CN110383204B

CN110383204B - Knob structure, focusing knob, remote controller and cloud platform

Info

Publication number: CN110383204B
Application number: CN201780088037.6A
Authority: CN
Inventors: 赵天菲
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2017-12-29
Filing date: 2017-12-29
Publication date: 2020-11-27
Anticipated expiration: 2037-12-29
Also published as: CN110383204A; WO2019127366A1

Abstract

A knob structure (100, 100a) comprises an operation assembly (10), a rotating assembly (20, 20a) and a fixing assembly (30, 30a), wherein the operation assembly is connected with the rotating assembly, the fixing assembly bears the operation assembly and the rotating assembly, the operation assembly can drive the rotating assembly to rotate relative to the fixing assembly, a gap is formed between the rotating assembly and the fixing assembly, and the operation assembly is used for adjusting the size of the gap. This knob structure can completely cut off the runner assembly with fixed subassembly avoids the runner assembly with fixed subassembly direct contact on the friction surface avoids appearing the frictional force increase, and rotatory feel is puckery problem.

Description

Knob structure, focusing knob, remote controller and cloud platform

Technical Field

The invention relates to the technical field of electronic shooting, in particular to a knob structure, a focusing knob, a remote controller and a holder.

Background

The knob structure is a device for manual adjustment of a user, and is widely applied to occasions requiring manual control in multiple fields. The universal knob structure comprises a rotating component and a fixing component, a user manually adjusts the rotating component to rotate relative to the fixing component, and the external device is controlled by adjusting the relative rotation angle between the rotating component and the fixing component. The focusing knob is a knob for manually adjusting the focal length of a user, and is widely applied to the field of electronic shooting, but after the traditional focusing knob is used for a long time, a rotating assembly and a fixing assembly are easily in direct contact on a friction surface, so that the problems of increased friction force and unsmooth focusing hand feeling occur.

Disclosure of Invention

In view of the above, there is a need for an improved knob structure, focusing knob, remote controller and holder.

The invention provides a knob structure which comprises an operation assembly, a rotating assembly and a fixing assembly, wherein the operation assembly is connected with the rotating assembly, the fixing assembly bears the operation assembly and the rotating assembly, the operation assembly can drive the rotating assembly to rotate relative to the fixing assembly, a gap is formed between the rotating assembly and the fixing assembly, and the operation assembly is used for adjusting the size of the gap.

Further, the operating assembly comprises an adjusting member, the adjusting member and the rotating assembly are fixed, and the rotating assembly comprises a spring which acts on the adjusting member in the operating assembly.

Furthermore, the operating assembly further comprises a knob, the adjusting piece is connected with the knob and the rotating assembly, a protrusion is arranged on the knob, and the protrusion arranged on the knob is sleeved with the spring.

Further, the operation assembly further comprises an anti-skid wheel, the outer side of the anti-skid wheel is provided with anti-skid grains, the knob is sleeved with the anti-skid wheel, and the anti-skid wheel and the knob are fixed to each other.

Furthermore, the rotating assembly comprises a rotating shaft, one end of the rotating shaft extends into the protrusion formed on the knob, the other end of the rotating shaft is fixed at the fixed assembly, the rotating shaft and the protrusion are sleeved in the spring, and the adjusting piece and the rotating shaft are fixed.

Further, the runner assembly includes rotates the piece, the pivot passes rotate the piece and reciprocal anchorage, the knob cover is established the piece rotates, the knob with rotate the piece reciprocal anchorage, it establishes to rotate the piece cover fixed subassembly.

Furthermore, the rotating assembly comprises a friction piece, one end of the friction piece acts on the spring, the other end of the friction piece is embedded with the rotating piece, and the rotating shaft penetrates through the friction piece.

Furthermore, a friction plate is arranged in the rotating piece, one end of the friction plate acts on the spring, and the rotating shaft penetrates through the friction plate.

Further, fixed subassembly includes mounting and bearing, the bearing housing is established the pivot, the bearing is fixed in the mounting, the pivot passes the mounting, the mounting is connected the rotation piece, the rotation piece can be relative the mounting is rotatory.

Furthermore, the fixing part comprises a base plate and an extending part arranged on the base plate, the rotating part is sleeved on the extending part, and a groove is formed in the base plate.

Further, the fixed subassembly still includes the control panel, the control panel is connected in the mounting.

