WO2021134472A1

WO2021134472A1 - Foldable device, unmanned aerial vehicle and handheld gimbal

Info

Publication number: WO2021134472A1
Application number: PCT/CN2019/130489
Authority: WO
Inventors: 熊荣明; 农贵升; 严绍军
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-07-08
Also published as: CN112638765A

Abstract

Disclosed is a foldable device. A first body (10) and a second body (20) of the foldable device are rotatably connected by means of a rotary connecting assembly (30). The rotary connecting assembly (30) comprises: a first component (31) fixedly connected to the first body (10), and a second component (32) connected to the first component (31) and fixedly connected to the second body (20), wherein the second component (32) can rotate, relative to the first component, to a first position, a middle position and a second position, such that the first body (10) and the second body (20) switch between a folded state and an unfolded state; a first damping portion (301a) and a second damping portion (301b) are arranged between the first component (31) and the second component (32), the first damping portion (301a) is used for preventing the second component (32) from rotating from the middle position to the first position, and the second damping portion (301b) is used for preventing the second component (32) from rotating from the middle position to the second position; and first rotational damping of the first damping portion (301a) and second rotational damping of the second damping portion (301b) have different rates of change. Further disclosed are an unmanned aerial vehicle and a handheld gimbal.

Description

Foldable equipment, unmanned aerial vehicle and handheld gimbal

Technical field

The embodiments of the present invention relate to the technical field of mechanical structures, in particular to foldable equipment, unmanned aerial vehicles, and handheld pan-tilts.

Background technique

Some parts of products such as handheld gimbals and unmanned aerial vehicles usually need to be folded. For example, between the handle of the handheld gimbal and the swivel arm, the body of the unmanned aerial vehicle and the arm usually need to be folded and unfolded. It can be in an unfolded state when in use, and can be folded up for storage when not in use.

At present, handheld gimbals, unmanned aerial vehicles, etc. are easy to pinch their hands during the unfolding and folding process, and safe operation cannot be guaranteed. Therefore, it is generally hoped that products such as handheld gimbals and unmanned aerial vehicles can be operated safely, which is an urgent problem to be solved.

Summary of the invention

In view of the foregoing defects in the prior art, embodiments of the present invention provide a foldable device, an unmanned aerial vehicle, and a handheld pan/tilt.

A first aspect of an embodiment of the present invention provides a foldable device, including a first body and a second body, the first body and the second body are rotatably connected by a rotating connection assembly, wherein the rotating connection assembly include:

The first component is fixedly connected to the first body;

The second part is connected to the first part and fixedly connected to the second shaft arm; the second part can be rotated relative to the first part to a first position, an intermediate position and a second position to Switching the first body and the second body between a folded state and an unfolded state;

A damping assembly is provided between the first part and the second part, the damping assembly includes a first damping part and a second damping part, and the first damping part is used to prevent the second part from rotating from the intermediate position To the first position, the second damping part is used to prevent the second component from rotating from the intermediate position to the second position;

The rate of change of the first rotational damping provided by the first damping portion is different from the rate of change of the second rotational damping provided by the second damping portion.

A second aspect of the embodiments of the present invention provides an unmanned aerial vehicle, including an arm and a fuselage, the arm and the fuselage are rotatably connected by a rotating connection assembly, wherein the rotating connection assembly includes:

The first component is fixedly connected to the fuselage;

The second part is connected to the first part and fixedly connected to the arm; the second part can be rotated relative to the first part to a first position, an intermediate position, and a second position, so that all The arm and the fuselage are switched between a folded state and an unfolded state;

A third aspect of the embodiments of the present invention provides a handheld pan/tilt head, including a first shaft arm and a second shaft arm, the first shaft arm and the second shaft arm are rotatably connected by a rotating connection assembly; wherein, The rotating connection components include:

The first component is fixedly connected to the first shaft arm;

The second part is connected to the first part and fixedly connected to the second shaft arm; the second part can be rotated relative to the first part to a first position, an intermediate position and a second position to Switching the first shaft arm and the second shaft arm between a folded state and an unfolded state;

Based on the foregoing, the foldable equipment, unmanned aerial vehicle, and handheld pan/tilt provided by the embodiments of the present invention can effectively reduce the unfolding and folding speed due to the damping component, solve the problem of gripping hands to a certain extent, and ensure safe use, and, When switching between the folded state and the unfolded state, the corresponding damping change rate is different. Therefore, the unfolding speed and the folding speed can be different to meet individual requirements.

Description of the drawings

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative labor.

Figure 1 is a top view of a foldable device provided by an embodiment of the present invention;

Figure 2 is a top view of another foldable device provided by an embodiment of the present invention;

Figure 3 is a side view of a foldable device provided by an embodiment of the present invention;

4 is a schematic structural diagram of a rotating connection assembly in a foldable device according to an embodiment of the present invention;

5 is a schematic diagram of the structure of the first part of the rotating connection assembly in FIG. 4;

6 is a schematic diagram of an exploded structure of a rotating connection assembly in a foldable device according to an embodiment of the present invention;

7 is a schematic diagram of a state when the second component in the rotating connection assembly is in an intermediate position according to an embodiment of the present invention;

8 is a schematic diagram of a state in which the second component in the rotating connection assembly is in the first position A according to the embodiment of the present invention;

9 is a schematic diagram of a state in which the second component in the rotating connection assembly is in the second position B according to the embodiment of the present invention;

FIG. 10 is a structural schematic diagram 1 of an unmanned aerial vehicle provided by an embodiment of the present invention;

FIG. 11 is a second structural diagram of an unmanned aerial vehicle provided by an embodiment of the present invention;

Figure 12 is a top view of a handheld pan/tilt provided by an embodiment of the present invention;

Figure 13 is a top view of another handheld pan/tilt provided by an embodiment of the present invention;

Fig. 14 is a side view of a handheld pan/tilt provided by an embodiment of the present invention.

Detailed ways

The following clearly describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

The "including" mentioned in the entire specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within the acceptable error range, those skilled in the art can solve the technical problem within a certain error range, and basically achieve the technical effect.

In addition, the term "connected" herein includes any direct and indirect means of connection. Therefore, if it is described in the text that a first device is connected to a second device, it means that the first device can be directly connected to the second device, or indirectly connected to the second device through other devices.

It should be understood that the term "and/or, and/or" used in this article is only an association relationship describing associated objects, which means that there can be three relationships, for example, A1 and/or B1 can mean that A1 exists alone, There are three cases of A1 and B1 at the same time, and B1 alone. In addition, the character "/" in this text generally means that the associated objects before and after are in an "or" relationship.

In the following, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. If there is no conflict with each other, those skilled in the art can combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification.

Example one

Figure 1 is a top view of a foldable device provided by an embodiment of the present invention; Figure 2 is a top view of another foldable device provided by an embodiment of the present invention; Figure 3 is a side view of a foldable device provided by an embodiment of the present invention .

As shown in FIGS. 1 to 3, the foldable device provided in this embodiment includes a first body 10 and a second body 20, and the first body 10 and the second body 20 are rotatably connected by a rotating connection assembly 30. Among them, the foldable device may be any product that requires a folding structure, such as an unmanned aerial vehicle, a handheld pan/tilt, and a mobile robot, which is not limited in this embodiment.

