equatorial mount body, the latitude mount, the tripod, the equipment bracket / pan-tilt head and various matching connectors. The latitude mount is a device used to set the latitude and direction of the observation site of the equatorial mount. The equatorial mount body is connected to the latitude mount. By adjusting the rotation and pitch of the latitude mount, it can be ensured that the right ascension axis / polar axis of the equatorial mount is correctly aligned with the earth's rotation axis. The latitude mount can be a relatively independent mechanism. It is generally connected to the equatorial mount body through dovetail grooves, screw holes, etc.; at the same time, the latitude mount can also be designed as an integrated whole with the equatorial mount body.

[0004] When using the equatorial mount, the user needs to rotate the latitude mount to point the polar axis of the equatorial mount accurately to the north or south of the earth, depending on the user's location. This step is to align the coordinate system of the equatorial mount with the coordinate system of the earth. In addition, the pitch of the latitude mount needs to be adjusted to the latitude of the observation site so that the right ascension axis / polar axis of the equatorial mount is correctly aligned with the rotation axis of the earth.

[0005] When using an equatorial mount, latitude mount, or similar device for azimuth adjustment, the direction angle is adjusted quickly but roughly to quickly and roughly align the device to a certain direction, such as north (when the user is in the northern hemisphere) or south (when the user is using it in the southern hemisphere); this usually occurs when setting up the device before starting work or when storing the device after finishing work. In addition, the user also needs to adjust the direction angle slowly but more accurately so that the user can adjust the direction angle to the required accuracy (usually accurate to the arc minute level).

[0006] When adjusting the azimuth angle of the existing equatorial mount or the latitude mount matched therewith, some devices use a sliding friction mechanism to realize the rotation function. This solution has a simple structure and low cost, but has a poor bearing capacity and cannot be conveniently and accurately adjusted. Therefore, it is necessary to make improvements. Utility Model Content

[0007] In order to solve the above problems in the prior art, the utility model provides a slewing mechanism and an equatorial mount, which have a compact structure, a strong bearing capacity and strong practicability.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] As one aspect of the utility model, a rotary mechanism is provided, which comprises: a rotary body, a support portion and a rolling portion, wherein the support portion is movably connected to the rotary body, and the support portion can rotate relative to the rotary body;

[0010] The rotating body comprises a rotating body, a rotating connecting portion is formed on the rotating body, a rolling portion is provided on the upper surface of the rotating connecting portion, and / or a rolling portion is provided on the lower surface of the rotating connecting portion;

[0011] The rolling portion is located between corresponding planes of the rotary connection portion and the support portion.

[0012] Optionally, the rolling part is a needle bearing.

[0013] Optionally, the support portion includes a base, on which is formed a swivel mounting groove that matches the swivel connecting portion of the swivel body; the swivel mounting groove is provided with a clearance hole that is communicated with the swivel mounting groove.

[0014] Optionally, a first cover plate is connected to the base, and when the rotating body is connected to the rotating installation groove, the first cover plate restricts the rotating body in the rotating installation groove.

[0015] Optionally, it further comprises a direction angle locking unit, wherein the direction angle locking unit is movably connected to the support portion; the direction angle locking unit cooperates with the rotating body;

[0016] The direction angle locking unit includes a clamping piece and a fastening piece, one end of the clamping piece is rotatably connected to the support part through a connecting shaft; the middle part of the fastening piece is threadedly connected to a nut piece provided on the support part; one end of the fastening piece cooperates with the clamping piece.

[0017] As an option, it also includes a speed adjustment unit, which is movably connected to the support part; the speed adjustment unit is used in conjunction with the rotating body;

[0018] The speed adjustment unit comprises a toggle member rotatably connected to a support portion, and a toggle member installation groove for installing the toggle member is provided on the support portion; the toggle member is connected to a direction angle follower of the rotating body.