Further, the extension part is perpendicular to the base plate, an upper end surface of the extension part is a plane, and the rotating part is in mutual contact with the fixing part through the end surface.

Furthermore, the extension part is inclined to the base plate, the side surface of the extension part is an inclined surface, and the rotating part is in mutual contact with the fixing part through the side surface.

The invention also provides a focusing knob which adopts any knob structure, and the focusing knob also comprises a detection piece, wherein the detection piece is arranged in the knob structure, and the focusing knob is used for adjusting the focal length of external equipment.

Further, the detection piece is a potentiometer.

The invention also provides a remote controller, which comprises a remote controller body and a focusing knob arranged on the body, wherein the focusing knob is any one of the focusing knobs, and is used for adjusting the focal length of the remote controller.

The invention also provides a holder, which comprises a holder body, shooting equipment arranged on the holder body and a focusing knob arranged on the holder body, wherein the focusing knob is any one of the focusing knobs, and is used for adjusting the focal length of the shooting equipment.

The knob structure provided by the invention can isolate the rotating component from the fixed component, so that the rotating component is prevented from being in direct contact with the fixed component on a friction surface, and the problems of increased friction force and unsmooth rotating hand feeling are avoided.

Drawings

Fig. 1 is a perspective view of a focus control knob according to a first embodiment of the present invention.

FIG. 2 is an exploded view of the focus knob of FIG. 1 from another perspective.

FIG. 3 is an assembled perspective view of the focus knob of FIG. 1.

FIG. 4 is an assembled cross-sectional view of the focus knob of FIG. 1.

FIG. 5 is a perspective view of a rotating member and a friction member of the focus knob shown in FIG. 1.

Fig. 6 is a schematic structural view of a rotating member in the focus knob shown in fig. 1.

Fig. 7 is an exploded view of a focus control knob according to a second embodiment of the present invention.

FIG. 8 is an exploded view of the focus knob of FIG. 7 from another perspective.

FIG. 9 is an assembled cross-sectional view of the focus knob of FIG. 7.

Description of the main elements

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, fig. 1 is an exploded view of a knob structure 100 according to a first embodiment of the present invention, fig. 2 is an exploded view of the knob structure 100 shown in fig. 1 from another perspective, fig. 3 is an assembled perspective view of the knob structure 100 shown in fig. 1, and fig. 4 is an assembled cross-sectional view of the knob structure 100 shown in fig. 1. The knob structure 100 is used for manual control of a user, the user realizes control of an external device by adjusting a rotation angle of the knob structure 100, the knob structure 100 comprises an operation component 10, a rotation component 20 and a fixed component 30, the operation component 10 is a direct contact part when the user operates the knob structure 100 and is used for manual operation of the user, the rotation component 20 can rotate relative to the fixed component 30, the fixed component 30 is used for bearing the rotation component 20 and the operation component 10, the user rotates the operation component 10 and drives the rotation component 20 to rotate relative to the fixed component 30, the knob structure 100 can transmit the rotation angle of the rotation component 20 relative to the fixed component 30 to the external device (not shown), and accordingly control of the external device is realized.

The operating assembly 10 includes an anti-slip wheel 11 and a knob 12, the anti-slip wheel 11 is sleeved on the knob 12, the anti-slip wheel 11 is substantially in a hollow circular ring shape, the outer side of the anti-slip wheel is provided with anti-slip lines, the inner side of the anti-slip wheel is provided with internal teeth 111, and the anti-slip wheel 11 is used for being operated by a user and preventing the user from slipping during manual operation.

The knob 12 is a hollow structure, the outer teeth 121 are disposed on the outer side of the knob 12, the outer teeth 121 disposed on the knob 12 and the inner teeth 111 disposed on the anti-slip wheel 11 are matched with each other, so as to fix the anti-slip wheel 11 and the knob 12 to each other, the knob 12 is disposed with an accommodating cavity 122 along the axis direction thereof, the accommodating cavity 122 is disposed to accommodate the rotating assembly 20 and the fixing assembly 30, the knob 12 is further disposed with a plurality of through holes 123 along the radial direction, and the through holes 123 are matched with the threaded fasteners (not shown) to fix the rotating assembly 20.