For example, for an unmanned aerial vehicle, the first body 10 may be the fuselage of the unmanned aerial vehicle, and the second body 20 may be the arm of the unmanned aerial vehicle, or the first body 10 may be the fuselage of the unmanned aerial vehicle. The second body 20 is a tripod of the unmanned aerial vehicle, or the first body 10 is one of the components on the unmanned aerial vehicle, and the second body 20 is another component on the unmanned aerial vehicle, which is not limited in this embodiment. For the handheld pan/tilt, the first body 10 may be the first pivot arm of the handheld pan/tilt, and the second body 20 may be the second pivot arm of the handheld pan/tilt, or other parts that need to be folded. Make a limit.

Of course, the foldable device provided in this embodiment is not limited to the products exemplified above. In actual situations, it may also be any other foldable device.

4 is a schematic structural diagram of a rotary connection assembly in a foldable device according to an embodiment of the present invention; FIG. 5 is a structural schematic diagram of a first part of the rotary connection assembly in FIG. 4; FIG. 6 is a foldable according to an embodiment of the present invention A schematic diagram of an exploded structure of a rotating connection component in the device. Please refer to FIG. 1, FIG. 2 and FIG. 3, the rotating connection assembly 30 includes a first part 31 and a second part 32.

As shown in FIG. 3, the first component 31 is fixedly connected to the first body 10. The second part 32 is connected to the first part 31 and fixedly connected to the second body 20. Wherein, the first component 31 and the first body 10 can be detachably connected, such as screw connection, snap connection, etc., or the first component 31 and the first body 10 can be non-detachably connected, such as welding, Riveting, gluing, etc., or alternatively, the first component 31 and the first body 10 may be integrally formed, for example, integral injection molding, etc., which is not specifically limited in this embodiment. Similarly, the second component 32 and the second body 20 can also be connected in any one of detachable connection, non-detachable connection, integral molding, etc., which will not be repeated here.

The second component 32 and the first component 31 can be coaxially connected. Specifically, the second component 32 can be sleeved outside the first component 31 or inserted into the first component 31, or the two can be coaxially connected through a connecting shaft. Set up. Or, in some embodiments, the second component 32 is provided outside the first component 31, and the second component 32 can rotate around the first component 31 with the first component 31 as a center. Of course, the present invention is not limited to this.

As shown in Figures 1 to 3, the second part 32 can rotate relative to the first part 31 to a first position A, an intermediate position O, and a second position B, so that the first body 10 and the second body 20 are in a folded state Switch between and expanded state.

In this embodiment, as shown in FIG. 1, when the second member 32 is in the first position A relative to the first member 31, the first body 10 and the second body 20 are in an unfolded state; the second member 32 is relative to the first When the component 31 is in the second position B, the first body 10 and the second body 20 are in a folded state.

In the structure shown in FIG. 1, since the first part 31 is fixedly connected to the first body 10, and the second part 32 is fixedly connected to the second body 20, the second part 32 rotates from the intermediate position O relative to the first part 31 In the process of reaching the first position A, the second body 20 can rotate clockwise from the intermediate position O to the unfolded state. In addition, during the process in which the second member 32 rotates from the intermediate position O to the second position B relative to the first member 31, the second body 20 can be rotated counterclockwise from the intermediate position O to the folded state.

Of course, it can be understood that in other embodiments, such as shown in FIG. 2, when the second part 32 is in the first position A relative to the first part 31, the first body 10 and the second body 20 are folded State; when the second component 32 is at the second position B relative to the first component 31, the first body 10 and the second body 20 are in an unfolded state. As long as it can be realized that during the rotation of the second component 32 relative to the first component 31, the second body 20 is driven to rotate relative to the first body 10 to switch between the folded state and the unfolded state.

As shown in Figures 4 to 6, there is a damping assembly 301 between the first part 31 and the second part 32. The damping assembly 301 includes a first damping part 301a and a second damping part 301b. The two components 32 rotate from the intermediate position O to the first position A, and the second damping portion 301b is used to prevent the second component 32 from rotating from the intermediate position O to the second position B. The damping assembly 301 can effectively reduce the unfolding speed and the folding speed of the foldable device, which improves the operational safety to a certain extent.

In this embodiment, the rate of change of the first rotational damping provided by the first damping portion 301a and the second rotational damping provided by the second damping portion 301b are different. As a result, the unfolding speed and the folding speed of the foldable device can be made different to meet individual requirements. It should be noted that the change of the first rotation damping may be that the damping changes from large to small, or from small to large, which is not limited in this embodiment.

The foldable device provided by the embodiment of the present invention can effectively reduce the unfolding and folding speed due to the damping component, solve the problem of gripping hands to a certain extent, and ensure safe use. Moreover, when switching between the folded state and the unfolded state, The corresponding damping change rate is different, therefore, the expansion speed and the folding speed can be different to meet individual needs.

Example two

The inventor found through creative work that in the process of unfolding and folding handheld gimbals and unmanned aerial vehicles, in order to improve the operation efficiency, the folding speed is often too fast, which makes it easy to pinch the hands and cannot guarantee the safety of the operation. In order to ensure the operation Safety, it will lead to slow deployment speed, which will affect the efficiency of the operation.

In order to solve the above-mentioned problems in the prior art, this embodiment will further explain on the basis of the first embodiment. Specifically, in this embodiment, as shown in FIG. 1, when the second component 32 is relative to the first When a member 31 is in the first position A, the first body 10 and the second body 20 are in an unfolded state; when the second member 32 is in the second position B relative to the first member 31, the first body 10 and the second body 20 are in an unfolded state. In the folded state, the first damping portion 301a and the second damping portion 301b can be reasonably designed so that the rate of change of the first rotational damping provided by the first damping portion 301a can be greater than the second damping portion provided by the second damping portion 301a. The rate of change of rotational damping. In this way, fast deployment and slow folding of the foldable device can be realized, fast deployment can effectively ensure operation efficiency, and slow folding can effectively improve operation safety and prevent hands from being caught. It should be noted that, because the present invention adds a damping component, even if compared with the prior art, the deployment speed of the foldable device is lower than that in the prior art.

In other embodiments, when the second part 32 is in the first position A relative to the first part 31, the first body 10 and the second body 20 are in a folded state; the second part 32 is in the second position relative to the first part 31. In position B, when the first body 10 and the second body 20 are in the unfolded state, the first damping portion 301a and the second damping portion 301b can be reasonably designed so that the first rotation damping provided by the first damping portion 301a is effective The rate of change may be less than the rate of change of the second rotational damping provided by the second damping portion 301a. It can also realize the fast unfolding and slow folding of the foldable device.

Of course, it should be understood that in some special application scenarios, it may be desirable for the unfolding speed of the foldable device to be lower than the folding speed of the foldable device, that is, to achieve the effects of fast folding and slow unfolding. Those skilled in the art can specifically design the first damping portion 301a and the second damping portion 301b to achieve the desired purpose, which is not repeated in this embodiment.

Example three

This embodiment provides a specific structure of the damping component 301 based on the first or second embodiment. As shown in FIGS. 4-6, the first damping part 301a and the second damping part 301b of the damping component 301 of this embodiment Located on the first component 31, the second component 32 includes a topping device 321 for abutting contact with the first damping portion 301a and the second damping portion 301b.

The abutting device 321 abuts against the first damping portion 301a to generate a first rotation damping, and the abutting device 321 and the second damping portion 301b abut to generate a second rotation damping.