[0019] Optionally, the speed adjustment unit further includes a parallel shaft gear reduction mechanism, through which the shifting member is connected to the angular direction follower of the rotating body, and the parallel shaft gear reduction mechanism makes the rotation direction of the shifting member opposite to the angular rotation direction of the rotating body.

[0020] Optionally, the parallel axis gear reduction mechanism includes a first gear, a second gear and a third gear, the first gear is rotatably connected to the support part through a first wheel axle, and the shifting member is connected to the first wheel axle; the second gear and the third gear are respectively rotatably connected to the support part, and the second gear is meshed with the first gear, the second gear is meshed with the third gear, and the third gear is meshed with the direction angle follower.

[0021] Optionally, a partition plate is connected to the toggle member installation groove, the first gear, the second gear, the third gear and the first wheel shaft are all connected to the partition plate, the partition plate divides the toggle member installation groove into a first installation area and a second installation area, the toggle member is located in the first installation area, and the parallel shaft gear reduction mechanism is located in the second installation area;

[0022] The toggle member installation groove is detachably connected to a second cover plate, and the second cover plate restricts the parallel axis gear reduction mechanism within a second installation area.

[0023] As another aspect of the present invention, an equatorial mount is provided, which comprises the swivel mechanism as described above.

[0024] The beneficial effects of the slewing mechanism and equatorial mount of the utility model are specifically embodied in the following aspects: 1. The slewing mechanism is used for adjusting the azimuth angle of the equatorial mount, and a parallel-axis gear reduction mechanism is used for adjusting the azimuth angle. By rotating the toggle piece, the azimuth angle can be accurately adjusted; 2. The rotation direction of the toggle piece is opposite to the direction of change of the azimuth angle, which is in line with the intuitive use and provides a better ergonomic experience; 3. The parallel-axis gear reduction mechanism can be driven in reverse, and the azimuth angle can be adjusted directly by holding the support part or the equatorial mount body without rotating the toggle piece; this method can quickly and roughly adjust the azimuth angle; 4. The azimuth angle locking unit applies pressure to the rotating body, thereby generating friction that hinders the rotation, so that the azimuth angle is locked; 5. The structure is compact, the volume is small, the rotation effect is good, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0026] Figure 1 This is a structural front view of the rotary mechanism of the utility model;

[0027] Figure 2 This is a rear structural view of the rotary mechanism of the utility model;

[0028] Figure 3 It is a bottom view of the structure of the rotary mechanism of the utility model;

[0029] Figure 4 It is a structural cross-sectional view of the rotary mechanism of the utility model;

[0030] Figure 5 The structural explosion of the rotary mechanism of the utility model Figure 1 ;

[0031] Figure 6 The structural explosion of the rotary mechanism of the utility model Figure 2 ;

[0032] Figure 7 This is a structural front view of the rotary body of the utility model;

[0033] Figure 8 It is a rear view of the structure of the rotary body of the utility model. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0035] A rotary mechanism according to an embodiment of the present application, such as Figure 1-Figure 4 As shown, it comprises: a rotating body 1, on which a support part 2 is movably connected, and the support part 2 is used for installing the equatorial mount body. It should be noted that the structure of the equatorial mount body is a prior art and will not be described in detail here; the support part 2 plays a supporting role, and the support part 2 can rotate horizontally relative to the rotating body 1; when in use, the tripod is detachably connected to the rotating body 1, such as: a threaded hole is provided on the rotating body 1, and the stud of the tripod is threadedly connected to the threaded hole to realize the detachable connection of the tripod;

[0036] In order to prevent dry friction between the support part 2 and the rotating body 1 during the rotation process, a rolling part 3 is also included, and the rolling part 3 is located between the planes where the rotating body 1 and the support part 2 are in contact; the rolling part 3 is a needle bearing, which is low in cost. Specifically, a needle bearing is provided on the upper surface of the rotating body 1, and / or a needle bearing is provided on the lower surface of the rotating body 1, and the center of the needle bearing coincides with the center of the rotating body 1; the needle bearing is movably connected with the support part 2, so that when the support part 2 is rotated relative to the rotating body 1 under the action of external force, it is more labor-saving and convenient, and is not affected by the weight of the equatorial mount body on the support part 2; because the support part 2 and the rotating body 1 generate a large axial force, while the radial force is low, the rolling part 3 is located between the horizontal planes where the rotating body 1 and the support part 2 are in contact, and this design solves this technical problem very well.