The user rotates anti-skidding wheel 11, and anti-skidding wheel 11 drives knob 12 under the mutual cooperation of internal tooth 111 and external tooth 121 and rotates, and knob 12 is fixed with runner assembly 20 and drives runner assembly 20 and rotate to realize operating module 10 and drive the pivoted transmission process of runner assembly 20.

In this embodiment, the anti-slip wheel 11 and the knob 12 are connected by rack transmission. It is understood that in other embodiments, the anti-skid wheel 11 and the knob 12 may also be connected by other connection methods such as screwing, riveting, etc., as long as the anti-skid wheel 11 and the knob 12 can realize mutual transmission.

In this embodiment, the anti-slip wheel 11 and the knob 12 are two components, and at this time, the anti-slip wheel 11 can cover the through hole 123 formed in the knob 12, so as to prevent the through hole 123 from being directly exposed on the side surface of the knob structure 100, and thus the appearance of the knob structure 100 is more beautiful. It is understood that in other embodiments, the anti-skid wheel 11 and the knob 12 may be integrally formed, in which case the internal teeth 111 formed on the anti-skid wheel 11 and the external teeth 121 formed on the knob 12 may be omitted, and the through hole 123 formed on the knob 12 penetrates through the side surface of the anti-skid wheel 11.

The rotating component 20 is mounted on the fixing component 30 and is accommodated in the accommodating cavity 122 formed in the operating component 10, the rotating component 20 includes a rotating part 21 and a friction part 22, the rotating part 21 and the friction part 22 are connected with each other, the rotating part 21 is substantially hollow cylindrical, one end of the rotating part extends outwards along a direction perpendicular to the axis thereof and forms a protrusion 211, the protrusion 211 is mounted on the fixing component 30 and bears the operating component 10, a through hole 212 is further formed in the rotating part 21 at a position corresponding to the through hole 123, the through hole 212 formed in the rotating part 21 and the through hole 123 formed in the knob 12 are matched with a threaded fastener (not shown), so that mutual fixing between the rotating component 20 and the operating component 10 is realized.

In the present embodiment, the rotary member 21 and the knob 12 are connected by a fastener. It is understood that in other embodiments, other connecting means such as riveting, gluing, etc. may be used between the rotating member 21 and the knob 12.

Referring to fig. 5 to 6, fig. 5 is a schematic perspective view of the rotating member 21 in the knob structure 100 shown in fig. 1, and fig. 6 is a schematic structural view of the rotating member 21 in the knob structure 100 shown in fig. 1, a boss 213 is formed in a hollow cavity of the rotating member 21, and the boss 213 is used for being engaged with a groove 221 formed on the friction member 22, so as to fix the friction member 22 and the rotating member 21 to each other.

The groove 221 formed on the friction member 22 is embedded with the boss 213 mounted on the rotating member 21, the depth of the groove 221 is greater than the thickness of the boss 213, when the friction member 22 and the boss 213 are embedded and connected, a gap exists between the friction member 22 and the fixed component 30, the shape of the gap is consistent with the shape of the boss 213 and the groove 221, the gap can store damping grease which is mounted between the rotating component 20 and the fixed component 30 and used for providing a rotating damping force, the damping grease is stored in the gap which is defined by the friction member 22, the rotating member 21 and the fixed component 30, the damping grease is soaked on the friction surfaces of the rotating component 20 and the fixed component 30, the rotating component 20 and the fixed component 30 can be isolated, the rotating component 20 and the fixed component 30 are prevented from directly contacting on the friction surfaces, the friction force is prevented from increasing, and the problem of unsmooth rotating hand feeling is avoided.

In the present embodiment, the bosses 213 are substantially crossed in a cross shape, the center of the bosses is substantially circular, the friction element 22 is substantially disc-shaped, the grooves 221 formed in the friction element 22 are formed in a cross shape corresponding to the shape of the bosses 213, the center of the grooves 221 is also circular, and the bosses 213 and the grooves 221 are formed in a cross shape to increase the contact area therebetween and improve the stability of the rotation member 21 and the friction element 22 during transmission. It is understood that in other embodiments, the groove 221 and the boss 213 may be other status quo as long as the groove 221 and the boss 213 can be fitted to each other, and the depth of the groove 221 is greater than the thickness of the boss 213, so that a gap is left between the friction member 22 and the fixing member 30.

