CN201281004Y - Torsion spring rotation gear and safety and defence camera head - Google Patents

Torsion spring rotation gear and safety and defence camera head Download PDF

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Publication number
CN201281004Y
CN201281004Y CNU2008200960538U CN200820096053U CN201281004Y CN 201281004 Y CN201281004 Y CN 201281004Y CN U2008200960538 U CNU2008200960538 U CN U2008200960538U CN 200820096053 U CN200820096053 U CN 200820096053U CN 201281004 Y CN201281004 Y CN 201281004Y
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CN
China
Prior art keywords
torsion spring
driven shaft
fixed
fixed limit
spare
Prior art date
Application number
CNU2008200960538U
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Chinese (zh)
Inventor
伍志坚
Original Assignee
深圳市艾立克电子有限公司
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Priority to CNU2008200960538U priority Critical patent/CN201281004Y/en
Application granted granted Critical
Publication of CN201281004Y publication Critical patent/CN201281004Y/en

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Abstract

The utility model relates to a torsion spring rotating mechanism and a security and defense cradle head applied to the torsion spring rotating mechanism. The security and defense cradle head comprises a main bracket, a driven shaft which can rotate along the positive or reverse direction, and a camera component; a torsion spring is sheathed at the outer circumstance of the driven shaft and comprises a first end and a second end which are separately arranged; a fixing limiting part for limiting the first end and the second end of the torsion spring is arranged on the main bracket; a moving limiting part is fixedly arranged on the driven shaft, and presses the first end of the torsion spring for pressing the spring when the driven shaft rotates along the positive direction, and presses the second end of the torsion spring for pressing the spring when the driven shaft rotates along the reverse direction. By utilizing that the moving limiting part presses the first end and the second end of the torsion respectively when the rotating shaft (the driven shaft) rotates along the positive or reverse direction, thus leading the spring to be positioned in a pressed condition, namely, the torsion spring moves constantly in a maximum permitting elastic deformation range, therefore, the service life of the torsion spring is increased and the probability of the torsion spring fracturing is reduced owning to large elastic deformation.

