CN210000553U

CN210000553U - Connection structure, frame and aircraft

Info

Publication number: CN210000553U
Application number: CN201920814780.1U
Authority: CN
Inventors: 蒋李; 吴利鑫; 陈志强
Original assignee: Shenzhen Dajiang Innovations Technology Co Ltd
Current assignee: Shenzhen Dajiang Innovations Technology Co Ltd; SZ DJI Innovations Technology Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-01-31
Anticipated expiration: 2029-05-31

Abstract

The utility model provides an connection structure, frame and aircraft, connection structure includes the elastomer, be arranged in being connected with person in horn and the fuselage, the pivot subassembly links to each other with the elastomer, and be arranged in being connected with another person in horn and the fuselage, make the horn have stroke intervals for the rotation of fuselage at least, wherein, the stroke interval has position, the second position and is located the third position between position and the second position, the pivot subassembly still is used for leaning on and compress the elastomer in the process that the horn is close to the third position, the elastomer still is used for making the horn autogiration to position or second position when the horn surpasss the third position.

Description

Connection structure, frame and aircraft

Technical Field

The utility model relates to an aircraft damping connects technical field particularly, relates to connection structure, kind of frame and kinds of aircraft.

Background

For aircrafts such as unmanned planes, the power system is the main source of fuselage vibration, and the vibration of the fuselage causes many problems, such as the over-range, aliasing, structural fatigue and the like of the IMU.

Among the prior art, reduce the vibration influence of fuselage through addding damping system between fuselage and horn, however, under a lot of circumstances, aircrafts such as unmanned aerial vehicle have the volume requirement, addding damping system can increase the complete machine volume undoubtedly, and both need realize rotating the function and need realize self-locking function between current fuselage and the horn, this setting degree of difficulty that leads to damping system increases, and the damping effect is also not good.

SUMMERY OF THE UTILITY MODEL

To solve at least of the above-mentioned technical problem, of the present invention are directed to provide kinds of connection structures.

The utility model discloses an in addition aim at provide kinds of frames that have above-mentioned connection structure.

The utility model discloses a items aim at provide kinds of aircraft that have above-mentioned frame again.

To achieve the above object, an embodiment of the present invention according to the provides connection structures for a rotating connection of a horn to a fuselage such that the horn is rotatable relative to the fuselage and is maintained in a predetermined position relative to the fuselage, the connection structures including an elastomer for connecting to of the horn and the fuselage, a pivot assembly connected to the elastomer and for connecting to the other of the horn and the fuselage such that rotation of the horn relative to the fuselage has at least travel ranges, and the elastomer and the pivot assembly are adapted to separate the of the horn and the fuselage from the pivot assembly, wherein the travel ranges have a position, a second position, and a third position between the position and the second position, the pivot assembly further being adapted to abut against and compress the elastomer during approach of the horn to the third position, the elastomer further being adapted to cause the horn to rotate to the second position or to the position automatically when the horn exceeds the third position.

Compared with the prior art, the method has the following beneficial technical effects:

the utility model provides a connection structure utilizes the elastomer to be connected with person in horn and the fuselage, and the pivot subassembly is connected with person in addition in horn and the fuselage to the pivot subassembly is connected in the elastomer, has realized fuselage and horn assembly, and has the function of following tripartite between messenger's horn and the fuselage:

, the rotating shaft component is used to make the machine body and the machine arm rotate relatively, which satisfies the rotation demand of the machine arm relative to the machine body and realizes the function that the machine arm can rotate relative to the machine body to fold or unfold;

secondly, the elastic body can efficiently absorb vibration energy by utilizing the vibration absorption and buffering performance of the elastic body, and the elastic body is connected with persons in the horn and the fuselage, so that the elastic body plays a good vibration interception role between persons in the horn and the fuselage and the rotating shaft assembly, thereby reducing the vibration energy transmitted to the fuselage, greatly reducing the vibration influence of a power system on the horn and the horn on the fuselage, improving the vibration attenuation effect on the fuselage, and improving the performance of the aircraft;

and thirdly, in the process that the elastic body and the rotating shaft assembly rotate relative to the machine body, the elastic body is compressed by enabling the rotating shaft assembly to be close to the third position in the stroke interval so as to enable the elastic body to store energy, and after the machine arm exceeds the third position, the elastic body releases elastic potential energy so as to drive the machine arm to reset to the th position or the second position in the stroke interval, so that the self-locking function between the machine arm and the machine body is realized.

Generally, the utility model provides a connection structure, its elastomer can inhale the shake, with the vibration energy that prevents the horn between horn and fuselage transmits to the fuselage, solve the fuselage vibration problem, and compare in prior art additionally add damping system and carry out the scheme of damping, elastomer in this design can cooperate with pivot subassembly and respond with the ability of letting go through compression with energy storage and elastic recovery at horn pivoted in-process, thereby fuse well auto-lock and rotation process between horn and fuselage, thus, aspects, connection structure collection damping has been realized, it rotates, the integrated design of auto-lock function in body, this has avoided establishing alone among the prior art damping system existence and rotate, auto-lock process compatibility is poor so that damping system sets up the degree of difficulty big, damping effect is not good scheduling problem, simultaneously, this has also realized the retrench of product spare part, more do benefit to the miniaturized design of aircraft, also more do benefit to push in the tradition field and be suitable for, in addition aspects, be different from the spring energy storage and put the subassembly of ability, this application is the elastomer that the pivot is the energy storage volume of taking place and the volume of putting is reduced in the volume of energy storage, thereby the volume of saving is more benefit to the product, thereby the volume of saving is reduced in the product, thereby it is more greatly to be favorable to be convenient for the product, thereby, the volume of the product design, thereby, the volume of saving is reduced.

In addition, the utility model provides a connection structure in above-mentioned embodiment can also have following additional technical characteristics:

in the above technical solution, the rotating shaft assembly includes a rotating shaft connected to the elastic body, and a rotating member disposed on the rotating shaft and capable of rotating around the rotating shaft, for connecting to the other of the horn and the body, and being in transmission fit with the elastic body, wherein in a process that the rotating member rotates to make the horn approach to the third position, the elastic body is compressed, and when the rotating member rotates to make the horn go beyond the third position, the elastic body is released, and an elastic restoring force generated by the elastic body makes the rotating member drive the horn to rotate to the position or the second position.

In any above, the elastic body is provided with an elastic body shaft hole, and the part of the rotating shaft is sleeved in the elastic body shaft hole, wherein the axial length of the rotating shaft in the elastic body shaft hole accounts for greater than or equal to 1/4 of the total axial length of the rotating shaft, and/or the rotating shaft and the elastic body shaft hole are in transition fit or interference fit.

In any above, the shaft is provided with a stop portion and a second stop portion, the stop portion and the second stop portion are axially distributed at intervals along the shaft, and a portion of the shaft located between the stop portion and the second stop portion is connected to the elastic body and the rotating member, so that the elastic body and the rotating member are axially limited between the stop portion and the second stop portion.

In any embodiment, 0 of the stopping portion and the second stopping portion is a stopping structure in which a 1 body is configured on the rotating shaft, and another is a fixing piece assembled and connected with the rotating shaft, and/or the stopping portion is located at an axial end of the rotating shaft, and the stopping portion has a stopping end surface which is arranged along an outer circumferential ring of the rotating shaft and abuts against the elastic body, and/or a boss is configured at a position of the elastic body corresponding to the stopping portion, and the boss of the elastic body abuts against the stopping portion.

In any of the above, the rotor is configured to have a non-circular cross-section taken along a plane perpendicular to a center line of the shaft, and to be inserted into a connecting hole of the other of the arm and the body, wherein the outer contour line is adapted to a shape of an inner circumferential contour of the connecting hole.

In any above technical solution, the outer contour line includes an unclosed arc line segment and a connection line segment, and the arc line segment and the connection line segment are connected in a staggered manner, wherein the connection line segment is a straight line segment, a broken line segment or an arc line segment with a curvature different from that of the arc line segment.

In any , the pivot assembly further includes a movable element connected to the elastic element, a cam transmission fit is formed between the movable element and the rotating element, and the rotating element can rotate relative to the movable element to compress or release the elastic element from the movable element, wherein when a contact point between the rotating element and the movable element reaches a highest point of the cam, the elastic element is compressed, and when the contact point between the rotating element and the movable element avoids the highest point of the cam, the elastic element is released, and an elastic restoring force generated by the elastic element drives the rotating element to rotate, so that the arm automatically rotates to the position or the second position.

