CN208397602U - A kind of camera and holder driving mechanism - Google Patents

Abstract

The utility model discloses a kind of holder driving mechanism, it includes mounting base and worm gear mechanism, worm gear mechanism includes the worm screw being rotatably mounted in mounting base, the both ends of worm screw include thread segment, two thread segments are each passed through corresponding mounting hole in mounting base, and cooperated by nut and mounting base axially position, the first threaded hole radially extended is offered on nut and along its second axially extending threaded hole, first threaded hole penetrates through the first locking member and the second locking member that direction is successively laid at it, second locking member is threadedly engaged with the first threaded hole, and compress the first locking member, first locking member is located in the bottom of the first threaded hole, and there is positioning surface, the inner wall of positioning surface and the second threaded hole constitutes the flank with thread segment secure fit, the hardness of first locking member is less than the hardness of thread segment.A kind of camera is also disclosed in the utility model.There is axial float in the worm screw that above scheme can solve worm gear mechanism in current camera.

Description

A kind of camera and holder driving mechanism

Technical field

The utility model relates to camera technique field more particularly to a kind of camera and holder driving mechanisms.

Background technique

In order to facilitate shooting, current camera is typically mounted on holder.Holder is generally configured with light-weight, small volume, It is in need simultaneously to have compared with large speed ratio, therefore current holder generallys use worm gear mechanism and realizes transmission.Worm gear mechanism The stability of assembly can determine the precision of camera rotation.

But in actual assembling process, the worm screw of worm gear mechanism is unable to get preferable fastening, can there is axis To play phenomenon.It is larger that this will lead to transmission deviation, and then influences the normal photographing of camera.

Utility model content

The utility model discloses a kind of holder driving mechanism, exists to solve the worm screw of worm gear mechanism in current camera The problem of axial float.

To solve the above-mentioned problems, the utility model adopts the following technical solutions:

A kind of holder driving mechanism, including mounting base and worm gear mechanism, the worm gear mechanism include rotationally The worm screw being mounted in the mounting base, the both ends of the worm screw include thread segment, and two thread segments are each passed through institute It states corresponding mounting hole in mounting base and is cooperated by nut and the mounting base axially position, opened up on the nut There is the first threaded hole radially extended and along its second axially extending threaded hole, first threaded hole is in its perforation side To the first locking member and the second locking member successively laid, second locking member and first threaded hole be threadedly engaged and First locking member is compressed, first locking member is located in the bottom of first threaded hole and has positioning surface, described The inner wall of positioning surface and second threaded hole constitutes the flank with the thread segment secure fit, first locking member Hardness is less than the hardness of the thread segment.

Preferably, in above-mentioned holder driving mechanism, the position opposite with the mounting hole covers on the both ends of the worm screw It is located at the position on the outside of the radial bearing equipped with radial bearing, on the worm screw and is arranged with thrust bearing, the thrust axis The end face held is bonded with the surface positioning where the exterior side port of the mounting hole.

Preferably, in above-mentioned holder driving mechanism, motor is fixed in the mounting base, the motor and the worm screw pass Dynamic cooperation.

Preferably, in above-mentioned holder driving mechanism, one end of the worm screw is successively arranged with the radial bearing, described pushes away Power bearing, synchronizing wheel and the nut, the synchronizing wheel, which is connected by key, to be fixed on the worm screw, and the synchronizing wheel passes through biography Dynamic band cooperates with the motor drive.

Preferably, in above-mentioned holder driving mechanism, the worm screw includes the shaft shoulder, towards the thrust axis in the synchronizing wheel The end face held and the shaft shoulder location fit.

Preferably, in above-mentioned holder driving mechanism, block plate, the block plate are provided between the synchronizing wheel and the shaft shoulder Edge outside stretch out the edge of the synchronizing wheel.

Preferably, in above-mentioned holder driving mechanism, the mounting base includes support plate and be fixedly linked with the support plate, And the fixed plate in the support plate is stood on, the motor support is fixedly linked in the support plate, and with the fixed plate, Avoid holes are offered in the fixed plate, the power output end of the motor passes through the avoid holes.