In the process of folding or unfolding the foldable device, the second body 20 rotates relative to the first body 10, and the second part 32 rotates relative to the first part 31, so that the abutting device 321 on the second part 32 and the first part A damping portion 301a is in abutting contact or abutting device 321 is in abutting contact with the second damping portion 301b. The first damping part 301a, the second damping part 301b and the topping device 321 are pressed against, and a certain frictional resistance is generated between the two, so that the first damping part 301a and the second damping part 301b hinder the topping device 321 together with the second damping part 301b. The rotation of the component 32 slows down the rotation of the second component 32 relative to the first component 31, or in other words, the rotation of the second body 20 relative to the first body 10 slows down, so that the unfolding or folding speed of the foldable device is slowed down and effectively improved The safety of the foldable device.

Further, the abutting device 321 may have elasticity; and/or, the first damping part 301a may have elasticity; and/or, the second damping part 301b may have elasticity. As a result, the contact between the abutting device 321 and the first damping portion 301a and/or the second damping portion 301b can be made elastic contact, so that the first member 31 and the second member 32 are in a relative rotation process, thereby making In the process of unfolding or folding, the foldable device can be more stable and gentle, and improve the user experience.

In this embodiment, preferably, the abutting device 321 has elasticity. The abutting device 321 includes an elastic member 3211 and abutting member 3212. The elastic member 3211 is abutting against the abutting member 3212, and the abutting member 3212 is used for contacting the first The damping portion 301a and the second damping portion 301b are in abutting contact.

In addition, the elastic member 3211 may specifically be an axial expansion spring. FIG. 7 is a schematic diagram of the state when the second member 32 in the rotating connection assembly is in the intermediate position O according to the embodiment of the present invention; as shown in FIG. 7, when the second member 32 is in the intermediate position, the elastic member 3211 can be in a compressed state , Figure 8 is a schematic diagram of a state where the second part of the rotary connection assembly is in the first position A according to an embodiment of the present invention; Figure 9 is a state where the second part of the rotary connection assembly is in the second position B according to an embodiment of the present invention Schematic diagram of the state; as shown in Figures 8 and 9, in the process of turning the second member 32 from the intermediate position to the first position A and the second position B, the elastic member 3211 can gradually expand or gradually return to the original from the compressed state Long state.

In some other embodiments, when the second member 32 is in the intermediate position, the elastic member 3211 can be in the original length state or the extended state, and the second member 32 is rotated from the intermediate position to the first position A and the second position B. In this case, the elastic member 3211 can be gradually compressed or gradually restored from the extended state to the original long state.

Of course, in some other embodiments, the elastic member 3211 may also be a rubber member or some other elastic members 3211. This embodiment is not particularly limited.

Please continue to refer to FIG. 7, the second component 32 may also include a sleeve 322. The abutting device 321 can be accommodated in the sleeve. The abutting device 321 and the sleeve 322 are circumferentially fixed, and the abutting device 321 can be mounted on the sleeve 322. The inner axial expansion and contraction.

The so-called abutment device 321 and sleeve 322 circumferentially fixed means that the abutment device 321 cannot rotate relative to the sleeve 322 in the circumferential direction. Specifically, the cross section of the inner side wall of the sleeve 322 may be non-circular, and the shape of the outer side wall of the abutting member 3212 in the abutting device 321 may match the shape of the inner side wall of the sleeve 322. In this embodiment, the sleeve The cross section of the inner side wall of the barrel 322 is rectangular, and the shape of the outer side wall of the abutting member 3212 matches the inner side wall of the sleeve 322. In this way, the purpose of the abutment member 3212 being unable to rotate relative to the sleeve 322 in the circumferential direction, that is, the abutment device 321 and the sleeve 322 are circumferentially fixed.

It is understandable that the abutting device 321 can also be matched with the inner wall of the sleeve 322 by other structures other than the abutting member 3212 to achieve the purpose of circumferentially fixing the abutting device 321 and the sleeve 322, for example, the sleeve The cross section of the inner side wall of 322 is non-circular, and the end of the abutting device 321 away from the abutting member 3212 matches the inner wall of the sleeve 322. Alternatively, an anti-rotation member is provided on the abutting device 321, for example, a protrusion protruding radially outward is provided on the abutting device 321, and an inner side wall of the sleeve 322 is provided for inserting the protrusion Wherein, the longitudinal direction of the groove extends in the axial direction parallel to the sleeve 322, and the circumferential positioning of the abutting device 321 and the sleeve 322 is realized through the cooperation of the protrusion and the groove. Of course, there are many ways to fix the abutment device 321 and the sleeve 322 in the circumferential direction, and those skilled in the art can design it according to the actual situation, and this embodiment does not give an example.

The sleeve 322 can be used for fixed connection with the second body 20. The abutting device 321 and the sleeve 322 are circumferentially fixed, so that when the user rotates the sleeve 322, the abutting device 321 is driven to rotate relative to the first component 31, and during the rotation, the abutting device 321 can be relative to the sleeve 322. The sleeve 322 is fixedly connected to the second body 20 in the axial direction. Therefore, during the rotation of the second member 32 relative to the first member 31, the abutting device 321 moves in the axial direction relative to the first member 301b to change the resistance. With the relative force between the top device 321 and the first part 301b, the second body 20 together with the sleeve 322 only have relative rotation with respect to the first body 10, and the second body 20 will not rotate relative to the first body in the axial direction. The body 10 generates movement.

The foldable device provided by the embodiment of the present invention may further include a rotating shaft 323, which passes through the first part 31 and the second part 32, and both ends of the rotating shaft 323 may be respectively provided for connecting the first part 31 and the second part 32 axially fixed axial limiter. Through the cooperation of the rotating shaft 323 and the axial stopper, the first part 31 and the second part 32 are relatively fixed in the axial direction, the structure is simple, and the function is reliable.

At least one of the axial limiting members at both ends of the rotating shaft 323 can be detachably connected to the rotating shaft 323. Specifically, the first axial limiting member 3231a used to axially fix the first component 31 may be non-detachably connected (for example, integrally formed) with the rotating shaft 323, and the second axial stopper 3231a used to axially fix the second component 32 The axial limiter 3231b can be detachably connected with the rotating shaft 323, or the other way around, that is, the first axial limiter 3231a is detachably connected with the rotating shaft 323, and the second axial limiter 3231b is not connected with the rotating shaft 323. Detachable connection (for example, integrally formed). Of course, the first axial limiting member 3231a and the rotating shaft 323, and the second axial limiting member 3231b and the rotating shaft 323 can be detachably connected. In this way, the first axial limiting member 3231a and the rotating shaft 323 can be detachably connected. The detachable one of the axial limiter 3231a and the second axial limiter 3231b is detached from the shaft 323, and the axial fixation between the first part 31 and the second part 32 is released, so that the first part 31 and the second part 32 are fixed in the axial direction. The component 31 and the second component 32 can be separated, and the first component 31 and the second component 32 can be inspected and repaired, such as cleaning dust and impurities or replacing aging components, etc., to ensure the reliable operation of the first component 31 and the second component 32.

In this embodiment, the elastic member 3211 may be cylindrical, and the elastic member 3211 may be sleeved outside the rotating shaft 323. The rotating shaft 323 can prevent the elastic member 3211 from deflecting, so that the elastic member 3211 only stretches in the axial direction. .