The rotating assembly 20 further includes a rotating shaft 23, a substantially middle portion of the rotating shaft 23 extends outward in a direction perpendicular to an axis thereof and forms a turntable 231, the turntable 231 is substantially "L" shaped when viewed perpendicularly to an axial direction thereof, the turntable 231 includes a transmission portion 2311 and a rotating portion 2312, the transmission portion 2311 is substantially "D" shaped when viewed in the axial direction thereof, and one side thereof forms a cut plane parallel to the axial direction. The transmission portion 2311 and the groove 2131 formed in the center of the boss 213 are mutually embedded, the shape of the groove 2131 is consistent with the cross section of the transmission portion 2311, and the rotating member 21 drives the rotating shaft 23 to rotate through the mutually embedded groove 2131 and the turntable 231 when rotating, so that transmission between the rotating member 21 and the rotating shaft 23 is realized. The rotating portion 2312 of the turntable 231 is substantially cylindrical, one side of the rotating portion 2312, which is away from the transmission portion 2311, extends outwards to form a flange 2313, the rotating portion 2312 and the bearing 31 in the fixing assembly 30 are matched with each other, the bearing 31 is sleeved on the rotating portion 2312, one end of the bearing 31 abuts against the flange 2313, the bearing 31 is fixed to the rotating shaft 23 through the rotating portion 2312 and the flange 2313, and the bearing 31 is used for realizing relative rotation between the rotating shaft 23 and the fixing assembly 30.

It is understood that in other embodiments, the recess 2131 formed on the boss 213 and the transmission portion 2311 on the turntable 231 may also be square, and other fixing forms such as screwing, gluing, and the like may also be adopted, as long as the boss 213 and the turntable 231 can be mutually transmitted and fixed.

The friction member 22 has a through hole 222 formed at the approximate center thereof, the through hole 222 is used for the rotation shaft 23 to pass through, the rotation shaft 23 passes through the rotation member 21 and the friction member 22 in sequence, one end of the rotation shaft abuts against the fixing member 30, and the other end is installed on the knob 12 in the operation member 10. The end surface of the knob 12 extends toward the inside of the knob 12 along the axial direction and forms a protrusion 124, the protrusion 124 is substantially annular and has a hollow cavity, and one end of the rotating shaft 23 is embedded into the hollow cavity of the protrusion 124. One end of the rotating shaft 23 close to the operating assembly 10 is provided with a screw hole along the axial direction thereof, and the screw hole is mutually screwed with the adjusting piece 13 assembled on the knob 12, thereby realizing the mutual fixation of the rotating shaft 23 and the knob 12. In the present embodiment, the adjuster 13 is an adjustment screw. It will be appreciated that other types of threaded fasteners may be used for the adjustment member 13.

In the present embodiment, the friction element 22 and the rotating element 21 are two components, and the friction element 22 is disposed in the boss 213 disposed on the rotating element 21. It will be appreciated that in other embodiments, the friction element 22 and the rotor 21 may also be formed as a single piece, with the friction element 22 and the boss 213 being integrally connected to one another.

The rotating assembly 20 further includes a spring 24, one end of the spring 24 is sleeved on the protrusion 124 provided on the knob 12, and the other end abuts against the friction member 22. The elastic force of the spring 24 acts on the friction member 22 and the knob 12, which not only increases the friction resistance between the friction member 22 and the rotating member 21 and improves the focusing hand feeling, but also prevents the focusing hand feeling from being deteriorated after the knob structure 100 is used for a long time through the pre-compression function of the spring. It will be appreciated that in other embodiments, the spring 24 may be replaced by other resilient members.

The adjusting element 13 is used to adjust the contact pressure of the friction element 22, so that the contact pressure of the friction element 22 can be increased when the adjusting element 13 is screwed in and the contact pressure of the friction element 22 can be reduced when the adjusting element 13 is unscrewed. The adjusting piece 13 and the spring 24 are matched with each other, so that the pressing force of the friction piece 22 can be effectively adjusted, and the focusing hand feeling is improved.

The fixed assembly 30 is used for carrying the operating assembly 10 and the rotating assembly 20, and in addition to the above-mentioned bearing 31, the fixed assembly 30 further includes a fixed member 32 and a cover plate 33, the bearing 31 is installed in the fixed member 32, one end of the fixed member 32 is received in the rotating member 21 and adjacent to the friction member 22, and the other end is connected to the cover plate 33.

