WO2019127367A1

WO2019127367A1 - Rotational structure and knob device

Info

Publication number: WO2019127367A1
Application number: PCT/CN2017/119847
Authority: WO
Inventors: 王汝之
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2017-12-29
Filing date: 2017-12-29
Publication date: 2019-07-04
Also published as: CN110383203A; CN110383203B

Abstract

Provided are a rotational structure and a knob device (1000). The rotational structure comprises: a fixed member (1); a rotating member (2), with the rotating member (2) being rotatably arranged on the fixed member (1) by means of a rotating shaft (13); and a rubbing structure (3) arranged between the fixed member (1) and the rotating member (2). The rubbing structure (3) comprises a roller (302) arranged between the fixed member (1) and the rotating member (2). A rolling face of the roller (302) closely abuts against at least one of the fixed member (1) and the rotating member (2), thereby being capable of providing rolling damping when the rotating member (2) rotates. The rotational structure and the knob device are uniform in terms of damping during rotation.

Description

Rotating structure and knob device

Technical field

The present invention relates to a rotating structure, and more particularly to a rotating structure and knob device applied to a knob device.

Background technique

Knob devices are widely used as adjustment switches in electronic devices. The knob device is generally composed of a rotating housing, a bottom fixing portion and a friction mechanism that provides damping inside. The rotating housing has a certain resistance, and the resistance can prevent excessive rotation and free rotation. The accuracy of the parameter adjustment and the comfort of use are directly related to the damping provided by the friction mechanism. Uniform damping is a key factor affecting the experience and adjustment accuracy. Therefore, how to make the knob uniform in different states and usage time is an important factor determining the performance of the product.

Summary of the invention

In view of this, it is necessary to provide a rotating structure and knob device, which is uniform in damping under different states and usage times.

A rotating structure comprising:

Fastener;

a rotating member, the rotating member is disposed on the fixing member by a rotating shaft; and

a friction structure disposed between the fixing member and the rotating member, the friction structure including a roller disposed between the fixing member and the rotating member, a rolling surface of the roller and the fixing member, At least one of the rotating members abuts closely to provide rolling damping as the rotating member rotates.

A knob device comprising:

Fastener;

a friction structure disposed between the fixing member and the rotating member, the friction structure including a roller disposed between the fixing member and the rotating member, a rolling surface of the roller and the fixing member, At least one of the rotating members abuts closely to provide rolling damping as the rotating member rotates. The rotating structure and the knob device are uniformly damped during the rotation of the rotating member.

DRAWINGS

1 is a perspective view of a knob device according to an embodiment of the present invention.

Fig. 2 is a plan view of the knob device shown in Fig. 1.

Figure 3 is a cross-sectional view of the knob device of Figure 2 taken along line III-III.

4 is an exploded perspective view of the knob device shown in FIG. 1.

Fig. 5 is an exploded perspective view showing another perspective of the knob device shown in Fig. 1.

Figure 6 is a top plan view of the knob assembly of Figure 1 with a portion of the assembly removed.

Figure 7 is a plan view of a roller in accordance with an embodiment of the present invention.

Figure 8 is a schematic view showing the structure of a first friction member according to an embodiment of the present invention.

Main component symbol description

Knob device 1000

Fixing parts 1

Fixed base 10

First through hole 100

Fixed column 12

Shaft 13

Rotary shaft bearing 14

Second through hole 140

Rotating part 2

Rotating housing 20

Third through hole 200

Fixing device 22

Fifth through hole 220

Gasket 24

Fourth through hole 240

Friction structure 3

Rolling parts 30

Support frame 300

Scroll wheel 302

First friction member 32

Part 1 320

The second part 322

Second friction member 34

The invention will be further illustrated by the following detailed description in conjunction with the accompanying drawings.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or the component can be present. When a component is considered to "connect" another component, it can be directly connected to another component or possibly a central component. When a component is considered to be "set to" another component, it can be placed directly on another component or possibly with a centered component. The terms "vertical," "horizontal," "left," "right," and the like, as used herein, are for illustrative purposes only.

