CN105305693A - Shell structure of pan-tilt control motor, pan-tilt control motor and pan-tilt structure - Google Patents
Shell structure of pan-tilt control motor, pan-tilt control motor and pan-tilt structure Download PDFInfo
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- CN105305693A CN105305693A CN201510771893.4A CN201510771893A CN105305693A CN 105305693 A CN105305693 A CN 105305693A CN 201510771893 A CN201510771893 A CN 201510771893A CN 105305693 A CN105305693 A CN 105305693A
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- potentiometer
- motor
- cradle head
- motor shaft
- control motor
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Abstract
The invention discloses a shell structure of a pan-tilt control motor, the pan-tilt control motor and a pan-tilt structure. The shell structure can comprises a motor shell and a limiting bulge; an opening is formed in one end plane of the motor shell for allowing the motor shaft of the control motor to extend out of the motor shell; the limiting bulge, coaxial with the motor shaft, is arranged on the end plane of the motor shell; and a limiting ring is formed by the inner wall of the limiting bulge and the outer wall of the motor shaft for realizing the limitation on a potentiometer in the pan-tilt structure. By adoption of the disclosed technical scheme, the coaxial assembling of the potentiometer and the motor shaft in the pan-tilt structure can be simply and efficiently realized so as to dramatically improve the production efficiency of the pan-tilt structure.
Description
Technical field
The disclosure relates to field of terminal technology, particularly relates to a kind of shell structure of cradle head control motor, cradle head control motor and cradle head structure.
Background technology
Cradle head structure can carry camera head, to realize the Angle ambiguity to camera head.For example, when cradle head structure is applied to the aerial photography function of unmanned plane, this cradle head structure can angularly realize accurate control to the course angle of camera head on unmanned plane, the angle of pitch, roll angle, realize stable following or the shooting of arbitrarily angled attitude, be the rotational angle by detecting real-time horizontal stage electric machine, and accurately control horizontal stage electric machine and rotate and realize.
Be built-in with mechanical type potentiometer in cradle head structure, potentiometer is set on the motor shaft that penetrates in cradle head structure, thus controls current angular and the rotational angle of motor by detecting, realizes accurate Angle ambiguity.
But accurate Angle ambiguity exists very high requirement for the axiality between potentiometer and motor shaft, coaxiality deviation is large else if, and motor shaft is subject to the pulling force of potentiometer transverse direction, and rotation can have some setbacks, and the detecting of potentiometer is also inaccurate.
Summary of the invention
The disclosure provides a kind of shell structure of cradle head control motor, cradle head control motor and cradle head structure, to solve the deficiency in correlation technique.
According to the first aspect of disclosure embodiment, a kind of shell structure of cradle head control motor is provided, comprises:
Motor casing, the end face of described motor casing is provided with an opening, and the motor shaft for described control motor stretches out by described motor casing;
Spacing preiection, described spacing preiection is coaxially arranged on the described end face of motor casing in described motor shaft, and the outer wall of the inwall of described spacing preiection and described motor shaft surrounds spacing ring, spacing with what realize potentiometer in The Cloud Terrace.
Optionally, described spacing preiection is the annular gusset being located at described opening part.
Optionally, described spacing preiection is the annular gusset being located at described opening part.
Optionally, described spacing preiection comprises multiple position-limiting units of non-linear configuration, and there is gap between adjacent position-limiting unit.
Optionally, described spacing preiection is at least two arc sections being located at described opening part.
Optionally, multiple position-limiting unit is centrosymmetric around the axle center of described motor shaft setting.
Optionally, described motor casing and described spacing preiection are formed in one structure.
According to the second aspect of disclosure embodiment, a kind of cradle head control motor is provided, comprises: the shell structure of the cradle head control motor according to any one of above-described embodiment.
