CN205401603U - Power take off structure of make a video recording, stabilising arrangement being assisted in photography - Google Patents
Power take off structure of make a video recording, stabilising arrangement being assisted in photography Download PDFInfo
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- CN205401603U CN205401603U CN201620183706.0U CN201620183706U CN205401603U CN 205401603 U CN205401603 U CN 205401603U CN 201620183706 U CN201620183706 U CN 201620183706U CN 205401603 U CN205401603 U CN 205401603U
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- gear
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- resislient
- teeth groove
- flank profil
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Abstract
The utility model provides a power take off structure of make a video recording, stabilising arrangement being assisted in photography, has the output shaft of brush motor to connect the driven shaft through no tooth clearance drive gear subassembly to passive epaxial gear tooth tip circle radius is greater than the epaxial gear tooth tip circle radius of output, the driven shaft is the quill shaft, and the control scheme and/or the power supply circuit of brush motor are worn to be equipped with by its cavity inner chamber. This structure has reduced the cost of product in order there to be brush motor replacement brushless motor dear relatively, the drive ratio of high accuracy has been guaranteed in the output that utilizes no tooth clearance drive gear subassembly to amplify power, output torque can become the improvement of multiplying power, has improved whole driving system's bearing force, can adopt the volume body littleer, the lower motor of output reaches the same output effect, has reduced the product volume, has reduced system power dissipation, prolongs power supply battery's live time. Adopt the linear formula of walking of quill shaft threading, need not to dispose in addition special threading pipeline, can make the structure of whole device compacter to the wiring is convenient.
Description
Technical field
This utility model relates to transmission field, particularly relates to a kind of low-load anti-backlash gear drive mechanism.
Background technology
Development along with social economy and science and technology, people have got used to mobile phone recording image and audiovisual materials in daily life and work very much, in order to adjust shooting distance and angle, steady shot picture, to obtain good shooting effect, various self-shooting bars, the auxiliary stabilizing device such as auto heterodyne support arises at the historic moment.Wherein portioned product additionally uses by the battery-driven micro-machine auxiliary power as stable mobile phone, to reach better stablizing effect.
Shooting, photography auxiliary stabilizing device power output there is significantly high transmission accuracy requirement, to avoid driving error to cause, mobile phone rotates repeatedly, affects shooting effect on the contrary.It is all brushless electric machine because of what generally adopt in the industry, and the power output of motor adopts the mode of directly output.
The price comparison of brushless electric machine is expensive, the cost making product remains high, and in order to meet the requirement of certain output moment of torsion, the volume of motor can be relatively larger, have impact on the contour structures of whole device, be not easy to shooting, photography the carrying with of auxiliary stabilizing device.
Utility model content
Technical problem to be solved in the utility model is in that to provide the power output structure of a kind of shooting, photography auxiliary stabilizing device, this structure is ensureing the high accuracy of transmission while, volume can be adopted less, export lower, more cheap motor and reach identical output effect, thus reducing system power dissipation and production cost.
This utility model is achieved through the following technical solutions:
A kind of shooting, photography auxiliary stabilizing device power output structure, it is characterised in that:
The output shaft of brush motor is by connecting driven axle without backlash driving gear component, and the gear teeth tips radius of circle on driven axle is more than the gear teeth tips radius of circle on output shaft；
Driven axle is quill shaft, and its hollow cavity is coated with control circuit and/or the power circuit of brush motor.
nullThis device replaces relatively costly brushless electric machine with brush motor，Reduce the cost of whole product，And utilize without backlash driving gear component to amplify the output of power，Output moment of torsion can become the raising of multiplying power，Driving gear component without backlash ensures the low-load precision drive field of high accuracy gear ratio while being highly suitable for needing to amplify motor output torque，No matter just、All without occurring owing to there is the idle running phenomenon that backlash causes between gear during reversion，The load capacity of whole dynamical system can be improved，Therefore with do not adopt without backlash driving gear component transmission、The dynamical system of direct output motor moment of torsion is compared，Ensureing the high accuracy of transmission while，Volume can be adopted less，Export less motor to reach identical output effect，Reduce the volume of whole device，And reduce system power dissipation，Extend the use time of supplying cell.Additionally, adopt the cabling form of quill shaft threading, it is not necessary to additionally configure special threading pipeline, it is possible to the structure making whole device is compacter, and connect up conveniently.
