Driving structure and equatorial telescope

Abstract

The utility model belongs to the technical field of astronomical observation equipment, and relates to a driving structure and an equatorial telescope. The right ascension axis unit is rotationally connected to the supporting part; the driving unit is movably connected to the supporting part, and the driving unit is matched with or separated from the right ascension axis unit; when the driving unit is matched with the right ascension axis unit, the driving unit drives the right ascension axis unit to rotate on the supporting part; when the driving unit is separated from the right ascension axis unit, the driving unit is not connected with the right ascension axis unit, and the right ascension axis unit can freely rotate on the supporting part. After the structure is adopted, the driving structure has the advantages of being light in overall weight, small in overall size, regular in appearance, convenient to store and high in practicability.

Description

Technical Field

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

[0002] Equatorial mounts are widely used as equipment for astronomical observation and star photography. Due to the rotation and revolution of the earth, the positions of celestial bodies in the sky are 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 with the celestial body, making observation and recording more convenient.

[0003] When using an equatorial mount, it is generally necessary to cooperate with a latitude mount, a tripod, an equipment bracket or a gimbal, and various matching connectors. The equatorial mount generally includes: a right ascension axis, a drive system, and a control system; the right ascension axis, also known as the polar axis, is a component that connects the equatorial mount base and the telescope, camera, or other observation and recording equipment. When using an equatorial mount, it is necessary to ensure that it is parallel to the axis of the earth's rotation and points to the north or south pole of the earth (depending on the hemisphere where it is located). At present, equatorial mounts are usually equipped with electric or computerized drive systems for accurately tracking the movement of celestial bodies to keep the observation target in a stable position in the telescope or camera.

[0004] When the user uses the equatorial mount, after the telescope, camera or other observation and recording equipment rotates a certain angle along the right ascension axis, they need to be reset. This means that the right ascension axis needs to be rotated in the opposite direction. The technical solution to achieve the above function includes: reverse driving the motor so that the right ascension axis reverses with the equipment. Since the deceleration of the equatorial mount is relatively large, this method is very slow to reset, has low efficiency, and consumes energy. Using a deceleration mechanism with reverse drive, the user can directly reverse the right ascension axis and the load on it by hand. The deceleration mechanism used in this method is either low in precision or expensive. A slide device is added between the right ascension axis and the astronomical photography shooting component. By locking / loosening the rotating shaft through the slide top screw, the astronomical photography shooting component and the right ascension axis can produce relative rotation, thereby realizing the reset of the astronomical photography shooting component. The mechanism used in this method is generally bulky, and the slide and the rotating shaft are not coaxial, and the precision is very poor. Therefore, it is necessary to make improvements. Utility Model Content

[0005] In order to solve the above problems in the prior art, the utility model provides a driving structure and an equatorial mount, which have a high degree of integration, a small overall volume and strong practicality.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] As one aspect of the present invention, a driving structure is proposed, which includes:

[0008] Supporting part;

[0009] A right ascension axis unit, rotatably connected to the support portion;

[0010] A driving unit, movably connected to the supporting part, wherein the driving unit is matched with or separated from the right ascension axis unit;

[0011] When the driving unit cooperates with the right ascension axis unit, the driving unit drives the right ascension axis unit to rotate on the support part;

[0012] When the driving unit is separated from the right ascension axis unit, the driving unit is not connected to the right ascension axis unit, and the right ascension axis unit can rotate freely on the support part.

[0013] Optionally, a clutch unit is further included, and the clutch unit is connected to the support portion; under the action of the clutch unit, the driving unit cooperates with or separates from the right ascension axis unit.

[0014] Optionally, the clutch unit includes a clutch lever, both ends of which are rotatably connected to the support part; one end of the clutch lever is connected to a clutch handle, and one end of the clutch lever is connected to a clutch spring, one end of the clutch spring cooperates with the support part, and the other end of the clutch spring is connected to the clutch handle; a clamping piece is provided on the clutch lever, and the clamping piece clamps the drive unit.

[0015] Optionally, the clamping member is a glass ball screw.

[0016] Optionally, a limiting member is connected to the clutch lever, and the limiting member cooperates with a limiting and yielding portion of the supporting portion.

[0017] Optionally, the clutch lever is connected to a toggle member; and the support shell of the drive unit is provided with a convex portion that matches the toggle member.

[0018] Optionally, the right ascension axis unit includes a right ascension axis worm gear, which is rotatably connected to the support portion; the right ascension axis worm gear is connected to a connecting piece for connecting to an astronomical photography shooting component.

[0019] Optionally, a gimbal mounting seat is also included, and the connecting member is connected to the right ascension axis worm gear through the gimbal mounting seat.