Preferably, in above-mentioned holder driving mechanism, worm screw mounting rack, the worm screw mounting rack are provided in the support plate Including top plate and two side plates, the top plate is supported in the support plate by two side plates, and the side plate offers The mounting hole, the position that helical tooth is arranged on the worm screw are located at the space that the top plate and two side plates are surrounded It is interior.

Preferably, in above-mentioned holder driving mechanism, the both sides of the face of the thrust bearing are sticked and have bearing washer, are located at The bearing washer is steel gasket and thickness between surface where the exterior side port of the thrust bearing and the mounting hole Greater than 2.5mm.

Preferably, in above-mentioned holder driving mechanism, the radial bearing and the thrust bearing are installed on the worm screw Cylindrical surface includes two opposite planes.

Preferably, in above-mentioned holder driving mechanism, the diameter of the mounting hole is greater than maximum diameter region on the worm screw Diameter.

Preferably, in above-mentioned holder driving mechanism, first threaded hole be it is multiple, multiple first threaded holes are in institute The circumferential direction for stating nut is uniformly distributed, is provided with first locking member and second locking member in each first threaded hole.

A kind of camera, including holder driving mechanism described above.

The technical solution adopted in the utility model can reach it is following the utility model has the advantages that

In holder driving mechanism disclosed by the utility model, worm screw realizes that its axial direction in mounting base is fixed by nut Position, nut offers the first threaded hole radially extended and along its second axially extending threaded hole, in the first threaded hole Perforation direction on, the first locking member is located in the bottom of the first threaded hole by the second locking member, and what the first locking member had determines The inner wall of plane, positioning surface and the second threaded hole constitutes the flank with thread segment secure fit, and the second locking member screws in first The first locking member can be compressed in threaded hole, so that the first locking member can be preferably pressed on thread segment, reach locking Purpose.Since the hardness of the first locking member is less than the hardness of thread segment, the first locking member is compacted and nut check exists Thread segment will not be weighed wounded when on thread segment, and then be avoided that the fastening effect as caused by the damage of thread segment is poor and ask Topic.

Detailed description of the invention

Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model Point, the exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the utility model Improper restriction.In the accompanying drawings:

Fig. 1 is the structural schematic diagram of holder driving mechanism disclosed in the utility model embodiment；

Fig. 2 is the perspective view of the explosion of part-structure in Fig. 1；

Fig. 3 is the assembling schematic diagram of nut and the first locking member and the second locking member in the utility model embodiment, in Fig. 3 Arrow direction be nut radial direction；

Fig. 4 is the structural schematic diagram of worm screw disclosed in the utility model embodiment；

Fig. 5 is the end cross-sectional schematic diagram of worm screw shown in Fig. 4.

Description of symbols:

100- mounting base, 110- support plate, 120- fixed plate, 121- avoid holes, 130- worm screw mounting rack, 131- top plate, 132- side plate, 140- mounting hole, 200- worm screw, 210- synchronizing wheel, 220- transmission belt, 230- radial bearing, 240- thrust bearing, 250- plane, 260- thread segment, the 270- shaft shoulder, 280- helical tooth, 290- block plate, 300- nut, the first threaded hole of 310-, 320- Second threaded hole, the first locking member of 400-, 410- positioning surface, the second locking member of 500-, 600- motor.

Specific embodiment

It is specific below in conjunction with the utility model to keep the purpose of this utility model, technical solution and advantage clearer Technical solutions of the utility model are clearly and completely described in embodiment and corresponding attached drawing.Obviously, described embodiment It is only the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, this field Those of ordinary skill's every other embodiment obtained without making creative work, belongs to the utility model The range of protection.

Below in conjunction with attached drawing, technical solution disclosed in each embodiment of the utility model is described in detail.

Fig. 1-Fig. 5 is please referred to, the utility model embodiment discloses a kind of holder driving mechanism, disclosed holder driving machine Structure includes mounting base 100 and worm gear mechanism.

Worm gear mechanism is mounted in mounting base 100, and worm gear mechanism includes worm screw 200, and worm screw 200 is rotationally pacified In mounting base 100.Certainly, the worm gear of worm gear mechanism can be engaged with the helical tooth 280 on worm screw 200, Jin Erneng Enough cloud platform rotations of driving worm gear drive camera.