Further, following zero-clearance drive mechanism can be adopted without backlash driving gear component: include the first gear being fixed on output shaft without backlash driving gear component, between the upper and lower every the second gear being coaxially fixed on driven axle and the 3rd gear；The tooth surface shape of the second gear and the 3rd gear is identical with gear size；Second gear is flexible gear, is connected by the flexible spokes of some interval configurations between its external toothing and inner wheel hub, around the relative inner wheel hub elastic torsion of driven axle axis, can reply original shape time unloaded during external toothing load；3rd gear is rigid gear, and the flank of tooth of the second gear and the 3rd gear staggers, and the side flank profil of the 3rd gear exposes in the second gear tooth slot corresponding above it；First gear is simultaneously engaged the second gear and the 3rd gear, engagement place, and the both sides flank profil of the first same gear teeth of gear is close to the second gear and the teeth groove sidewall of the 3rd gear opposite side respectively.
When engagement, the gear teeth of the first gear stretch in two teeth groove of the second gear and the 3rd gear correspondence up and down, this gear teeth side flank profil is close to the teeth groove side of the 3rd gear, simultaneously opposite side flank profil extrudes the opposite side teeth groove sidewall that the teeth groove sidewall with above-mentioned 3rd gear of the second gear is relative, the elastic torsion that the external toothing of the second gear is slight, the teeth groove sidewall keeping above-mentioned second gear is close on the first gear, thus realizing without backlash transmission.No matter during rotating, backlash remains zero, it is ensured that the high accuracy of transmission；Simultaneously, the teeth groove of the second gear and the flank profil of the first gear are once leave the position of engagement, and the flank profil of the first gear will unclamp the extruding to the second gear tooth slot sidewall, and this teeth groove is replied original shape, even if do not have between gear to lubricate, stuck without causing gear.Second gear be directly assemblied on driven axle, assembling mode identical with ordinary gear, it is simple to mounting and adjusting.The tip diameter of the first gear is less than the tip diameter of the second gear and the 3rd gear, to amplify output moment of torsion.By adjusting the first gear, the gear ratio of two gear the second gears and the 3rd gear, it is also possible to change the gear ratio of gear flexibly.
Further, flexible spokes is along the second gear radial direction or not along the second gear radial arrangement, sheet-shaped or the elastic rod of the flexible spokes side of being fin shape, curve or other there is the elastic sheet or elastic rod etc. of shape of similar functions, only need to be beneficial to elastic torsion during the second gear external toothing load, and take into account easy to process, service life is persistently.
Further, described flexible spokes is plastics spoke, resin spoke or rubber spoke etc. other both there is certain rigidity, there is again necessarily other similar material spoke elastic.
Further, following zero-clearance drive mechanism can also be adopted without backlash driving gear component: described driving gear component without backlash includes the resislient gear being fixed on output shaft and the rigid gear being fixed on driven axle；Can there is elastic deformation in the flank profil of the resislient gear masterpiece used time outside, the teeth groove of rigid gear is hard rigid teeth groove, and the physical dimension of resislient gear flank profil is be more than or equal to the inner dimensions of rigid gear teeth groove；
Two gear engagement places, the flank profil of the same gear teeth of resislient gear can elastic deformation under the extruding of rigid gear teeth groove cell wall, be close to rigid gear same teeth groove both sides cell wall, making the backlash between resislient gear flank profil and rigid gear teeth groove is zero；After leaving the position of engagement, resislient gear flank profil replys original shape.
Resislient gear tooth tip diameter is less than rigid gear tooth tip diameter, to amplify the output moment of torsion of whole device.Travelling gear is when engagement, and the resislient gear flank profil that physical dimension is bigger is squeezed and diminishes, and both sides flank profil is close to rigid gear both sides teeth groove, and no matter during forward and backward, backlash remains zero, it is ensured that the high accuracy of transmission；Simultaneously, the flank profil of resislient gear and the teeth groove of rigid gear are once leave the position of engagement, and the teeth groove of rigid gear will unclamp the extruding to resislient gear flank profil, and resislient gear is replied original shape, even if do not have between gear to lubricate, stuck without causing gear.Additionally, this structure is not high to the requirement on machining accuracy of resislient gear, only needing the physical dimension of resislient gear flank profil be equal to or be slightly more than the inner dimensions of rigid gear teeth groove, therefore production cost is relatively low.