[0020] Optionally, the driving unit includes a supporting shell, which is rotatably connected to the supporting part; the clamping member cooperates with the supporting shell; a power part is connected to the supporting shell, and an output end of the power part is connected to a driving part; a spindle worm is rotatably connected to the supporting shell, one end of the spindle worm is connected to a driven part that cooperates with the driving part, and the spindle worm is meshed with a worm wheel of the right ascension axis.

[0021] As another aspect of the present invention, an equatorial mount is provided, which includes the driving structure as described above.

[0022] The driving structure and equatorial mount of the utility model have beneficial effects, which are specifically embodied in the following aspects: 1. The driving structure has a light weight as a whole, a small overall volume, a regular appearance, and is convenient for storage; 2. The self-locking characteristics of the right ascension axis worm wheel and the main shaft worm gear are utilized to realize transmission and prevent back-drive; the right ascension axis worm wheel is separated from the main shaft worm gear to realize clutching, and the adjustment of astronomical photography shooting components is realized, which is convenient and practical; 3. A limiting member is connected to the clutch lever, and the limiting member cooperates with the limiting and yielding part on the supporting part, and the limiting and yielding part is used to limit the clutch lever to rotate counterclockwise and allow the clutch lever to rotate clockwise, that is, the limiting member limits the clutch lever to rotate only clockwise, so as to prevent the operator's misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 It is a structural stereogram of the driving structure of the utility model;

[0025] Figure 2 It is a right side view of the driving structure of the utility model;

[0026] Figure 3 It is a left side view of the driving structure of the utility model;

[0027] Figure 4 This is an exploded front view of the drive structure of the utility model;

[0028] Figure 5 This is an exploded rear view of the drive structure of the utility model;

[0029] Figure 6 It is a structural schematic diagram of the support shell of the utility model. DETAILED DESCRIPTION

[0030] 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.

[0031] A driving structure of an embodiment of the present application, such as Figure 1-Figure 3 As shown, it comprises: a support portion 1, which plays a supporting role;

[0032] A right ascension axis unit 2 is rotatably connected to the support portion 1;

[0033] The driving unit 3 is movably connected to the support portion 1, and the driving unit 3 cooperates with or is separated from the right ascension axis unit 2; when the driving unit 3 cooperates with the right ascension axis unit 2, the driving unit 3 drives the right ascension axis unit 2 to rotate on the support portion 1; when the driving unit 3 is separated from the right ascension axis unit 2, the driving unit 3 is not connected to the right ascension axis unit 2, and the right ascension axis unit 2 can rotate freely on the support portion 1.

[0034] In one embodiment, if Figure 1-Figure 3 As shown, it also includes a clutch unit 4, which is connected to the support part 1; under the action of the clutch unit 4, the drive unit 3 cooperates with or separates from the right ascension axis unit 2.

[0035] Specifically, if Figure 1-Figure 5 As shown, the clutch unit 4 includes a clutch lever 41, and both ends of the clutch lever 41 are rotatably connected to the support portion 1 respectively; the support portion 1 is provided with a clearance area 11 for the clutch lever 41 to be installed; one end of the clutch lever 41 extends to the outside of the clearance area 11 and is connected to a clutch handle 42, and the clutch handle 42 rotates to drive the clutch lever 41 to rotate; a clutch coil spring 43 is connected to one end of the clutch lever 41, and one end of the clutch coil spring 43 is connected to the support portion 1, and the clutch coil spring 43 is sleeved on one end of the clutch lever 41 The other end of the clutch coil spring 43 is connected to the clutch handle 42, and the clutch lever 41 is connected to a limit member 45. When the clutch lever 41 rotates clockwise, the clutch coil spring 43 is gradually compressed, and the limit member 45 cooperates with the limit position-giving portion 17 of the support portion 1. The limit position-giving portion 17 is used to limit the clutch lever 41 from rotating counterclockwise and allow the clutch lever 41 to rotate clockwise, that is, the limit member 45 limits the clutch lever 41 to rotate only clockwise, which plays a foolproof role; as an example, the limit position-giving portion 17 is an arc-shaped groove;

[0036] The clutch lever 41 is provided with a pressing member 44. Under normal conditions, the pressing member 44 on the clutch lever 41 presses the driving unit 3, so that the driving unit 3 cooperates with the right ascension axis unit 2.

