CN203630427U - Zoom lens installation structure and surveillance camera - Google Patents
Zoom lens installation structure and surveillance camera Download PDFInfo
- Publication number
- CN203630427U CN203630427U CN201320745658.6U CN201320745658U CN203630427U CN 203630427 U CN203630427 U CN 203630427U CN 201320745658 U CN201320745658 U CN 201320745658U CN 203630427 U CN203630427 U CN 203630427U
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- CN
- China
- Prior art keywords
- zoom lens
- optical axis
- axle sleeve
- mounting structure
- mount pad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a zoom lens installation structure and a surveillance camera, and pertains to the field of surveillance cameras. The zoom lens installation structure comprises a zoom lens and an installation seat supporting the zoom lens. The bottom of the zoom lens is provided with an optical axis portion. The middle portion of the installation seat is provided with a through hole for the optical axis portion to insert. The zoom lens installation structure is characterized in that the installation seat is provided with a shaft sleeve for sleeving the optical axis portion at a position corresponding to the through hole, the wall of one end of the shaft sleeve which is away from the installation seat is provided with an opening, the periphery of the shaft sleeve is connected with a jam nut in a threaded manner, one end of the inner circumferential surface of the jam nut which is away from the installation portion is provided with an extrusion portion, the space surrounded by the extrusion portion is shaped like a circular truncated cone, and the lower bottom surface of the circular truncated cone is closer to the installation portion than the upper bottom surface of the circular truncated cone. Through the zoom lens installation structure and the surveillance camera of the utility model, the axis offset of the zoom lens can be avoided, the installed accuracy can be improved, and the camera imaging quality can be improved.
Description
[technical field]
The utility model relates to a kind of CCTV camera, relates in particular to a kind of zoom lens mounting structure of CCTV camera.
[background technology]
As shown in Figure 4, the zoom lens mounting structure of current CCTV camera generally includes: zoom lens 1 and mount pad 2, and the middle part of mount pad 2 is provided with cylindrical shape fixed part 94, and the bottom of zoom lens 1 can be inserted in this cylindrical shape fixed part 94.On the sidewall of cylindrical shape fixed part 94, offer threaded hole 95, when fixing zoom lens 1, holding screw 96 is screwed in to threaded hole 95, push the bottom of zoom lens 1 by holding screw 96, thus fixing zoom lens 1.
There is following shortcoming in this zoom lens mounting structure:
1, due to the extruding of holding screw 96, zoom lens 1 is easily offset, thereby makes the axis of zoom lens 1 and the axis of cylindrical shape fixed part 94 not on same straight line.Can affect like this imaging of video camera, thereby affect image quality, particularly very large on the impact of high-definition camera.
2, the extruding force of holding screw 96 can cause the bottom of zoom lens 1 to deform, and then makes the position of the zoom lens 1 inner multiple lens that arrange that small variation occur, and this can affect the imaging of video camera.
3, in order to guarantee image quality, this mounting structure is very high for the requirement of installation accuracy, conventionally requires the diameter of bottom of zoom lens 1 and the difference of the internal diameter of cylindrical shape fixed part 94 can not exceed 0.05 millimeter.High like this installation accuracy can improve manufacturing cost.
[summary of the invention]
[technical matters]
The utility model is intended to for the problems of the prior art, and a kind of zoom lens mounting structure and CCTV camera are provided.
[solution]
The zoom lens mounting structure that the utility model provides comprises: the mount pad of zoom lens and this zoom lens of support, the bottom of this zoom lens is provided with optical axis portion, the middle part of this mount pad is provided with the through hole inserting for this optical axis portion, it is characterized in that: the position corresponding with this through hole on this mount pad is provided with the axle sleeve of this optical axis portion of socket, on the wall of this axle sleeve away from one end of this mount pad, be provided with opening, the periphery of this axle sleeve has been threaded connection set nut, one end away from this installation portion of the inner peripheral surface of this set nut is provided with press section, the space that this press section surrounds is truncated cone-shaped, the bottom surface of this round platform more approaches this installation portion than upper bottom surface.
The utility model also provides a kind of CCTV camera, and it comprises zoom lens mounting structure as above.
[utility model beneficial effect]
By zoom lens mounting structure of the present utility model and CCTV camera, can avoid the axis of zoom lens to be offset, improve installation accuracy, improve video camera imaging quality, and manufacturing cost is relatively low.
