CN209201191U - Rotation mechanism in vertical shaft and video camera - Google Patents
Rotation mechanism in vertical shaft and video camera Download PDFInfo
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- CN209201191U CN209201191U CN201920065647.0U CN201920065647U CN209201191U CN 209201191 U CN209201191 U CN 209201191U CN 201920065647 U CN201920065647 U CN 201920065647U CN 209201191 U CN209201191 U CN 209201191U
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- bearing
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- axle sleeve
- rotation axis
- vertical shaft
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Abstract
This application discloses a kind of rotation mechanism in vertical shaft and video cameras.Rotation mechanism in vertical shaft includes rotation axis, axle sleeve, first bearing, second bearing and Axial Mounting Part；Bearing block is provided on axle sleeve, first bearing is arranged in bearing block, and axle sleeve is set in the periphery of rotation axis with first bearing；Axial Mounting Part is fixedly connected with the rotating shaft and along the periphery for extending radially to rotation axis of rotation axis, there are gaps between Axial Mounting Part and axle sleeve, second bearing is arranged on the rotating shaft in gap, and axle sleeve and Axial Mounting Part are fixedly connected with the not ipsilateral of second bearing respectively；First bearing is radial bearing or radial thrust bearing, and second bearing is that plain thrust bearing, rotation axis and axle sleeve are rotatablely connected by first bearing and second bearing.Video camera includes top box, inner casing and the rotation mechanism in vertical shaft；Rotation axis is arranged on top box, and axle sleeve is arranged on inner casing.The rotation mechanism in vertical shaft and video camera of this offer can reduce the shaking amplitude in rotation process.
Description
Technical field
This application involves technical field of image acquisition more particularly to a kind of rotation mechanism in vertical shaft and video camera.
Background technique
With the development of science and technology, image capture technology is applied to environmental monitoring, artificial intelligence etc. more and more widely
Field.
In the related technology, it generallys use video camera and carries out image acquisition.Video camera usually may include top box and inner casing, interior
Shell is suspended in below top box, and the camera lens of video camera is arranged in inner casing.Due to the camera lens limited viewing angle of video camera, in order to obtain
Larger range of image is obtained, setting rotation mechanism in vertical shaft is usually required between top box and inner casing makes inner casing be able to drive camera lens level
Rotation, to adjust field of view.
Rotation mechanism in vertical shaft in the related technology generallys use two deep groove ball bearings as rolling bearing, due to deep-groove ball
Bearing own structural characteristics, after the assembly is completed often have biggish clearance, therefore video camera rotation when can generate it is larger
Shaking.And as video camera increasingly tends to be intelligent, higher and higher to the steady and smooth requirement of rotation, this shaking can be tight
Ghost image rings the normal use of equipment.Although can reduce shaking amplitude by way of improving machining accuracy and assembly precision,
But this mode cost is high.
Utility model content
The embodiment of the present application provides a kind of rotation mechanism in vertical shaft and video camera, to solve the above problems.
The embodiment of the present application adopts the following technical solutions:
In a first aspect, the embodiment of the present application provides a kind of rotation mechanism in vertical shaft, including rotation axis, axle sleeve, first bearing,
Second bearing and Axial Mounting Part；
Be provided with bearing block on the axle sleeve, the first bearing is arranged in the bearing block, the axle sleeve with it is described
First bearing is set in the periphery of the rotation axis；
The Axial Mounting Part is fixedly connected with the rotation axis and extends radially to the rotation along the rotation axis
The periphery of axis, there are gap between the Axial Mounting Part and the axle sleeve, the second bearing is set in the rotation axis
In the gap, the axle sleeve and the Axial Mounting Part are fixedly connected with the not ipsilateral of the second bearing respectively；
The first bearing is radial bearing or radial thrust bearing, and the second bearing is plain thrust bearing, described
Rotation axis and the axle sleeve are rotatablely connected by the first bearing and the second bearing.