[0037] In one embodiment, if Figure 5-Figure 8 As shown, the rotating body 1 includes a rotating body 11, on which a rotating connection part 12 is formed, and the rotating connection part 12 is located in the middle of the rotating body 11; the supporting part 2 includes a base 21, on which a rotating mounting groove 22 is formed, which matches the rotating connection part 12 of the rotating body 1; a first cover plate 23 is connected to the base 21, and when the rotating body 1 is connected to the rotating mounting groove 22, the first cover plate 23 restricts the rotating body 1 in the rotating mounting groove 22; during specific installation, the rotating connection part 12 is located in the rotating mounting groove 22, and a clearance hole 24 is provided on the rotating mounting groove 22, and the clearance hole 24 is connected to the rotating mounting groove 22; the clearance hole 24 is used for the clearance of the rotating body 11 to facilitate the installation of the tripod.

[0038] In one embodiment, if Figure 7 and Figure 8 As shown, the upper surface and / or the lower surface of the rotary connection part 12 are respectively formed with a rolling part matching groove 121 for installing the rolling part 3, and correspondingly, the rotary installation groove 22 and the first cover plate 23 are respectively provided with a rolling part limiting groove 25 for limiting the rolling part 3, and the rolling part 3 is located between the corresponding planes of the rotary connection part 12 and the support part 2; Figure 5 As shown, the stability of the rolling portion 3 during movement is further enhanced.

[0039] In one embodiment, if Figure 1 and Figure 3 As shown, it also includes an angular direction locking unit 4, which is movably connected to the support part 2; the angular direction locking unit 4 cooperates with the rotating connection part 12 of the rotating body 1 to limit the relative position between the rotating body 2 and the support part 2, thereby preventing the support part 2 from rotating under the action of the rolling part 3 after it is in place.

[0040] In one embodiment, if Figure 5 and Figure 6 As shown, the direction angle locking unit 4 includes a pressing member 41, one end of which is rotatably connected to the support portion 2 through a connecting shaft 42, and a pressing member installation groove 43 for installing the pressing member 41 is provided on the support portion 2, and the pressing member installation groove 43 is communicated with the rotary installation groove 22, so as to facilitate the cooperation between the pressing member 41 and the rotary body 1;

[0041] It also includes a fastener 44, the middle part of which is threadedly connected to a nut 45 provided on the support part 2; one end of the fastener 44 cooperates with the pressing member 41, and the other end of the fastener 44 extends to the outside of the support part 2 and is connected to a knob 46;

[0042] The fixing member 44 is rotated. When the fixing member 44 moves inward relative to the supporting portion 2, the fixing member 44 squeezes the pressing member 41, driving the pressing member 41 to approach and abut against the rotating body 1 with the connecting shaft 42 as a fulcrum; when the fixing member 44 moves outward relative to the supporting portion 2, the pressing member 41 does not abut against the rotating body 1; an arc-shaped portion adapted to the rotating body 1 is formed on the pressing member 41, and the arc-shaped portion abuts against the rotating body 1 to achieve relative limiting between the rotating body 2 and the supporting portion 2.

[0043] When using an equatorial mount or similar device to make azimuth adjustments, there are several situations involved: Faster but coarser adjustments to the azimuth angle, so that the device can be quickly and roughly pointed in a certain direction, such as north (when the user is in the northern hemisphere) or south (when the user is using it in the southern hemisphere). This situation usually occurs when setting up the device before starting a job or when storing the device after a job. Slower but more precise adjustments to the azimuth angle so that the user can adjust the azimuth angle to the desired accuracy (usually accurate to the arc minute level).