The fixing member 32 is a hollow cylinder, damping grease is disposed between the fixing member 32 and the rotating member 21, the damping grease can provide resistance when the rotating member 21 rotates relative to the fixing member 32, the fixing member 32 includes a base plate 321 and an extension portion 322 disposed on the base plate 321, one end of the base plate 321 is connected to the cover plate 33, the other end of the base plate 321 bears the extension portion 322, the bearing 31 in the fixing assembly 30 is fixed in a hollow cavity of the extension portion 322, and the rotating member 21 is sleeved on the extension portion 322 of the fixing member 32. One or more grooves 3211 are formed in the base plate 321, and the grooves 3211 are used for accommodating excess damping grease overflowing between the fixed member 32 and the rotating member 21 due to extrusion, so as to prevent the damping grease from being scattered outside the knob structure 100. The groove 3211 and the protrusion 214 installed on the rotating member 21 are matched with each other, so that the rotation angle of the rotating member 21 relative to the fixing member 32 can be limited.

In this embodiment, the grooves 3211 are substantially circular arc-shaped, the number of the grooves 3211 is two, the two grooves 3211 are relatively uniformly spaced on the substrate 321, and the number of the protrusions 214 is one, and the protrusions are embedded in one of the grooves 3211. It is understood that in other embodiments, the grooves 3211 may have other shapes and numbers, and the number of the protrusions 214 may also be two or more, as long as the grooves 3211 and the protrusions 214 can limit the rotation, and the grooves 3211 can store damping grease.

The cover plate 33 is substantially disc-shaped, an opening 331 is formed on the cover plate 33, and the opening 331 and the positioning portion 323 arranged on the fixing member 32 are matched with each other to realize the positioning of the cover plate 33 and the fixing member 32 when being installed. The cover plate 33 is further provided with a plurality of screw holes 332, and the screw holes 332 are matched with the screw holes provided on the fixing member 32, so that the cover plate 33 and the screw holes 324 of the fixing member 32 can be fixed with each other under the assembly of a threaded fastener (not shown).

In the present embodiment, the number of the openings 331 is two, two openings 331 are oppositely formed at both ends of the cover plate 33, the number of the positioning portions 323 is also two, and one opening 331 corresponds to each positioning portion 323. It is to be understood that, in other embodiments, the number of the openings 331 and the positioning portions 323 may also be one or more than two as long as the number of the openings 331 and the positioning portions 323 is kept consistent.

In the present embodiment, the cover plate 33 and the fixing member 32 are fixed to each other in the screwing direction. It is understood that in other embodiments, the cover plate 33 and the fixing member 32 may be fixed to each other by riveting, gluing, or the like.

The assembly process of the knob structure 100 is described below: the rotating shaft 23 firstly passes through the bearing 31, so that the bearing 31 is positioned on the rotating table 231 of the rotating shaft 23, the rotating shaft 23 and the bearing 31 pass through the fixing member 32, so that the bearing 31 is fixed in the hollow cavity of the extension portion 322, one end of the rotating shaft 23 close to the bearing 31 is buckled in the cover plate 33, and then the cover plate 33 is screwed with the base plate 321 of the fixing member 32, thereby realizing the assembling process of the fixing component 30;

then the rotating shaft 23 sequentially passes through the rotating member 21, the friction member 22 and the spring 24, so that the friction member 22 and the rotating member 21 are mutually embedded, the protrusion 214 on the rotating member 21 is embedded into the groove 3211 on the fixing member 32, the tail end of the rotating shaft 23 abuts against a hollow cavity of the protrusion 124 on the knob 12, the spring 24 is sleeved outside the protrusion 124, at this time, the knob 12 and the rotating member 21 are mutually screwed and fixed, and the adjusting member 13 is screwed into the rotating shaft 23, so that the mutual fixing between the rotating assembly 20 and the fixing assembly 30 is realized;

finally, the anti-skid wheel 11 is sleeved outside the knob 12, so that the anti-skid wheel 11 and the knob 12 are flush in height and are all abutted against the protrusions 211 on the rotating member 21, thereby completing the mutual fixation between the operating assembly 10 and the rotating assembly 20.