[0037] The clutch lever 41 is connected with a toggle member 46, and as an example, the toggle member 46 is a hexagon socket set screw; the toggle member 46 and the pressing member 44 are on the same side of the clutch lever 41; the support shell 31 of the drive unit 3 is provided with a convex portion 310 that matches the toggle member 46, and the convex portion 310 is located below the clutch lever 41. When the clutch lever 41 rotates clockwise to a preset position, the toggle member 46 pushes the convex portion 310, thereby driving the drive unit 3 and the right ascension axis unit 2 to move. After the external force is removed, the toggle member 46 returns to its original position following the clutch lever 41, and the toggle member 46 does not cooperate with the convex portion 310; as an example, the convex portion 310 is a convex block; a travel groove 311 is provided on the support shell 31 for the travel action of the toggle member 46, and the toggle member 46 can only move in the travel groove 311, and the convex portion 310 cooperates with the travel groove 311, so that the support shell 31 will not be separated from the clutch lever 41, and the clutch lever 41 has a certain limiting effect on the drive unit 3, such as Figure 6 As shown;

[0038] When the clutch handle 42 is rotated by external force, the clutch lever 41 is driven to rotate relative to the support part 1, so that the clamping member 44 no longer presses the drive unit 3. The rotation of the clutch lever 41 reduces the clamping force of the clamping member 44 on the drive unit 3, and the drive unit 3 can also be pushed open by the toggle member 46; the drive unit 3 rotates relative to the support part 1, and the drive unit 3 is separated from the right ascension axis unit 2 at this time, so that the right ascension axis unit 2 can rotate freely, thereby completing the reset of the astronomical photography shooting components connected to the right ascension axis unit 2; when the clutch handle 42 is released, the clutch coil spring 43 resets the clutch lever 41, and the clamping member 44 on the clutch lever 41 presses the drive unit 3.

[0039] In one embodiment, if Figure 1-Figure 5As shown, the right ascension axis unit 2 includes a right ascension axis worm wheel 21, and the right ascension axis worm wheel 21 is rotatably connected to the support part 1 through a rotating part; the support part 1 is provided with a accommodating area 12 for accommodating the right ascension axis worm wheel 21; the rotating part is a bearing, and the upper and bottom parts of the right ascension axis worm wheel 21 are connected to the support part 1 through bearings, so that the right ascension axis worm wheel 21 can rotate relative to the support part 1; the right ascension axis worm wheel 21 is connected to a gimbal mounting seat 22, and the right ascension axis worm wheel 21 and the gimbal mounting seat 22 are an integral structure or a split structure; the gimbal mounting seat 22 is connected to a connecting member 23 for connecting with an astronomical photography shooting component, and the center of the connecting member 23 is perpendicular to the horizontal plane of the gimbal mounting seat 22; as an example, the connecting member 23 in this embodiment is a screw, which is detachably connected to an astronomical photography shooting component, such as the base of a telescope.

[0040] In one embodiment, if Figure 1-Figure 5 As shown, the support portion 1 includes a bearing seat 13, a cover plate 14 and a side plate 16, and the side plate 16 is connected between the bearing seat 13 and the cover plate 14; the clearance area 11 is located on the cover plate 14, and the bearing seat 13 is provided with a accommodating area 12, the cover plate 14 is connected to the bearing seat 13, and the cover plate 14 is provided with a clearance hole 15 for the clearance installation of the right ascension axis worm gear 21; in order to facilitate processing, a limit clearance portion 17 is provided on the side plate 16.

[0041] In one embodiment, if Figure 1-Figure 5 As shown, the drive unit 3 includes a support shell 31, the bottom of the support shell 31 is rotatably connected to the support part 1 through a first rotating shaft 32; the pressing member 44 cooperates with the support shell 31; the support shell 31 is connected with a power part 33, as an example, the power part 33 is a driving motor, which is a prior art and is not described here; the output end of the power part 33 is connected with an active member 34, and the support shell 31 is rotatably connected with a spindle worm 35 through a bearing, and one end of the spindle worm 35 is connected to The driven member 36 cooperates with the active member 34. As an example, the active member 34 is a driving gear; the driven member 36 is a driven gear; the main shaft worm 35 is meshed with the right ascension axis worm wheel 21; the power unit 33 works to drive the active member 34 to rotate, the active member 34 drives the driven member 36, thereby driving the main shaft worm 35 to rotate, and the right ascension axis worm wheel 21 rotates under the drive of the main shaft worm 35, thereby realizing the rotation of the connecting member 23 connected to the astronomical photography shooting component, thereby achieving the purpose of rotating the astronomical photography shooting component around the right ascension axis unit 2.