It optionally, further include elastic pressed piece in above-mentioned rotation mechanism in vertical shaft, the elastic pressed piece is located at described the
Between two bearings and the Axial Mounting Part/axle sleeve, and the elastic pressed piece is by the second bearing and the axial direction
Fixing piece/axle sleeve squeezes simultaneously.
Optionally, in above-mentioned rotation mechanism in vertical shaft, the elastic pressed piece is corrugated gasket.
Optionally, in above-mentioned rotation mechanism in vertical shaft, the Axial Mounting Part is bearing (ball) cover, the bearing (ball) cover and institute
The end for stating rotation axis is fixedly connected.
It optionally, further include auxiliary supports in above-mentioned rotation mechanism in vertical shaft, the auxiliary supports are fixed at
In the rotation axis and between the second bearing and the bearing (ball) cover, the corrugated gasket is located at the second bearing
Between the bearing (ball) cover and it is looped around the peripheries of the auxiliary supports, the second bearing abuts pressure with the axle sleeve
Tightly.
Optionally, in above-mentioned rotation mechanism in vertical shaft, the auxiliary supports are circlip, along described turn in the rotation axis
The circumferential direction of moving axis is provided with a circle card slot, and the circlip is fastened in the card slot.
Optionally, in above-mentioned rotation mechanism in vertical shaft, the axle sleeve is limited towards the setting of the side of the Axial Mounting Part
Position portion, circumferentially extending or arrangement one week of the limiting section along the rotation axis, when the second bearing is abutted with the axle sleeve
When compression, the limiting section is in the periphery of the second bearing.
Optionally, in above-mentioned rotation mechanism in vertical shaft, the second bearing includes the first rotation washer, the second rotation washer
And it is folded in the circle rolling element between the first rotation washer and the second rotation washer, the first rotation pad
Circle is fixedly connected with the axle sleeve, and the second rotation washer is fixedly connected with the Axial Mounting Part；
Circumferential direction in the rotation axis along the rotation axis is provided with a circle escape groove, when the first rotation washer and institute
When stating axle sleeve and being fixedly connected, the escape groove is opposite with the first rotation washer.
It optionally, further include sealing element in above-mentioned rotation mechanism in vertical shaft, the sealing element setting is remote in the bearing block
Side from the second bearing simultaneously seals the gap between the rotation axis and the axle sleeve.
Second aspect, the embodiment of the present application provide a kind of video camera, including top box, inner casing and described horizontally rotate
Mechanism；The rotation axis is arranged on the top box, and the axis is set on the inner casing.
The embodiment of the present application use at least one above-mentioned technical solution can reach it is following the utility model has the advantages that
Rotation mechanism in vertical shaft and video camera disclosed in the embodiment of the present application can by setting first bearing and second bearing
Shaking amplitude during turn reducing is dynamic.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the connection structure cross-sectional view of top box, inner casing and rotation mechanism in vertical shaft disclosed in the embodiment of the present application；
Fig. 2 is the whole sectional structure view of rotation mechanism in vertical shaft disclosed in the embodiment of the present application；
Fig. 3 is the broken section topology view of rotation mechanism in vertical shaft disclosed in the embodiment of the present application.
Description of symbols:
1- rotation mechanism in vertical shaft, 10- rotation axis, 100- threading hole, 101- card slot, 102- escape groove, 11- axle sleeve, 110-
Bearing block, 111- limiting section, 12- first bearing, 13- second bearing, 130- first rotate washer, 131- second rotates washer,
132- rolling element, 14- Axial Mounting Part/bearing (ball) cover, 15- elastic pressed piece, 16- auxiliary supports, 17- sealing element, the top 2-
Box, 3- inner casing.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall in the protection scope of this application.
Below in conjunction with attached drawing, the technical scheme provided by various embodiments of the present application will be described in detail.