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, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and/or" used herein includes any and all combinations of one or more of the associated listed items.

The above described objects, features and advantages of the present invention will become more apparent from the aspects of the appended claims. The embodiments of the present invention are described in detail in conjunction with the accompanying drawings. When the embodiments of the present invention are described in detail, for the convenience of description, the cross-sectional views showing the structure of the device may not be partially enlarged according to the general proportion, and the schematic diagram is only an example, and The scope of protection of the invention should be limited.

The present invention provides a rotating structure including a fixing member, a rotating member, and a friction mechanism disposed between the fixing member and the rotating member, the friction mechanism being a roller disposed between the fixing member and the rotating member The rolling surfaces of the rollers are in rolling contact with the fixing member and the rotating member, respectively, to provide rolling friction. In some embodiments, at least one of the fixing member and the rotating member is provided with a resilient spacer at a position in contact with the rolling surface of the roller, and is provided by the rolling friction of the elastic spacer and the roller. Rotational damping.

The rotating structure provided by the present invention can be applied to any device having a relatively rotating structure, such as a knob device. The details will be described below with reference to the accompanying drawings.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , a knob device 1000 according to an embodiment of the present invention includes a fixing member 1 , a rotating member 2 , and a friction disposed between the fixing member 1 and the rotating member 2 . Structure 3. The rotating member 2 is rotatable relative to the fixing member 1. When rotated, the friction structure 3 provides rotational damping to prevent excessive or free rotation of the rotating member 2.

The fixing member 1 includes a fixed base 10 , a fixing column 12 , a rotating shaft 13 and a rotating shaft bearing 14 . The fixed base 10 is substantially disc-shaped, and a first through hole 100 is disposed in the middle for the rotating shaft 13 to pass through. The shaft bearing 14 is substantially circular and disposed in the first through hole 100 of the fixed base 10 . A second through hole 140 is disposed at a center of the rotating shaft bearing 14 , and the second through hole 140 is coaxially disposed with the first through hole 100 . The rotating shaft 13 is disposed on the fixed base 10 through the second through hole 140. The shaft bearing 14 can be fixedly engaged with the inner side wall of the first through hole 100 by an interference fit, and the rotating shaft 13 can be interference-fitted or form-fitted with the shaft bearing 14 to realize the shaft bearing 14 The connection is fixed such that the rotating shaft 13 is fixedly disposed on the fixed base 10. It can be understood that the fixed connection manner between the shaft bearing 14 and the first through hole 100, and the fixed connection manner between the rotating shaft 13 and the rotating shaft bearing 14 are not limited to the above-mentioned interference. The fitting and the form fit can also be any suitable fixed connection manner as long as the rotating shaft 13 can be fixedly connected to the fixed base 10. For example, the rotating shaft bearing 14 and the inner side wall of the first through hole 100 are fixed by a snap fit, and the rotating shaft 13 and the rotating shaft bearing 14 are fixed by a form fit; or the rotating shaft bearing 14 and the first The inner side wall of a through hole 100 is form-fitted, and the rotating shaft is in an interference fit with the shaft bearing 14. The fixing post 12 can fix the fixing member 1 to a device such as a remote controller or other electronic device. It can be understood that the fixing post 12 can also be replaced by other suitable structures. For example, a fixing hole is disposed on the fixing base 10, and the fixing base 10 is fixed by a fixing device such as a screw. Electronic device.