The following describes the driving process of the knob structure 100: the user dials anti-skidding wheel 11 manually, anti-skidding wheel 11 drives knob 12 to rotate through the mutual cooperation of internal tooth 111 and external tooth 121, knob 12 and rotation piece 21 are mutually screwed, rotation piece 21 and friction piece 22 and pivot 23 gomphosis each other again, make knob 12 can drive rotation piece 21 and rotate, rotation piece 21 drives friction piece 22 and pivot 23 again and rotates, thereby it is rotatory to make operating module 10 drive rotating assembly 20 relatively fixed subassembly 30, knob structure 100 transmits the turned angle of rotating assembly 20 relatively fixed subassembly 30 to external device (not shown), thereby realize the control to external device.

The knob structure 100 can be directly connected to an external device through the rotating shaft 23 in a mechanical transmission manner, and the external device is directly controlled through the rotating shaft 23, and at this time, the rotating shaft 23 can penetrate through the cover plate 33 and be connected to the external device; the knob structure 100 can also sense the rotation angle of the rotating assembly 20 relative to the fixed assembly 30 through the detecting piece, the rotation angle of the rotating assembly 20 relative to the fixed assembly 30 is transmitted to an external device in the forms of electric signals, magnetic signals and the like through the detecting piece, thereby realizing the control of the external device, the detecting piece can be directly installed inside the knob structure 100 to be used as one part in the knob structure 100, the detecting piece can also be installed outside the knob structure 100, as long as the detecting piece can sense the rotation angle of the rotating assembly 20 relative to the fixed assembly 30 and transmit the rotation angle to the external device.

The adjustment process of the rotation resistance of the knob structure 100 is described as follows:

the knob structure 100 can effectively adjust the rotation resistance through the adjusting part 13 and the spring 24, when the rotation resistance needs to be increased, the adjusting part 13 is screwed in, so that the compression amount of the spring 24 is increased, the gap between the rotating component 20 and the fixed component 30 is reduced, the mutual extrusion force between the rotating component 20 and the fixed component 30 is increased, and the damping grease pressure is increased, so that the rotation resistance is increased; when the rotation resistance needs to be reduced, the adjusting piece 13 is reversely screwed out, so that the compression amount of the spring 24 is reduced, the gap between the rotating component 20 and the fixed component 30 is correspondingly increased, the mutual extrusion force between the rotating component 20 and the fixed component 30 is reduced, and the damping grease pressure is reduced, so that the rotation resistance is reduced.

Referring to fig. 7 to 9, fig. 7 is an exploded view of a knob structure 100a according to a second embodiment of the present invention, fig. 8 is an exploded view of the knob structure 100a shown in fig. 7 from another perspective, and fig. 9 is an assembled cross-sectional view of the knob structure 100a shown in fig. 7.

In the second embodiment of the present invention, the operation assembly 10, the rotation assembly 20 and the fixing assembly 30 have the same functions as those of the first embodiment, the shapes and the connection relations of the anti-skid wheel 11, the knob 12 and the adjusting member 13 in the operation assembly 10 are the same as those of the first embodiment, the shapes and the connection relations of the rotating shaft 23 and the spring 24 in the rotation assembly 20a are the same as those of the first embodiment, and the shapes and the connection relations of the bearing 31 and the cover plate 33 in the fixing assembly 30a are the same as those of the first embodiment, which are not described herein again.

The second embodiment differs from the first embodiment in that the rotating member 21a and the fixed member 32a are different components, the rotating member 21a in this embodiment has both functions of the rotating member 21 and the friction member 22 in the first embodiment, a friction plate 22a is installed in a hollow cavity of the rotating member 21a, the rotating member 21a is in mutual frictional contact with the fixed member 32a in the fixed assembly 30a through the friction plate 22a, and the friction plate 22a is a flat plate and has a similar function to the friction member 22 in the first embodiment.

The fixing element 32a includes a base plate 321a and an extending portion 322a, the base plate 321a in this embodiment has the same structure and connection relationship as the base plate 321 in the first embodiment, the extending portion 322a is a hollow circular truncated cone with an inclined surface, and the extending portion 322a is sleeved in the rotating element 21 a.

The rotating part 21a and the fixed part 32a in the second embodiment contact each other with a tapered inclined surface, and the planar damping contact in the first embodiment is changed into the inclined surface damping contact in the second embodiment by changing the shape of the contact surface of the damping grease, so that the knob structure 100a in the second embodiment can obtain finer damping change in the using process, and the resolution and accuracy of adjustment can be improved.