According to the third aspect of disclosure embodiment, a kind of cradle head structure is provided, comprises:
Support, be installed on potentiometer on printed circuit board (PCB) and cradle head control motor, described cradle head control motor is configured with the shell structure of the cradle head control motor according to any one of above-described embodiment;
Wherein, a side end face of described support is provided with first installing hole that can penetrate for described motor shaft and described spacing preiection; Described potentiometer is located in described support, and described potentiometer is provided with second installing hole that can pass for described motor shaft, described second installing hole is also provided with near the end face periphery of described first installing hole coaxially in described second installing hole, the spacing plug that matches with described spacing ring.
Optionally, described potentiometer is installed on the side of described printed circuit board (PCB) away from described first installing hole, and described printed circuit board (PCB) is positioned at described second installing hole place and offers the pilot hole being matched with described spacing ring.
Optionally, described printed circuit board (PCB) comprises the some screw holes carrying out with described support assembling, and the aperture R of each screw hole meets:
R1+a×2≤R＜R2
Wherein, R1 is the diameter in the lead screw portion that described screw hole is corresponding, and a is the maximum displacement error amount of described potentiometer when being mounted to described printed circuit board (PCB), and R2 is the diameter of the screw head that described screw hole is corresponding.
The technical scheme that embodiment of the present disclosure provides can comprise following beneficial effect:
From above-described embodiment, the disclosure by arranging spacing preiection in the shell structure of cradle head control motor, and surround spacing ring by spacing preiection and motor shaft, make this spacing ring can by the cooperation in mechanical structure, realize precisely spacing to potentiometer, thus the high-axiality assembling between motor shaft and potentiometer can be guaranteed by simple architecture advances, significantly can promote the production efficiency of cradle head structure.
Should be understood that, it is only exemplary and explanatory that above general description and details hereinafter describe, and can not limit the disclosure.
Accompanying drawing explanation
Accompanying drawing to be herein merged in specification and to form the part of this specification, shows and meets embodiment of the present disclosure, and is used from specification one and explains principle of the present disclosure.
Figure 1A is the perspective view of the cradle head control motor in correlation technique.
Figure 1B is the perspective view of a kind of cradle head control motor according to an exemplary embodiment.
Fig. 2 is the decomposing schematic representation of a kind of cradle head structure according to an exemplary embodiment.
Fig. 3 is the perspective view of a kind of potentiometer according to an exemplary embodiment.
Fig. 4 is the cutaway view of a kind of cradle head structure according to an exemplary embodiment.
Fig. 5 is the decomposing schematic representation of the another kind of cradle head structure according to an exemplary embodiment.
Fig. 6 is the perspective view of the another kind of cradle head control motor according to an exemplary embodiment.
Embodiment
Here will be described exemplary embodiment in detail, its sample table shows in the accompanying drawings.When description below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawing represents same or analogous key element.Execution mode described in following exemplary embodiment does not represent all execution modes consistent with the disclosure.On the contrary, they only with as in appended claims describe in detail, the example of apparatus and method that aspects more of the present disclosure are consistent.
For mechanical type potentiometer, the common process in correlation technique has two aspects can affect axiality between motor shaft and potentiometer installing hole:
1, controlling motor is screwed on support, and potentiometer is welded on pcb board by SMT (SurfaceMountTechnology, surface mounting technology) technique, and pcb board is screwed on support.The cooperation in motor shaft and potentiometer hole, have passed through 3 tolerance stack of " SMT paster ", " motor and support assembling ", " pcb board and support assembling ", the error of tolerance stack may be far longer than the requirement error of potentiometer and motor coaxle degree.
2, after the installing hole of motor shaft and potentiometer coaxially assembles, when the pcb board being provided with potentiometer being fixed on support by lock screw, due to the electric screwdriver High Rotation Speed of production line, surface making it contact to compress PCB and the rotary torsion that produces can be delivered to pcb board, cause producing slight shift between pcb board and housing, and and then the axiality had influence between potentiometer and motor shaft.
In the related, in order to solve the problems of the technologies described above, the settling mode of employing comprises:
Mode one, first with screw, control motor and support to be locked, again the pcb board being welded with potentiometer is set on motor shaft, and with screw locking pcb board and support (or clamp pcb board with two housings up and down of support be fixed), then by the smooth degree that testing of electric motors axle rotates, thus judge whether motor shaft and potentiometer installing hole meet axiality requirement.If the resistance that motor shaft rotates whole circle is all little and smooth and easy, just think that axiality meets the demands, otherwise need to disassemble screw and after adjusting the attitude of potentiometer, again lock the smooth rotation degree of screw and testing of electric motors axle; Circulation like this, until motor shaft and potentiometer installing hole meet axiality requirement.
