CN212379635U - Eccentric spacing focusing device and imaging device who prevents to deviate from - Google Patents
Eccentric spacing focusing device and imaging device who prevents to deviate from Download PDFInfo
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- CN212379635U CN212379635U CN202021669045.5U CN202021669045U CN212379635U CN 212379635 U CN212379635 U CN 212379635U CN 202021669045 U CN202021669045 U CN 202021669045U CN 212379635 U CN212379635 U CN 212379635U
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Abstract
The utility model relates to the technical field of imaging equipment, in particular to a focusing device with eccentric position limitation and anti-disengagement function and imaging equipment, which comprises a fixed cylinder, an outer cylinder, an eccentric cylinder and a fastener, wherein the fixed cylinder is arranged in the outer cylinder; the outer circumference of one end, close to the bottom of the annular groove, of the eccentric cylinder is eccentrically provided with two steps with the same outer diameter, and the fastening piece penetrates through the outer cylinder and abuts against the eccentric cylinder to be used for locking the eccentric cylinder. The imaging device comprises a lens and the focusing device which is eccentric and limited to prevent the lens from falling off, wherein the lens is arranged on the focusing device which is eccentric and limited to prevent the lens from falling off. The utility model has the advantages that: the structure is compact, the number of parts is small, the locking strength of each part is improved, and the volume is reduced.
Description
Technical Field
The utility model relates to an imaging equipment technical field specifically is a focusing device and imaging equipment that eccentric spacing prevents to deviate from.
Background
The lens commonly applied to projectors, industrial detection, intelligent transportation, scanning copying equipment and photographic cameras has respective unique functions, the lens with various functions is produced and put into use, the requirements on the assembly aspect of the lens are higher and higher, the performance requirements of the lens are higher and higher, the input cost is higher and higher, and under most conditions, one device is provided with a plurality of lenses to be used in a replaceable mode so as to meet diversified requirements.
In the focusing device in the prior art, as shown in fig. 8, the inner surface of the fixed cylinder is provided with a bearing surface which is abutted against the outer cylinder, the outer cylinder is connected with the fixed cylinder through a screw, and the outer cylinder is connected with the actuating cylinder through a connecting screw and a limiting block.
Disclosure of Invention
An object of the utility model is to provide a focusing device and imaging equipment that eccentric spacing prevents to deviate from to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a focusing device with eccentric limiting and anti-falling functions comprises a fixed cylinder, an outer cylinder, an eccentric cylinder and a fastener, wherein the fixed cylinder is installed in the outer cylinder, an annular groove with a set depth is reserved between the fixed cylinder and the outer cylinder, the eccentric cylinder is movably installed in the annular groove between the fixed cylinder and the outer cylinder, and an anti-falling component is arranged on the inner circumferential surface of the outer cylinder and used for preventing the eccentric cylinder from falling off; the outer circumference of one end, close to the bottom of the annular groove, of the eccentric cylinder is eccentrically provided with two steps with the same outer diameter, and the fastening piece penetrates through the outer cylinder and abuts against the eccentric cylinder to be used for locking the eccentric cylinder.
As a further aspect of the present invention: the centers of the two steps are eccentrically arranged in one of two mutually perpendicular directions to form a bayonet.
As a further aspect of the present invention: the inner circumference of the eccentric cylinder is screw-engaged with the outer circumference of the fixed cylinder.
As a further aspect of the present invention: the anti-disengagement component comprises an inner boss arranged on the edge of the inner circumferential surface of the outer cylinder.
As a further aspect of the present invention: and the outer barrel is circumferentially provided with a threaded hole for mounting the fastener.
As a further aspect of the present invention: and the fixed cylinder and the eccentric cylinder are both provided with interfaces for connecting an external mechanism.
As a further aspect of the present invention: and the fixed cylinder is provided with a first thread part and a second thread part which are respectively in thread fit with the outer cylinder and the eccentric cylinder.
As a further aspect of the present invention: the fastener includes screw and locking handle, the screw connection urceolus and solid fixed cylinder, locking handle screw in behind the screw hole that the urceolus was equipped with eccentric section of thick bamboo contact.
As a further aspect of the present invention: and the outer circumferential surface of the eccentric cylinder is provided with scale marks for marking the focusing distance.
As a further aspect of the present invention: the outer cylinder and/or the eccentric cylinder are/is provided with corrosion grains.
The utility model provides another technical scheme: an imaging device comprises a lens and the focusing device which is provided with the eccentric limit and is prevented from falling off, wherein the lens is arranged on the focusing device which is provided with the eccentric limit and is prevented from falling off.