In any above, the elastic element is located on the side of the movable element along the axial direction of the rotating shaft, the rotating element is located on the other side of the movable element along the axial direction of the rotating shaft, the surface of the movable element corresponding to the rotating element is configured with a th cam structure, the surface of the rotating element corresponding to the movable element is configured with a second cam structure, and the th cam structure and the second cam structure form a cam transmission fit.

In any , one of the cam structure and the second cam structure includes a slider, the other includes a plurality of grooves, two opposite side wall surfaces of the grooves are configured as inclined surfaces or arc surfaces and make openings of the grooves gradually increase, adjacent side wall surfaces of adjacent grooves are connected with each other and define a peak structure, peaks of the peak structures form the highest points of the cams, and the rotating member rotates relative to the moving member to make the slider slide along the side wall surfaces of the grooves.

In any above, the rotating member has a rotating shaft hole, the rotating shaft is connected to the rotating shaft hole in a penetrating manner, so that the rotating member can rotate around the rotating shaft, the moving member has a moving member shaft hole, the rotating shaft is connected to the moving member shaft hole in a penetrating manner, and the moving member moves along the axial direction of the rotating shaft to compress or release the elastic body.

In any , a second boss is formed at a position of the elastic body corresponding to the movable member, and the second boss of the elastic body abuts against the movable member.

In any above, the movable member is bonded to the elastic body, or of the movable member and the elastic body is provided with a protrusion, and another is provided with a recess, and the protrusion is inserted into the recess to fix the movable member and the elastic body.

In any , the elastic body is configured with a plurality of connecting parts for connecting with the horn and the in the fuselage, wherein at least two of the connecting parts are axisymmetrically distributed, and/or an included angle is formed by at least two of the connecting parts in the connecting parts with the center line of the rotating shaft assembly as a vertex.

In any of the above, the connecting portion includes a lug located at an edge of the elastic body, and the lug is provided with a mounting hole for being assembled with a fastener to be fixed to the of the horn and the body.

In any above, the horn is configured to be in an extended state with respect to the body when the horn is rotated to the th position with respect to the body, and configured to be in a folded state with respect to the body when the horn is rotated to the second position with respect to the body.

Optionally, the elastomer is a rubber body or a super elastomer.

Optionally, the rotating shaft is a steel component.

An embodiment of the second aspect of the present invention provides kinds of racks, including the connecting structure described in any of the above-mentioned solutions, a horn connected to the elastic body of the connecting structure and of the rotating shaft assembly, and a body connected to the elastic body and the other of the rotating shaft assembly.

The utility model discloses the frame that above-mentioned embodiment provided, through being provided with above-mentioned connecting structure who anys technical scheme to have above all beneficial effect, no longer describe herein.

An embodiment of the third aspect of the present invention provides kinds of aircrafts, including any of the above-mentioned technical solutions, the frame and the power system, the power system is provided on the horn in the frame, for providing the aircraft with flight power.

The utility model discloses the aircraft that above-mentioned embodiment provided is through being provided with the aforesaid frame in technical scheme wantonly to have above all beneficial effect, no longer give consideration to here.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic front view of exemplary embodiments of the connection structure of the present invention;

FIG. 2 is a schematic bottom view of the connection shown in FIG. 1;

FIG. 3 is a schematic view of the cross-sectional structure B-B in FIG. 2;

FIG. 4 is a perspective view of the connection shown in FIG. 1;

FIG. 5 is an exploded view of the connection shown in FIG. 1;

fig. 6 is a schematic view of an assembly structure of the connecting structure and the horn according to embodiments of the present invention;

FIG. 7 is a schematic view of the assembled structure shown in FIG. 6 from another view point ;

FIG. 8 is a bottom view of the assembled structure shown in FIG. 6;

FIG. 9 is a schematic view of the cross-sectional structure C-C of FIG. 8;

FIG. 10 is an exploded view of the assembled structure shown in FIG. 6;

fig. 11 is a schematic view of an assembly structure of the connecting structure and the fuselage according to embodiments of the present invention;

fig. 12 is a schematic view of an assembly structure of the connecting structure and the fuselage according to embodiments of the present invention;

fig. 13a is a graph of frequency versus acceleration amplitude for the fuselage in exemplary embodiments of the present invention;

FIG. 13b is a graph of frequency versus acceleration amplitude for a fuselage in a prior art airframe;

fig. 14a is a graph of frequency versus acceleration amplitude for an arm according to exemplary embodiments of the present invention;

figure 14b is a graph of frequency versus acceleration amplitude for a horn in a prior art gantry.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 12 is:

10 connecting structure, 100 elastic bodies, 110 elastic body shaft hole, 121 st boss, 122 second boss, 123 connecting part, 1231 lug, 1232 mounting hole, 124 recess, 200 rotating shaft assembly, 210 rotating shaft, 211 st stop, 2111 stop structure, 2112 stop end surface, 212 second stop, 2121 fixed part, 220 rotating part, 221 outer contour line, 221a arc line segment, 221b connecting line segment, 222 rotating part shaft hole, 223 second cam structure, 230 moving part, 231 th cam structure, 2311 hump structure, 232 moving part shaft hole, 233 bulge, 20 machine arm, 21 connecting hole, 22a end, 22b second end, 30 machine body, 31 avoiding hole, 32 positioning part, 33 fixing hole and 40 fastener.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings, which are not intended to limit the scope of the invention, but which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The following describes a connection structure, a frame and an aircraft according to embodiments of the present invention with reference to fig. 1 to 12.

As shown in fig. 1 to 5, the embodiment of the present invention according to the provides a connection structure 10 for the rotation connection of the horn 20 and the body 30, so that the horn 20 can rotate relative to the body 30 and maintain a predetermined position relative to the body 30.

It is to be understood that the horn 20 and the body 30 are adapted to be rotatable relative to the body 30 between a folded position and an unfolded position to respectively enable the horn 20 to be folded or unfolded relative to the body 30. the aforementioned predetermined position of the horn 20 relative to the body 30 may be specifically the folded position, the unfolded position, and even any intermediate position among or more intermediate positions between the folded position and the unfolded position.

As shown in fig. 1, the connecting structure 10 includes an elastic body 100 and a rotary shaft assembly 200.

As for the elastic body 100, it is understood by those skilled in the art that the elastic body 100 may be understood as a material that can be restored to its original shape after an external force is removed, or a polymer material that can be deformed significantly under stress and can be restored to its original state and size rapidly after the stress is relaxed.

The elastic body 100 is used for being connected with of the horn 20 and the fuselage 30, the rotating shaft assembly 200 is connected with the elastic body 100 and is used for being connected with the other of the horn 20 and the fuselage 30, so that the rotating motion of the horn 20 relative to the fuselage 30 has at least travel intervals, wherein the travel intervals have a th position, a second position and a third position between the th position and the second position, the rotating shaft assembly 200 is also used for abutting and compressing the elastic body 100 in the process that the horn 20 approaches the third position, and the elastic body 100 is also used for enabling the horn 20 to automatically rotate to the th position or the second position when the horn 20 exceeds the third position.

For example, take any stroke interval as an example to explain:

during the process that the horn 20 approaches the third position from the th position (i.e. during the process that the horn 20 moves from the th position to the third position) under the action of the external force, the rotating shaft assembly 200 can act against the elastic body 100, so that the elastic body 100 is compressed to store energy.

When the external force acting on the horn 20 is removed, for a case where the horn 20 does not exceed the third position but is between the th position and the third position when the external force is removed, the elastic body 100 releases elastic potential energy and drives the horn 20 such that the horn 20 rotates to the th position.

When the horn 20 exceeds the third position, the elastic body 100 releases the elastic potential energy and drives the horn 20 such that the horn 20 rotates to the second position.

This achieves that the horn 20 is held in this or second position relative to the body 30, i.e. a self-locking function of the horn 20 relative to the body 30 is achieved.

Of course, the above-listed cases can be reversely understood by the process of the arm 20 approaching from the second position to the third position, so that the elastic body 100 automatically drives the arm 20 to return to the second position according to the case that the arm 20 does not exceed the third position when the external force is removed, and automatically drives the arm 20 to return to the position when the arm 20 exceeds the third position and is located between the third position and the position.

Additionally, it is understood that there may be or more travel ranges between the folded and unfolded positions of horn 20 relative to fuselage 30.