But aforesaid way obviously exists and undue rely on workman and assemble quality, and test result also exists very large artificial subjective factor, result in that the production time is uncertain, production efficiency low, product quality is difficult to the various problems such as guarantee.
In mode two, some cradle head structures, adopt magnetic coder to replace mechanical type potentiometer, avoid axiality requirement.
But the cost of magnetic coder is far away higher than mechanical type potentiometer on the one hand; On the other hand, because magnetic coder has magnetic, make it must away from miscellaneous parts such as compasses, thus high requirement is existed to installation site, thus the product structure of design specialized may be needed, and portioned product that is little for volume, insufficient space, even possibly cannot apply magnetic coder (because place in any case, all may cause magnetic disturbance).
Therefore, the disclosure passes through the improvement to cradle head structure, to solve the above-mentioned technical problem in correlation technique.
Figure 1A is the perspective view of the cradle head control motor in correlation technique, and as shown in Figure 1A, the shell structure of the cradle head control motor 1 in correlation technique comprises:
Motor casing 11, the end face of this motor casing 11 is provided with an opening 111, and the motor shaft 12 for this control motor 1 stretches out by this motor casing 11.From Figure 1A, the end face of motor shaft 12 is D shape, the second installing hole 31 (see Fig. 3) on potentiometer 3 (see Fig. 2) in corresponding The Cloud Terrace is D shape too, and thus axiality between the two requires very high, for production process brings difficulty and challenge greatly.
On the basis of the shell structure of the motor of cradle head control shown in Figure 1A 1, as shown in Figure 1B, the shell structure of cradle head control motor 1 of the present disclosure, comprises further:
Spacing preiection 13, this spacing preiection 13 is coaxially arranged on the end face of motor casing 11 in this motor shaft 12 ground, and the outer wall of the inwall of this spacing preiection 13 and this motor shaft 12 surrounds spacing ring 130, spacing with what realize potentiometer in The Cloud Terrace 3 (see Fig. 2).Wherein, this spacing preiection 13 can be integral type structure with motor casing 11, but the disclosure does not limit this.
For the ease of understanding the impact of above-mentioned spacing preiection 13 for the installation axiality between motor shaft 12 and potentiometer 3, the decomposing schematic representation below in conjunction with the cradle head structure shown in Fig. 2 is described.As shown in Figure 2, cradle head structure can comprise: cradle head control motor 1 as shown in Figure 1B, support 2 (illustrate only the latter half housing of " support " in Fig. 2), and is installed on the potentiometer 3 on printed circuit board (PCB) 4; Wherein, installation is fixed by screw 5 etc. between all parts.
As an exemplary embodiment, as shown in Figure 2, potentiometer 3 can be positioned at the top of printed circuit board (PCB) 4, and the printed circuit board (PCB) 4 being provided with potentiometer 3 is arranged at support 2 inside; Wherein, the downside end face of support 2 is provided with first installing hole 21 that can penetrate for this motor shaft 12 and this spacing preiection 13, potentiometer 3 is provided with second installing hole 31 that can pass for this motor shaft 12, and printed circuit board (PCB) 4 is provided with the pilot hole 41 that can penetrate for this motor shaft 12 and this spacing preiection 13.
Simultaneously, after the potentiometer 3 shown in Fig. 2 is overturn, as shown in Figure 3, the known end face bottom end face of potentiometer 3 (namely in Fig. 2) periphery near above-mentioned first installing hole 21 on the second installing hole 31 of potentiometer 3 is also provided with coaxially in the spacing plug 32 of this second installing hole 31.