The embodiment of the present application discloses a kind of video camera, as shown in Figure 1 to Figure 3, including rotation mechanism in vertical shaft 1, top box 2,
And inner casing 3, top box 2 are usually fixed setting in positions such as wall, eaves, ceilings, inner casing 3 passes through rotation mechanism in vertical shaft 1
It is suspended in the lower section of top box 2, in components such as the inside of inner casing 3 setting control circuit, imaging sensor, camera lenses.
As shown in Fig. 2, the basic composed structure of rotation mechanism in vertical shaft 1 include rotation axis 10, axle sleeve 11, first bearing 12,
Second bearing 13 and Axial Mounting Part 14.Wherein, rotation axis 10 is arranged on top box 2, and axle sleeve 11 is arranged on inner casing 3.Turn
Moving axis 10 can be usually wholely set with top box 2, so that rotation axis 10 is become a part of top box 2, likewise, axle sleeve 11 and inner casing
3 can also be wholely set.But it is also not excluded for rotation axis 10 in the other embodiment of the application and axle sleeve 11 is individual components
Structure type.
Bearing block 110 is provided on axle sleeve 11, first bearing 12 is arranged in bearing block 110, while axle sleeve 11 and first
Bearing 12 is set in the periphery of rotation axis 10, at this time the independent rotating part of the two of first bearing 12 respectively with axle sleeve 11 and
Rotation axis 10 contacts.In the present embodiment, first bearing 12 be radial bearing or radial thrust bearing, by with axle sleeve 11 and
The contact of rotation axis 10, first bearing 12 can digest the rotatory force between rotation axis 10 and axle sleeve 11, and in rotation axis 10
Higher rotational stability is provided in the radial direction.
Axial Mounting Part 14 is fixedly connected with rotation axis 10, and Axial Mounting Part 14 is extended radially to along rotation axis 10
It is stayed between Axial Mounting Part 14 and axle sleeve 11 because axle sleeve 11 is set in the periphery of rotation axis 10 periphery of rotation axis 10
There is a gap, second bearing 13 is set in rotation axis 10 and in gap, and axle sleeve 11 and Axial Mounting Part 14 are respectively with the
The not ipsilateral of two bearings 13 is fixedly connected.
In the present embodiment, second bearing 13 is plain thrust bearing, therefore axle sleeve 11 and Axial Mounting Part 14 are distinguished
Second bearing 13 can be made to digest turn between axle sleeve 11 and Axial Mounting Part 14 with not ipsilateral be fixedly connected of second bearing 13
Power, since Axial Mounting Part 14 is in the state that is fixedly connected with rotation axis 10, the two is rotated synchronously, therefore axle sleeve 11 and axis
Be also rotation between axle sleeve 11 and rotation axis 10 to the rotation between fixing piece 14, thus the rotation axis 10 in the present embodiment with
Axle sleeve 11 is realized by first bearing 12 and second bearing 13 and is rotatablely connected.
Since second bearing 13 is plain thrust bearing, it is able to bear larger in the axial direction from rotation axis 10
Thrust and small axial displacement only occurs, i.e. the clearance of plain thrust bearing in the axial direction is smaller, offset in this direction
It measures also smaller.Therefore, the present embodiment passes through the mating reaction of first bearing 12 and second bearing 13, can make rotation axis 10 and axis
Offset of the rotation process of set 11 on axially and radially reduces, comprehensive to reduce shaking amplitude, to make rotation process
It is more steady.
In the present embodiment, first bearing 12 can specifically use deep groove ball bearing, angular contact bearing etc., wherein deep-groove ball
Cost is relatively low for bearing, recommends to use.Second bearing 13 can be using needle roller thrust bearing or ball thrust bearing etc..Such as Fig. 3
Shown, second bearing 13 generally includes that the first rotation washer 130, second rotates washer 131 and is folded in the first rotation pad
A circle rolling element 132 between circle 130 and the second rotation washer 131, for needle roller thrust bearing, rolling element 132 is needle roller, right
For ball thrust bearing, rolling element 132 is then ball.First rotation washer 130 is fixedly connected with axle sleeve 11, the second rotation
Washer 131 is fixedly connected with Axial Mounting Part 14.