Compared with the prior art, the beneficial effects of the utility model are that: the structure is compact, the number of parts is small, the locking strength of each part is improved, and the volume is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of a focus adjustment apparatus with eccentric position limiting to prevent the focus adjustment apparatus from falling out.
FIG. 2 is a schematic view of an eccentric cylinder of the focusing apparatus with eccentric position limitation to prevent the eccentric cylinder from falling off.
FIG. 3 is a schematic side view of an eccentric cylinder of the focus adjustment apparatus with eccentric position limitation to prevent the eccentric cylinder from being removed.
FIG. 4 is a schematic cross-sectional view of an eccentric cylinder of the focus adjustment apparatus with eccentric position limitation to prevent the eccentric cylinder from falling out.
FIG. 5 is a schematic structural diagram of an outer barrel of a focusing device with eccentric position limitation to prevent the outer barrel from falling off.
FIG. 6 is a schematic cross-sectional view of an outer barrel of a focus adjusting device with eccentric position limitation to prevent the outer barrel from falling off.
FIG. 7 is a schematic cross-sectional view of a fixed cylinder in the focus adjustment apparatus with eccentric position limitation to prevent the fixed cylinder from falling off.
Fig. 8 is a schematic cross-sectional view of a limiting structure in an embodiment of the present invention.
In the drawings: 1-outer cylinder, 2-eccentric cylinder, 3-fixed cylinder, 301-bearing surface, 4-screw, 5-fastening handle, 6-inner boss, A-first step and B-second step.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Referring to fig. 1, in an embodiment of the present invention, an eccentric position-limiting and anti-slip focusing apparatus includes a fixed cylinder 3, an outer cylinder 1, an eccentric cylinder 2 and a fastening member, wherein the fixed cylinder is installed in the outer cylinder, an annular groove with a set depth is left between the fixed cylinder and the outer cylinder, the eccentric cylinder 2 is movably installed in the annular groove between the fixed cylinder 3 and the outer cylinder 1, and an anti-slip component is disposed on an inner circumferential surface of the outer cylinder 1 for preventing the eccentric cylinder 2 from slipping out; the outer circumference of the eccentric cylinder 2 close to one end of the bottom of the annular groove is eccentrically provided with two steps with the same outer diameter, and the fastening piece penetrates through the outer cylinder 1 and abuts against the eccentric cylinder 2 to lock the eccentric cylinder 2.
Specifically, as shown in fig. 2 to 4, the centers of the two steps are eccentrically arranged in one of two mutually perpendicular directions to form a bayonet, that is, the two steps are a first step a and a second step B, respectively; the centers O1 and O2 of the first step A and the second step B are concentric on the y axis of the x axis and the y axis, the x axis has eccentricity, the eccentricity distance is a, so that a part of the eccentric cylinder protrudes to form a bayonet; and the anti-disengagement component is matched with the inner circumferential surface of the outer barrel 1 to realize the anti-disengagement function of the eccentric barrel. The inner circumference of the eccentric cylinder 2 is in threaded fit with the outer circumference of the fixed cylinder 3; the eccentric cylinder 2 is rotated to enable the eccentric cylinder 2 and the multi-thread arranged on the fixed cylinder to rotate relatively, so that the focusing device with eccentric position limitation and disengagement prevention can extend and contract within a fixed range. When the eccentric cylinder 2 stretches to a set length, the eccentric cylinder is screwed and fixed through a fastener. The whole structure is simple and compact, the volume of each component after assembly is reduced, the connection strength is high, and the anti-disengagement function is further realized.
Further, as shown in fig. 5 and 6, the anti-slip-out member includes an inner boss 6 provided at an inner circumferential edge of the outer cylinder 1.
The inner boss 6 and a bayonet of the eccentric cylinder 2 form stroke interference in the axial direction, and the width of the inner boss 6 is smaller than or equal to the difference between the maximum width B2 and the minimum width B1 of the bayonet; the eccentric cylinder is limited to be directly separated from the outer cylinder, and meanwhile, the eccentric cylinder can be conveniently staggered and stretched into the annular groove and then installed in the annular groove.
Referring to fig. 1, in a preferred embodiment of the present invention, the fixed cylinder 3 and the eccentric cylinder 2 are both provided with interfaces for connecting external mechanisms.
The ports are screw ports provided on an inner circumference of the fixed cylinder and an outer circumference of the eccentric cylinder, respectively, for connecting external mechanisms such as a camera and a lens. Or the interfaces are snap interfaces respectively arranged on the inner circumference of the fixed cylinder and the outer circumference of the eccentric cylinder and used for connecting external mechanisms, such as a camera and a lens.
