CN219456626U - Switching device of electric focusing device - Google Patents
Switching device of electric focusing device Download PDFInfo
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- CN219456626U CN219456626U CN202320727223.2U CN202320727223U CN219456626U CN 219456626 U CN219456626 U CN 219456626U CN 202320727223 U CN202320727223 U CN 202320727223U CN 219456626 U CN219456626 U CN 219456626U
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Abstract
The utility model discloses a switching device of an electric focusing device, which is used for connecting a focusing transmission shaft of a telescope with the electric focusing device, wherein the electric focusing device comprises a driving mechanism and a first gear, the driving mechanism is in transmission connection with the first gear, and the switching device comprises: the focusing wheel, the second gear and the bracket, the second gear is fixed on the focusing wheel, the focusing wheel is used for being fixedly matched with the focusing transmission shaft and can rotate around the axis of the focusing transmission shaft together with the focusing transmission shaft, the bracket is used for being fixedly connected with the telescope and the electric focusing device respectively, and after the bracket is fixedly connected with the telescope and the electric focusing device respectively, the first gear can be detachably meshed with the second gear, so that the driving mechanism is connected with the focusing wheel through the first gear and the second gear. The utility model can realize two working modes of manual driving and electric driving of the focusing wheel.
Description
Technical Field
The utility model relates to a switching device of an electric focusing device, in particular to a switching device of an electric focusing device used on a telescope, and belongs to the technical field of astronomical photographic equipment.
Background
Typically, shi Ka (schmidt-cassegrain) telescopes, such as astronomical C8, C925, C11, C14, etc., have a manual focus adjustment with a rubber hand wheel. The user focuses by rotating the handwheel clockwise or counterclockwise. When focusing is performed by manually rotating a hand wheel, a precise focusing effect cannot be obtained. In order to improve focusing accuracy, an electric focus adjuster needs to be installed and used for focusing.
In the prior art, the mode of installing the electric focusing device is to detach the rubber hand wheel to expose the focusing rotating shaft, then use a coupler to connect the focusing rotating shaft of Shi Ka with the rotating shaft of the electric focusing device, and fix the electric focusing device through a plurality of brackets and screw holes on the telescope base, thereby realizing focusing by the electric focusing device. However, this approach suffers from at least two problems: after the hand wheel is disassembled and the electric focusing device is connected by the coupler, manual focusing can not be performed any more. Because the focusing stroke of Shi Ka is relatively large, a large range of adjustment of the focus is sometimes required (for example, after the barlo is replaced), and the focusing speed of the electric focusing device is relatively slow, so that if the electric focusing device can only be used for focusing, inconvenience is caused at the moment; after the electric focusing device is installed, the whole appearance is complex and surging, and the user experience is affected.
Disclosure of Invention
The utility model mainly aims to provide a switching device of an electric focusing device, which is mainly used for installing the electric focusing device on a Shi Ka telescope, thereby overcoming the defects in the prior art.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model comprises the following steps:
the utility model provides a switching device of an electric focusing device, which is used for connecting a focusing transmission shaft of a telescope/astronomical telescope with the electric focusing device, wherein the electric focusing device comprises a driving mechanism and a first gear, the driving mechanism is in transmission connection with the first gear, and the switching device comprises:
the focusing wheel, second gear and bracket, the second gear is fixed to be set up on the focusing wheel, the focusing wheel be used for with focusing transmission shaft fixed fit, and can with the focusing transmission shaft is together around the axis rotation of focusing transmission shaft, the bracket be used for respectively with telescope, electronic focus ware fixed connection, and works as after the bracket respectively with telescope, electronic focus ware fixed connection, first gear can with second gear detachably intermeshing, and make actuating mechanism warp first gear, second gear with the focusing wheel transmission is connected.