For example, for the case of travel ranges between the folded position and the unfolded position, of the position and the second position can be understood as the folded position, and can be understood as the unfolded position, and the aforementioned preset positions can be adjusted according to the product status in both the folded position and the unfolded position.

In the case that a plurality of stroke intervals are arranged between the folding position and the unfolding position, the plurality of stroke intervals are sequentially arranged, wherein for two stroke intervals arranged at the head end and the tail end in the plurality of stroke intervals, the th position of the stroke interval at the head end can be understood as the folding position, and the second position of the stroke interval at the tail end can be understood as the unfolding position, at this time, the preset position can be adjusted at the th position and the second position (including the folding position at the head end and the unfolding position at the tail end) of the plurality of stroke intervals according to the product state.

The utility model provides a connection structure 10, its elastomer 100 can inhale the shake, with the vibration energy that prevents horn 20 between horn 20 and fuselage 30 transmits to fuselage 30, solve fuselage 30 vibration problem, and compare in the prior art additionally add damping system and carry out the scheme of damping, elastomer 100 in this design can cooperate with pivot subassembly 200 and respond with the release energy through compression with energy storage and elastic recovery, thereby well fuse the auto-lock and the rotation process between horn 20 and fuselage 30, thus, aspect, connection structure 10 collection damping, rotation, self-locking function has been realized in the integrated design of body, this has avoided establishing damping system existence alone among the prior art and has rotated, the auto-lock process compatibility is poor so that the damping system sets up the degree of difficulty big, the damping effect is not good, and the like problems, simultaneously, this has also realized the retrench of product spare part, more do benefit to the miniaturized design of aircraft, also more do benefit to push away in the field and be applicable, aspect, be different from the spring that the traditional spring carries out energy storage and the volume of the play is big, thereby the volume of energy storage is more compact and the volume of the product is reduced in the application, thereby the volume of the volume reduction of the product is more benefit to the volume of the volume reduction, thereby, the volume of the volume reduction of the product is reduced in the product is reduced greatly, thereby, the volume of the product is reduced in the application, it is favorable to utilize the product, thereby.

Preferably, the elastic body 100 is used for the connection of the body 30, and the rotation shaft assembly 200 is used for the connection of the horn 20.

Preferably, the elastic body 100 and the pivot assembly 200 are adapted to allow one of the horn 20 and the body 30 to be separated from the pivot assembly 200, that is, to allow one of the horn 20 and the body 30 to be separated from the pivot assembly 200, that is, to allow no contact, after the elastic body 100 is connected to one of the horn 20 and the body 30 and the pivot assembly 200 is connected to the other one of the horn 20 and the body 30, so that vibration isolation is almost formed between the horn 20 and the body 30, vibration energy transmitted from the horn 20 to the body 30 is minimized, and vibration damping effect on the body 30 is optimized.

Example 1:

as shown in fig. 3, in addition to the features of any embodiment, the rotating shaft assembly 200 further includes a rotating shaft 210 and a rotating member 220, wherein the rotating shaft 210 is connected to the elastic body 100, the rotating member 220 is disposed on the rotating shaft 210 and can rotate around the rotating shaft 210, the rotating member 220 is used for connecting to the other of the arm 20 and the body 30, and the rotating member 220 is in transmission fit with the elastic body 100, wherein during the rotation of the rotating member 220 to make the arm 20 approach the third position, the elastic body 100 is compressed, when the rotating member 220 rotates to make the arm 20 exceed the third position, the elastic body 100 is released, and the elastic restoring force generated by the elastic body 100 makes the rotating member 220 rotate the arm 20 to the th position or the second position.

In the present embodiment, the elastic body 100 is connected to the rotating shaft 210 for providing a rotation center to the rotating member 220, so that not only is the assembly simple and convenient, but also the assembly stability of the rotating shaft 210 can be ensured, thereby improving the rotation stability of the rotating member 220 rotating around the rotating shaft 210 and the arm 20 or the body 30 connected to the rotating member 220 and rotating with the rotating member 220 around the rotating shaft 210, and also the elastic body 100 can directly absorb the vibration of the rotating shaft 210 for providing the rotation center, wherein it can be understood that the rotating shaft 210 is a component for providing the rotation center to the rotating member 220, which can be equivalent to the base or foundation of the whole rotating shaft assembly 200, and the vibration is directly absorbed by the rotating shaft 210, which is better and more reliable than the existing scheme of using a spring to store energy and release energy to achieve the self-locking of the arm 20 and the body 30, and the vibration energy of the elastic body 100 in all directions of the rotating shaft assembly 200 can be well absorbed, thereby achieving the effect of maximally improving the effect of intercepting the vibration energy between the arm 20 and the body 30, and further are further.

Example 2:

as shown in fig. 3, in addition to the features of embodiment 1, further defines that the elastic body 100 is provided with an elastic body shaft hole 110, and a portion of the rotating shaft 210 is inserted into the elastic body shaft hole 110. the elastic body 100 and the rotating shaft 210 form a shaft hole fit therebetween, so that the elastic body 100 can efficiently absorb vibration at any radial position of the rotating shaft 210, and thus, the whole connecting structure 10 not only has better flexibility (or less rigidity) in the direction in which the elastic body 100 is pressed or released for energy storage or release, but also has better flexibility in any radial direction of the rotating shaft 210, so that the connecting structure 10 has better vibration damping effect between the horn 20 and the fuselage 30, and further improves the vibration influence of the fuselage 30.

The shaft 210 and the elastomer shaft hole 110 can have no or a small amount of clearance, so that can further improve the stability of the elastomer 100 on the shaft 210, and the stability of the rotation of the rotating member 220 and the arm 20 or the body 30 connected to the rotating member 220 can be correspondingly improved, and can also improve the vibration absorbing effect of the elastomer 100 on the shaft 210.

Preferably, the rotating shaft 210 is in transition fit with the elastic body shaft hole 110, that is, a gap amount determined by is provided between the rotating shaft 210 and the elastic body shaft hole 110, or the two are just matched, or a tight fit amount determined by is provided between the rotating shaft 210 and the elastic body shaft hole 110, so that the rotating shaft 210 can be more conveniently inserted into the elastic body shaft hole 110 to realize assembly, and the assembly efficiency of a product is ensured.

Optionally, the ratio of the axial length of the portion of the rotating shaft 210 in the elastomer shaft hole 110 to the total axial length of the rotating shaft 210 is greater than or equal to 1/4. The axial direction of the rotating shaft 210 can refer to the direction indicated by ax in fig. 1, 3, 4, 6 and 9. The axial length is also the length in the ax direction.

Therefore, the effect of elastomer 100 on stabilizing the rotating shaft 210 can be further improved, the rotating shaft 210 is prevented from deflecting, the rotating smoothness of the rotating member 220 rotating around the rotating shaft 210 and even the machine arm 20 or the machine body 30 connected to the rotating member 220 can be further improved, and by designing the matching length of the rotating shaft 210 and the elastomer shaft hole 110 to be more than 1/4 of the total length of the rotating shaft 210, the vibration energy of the elastomer 100 on the rotating shaft 210 can be further ensured to be fully absorbed, and the vibration influence of the machine body 30 can be further improved.

Preferably, the ratio of the axial length of the portion of the rotating shaft 210 in the elastomer shaft hole 110 to the total axial length of the rotating shaft 210 is greater than or equal to 1/3.

Preferably, the shape of the elastic body shaft hole 110 is adapted to the shape of the shaft section of the portion of the rotating shaft 210 located in the elastic body shaft hole 110, so that the opposite surfaces of the rotating shaft 210 and the elastic body shaft hole 110 can be uniformly contacted or have a similar curvature, so that the elastic body 100 has a better vibration absorption effect on the rotating shaft 210, and the stability effect of the elastic body 100 on the rotating shaft 210 can be better improved.

Alternatively, the elastomer shaft hole 110 may be designed as a circular hole, and the axial cross-sectional shape of the portion of the rotating shaft 210 located in the elastomer shaft hole 110 is circular. Of course, the present embodiment is not limited to this, and in other embodiments, the elastic body shaft hole 110 may be designed as an elliptical hole, a square hole, a rectangular hole, a trapezoidal hole, or the like, and accordingly, the shaft cross-sectional shape of the portion of the rotating shaft 210 located in the elastic body shaft hole 110 may be designed as an elliptical shape, a square shape, a rectangular shape, a trapezoidal shape, or the like.