Further, described resislient gear is gum elastic gear, elastic foam gear, elastic silica gel gear or elastic resin gear etc. other both there is certain rigidity, there is again necessarily other similar material elastic one-body molded.Or, resislient gear can also be the position that other needs such as flank profil engage with rigid gear is gum elastic, elastic foam, and the elastic elastic material such as silicone grease or elastic resin, other position is the resislient gear that rigid assembles.Rigid gear is the integrated hard rigid gears of other similar rigid material such as hard metal gear, rigid plastics gear or hard ceramic gear.
Further, described resislient gear flank profil outer rim shape is corresponding with the teeth groove inner edge shape of rigid gear, is flank profil and the slot form of general gear.The flank profil of resislient gear and rigid gear, slot form all can adopt general flank profil, slot form, rigid gear can directly adopt general part, the flank profil outer rim shape of resislient gear is corresponding thereto, cooperation without special tooth profile, it is easy to utilize existing equipment to process, and elastomeric material is also convenient for processing, in addition, the assembling structure of resislient gear and brush motor output shaft is also adopted by the routine assembling structure of general part, directly can assemble resislient gear on brush motor standard component, brush motor without additional customized special requirement, thus reducing production cost further.
Certainly, the third zero-clearance drive mechanism following can also be adopted without backlash driving gear component: the two panels driven gear utilizing spring to link together is simultaneously engaged on driving gear.Wherein a piece of driven gear and output shaft are fixed, and another sheet driven gear is empty set floating gear sheet on output shaft.This structure make use of the tension force of extension spring, the flank of tooth making two panels driven gear staggers slightly, on the left of the tooth of one plate gear and on the right side of the tooth of another plate gear, it is close to the teeth groove arranged on left and right sides of coupling gear respectively, eliminate the need for backlash by this side set structure, idle running error time reverse, would not be produced.
Further, described output shaft is provided with limited block, limited block side correspondence configuration positive stop, and output shaft can rotate in the angular range that limited block and positive stop limit.By in certain moment of torsion output limiting angle, it is fully able to and has met shooting, the photography auxiliary stabilizing device stability adjustment to mobile phone, output shaft only rotates in limited angle, it is possible to prevents the cable of quill shaft intracavity to be wound around after output shaft rotation multi-turn and is entangled with even around disconnected.
The beneficial effects of the utility model are in that:
1, replace relatively costly brushless electric machine with brush motor, reduce the cost of product；
2, utilize the output amplifying power without backlash driving gear component, no matter during forward and backward all without appearance owing to there is the idle running phenomenon that backlash causes between gear, it is ensured that high-precision gear ratio；
3, output moment of torsion can become the raising of multiplying power, it is possible to increase the load capacity of whole dynamical system；
4, volume can being adopted less, export less motor to reach identical output effect, reduce the volume of product, product structure is more compact, it is simple to carry with, and reduces system power dissipation, extends the use time of supplying cell.
5, adopt the cabling form of quill shaft threading, it is not necessary to additionally configure special threading pipeline, it is possible to the structure making whole device is compacter, and connect up conveniently.
It should be noted that claims are intended merely to a kind of relative position relationship that statement conveniently uses with the upper and lower, left and right position relationship carried in description, it it is not the absolute restriction to described orientation.
Accompanying drawing explanation
Fig. 1 is the gear cooperation position front elevational schematic of a kind of driving gear component without backlash
Fig. 2 is the top view in Fig. 1 without backlash driving gear component
Fig. 3 is the three-dimensional enlarged diagram of Fig. 1 middle gear site of engagement
Fig. 4 is the another kind of gear cooperation position front elevational schematic without backlash driving gear component
In Fig. 1～4: 1 is the first gear, 2 is the second gear, and 201 is external toothing, and 202 is inner wheel hub, and 203 is flexible spokes, 3 is the 3rd gear, and 4 is driven axle, and 5 is output shaft, and 6 is brush motor, 7 is resislient gear, and 8 is rigid gear, and 9 is limited block, and 10 is positive stop.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As it is shown in figure 1, the output shaft 5 of brush motor 6 is by connecting driven axle 4 without backlash driving gear component, and the gear teeth tips radius of circle on driven axle 4 is more than the gear teeth tips radius of circle on output shaft 5；Driven axle 4 is quill shaft, and its empty internal is installed with control circuit and/or power circuit.