Compared with the prior art, the switching device of the electric focusing device provided by the utility model not only can be used for connecting the electric focusing device with the focusing transmission shaft of the telescope to realize two working modes of manual driving and electric driving of the focusing wheel, but also can be switched conveniently and rapidly between the two modes.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of an adapter device for an electromotive focus mount according to an exemplary embodiment of the present utility model;
FIG. 2 is an exploded view of an adapter device for an electromotive focus mount according to an exemplary embodiment of the present utility model;
FIG. 3 is a schematic diagram of an electric focus adjusting device and an adapter device of the electric focus adjusting device according to an exemplary embodiment of the present utility model after being fixedly combined;
FIG. 4 is a schematic diagram of a structure of an electric focus adjusting device and an adapter device of the electric focus adjusting device according to an exemplary embodiment of the present utility model after being fixedly combined;
fig. 5 is a schematic cross-sectional view of an electric focus adjusting device and an adapter device of the electric focus adjusting device according to an exemplary embodiment of the utility model.
Detailed Description
In view of the shortcomings in the prior art, the inventor of the present utility model has long studied and practiced in a large number of ways to propose the technical scheme of the present utility model. The technical scheme, the implementation process, the principle and the like are further explained as follows.
The utility model provides a switching device of an electric focusing device, which is used for connecting a focusing transmission shaft of a telescope with the electric focusing device, wherein the electric focusing device comprises a driving mechanism and a first gear, the driving mechanism is in transmission connection with the first gear, and the switching device comprises:
the focusing wheel, second gear and bracket, the second gear is fixed to be set up on the focusing wheel, the focusing wheel be used for with focusing transmission shaft fixed fit, and can with the focusing transmission shaft is together around the axis rotation of focusing transmission shaft, the bracket be used for respectively with telescope, electronic focus ware fixed connection, and works as after the bracket respectively with telescope, electronic focus ware fixed connection, first gear can with second gear detachably intermeshing, and make actuating mechanism warp first gear, second gear with the focusing wheel transmission is connected.
Further, the bracket is provided with a limiting space formed by surrounding of the bracket, the bracket is further provided with a first window, a second window and a third window which are communicated with the limiting space, the focusing wheel is limited in the limiting space, the focusing wheel is in running fit with the bracket, the second gear is exposed from the first window, parts of the focusing wheel are exposed from the second window and the third window respectively, the focusing wheel can be connected with the focusing transmission shaft from the second window, and the focusing wheel can be screwed from the third window.
Further, the first window and the second window are arranged opposite to each other along the axial direction of the bracket.
Further, the first window and the second window are coaxially arranged.
Further, the bracket comprises a first frame body, a second frame body and a connecting body, wherein the first frame body and the second frame body are arranged along the axial direction of the bracket at intervals, the connecting body is fixedly connected with the first frame body, the second frame body and the connecting body are enclosed to form a limiting space, the first frame body is provided with a first window, the second frame body is provided with a second window, and the first frame body and the second frame body are provided with a third window.
Further, the first frame body and the second frame body are annular members, the first window is formed by encircling the first frame body, and the second window is formed by encircling the second frame body.
Further, the first window and the second window are coaxially arranged.
Further, the first frame body comprises a first limiting ring and a second limiting ring, the first limiting ring and the second limiting ring are coaxially arranged and fixedly connected, the second limiting ring is fixedly connected with the connecting body, the inner ring surface of the first limiting ring is surrounded to form the first window, the inner diameter of the second limiting ring is larger than or equal to the inner diameter of the first limiting ring, and the outer diameter of the second limiting ring is larger than the outer diameter of the first limiting ring.
Further, a first bearing is further arranged between the bracket and the focusing wheel, the bracket is fixedly matched with the outer ring of the first bearing, and the focusing wheel is fixedly matched with the inner ring of the first bearing.
Further, the first bearing is arranged between the first frame body and the focusing wheel.
Further, the first bearing is arranged between the second limiting ring and the focusing wheel.
Further, the first bearing and the focusing wheel are coaxially arranged.
Further, the focusing wheel is provided with a first end face and a second end face which are oppositely arranged along the axis of the focusing wheel, the side face is located between the first end face and the second end face, the second gear is fixedly arranged on the first end face, the second end face is provided with a mounting hole, and the focusing transmission shaft can be coaxially sleeved in the mounting hole and can be fixed in the mounting hole.
Further, the second gear is detachably connected with the focusing wheel.
Further, the second gear is in threaded connection with the focusing wheel.