It should be noted that, regardless of whether the shape of the inner peripheral surface of the elastic body shaft hole 110 and the axial cross-sectional shape of the portion of the rotating shaft 210 located in the elastic body shaft hole 110 are circular, elliptical, square, rectangular, trapezoidal, or other shapes not listed, such as triangular, pentagonal, semicircular, the shapes thereof are roughly understood to be circular, elliptical, square, rectangular, trapezoidal, triangular, pentagonal, semicircular, etc., macroscopically, and the shapes thereof are not particularly specified to be circular, elliptical, square, rectangular, trapezoidal, triangular, pentagonal, semicircular, etc., whose shapes are strictly required to be standardized.

Example 3:

as shown in fig. 4, in addition to the features of any of the embodiments, further defines that a th stopping portion 211 and a second stopping portion 212 are disposed on the rotating shaft 210, the th stopping portion 211 and the second stopping portion 212 are distributed at intervals along the axial direction of the rotating shaft 210, and a portion of the rotating shaft 210 located between the th stopping portion 211 and the second stopping portion 212 is connected to the elastic body 100 and the rotating member 220, so that the elastic body 100 and the rotating member 220 are axially limited between the th stopping portion 211 and the second stopping portion 212.

In this scheme, the stopping portion 211 and the second stopping portion 212 are arranged to be distributed on two sides of the elastic body 100 and the rotating member 220 along the axial direction of the rotating shaft 210, and the elastic body 100 and the rotating member 220 can be axially limited between the stopping portion 211 and the second stopping portion 212, so that the vibration absorption effect of the elastic body 100 on the vibration of the rotating shaft 210 along the axial direction is ensured in , thereby realizing the overall coverage (axial direction and any radial direction) of the elastic body 100 on the vibration absorption direction of the rotating shaft 210, further strengthening the vibration absorption effect on the machine body 30 in steps, in addition, in aspects, the relative limitation between the rotating member 220 and the elastic body 100 can be formed, so that the stress output of the rotating member 220 and the pressure stress input of the elastic body 100 are kept accurate, thereby improving the stress effect of the elastic body 100, and improving.

Preferably, as shown in fig. 5, of the first stopping portion 211 and the second stopping portion 212 of the is a stopping structure 2111 configured on the rotating shaft 210 by a body, and another is a fixing element 2121 assembled and connected with the rotating shaft 210, that is, of the first stopping portion 211 and the second stopping portion 212 of the is a body structure with the rotating shaft 210, and another is a fixing element 2121 capable of being assembled or disassembled with the rotating shaft 210, so that the assembling between the rotating shaft 210 and the elastic body 100 and the rotating element 220 is more convenient.

For example, the th stopping portion 211 is a stopping structure 2111, and the th stopping portion is configured on the rotating shaft 210. more specifically, as shown in fig. 3 and 5, the stopping structure 2111 is a shoulder structure formed on the rotating shaft 210. as shown in fig. 2, the second stopping portion 212 is a fixing member 2121, the fixing member 2121 can be a nut or a threaded locking ring, and the rotating shaft 210 is provided with a threaded structure, and the fixing member 2121 is threadedly connected with the rotating shaft 210 to achieve assembly.

Preferably, as shown in fig. 3 and 4, the -th stopper 211 is located at the axial end of the rotating shaft 210 and abuts against the elastic body 100, which makes the axial abutting position of the elastic body 100 and the rotating shaft 210 adjacent to the end of the rotating shaft 210, and can further enhance the shock absorbing effect on the rotating shaft 210 and even the whole rotating shaft assembly 200, and further improves the vibration effect of the body 30.

, as shown in fig. 4 and 5, the stop 211 has a stop end surface 2112, and the stop end surface 2112 is disposed along the outer circumference of the rotating shaft 210 and abuts against the elastic body 100, so that the supporting stress of the stop end surface 2112 to the elastic body 100 is more evenly distributed along the circumference of the elastic body 100, and the elastic body 100 is prevented from being subjected to concentrated stress, thereby reducing the risk of crushing the elastic body 100 and prolonging the life of the product.

Preferably, as shown in fig. 3, 4 and 5, a -th boss 121 is configured at a position of the elastic body 100 corresponding to the -th stopper 211, and the -th boss 121 of the elastic body 100 abuts against the -th stopper 211, which strengthens the elastic capacity of the position of the elastic body 100 for abutting against the -th stopper 211, so as to further strengthen the vibration-damping and vibration-absorbing effect of the elastic body 100 on the rotating shaft 210 by .

For example, as shown in fig. 10, the th protrusion 121 is a circular cylinder, and the stopping structures 2111 are circular shoulders distributed around the periphery of the rotating shaft 210.

Example 4:

in addition to the features of any embodiment, the cross-section of the rotating member 220 taken in a plane perpendicular to the center line of the rotating shaft 210 is defined by , as shown in fig. 2, as being non-circular, and the rotating member 220 is inserted into the connecting hole 21 of another of the arm 20 and the body 30, wherein the outer contour line 221 is adapted to the shape of the inner circumference of the connecting hole 21, so that the rotating member 220 can transmit torque to the arm 20 or the body 30 connected thereto to drive the arm 20 or the body 30 connected thereto to rotate during the rotation of the rotating member 220 around the rotating shaft 210, and the structure is designed to prevent the rotating member 220 from slipping with the arm 20 or the body 30, thereby providing the advantages of efficient and reliable torque transmission, and facilitating the assembly between the rotating member 220 and the connecting hole 21, such as inserting the rotating member 220 into the connecting hole 21.

Preferably, the outer contour line 221 includes an unclosed arc line segment 221a and a connection line segment 221b, and the arc line segment 221a and the connection line segment 221b are connected in a staggered manner; the connecting line 221b is a straight line segment, a broken line segment, or an arc line segment with a curvature different from that of the arc line segment 221 a.

For example, the centerline of the rotating shaft 210 is perpendicular to the paper surface and the perpendicular point can refer to the point O shown in fig. 2, wherein the outer contour 221 of the projection of the rotating member 220 along the centerline of the rotating shaft 210 (or the outer contour 221 of the cross section of the rotating member 220 perpendicular to the centerline of the rotating shaft 210) is non-circular.

As shown in fig. 2, more specifically, the outer contour line 221 includes two arc line segments 221a and two connecting line segments 221b, and the connecting line segments 221b are selected as straight line segments, wherein two ends of straight line segments are correspondingly connected to ends of the two arc line segments 221a, and two ends of straight line segments are correspondingly connected to ends of the two arc line segments 221a, so that the two straight line segments and the two arc line segments 221a are alternately arranged around the center line of the rotating shaft 210 and enclose the closed outer contour line 221.

Preferably, the two arc line segments 221a are distributed oppositely, and the middle of the arc line segment 221a protrudes towards a direction away from the central line of the rotating shaft 210; the two straight line segments are oppositely distributed.

More preferably, the two circular arc line segments 221a are distributed axisymmetrically or rotationally symmetrically, and the two straight line segments are distributed axisymmetrically or rotationally symmetrically. Such that the outer contour line 221 is substantially racetrack shaped. The design can make the atress of rotating piece 220 more even, more symmetrical in the transmission process to more do benefit to and promote the bearing capacity who rotates piece 220, promote product quality.

Of course, it is understood that the number of the circular arc line segments 221a may not be limited to the 2 listed, and may also be designed to be 1, 3 or more than 3 according to the requirement, and correspondingly, the number of the connecting line segments 221b may also not be limited to the 2 listed, and may also be designed to be 1, 3 or more than 3 according to the requirement.

Example 5:

as shown in FIG. 3, in addition to the features of any above, further defines that a rotating member shaft hole 222 is formed on the rotating member 220, and of the rotating shaft 210 is partially inserted into the rotating member shaft hole 222, so that the rotating member 220 can rotate around the rotating shaft 210. by forming a shaft hole fit between the rotating member 220 and the rotating shaft 210, the rotational stability of the rotating member 220 is ensured, and after the vibration on the horn 20 is transmitted to the rotating member 220, the rotating member 220 is radially transmitted to the rotating shaft 210 and further radially transmitted to the elastic body 100 through the rotating shaft 210 and further , so that the vibration energy is finally absorbed by the elastic body 100, thereby ensuring the absorption efficiency of the vibration energy of the rotating member 220, and further further improves the vibration absorption effect of the body 30.