In the present embodiment, second bearing 13 generallys use compression with axle sleeve 11 and being fixedly connected for Axial Mounting Part 14
The mode of abutting is completed, by the first rotation washer 130 of stiction realization and the rotation washer 131 of axle sleeve 11, second and axially
Fixing piece 14 is fixedly connected.And the size of pressing force is for the stability being fixedly connected and the rolling resistance of rolling element 132
Can generate certain influence, thus pressing force cannot it is excessive can not be too small, if directly by adjusting Axial Mounting Part 14 and axis
Pressing force is adjusted in the mode of the gap size of set 11, due to that can not observe apparent deformation, the adjusting of power
Cheng Shifen is difficult to control.
As shown in Figures 2 and 3, the present embodiment is provided with elastic pressed piece 15, elastic compression inside rotation mechanism in vertical shaft 1
Part 15 can between second bearing 13 and Axial Mounting Part 14, or can also be located at second bearing 13 and axle sleeve 11 it
Between, elastic pressed piece 15 in the raw when, with the occupied axial dimension of second bearing 13 be greater than Axial Mounting Part 14
With the gap between axle sleeve 11, therefore no matter elastic pressed piece 15 is in the which side of second bearing 13, can be compressed, be had
Body, when elastic pressed piece 15 can be between second bearing 13 and Axial Mounting Part 14, second bearing 13 and axial direction are solid
Determine part 14 while squeezing elastic pressed piece 15, and when elastic pressed piece 15 is between second bearing 13 and axle sleeve 11, second
Bearing 13 and axle sleeve 11 squeeze elastic pressed piece 15 jointly.
Elastic pressed piece 15 can generate elastic force after being compressed, and the material of the size of elastic force and elastic pressed piece 15 itself
Expect that performance and deformation quantity are related, therefore can judge the size of pressing force by observing the deformation quantity of elastic pressed piece 15,
Control process is extremely simple quick.In the present embodiment, elastic pressed piece 15 can use corrugated gasket, and structure is simple, easy
In assembly, and the elastic force provided is also more uniform.
In the present embodiment, Axial Mounting Part 14 can usually use bearing (ball) cover, and bearing (ball) cover 14 is (for the ease of reason
Solution, hereafter continues to use the appended drawing reference of Axial Mounting Part) it can connect by the way that the end of the modes such as screw, bonding and rotation axis 10 is fixed
It connects, since it is connect with end, the end of rotation axis 10, Er Feiyan can be moved closer to along the axial direction of rotation axis 10
Radial, this is more convenient for compressing second bearing 13.
In a state of use, bearing (ball) cover 14 is below, and second bearing 13, elastic pressed piece 15, first bearing 12
And axle sleeve 11 etc. is in the top of bearing (ball) cover 14, i.e., bearing (ball) cover 14 will bear these components and entire inner casing 3
Weight, while the elastic force that bearing (ball) cover 14 also needs that elastic pressed piece 15 is overcome to be discharged, therefore the load of bearing (ball) cover 14 is very
Greatly.
And in order to be electrically connected the device inside top box 2 and inner casing 3, it will usually set threading in the middle part card of rotation axis 10
Hole 100, to make rotation axis 10 become a tubular structure, therefore the area of its end is smaller, either bonding is still arranged
Threaded hole will receive limitation, therefore there are the upper limits for the bonding strength between bearing (ball) cover 14 and rotation axis 10.
The extruding to bearing (ball) cover 14 can be increased when the inner casing 3 of video camera is by downward external force, at this time bearing (ball) cover
Fixed connection structure between 14 and rotation axis 10 may disintegrate because of huge load, and rotation mechanism in vertical shaft 1 is caused to damage,
Inner casing 3 falls.
In order to reduce the probability of happening of such case, the present embodiment is also provided with Auxiliary support in rotation mechanism in vertical shaft 1
Part 16, auxiliary supports 16 are fixed in rotation axis 10 and are between second bearing 13 and bearing (ball) cover 14, at this time wave
Line gasket is between second bearing 13 and bearing (ball) cover 14 and is looped around the peripheries of auxiliary supports 16, second bearing 13 and axis
Set 11, which abuts, to be compressed.