As shown in Figures 1 to 3, include the first gear 1 being fixed on output shaft 5 without backlash driving gear component, between the upper and lower every the second gear 2 and the 3rd gear 3 being coaxially fixed on driven axle 4；Second gear 2 is identical with gear size with the tooth surface shape of the 3rd gear 3；Second gear 2 is flexible gear, is connected by the flexible spokes 203 of 4 radially 90 ° of intervals configurations, around driven axle 4 axis relative inner wheel hub 202 elastic torsion, can reply original shape time unloaded during external toothing 201 load between its external toothing 201 and inner wheel hub 202；3rd gear 3 is rigid gear, and the flank of tooth of the second gear 2 and the 3rd gear 3 staggers, and the side flank profil of the 3rd gear 3 exposes in the second gear 2 teeth groove corresponding above it；First gear 1 is simultaneously engaged the second gear 2 and the 3rd gear 3, engagement place, and the both sides flank profil of the first same gear teeth of gear 1 is close to the teeth groove sidewall of the second gear 2 and the 3rd gear 3 opposite side respectively.Second gear 2 is provided with limited block 9, limited block 9 side correspondence configuration positive stop 10, and output shaft 5 can limit at limited block 9 and positive stop 10, the close ± 175 ° of angular ranges rotations that are positioned at limited block 9 both sides, to prevent cable winds.
First gear 1 is simultaneously engaged the second gear 2 and the 3rd gear 3 engagement place, flexible spokes 203 elastic deformation near second gear 2 at this place, the elastic torsion that external toothing 201 is slight, the both sides flank profil of the first same gear teeth of gear 1 is close to the teeth groove sidewall of the second gear 2 and the 3rd gear 3 opposite side respectively.Therefore no matter brush motor 6 forward and backward time, the first gear 1, the second gear 2 and the 3rd gear 3 are all in the engagement without backlash, do not have idle running, the rotational angle accurate positioning of whole drive mechanism, it is ensured that the high accuracy of transmission, and the output moment of torsion of brush motor 6 can be amplified at double.
As shown in Figure 4, the resislient gear 7 being fixed on output shaft 5 and the rigid gear 8 being fixed on driven axle 4 are included without backlash driving gear component；Resislient gear 7 flank profil outer rim shape is corresponding with the teeth groove inner edge shape of rigid gear 8, is flank profil and the slot form of general gear.The flank profil of the resislient gear 7 masterpiece used time outside can occur elastic deformation, the teeth groove of rigid gear 8 to be hard rigid teeth groove, and the physical dimension of resislient gear 7 flank profil is be more than or equal to the inner dimensions of rigid gear 8 teeth groove；Two gear engagement places, the flank profil of the same gear teeth of resislient gear 7 can elastic deformation under the extruding of rigid gear 8 teeth groove cell wall, be close to rigid gear 8 same teeth groove both sides cell wall, making the backlash between resislient gear 7 flank profil and rigid gear 8 teeth groove is zero；After leaving the position of engagement, resislient gear 7 flank profil replys original shape.
No matter during motor forward and backward, resislient gear 1 and rigid gear 2, all in the engagement without backlash, do not have idle running, the rotational angle accurate positioning of whole drive mechanism, it is ensured that the high accuracy of transmission.
Claims (8)
1. a shooting, photography auxiliary stabilizing device power output structure, it is characterised in that:
The output shaft (5) of brush motor (6) is by connecting driven axle (4) without backlash driving gear component, and the gear teeth tips radius of circle on driven axle (4) is more than the gear teeth tips radius of circle on output shaft (5)；
Driven axle (4) is quill shaft, and its hollow cavity is coated with control circuit and/or the power circuit of brush motor (6).
2. shooting according to claim 1, photography auxiliary stabilizing device power output structure, it is characterized in that: described driving gear component without backlash includes the first gear (1) being fixed on output shaft (5), between the upper and lower every the second gear (2) being coaxially fixed on driven axle (4) and the 3rd gear (3)；
Second gear (2) is identical with gear size with the tooth surface shape of the 3rd gear (3)；
Second gear (2) is flexible gear, it is connected by the flexible spokes (203) of some interval configurations between its external toothing (201) and inner wheel hub (202), around driven axle (4) axis relative inner wheel hub (202) elastic torsion, original shape time unloaded, can be replied during external toothing (201) load；
3rd gear (3) is rigid gear, and the flank of tooth of the second gear (2) and the 3rd gear (3) staggers, and the side flank profil of the 3rd gear (3) exposes in the second gear (2) teeth groove corresponding above it；
First gear (1) is simultaneously engaged the second gear (2) and the 3rd gear (3), engagement place, the both sides flank profil of the first gear (1) the same gear teeth is close to the second gear (2) and the teeth groove sidewall of the 3rd gear (3) opposite side respectively.