The rotating member 2 includes a rotating housing 20, a fixing device 22 that fixes the rotating housing 20 to the rotating shaft 13, and a spacer 24 disposed between the fixing device 22 and the rotating housing 20. The rotating housing 20 is rotatably disposed on the fixed base 10. The rotating housing 20 is substantially cylindrical and includes a third through hole 200 disposed coaxially with the first through hole 100. The spacer 24 is substantially circular, and the outer diameter of the spacer 24 is larger than the inner diameter of the third through hole 200, so that the spacer 24 can be supported above the peripheral wall of the third through hole 200. A fourth through hole 240 is disposed at a center of the spacer 24, and the rotating shaft 13 can pass through the fourth through hole 240. A fifth through hole 220 is disposed at a center of the fixing device 22, and the rotating shaft 13 is sequentially connected to the fixing device 22 through the fourth through hole 240 and the fifth through hole 220, thereby realizing the rotating shaft 13 is rotatably coupled to the rotating housing 20. In some embodiments, the fixing device 22 is fixed on the rotating housing 20, the fifth through hole 220 of the fixing device 22 is provided with an internal thread, and the rotating shaft 13 is correspondingly provided with an external thread. The fixing device 22 is screwed to the rotating shaft 13 so that the rotating shaft 13 can rotate relative to the fixing device 22 and the rotating housing 20.

It can be understood that, in some embodiments, the fixing device 22 and the spacer 24 may also be omitted, and an internal thread is directly disposed in the third through hole 200 of the rotating housing 20, The rotating shaft 13 is disposed in the third through hole 200 by a cooperative rotation of the external thread and the internal thread. It is to be understood that, in addition to the above-exemplified structure, the fixing structure between the rotating housing 20 and the rotating shaft 13 may be any other suitable fixing structure, as long as the rotating shaft 13 can be The rotating housing 20 is rotatably connected.

The friction structure 3 includes a rolling member 30 and a first friction member 32 disposed between the rolling member 30 and the rotating member 2 and a second portion disposed between the rolling member 30 and the fixing member 1 Friction member 34. The first friction member 32 is fixedly coupled to the rotating member 2, and the second friction member 34 is fixedly coupled to the fixing member 1. The rolling member 30 includes a support frame 300 and at least one roller 302 disposed on the support frame 300. The rolling member 30 is in close contact with the first friction member 32 and the second friction member 34 by the rolling surface of the roller 302, so that when the rotating member 2 is rotated relative to the fixing member 1, the A rolling frictional force is generated between the rolling surface of the roller 302 and the first friction member 32 and the second friction member 34, and the rolling friction force generates a rolling between the rotating member 2 and the fixing member 1. Damping.

Referring to FIG. 4 and FIG. 5, when the knob device 1000 is assembled, the shaft bearing 14 may be first fixed to the first through hole 100, and then the rotating shaft 13 is passed through the second through hole. Fixed to the shaft bearing 14, and then fixing the second friction member 34 to the fixed base 10, the support frame 300 is sleeved on the rotating shaft 13; fixing the first friction member 32 To the rotating housing 20, the rotating housing 20 is then placed on the fixed base 10, and the rotating shaft 13 is passed out from the third through hole 200, and the spacer 24 is placed on The rotating shaft 13 is then fixed to the rotating shaft 13 by the fixing device 22.

In some embodiments, the first friction member 32, the second friction member 34, and the support frame 300 are all annular. It can be understood that in other embodiments, the first friction member 32, the second friction member 34, and the support frame 300 may also be other suitable shapes, such as a star shape, an ellipse, a cone shape, etc., as long as The rolling surface of the roller 302 on the support frame 300 can be brought into close contact with the first friction member 32 and the second friction member 34, respectively.

In some embodiments, the roller 302 is cylindrical. It can be understood that in other embodiments, the roller 302 can also be other suitable shapes, such as a taper. In this case, the first friction member 32 and the second friction member 34 can also be correspondingly adjusted in shape. Cone.