Referring to fig. 7, in another embodiment of the present invention, the fixed cylinder is provided with a first threaded portion and a second threaded portion, and the first threaded portion and the second threaded portion are respectively in threaded engagement with the outer cylinder and the eccentric cylinder.
Specifically, a first threaded part and a second threaded part are sequentially arranged on the outer circumference of the fixed cylinder, and the first threaded part is provided with fine threads and is in threaded fit with the outer cylinder; the second thread part is provided with a multi-start thread which is matched with the multi-start thread arranged on the inner circumference of the eccentric cylinder.
In a preferred embodiment of the present invention, the end portion of the outer circumference of the fixed cylinder, which is far away from the second threaded portion, is provided with a cylindrical surface, which is matched with the outer cylinder, and the bearing surface 301 of the cylindrical surface abuts against the end surface step of the outer cylinder; the fixing device is used for keeping the outer cylinder and the fixing cylinder to be fixed concentrically.
Referring to fig. 1, in an embodiment of the present invention, the fastening member includes a screw 4 and a locking handle 5, the screw 4 connects the outer cylinder 1 and the fixed cylinder 3, and the locking handle 5 is screwed into a threaded hole formed in the outer cylinder 1 and then contacts the eccentric cylinder 2.
Specifically, as shown in fig. 1 and 5, the outer cylinder 1 is provided with threaded holes for mounting screws and a locking handle, and the locking handle 5 is screwed into the threaded hole formed in the outer cylinder 1 and then contacts the eccentric cylinder 2. Firstly, an eccentric cylinder and a fixed cylinder are assembled, the eccentric cylinder is screwed into the fixed cylinder to a set length of a multi-start thread, before the outer cylinder and the fixed cylinder are concentrically matched, an inner boss of the outer cylinder slides through a bayonet of the eccentric cylinder, the side with the large inner diameter of the outer cylinder is sleeved into the assembled fixed cylinder, then the outer cylinder and the fixed cylinder are uniformly fastened all around by three screws, the axes of the fixed cylinder, the eccentric cylinder and the outer cylinder are kept on the same line by matching of the outer cylinder and the fixed cylinder, and meanwhile, the step of the eccentric cylinder is limited by the inner boss of the outer cylinder and an end face step arranged on the outer cylinder, so that the eccentric cylinder is prevented from being separated. The eccentric cylinder is rotated to make the eccentric cylinder and the multi-thread of the fixed cylinder rotate relatively, thereby realizing the telescopic action of the eccentric cylinder in a fixed range. After the eccentric limiting anti-drop focusing device stretches to the required length, the locking handle 5 is screwed tightly to be screwed and fixed.
Furthermore, scale marks are arranged on the outer circumferential surface of the eccentric cylinder 2 and used for marking focusing distance. The scale mark has a measuring range of 0 to 25mm, namely the eccentric cylinder 2 has a telescopic actuating range of 0 to 25mm, and the adjustable focal length realized by the telescopic actuation of the eccentric cylinder 2 is 0 to 25 mm.
Referring to fig. 2 and 5, in another embodiment of the present invention, the outer cylinder 1 and/or the eccentric cylinder 2 are provided with a texture.
Specifically, the outer barrel 1 is provided with corrosion grains, so that focusing hand feeling during focusing is increased; the eccentric cylinder 2 is provided with etched lines, so that focusing hand feeling is increased; and the focusing device which is eccentric and limited and can prevent the focus from being separated is more attractive.
Referring to fig. 1, in another embodiment of the present invention, an imaging apparatus includes a lens and the eccentric position-limiting and anti-dropping focusing device as described above, wherein the lens is mounted on the eccentric position-limiting and anti-dropping focusing device.
Specifically, the eccentric limiting and anti-falling focusing device comprises a fixed cylinder 3, an outer cylinder 1, an eccentric cylinder 2 and a fastener, wherein the fixed cylinder is installed in the outer cylinder, an annular groove with a set depth is reserved between the fixed cylinder and the outer cylinder, the eccentric cylinder 2 is movably installed in the annular groove between the fixed cylinder 3 and the outer cylinder 1, and an anti-falling component is arranged on the inner circumferential surface of the outer cylinder 1 and used for preventing the eccentric cylinder 2 from falling off; the outer circumference of the eccentric cylinder 2 close to one end of the bottom of the annular groove is eccentrically provided with two steps with the same outer diameter, and the fastening piece penetrates through the outer cylinder 1 and abuts against the eccentric cylinder 2 to lock the eccentric cylinder 2. And the inner circumference of the fixed cylinder and the outer circumference of the eccentric cylinder are respectively provided with connecting threads for connecting a camera and a lens.