When inner casing 3 is moved down by downward external force suddenly, auxiliary supports 16 can prevent inner casing 3 with
And the movement of second bearing 13 etc., before the damage of auxiliary supports 16, bearing (ball) cover 14 only need to bear corrugated gasket deformation and
The elastic force of increase, therefore whole structural stability is higher, inner casing 3 is more difficult to fall.
In the present embodiment, auxiliary supports 16 can be circlip, along the circumferential direction setting of rotation axis 10 in rotation axis 10
There is a circle card slot 101, circlip is fastened in card slot 101.This mounting means is easy to operate, and assembly efficiency is high.
As shown in figure 3, in order to improve the assembly precision of second bearing 13 Yu axle sleeve 11, the present embodiment can be in 11 court of axle sleeve
Limiting section 111, circumferentially extending or arrangement one week of the limiting section 111 along rotation axis 10, example is arranged in the side of fixing piece 14 in the axial direction
If limiting section 111 can be the circle forms such as defining flange or several limited blocks circumferentially arranged.When second bearing 13 with
When axle sleeve 11 abuts compression, limiting section 111 is in the periphery of second bearing 13, so that the present position of second bearing 13 is limited,
Improve assembly precision.
In the present embodiment, although the first rotation washer 130 is fixedly connected with axle sleeve 11, it is limited to oneself of second bearing 13
Body structure, the first rotation washer 130 still needs to surround the setting of rotation axis 10, if the first rotation washer 130 and rotation axis 10
Between there is contact, then will generate friction both during rotation, influence the stability of rotation process.
In order to avoid this problem, continuing with referring to Fig. 3, the present embodiment can be in rotation axis 10 along the week of rotation axis 10
To setting one enclose escape groove 102, when first rotation washer 130 be fixedly connected with axle sleeve 11 when, escape groove 102 just with first turn
Washer 130 is opposite, so that the first rotation washer 130 be avoided directly to contact with rotation axis 10.
As shown in Fig. 2, in the present embodiment, in order to be the connection structure of top box 2 and inner casing 3 due to rotation mechanism in vertical shaft 1,
Therefore in the equipment of (IPX6/7/8) more demanding to waterproofing grade, rotation mechanism in vertical shaft 1 may also include sealing element 17, sealing
Part 17 is arranged on side of the bearing block 110 far from second bearing 13 and the gap between sealed rotation shaft 10 and axle sleeve 11.
In conclusion rotation mechanism in vertical shaft and video camera provided by the present embodiment can reduce the shaking in rotation process
Amplitude.
Emphasis describes the difference between each embodiment, difference between each embodiment in the application foregoing embodiments
As long as optimization feature non-contradiction, can combine to form more preferably embodiment, it is contemplated that style of writing is succinct, then no longer superfluous at this
It states.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (10)
1. a kind of rotation mechanism in vertical shaft, which is characterized in that solid including rotation axis, axle sleeve, first bearing, second bearing and axial direction
Determine part；
Bearing block is provided on the axle sleeve, the first bearing is arranged in the bearing block, the axle sleeve and described first
Bearing is set in the periphery of the rotation axis；
The Axial Mounting Part is fixedly connected with the rotation axis and along the rotation axis of extending radially to of the rotation axis
Periphery, there are gap between the Axial Mounting Part and the axle sleeve, the second bearing is set in the rotation axis and is in
In the gap, the axle sleeve and the Axial Mounting Part are fixedly connected with the not ipsilateral of the second bearing respectively；
The first bearing is radial bearing or radial thrust bearing, and the second bearing is plain thrust bearing, the rotation
Axis and the axle sleeve are rotatablely connected by the first bearing and the second bearing.