So, as long as can guarantee that the spacing ring 130 that this spacing plug 32 and cradle head control motor 1 are formed cooperatively interacts, then when controlling motor 1, support 2, potentiometer 3 and printed circuit board (PCB) 4 and mutually assembling, as shown in Figure 4, in the cradle head structure obtained, the spacing plug 32 of potentiometer 3 bottom by inserting the spacing ring 130 controlling motor 1 top, can realize coordinating between potentiometer 3 with motor shaft 12.
In the above-described embodiments, on the one hand, coaxially arrange between spacing preiection 13 and motor shaft 12, the spacing ring 130 thus formed between the inwall of spacing preiection 13 and the outer wall of motor shaft 12 is inevitable coaxial with this motor shaft 12; On the other hand, spacing plug 32 is coaxially arranged with the second installing hole 31 on potentiometer 3.
Therefore, owing to cooperatively interacting between spacing plug 32 and spacing ring 130, the specification of such as this spacing plug 32 can insert this spacing ring 130 just and the position realized between the two is fixed, so based on the coaxial relation between above-mentioned spacing ring 130 and motor shaft 12, coaxial relation between spacing plug 32 and the second installing hole 31, between known motor shaft 12 and the second installing hole 31, coaxial relation must be guaranteed.
Simultaneously, due to the fit system between spacing plug 32 and spacing ring 130, it is the cooperation of physically based deformation structure, as long as all parts meets said structure in process of production, requirement in specification, just must guarantee to meet the axiality demand between motor shaft 12 and potentiometer 3 (being actually the second installing hole 31 of this potentiometer 3), and with the technique in assembling process, qualification, subjective judgement, the factors such as build-up tolerance relieve association, and the screw terminal that can not be subject to High Rotation Speed causes the impact of torsion on printed circuit board (PCB) 4, thus without the need to carrying out repeated measurement to axiality, repeated disassembled and assembled is carried out to cradle head structure, axiality is made to require to become the controllable factor of producer, greatly improve the production efficiency of cradle head structure.
In fact, shown by the test in actual production process: based on the technical scheme of the repetitive measurement in correlation technique mentioned above, repeated disassembled and assembled, axiality qualification rate after each assembling is only less than 50%, thus the product of every batch all needs after the dismounting of more than at least 3 times, just likely reaches about 90%; And based on technical scheme of the present disclosure, the axiality qualification rate after Product Assembly almost reaches 100%, be obviously better than the technical scheme in correlation technique.
Further, except the cradle head structure shown in Fig. 2, can also there is relevant structural change in technical scheme of the present disclosure, be described in detail respectively below.
1, rigging position
In the embodiment shown in Figure 2, because potentiometer 3 is installed on the side (namely potentiometer 3 be installed on the top of printed circuit board (PCB) 4) of this printed circuit board (PCB) 4 away from this first installing hole 21, and motor shaft 12 assembles from bottom to top, thus motor shaft 12 is from bottom to top successively through after support 2, printed circuit board (PCB) 4 and potentiometer 3, realize coordinating between this motor shaft 12 with potentiometer 3, and printed circuit board (PCB) 4 needs to offer the pilot hole 41 being matched with this spacing ring 130 (can penetrate for this motor shaft 12 and this spacing preiection 13) corresponding to the second installing hole 31 place.
For example, as shown in Figure 5, can by the architecture advances to potentiometer 3, it is made to be mounted on the bottom of printed circuit board (PCB) 4, and the bottom of this potentiometer 3 is provided with the second installing hole 31 as shown in Figure 3 and spacing plug 32 equally, motor shaft 21 successively through after spacing plug 32, second installing hole 31 on support 2 and potentiometer 3, can be realized coordinating between this motor shaft 21 with potentiometer 3, and this printed circuit board (PCB) 4 can not arrange the through hole 41 shown in Fig. 2.
Certainly, even if potentiometer 3 to be mounted on the bottom of printed circuit board (PCB) 4, the through hole 41 coaxial with the second installing hole 31 can be offered equally on printed circuit board (PCB) 4, after passing through that motor shaft 21 is passed this printed circuit board (PCB) 4, realize better assembling intensity.