In some embodiments, at least one of the first friction member 32 and the second friction member 34 is an elastic material, and the roller 302 is a rigid material, and the elastic material is deformed to generate a damping force, so that the rotating member 2 is rotated. The damping forces are basically the same in different rotation states (stationary, acceleration and deceleration, reverse rotation, etc.). It can be understood that in other embodiments, the first friction member 32 and the second friction member 34 may be rigid materials, and the roller 302 is an elastic material, and the elastic deformation of the roller 302 generates a damping force. Or the first friction member 32, the second friction member 34, and the roller 302 are both elastic materials.

In some embodiments, in order to make the elastic deformation more uniform, the hardness of the elastic material may be set to different values on different thicknesses. For convenience of description, the first friction member 32 is taken as an example, as shown in FIG. The first friction member 32 can be divided into two parts, the first portion 320 abuts the rolling surface of the roller 302, and the second portion 322 is fixedly connected with the rotating member 2, if the first portion 320 and the The hardness of the second portion 322 is the same. When the first portion 320 is pressed by the rolling surface, the pressing force is transmitted to the second portion through the first portion 320, and the deformation is less than that. The deformation of the first portion 320 is described. In the present embodiment, the hardness of the first portion 320 is greater than the hardness of the second portion 322, and when the first portion 320 is pressed by the rolling surface, the pressing force is transmitted through the first portion 320. Until the second portion has weakened, but due to the small hardness of the second portion 322, a certain degree of deformation also occurs, and the amount of deformation of the second portion 322 is closer to the amount of deformation of the first portion 320. Thereby, the overall deformation amount of the elastic material is made more uniform.

In some embodiments, as shown in FIG. 6 and FIG. 7 , the support frame 300 has a circular shape, and a plurality of the rollers 302 are disposed on a circumferential surface of the ring, and the roller 302 is opposite to the ring. The center of the circle is asymmetrically arranged, and/or the angle between the adjacent two rollers is different, so that the plastic deformation of the elastic material can be weakened and the elastic recovery time of the elastic material is prolonged. It can be understood that, in other embodiments, the plurality of the rollers 302 are different in axial distance from the support frame 300, and are arranged in a staggered arrangement.

In order to avoid the wear caused by the rolling friction and make the rotation smoother, at least one groove-like structure may be provided between the support frame 300 and the first friction member 32 and the second friction member 34. The structure has an oil storage function to thereby lubricate the rolling friction.

In the above embodiment, the rotating shaft 13 is screwed with the fixing device 22, and the position of the rotating shaft 13 relative to the rotating member 2 can be adjusted by rotating the fixing device 22. The rotating shaft 13 is opposite to the rotating member 2 Different positions can apply different pressures to the rolling surface of the roller 302, so that the degree of deformation of the elastic material can be adjusted to achieve different sizes of damping.

In the above embodiment, the rotating shaft 13 is fixedly connected to the fixing member 1 and is rotatably connected with the rotating member 2. It can be understood that in other embodiments, the rotating shaft 13 can also be coupled with the rotating member. 2 is fixedly connected, and is rotatably connected to the fixed joint as long as the rotating member 2 can be rotatably disposed on the fixing member 1.

In the above embodiment, the roller surface of the roller 302 is in close contact with the fixing member 1 and the rotating member 2, and between the rolling surface and the fixing member 1 during the rotation of the rotating member, Both the rolling surface and the rotating member 2 have rolling frictional force. It can be understood that, in some embodiments, the rolling member 3 can also be fixedly connected with one of the fixing member 1 or the fixing member 2, and the roller surface provided thereon and the other one of them The two are in close contact so that a rolling friction is generated only between the roller face and the other of them.

In addition, those skilled in the art can make various other changes and modifications in accordance with the technical concept of the present invention, and all such changes and modifications are within the scope of the claims of the present invention.