The both ends of worm screw 200 include thread segment 260, and two thread segments 260 are each passed through corresponding in mounting base 100 Mounting hole 140 and by being threadedly engaged on the port for being positioned at mounting hole 140 with nut 300, and then realize that worm screw 200 exists Axially position in mounting base 100, the axial direction refer to the axis direction of worm screw 200.

The first threaded hole 310 radially extended is offered on nut 300 and along its second axially extending threaded hole 320, direction, which is penetrated through, at it in the first threaded hole 310 is successively laid with the first locking member 400 and the second locking member 500, the second lock Tight part 500 is threadedly engaged with the first threaded hole 310, and compresses the first locking member 400.First locking member 400 is located in the first spiral shell The bottom of pit 310 and there is positioning surface 410, the inner wall composition flank of positioning surface 410 and the second threaded hole 320, flank With 260 secure fit of thread segment.The hardness of first locking member 400 is less than the hardness of thread segment 260.

In holder driving mechanism disclosed in the utility model embodiment, worm screw 200 realizes it in mounting base by nut 300 Axially position on 100, nut 300 offer the first threaded hole 310 radially extended and along its axially extending second Threaded hole 320, in the perforation direction of the first threaded hole 310, the first locking member 400 is located in the first spiral shell by the second locking member 500 The inner wall of the bottom of pit 310, the positioning surface 410 that the first locking member 400 has, positioning surface 410 and the second threaded hole 320 is constituted With the flank of 260 secure fit of thread segment, the second locking member 500, which screws in the first threaded hole 310, can compress the first locking member 400, so that the first locking member 400 can be preferably pressed on thread segment 260, achieve the purpose that locking.Due to the first lock The hardness of tight part 400 is less than the hardness of thread segment 260, therefore the first locking member 400 is compacted and nut 300 is locked at screw thread Thread segment 260 will not be weighed wounded when in section 260, and then be avoided that the fastening effect as caused by the damage of thread segment 260 is poor The problem of.

Worm screw 200 usually realizes the rotational installation in mounting base 100 by bearing.In preferred scheme, worm screw 200 The position opposite with mounting hole 140 can be arranged with radial bearing 230 on both ends, and radial bearing 230 can preferably be born Radial load.The position for being located at 230 outside of radial bearing on worm screw 200 can be arranged with thrust bearing 240, thrust bearing 240 end face is bonded with the surface positioning where the exterior side port of mounting hole 140.Thrust bearing 240 can preferably bear axis To load.Thrust bearing 240 is set on worm screw 200 on the outside left of radial bearing 230, can preferably be promoted whole The compactness of a mechanism, and then 100 upper port end face of mounting base can be made full use of to realize axially position.

Motor 600 can be installed, motor 600 and the transmission of worm screw 200 cooperate, and then as worm gear snail in mounting base 100 The power source of linkage.Motor 600 realizes the operating of entire worm gear mechanism by the transmission cooperation with worm screw 200, finally Cloud platform rotation can be driven, achievees the purpose that adjust camera shooting angle.

Synchronizing wheel 210 can be set on worm screw 200, synchronizing wheel 210 is cooperated by transmission belt 220 and the transmission of motor 600. Certainly, motor 600 can also realize that the transmission between worm screw 200 cooperates by other transmission mechanisms, such as chain drive structure, Gear mechanism, the utility model embodiment not specific transmission fit system between limiting motor 600 and worm screw 200.

In a kind of specific embodiment, one end of worm screw 200 be successively arranged with radial bearing 230, thrust bearing 240, Synchronizing wheel 210 and nut 300, synchronizing wheel 210, which can be connected by key, to be fixed on worm screw 200.Synchronizing wheel 210 passes through transmission belt 220 cooperate with the transmission of motor 600.Above-mentioned assembling structure enables to thrust bearing 240 to be located at synchronizing wheel 210 and corresponding peace Between surface where the exterior side port in dress hole 140, reach preferably assembly effect.

Axle sleeve can be fixed on worm screw 200 to realize the axially position of component mounted thereto, certainly, worm screw 200 On location structure can be set.In a kind of specific embodiment, worm screw 200 includes the shaft shoulder 270, direction in synchronizing wheel 210 The end face of thrust bearing 240 and 270 location fit of the shaft shoulder.Radial bearing 230, thrust bearing 240 generally use interference fit Mode is fixed on worm screw 200, and then realizes the axially position on worm screw 200.Certainly, phase also can be set on worm screw 200 The corresponding shaft shoulder assists realizing the axially position of radial bearing 230, thrust bearing 240 using the shaft shoulder.