Description

Torsion spring rotation gear and security tripod head
Technical field
The utility model relates to rotational structure and security tripod head structure, more particularly, and the security tripod head that relates to a kind of torsion spring rotation gear and use this structure.
Background technique
Torsion spring is applied in the industry-by-industries such as electronics, machinery widely as energy-storage travelling wave tube.In some rotating mechanisms, torsion spring also can be used as the energy storage reposition element, and for example in the security protection industry, torsion spring is applied in the The Cloud Terrace, for resetting of driven shaft provides energy.
As shown in Figure 1, be the structural representation of existing security tripod head, comprise master bracket 901, clockwise and anticlockwise motor 902 is installed in the bottom of master bracket 901, on the top of master bracket 901 driven shaft 903 is installed, clockwise and anticlockwise motor 902 drives driven shaft 903 by belt wheel group and rotates.Top at master bracket 901 is provided with camera assembly, and this camera assembly is fixedly mounted on the driven shaft 903, is driven by driven shaft 903 and rotates.One section outside that reaches master bracket 901 of driven shaft 903 is used to install torsion spring 905 assemblies.On the section of stretching out of this driven shaft 903, be arranged with torsion spring cylinder 904 is installed, install on the cylinder 904 at torsion spring and be arranged with torsion spring 905; And,, use screw 906 to be installed with torsion spring block 907 at the end of the section of stretching out of driven shaft 903.Be respectively equipped with jack 908 on the outer wall of torsion spring block 907 and master bracket 901, torsion spring 905 two ends are inserted into respectively in the jack 908 of torsion spring block 907 and master bracket 901.
Torsion spring 905 among the figure is to adopt left-handed torsion spring 905, when driving driven shafts 903, does when clockwise rotating by motor 902, torsion spring block 907 is also done clockwise motion, because an end of torsion spring 905 is fixed on the master bracket 901, this moment, the other end of torsion spring block 907 drive torsion springs 905 was done clockwise motion, and then compression torsion spring 905 generation elastic potential energys, in order to using; The torsion spring 905 of this moment is compressed, and its available elastic strain is bigger, and working life is longer.
When driving driven shafts 903, does when rotating counterclockwise by motor 902, torsion spring block 907 is also done counterclockwise motion, because an end of torsion spring 905 is fixed on the master bracket 901, this moment, the other end of torsion spring block 907 drive torsion springs 905 was done counterclockwise motion, and then compression torsion spring 905 generation elastic potential energys, in order to using; The torsion spring 905 of this moment is (promptly the having the trend that torsion spring 905 is drawn back) that are stretched, and its available elastic strain is less, thereby can cause short defective in working life.
Even use dextrorotation torsion spring 905, in the time of also can existing driven shaft 903 to move counterclockwise, torsion spring 905 is compressed, and its available elastic strain is bigger, and working life is longer; And when driven shaft 903 moved clockwise, torsion spring 905 was stretched, and its available elastic strain is less, and working life is shorter.
As seen, particularly in the The Cloud Terrace of security protection equipment, there is the situation that torsion spring is stretched, working life is short in existing torsion spring mounting structure all the time, is unfavorable for the long-time use of equipment.
The model utility content
The technical problems to be solved in the utility model is, has the defective of situation about being stretched all the time at the above-mentioned torsion spring rotation gear of prior art, provides a kind of torsion spring that makes all the time at the torsion spring rotation gear of confined state work.
Another technical problem to be solved in the utility model is, has the defective of situation about being stretched all the time at the torsion spring of the above-mentioned security tripod head of prior art, provides a kind of torsion spring that makes all the time at the security tripod head of confined state work.
The technological scheme that its technical problem that solves the utility model adopts is: provide a kind of torsion spring rotation gear, the rotating shaft that comprises support, is installed on the described support and can rotates forward or backwards; Outer race in described rotating shaft is provided with torsion spring, and described torsion spring comprises first end and second end that branch is arranged;
Be fixed with first end of spacing described torsion spring of while and the fixed limit spare of second end on the described support;
Be fixed with motion limit stops in the described rotating shaft, described motion limit stops is suppressed first end of described torsion spring and second the bringing in and cooperate the described torsion spring of compression of the spacing described torsion spring of described fixed limit spare when described rotating shaft forward rotation, and described motion limit stops is suppressed second end of described torsion spring and first the bringing in and cooperate the described torsion spring of compression of the spacing described torsion spring of described fixed limit spare when described rotating shaft backward rotation.
In torsion spring rotation gear of the present utility model, the circular sleeve fixed limit piece that described fixed limit spare is an opening, the both sides of the edge of the opening of described sleeve fixed limit piece are corresponding with the position of first end of described torsion spring and second end.