The utility model discloses a theory of operation: firstly, an eccentric cylinder and a fixed cylinder are assembled, the eccentric cylinder is screwed into the fixed cylinder to a set length of a multi-start thread, before the outer cylinder and the fixed cylinder are concentrically matched, an inner boss of the outer cylinder slides through a bayonet of the eccentric cylinder, the side with the large inner diameter of the outer cylinder is sleeved into the assembled fixed cylinder, then the outer cylinder and the fixed cylinder are uniformly fastened all around by three screws, the axes of the fixed cylinder, the eccentric cylinder and the outer cylinder are kept on the same line by matching of the outer cylinder and the fixed cylinder, and meanwhile, the step of the eccentric cylinder is limited by the inner boss of the outer cylinder and an end face step arranged on the outer cylinder, so that the eccentric cylinder is prevented from being separated. The eccentric cylinder is rotated to make the eccentric cylinder and the multi-thread of the fixed cylinder rotate relatively, thereby realizing the telescopic action of the eccentric cylinder in a fixed range. After the eccentric limiting anti-drop focusing device stretches to the required length, the locking handle 5 is screwed tightly to be screwed and fixed.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. The focusing device is characterized by further comprising an eccentric cylinder and a fastener, wherein the eccentric cylinder is movably arranged in the annular groove between the fixed cylinder and the outer cylinder, and an anti-disengagement component is arranged on the inner circumferential surface of the outer cylinder and used for preventing the eccentric cylinder from disengaging; the outer circumference of one end, close to the bottom of the annular groove, of the eccentric cylinder is eccentrically provided with two steps with the same outer diameter, and the fastening piece penetrates through the outer cylinder and abuts against the eccentric cylinder to be used for locking the eccentric cylinder.
2. The apparatus of claim 1, wherein the centers of the two steps are eccentrically arranged in one of two directions perpendicular to each other to form a bayonet.
3. The apparatus of claim 1, wherein the eccentric holder is formed with an inner circumference to be screw-engaged with an outer circumference of the fixed cylinder.
4. The apparatus of claim 1, wherein the anti-slip means comprises an inner protrusion formed on an inner circumferential edge of the outer cylinder.
5. The apparatus of claim 1, wherein the outer barrel has a threaded hole for receiving the fastening element.
6. The focus adjusting device with the eccentric limit preventing being disengaged as claimed in claim 5, wherein the fastening member comprises a screw and a locking handle, the screw connects the outer cylinder and the fixed cylinder, and the locking handle is screwed into a threaded hole formed in the outer cylinder and then contacts with the eccentric cylinder.
7. The focus adjusting device with the eccentric limit preventing from falling off as claimed in claim 1, wherein the fixed cylinder is provided with a first threaded part and a second threaded part, and the first threaded part and the second threaded part are respectively in threaded fit with the outer cylinder and the eccentric cylinder.
8. The focus adjusting apparatus with an eccentric position limitation for preventing the focus adjusting device from being removed as claimed in claim 1, wherein the eccentric cylinder has a scale mark on its outer circumference for indicating the focus adjusting distance.
9. The focus adjusting apparatus with eccentric position limitation for preventing from falling off as claimed in claim 1, wherein the outer cylinder and/or the eccentric cylinder is provided with a corrosion texture.
10. An imaging apparatus comprising a lens and the focus adjusting means for preventing decentering restriction from coming off as claimed in any one of claims 1 to 9, wherein the lens is mounted on the focus adjusting means for preventing decentering restriction from coming off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021669045.5U CN212379635U (en) | 2020-08-12 | 2020-08-12 | Eccentric spacing focusing device and imaging device who prevents to deviate from |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021669045.5U CN212379635U (en) | 2020-08-12 | 2020-08-12 | Eccentric spacing focusing device and imaging device who prevents to deviate from |
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| Publication Number | Publication Date |
|---|---|
| CN212379635U true CN212379635U (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021669045.5U Active CN212379635U (en) | 2020-08-12 | 2020-08-12 | Eccentric spacing focusing device and imaging device who prevents to deviate from |
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| Country | Link |
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| CN (1) | CN212379635U (en) |
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- 2020-08-12 CN CN202021669045.5U patent/CN212379635U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220512 Address after: No. 8, Hongda Road, Hongtang village, Tongsheng street, Yuhua District, Changsha City, Hunan Province, 410116 Patentee after: HUNAN CHIOPT OPTICAL TECHNOLOGY Co.,Ltd. Address before: 511442 2nd floor, No.1 Workshop, Jinshan Industrial Park, pengdizhuang, lirendong village, Nancun Town, Panyu District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU CHIOPT OPTOTECH Co.,Ltd. |
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| TR01 | Transfer of patent right |