Example 6:

as shown in fig. 1 and 3, in addition to the features of any , step further defines that the rotating shaft assembly 200 further includes a movable element 230, a cam transmission engagement is formed between the movable element 230 and the rotating element 220, and the rotating element 220 can rotate relative to the movable element 230, so that the movable element 230 compresses or releases the elastic body 100, wherein when the contact point of the rotating element 220 and the movable element 230 reaches the highest point of the cam, the elastic body 100 is compressed, and when the contact point of the rotating element 220 and the movable element 230 avoids the highest point of the cam, the elastic body 100 is released, and the elastic restoring force generated by the elastic body 100 drives the rotating element 220 to rotate, so that the arm 20 automatically rotates to the th position or the second position.

The cam transmission cooperation is formed between the moving part 230 and the rotating part 220, so that the rotating motion of the rotating part 220 can be converted into the displacement motion of the moving part 230 for output, that is, in the rotating process of the rotating part 220, the moving part 230 is driven to perform the displacement motion and compress the elastic body 100, and in turn, the elastic body 100 elastically restores to drive the moving part 230 to perform the displacement motion, so that the moving part 230 drives the rotating part 220 to rotate, and the rotating part 220 drives the arm 20 to rotate for resetting.

, as shown in fig. 3, the elastic body 100 is located at the side of the movable element 230 along the axial direction of the rotating shaft 210, the rotating element 220 is located at the other side of the movable element 230 along the axial direction of the rotating shaft 210, the surface of the movable element 230 corresponding to the rotating element 220 is configured with a cam structure 231, the surface of the rotating element 220 corresponding to the movable element 230 is configured with a second cam structure 223, and the cam structure 231 and the second cam structure 223 form a cam transmission fit.

The form that the elastomer 100, the moving part 230, and the rotating part 220 are arranged along the axial direction of the rotating shaft 210 has the advantages of compact layout and accurate positioning and limiting of the moving part 230, and the moving part 230 is positioned between the elastomer 100 and the rotating part 220, so that the moving stroke of the moving part 230 can be designed to be shorter, the driving precision of the rotating part 220 and the elastomer 100 to the moving part 230 can be higher, and the operation precision of the product can be further improved by .

In more detail, of the th cam structure 231 and the second cam structure 223 includes a slider, and includes a plurality of grooves, two opposite side wall surfaces of the grooves are configured as inclined surfaces or arc surfaces and make openings of the grooves gradually increase, and the rotating member 220 rotates relative to the moving member 230 so that the slider slides along the side wall surfaces of the grooves.

, adjacent side wall surfaces of adjacent grooves meet and define a peak 2311, and the apex of the peak 2311 is formed as the highest point of the cam.

For example, as shown in fig. 5, the movable member 230 is provided with the th cam structure 231, the th cam structure 231 includes two grooves, the rotating member 220 is provided with the second cam structure 223, and the second cam structure 223 includes a slider as an example for illustration:

two convex peak structures 2311 are formed on the movable piece 230, which correspond to the th convex peak structure and the second convex peak structure, two grooves correspond to the th groove and the second groove, the th groove and the second groove are arranged along the circumferential direction of the rotating shaft 210, each groove has two side wall surfaces, the th side wall surface of the th groove is adjacent to the th side wall surface of the second groove and defines the th convex peak structure, and the second side wall surface of the th groove is adjacent to the second side wall surface of the second groove and defines the second convex peak structure.

Preferably, the side wall surface and the second side wall surface of the groove form an arc-shaped recess with gradually increasing opening together, and the side wall surface and the second side wall surface of the second groove form an arc-shaped recess with gradually increasing opening together, so as to reduce the sliding resistance.

The rotation member 220 is formed with a convex surface portion protruding toward the movable member 230, and the convex surface portion defines a protrusion 233 structure as a slider, and the number of the sliders may be or more, and preferably, the surface of the convex surface portion is a convex arc shape to reduce sliding resistance.

When the arm 20 is at the th position, the slider extends into the th groove to fit with the th groove.

When the arm 20 is located at the second position, the slider extends into the second groove to fit with the second groove.

During the rotation of the arm 20 from the th position to the third position, the slider slides along the th sidewall of the th groove and approaches the th hump structure, so that the movable member 230 is lifted by the rotating member 220 and compresses the elastic member 100, wherein,

when the external force applied to the horn 20 is removed and the horn 20 does not exceed the third position, the elastic body 100 releases elastic potential energy to push the moving part 230 to make the moving part 230 lean against the rotating part 220, in the process, the sliding block slides along the side wall surface of the groove and is away from the hump structure, so that the rotating part 220 rotates relative to the moving part 230 until the sliding block returns to the position matched with the groove again, and the horn 20 is correspondingly reset to the position;

when the arm 20 exceeds the third position, the elastic body 100 releases elastic potential energy to push the moving member 230 to make the moving member 230 lean against the rotating member 220, in the process, the slider slides along the th side wall surface of the second groove and is away from the peak structure, so that the rotating member 220 rotates relative to the moving member 230 until the slider reaches the position matched with the second groove, and the arm 20 is correspondingly reset to the second position.

Preferably, as shown in fig. 3, the movable member 230 is provided with a movable member axle hole 232, portion of the rotating shaft 210 is inserted into the movable member axle hole 232, and the movable member 230 moves along the axial direction of the rotating shaft 210 to compress or release the elastic body 100. in the aspect of , the movable member 230 and the rotating member 220 can be positioned by the rotating shaft 210, so that the cam transmission between the movable member 230 and the rotating member 220 is ensured to be efficient, accurate and stable, and the reliability of the self-locking function of the rotating shaft assembly 200 is ensured, in addition, in the aspect of , the rotating shaft 210 can guide the movement of the movable member 230, so that the movable member 230 can compress or release the elastic body 100 along the axial direction of the rotating shaft 210, and accordingly the expansion and contraction direction of the elastic body 100 is controlled, which is more beneficial to ensuring the high efficiency of energy storage and release of the elastic body 100.

Preferably, as shown in fig. 3 and 4, a second boss 122 is configured at a portion of the elastic body 100 corresponding to the movable member 230, and the second boss 122 of the elastic body 100 abuts against the movable member 230, wherein the elastic capability of the portion of the elastic body 100 abutting against the movable member 230 is enhanced by abutting the second boss 122 against the movable member 230, so as to further enhance the vibration reduction and absorption effect of the elastic body 100 on the rotating shaft 210.

For example, as shown in fig. 4, the second boss 122 is a circular cylindrical body, and the movable member 230 is located at and abuts against the end of the circular cylindrical body in the axial direction.

, the moving part 230 is connected with the elastic body 100, wherein, because the elastic body 100 is connected with of the machine arm 20 or the machine body 30, the moving part 230 is connected with the elastic body 100, the relative fixation between the moving part 230 and the of the machine arm 20 or the machine body 30 can be realized by , which not only realizes that the elastic body 100 absorbs and intercepts the vibration transmitted by the moving part 230 and improves the vibration problem of the machine body 30, but also limits the rotation of the moving part 230 along with the rotating part 220, improves the cam matching precision between the moving part 230 and the rotating part 220 and improves the self-locking effect between the machine arm 20 and the machine body 30.

In example , moveable member 230 is bonded to elastomeric body 100. in more detail, moveable member 230 is secured to elastomeric body 100 by bonding opposing surfaces of moveable member 230 to elastomeric body 100 with an adhesive such as glue, double sided tape, or the like.

In the second example, as shown in fig. 5, of the movable element 230 and the elastic body 100 is provided with a protrusion 233, and is provided with a recess 124, and the protrusion 233 is inserted into the recess 124 to fix the movable element 230 and the elastic body 100.

For the second example, optionally, the number of the protrusions 233 and the number of the recesses 124 may be the same, so that can be correspondingly inserted between the protrusions 233 and the recesses 124, and of course, the number of the protrusions 233 is less than that of the recesses 124, so that the protrusions 233 can be inserted into of the recesses 124.