In torsion spring rotation gear of the present utility model, described motion limit stops is the circular sleeve sports limiting piece of the opening that is nested with described sleeve fixed limit piece, and the both sides of the edge of the opening of described sleeve sports limiting piece are corresponding with the position of first end of described torsion spring and second end.
In torsion spring rotation gear of the present utility model, the both sides of the edge of the opening of described sleeve sports limiting piece and described first end and the corresponding position of second end offer bayonet socket.
In torsion spring rotation gear of the present utility model, described torsion spring is left-handed torsion spring or dextrorotation torsion spring; Described fixed limit spare and described motion limit stops all are arranged on the upside or the downside of described rotating shaft.
In torsion spring rotation gear of the present utility model, described rotating shaft outer race is provided with torsion spring cylinder is installed; Described torsion spring is sheathed to be installed in described torsion spring cylinder peripheral is installed.
The utility model solves the technological scheme that its another technical problem takes and provides a kind of security tripod head, comprises master bracket, is installed on the described master bracket and the driven shaft that can rotate forward or backwards and be fixedly mounted on camera assembly on the described driven shaft; The outer race of described driven shaft is provided with torsion spring, and described torsion spring comprises first end and second end that branch is arranged;
Be fixed with first end of spacing described torsion spring of while and the fixed limit spare of second end on the described master bracket;
Be fixed with motion limit stops on the described driven shaft, described motion limit stops is suppressed first end of described torsion spring and second the bringing in and cooperate the described torsion spring of compression of the spacing described torsion spring of described fixed limit spare when described driven shaft forward rotation, and described motion limit stops is suppressed second end of described torsion spring and first the bringing in and cooperate the described torsion spring of compression of the spacing described torsion spring of described fixed limit spare when described driven shaft backward rotation.
In security tripod head of the present utility model, the top of described master bracket is provided with " U " shape installation position that described camera assembly is installed, and described driven shaft stretches out the described master bracket formation section of stretching out for one section;
Described torsion spring is installed on the section of stretching out of described driven shaft, and the position of described fixed limit spare and motion limit stops is corresponding with described torsion spring.
In security tripod head of the present utility model, the circular sleeve fixed limit piece that described fixed limit spare is an opening, the both sides of the edge of the opening of described sleeve fixed limit piece are corresponding with the position of first end of described torsion spring and second end; Described motion limit stops is the circular sleeve sports limiting piece of the opening that is nested with described sleeve fixed limit piece, and the both sides of the edge of the opening of described sleeve sports limiting piece are corresponding with the position of first end of described torsion spring and second end.
In security tripod head of the present utility model, described torsion spring is left-handed torsion spring or dextrorotation torsion spring; Described fixed limit spare and described motion limit stops all are arranged on the upside or the downside of described rotating shaft.
Enforcement the utlity model has following beneficial effect: by motion limit stops when rotating shaft (driven shaft) forward, the backward rotation, suppress first end and second end of torsion spring respectively, make torsion spring be in compressed state all the time, that is to say that torsion spring moves all the time in the permission regime of elastic deformation of its maximum, thereby its available resiliently deformable is bigger, increase the working life of torsion spring, reduced the possibility of torsion spring fracture.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the decomposition texture schematic representation of the security tripod head of prior art;
Fig. 2 is the decomposition texture schematic representation of a specific embodiment of security tripod head of the present utility model;
Fig. 3 is the schematic side view after a specific embodiment of security tripod head of the present utility model is assembled;
Fig. 4 is the front schematic view after a specific embodiment of security tripod head of the present utility model is assembled;
Fig. 5 is the schematic perspective view of torsion spring of a specific embodiment of security tripod head of the present utility model.
Embodiment
Extremely shown in Figure 5 as Fig. 2, be a specific embodiment of the security tripod head of application torsion spring 17 rotating mechanisms of the present utility model, understandable, torsion spring 17 rotating mechanisms also can be applied in other the rotating mechanism, as energy storage component, provide the energy of rotation when needing.Be specifically described with its example that is applied to security tripod head below.
This security tripod head comprises master bracket 11 (support), be installed in driven shaft 12 (rotating shaft) on the master bracket 11, be fixed on camera assembly on the driven shaft 12 etc.As shown in the figure, the bottom of the master bracket 11 of this security tripod head also is equipped with clockwise and anticlockwise motor 13, and driven shaft 12 is installed in the top of master bracket 11, and this clockwise and anticlockwise motor 13 drives the rotation forward or backwards of driven shaft 12 dos by belt wheel group 14.Top at master bracket 11 is provided with " U " shape fluting, is used to install camera assembly.This camera assembly comprises fitting seat 15 and is fixedly mounted on vidicon camera on the fitting seat 15 (figure does not show).This fitting seat 15 is fixedlyed connected with driven shaft 12, is driven by driven shaft 12 and rotates, thereby drive the vidicon camera rotating certain angle.