2, the structure of spacing preiection 13
As an exemplary embodiment, spacing preiection 13 can for being located at the annular gusset at opening 111 place of motor casing 11, and than as shown in Figure 1B, this spacing preiection 13 can be annular gusset.
As another exemplary embodiment, spacing preiection 13 can comprise multiple position-limiting units of non-linear configuration, and there is gap between adjacent position-limiting unit.Wherein, multiple position-limiting unit can be centrosymmetric around the axle center of this motor shaft 12 setting.As shown in Figure 6, this spacing preiection 13 for being located at least two arc section 13A and 13B at opening 111 place of motor casing 11, by the inwall of this arc section 13A and 13B and the outer wall of motor shaft 12, still can surround required spacing ring 130 to ratio.
3, the varying aperture of screw hole
As shown in Fig. 2, Fig. 4 and Fig. 5, printed circuit board (PCB) 4 needs to be assembled in support 2 by screw 5, but when potentiometer 3 is mounted to this printed circuit board (PCB) 4, certain displacement error may be there is, thus there is following problems: if still assembled according to the screw hole 42 originally on printed circuit board (PCB) 4, obviously the axle center of potentiometer 3 excursion motor axle 12 will be caused; And if according to the axiality demand of potentiometer 3 carry out according to, by not corresponding with the screw hole 22 on support 2 for the screw hole 42 caused on printed circuit board (PCB) 4, make screw 5 in screwing operations, cause interference to screw hole 42 edge on printed circuit board (PCB) 4, form the destruction to printed circuit board (PCB) 4, the position having influence on potentiometer 3 is set.
Therefore, in embodiment of the present disclosure, can also by being configured the aperture of the screw hole 42 on printed circuit board (PCB) 4, to solve above-mentioned technical problem.For example, when printed circuit board (PCB) 4 comprises carry out with support 2 the some screw holes 42 assembled time, the aperture R of each screw hole 42 can meet:
R1+a×2≤R＜R2
Wherein, R1 is the diameter in the bar portion of the screw 5 of screw hole 42 correspondence, and a is the maximum displacement error amount of potentiometer 3 when being mounted to printed circuit board (PCB) 4, and R2 is the diameter of the head (i.e. cap nut) of the screw 5 of screw hole 42 correspondence.
In this embodiment, the aperture R of screw hole 42 can in reciprocal both direction, all can hold the displacement error of potentiometer 3 when being mounted to printed circuit board (PCB) 4, thus the contradiction solved between potentiometer 3 axiality and normal screwing screw 5, avoid having an impact to the axiality of potentiometer 3.
Those skilled in the art, at consideration specification and after putting into practice disclosed herein disclosing, will easily expect other embodiment of the present disclosure.The application is intended to contain any modification of the present disclosure, purposes or adaptations, and these modification, purposes or adaptations are followed general principle of the present disclosure and comprised the undocumented common practise in the art of the disclosure or conventional techniques means.Specification and embodiment are only regarded as exemplary, and true scope of the present disclosure and spirit are pointed out by claim below.
Should be understood that, the disclosure is not limited to precision architecture described above and illustrated in the accompanying drawings, and can carry out various amendment and change not departing from its scope.The scope of the present disclosure is only limited by appended claim.
Claims (11)
1. a shell structure for cradle head control motor, is characterized in that, comprising:
Motor casing, the end face of described motor casing is provided with an opening, and the motor shaft for described control motor stretches out by described motor casing;
Spacing preiection, described spacing preiection is coaxially arranged on the described end face of motor casing in described motor shaft, and the outer wall of the inwall of described spacing preiection and described motor shaft surrounds spacing ring, spacing with what realize potentiometer in The Cloud Terrace.
2. shell structure according to claim 1, is characterized in that, described spacing preiection is the annular gusset being located at described opening part.
3. shell structure according to claim 2, is characterized in that, described spacing preiection is the annular gusset being located at described opening part.
4. shell structure according to claim 1, is characterized in that, described spacing preiection comprises multiple position-limiting units of non-linear configuration, and there is gap between adjacent position-limiting unit.
5. shell structure according to claim 4, is characterized in that, described spacing preiection is at least two arc sections being located at described opening part.