Claims

A rotating structure, characterized in that the rotating structure comprises:

Fastener;

a rotating member, the rotating member is disposed on the fixing member by a rotating shaft; and

a friction structure disposed between the fixing member and the rotating member, the friction structure including a roller disposed between the fixing member and the rotating member, a rolling surface of the roller and the fixing member, At least one of the rotating members abuts closely to provide rolling damping as the rotating member rotates.
The rotating structure according to claim 1, wherein said roller is disposed on a support frame, and said support frame is disposed between said fixing member and said rotating member.
The rotating structure according to claim 2, wherein said support frame is annular and said roller is cylindrical.
The rotating structure according to claim 2, wherein the number of the rollers is plural, and is asymmetrically disposed with respect to an axis of the support frame.
The rotating structure of claim 4 wherein the angle between adjacent rollers is different.
The rotating structure according to claim 1, wherein said rotating shaft is fixed to one of said rotating member and said fixing member, and the other end of said rotating shaft and said rotating member and said fixing member The other rotates the connection.
A rotary structure according to claim 6, wherein said rotating shaft is screwed to the other of said rotating member and said fixing member.
The rotating structure according to claim 7, wherein one end of the rotating shaft connected to the other of the rotating member and the fixing member is provided with an external thread, and the rotating member and the fixing member are another One is screwed to the rotating shaft by a fixing device provided with an internal thread.
The rotating structure according to claim 2, wherein the friction structure further comprises a first friction member and a second friction member fixedly coupled to the rotating member and the fixing member, respectively, the first friction member And the second friction member is in close contact with the rolling surface of the roller.
The rotary structure according to claim 9, wherein at least one of the first friction member and the second friction member is an elastic material.
The rotating structure according to claim 10, wherein said elastic material has different hardnesses at different thicknesses.
The rotating structure of claim 10 wherein said roller is a rigid material.
The rotating structure according to claim 9, wherein said roller is an elastic material, and said first friction member and said second friction member are rigid materials.
The rotating structure according to claim 9, wherein the support frame and at least one of the first friction member and the second friction member are provided with a groove structure, and the groove structure can be stored lubricating oil.
A knob device, characterized in that the knob device comprises:

Fastener;

a rotating member, the rotating member is disposed on the fixing member by a rotating shaft; and

a friction structure disposed between the fixing member and the rotating member, the friction structure including a roller disposed between the fixing member and the rotating member, a rolling surface of the roller and the fixing member, At least one of the rotating members abuts closely to provide rolling damping as the rotating member rotates.
A knob device according to claim 15, wherein said roller is disposed on a support frame, and said support frame is disposed between said fixing member and said rotating member.
A knob device according to claim 16, wherein said support frame is annular and said roller is cylindrical.
The knob device according to claim 16, wherein the number of the rollers is plural, and is asymmetrically disposed with respect to an axis of the support frame.
A knob device according to claim 18, wherein the angle between adjacent rollers is different.
The knob device according to claim 15, wherein the rotating shaft is fixed to one of the rotating member and the fixing member, and the other end of the rotating shaft and the rotating member and the fixing member are The other rotates the connection.
A knob device according to claim 20, wherein said rotating shaft is screwed to the other of said rotating member and said fixing member.
The knob device according to claim 21, wherein one end of the rotating shaft connected to the other of the rotating member and the fixing member is provided with an external thread, and the rotating member and the fixing member are different One is screwed to the rotating shaft by a fixing device provided with an internal thread.
The knob device according to claim 16, wherein the friction structure further comprises a first friction member and a second friction member fixedly coupled to the rotating member and the fixing member, respectively, the first friction member And the second friction member is in close contact with the rolling surface of the roller.
The knob device according to claim 23, wherein at least one of the first friction member and the second friction member is an elastic material.
A knob device according to claim 24, wherein said elastic material has different hardnesses at different thicknesses.
A knob device according to claim 24, wherein said roller is a rigid material.
A knob device according to claim 23, wherein said roller is an elastic material, and said first friction member and said second friction member are rigid materials.
The knob device according to claim 23, wherein the support frame and at least one of the first friction member and the second friction member are provided with a groove structure, and the groove structure can be stored lubricating oil.