The protrusions 233 are , the recesses 124 are , and the recesses 124 are arranged corresponding to the protrusions 233. preferably, the protrusions 233 are arranged eccentrically with respect to the center line of the rotating shaft 210, so that the protrusions 233 and the recesses 124 can transmit torque between the movable member 230 and the elastic body 100 in a plug-in fit to prevent the movable member 230 from rotating with respect to the elastic body 100. of course, this does not exclude the case where the protrusions 233 are arranged concentrically with the rotating shaft 210. when the protrusions 233 of are arranged concentrically with the rotating shaft 210, the protrusions 233 and the recesses 124 can be designed in a manner that the protrusions 233 are adapted to be restricted from rotating in the recesses 124, for example, the protrusions 233 are designed to have a non-circular cross-section, and the movable member 230 can be prevented from rotating with respect to the elastic body 100.

For example, as shown in fig. 5, the movable member 230 is provided with a plurality of protrusions 233, and the plurality of protrusions 233 are arranged around the circumference of the movable member 230 at intervals, so that the transmission of the torque between the movable member 230 and the elastic body 100 is more uniform, thereby improving the stress effect of the movable member 230 and the elastic body 100.

Of course, it is to be understood that the above example and example two may also be combined in a non-conflicting manner.

Besides, it can be understood that the design is not limited to the above-mentioned and example two, and there are various ways to connect the movable element 230 and the elastic body 100, for example, the movable element 230 and the elastic body 100 can be optionally designed to be combined into body by an over-molding manner, and the connection form between the elastic body 100 and the movable element 230 is not exhaustive here, but falls within the protection scope of the present disclosure without departing from the design concept.

Besides, it is understood that the design is not limited to the form of the above-mentioned embodiment 6, and in other embodiments, the movable member 230 may not be designed, but the th cam structure 231 is provided on the elastic body 100, and the second cam structure 223 is provided on the rotating member 220, so that the elastic body 100 and the rotating member 220 form a cam transmission fit.

Example 7:

in addition to the features of any above, step further defines that the rotating shaft 210 is a steel component, for example, the rotating shaft 210 is a carbon steel shaft component, which has the advantages of low cost, high rigidity, and being not easy to deform, etc., so as to ensure smooth rotation between the arm 20 and the body 30, and at the same time, to ensure the precision of the cooperation between the rotating shaft 210 and the elastic body 100, thereby ensuring the vibration absorbing effect of the elastic body 100 on the rotating shaft 210, and to ensure the precision of the cooperation between the rotating part 220 and the moving part 230, thereby ensuring the precision of self-locking between the arm 20 and the body 30.

Example 8:

in addition to the features of any embodiment, step further defines that the elastic body 100 is a rubber body or a high-strength rubber body, and the rubber body and the high-strength rubber body have good shock absorption performance and resilience performance, so that step further improves the shock absorption effect on the body 30, and step further improves the self-locking precision and the reliability of the self-locking function between the horn 20 and the body 30.

Example 9:

as shown in FIG. 2, in addition to the features of any embodiment, further defines that the elastic body 100 is configured with a plurality of connecting portions 123, the connecting portions 123 are used for connecting with of the horn 20 and the body 30, and at least two connecting portions 123 of the plurality of connecting portions 123 are arranged in an axisymmetric distribution, in this embodiment, the plurality of connecting portions 123 are arranged in an axisymmetric distribution between at least two connecting portions, so that the elastic body 100 can have at least two symmetrically-distributed connecting positions, the elastic body 100 is not easy to rotate relative to the horn 20 or the body 30 connected with the elastic body 100, the assembling stability of the elastic body 100 is improved, and the vibration damping effect of the elastic body 100 is further enhanced by .

, as shown in fig. 2, at least two connection parts 123 of the connection parts 123 form an included angle with the central line of the rotation shaft assembly 200 as the vertex.

In more detail, the rotating shaft assembly 200 includes the rotating shaft 210, the center line of the rotating shaft assembly 200 can be understood as the center line or the axis of the rotating shaft 210, as shown in fig. 2, the rotating shaft 210 is arranged perpendicular to the paper, the center line can be understood with reference to point O, the elastic body 100 is provided with two connecting portions 123, rays are led out from the point O through the center of connecting portions 123, rays are led out from the point O through the center of another connecting portions 123, the two rays form an included angle a, and it can be understood that the two connecting portions 123 substantially form an included angle a shape.

Preferably, as shown in fig. 2, the connection portion 123 includes a lug 1231, and the lug 1231 is located at the edge of the elastic body 100, wherein the lug 1231 is used for connecting with the horn 20 or the body 30, and the lug 1231 is located at the edge of the elastic body 100, so that the portion of the elastic body 100 used for connecting with the horn 20 or the body 30 is spaced from the center line of the rotation shaft 210 by a distance of to form a moment arm, which can further enhance the rotation-proof effect of the elastic body 100 by , and at the same time, it is beneficial to avoid the rotation shaft 210, and prevent the interference between the rotation shaft 210 and the fastener 40 for locking the elastic body 100 and the horn 20 or the body.

furthermore, as shown in fig. 2 and 3, the lug 1231 is provided with a mounting hole 1232, as shown in fig. 11 and 12, the mounting hole 1232 is used for being assembled with a fastening member 40 (e.g. a screw) to be fixed to the horn 20 and the fuselage in the fuselage 30. not only has the advantages of simple structure and easy processing and assembly, but also can improve the fastening effect of the elastic body 100 and the horn 20 or the fuselage 30, prevent the elastic body 100 from shaking, and thus improve the vibration absorption and damping effect of the elastic body 100.

Example 10:

in addition to the features of any embodiment, step further defines that the arm 20 is in the unfolded state relative to the body 30 when the arm 20 is rotated to the th position relative to the body 30, and the arm 20 is in the folded state relative to the body 30 when the arm 20 is rotated to the second position relative to the body 30. thus, the function of automatically driving the arm 20 to the folded or unfolded position by releasing the elastic potential energy by the elastic body 100 after releasing the arm 20 is realized, the use is convenient, and the cam transmission matching mechanism between the rotating member 220 and the moving member 230 can be simplified.

It is to be understood that any items or any plurality of items in the above embodiments 1 to 9 may be combined in a non-conflicting manner, and will not be described again here.

As shown in fig. 6 to 12, an embodiment of the second aspect of the present invention provides racks, which include the connecting structure 10 described in any of the embodiments above, a horn 20 connected to the elastic body 100 of the connecting structure 10 and of the rotating shaft assembly 200, and a body 30 connected to the elastic body 100 and the other of the rotating shaft assembly 200.

The utility model discloses the frame that above-mentioned embodiment provided is through being provided with above-mentioned connecting structure 10 of wanting technical scheme to have above all beneficial effects, no longer describe herein.

Preferably, as shown in fig. 11, of the horn 20 and the body 30 for connecting with the elastic body 100 are provided with a fixing hole 33 and a relief hole 31, the relief hole 31 is used for relieving the rotating shaft assembly so that of the horn 20 and the body 30 for connecting with the elastic body 100 is not in contact with the rotating shaft assembly, the fixing hole 33 is opposite to the mounting hole 1232 of the elastic body 100, the fastener 40 penetrates through the fixing hole 33 and the mounting hole 1232, and of the horn 20 and the body 30 for connecting with the elastic body 100 is locked with the elastic body 100 at .

, as shown in fig. 11, the positioning part 32 is further provided on of the arm 20 and the body 30 for connecting with the elastic body 100, and the positioning part 32 is used for abutting against the elastic body 100, so that the installation hole 1232 is quickly aligned with the fixing hole 33.

For example, as shown in fig. 11, the positioning portion 32 is a rib, and the rib abuts against the side wall surface of the elastic body 100 to position the elastic body 100, in more detail, the rib is in an included angle shape, and the vertex of the rib abuts against the concave angle formed by the two connecting portions 123, so that the positioning guidance performance is better, the rib has higher strength, and the auxiliary limiting function is performed on the elastic body 100 to a certain extent at .

The specific embodiment is as follows:

the rack provided by the embodiment comprises a horn 20, a body 30 and a connecting structure 10, wherein groups of connecting structures 10 can be arranged between the horn 20 and the body 30, or as shown in fig. 6, 9 and 10, a plurality of groups of connecting structures 10 can be arranged between the horn 20 and the body 30, wherein each group of connecting structures 10 is respectively connected with the horn 20 and the body 30, and enables the horn 20 to rotate relative to the body 30 and enables the rotation of the horn 20 relative to the body 30 to have a position and a second position, wherein the horn 20 is in an unfolded state relative to the body 30 when the horn 20 rotates to a position relative to the body 30, and the horn 20 is in a folded state relative to the body 30 when the horn 20 rotates to the second position relative to the body 30.