As shown in the figure, master bracket 11 is provided with mounting hole, and driven shaft 12 wears by bearing 16 and is installed on the mounting hole.Belt wheel group 14 is arranged on a side of master bracket 11, drives driven shaft 12 and rotates; And the other end of driven shaft 12 stretches out master bracket 11, forms the section of stretching out.Be arranged with torsion spring 17 on this section of stretching out, this torsion spring 17 can be installed cylinder by torsion spring and be installed on this section of stretching out.This torsion spring is installed cylinder can adopt plastic cylinder, rubber cylinder etc., plays the effect of supporting torsion spring 17.As shown in Figure 5, this torsion spring 17 comprises first end 171 and second end 172 that branch is arranged, and in the present embodiment, this first end 171 and second end 172 are symmetrically distributed in the both sides of the axis of torsion spring 17, thereby make things convenient for the operation of motion limit stops.Certainly, first end 171 and second end 172 also can be designed to have certain angle.
Outer wall at master bracket 11 is fixed with fixed limit spare 19, simultaneously first end 171 and second end 172 of spacing torsion spring 17.In the present embodiment, this fixed limit spare 19 is a circular sleeve fixed limit piece, is provided with opening on the fixed limit piece, utilizes first end 171 and second end 172 of the next spacing torsion spring 17 in both sides of the edge of opening.
End at driven shaft 12 is installed with movable bounding means 20, and this activity bounding means 20 is with driven shaft 12 forward rotation or backward rotation, and then stirs first end 171 or second end 172 of torsion spring 17.In the present embodiment, this motion limit stops for and sleeve fixed limit piece circular sleeve sports limiting that be nested, segmentation piece, first end 171 of the both sides of the edge of this sports limiting piece and torsion spring 17 and the position of second end 172 are corresponding.In order better to locate the end of torsion spring 17, the both sides of the edge of the opening of sports limiting piece and first end 171 and second end, 172 corresponding positions offer bayonet socket 201, thereby when the sports limiting piece rotates, first end 171 or second end 172 of torsion spring 17 snap onto in the bayonet socket 201, make slip that torsion spring 17 can be not random, displacement etc.The front end of this activity limiting stopper is provided with joint 202, and this joint 202 is provided with attachment hole 203.In the present embodiment, the sectional shape of the end of driven shaft 12 is square or waist shape, and the sectional shape of corresponding attachment hole 203 also is square or waist shape.During assembling, movable limiting stopper is inserted into the end of driven shaft 12 by attachment hole 203, and uses screw 21 and pad 22 lockings, thereby movable limiting stopper is fixedlyed connected with driven shaft 12, and drives rotation by driven shaft 12.Understandable, fixedlying connected between movable limiting stopper and the driven shaft 12 can also be by existing variety of way.
Fixed limit spare 19 and motion limit stops also can adopt other mechanism form, such as but not limited to: fixed limit spare 19 adopt two separation, with first end 171 of torsion spring 17 and the corresponding limiting stopper of second end 172; And movable bounding means 20 also can adopt two separation, be fixed on the turning lever on the driven shaft 12, thereby stir first end 171 and second end 172 of torsion spring 17 respectively.
As shown in the figure, what the torsion spring of present embodiment 17 adopted is left-handed torsion spring, when guaranteeing that motion limit stops is rotated, makes torsion spring 17 be in the state of compression all the time, and this fixed limit spare 19 and motion limit stops all are arranged on the upside of driven shaft 12.Understandable, when this torsion spring 17 also can adopt the dextrorotation torsion spring.And fixed limit spare 19 and motion limit stops also can be arranged on the downside of driven shaft 12.
When motor 13 drives driven shaft 12 forward rotation by belt wheel group 14, motion limit stops is made forward rotation under the drive of driven shaft 12, at this moment, one side margin of the opening of motion limit stops is suppressed first end 171 of torsion spring 17 from top to bottom, second end 172 of torsion spring 17 then has the trend of upwards rotating, but the bounding means 19 that is fixed stops and can't move, thereby makes torsion spring 17 be in compressive state and produce elastic potential energy; When needs turned round, spring just can increase the power of reversed turning.
Otherwise, when motor 13 drives driven shaft 12 backward rotation by belt wheel group 14, motion limit stops is made backward rotation under the drive of driven shaft 12, at this moment, second end 172 of torsion spring 17 is suppressed at the opposite side edge of the opening of motion limit stops from top to bottom, first end 171 of torsion spring 17 then has the trend of upwards rotating, but the bounding means 19 that is fixed stops and can't move, thereby makes torsion spring 17 be in compressive state and produce elastic potential energy; When needs turned round, spring just can increase the rotating power of forward.
Of the present utility model simple in structure, easy for installation, use motion limit stops dexterously in the process of back and forth movement, push down torsion spring 17, can both produce required elastic potential energy at positive and negative both direction, spring can move in the elasticity sex change scope of its permission all the time, so, available resiliently deformable is bigger, and has increased spring working life, has reduced the possibility of spring breakage.