[0044] Regarding the realization of the adjustment function, some equipment does not have a precision adjustment mechanism. This type of solution is convenient for quick and rough adjustment, but precise adjustment is difficult.

[0045] Therefore, in one embodiment, if Figure 1-Figure 6 As shown, it also includes a speed adjustment unit 5, which is movably connected to the support part 2; the speed adjustment unit 5 is used in conjunction with the rotating body 1; specifically, the speed adjustment unit 5 includes a toggle member 51 rotatably connected to the support part 2, and the toggle member 51 is a dial wheel, which will not be described in detail; the support part 2 is provided with a toggle member installation groove 52 for installing the toggle member 51, and the outer wall of the toggle member 51 is slightly exposed on the outside of the support part 2, which is convenient for operating the toggle member 51; the azimuth follower is an outer gear ring, which is fixedly connected to the rotating body 1, or the outer gear ring and the rotating body 1 are integrally formed; when the toggle member 51 works, it drives the azimuth follower 53 to rotate relative to each other, thereby realizing the relative rotation of the support part 2 and the rotating body 1, and finally realizing the adjustment of the azimuth angle of the equatorial mount body on the support part 2.

[0046] In one embodiment, if Figure 4 and Figure 5 As shown, the speed adjustment unit 5 also includes a parallel axis gear reduction mechanism 6, the shifting member 51 is connected to the direction angle follower 53 of the rotating body 1 through the parallel axis gear reduction mechanism 6, and the parallel axis gear reduction mechanism 6 makes the rotation direction of the shifting member 51 opposite to the direction angle rotation direction of the rotating body 1.

[0047] In one embodiment, the parallel axis gear reduction mechanism 6 includes a first gear 61, a second gear 62 and a third gear 63, wherein the first gear 61 is rotatably connected to the support portion 2 via a first wheel shaft 64, and the shifting member 51 is connected to the first wheel shaft 64; the second gear 62 and the third gear 63 are rotatably connected to the support portion 2, respectively, and the second gear 62 is meshed with the first gear 61, the second gear 62 is meshed with the third gear 63, and the third gear 63 is meshed with the direction angle follower 53. The first gear 61, the second gear 62, the third gear 63 and the direction angle follower 53 are all arranged in parallel, and the first gear 61, the second gear 62, the third gear 63 and the direction angle follower 53 constitute a preset reduction ratio. The third gear 63 is meshed with the angular direction follower 53 ; the first gear 61 , the second gear 62 , the third gear 63 and the angular direction follower 53 can realize reverse drive with respect to each other, that is, the coarse adjustment of the angular direction can be realized by operating only the support part 2 ; the fine adjustment of the angular direction can be realized by the toggle member 51 .

[0048] In one embodiment, in order to miniaturize the volume, Figure 5 As shown, a partition plate 7 is connected to the toggle member installation groove 52, and the first gear 61, the second gear 62, the third gear 63 and the first wheel shaft 64 are all connected to the partition plate 7. The partition plate 7 divides the toggle member installation groove 52 into a first installation area and a second installation area, respectively. The toggle member 51 is located in the first installation area, and the parallel axis gear reduction mechanism 6 is located in the second installation area, so as to prevent the damping oil in the parallel axis gear reduction mechanism 6 from contaminating the toggle member 51;

[0049] The toggle member mounting groove 52 is detachably connected to a second cover plate 71 , which restricts the parallel axis gear reduction mechanism 6 within a second mounting area. The second cover plate 71 and the first cover plate 23 are an integrated structure or a split structure, and the design is selected according to needs.