One end of the elastic member 3211 may be fixedly connected or abutted with the sleeve 322, and the other end may be fixedly connected or abutted with the abutting member 3212. When the elastic member 3211 abuts against the abutting member 3212, the sleeve 322 may have a protective The detachment piece is used to prevent the abutting piece 3212 from falling off the sleeve 322.

For the first part 31, in this embodiment, as shown in FIG. 5, the first part 31 may include a cam. The cam includes a first cam wall C1 and a second cam wall C2. The first cam wall C1 forms a first cam wall. The damping portion 301a and the second cam wall C2 form a second damping portion 301b. Since the cam has an up-and-down slope, when the second member 32 rotates relative to the first member 31, the abutting device 321 is in contact with the cam. Under the action of the slope of the cam, the elastic member 3211 can expand and contract, and the abutting device The abutment member 3212 of the 321 can be raised and lowered in the axial direction. The height of the abutment member 3212 is different, and the corresponding elastic member 3211 has different elasticity. For the user, the damping experience is also different, which is understandable Yes, in the embodiment shown in FIG. 4, the higher the height of the abutting member 3212, the greater the compression of the elastic member 3211, and the greater the corresponding rotational damping.

In this embodiment, the first cam wall C1 may be a slope, the second cam wall C2 may be a slope, and the slope of the first cam wall C1 is different from the slope of the second cam wall C2. By designing the slope of the slope of the first cam wall C1 and the slope of the second cam wall C2 to be different, the rate of change of the first rotation damping of the first damping portion 301a and the second rotation damping of the second damping portion 301b can be made Different, so as to achieve the purpose of different unfolding speed and folding speed of the foldable device. In this embodiment, preferably, the slope of the first cam wall C1 is greater than the slope of the second cam wall C2, so that the effects of rapid expansion and slow folding can be achieved.

In some other embodiments, the first cam wall C1 may be a curved surface, the second cam wall C2 is a curved surface, and the curvature of the first cam wall C1 is different from the curvature of the second cam wall C2. Similarly, by designing the curvature of the curved surface of the first cam wall C1 and the curved surface of the second cam wall C2 to be different, the first rotational damping of the first damping portion 301a and the second rotational damping of the second damping portion 301b can be made The rate of change is different, so as to achieve the purpose of different unfolding speed and folding speed of the foldable device. In this embodiment, the curvature of the first cam wall C1 is greater than the curvature of the second cam wall C2. As a result, the effects of rapid expansion and slow folding can be achieved.

Further, when the second member 32 rotates from the intermediate position O to the first position A, the abutting device 321 slides from the top of the cam to the bottom of the first cam wall C1; the second member 32 rotates from the intermediate position O to the first position A. During the second position B, the abutting device 321 slides from the top of the cam to the bottom of the second cam wall C2.

Taking for example that the slope or curvature of the first cam wall C1 is greater than the slope or curvature of the second cam wall C2, as shown in FIG. 7, the middle position O is at the top of the cam, and the second member 32 is at the middle position O, and the abutting device 321 Abut against the top of the cam, the elastic member 3211 is in the largest amount of deformation. When the second member 32 rotates from the intermediate position O to the first position A, the abutting device 321 descends, and the elastic potential energy of the elastic member 3211 is gradually released. After the second member 32 reaches the bottom of the first cam wall C1 (as shown in FIG. 8), under the action of the elastic member 3211, the second member 32 can be maintained in the expanded state, and the second member 32 rotates from the intermediate position O to In the process of the second position B, the abutting device 321 descends, and the elastic potential energy of the elastic member 3211 is gradually released. When the second member 32 reaches the bottom of the second cam wall C2 (as shown in FIG. 9), the elastic member 3211 Under the action, the second component 32 can be maintained in a folded state. During the rotation of the second part 32 relative to the first part 31 from the intermediate position O to the first position A, the first rotation damping received is gradually reduced, and the second part 32 relative to the first part 31 During the rotation of the intermediate position O to the second position B, the second rotation damping experienced is also gradually reduced.

It should be noted that, described in the embodiment of the present invention, that the second component 32 is at the intermediate position O, the first position A, and the second position B all refer to the top end of the abutting device 321 of the second component 32 (the top Item 3212) location.

Furthermore, preferably in this embodiment, as shown in FIG. 5, the first component 31 may include two cams, and the two cams are arranged symmetrically centered on the axis of the first component 31.

The shape of one end of the abutting device 321 used to abut the cam can match the shape formed by the two cams. When the second part 32 is at the first position A relative to the first part 31, the abutting device 321 is The one end used for abutting against the cam is in engagement with the two cams. In this way, when the second component 32 is in the first position A, the first body 10 and the second body 20 can be in the most stable state, that is, in the unfolded state, the first body 10 and the second body 20 can be in the most stable state. The relative state of the drone is very stable. For example, in the unfolded state, the arm can be stably maintained in the unfolded state. If the arm needs to be folded, a large external force must be used to overcome the damping component. Resistance can rotate the arm, so that the arm can be better maintained in the unfolded state. During the flight of the unmanned aerial vehicle, the arm is not easy to shake.

In addition, it should be noted that, in some embodiments, in order to make the damping change rate of the first damping portion 301a and the second damping portion 301b different, a damping material (such as rubber, silicone, etc.) or , Other elastic limit materials are used to reduce the speed of the unfolding and folding process, and the damping of each part of the damping material is designed to achieve the required damping rate of change of the first damping part 301a and the second damping part 301b.

Example four

Fig. 10 is a structural schematic diagram 1 of an unmanned aerial vehicle provided by an embodiment of the present invention; Fig. 11 is a structural schematic diagram 2 of an unmanned aerial vehicle provided by an embodiment of the present invention; The human aircraft includes a fuselage 10a and an arm 20a. The fuselage 10a and the arm 20a are rotatably connected by a rotating connection assembly 30, wherein the rotating connection assembly 30 includes:

The first component 31 is fixedly connected to the body 10a. The second part 32 is connected to the first part 31 and fixedly connected to the arm 20a. Wherein, the first part 31 and the body 10a may be detachably connected, such as screw connection, snap connection, etc., or the first part 31 and the body 10a may be non-detachably connected, such as welding, riveting, Gluing, etc., or alternatively, the first component 31 and the body 10a may be integrally formed, for example, integral injection molding, etc., which is not specifically limited in this embodiment. Similarly, any of the detachable connection, non-detachable connection, and integral molding can also be adopted between the second component 32 and the arm 20a, which will not be repeated here.

The second component 32 and the first component 31 can be coaxially connected. Specifically, the second component 32 can be sleeved outside the first component 31 or inserted into the first component 31, or the two can be coaxially connected through a connecting shaft. Set up. Or, in some embodiments, the second part 32 is provided on the outside of the first part 31, and the second part 32 can rotate around the first part 31 with the first part 31 as the center. Of course, the present invention is not limited to this.

It should be noted that the second member 32 can rotate relative to the first member 31 to the first position A, the intermediate position O, and the second position B, so that the body 10a and the arm 20a can be switched between the folded state and the unfolded state. .

In this embodiment, as shown in FIG. 10, when the second part 32 is in the first position A relative to the first part 31, the body 10a and the arm 20a are in an unfolded state; the second part 32 is relative to the first part 31 When in the second position B, the body 10a and the arm 20a are in a folded state.