Further, the second gear and the focusing wheel are coaxially arranged.
Further, the focusing wheel comprises a first wheel body and a second wheel body which are sequentially arranged along the axial direction of the focusing wheel, the first wheel body is fixedly connected with the second wheel body, the first wheel body is provided with a first end face, the second wheel body is provided with a second end face, the outer diameter of the second wheel body is larger than that of the first wheel body, the outer diameter of the second wheel body is larger than that of the first window, the outer diameter of the first wheel body is smaller than that of the first window, and the inner diameter of the second window is larger than that of the second wheel body.
Further, the focusing wheel is coaxially arranged with the first window and the second window.
Further, a second bearing is further arranged in the mounting hole, an outer ring of the second bearing is fixedly connected with the focusing wheel, and when the focusing wheel is sleeved on the focusing transmission shaft, part of the focusing transmission shaft is arranged in the mounting hole.
Further, the mounting hole comprises a first hole section and a second hole section which are sequentially arranged along the axial direction of the mounting hole, the first hole section and the second hole Duan Tongzhou are arranged, the inlet of the mounting hole is positioned in the second hole section, the inner diameter of the second hole section is larger than that of the first hole section, the inner diameter of the first hole section is larger than or equal to the outer diameter of the focusing transmission shaft, and the second bearing is fixedly arranged in the second hole section.
Further, the second bearing is coaxially arranged with the focusing wheel.
Further, a positioning hole is further formed in the side face of the focusing wheel, a fastening component is arranged in the positioning hole and is in threaded connection with the focusing wheel, part of the fastening component can extend into the mounting hole and is abutted to the focusing transmission shaft, and the focusing transmission shaft is fixed in the mounting hole.
Further, the switching device of the electric focusing device further comprises: the base is fixedly connected with the second frame body, and the focusing wheel is limited in the limiting space.
The technical scheme, the implementation process and the principle thereof are further explained with reference to the attached drawings.
Referring to fig. 1, 3 and 4, a switching device of an electric focusing device is used for connecting a focusing transmission shaft 700 of a telescope with the electric focusing device 800, wherein the switching device can be fixedly connected with the focusing transmission shaft 700, manual driving of the focusing transmission shaft can be realized by executing screwing action on the switching device, meanwhile, the switching device can also be detachably connected with the electric focusing device 800 in a transmission way, after the switching device is connected with the electric focusing device in a transmission way, electric driving of the focusing transmission shaft can be realized, namely, after the switching device is used for connecting the focusing transmission shaft 700 of the telescope with the electric focusing device 800, electric focusing and manual focusing of the telescope can be realized.
Specifically, the electric focus regulator 800 includes a driving mechanism and a first gear 810, the driving mechanism is in transmission connection with the first gear 810, and more specifically, the electric focus regulator 800 may be a focusing device for focusing a telescope as disclosed in CN113625418A.
Referring to fig. 1, 3 and 4 again, the switching device includes a focusing wheel 200, a second gear 400 and a bracket 300, the second gear 400 is fixedly disposed on the focusing wheel 200, the focusing wheel 200 is used for being fixedly matched with the focusing transmission shaft 700, and can rotate together with the focusing transmission shaft 700 around the axis of the focusing transmission shaft 700, the bracket 300 is used for being fixedly connected with a telescope and an electric focus regulator 800 respectively, when the bracket 300 is fixedly connected with the telescope and the electric focus regulator 800 respectively, the first gear 810 can be detachably meshed with the second gear 400, and the driving mechanism is in transmission connection with the focusing wheel 200 through the first gear 810 and the second gear 400, and it should be noted that the structure and the mode that the first gear 810 can be detachably meshed with the second gear 400 can be seen in CN113625418A.
Illustratively, the bracket 300 may be detachably and fixedly connected to the telescope through an auxiliary connection member such as a bolt, and the bracket 300 may be detachably and fixedly connected to the electric focus regulator 800 through an auxiliary connection member such as a hoop 900.