Claims (10)

1, a kind of torsion spring rotation gear, the rotating shaft that comprises support, is installed on the described support and can rotates forward or backwards; It is characterized in that be provided with torsion spring in the outer race of described rotating shaft, described torsion spring comprises first end and second end that branch is arranged;
Be fixed with first end of spacing described torsion spring of while and the fixed limit spare of second end on the described support;
Be fixed with motion limit stops in the described rotating shaft, described motion limit stops is suppressed first end of described torsion spring and second the bringing in and cooperate the described torsion spring of compression of the spacing described torsion spring of described fixed limit spare when described rotating shaft forward rotation, and described motion limit stops is suppressed second end of described torsion spring and first the bringing in and cooperate the described torsion spring of compression of the spacing described torsion spring of described fixed limit spare when described rotating shaft backward rotation.
2, torsion spring rotation gear according to claim 1, it is characterized in that, the circular sleeve fixed limit piece that described fixed limit spare is an opening, the both sides of the edge of the opening of described sleeve fixed limit piece are corresponding with the position of first end of described torsion spring and second end.
3, torsion spring drive mechanism according to claim 2, it is characterized in that, described motion limit stops is the circular sleeve sports limiting piece of the opening that is nested with described sleeve fixed limit piece, and the both sides of the edge of the opening of described sleeve sports limiting piece are corresponding with the position of first end of described torsion spring and second end.
4, torsion spring drive mechanism according to claim 3 is characterized in that, the both sides of the edge of the opening of described sleeve sports limiting piece and described first end and the corresponding position of second end offer bayonet socket.
According to each described torsion spring rotation gear among the claim 1-4, it is characterized in that 5, described torsion spring is left-handed torsion spring or dextrorotation torsion spring; Described fixed limit spare and described motion limit stops all are arranged on the upside or the downside of described rotating shaft.
6, torsion spring rotation gear according to claim 5 is characterized in that, described rotating shaft outer race is provided with torsion spring cylinder is installed; Described torsion spring is sheathed to be installed in described torsion spring cylinder peripheral is installed.
7, a kind of security tripod head, the driven shaft that comprises master bracket, is installed on the described master bracket and can rotates forward or backwards and be fixedly mounted on camera assembly on the described driven shaft; It is characterized in that the outer race of described driven shaft is provided with torsion spring, described torsion spring comprises first end and second end that branch is arranged;
Be fixed with first end of spacing described torsion spring of while and the fixed limit spare of second end on the described master bracket;
Be fixed with motion limit stops on the described driven shaft, described motion limit stops is suppressed first end of described torsion spring and second the bringing in and cooperate the described torsion spring of compression of the spacing described torsion spring of described fixed limit spare when described driven shaft forward rotation, and described motion limit stops is suppressed second end of described torsion spring and first the bringing in and cooperate the described torsion spring of compression of the spacing described torsion spring of described fixed limit spare when described driven shaft backward rotation.
8, security tripod head according to claim 7 is characterized in that, the top of described master bracket is provided with " U " shape installation position that described camera assembly is installed, and described driven shaft stretches out the described master bracket formation section of stretching out for one section;
Described torsion spring is installed on the section of stretching out of described driven shaft, and the position of described fixed limit spare and motion limit stops is corresponding with described torsion spring.
9, security tripod head according to claim 8 is characterized in that, described fixed limit spare is the circular sleeve fixed limit piece of opening, and the both sides of the edge of the opening of described sleeve fixed limit piece are corresponding with the position of first end of described torsion spring and second end; Described motion limit stops is the circular sleeve sports limiting piece of the opening that is nested with described sleeve fixed limit piece, and the both sides of the edge of the opening of described sleeve sports limiting piece are corresponding with the position of first end of described torsion spring and second end.
According to each described security tripod head of claim 7-9, it is characterized in that 10, described torsion spring is left-handed torsion spring or dextrorotation torsion spring; Described fixed limit spare and described motion limit stops all are arranged on the upside or the downside of described rotating shaft.
CNU2008200960538U 2008-08-01 2008-08-01 Torsion spring rotation gear and safety and defence camera head CN201281004Y (en)

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Application Number Priority Date Filing Date Title
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CN201281004Y true CN201281004Y (en) 2009-07-29

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010012198A1 (en) * 2008-08-01 2010-02-04 深圳市艾立克电子有限公司 Torsion spring rotational mechanism and security tripod head
CN101790045B (en) * 2009-12-09 2011-09-07 深圳市艾立克电子有限公司 Camera driving device
CN104754326A (en) * 2015-03-13 2015-07-01 北京科旭威尔科技有限公司 Mechanism capable of accurately positioning zooming position of camera

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010012198A1 (en) * 2008-08-01 2010-02-04 深圳市艾立克电子有限公司 Torsion spring rotational mechanism and security tripod head
CN101368546B (en) * 2008-08-01 2010-06-09 深圳市艾立克电子有限公司 Torsion spring rotation gear and security tripod head
CN101790045B (en) * 2009-12-09 2011-09-07 深圳市艾立克电子有限公司 Camera driving device
CN104754326A (en) * 2015-03-13 2015-07-01 北京科旭威尔科技有限公司 Mechanism capable of accurately positioning zooming position of camera
CN104754326B (en) * 2015-03-13 2017-05-24 北京科旭威尔科技股份有限公司 Mechanism capable of accurately positioning zooming position of camera

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AV01 Patent right actively abandoned

Granted publication date: 20090729

Effective date of abandoning: 20080801