In the structure shown in FIG. 10, since the first part 31 is fixedly connected to the body 10a, and the second part 32 is fixedly connected to the arm 20a, the second part 32 rotates from the intermediate position O to the first part 31 relative to the first part 31. In the process of a position A, the arm 20a can rotate clockwise from the intermediate position O to the unfolded state. In addition, while the second member 32 is rotated from the intermediate position O to the second position B relative to the first member 31, the arm 20a can be rotated counterclockwise from the intermediate position O to the folded state.

Of course, it can be understood that in other embodiments, when the second part 32 is in the first position A relative to the first part 31, the body 10a and the arm 20a are in a folded state; the second part 32 is relative to When the first component 31 is in the second position B, the body 10a and the arm 20a are in an unfolded state. As long as it can be realized that during the rotation of the second member 32 relative to the first member 31, the driving arm 20a rotates relative to the body 10a to switch between the folded state and the unfolded state.

As shown in Figures 4 to 6, there is a damping assembly 301 between the first part 31 and the second part 32. The damping assembly 301 includes a first damping part 301a and a second damping part 301b. The first damping part 301a is used to hinder the first damping part 301a and the second damping part 301b. The two components 32 rotate from the intermediate position O to the first position A, and the second damping portion 301b is used to prevent the second component 32 from rotating from the intermediate position O to the second position B. The damping assembly 301 can effectively reduce the unfolding speed and the folding speed of the foldable device, which improves the operational safety to a certain extent.

In the unmanned aerial vehicle provided by the embodiment of the present invention, since the damping assembly is provided in the rotating connection assembly of the arm and the fuselage, the unfolding and folding speed can be effectively reduced, the problem of gripping hands can be solved to a certain extent, and the safety of use can be ensured, and, When switching between the folded state and the unfolded state, the corresponding damping change rate is different. Therefore, the unfolding speed and the folding speed can be different to meet individual requirements.

Example five

This embodiment is further described on the basis of the fourth embodiment. Specifically, in this embodiment, as shown in FIGS. 10 and 11, when the second component 32 is at the first position A relative to the first component 31 , The fuselage 10a and the arm 20a are in an unfolded state; when the second member 32 is in the second position B relative to the first member 31, and the fuselage 10a and the arm 20a are in a folded state, the first damping part can be reasonably designed 301a and the second damping portion 301b, so that the rate of change of the first rotation damping provided by the first damping portion 301a can be greater than the rate of change of the second rotation damping provided by the second damping portion 301a. In this way, fast deployment and slow folding of the foldable device can be realized, fast deployment can effectively ensure operation efficiency, and slow folding can effectively improve operation safety and prevent hands from being caught. It should be noted that, because the present invention adds a damping component, even if compared with the prior art, the deployment speed of the foldable device is lower than that in the prior art.

In other embodiments, when the second part 32 is at the first position A relative to the first part 31, the body 10a and the arm 20a are in a folded state; the second part 32 is at the second position B relative to the first part 31 When the fuselage 10a and the arm 20a are in the unfolded state, the first damping part 301a and the second damping part 301b can be reasonably designed so that the rate of change of the first rotation damping provided by the first damping part 301a can be less than The rate of change of the second rotational damping provided by the second damping portion 301a. It can also realize the fast unfolding and slow folding of the foldable device.

Of course, it should be understood that in some special application scenarios, it may be desirable that the unfolding speed of the foldable device is lower than the folding speed of the foldable device, that is, to achieve the effects of fast folding and slow unfolding. Those skilled in the art can specifically design the first damping portion 301a and the second damping portion 301b to achieve the desired purpose, which is not repeated in this embodiment.

Example Six

This embodiment provides a specific structure of the damping component 301 based on the fourth or fifth embodiment. As shown in FIGS. 4-6, the first damping part 301a and the second damping part 301b of the damping component 301 of this embodiment Located on the first component 31, the second component 32 includes a topping device 321 for abutting contact with the first damping portion 301a and the second damping portion 301b.

Further, the abutting device 321 may have elasticity; and/or, the first damping part 301a may have elasticity; and/or, the second damping part 301b may have elasticity.

The foldable device provided by the embodiment of the present invention may further include a rotating shaft 323, which passes through the first part 31 and the second part 32, and both ends of the rotating shaft 323 may be respectively provided for connecting the first part 31 and the second part 32 axially fixed axial limiter. At least one of the axial limiting members at both ends of the rotating shaft 323 can be detachably connected with the rotating shaft 323.

For the first part 31, in this embodiment, as shown in FIG. 5, the first part 31 may include a cam. The cam includes a first cam wall C1 and a second cam wall C2. The first cam wall C1 forms a first cam wall. The damping portion 301a and the second cam wall C2 form a second damping portion 301b.

In this embodiment, the first cam wall C1 may be a slope, and the second cam wall C2 may be a slope, and the slope of the first cam wall C1 is different from the slope of the second cam wall C2. In this embodiment, preferably, the slope of the first cam wall C1 is greater than the slope of the second cam wall C2.

In some other embodiments, the first cam wall C1 may be a curved surface, the second cam wall C2 is a curved surface, and the curvature of the first cam wall C1 is different from the curvature of the second cam wall C2. Wherein, the curvature of the first cam wall C1 is greater than the curvature of the second cam wall C2.

The shape of the one end of the abutting device 321 used to abut the cam can match the shape formed by the two cams. When the second part 32 is at the first position A relative to the first part 31, the abutting device 321 is The one end used for abutting against the cam is in engagement with the two cams.

The structures and functions of the components in the rotating connection assembly described in this embodiment are the same as those in the third embodiment. For details, please refer to the description of the third embodiment, which will not be repeated here. Differences between this embodiment and the third embodiment It is that the first body is specifically a fuselage, and the second body is specifically a machine arm.

Example Seven

FIG. 12 is a top view of a handheld pan/tilt provided by an embodiment of the present invention; FIG. 13 is a top view of another handheld pan/tilt provided by an embodiment of the present invention; FIG. 14 is a side view of a handheld pan/tilt provided by an embodiment of the present invention. As shown in Figures 12-14, this embodiment provides a handheld pan/tilt head, which includes a first shaft arm 10b and a second shaft arm 20b. The first shaft arm 10b and the second shaft arm 20b are rotatable through a rotating connection assembly 30. Ground connection, wherein the rotating connection assembly 30 includes:

The first component 31 is fixedly connected to the first shaft arm 10b. The second part 32 is connected to the first part 31 and fixedly connected to the second shaft arm 20b. Wherein, the first component 31 and the first shaft arm 10b can be detachably connected, such as screw connection, snap connection, etc., or the first component 31 and the first shaft arm 10b can be non-detachably connected, for example Welding, riveting, gluing, etc., or alternatively, the first component 31 and the first shaft arm 10b may be integrally formed, for example, integral injection molding, etc., which is not specifically limited in this embodiment. Similarly, any one of detachable connection, non-detachable connection, and integral molding can also be adopted between the second component 32 and the second shaft arm 20b, which will not be repeated here.

As shown in Figures 12-14, the second member 32 can rotate relative to the first member 31 to a first position A, an intermediate position O, and a second position B, so that the first shaft arm 10b and the second shaft arm 20b are Switch between the collapsed state and the expanded state.