3. shooting according to claim 2, photography auxiliary stabilizing device power output structure, it is characterized in that: described flexible spokes (203) is along the second gear (2) radial direction or not along the second gear (2) radial arrangement, flexible spokes (203) side of being fin shape, the sheet-shaped or elastic rod of curve.
4. shooting according to claim 2, photography auxiliary stabilizing device power output structure, it is characterised in that: described flexible spokes (203) is plastics spoke, resin spoke or rubber spoke.
5. shooting according to claim 1, photography auxiliary stabilizing device power output structure, it is characterised in that: described driving gear component without backlash includes the resislient gear (7) being fixed on output shaft (5) and the rigid gear (8) being fixed on driven axle (4)；
Elastic deformation can be there is in the flank profil of resislient gear (7) the masterpiece used time outside, the teeth groove of rigid gear (8) is hard rigid teeth groove, and the physical dimension of resislient gear (7) flank profil is be more than or equal to the inner dimensions of rigid gear (8) teeth groove；
Two gear engagement places, the flank profil of resislient gear (7) the same gear teeth can elastic deformation under the extruding of rigid gear (8) teeth groove cell wall, being close to rigid gear (8) same teeth groove both sides cell wall, making the backlash between resislient gear (7) flank profil and rigid gear (8) teeth groove is zero；After leaving the position of engagement, resislient gear (7) flank profil replys original shape.
6. shooting according to claim 5, photography auxiliary stabilizing device power output structure, it is characterised in that: described resislient gear (7) is gum elastic gear, elastic foam gear, elastic silica gel gear or elastic resin gear；Described rigid gear (8) is hard metal gear, rigid plastics gear or hard ceramic gear.
7. shooting according to claim 5, photography auxiliary stabilizing device power output structure, it is characterized in that: described resislient gear (7) flank profil outer rim shape is corresponding with the teeth groove inner edge shape of rigid gear (8), is flank profil and the slot form of general gear.
8. shooting according to claim 1, photography auxiliary stabilizing device power output structure, it is characterized in that: described output shaft (5) is provided with limited block (9), limited block (9) side correspondence configuration positive stop (10), output shaft (5) can rotate in the angular range that limited block (9) and positive stop (10) limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620183706.0U CN205401603U (en) | 2016-03-10 | 2016-03-10 | Power take off structure of make a video recording, stabilising arrangement being assisted in photography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620183706.0U CN205401603U (en) | 2016-03-10 | 2016-03-10 | Power take off structure of make a video recording, stabilising arrangement being assisted in photography |
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| Publication Number | Publication Date |
|---|---|
| CN205401603U true CN205401603U (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620183706.0U Expired - Fee Related CN205401603U (en) | 2016-03-10 | 2016-03-10 | Power take off structure of make a video recording, stabilising arrangement being assisted in photography |
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| Country | Link |
|---|---|
| CN (1) | CN205401603U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210149A (en) * | 2018-10-18 | 2019-01-15 | 重庆长安工业(集团)有限责任公司 | Three side teeth of one kind are without backlash gear |
| CN109617314A (en) * | 2019-01-25 | 2019-04-12 | 深圳市泓之发机电有限公司 | Gear transmission structure and corresponding motor |
-
2016
- 2016-03-10 CN CN201620183706.0U patent/CN205401603U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210149A (en) * | 2018-10-18 | 2019-01-15 | 重庆长安工业(集团)有限责任公司 | Three side teeth of one kind are without backlash gear |
| CN109617314A (en) * | 2019-01-25 | 2019-04-12 | 深圳市泓之发机电有限公司 | Gear transmission structure and corresponding motor |
| CN109617314B (en) * | 2019-01-25 | 2024-01-30 | 深圳市泓之发机电股份有限公司 | Gear transmission structure and corresponding motor |
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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 |
Granted publication date: 20160727 Termination date: 20210310 |
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| CF01 | Termination of patent right due to non-payment of annual fee |