6. shell structure according to claim 4, is characterized in that, multiple position-limiting unit is centrosymmetric around the axle center of described motor shaft setting.
7. shell structure according to claim 1, is characterized in that, described motor casing and described spacing preiection are formed in one structure.
8. a cradle head control motor, is characterized in that, comprising: the shell structure of the cradle head control motor according to any one of claim 1-7.
9. a cradle head structure, is characterized in that, comprising:
Support, be installed on potentiometer on printed circuit board (PCB) and cradle head control motor, described cradle head control motor is configured with the shell structure of the cradle head control motor according to any one of claim 1-7;
Wherein, a side end face of described support is provided with first installing hole that can penetrate for described motor shaft and described spacing preiection; Described potentiometer is located in described support, and described potentiometer is provided with second installing hole that can pass for described motor shaft, described second installing hole is also provided with near the end face periphery of described first installing hole coaxially in described second installing hole, the spacing plug that matches with described spacing ring.
10. cradle head structure according to claim 9, it is characterized in that, described potentiometer is installed on the side of described printed circuit board (PCB) away from described first installing hole, and described printed circuit board (PCB) is positioned at described second installing hole place and offers the pilot hole being matched with described spacing ring.
11. cradle head structures according to claim 9, is characterized in that, described printed circuit board (PCB) comprise the some screw holes carrying out with described support assembling, and the aperture R of each screw hole meets:
R1+a×2≤R＜R2
Wherein, R1 is the diameter in the lead screw portion that described screw hole is corresponding, and a is the maximum displacement error amount of described potentiometer when being mounted to described printed circuit board (PCB), and R2 is the diameter of the screw head that described screw hole is corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510771893.4A CN105305693B (en) | 2015-11-12 | 2015-11-12 | Shell structure, cradle head control motor and the cradle head structure of cradle head control motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510771893.4A CN105305693B (en) | 2015-11-12 | 2015-11-12 | Shell structure, cradle head control motor and the cradle head structure of cradle head control motor |
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| Publication Number | Publication Date |
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| CN105305693A true CN105305693A (en) | 2016-02-03 |
| CN105305693B CN105305693B (en) | 2018-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510771893.4A Active CN105305693B (en) | 2015-11-12 | 2015-11-12 | Shell structure, cradle head control motor and the cradle head structure of cradle head control motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109787428A (en) * | 2019-03-08 | 2019-05-21 | 深圳市雷赛智能控制股份有限公司 | Integrated electric motor and automatic control system |
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| CN204713206U (en) * | 2015-04-17 | 2015-10-21 | 张�林 | The reset attachment of steering wheel of baby carrier |
| CN205248946U (en) * | 2015-11-12 | 2016-05-18 | 小米科技有限责任公司 | Shell structure , cloud platform control motor and tripod head structure of cloud platform control motor |
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| CN2423986Y (en) * | 2000-05-18 | 2001-03-21 | 铨宝工业股份有限公司 | Jacket assembly of electric drill chuck |
| JP2002354930A (en) * | 2002-05-29 | 2002-12-10 | Seirei Ind Co Ltd | Apparatus for detecting gyrating position of grain discharging auger of combine |
| CN204110366U (en) * | 2014-07-04 | 2015-01-21 | 杨建军 | A kind of actuating device of pick up camera The Cloud Terrace and pick up camera The Cloud Terrace |
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| CN109787428A (en) * | 2019-03-08 | 2019-05-21 | 深圳市雷赛智能控制股份有限公司 | Integrated electric motor and automatic control system |
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| CN105305693B (en) | 2018-10-30 |
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Effective date of registration: 20160316 Address after: 100085 Beijing city Haidian District Qinghe Street No. 68 Huarun colorful city shopping center two floor 13 Applicant after: Xiaomi Technology Co., Ltd. Applicant after: BEIJING FEIMI TECHNOLOGY CO., LTD. Address before: 100085 Beijing city Haidian District Qinghe Street No. 68 Huarun colorful city shopping center two floor 13 Applicant before: Xiaomi Technology Co., Ltd. |
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