In the second embodiment, there is also a gap between the friction plate 22a of the rotating element 21a and the extension 322a of the fixed element 32a, the gap can store damping grease which is installed between the rotating element 20a and the fixed element 30a and is used for providing a rotational damping force, the damping grease is soaked on the friction surfaces of the rotating element 20a and the fixed element 30a, the rotating element 20a and the fixed element 30a can be isolated, the rotating element 20a and the fixed element 30a are prevented from directly contacting on the friction surfaces, and the problems of increased friction force and unsmooth rotating hand feeling are avoided.

It is understood that the assembly process of the knob structure 100a in the second embodiment is similar to the assembly process of the knob structure 100 in the first embodiment, the transmission process of the knob structure 100a in the second embodiment is similar to the transmission process of the knob structure 100 in the first embodiment, and the adjustment process of the rotation resistance of the knob structure 100a in the second embodiment is similar to the adjustment process of the rotation resistance of the knob structure 100 in the first embodiment, which is not repeated herein.

According to the knob structure provided by the invention, the gaps are formed between the rotating component and the fixed component, the gaps can store damping grease for providing a rotating damping force, the damping grease is soaked on the friction surfaces of the rotating component and the fixed component, the rotating component and the fixed component can be isolated, the rotating component and the fixed component are prevented from being in direct contact on the friction surfaces, and the problems of increased friction force and unsmooth rotating hand feeling are avoided.

The invention also provides a focusing knob adopting the knob structure, the focusing knob is used for adjusting the focus of external photographic equipment, the focusing knob comprises a detection piece 34, the detection piece 34 is sleeved at one end of the rotating shaft 23 far away from the adjusting piece 13, the detection piece 34 can transmit the rotating angle of the rotating shaft 23, namely the rotating angle of the rotating component 20 relative to the fixing component 30 to the external photographic equipment, and the external photographic equipment adjusts the focus according to the rotating angle, thereby completing the focusing process.

In this embodiment, the detecting element 34 is installed at the approximate center of the cover plate 33, the type of the detecting element 34 is a potentiometer, at this time, the detecting element 34 converts the rotation angle of the rotating shaft 23, that is, the rotation angle of the rotating assembly 20 relative to the fixed assembly 30, into an electrical signal, reflects the rotation angle through the change of the electrical signal and transmits the electrical signal to the external photographing and imaging device, and the external photographing and imaging device adjusts the focal length according to the electrical signal, thereby implementing the focusing process.

It should be understood that the detecting member 34 is not limited to being mounted on the cover plate 33, and in other embodiments, the detecting member 34 may be mounted on another component of the focus knob, and the type of the detecting member 34 is not limited to being a potentiometer, and other electronic components capable of sensing the rotation angle, such as a photoelectric angle sensor, may be used.

In the present embodiment, the focusing knob is applied to an aerial device on an unmanned aerial vehicle. It is understood that in other embodiments, the knob structure 100 is not limited to being applied to only an aerial device on an unmanned aerial vehicle, but may also be applied to other shooting occasions requiring manual focusing, such as surveying and mapping, a microscope, photography and photography.

The focusing knob provided by the invention adopts the focusing structure, gaps are arranged between the rotating assembly and the fixed assembly, damping grease for providing a rotating damping force can be stored in the gaps, the damping grease is soaked on friction surfaces of the rotating assembly and the fixed assembly, the rotating assembly and the fixed assembly can be isolated, and the focusing knob has good focusing hand feeling during focusing.

It can be understood that the knob structure provided by the invention is not limited to be applied only to the occasions requiring focusing, and the knob structure provided by the invention can also be applied to other occasions requiring manual control.

The invention also provides a remote controller adopting the focusing knob, wherein the focusing knob is arranged on the remote controller and is used for adjusting the focal length of the remote controller.

The invention also provides a cloud deck adopting the focusing knob, the focusing knob is arranged on the cloud deck, shooting equipment is arranged on the cloud deck, and the focusing knob is used for adjusting the focal length of the shooting equipment arranged on the cloud deck.