[0042] When the pressing member 44 presses the support shell 31, the right ascension axis worm wheel 21 meshes with the main shaft worm 35. When the pressing member 44 does not press the support shell 31, the right ascension axis worm wheel 21 and the main shaft worm 35 are separated. Specifically, when the clutch handle 42 is rotated by external force, the clutch lever 41 is driven to rotate relative to the support portion 1, so that the pressing member 44 no longer presses the support shell 31. The rotation of the clutch lever 41 reduces the pressing force of the pressing member 44 on the drive unit 3, and the drive unit 3 can also be pushed open by the toggle member 46. The support shell 31 takes the first rotating shaft 32 as a fulcrum. Relative to the rotation of the support part 1, when the clutch lever 41 rotates clockwise to a preset position, the driving member 46 pushes the protrusion 310. After pushing the preset distance, the main shaft worm 35 is separated from the right ascension axis worm wheel 21, so that the right ascension axis unit 2 can rotate freely, thereby completing the reset of the astronomical photography shooting components connected to the right ascension axis unit 2; when the clutch handle 42 is released, the clutch coil spring 43 resets the clutch lever 41, and the clamping member 44 on the clutch lever 41 presses the support shell 31, and the right ascension axis worm wheel 21 engages with the main shaft worm 35 to form a limit.

[0043] In one embodiment, an intermediate transmission member 37 is further included, and the intermediate transmission member 37 is rotatably connected to the support shell 31 through a second rotating shaft 38; the active member 34 and the driven member 36 are respectively matched with the intermediate transmission member 37, and the intermediate transmission member 37 is a double gear. The intermediate transmission member 37 can achieve an optimal transmission ratio and improve the transmission efficiency.

[0044] In one embodiment, if Figure 5 As shown, a clamping area 39 is formed on the support shell 31, and a clamping member 44 cooperates with the clamping area 39. The clamping member 44 is a glass ball screw, which is composed of a spring, a steel ball and an outer shell. The outer shell is threadedly connected to the clutch lever 41, and the steel ball is connected to the outer shell through a spring. This connection structure is a prior art and will not be repeated here. The steel ball of the glass ball screw cooperates with the clamping area 39, and the clamping area 39 is arc-shaped. The arc-shaped design facilitates the movement of the clamping member 44 in the clamping area 39.

[0045] In summary, the present application utilizes the self-locking characteristics of the mutual cooperation between the right ascension axis worm wheel and the main shaft worm to achieve transmission; utilizes the separation of the right ascension axis worm wheel from the main shaft worm to achieve clutch, thereby achieving stepless adjustment of astronomical photography shooting components, which is convenient and practical.

[0046] Another embodiment of the present application provides an equatorial mount, which includes the driving structure as described above.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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 driving structure, characterized in that: It includes: Supporting part; A right ascension axis unit, rotatably connected to the support portion; A driving unit, movably connected to the supporting part, wherein the driving unit is matched with or separated from the right ascension axis unit; When the driving unit cooperates with the right ascension axis unit, the driving unit drives the right ascension axis unit to rotate on the support part; When the driving unit is separated from the right ascension axis unit, the driving unit is not connected to the right ascension axis unit, and the right ascension axis unit can rotate freely on the support part.

2. The driving structure according to claim 1, characterized in that: It also includes a clutch unit, which is connected to the support part; under the action of the clutch unit, the driving unit cooperates with or separates from the right ascension axis unit.

3. The driving structure according to claim 2, characterized in that: The clutch unit includes a clutch lever, both ends of which are rotatably connected to the support part; one end of the clutch lever is connected to a clutch handle, and one end of the clutch lever is connected to a clutch coil spring, one end of the clutch coil spring cooperates with the support part, and the other end of the clutch coil spring is connected to the clutch handle. A clamping piece is provided on the clutch lever, and the clamping piece clamps the drive unit.

4. The driving structure according to claim 3, characterized in that: The clamping member is a glass ball screw.

5. The driving structure according to claim 3, characterized in that: The clutch lever is connected to a limiting member, and the limiting member cooperates with the limiting and yielding portion of the supporting portion.

6. The driving structure according to claim 3, characterized in that: The clutch lever is connected with a toggle piece; the support shell of the drive unit is provided with a convex portion matched with the toggle piece.

7. The driving structure according to claim 3, characterized in that: The right ascension axis unit includes a right ascension axis worm gear, which is rotatably connected to the support portion; the right ascension axis worm gear is connected to a connecting piece for connecting to an astronomical photography shooting component.

8. The driving structure according to claim 7, characterized in that: It also includes a gimbal mounting seat, and the connecting member is connected to the right ascension axis worm gear through the gimbal mounting seat.

9. The driving structure according to claim 7, characterized in that: The driving unit includes a supporting shell, which is rotatably connected to the supporting part; the clamping member cooperates with the supporting shell; a power part is connected to the supporting shell, and an active part is connected to the output end of the power part; a main shaft worm is rotatably connected to the supporting shell, one end of the main shaft worm is connected to a driven part that cooperates with the active part, and the main shaft worm is meshed with the right ascension axis worm wheel.

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

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