[accompanying drawing explanation]
Fig. 1 is the schematic perspective view of the zoom lens mounting structure of the utility model the first embodiment;
Fig. 2 is the mount pad of zoom lens mounting structure and the schematic top plan view of axle sleeve of the utility model the first embodiment;
Fig. 3 is the shaft section enlarged diagram of the set nut of the zoom lens mounting structure of the utility model the first embodiment; And
Fig. 4 is the schematic perspective view of the zoom lens mounting structure of prior art.
[embodiment]
Core concept of the present utility model is the axle sleeve of the optical axis portion periphery that is socketed in zoom lens bottom to be set on mount pad, and in axle sleeve periphery, set nut to be set.By screwing set nut, axle sleeve is inwardly tightened up, clamp optical axis portion, thereby zoom lens is fixed on mount pad.
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
[embodiment 1]
As shown in Figure 1 to Figure 3, the zoom lens mounting structure of the utility model the first embodiment comprises: the mount pad 2 of zoom lens 1 and this zoom lens 1 of support, the bottom of this zoom lens 1 is provided with optical axis portion 3, and the middle part of this mount pad 2 is provided with the through hole 4 inserting for this optical axis portion 3.
The position corresponding with through hole 4 on mount pad 2 is provided with the axle sleeve 5 of socket optical axis portion 3, on the wall of axle sleeve 5 away from one end of mount pad 2, be provided with opening 6, the periphery of axle sleeve 5 has been threaded connection set nut 7, one end away from installation portion 2 of the inner peripheral surface of set nut 7 is provided with press section 8, the space that press section 8 surrounds is truncated cone-shaped, and the bottom surface of round platform more approaches this installation portion 2 than upper bottom surface.
When zoom lens 1 is fixed on mount pad 2, first optical axis portion 3 is penetrated in set nut 7 and through hole 4 successively, make axle sleeve 5 entangle optical axis portion 3.Then set nut 7 is enclosed within to the outer circumferential side of axle sleeve 5, and screws set nut 7, the screw thread arranging by set nut 7 inner peripheral surfaces and axle sleeve 5 outer peripheral faces, set nut 7 is fixing with axle sleeve 5.
Because the diameter of the circumference that the bottom surface of press section 8 forms is greater than the diameter of the circumference that the upper bottom surface of press section 8 forms, so along with the screwing of set nut 7, set nut 7 is extruding axle sleeve 5 inwardly.Again because one end away from mount pad 2 of axle sleeve 5 is provided with opening 6, so in the time that axle sleeve 5 is subject to inside extruding force, one end away from mount pad 2 of axle sleeve 5 can inwardly be shunk.Like this, one end away from mount pad 2 of axle sleeve 5 can clamp optical axis portion 3 gradually.Thereby realize the fixing of zoom lens 1 and mount pad 2.
By said structure, can obtain zoom lens 1 is fixed on to the technique effect on mount pad 2.And, because axle sleeve 5 is to tighten up to center from surrounding, so can not make optical axis portion 3 be partial to some directions.Therefore zoom lens 1 can not be offset, and can guarantee that like this axis of zoom lens 1 and the center of through hole 4 are on same straight line.The imaging that can guarantee thus video camera is unaffected.
In addition, said structure can not cause pushing optical axis portion 3 to some directions, can not make optical axis portion 3 deform, and therefore can not make the position of multiple lens of optical axis portion 3 interior settings change, thereby can not affect the imaging of video camera.
In addition, said structure is not very high for the requirement of manufacturing accuracy, that is, the difference of the diameter of the diameter of through hole 4 and optical axis portion 3 does not need very little, and preferably, the difference of the diameter of the diameter of through hole 4 and optical axis portion 3 is 0.05 millimeter to 0.1 millimeter.Because axle sleeve 5 is to tighten up to center from surrounding, so, even if the difference of the diameter of the diameter of through hole 4 and optical axis portion 3 is larger, also can guarantee that optical axis portion 3 is positioned at the center of through hole 4.So just reduce the requirement to manufacturing accuracy, thereby reduced manufacturing cost.
In order to fix better zoom lens 1, the opening 6 of offering on axle sleeve 5 is for multiple, and the plurality of opening 6 arranges equally spacedly along the circumferencial direction of axle sleeve 5.In the present embodiment, on axle sleeve 5, offer four openings 6.By multiple openings 6 are set, can make axle sleeve 5 that deformation more easily occurs, therefore can more easily inwardly tighten up, thereby can clamp better optical axis portion 3.Like this, can obtain the technique effect of fixing better zoom lens 1.