In this embodiment, as shown in FIG. 12, when the second member 32 is in the first position A relative to the first member 31, the first shaft arm 10b and the second shaft arm 20b are in an unfolded state; the second member 32 is opposite to When the first member 31 is in the second position B, the first shaft arm 10b and the second shaft arm 20b are in a folded state.

In the structure shown in FIG. 12, since the first member 31 is fixedly connected to the first shaft arm 10b, the second member 32 is fixedly connected to the second shaft arm 20b, and the second member 32 is in the middle position relative to the first member 31. During the rotation of O to the first position A, the second shaft arm 20b can rotate clockwise from the intermediate position O to the unfolded state. In addition, when the second member 32 rotates from the intermediate position O to the second position B relative to the first member 31, the second shaft arm 20b can rotate counterclockwise from the intermediate position O to the folded state.

Of course, it can be understood that in other embodiments, such as shown in FIG. 13, it may also be that when the second member 32 is in the first position A relative to the first member 31, the first shaft arm 10b and the second shaft arm 20b In a folded state; when the second member 32 is in the second position B relative to the first member 31, the first shaft arm 10b and the second shaft arm 20b are in an unfolded state. As long as it can be realized that during the rotation of the second component 32 relative to the first component 31, the second shaft arm 20b is driven to rotate relative to the first shaft arm 10b to switch between the folded state and the unfolded state.

In the hand-held pan/tilt provided by the embodiment of the present invention, since the damping assembly is provided in the rotating connection assembly of the first axis arm and the second axis arm, the unfolding and folding speed can be effectively reduced, the problem of gripping hands can be solved to a certain extent, and the use can be guaranteed. It is safe, and when switching between the folded state and the unfolded state, the corresponding damping change rate is different. Therefore, the unfolding speed and the folding speed can be different to meet individual needs.

Example eight

This embodiment is further described on the basis of the seventh embodiment. Specifically, in this embodiment, as shown in FIG. 12, when the second component 32 is at the first position A relative to the first component 31, the first The shaft arm 10b and the second shaft arm 20b are in an unfolded state; when the second member 32 is in the second position B relative to the first member 31, and the first shaft arm 10b and the second shaft arm 20b are in a folded state, it can be reasonable The first damping portion 301a and the second damping portion 301b are designed so that the rate of change of the first rotational damping provided by the first damping portion 301a can be greater than the rate of change of the second rotational damping provided by the second damping portion 301a. In this way, fast deployment and slow folding of the foldable device can be realized. Fast deployment can effectively ensure operation efficiency, and slow folding can effectively improve operation safety and prevent hands from being caught. It should be noted that, because the present invention adds a damping component, even if compared with the prior art, the deployment speed of the foldable device is lower than that in the prior art.

In other embodiments, when the second part 32 is in the first position A relative to the first part 31, the first shaft arm 10b and the second shaft arm 20b are in a folded state; the second part 32 is in a folded state relative to the first part 31 In the second position B, when the first shaft arm 10b and the second shaft arm 20b are in the unfolded state, the first damping part 301a and the second damping part 301b can be rationally designed so that the first damping part 301a provides the first damping

part

301a and 301b. The rate of change of a rotational damping may be less than the rate of change of the second rotational damping provided by the second damping portion 301a. It can also realize the fast unfolding and slow folding of the foldable device.

Example 9

This embodiment provides a specific structure of the damping component 301 based on the seventh or eighth embodiment. As shown in FIGS. 4-6, the first damping part 301a and the second damping part 301b of the damping component 301 of this embodiment Located on the first component 31, the second component 32 includes a topping device 321 for abutting contact with the first damping portion 301a and the second damping portion 301b.

In this embodiment, preferably, the abutting device 321 has elasticity. The abutting device 321 includes an elastic member 3211 and a abutting member 3212. The elastic member 3211 is abutting against the abutting member 3212, and the abutting member 3212 is used for contacting the first The damping portion 301a and the second damping portion 301b are in abutting contact.

The foldable device provided by the embodiment of the present invention may further include a rotating shaft 323, which passes through the first part 31 and the second part 32, and both ends of the rotating shaft 323 may be respectively provided for connecting the first part 31 and the second part 32 axially fixed axial limiter. At least one of the axial limiting members at both ends of the rotating shaft 323 can be detachably connected to the rotating shaft 323.

In this embodiment, the first cam wall C1 may be a slope, the second cam wall C2 may be a slope, and the slope of the first cam wall C1 is different from the slope of the second cam wall C2. In this embodiment, preferably, the slope of the first cam wall C1 is greater than the slope of the second cam wall C2.

The shape of one end of the abutting device 321 used to abut the cam can match the shape formed by the two cams. When the second part 32 is at the first position A relative to the first part 31, the abutting device 321 is The one end used for abutting against the cam is in engagement with the two cams.

The structure and function of the components in the rotating connection assembly described in this embodiment are the same as those in the third embodiment. For details, please refer to the description of the third embodiment, which will not be repeated here. Differences between this embodiment and the third embodiment That is, the first body is specifically a first shaft arm, and the second body is specifically a second shaft arm.

Example ten

As shown in FIGS. 4 to 6, an embodiment of the present invention also provides a rotating connection assembly 30, which includes: a first part 31 and a second part 32. Among them, the second component 32 is connected to the first component 31; specifically, the first component 31 and the second component 32 can be coaxially connected, for example, the second component 32 can be sleeved outside the first component 31 or inserted into the first component 31. In one part 31, or both are coaxially sleeved through a connecting shaft. Or, in some embodiments, the second component 32 is provided outside the first component 31, and the second component 32 can rotate around the first component 31 with the first component 31 as a center. Of course, the present invention is not limited to this.

It should be noted that the second member 32 can rotate to the first position A, the intermediate position O, and the second position B relative to the first member 31. The first part 31 can be used to be fixedly connected to the first body, and the second part 32 is used to be fixedly connected to the second body, so that the first body and the second body can be relatively rotated to the folded state and the unfolded state. When the second part 32 rotates relative to the first part 31, the first body 10 and the second body 20 can be driven to switch between the folded state and the unfolded state.

In use, the first component 31 can be connected to the first body 10, and the second component 32 can be connected to the second body 20. As shown in FIG. 10, when the second component 32 is in the first position A relative to the first component 31 , The first body 10 and the second body 20 are in an unfolded state; when the second member 32 is at the second position B relative to the first member 31, the first body 10 and the second body 20 are in a folded state.

In the structure shown in FIG. 10, since the first part 31 is fixedly connected to the first body 10, and the second part 32 is fixedly connected to the second body 20, the second part 32 rotates from the intermediate position O relative to the first part 31 In the process of reaching the first position A, the second body 20 can rotate clockwise from the intermediate position O to the unfolded state. In addition, during the process in which the second member 32 is rotated from the intermediate position O to the second position B relative to the first member 31, the second body 20 can be rotated counterclockwise from the intermediate position O to the folded state.

Of course, it can be understood that in other embodiments, when the second part 32 is in the first position A relative to the first part 31, the first body 10 and the second body 20 are in a folded state; the second part 32 When in the second position B relative to the first component 31, the first body 10 and the second body 20 are in an unfolded state. As long as it can be realized that during the rotation of the second component 32 relative to the first component 31, the second body 20 is driven to rotate relative to the first body 10 to switch between the folded state and the unfolded state.