In preferred scheme, block plate 290 can be set between synchronizing wheel 210 and the shaft shoulder 270, outside the edge of block plate 290 Stretch out the edge of synchronizing wheel 210, that is to say, that block plate 290 is greater than synchronizing wheel 210 in the radial full-size of worm screw 200 Diameter.In such cases, block plate 290 can play the role of positioning transmission band 220, and transmission belt 220 is avoided to be detached from synchronizing wheel 210, it can finally improve the stability of the operating of transmission belt 220.Block plate 290 can be made of the higher material of intensity, a kind of tool In the embodiment of body, block plate 290 can be stainless steel block plate.

Referring again to Fig. 2, in the utility model embodiment, mounting base 100 may include support plate 110 and and support plate 110 are fixedly linked and stand on the fixed plate 120 in support plate 110 (i.e. support plate 110 and fixed plate 120 is perpendicular), motor 600 are supported in support plate 110, and are fixedly linked with fixed plate 120, and avoid holes 121 can be offered in fixed plate 120, described The power output end of motor 600 passes through avoid holes 121.The mounting base 100 of above structure can preferably realize motor 600 and snail The installation of bar 200 is easier to so that above-mentioned be assembled to form module, and then is more convenient to carry out group between the other parts of camera Dress.

Worm screw mounting rack 130 can be set in support plate 110, worm screw mounting rack 130 includes top plate 131 and two side plates 132, top plate 131 is supported in support plate 110 by two side plates 132, and side plate 132 offers mounting hole described above, worm screw The position that helical tooth 280 is arranged on 200 is located in the space that top plate 131 and two side plates 132 are surrounded.

In order to be more convenient the installation of thrust bearing 240, radial bearing 230, transmission belt 220 on worm screw 200, preferred side In case, installed thrust bearing 240 and 230 cylindrical surface of radial bearing include two opposite planes 250 on worm screw 200.

In order to improve axial load ability to bear and reduce deformation shadow of the axial thrust to thrust bearing 240 of worm screw 200 It rings, in preferred scheme, the both sides of the face of thrust bearing 240, which can be sticked, bearing washer.It is preferably located at thrust bearing Bearing washer between 240 and the surface where the exterior side port of corresponding mounting hole 140 can be steel gasket.Steel pad Circle has biggish intensity, preferably can carry axial load by augmented thrust bearing 240.In a kind of specific embodiment, The thickness of steel gasket can be greater than 2.5mm.

In order to improve fastening effect, in preferred scheme, multiple threaded holes, multiple spiral shells can be set on each nut 300 Pit is uniformly distributed in the circumferential direction of nut 300, is provided with the first locking member 400 and the second locking member 500 in each threaded hole, and first The fit system of locking member 400 and the second locking member 500 is as described above, can preferably realize locking positioning, while can be compared with The axially position of worm screw 200 well.

In general, the position diameter that helical tooth 280 is arranged on worm screw 200 is maximum, and then can have relatively large load and hold Load ability.In order to facilitate assembling, in preferred scheme, the diameter of mounting hole 140 can be greater than the maximum diameter region of worm screw 200 Diameter.In such cases, assembler can be formed directly into from the side of the mounting hole 140 of mounting base 100, and then be easier to Realize the assembling of worm screw 200.

Based on holder driving mechanism disclosed in the utility model embodiment, the utility model embodiment discloses a kind of camera, Disclosed camera includes holder driving mechanism described in foregoing embodiments.

Emphasis describes the difference between each embodiment in the utility model foregoing embodiments, between each embodiment As long as different optimization feature non-contradiction, can combine to form more preferably embodiment, it is contemplated that style of writing is succinct, this then no longer It repeats.

The above description is only the embodiments of the present invention, is not intended to limit the utility model.For this field For technical staff, various modifications and changes may be made to the present invention.All institutes within the spirit and principle of the utility model Any modification, equivalent substitution, improvement and etc. of work, should be included within the scope of the claims of the utility model.