Specifically, referring to fig. 2 and fig. 5 together, in order to make the size of the switching device smaller and the structural strength higher, the bracket 300 may be sleeved on the focusing wheel 200, and the first bearing 500 is used to realize running fit between the bracket and the bracket, so that friction between the focusing wheel and the bracket is prevented, smoothness of rotation of the focusing wheel during manual and electric focusing is ensured, and meanwhile, the first bearing 500 may also ensure coaxiality of the bracket, the focusing transmission shaft, the focusing wheel and the second gear, so as to ensure focusing precision.
More specifically, the bracket 300 has a limiting space formed by surrounding of the bracket 300, the bracket 300 further has a first window, a second window and a third window 303 which are communicated with the limiting space, the focusing wheel 200 is limited in the limiting space, a first bearing 500 is further arranged between the focusing wheel 200 and the bracket 300, the bracket 300 is fixedly matched with the outer ring of the first bearing 500, the focusing wheel 200 is fixedly matched with the inner ring of the first bearing 500, so that the focusing wheel 200 can rotate around the axis of the bracket in the limiting space, the second gear 400 is exposed from the first window, parts of the focusing wheel 200 are exposed from the second window and the third window 303 respectively, the focusing wheel 200 can be connected with the focusing transmission shaft 700 from the second window, and the focusing wheel 200 can be screwed from the third window 303.
It will be appreciated that the bracket 300 is an annular frame structure, the second gear 400 is exposed from the first window to be engaged with the first gear 810 of the electric focusing device 800, as a preferred embodiment, the second gear 400 may extend from the first window to form a limiting space, and part of the focusing wheel 200 is exposed from the second window, mainly for enabling the focusing wheel to be fixedly connected with the focusing transmission shaft 700, as a preferred embodiment, the focusing transmission shaft 700 may extend from the second window into the limiting space and be fixedly connected with the focusing wheel 200, and part of the focusing wheel 200 is exposed from the third window 303, so that the focusing wheel 200 may be manually operated to rotate.
Specifically, the first window and the second window are disposed opposite to each other along the axial direction of the bracket 300, the first window and the second window are coaxially disposed, the whole focusing wheel 200 is in a rotating body structure, for example, a columnar structure, and the focusing wheel 200 may be coaxially disposed with the bracket 300 and/or a limiting space inside the bracket 300.
Specifically, the bracket 300 may include a first frame 310, a second frame 320, and a connector 330, where the first frame 310 and the second frame 320 are disposed along an axial direction of the bracket 300 at intervals, the connector 330 is fixedly connected with the first frame 310 and the second frame 320, a limiting space is formed by enclosing the first frame 310, the second frame 320, and the connector 330, a first window is disposed on the first frame 310, a second window is disposed on the second frame 320, and a third window 303 is disposed between the first frame 310 and the second frame 320.
It will be appreciated that the first frame 310 and the second frame 320 are both annular members, such as annular members, the first window is formed by enclosing the first frame 310, the second window is formed by enclosing the second frame 320, the first frame 310 and the second frame 320 may be coaxially and parallelly disposed, the connecting body 330 is mainly used to connect the first frame 310 and the second frame 320 and avoid forming the third window 303, and the connecting body 330 may be an annular member or a cylindrical member, for example, the third window 330 is a notch or an opening provided on the connecting body 330, or the connecting body 330 is a section of structure, such as an arc-shaped sheet structure, disposed along the circumferential direction of the first frame 310 or the second frame 320, and a space between the two is not completely covered by the connecting body 300 in the circumferential direction of the first frame 310 or the second frame 320, thereby forming the third window 303.
Specifically, for the convenience of using staple bolt 900 to connect electric focus ware 800 and bracket 300, first support body 310 includes first spacing ring and second spacing ring, first spacing ring and the coaxial setting of second spacing ring and fixed connection, second spacing ring and connector 330 fixed connection, the interior annular face of first spacing ring encloses and closes and form first window, the internal diameter of second spacing ring is greater than or equal to the internal diameter of first spacing ring, the external diameter of second spacing ring is greater than the external diameter of first spacing ring, be formed with step structure at the outside surface of first support body 310 promptly, when making staple bolt 900 hug on first spacing ring of first support body 310 like this, in the axial, staple bolt 900 can be inconsistent with the second spacing ring, thereby improve staple bolt and bracket connection structure's stability.