In order to make set nut 7 inwardly push better axle sleeve 5, as shown in Figure 3, the axis AA ' in the truncated cone-shaped space that press section 8 surrounds is 15 ° to 20 ° with the angle of bus BB '.If this angle is too little, set nut 7 can be smaller to the extruding force of axle sleeve 5, can not step up well optical axis portion 3.If this angle is too large, in screwing set nut 7, can require great effort very much, inconvenient operation.Therefore, this angle is preferably 15 ° to 20 °.
In the present embodiment, the quantity of opening 6 is four, but the utility model is not limited to this, and the quantity of opening 6 can be two, three, five etc.Certainly, an opening 6 also can be only set.
In the present embodiment, opening 6 be shaped as rectangle, but the utility model is not limited to this, the shape of opening 6 can be also triangle, semicircle etc.
The material of axle sleeve 5 can adopt possess certain elasticity, hardness is higher and temperature influence is smaller material, such as PC(polycarbonate) and ABS(engineering plastics) composite material etc.
[embodiment 2]
The second embodiment of the present utility model is a kind of CCTV camera, and it comprises the zoom lens mounting structure as described in the first embodiment.
Above,, with reference to detailed or specific embodiment, the utility model is illustrated, but those skilled in the art understand: can under the prerequisite that does not depart from spirit of the present utility model and scope, carry out various changes and correction.
[industrial applicibility]
By zoom lens mounting structure of the present utility model and CCTV camera, can avoid the axis of zoom lens to be offset, improve installation accuracy, improve video camera imaging quality, and manufacturing cost is relatively low.
[reference numerals list]
1 zoom lens
2 mount pads
3 optical axis portions
4 through holes
5 axle sleeves
6 openings
7 set nuts
8 press sections
94 cylindrical shape fixed parts
95 threaded holes
96 holding screws.
Claims (5)
1. a zoom lens mounting structure, comprise: the mount pad (2) of zoom lens (1) and this zoom lens of support (1), the bottom of this zoom lens (1) is provided with optical axis portion (3), the middle part of this mount pad (2) is provided with the through hole (4) inserting for this optical axis portion (3), it is characterized in that:
The position corresponding with this through hole (4) on this mount pad (2) is provided with the axle sleeve (5) of this optical axis portion (3) of socket, on the wall of this axle sleeve (5) away from one end of this mount pad (2), be provided with opening (6), the periphery of this axle sleeve (5) has been threaded connection set nut (7), one end away from this installation portion (2) of the inner peripheral surface of this set nut (7) is provided with press section (8), the space that this press section (8) surrounds is truncated cone-shaped, and the bottom surface of this round platform more approaches this installation portion (2) than upper bottom surface.
2. zoom lens mounting structure as claimed in claim 1, is characterized in that:
The opening (6) of offering on described axle sleeve (5) is for multiple, and the plurality of opening (6) arranges equally spacedly along the circumferencial direction of this axle sleeve (5).
3. zoom lens mounting structure as claimed in claim 1, is characterized in that:
The axis AA ' in the truncated cone-shaped space that described press section (8) surrounds is 15 ° to 20 ° with the angle of bus BB '.
4. zoom lens mounting structure as claimed in claim 1, is characterized in that:
Described through hole (4) is 0.05 millimeter to 0.1 millimeter with the difference of the diameter of described optical axis portion (3).
5. a CCTV camera, it comprises the zoom lens mounting structure as described in any one in claim 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745658.6U CN203630427U (en) | 2013-11-22 | 2013-11-22 | Zoom lens installation structure and surveillance camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745658.6U CN203630427U (en) | 2013-11-22 | 2013-11-22 | Zoom lens installation structure and surveillance camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203630427U true CN203630427U (en) | 2014-06-04 |
Family
ID=50816887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320745658.6U Expired - Fee Related CN203630427U (en) | 2013-11-22 | 2013-11-22 | Zoom lens installation structure and surveillance camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203630427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793311A (en) * | 2015-04-30 | 2015-07-22 | 浙江宇视科技有限公司 | Connecting mechanism of lens and lens mount |
-
2013
- 2013-11-22 CN CN201320745658.6U patent/CN203630427U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793311A (en) * | 2015-04-30 | 2015-07-22 | 浙江宇视科技有限公司 | Connecting mechanism of lens and lens mount |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20181122 |