Claims (13)

1. a kind of holder driving mechanism, which is characterized in that including mounting base (100) and worm gear mechanism, the worm and gear Mechanism includes the worm screw (200) being rotatably mounted on the mounting base (100), and the both ends of the worm screw (200) include spiral shell Line section (260), two thread segments (260) be each passed through on the mounting base (100) corresponding mounting hole (140) and Cooperated by nut (300) and the mounting base (100) in axially position, is offered radially on the nut (300) Extend the first threaded hole (310) and along its axially extending the second threaded hole (320), first threaded hole (310) is at it Perforation direction the first locking member (400) and the second locking member (500) successively laid, second locking member (500) with it is described First threaded hole (310) is threadedly engaged and compresses first locking member (400), and first locking member (400) is located in institute It states the bottom of the first threaded hole (310) and there are positioning surface (410), the positioning surface (410) and second threaded hole (320) inner wall constitutes the flank with the thread segment (260) secure fit, and the hardness of first locking member (400) is small Hardness in the thread segment (260).

2. holder driving mechanism according to claim 1, which is characterized in that on the both ends of the worm screw (200) with it is described The opposite position of mounting hole (140) is arranged with radial bearing (230), and the radial bearing is located on the worm screw (200) (230) position on the outside of is arranged with thrust bearing (240), the end face and the mounting hole (140) of the thrust bearing (240) Exterior side port where surface position fitting.

3. holder driving mechanism according to claim 2, which is characterized in that be fixed with motor on the mounting base (100) (600), the motor (600) and the worm screw (200) transmission cooperate.

4. holder driving mechanism according to claim 3, which is characterized in that one end of the worm screw (200) is successively arranged There are the radial bearing (230), the thrust bearing (240), synchronizing wheel (210) and the nut (300), the synchronizing wheel (210) it is connected by key and is fixed on the worm screw (200), the synchronizing wheel (210) passes through transmission belt (220) and the motor (600) transmission cooperation.

5. holder driving mechanism according to claim 4, which is characterized in that the worm screw (200) includes the shaft shoulder (270), Towards the end face of the thrust bearing (240) and the shaft shoulder (270) location fit on the synchronizing wheel (210).

6. holder driving mechanism according to claim 5, which is characterized in that the synchronizing wheel (210) and the shaft shoulder (270) it is provided between block plate (290), the edge of the synchronizing wheel (210) is stretched out outside the edge of the block plate (290).

7. holder driving mechanism according to claim 3, which is characterized in that the mounting base (100) includes support plate (110) it and is fixedly linked with the support plate (110) and stands on the fixed plate (120) on the support plate (110), it is described Motor (600) is supported in the support plate (110), and is fixedly linked with the fixed plate (120), on the fixed plate (120) It offers avoid holes (121), the power output end of the motor (600) passes through the avoid holes (121).

8. holder driving mechanism according to claim 7, which is characterized in that be provided with worm screw mounting rack in the support plate (130), the worm screw mounting rack (130) includes top plate (131) and two side plates (132), and the top plate (131) is described in two Side plate (132) is supported on the support plate (110), and the side plate (132) offers the mounting hole (140), the snail The sky that the position that helical tooth (280) are arranged on bar (200) is located at the top plate (131) and two side plates (132) are surrounded In.

9. holder driving mechanism according to claim 2, which is characterized in that the both sides of the face of the thrust bearing (240) Being sticked has bearing washer, be located at surface where the exterior side port of the thrust bearing (240) and the mounting hole (140) it Between the bearing washer be that steel gasket and thickness are greater than 2.5mm.

10. holder driving mechanism according to claim 2, which is characterized in that installed on the worm screw (200) described centripetal The cylindrical surface of bearing (230) and the thrust bearing (240) includes two opposite planes (250).

11. holder driving mechanism according to claim 1, which is characterized in that the diameter of the mounting hole (140) is greater than institute State the diameter of maximum diameter region on worm screw (200).

12. holder driving mechanism according to claim 1, which is characterized in that first threaded hole (310) be it is multiple, Multiple first threaded holes (310) are uniformly distributed in the circumferential direction of the nut (300), in each first threaded hole (310) It is provided with first locking member (400) and second locking member (500).

13. a kind of camera, which is characterized in that including holder driving mechanism of any of claims 1-12.