According to the knob structure provided by the invention, gaps are arranged between the rotating component and the fixed component, the gaps can store damping grease for providing a rotating damping force, the damping grease is soaked on friction surfaces of the rotating component and the fixed component, the rotating component and the fixed component can be isolated, the rotating component and the fixed component are prevented from being in direct contact on the friction surfaces, and the problems of increased friction force and unsmooth rotating hand feeling are avoided; the focusing knob adopting the knob structure has good focusing hand feeling; the remote controller adopting the focusing knob provided by the invention can effectively adjust the focal length; the holder adopting the focusing knob provided by the invention can effectively adjust the focal length of shooting equipment arranged on the holder.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.

Claims

1. A knob structure, its characterized in that: the knob structure comprises an operation assembly, a rotating assembly and a fixing assembly, the operation assembly is connected with the rotating assembly, the fixing assembly bears the operation assembly and the rotating assembly, the operation assembly can drive the rotating assembly to move relative to the fixing assembly, a gap is formed between the rotating assembly and the fixing assembly, the operation assembly is used for adjusting the size of the gap, the operation assembly comprises a knob, and the knob is of a hollow structure.

2. The knob structure according to claim 1, wherein: the operating assembly comprises an adjusting piece, and the adjusting piece and the rotating assembly are fixed.

3. The knob structure according to claim 2, wherein: the adjusting piece is connected with the knob and the rotating assembly, an elastic piece is arranged in the knob structure, and two ends of the elastic piece act on the knob and the rotating assembly respectively.

4. The knob structure according to claim 3, wherein: the operating assembly further comprises an anti-skid wheel, anti-skid grains are arranged on the outer side of the anti-skid wheel, the knob is sleeved with the anti-skid wheel, and the anti-skid wheel and the knob are fixed to each other.

5. The knob structure according to claim 3, wherein: the rotating assembly comprises a rotating shaft, one end of the rotating shaft extends into the knob and is connected with the adjusting piece, the other end of the rotating shaft is fixed on the fixing assembly, and the elastic piece is sleeved on the rotating shaft.

6. The knob structure according to claim 5, wherein: the rotating assembly comprises a rotating part, the rotating shaft penetrates through the rotating part and is fixed to the rotating part, the rotating part is sleeved with the rotating knob, the rotating knob is fixed to the rotating part, and the rotating part is sleeved with the fixing assembly.

7. The knob structure according to claim 6, wherein: the rotating assembly comprises a friction piece, one end of the friction piece is abutted to the elastic piece, the other end of the friction piece is embedded with the rotating piece, and the rotating shaft penetrates through the friction piece.

8. The knob structure according to claim 6, wherein: a friction plate is arranged in the rotating piece, one end of the friction plate is abutted against the elastic piece, and the rotating shaft penetrates through the friction plate.

9. The knob structure according to claim 7 or 8, wherein: the fixing assembly comprises a fixing piece and a bearing, the rotating shaft is sleeved with the bearing, the bearing is fixed in the fixing piece, the rotating shaft penetrates through the fixing piece, and the rotating piece can rotate relative to the fixing piece.

10. The knob structure according to claim 9, wherein: the fixing piece comprises a base plate and an extending part arranged on the base plate, the rotating part is sleeved on the extending part, a groove is formed in the base plate, and the groove is used for containing and storing lubricating grease in the knob structure.

11. The knob structure according to claim 10, wherein: the fixing component further comprises a control panel, and the control panel is connected to the fixing piece.

12. The knob structure according to claim 11, wherein: the extension part is perpendicular to the base plate, the upper end face of the extension part is a plane, and the rotating part is in mutual contact with the fixing part through the upper end face.

13. The knob structure according to claim 11, wherein: the extension part is inclined to the base plate, the side face of the extension part is an inclined face, and the rotating part is in contact with the fixing part through the side face.

14. A focus knob, characterized by: the focusing knob adopts a knob structure according to any one of claims 1 to 13, and further comprises a detection piece, wherein the detection piece is arranged in the knob structure, and the focusing knob is used for adjusting the focal length.

15. The focus knob of claim 14, wherein: the detection piece is a potentiometer.

16. The utility model provides a remote controller, includes the remote controller body and installs focusing knob on the body, its characterized in that: the focus knob of any of claims 14-15, the focus knob to adjust focus.

17. The utility model provides a cloud platform, includes the cloud platform body, installs shooting equipment on the body and install focusing knob on the body, its characterized in that: the focus knob of any of claims 14-15, the focus knob to adjust a focus of the camera.