[0050] When the azimuth needs to be adjusted quickly, the azimuth locking unit 4 is in an unlocked state, and the support part 2 or the mount body on the support part 2 can be directly held to adjust the azimuth for quick coarse adjustment; when the azimuth needs to be adjusted precisely, the toggle member 51 is rotated, and the adjustment process becomes very precise through the parallel axis gear reduction mechanism 6;

[0051] When the direction angle adjustment is completed, the direction angle is locked by the direction angle locking unit 4, and at this time, ordinary external force cannot change the direction angle of the device;

[0052] Generally speaking, the axial load between the rotating body 1 and the supporting part 2 is greater than the radial load; using needle roller bearings to bear the axial load and using sliding friction bodies to bear the radial load saves costs compared to directly using cross roller bearings and can withstand greater loads than using only sliding friction mechanisms.

[0053] Another embodiment of the present application provides an equatorial mount, which includes the rotating mechanism as described above.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0055] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0056] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0057] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0058] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0059] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A rotary mechanism, characterized in that: It includes: A rotating body, a supporting part and a rolling part, wherein the supporting part is movably connected to the rotating body, and the supporting part can rotate relative to the rotating body; The rotating body comprises a rotating body, a rotating connecting portion is formed on the rotating body, a rolling portion is provided on the upper surface of the rotating connecting portion, and / or a rolling portion is provided on the lower surface of the rotating connecting portion; The rolling portion is located between corresponding planes of the rotary connection portion and the support portion.

2. The rotary mechanism according to claim 1, characterized in that: The rolling part is a needle bearing.

3. The rotary mechanism according to claim 1, characterized in that: The support part comprises a base, on which a swivel installation groove is formed to match the swivel connection part of the swivel body; the swivel installation groove is provided with a clearance hole, which is communicated with the swivel installation groove.

4. The rotary mechanism according to claim 3, characterized in that: The base is connected with a first cover plate. When the rotating body is connected to the rotating installation groove, the first cover plate restricts the rotating body in the rotating installation groove.

5. The rotary mechanism according to any one of claims 1 to 4, characterized in that: It also includes a direction angle locking unit, which is movably connected to the support part; the direction angle locking unit cooperates with the rotating body.

6. The rotary mechanism according to claim 5, characterized in that: The direction angle locking unit includes a clamping piece and a fastening piece, one end of the clamping piece is rotatably connected to the support part through a connecting shaft; the middle part of the fastening piece is threadedly connected to a nut piece provided on the support part; one end of the fastening piece cooperates with the clamping piece.

7. The rotary mechanism according to any one of claims 1 to 4, characterized in that: It also includes a speed adjustment unit, which is movably connected to the support portion; the speed adjustment unit is used in conjunction with the rotating body; The speed adjustment unit includes a toggle member rotatably connected to a support portion, and the support portion is provided with a toggle member installation groove for installing the toggle member; The speed adjustment unit also includes a parallel shaft gear reduction mechanism, through which the toggle member is connected to the angular direction follower of the rotating body, and the parallel shaft gear reduction mechanism makes the rotation direction of the toggle member opposite to the angular rotation direction of the rotating body.

8. The rotary mechanism according to claim 7, characterized in that: The parallel axis gear reduction mechanism includes a first gear, a second gear and a third gear. The first gear is rotatably connected to the support part through the first wheel axle, and the shifting member is connected to the first wheel axle; the second gear and the third gear are rotatably connected to the support part respectively, and the second gear is meshed with the first gear, the second gear is meshed with the third gear, and the third gear is meshed with the direction angle follower.

9. The rotary mechanism according to claim 8, characterized in that: A partition plate is connected in the toggle member installation groove, and the first gear, the second gear, the third gear and the first wheel shaft are all connected to the partition plate. The partition plate divides the toggle member installation groove into a first installation area and a second installation area respectively. The toggle member is located in the first installation area, and the parallel shaft gear reduction mechanism is located in the second installation area. The toggle member installation groove is detachably connected to a second cover plate, and the second cover plate restricts the parallel axis gear reduction mechanism within a second installation area.

10. An equatorial mount, characterized in that: It comprises a slewing mechanism as claimed in any one of claims 1 to 9.

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