Preferably, as shown in fig. 6 and 9, two sets of connecting structures 10 are disposed between the horn 20 and the body 30, and preferably, the two sets of connecting structures 10 are arranged and distributed at intervals along the axial direction of the rotating shaft 210.

Each set of connection structures 10 includes: an elastomer 100 and a spindle assembly 200.

The elastic body 100 is a rubber body or a super rubber body, and the elastic body 100 is connected with the body 30.

The rotating shaft assembly 200 includes a rotating shaft 210, a rotating member 220, and a moving member 230, the rotating shaft 210 is a steel component, and the rotating member 220 and the moving member 230 may be plastic components, as shown in fig. 3, an elastic body shaft hole 110 is disposed on the elastic body 100, a moving member shaft hole 232 is disposed on the moving member 230, a rotating member shaft hole 222 is disposed on the rotating member 220, the rotating shaft 210 is inserted into the elastic body shaft hole 110, the moving member shaft hole 232, and the rotating member shaft hole 222, the moving member 230 is disposed between the elastic body 100 and the rotating member 220, and the moving member 230 is connected to the elastic body 100, specifically, as shown in fig. 5, the moving member 230 and the elastic body 100 are inserted through a protrusion 233 and a recess 124, a surface of the moving member 230 corresponding to the rotating member 220 is configured with a fourth cam structure 231, a surface of the rotating member 220 corresponding to.

Specifically, when the contact point of the rotating member 220 and the moving member 230 reaches the highest point of the cam, the elastic body 100 is compressed, and when the contact point of the rotating member 220 and the moving member 230 avoids the highest point of the cam, the elastic body 100 is released, and the elastic restoring force generated by the elastic body 100 drives the rotating member 220 to rotate, so that the arm 20 automatically rotates to the th position or the second position.

In more detail, the th cam structure 231 can be referred to as a groove as shown in FIG. 5, and the second cam structure 223 can be referred to as a slider as shown in FIG. 5. two opposite side wall surfaces of the groove are configured as a slope or a cambered surface and make the opening of the groove gradually increase, and the rotating member 220 rotates relative to the movable member 230 to make the slider slide along the side wall surfaces of the groove, wherein adjacent side wall surfaces of adjacent grooves are engaged with each other and define a peak structure 2311, and the peak of the peak structure 2311 is formed as the highest point of the cam.

The ratio of the axial length of the portion of the rotating shaft 210 in the elastic body shaft hole 110 to the total axial length of the rotating shaft 210 is greater than or equal to 1/4. And the rotating shaft 210 and the elastomer shaft hole 110 are in transition fit or interference fit.

The end of the rotating shaft 210 in the axial direction is provided with a first stopping portion 211 of , the end in the axial direction is provided with a second stopping portion 212, and the elastic body 100, the movable element 230 and the rotating element 220 are limited between the first stopping portion 211 of and the second stopping portion 212.

Elastic body 100 is configured with a first boss at a position corresponding to a stop 211 of , and a first boss of elastic body 100 abuts against a stop 211 of , elastic body 100 is configured with a second boss 122 at a position corresponding to movable piece 230, and second boss 122 of elastic body 100 abuts against movable piece 230.

The outer contour line 221 of the section of the rotation member 220 taken by a plane perpendicular to the center line of the rotation shaft 210 is non-circular, and as shown in fig. 9, the rotation member 220 is inserted into the coupling hole 21 of the horn 20, wherein the outer contour line 221 is adapted to the shape of the inner circumferential contour of the coupling hole 21.

In addition, the elastic body 100 is configured with a plurality of connecting parts 123, the connecting parts 123 are connected with the body 30, and at least two connecting parts 123 of the plurality of connecting parts 123 are axially symmetrically distributed, and step , at least two connecting parts 123 of the plurality of connecting parts 123 are configured with an included angle shape by taking the central line of the rotating shaft assembly 200 as a vertex.

Preferably, the connecting portion 123 includes a lug 1231, and the lug 1231 is located at the edge of the elastic body 100. step , a mounting hole 1232 is formed on the lug 1231, and the mounting hole 1232 is used for being assembled with the fastener 40 to be fixed to the body 30.

In contrast, in the existing frame, the arm 20 and the body 30 are connected through a rotating shaft assembly (also called a rotating shaft) which comprises an upper cam, a lower cam, a spring, a cylinder, a shaft and a fixing piece, the rotating shaft is connected with the body through the upper cam, the lower cam is sleeved on the rotating shaft, the end abuts against the upper cam, the other end abuts against the spring, and the cylinder is sleeved outside the spring and the lower cam and is connected with the arm.

The connecting structure 10 of the housing provided in this embodiment is different from an existing rotating shaft assembly, and specifically, the connecting structure 10 includes a rotating shaft 210, an elastic body 100 (such as rubber, acrylic rubber, etc.), a rotating member 220, a moving member 230, a fixing member 2121, etc., where the rotating member 220 is fixed to the housing arm 20, and rotates with the housing arm 20 , and during the rotation, the moving member 230 receives the acting force of the rotating member 220 to move upward and compress the elastic body 100, and the elastic body 100 generates an elastic force after deforming, and the elastic force reaches a maximum value after rotating by a certain angle (that is, when a contact point between the th cam structure 231 and the second cam structure 223 is at a highest point of the cam), and then the elastic body 100 releases elastic potential energy to enable the rotating member 220 to automatically rotate to a certain angle, thereby completing.

Compared with the prior art, the structure has the advantages that the elastic body 100 is adopted to absorb vibration and reduce vibration and store energy and release energy, so that the size of the whole connecting structure 10 can be greatly reduced, and the number of parts of the whole connecting structure 10 is reduced. And wherein, the elastic body 100 is installed on the fuselage 30 through the two installation holes 1232 (or more) of the fastening member 40, so that the fuselage 30 is isolated from the horn 20 by the elastic body 100, thus, the mode of the elastic system composed of the horn 20+ the elastic body 100 can be changed by designing the size of the elastic body 100, etc., so as to better isolate the vibration of the horn 20, reduce the vibration amplitude of the fuselage 30, and improve the vibration performance of the fuselage 30.

In order to further verify the damping effect brought by the connecting structure 10 of the frame to the arm 20 and the fuselage 30 of the frame in the present embodiment at , on the four-axis drone, the variable is used as the connecting structure 10 (currently, the rotating shaft assembly) to perform the test, and the vibration acceleration amplitudes of the arm 20 and the fuselage 30 are respectively detected, while keeping the other conditions substantially the same, the following description is made by comparing the vibration conditions of the arm 20 and the fuselage 30 of the present design with the vibration conditions of the existing arm and fuselage with respect to the aforementioned test result data:

fig. 13a is a graph showing the relationship between frequency and acceleration amplitude of the body 30 in the gantry according to the present embodiment. In the frame, a machine arm 20 is connected with a machine body 30 through a connecting structure 10 of the embodiment;

FIG. 13b is a graph of frequency versus acceleration amplitude for a fuselage in a conventional airframe. In the machine frame, the machine arm 20 and the machine body 30 are connected through a conventional rotating shaft assembly (also called a rotating shaft).

Comparison table of maximum values of fuselage acceleration amplitude

Direction of acceleration amplitude	Fuselage of the embodiment	Existing fuselage	Change of state
				x	1665m/s²	2032m/s²	Descend
y	4388m/s²	5961m/s²	Descend
				z	3294m/s²	5152m/s²	Descend

From the above comparison results, the maximum value of the acceleration amplitude of the fuselage 30 of the present embodiment shows a reduced variation result in the x, y, and z directions compared with the maximum value of the acceleration amplitude of the existing fuselage, and from the reduced amplitude, it can be known that the present embodiment uses the connecting structure 10 to connect the fuselage 30 and the arm 20, and compared with the existing case of using the rotating shaft assembly (also called rotating shaft) to connect the fuselage 30 and the arm 20, the combined vibration amplitude of the fuselage 30 is reduced by at least 30%, so that the performance of the structure and the internal components of the fuselage 30 can be greatly optimized, and the performance of the aircraft can be greatly improved, wherein, taking fig. 11 as an example, according to the coordinate setting rule, the fuselage 30 establishes a coordinate system, wherein points in the length extension direction of the fuselage 30 are in the x direction, points in the width direction of the fuselage 30 are in the y direction, and points in the up and down direction of the fuselage 30 are in the z direction.