In this embodiment, the rate of change of the first rotational damping provided by the first damping portion 301a and the second rotational damping provided by the second damping portion 301b are different. Therefore, the unfolding speed and the folding speed of the foldable device connected with the rotating connection assembly can be made different, so as to meet individual requirements. It should be noted that the change of the first rotation damping may be that the damping changes from large to small, or from small to large, which is not limited in this embodiment.

In the rotary connection assembly provided by the embodiment of the present invention, due to the damping assembly, when in use, the rotary connection assembly is connected with the foldable device composed of the first body and the second body, which can effectively reduce the unfolding and folding speed of the foldable device. To a certain extent, solve the problem of gripping hands and ensure safe use. Moreover, when switching between the folded state and the unfolded state, the corresponding damping change rate is different. Therefore, the unfolding speed and the folding speed can be different to meet individual needs. .

Example 11

This embodiment is further explained on the basis of the tenth embodiment. Specifically, in this embodiment, as shown in FIGS. 10 and 11, when the second component 32 is at the first position A relative to the first component 31 , The first body 10 and the second body 20 are in an unfolded state; when the second member 32 is in the second position B relative to the first member 31, the first body 10 and the second body 20 are in a folded state, the design can be reasonably The first damping portion 301a and the second damping portion 301b, such that the rate of change of the first rotational damping provided by the first damping portion 301a can be greater than the rate of change of the second rotational damping provided by the second damping portion 301a. In this way, fast deployment and slow folding of the foldable device can be realized, fast deployment can effectively ensure operation efficiency, and slow folding can effectively improve operation safety and prevent hands from being caught. It should be noted that, because the present invention adds a damping component, even if compared with the prior art, the deployment speed of the foldable device is lower than that in the prior art.

Example 12

This embodiment provides a specific structure of the damping assembly 301 based on the ninth or tenth embodiment. As shown in FIGS. 4-6, the first damping part 301a and the second damping part 301b of the damping assembly 301 of this embodiment Located on the first component 31, the second component 32 includes a topping device 321 for abutting contact with the first damping portion 301a and the second damping portion 301b.

The rotating connection assembly provided by the embodiment of the present invention may further include a rotating shaft 323, which passes through the first part 31 and the second part 32, and both ends of the rotating shaft 323 may be respectively provided for connecting the first part 31 and the second part 32 axially fixed axial limiter. At least one of the axial limiting members at both ends of the rotating shaft 323 can be detachably connected to the rotating shaft 323.

The structures and functions of the components in the rotating connection assembly described in this embodiment are the same as those in the third embodiment. For details, reference may be made to the description of the third embodiment, which will not be repeated here.

In the several embodiments provided by the present invention, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical or mechanical. Or other forms.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of the present invention. range.

Claims

A foldable device, characterized in that it comprises a first body and a second body, the first body and the second body are rotatably connected by a rotating connection assembly, wherein the rotating connection assembly includes:

The first component is fixedly connected to the first body;

The second part is connected to the first part and fixedly connected to the second body; the second part can be rotated relative to the first part to a first position, an intermediate position, and a second position, so that The first body and the second body are switched between a folded state and an unfolded state;

A damping assembly is provided between the first part and the second part, the damping assembly includes a first damping part and a second damping part, and the first damping part is used to prevent the second part from rotating from the intermediate position To the first position, the second damping part is used to prevent the second component from rotating from the intermediate position to the second position;

The rate of change of the first rotational damping provided by the first damping portion is different from the rate of change of the second rotational damping provided by the second damping portion.
The foldable device according to claim 1, wherein when the second part is in the first position relative to the first part, the first body and the second body are in an unfolded state;

When the second part is in the second position relative to the first part, the first body and the second body are in a folded state.
The foldable device according to claim 2, wherein the rate of change of the first rotational damping provided by the first damping part is greater than the rate of change of the second rotational damping provided by the second damping part.
The foldable device according to claim 1, wherein the first damping part and the second damping part are located on the first part, and the second part includes a device for interacting with the first damping part. An abutting device for abutting contact with the second damping part;

The abutting device abuts the first damping part to generate the first rotation damping, and the abutting device abuts the second damping part to generate the second rotation damping.
The foldable device according to claim 4, wherein the abutting device has elasticity; and/or, the first damping part has elasticity; and/or, the second damping part has elasticity.
The foldable device according to claim 5, wherein the abutting device has elasticity, and the abutting device includes an elastic member and a abutting member, and the elastic member and the abutting member are pressed against each other. The abutting member is used for abutting contact with the first damping part and the second damping part.
The foldable device according to claim 6, wherein the second component further comprises a sleeve, the top abutment device is accommodated in the sleeve, and the top abutment device is circumferentially connected to the sleeve. It is fixed, and the abutting device can axially expand and contract in the sleeve.
The foldable device according to claim 7, further comprising a rotating shaft, the rotating shaft passing through the first part and the second part, and both ends of the rotating shaft are respectively provided for The first part and the second part are axially fixed axial limiter.
8. The foldable device according to claim 8, wherein at least one of the axial stoppers at both ends of the rotating shaft is detachably connected to the rotating shaft.
The foldable device according to any one of claims 4-9, wherein the first part comprises a cam, the cam comprises a first cam wall and a second cam wall, and the first cam wall forms a The first damping part, the second cam wall forms the second damping part.
The foldable device according to claim 10, wherein the first cam wall is a slope, the second cam wall is a slope, and the slope of the first cam wall is the same as the slope of the second cam wall different.
The foldable device according to claim 10, wherein the first cam wall is a curved surface, the second cam wall is a curved surface, and the curvature of the first cam wall is equal to the curvature of the second cam wall. different.
The foldable device according to claim 10, wherein when the second part is rotated from the intermediate position to the first position, the abutting device slides from the top of the cam to the first position. The bottom of the first cam wall;

During the rotation of the second component from the intermediate position to the second position, the abutting device slides from the top of the cam to the bottom of the second cam wall.
The foldable device according to claim 11, wherein the slope of the first cam wall is greater than the slope of the second cam wall.
The foldable device according to claim 12, wherein the curvature of the first cam wall is greater than the curvature of the second cam wall.
The foldable device according to claim 10, wherein the first part comprises two cams, and the two cams are arranged symmetrically about the axis of the first part.
The foldable device according to claim 16, wherein the shape of the end of the abutting device for abutting the cam matches the shape formed by the two cams, and when the first When the two parts are in the first position relative to the first part, the end of the abutting device for abutting against the cam is in an engagement state with the two cams.
An unmanned aerial vehicle, characterized by comprising an arm and a fuselage, the arm and the fuselage are rotatably connected by a rotating connection assembly, wherein the rotating connection assembly includes:

The first component is fixedly connected to the fuselage;

The second part is connected to the first part and fixedly connected to the arm; the second part can be rotated relative to the first part to a first position, an intermediate position, and a second position, so that all The arm and the fuselage are switched between a folded state and an unfolded state;

A damping assembly is provided between the first part and the second part, the damping assembly includes a first damping part and a second damping part, and the first damping part is used to prevent the second part from rotating from the intermediate position To the first position, the second damping part is used to prevent the second component from rotating from the intermediate position to the second position;

The rate of change of the first rotational damping provided by the first damping portion and the second rotational damping provided by the second damping portion are different.
The unmanned aerial vehicle according to claim 18, wherein when the second part is in the first position relative to the first part, the arm and the fuselage are in an unfolded state;