Specifically, the first bearing 500 is disposed between the first frame 310 and the focusing wheel 200, specifically between the second limiting ring and the focusing wheel 200, and as a preferred scheme, the first bearing 500, the focusing wheel 200, the first limiting ring and the second limiting ring are all coaxially disposed.
Specifically, the focusing wheel 200 is integrally in a columnar structure, the focusing wheel 200 has a first end face and a second end face which are oppositely arranged along the axis of the focusing wheel 200, and a side face between the first end face and the second end face, the second gear 400 is fixedly arranged on the first end face, the second end face is provided with a mounting hole, the focusing transmission shaft 700 can be coaxially sleeved in the mounting hole and can be fixed in the mounting hole, and as a preferred mode, the mounting hole and the focusing wheel 200 are coaxially arranged.
Specifically, the second gear 400 is detachably connected to the focusing wheel 200, and as a preferred mode, the second gear 400 is screwed to the focusing wheel 200, and as a preferred mode, the second gear 400 is coaxially arranged with the focusing wheel 200.
As a preferred mode, the focusing wheel 200 includes a first wheel body 210 and a second wheel body 220 which are sequentially arranged along the axial direction of the first wheel body 210 and the second wheel body 220, the first wheel body 210 is provided with a first end surface, the second wheel body 220 is provided with a second end surface, the outer diameter of the second wheel body 220 is larger than the outer diameter of the first wheel body 210, the outer diameter of the second wheel body 220 is larger than the inner diameter of the first window, the outer diameter of the first wheel body 210 is smaller than the inner diameter of the first window, the inner diameter of the second window is larger than the outer diameter of the second wheel body 220, the whole focusing wheel 200 can be arranged in a limit space in the bracket 300 from the second window, the first wheel body 210 of the focusing wheel 210 is sleeved in the first bracket 310, the outer diameter of the focusing wheel 220 is larger than the inner diameter of the first window, and accordingly the first bracket 310 can be in conflict with the second wheel body 220 in the axial direction, and the positioning of the focusing wheel and the bracket in the axial direction is achieved.
In particular, at least the second wheel 220 is exposed at the third window 303 and serves as an operating portion for manually adjusting the focusing wheel 200, and in a preferred manner, in order to enhance the manipulation effect of the focusing wheel 200, a lateral (i.e., rotational) surface of the second wheel 220 may be provided with a non-slip relief structure.
Specifically, the second bearing 600 is further disposed in the mounting hole, the inner diameter of the inner ring of the second bearing 600 is larger than the outer diameter of the focusing transmission shaft 700, when the focusing wheel 200 is sleeved on the focusing transmission shaft 700, part of the focusing transmission shaft 700 is disposed in the mounting hole and located in the inner ring of the second bearing 600, and the transmission shaft 700 is in clearance fit with the second bearing 600.
Specifically, the second bearing 600 is coaxially disposed with the focusing wheel 200, and the second bearing 600 and the first bearing 500 together define the position of the focusing wheel in the axial direction, so that the position of the second gear fixed at the end of the focusing wheel in the axial direction is also defined, so that the focusing wheel can be freely rotated, and the axial position is defined, so that the relative positions of the first gear and the second gear are correct during installation, and the second gear can be stably meshed with the first gear on the electric focusing device.
Specifically, the mounting hole includes first hole section and the second hole section that set gradually along self axial, and first hole section and second hole Duan Tongzhou set up, and the entry of mounting hole is located the second hole section, and the internal diameter of second hole section is greater than the internal diameter of first hole section, and the internal diameter of first hole section is greater than or equal to the external diameter of focusing transmission shaft 700, and second bearing 600 is fixed to be set up at the second hole section.
Specifically, a positioning hole is further formed in the side face of the focusing wheel 200, a fastening component is arranged in the positioning hole, the fastening component can be a jackscrew or a screw, and the like, the fastening component is in threaded connection with the focusing wheel 200, part of the fastening component can extend into the mounting hole and is in contact with the focusing transmission shaft 700, and the focusing wheel 200 and the focusing transmission shaft 700 can be stably fixed by screwing the fastening component.