2. rotation mechanism in vertical shaft according to claim 1, which is characterized in that it further include elastic pressed piece, the elasticity pressure
Tight part is between the second bearing and the Axial Mounting Part/axle sleeve, and the elastic pressed piece is by described second
Bearing squeezes simultaneously with the Axial Mounting Part/axle sleeve.
3. rotation mechanism in vertical shaft according to claim 2, which is characterized in that the elastic pressed piece is corrugated gasket.
4. rotation mechanism in vertical shaft according to claim 3, which is characterized in that the Axial Mounting Part is bearing (ball) cover, institute
Bearing (ball) cover is stated to be fixedly connected with the end of the rotation axis.
5. rotation mechanism in vertical shaft according to claim 4, which is characterized in that it further include auxiliary supports, the auxiliary branch
Support member is fixed in the rotation axis and is between the second bearing and the bearing (ball) cover, the corrugated gasket position
Between the second bearing and the bearing (ball) cover and it is looped around the peripheries of the auxiliary supports, the second bearing and institute
It states axle sleeve and abuts compression.
6. rotation mechanism in vertical shaft according to claim 5, which is characterized in that the auxiliary supports be circlip, described turn
Circumferential direction on moving axis along the rotation axis is provided with a circle card slot, and the circlip is fastened in the card slot.
7. rotation mechanism in vertical shaft according to claim 5, which is characterized in that the axle sleeve is towards the Axial Mounting Part
Side is provided with limiting section, circumferentially extending or arrangement one week of the limiting section along the rotation axis, when the second bearing and
When the axle sleeve abuts compression, the limiting section is in the periphery of the second bearing.
8. rotation mechanism in vertical shaft according to any one of claims 1 to 7, which is characterized in that the second bearing includes the
One rotation washer, second rotation washer and be folded in it is described first rotation washer and it is described second rotation washer between one
Rolling element is enclosed, the first rotation washer is fixedly connected with the axle sleeve, the second rotation washer and the Axial Mounting Part
It is fixedly connected；
Circumferential direction in the rotation axis along the rotation axis is provided with a circle escape groove, when the first rotation washer and the axis
When set is fixedly connected, the escape groove is opposite with the first rotation washer.
9. rotation mechanism in vertical shaft according to any one of claims 1 to 7, which is characterized in that it further include sealing element, it is described close
Between sealing is arranged in side of the bearing block far from the second bearing and seals between the rotation axis and the axle sleeve
Gap.
10. a kind of video camera, which is characterized in that including top box, inner casing and described in any item horizontal turns of claim 1 to 9
Motivation structure；The rotation axis is arranged on the top box, and the axis is set on the inner casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920065647.0U CN209201191U (en) | 2019-01-15 | 2019-01-15 | Rotation mechanism in vertical shaft and video camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920065647.0U CN209201191U (en) | 2019-01-15 | 2019-01-15 | Rotation mechanism in vertical shaft and video camera |
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| Publication Number | Publication Date |
|---|---|
| CN209201191U true CN209201191U (en) | 2019-08-02 |
Family
ID=67431335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920065647.0U Active CN209201191U (en) | 2019-01-15 | 2019-01-15 | Rotation mechanism in vertical shaft and video camera |
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| CN (1) | CN209201191U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007542A (en) * | 2021-02-07 | 2021-06-22 | 杭州海康威视数字技术股份有限公司 | Horizontal rotating assembly for camera and camera with horizontal rotating assembly |
| CN114640780A (en) * | 2022-05-17 | 2022-06-17 | 杭州海康威视数字技术股份有限公司 | Image pickup apparatus |
-
2019
- 2019-01-15 CN CN201920065647.0U patent/CN209201191U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007542A (en) * | 2021-02-07 | 2021-06-22 | 杭州海康威视数字技术股份有限公司 | Horizontal rotating assembly for camera and camera with horizontal rotating assembly |
| CN114640780A (en) * | 2022-05-17 | 2022-06-17 | 杭州海康威视数字技术股份有限公司 | Image pickup apparatus |
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