When the second part is in the second position relative to the first part, the arm and the body are in a folded state.
The UAV according to claim 19, wherein the rate of change of the first rotational damping provided by the first damping portion is greater than the rate of change of the second rotational damping provided by the second damping portion.
The unmanned aerial vehicle according to claim 18, wherein the first damping part and the second damping part are located on the first part, and the second part includes a device for interacting with the first damping part. An abutting device for abutting contact with the second damping part;

The abutting device abuts against the first damping part to generate the first rotational damping, and the abutting device abuts against the second damping part to generate the second rotational damping.
The unmanned aerial vehicle according to claim 21, wherein the abutting device has elasticity; and/or, the first damping portion has elasticity; and/or, the second damping portion has elasticity.
The unmanned aerial vehicle according to claim 22, wherein the abutting device has elasticity, the abutting device comprises an elastic member and a abutting member, and the elastic member and the abutting member are pressed against each other. The abutting member is used for abutting contact with the first damping part and the second damping part.
The unmanned aerial vehicle according to claim 23, wherein the second component further comprises a sleeve, the abutting device is accommodated in the sleeve, and the abutting device is circumferentially connected to the sleeve. It is fixed, and the abutting device can axially expand and contract in the sleeve.
The unmanned aerial vehicle according to claim 24, further comprising a rotating shaft that passes through the first part and the second part, and both ends of the rotating shaft are respectively provided for The first part and the second part are axially fixed axial limiter.
The unmanned aerial vehicle according to claim 25, wherein at least one of the axial stoppers at both ends of the rotating shaft is detachably connected to the rotating shaft.
The unmanned aerial vehicle according to any one of claims 21-26, wherein the first component includes a cam, the cam includes a first cam wall and a second cam wall, and the first cam wall forms a The first damping part, the second cam wall forms the second damping part.
The unmanned aerial vehicle according to claim 27, wherein the first cam wall is a slope, the second cam wall is a slope, and the slope of the first cam wall is the same as the slope of the second cam wall different.
The unmanned aerial vehicle according to claim 27, wherein the first cam wall is a curved surface, the second cam wall is a curved surface, and the curvature of the first cam wall is equal to the curvature of the second cam wall. different.
The unmanned aerial vehicle according to claim 27, wherein when the second part rotates from the intermediate position to the first position, the abutting device slides from the top of the cam to the first position. The bottom of the first cam wall;

During the rotation of the second component from the intermediate position to the second position, the abutting device slides from the top of the cam to the bottom of the second cam wall.
The UAV of claim 28, wherein the slope of the first cam wall is greater than the slope of the second cam wall.
The UAV of claim 29, wherein the curvature of the first cam wall is greater than the curvature of the second cam wall.
The unmanned aerial vehicle according to claim 27, wherein the first component comprises two cams, and the two cams are arranged symmetrically centered on the axis of the first component.
The unmanned aerial vehicle according to claim 33, wherein the shape of the end of the abutting device for abutting the cam matches the shape formed by the two cams, and when the first When the two parts are in the first position relative to the first part, the end of the abutting device for abutting against the cam is in an engagement state with the two cams.
A hand-held pan/tilt head, characterized by comprising a first shaft arm and a second shaft arm, the first shaft arm and the second shaft arm are rotatably connected by a rotating connection assembly; wherein, the rotating connection assembly include:

The first component is fixedly connected to the first shaft arm;

The second part is connected to the first part and fixedly connected to the second shaft arm; the second part can be rotated relative to the first part to a first position, an intermediate position and a second position to Switching the first shaft arm and the second shaft arm between a folded state and an unfolded state;

A damping assembly is provided between the first part and the second part, the damping assembly includes a first damping part and a second damping part, and the first damping part is used to prevent the second part from rotating from the intermediate position To the first position, the second damping part is used to prevent the second component from rotating from the intermediate position to the second position;

The rate of change of the first rotational damping provided by the first damping portion is different from the rate of change of the second rotational damping provided by the second damping portion.
The handheld pan/tilt according to claim 35, wherein when the second part is in the first position relative to the first part, the first shaft arm and the second shaft arm are unfolded status;

When the second component is in the second position relative to the first component, the first shaft arm and the second shaft arm are in a folded state.
The handheld pan/tilt head according to claim 36, wherein the rate of change of the first rotational damping provided by the first damping part is greater than the rate of change of the second rotational damping provided by the second damping part.
The hand-held pan/tilt head according to claim 35, wherein the first damping part and the second damping part are located on the first part, and the second part includes a device for interacting with the first damping part. An abutting device for abutting contact with the second damping part;

The abutting device abuts against the first damping part to generate the first rotational damping, and the abutting device abuts against the second damping part to generate the second rotational damping.
The hand-held pan/tilt head according to claim 38, wherein the abutting device has elasticity; and/or, the first damping part has elasticity; and/or, the second damping part has elasticity.
The hand-held pan/tilt head according to claim 39, wherein the abutting device has elasticity; the abutting device comprises an elastic member and a abutting member, the elastic member and the abutting member are pressed against each other, so The abutting member is used for abutting contact with the first damping part and the second damping part.
The hand-held pan/tilt according to claim 40, wherein the second component further comprises a sleeve, the abutting device is accommodated in the sleeve, and the abutting device is circumferentially connected to the sleeve. It is fixed, and the abutting device can axially expand and contract in the sleeve.
The hand-held pan/tilt head according to claim 41, further comprising a rotating shaft, the rotating shaft passing through the first part and the second part, and both ends of the rotating shaft are respectively provided for The first part and the second part are axially fixed axial limiter.
The hand-held pan/tilt according to claim 42, wherein at least one of the axial limiters at both ends of the rotating shaft is detachably connected to the rotating shaft.
The handheld pan/tilt according to any one of claims 38-43, wherein the first part comprises a cam, the cam comprises a first cam wall and a second cam wall, and the first cam wall forms a The first damping part, the second cam wall forms the second damping part.
The handheld pan/tilt according to claim 44, wherein the first cam wall is an inclined surface, the second cam wall is an inclined surface, and the slope of the first cam wall is the same as the slope of the second cam wall different.
The handheld pan/tilt head according to claim 44, wherein the first cam wall is a curved surface, the second cam wall is a curved surface, and the curvature of the first cam wall is equal to the curvature of the second cam wall. different.
The hand-held pan/tilt according to claim 44, wherein when the second part is rotated from the intermediate position to the first position, the abutting device slides from the top of the cam to the first position. The bottom of the first cam wall;

During the rotation of the second component from the intermediate position to the second position, the abutting device slides from the top of the cam to the bottom of the second cam wall.
The handheld pan/tilt head according to claim 45, wherein the slope of the first cam wall is greater than the slope of the second cam wall.
The handheld pan/tilt head according to claim 46, wherein the curvature of the first cam wall is greater than the curvature of the second cam wall.
The handheld pan/tilt according to claim 44, wherein the first part comprises two cams, and the two cams are arranged symmetrically about the axis of the first part.
The hand-held pan/tilt according to claim 50, wherein the shape of the end of the pressing device for pressing against the cam matches the shape formed by the two cams, and when the first When the two parts are in the first position relative to the first part, the end of the abutting device for abutting against the cam is in an engagement state with the two cams.