Specifically, the switching device of the electric focus regulator 800 further includes a base 100, where the base 100 is fixedly connected with the second frame 320, so as to integrally encapsulate the focus wheel 200 in a limiting space in the bracket 300; of course, the base 100 may also be used for fixedly connecting with a telescope, and for example, the base 100 may be provided with a plurality of mounting holes, which may be threaded holes for fixedly connecting with the second frame body and the telescope, and the like.
Specifically, the base 100 is also an annular member, and the inner diameter of the opening of the base 100 is larger than the outer diameter of the focusing transmission shaft and smaller than the maximum outer diameter of the focusing wheel 200, so that the base 100 and the bracket 300 jointly enclose a relatively airtight packaging or limiting space.
The base 100 and the second frame 320 may be fixedly connected by a connecting member such as a screw, or the base 100 and the telescope may be fixedly connected by a connecting member such as a screw, or of course, the base 100 and the second frame 320, or the base 100 and the telescope may be detachably fixed by other means, which will not be described in detail herein.
Specifically, the base 100 may further be provided with a positioning ring 110, where the positioning ring 110 is disposed around the opening, and the positioning ring 100 may abut against the second bearing 600 to limit the movement of the second bearing 600.
The switching device of the electric focusing device provided by the utility model not only can be connected with the electric focusing device and the focusing transmission shaft of the telescope to realize two working modes of manual driving and electric driving of the focusing wheel, but also can be switched conveniently and rapidly between the two modes.
The switching device of the electric focusing device can be fixedly mounted or dismounted with the electric focusing device through the anchor ear and the like, is more convenient to use, is convenient to mount, can be mounted only through connecting pieces such as screws and the like, and does not need to perform additional calibration; in addition, the switching device of the electric focusing device is smaller in size, attractive in appearance and better in use experience of users.
It should be understood that the above embodiments are merely for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and implement the same according to the present utility model without limiting the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.
Claims (10)
1. An adapter device of electronic focus ware for connect the focusing transmission shaft and the electronic focus ware of telescope, electronic focus ware includes actuating mechanism and first gear, actuating mechanism with first gear transmission is connected, its characterized in that, adapter device includes:
the focusing wheel, second gear and bracket, the second gear is fixed to be set up on the focusing wheel, the focusing wheel be used for with focusing transmission shaft fixed fit, and can with the focusing transmission shaft is together around the axis rotation of focusing transmission shaft, the bracket be used for respectively with telescope, electronic focus ware fixed connection, and works as after the bracket respectively with telescope, electronic focus ware fixed connection, first gear can with second gear detachably intermeshing, and make actuating mechanism warp first gear, second gear with the focusing wheel transmission is connected.
2. The switching device of an electric focus adjustment device according to claim 1, wherein: the bracket is provided with a limiting space formed by surrounding of the bracket, the bracket is also provided with a first window, a second window and a third window which are communicated with the limiting space, the focusing wheel is limited in the limiting space, the focusing wheel is in running fit with the bracket, the second gear is exposed from the first window, parts of the focusing wheel are also exposed from the second window and the third window respectively, the focusing wheel can be connected with the focusing transmission shaft from the second window, and the focusing wheel can be screwed from the third window;
and/or, the first window and the second window are oppositely arranged along the axial direction of the bracket;
and/or, the first window and the second window are coaxially arranged.
3. The switching device of the electric focus adjustment device according to claim 2, wherein: the bracket comprises a first bracket body, a second bracket body and a connecting body, wherein the first bracket body and the second bracket body are arranged at intervals along the axial direction of the bracket, the connecting body is fixedly connected with the first bracket body and the second bracket body, a limiting space is formed by enclosing the first bracket body, the second bracket body and the connecting body, a first window is arranged on the first bracket body, a second window is arranged on the second bracket body, and a third window is arranged between the first bracket body and the second bracket body;
and/or, the first frame body and the second frame body are annular members, the first window is formed by encircling the first frame body, and the second window is formed by encircling the second frame body;
and/or, the first window and the second window are coaxially arranged.
4. The switching device of the electric focus adjustment device according to claim 3, wherein: the first frame body comprises a first limiting ring and a second limiting ring, the first limiting ring and the second limiting ring are coaxially arranged and fixedly connected, the second limiting ring is fixedly connected with the connecting body, the inner ring surface of the first limiting ring surrounds the first window, the inner diameter of the second limiting ring is larger than or equal to the inner diameter of the first limiting ring, and the outer diameter of the second limiting ring is larger than the outer diameter of the first limiting ring.
5. The switching device of the electric focus adjustment device according to claim 4, wherein: a first bearing is further arranged between the bracket and the focusing wheel, the bracket is fixedly matched with the outer ring of the first bearing, and the focusing wheel is fixedly matched with the inner ring of the first bearing;
and/or the first bearing is arranged between the first frame body and the focusing wheel;
and/or the first bearing is arranged between the second limiting ring and the focusing wheel;
and/or the first bearing and the focusing wheel are coaxially arranged.
6. The switching device of the electric focus adjustment device according to claim 3, wherein: the focusing wheel is provided with a first end face and a second end face which are oppositely arranged along the axis of the focusing wheel, and a side face which is positioned between the first end face and the second end face, the second gear is fixedly arranged on the first end face, the second end face is provided with a mounting hole, and the focusing transmission shaft can be coaxially sleeved in the mounting hole and can be fixed in the mounting hole;
and/or the second gear is detachably connected with the focusing wheel;
and/or, the second gear is in threaded connection with the focusing wheel;
and/or the second gear is coaxially arranged with the focusing wheel.
7. The switching device of the electric focus adjustment device according to claim 6, wherein: the focusing wheel comprises a first wheel body and a second wheel body which are sequentially arranged along the axial direction of the focusing wheel, the first wheel body is fixedly connected with the second wheel body, the first wheel body is provided with a first end face, the second wheel body is provided with a second end face, the outer diameter of the second wheel body is larger than that of the first wheel body, the outer diameter of the second wheel body is larger than that of the first window, the outer diameter of the first wheel body is smaller than that of the first window, and the inner diameter of the second window is larger than that of the second wheel body;
and/or the focusing wheel is coaxially arranged with the first window and the second window.
8. The switching device of the electric focus adjustment device according to claim 6, wherein: the mounting hole is internally provided with a second bearing, the outer ring of the second bearing is fixedly connected with the focusing wheel, and when the focusing wheel is sleeved on the focusing transmission shaft, part of the focusing transmission shaft is arranged in the mounting hole;
and/or the mounting hole comprises a first hole section and a second hole section which are sequentially arranged along the axial direction of the mounting hole, wherein the first hole section and the second hole Duan Tongzhou are arranged, the inlet of the mounting hole is positioned in the second hole section, the inner diameter of the second hole section is larger than that of the first hole section, the inner diameter of the first hole section is larger than or equal to the outer diameter of the focusing transmission shaft, and the second bearing is fixedly arranged in the second hole section;
and/or the second bearing is arranged coaxially with the focusing wheel.
9. The switching device of the electric focus adjustment device according to claim 6, wherein: the side of focusing wheel is still provided with the locating hole, be provided with fastening part in the locating hole, fastening part with focusing wheel threaded connection, fastening part's part can extend to in the mounting hole and with the focusing transmission shaft is inconsistent, and will the focusing transmission shaft is fixed in the mounting hole.
10. The switching device of the motorized focus mount of claim 7, further comprising: the base is fixedly connected with the second frame body, and the focusing wheel is limited in the limiting space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320727223.2U CN219456626U (en) | 2023-04-04 | 2023-04-04 | Switching device of electric focusing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320727223.2U CN219456626U (en) | 2023-04-04 | 2023-04-04 | Switching device of electric focusing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219456626U true CN219456626U (en) | 2023-08-01 |
Family
ID=87383772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320727223.2U Active CN219456626U (en) | 2023-04-04 | 2023-04-04 | Switching device of electric focusing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219456626U (en) |
-
2023
- 2023-04-04 CN CN202320727223.2U patent/CN219456626U/en active Active
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