Fig. 14a is a graph showing the relationship between the frequency and the acceleration amplitude of the horn 20 in the gantry according to the present embodiment. In the frame, a machine arm 20 is connected with a machine body 30 through a connecting structure 10 of the embodiment;

fig. 14b is a graph of frequency versus acceleration amplitude for the horn in the prior art gantry. In the machine frame, the machine arm 20 and the machine body 30 are connected through a conventional rotating shaft assembly (also called a rotating shaft).

Comparison table of maximum values of acceleration amplitude of horn

Direction of acceleration amplitude	Arm of the embodiment	Existing horn	Change of state
				x	1022m/s²	1172m/s²	Descend
y	1199m/s²	1373m/s²	Descend
				z	1713m/s²	2362m/s²	Descend

From the above comparison results, the maximum value of the acceleration amplitude of the horn 20 of the present embodiment shows a decreasing change result in the x, y, and z directions compared to the maximum value of the acceleration amplitude of the existing horn, and from the decreasing, it can be known that the present embodiment adopts the connection structure 10 to connect the fuselage 30 and the horn 20, and compared with the existing case of adopting the rotating shaft assembly (also called rotating shaft) to connect the fuselage 30 and the horn 20, the comprehensive vibration amplitude of the horn 20 is reduced by about 30%, the shaking of the horn 20 can be reduced, the flight stability and the control accuracy can be improved, and steps can be further performed to greatly optimize the structure and the internal component performance of the fuselage 30.

It is to be understood that, since the variables in the two sets of experiments are the connecting structure 10 (in this embodiment) and the rotating shaft assembly (in the prior art), the damping effect obtained by the connecting structure 10 in the embodiment of the compared to the prior rotating shaft assembly can also be demonstrated by referring to the above experimental conclusion, and will not be described herein again.

An embodiment of the third aspect of the present invention provides kinds of aircrafts, including the power system and the frame described in any of the embodiments above, the power system is provided on the horn 20 in the frame for providing flight power for the aircrafts.

Preferably, as shown in fig. 6, 7 and 8, the horn 20 has opposite nd and

second ends

22a and 22b, the connecting structure 10 is connected with the nd end 22a of the horn 20, and the power system is connected with the second end 22 b.

Alternatively, the power system may include a motor and a rotor driven to rotate by the motor.

Optionally, the aircraft is a drone.

To sum up, the utility model provides a connection structure, frame and aircraft, among the connection structure, adopt this elastomer (for example rubber, the dominant force glues etc.) to provide elasticity, promote the horn to carry out automatic re-setting, and simultaneously, the elastomer can be directly as the part that pivot and fuselage are connected, realize that the elastomer vibrates the interception between fuselage and horn, the aspect, compare in current pivot, shortened the holistic length of pivot or connection structure, reduce the holistic volume of pivot or connection structure, make connection structure's design more free, and also more do benefit to the miniaturized design of aircraft, in addition the aspect, the elastomer is as the adapting unit of connection structure and fuselage, all possess the damping function in all directions, and compare in current structure that has the spring to carry out the energy storage, the structure of energy release and the structure of additionally setting up damping system, when realizing reducing product volume size, the damping effect to the fuselage is also better.

In the present application, the terms "", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance, the terms "plurality" or "a plurality" are used to refer to two or more unless otherwise specifically limited, the terms "mounted", "connected", "fixed", and the like are each for understanding that "connected" may be either a fixed connection or a detachable connection, or for example, and "connected" may be either a direct connection or an indirect connection via intermediate media.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description herein, the descriptions of the terms " embodiments," " embodiments," "specific embodiments," etc. are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least embodiments or examples of the invention.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

A connection arrangement for pivotal connection of a horn to a body so that the horn is pivotable relative to the body and is retained in a predetermined position relative to the body, the connection arrangement comprising:

an elastic body for connecting of the horn and the body;

a pivot assembly connected to the elastomer and adapted to connect to another of the horn and the fuselage such that rotation of the horn relative to the fuselage has at least travel ranges, and the elastomer and the pivot assembly are adapted to allow separation between the of the horn and the fuselage and the pivot assembly;

wherein the travel range has an th position, a second position, and a third position between the th position and the second position, the spindle assembly further for abutting and compressing the elastomer during the approaching of the horn to the third position, the elastomer further for automatically rotating the horn to either the th position or the second position when the horn exceeds the third position.
2. The connection structure according to claim 1, wherein the rotary shaft assembly includes:

the rotating shaft is connected with the elastic body;

the rotating piece is arranged on the rotating shaft, can rotate around the rotating shaft, is used for being connected with the other of the machine arm and the machine body, and is in transmission fit with the elastic body;

wherein, in the process of rotating the rotating element to make the machine arm close to the third position, the elastic body is compressed, when the rotating element rotates to make the machine arm exceed the third position, the elastic body is released, and the elastic restoring force generated by the elastic body makes the rotating element drive the machine arm to rotate to the th position or the second position.
3. The connection structure according to claim 2,

the elastic body is provided with an elastic body shaft hole, and the part of the rotating shaft is sleeved in the elastic body shaft hole in a penetrating manner;

the axial length of the part of the rotating shaft in the elastic body shaft hole accounts for 1/4 or more in proportion to the total axial length of the rotating shaft, and/or the rotating shaft and the elastic body shaft hole are in transition fit or interference fit.
4. The connection structure according to claim 2,

the rotating shaft is provided with an stopping portion and a second stopping portion, the stopping portion and the second stopping portion are distributed at intervals along the axial direction of the rotating shaft, and the portion of the rotating shaft located between the stopping portion and the second stopping portion is connected with the elastic body and the rotating member, so that the elastic body and the rotating member are axially limited between the stopping portion and the second stopping portion.
5. The connection structure according to claim 4,

of the stopping part and the second stopping part is a stopping structure of body on the rotating shaft, and is a fixing piece assembled and connected with the rotating shaft, and/or

The th stop part is located at the axial end of the rotating shaft, the th stop part is provided with a stop end surface which is arranged along the outer circumference of the rotating shaft and is abutted against the elastic body, and/or

The part of the elastic body corresponding to the th stop is configured with a th boss, and the th boss of the elastic body abuts against the th stop.
6. The connection structure according to claim 2,

the outer contour line of the cross section formed by a plane perpendicular to the central line of the rotating shaft of the rotating part is non-circular, and the rotating part is used for being inserted into connecting holes on the other of the machine arm and the machine body;

wherein the outer contour line is adapted to the shape of the inner circumferential contour of the coupling hole.
7. The connection structure according to claim 6,

the outer contour line comprises an unsealed circular arc line segment and a connecting line segment, and the circular arc line segment and the connecting line segment are connected in a staggered mode;

the connecting line segment is a straight line segment, a broken line segment or an arc line segment with curvature different from that of the circular arc line segment.
8. The connection structure according to claim 2, wherein the rotary shaft assembly further comprises:

the movable piece is connected with the elastic body, a cam transmission fit is formed between the movable piece and the rotating piece, and the rotating piece can rotate relative to the movable piece so that the elastic body is compressed or released by the movable piece;

when the contact point of the rotating piece and the moving piece reaches the highest point of the cam, the elastic body is compressed, and when the contact point of the rotating piece and the moving piece avoids the highest point of the cam, the elastic body is released, and the elastic restoring force generated by the elastic body drives the rotating piece to rotate, so that the machine arm automatically rotates to the th position or the second position.
9. The connection structure according to claim 8,

the elastic body is located on the side of the moving part along the axial direction of the rotating shaft, the rotating part is located on the other side of the moving part along the axial direction of the rotating shaft, the surface of the moving part corresponding to the rotating part is provided with a cam structure, the surface of the rotating part corresponding to the moving part is provided with a second cam structure, and the cam structure and the second cam structure form cam transmission fit.
10. The connection structure according to claim 9,

of the cam structure and the second cam structure comprises a slider and comprises a plurality of grooves;

two opposite side wall surfaces of the groove are formed into inclined surfaces or cambered surfaces, the opening of the groove is gradually enlarged, adjacent side wall surfaces of adjacent grooves are connected with each other to define a convex peak structure, and the peak of the convex peak structure is formed as the highest point of the cam;

the rotating member rotates relative to the movable member so that the slider slides along the side wall surface of the groove.
11. The connection structure according to claim 8,

the rotating piece is provided with a rotating piece shaft hole, and the part of the rotating shaft is penetrated in the rotating piece shaft hole, so that the rotating piece can rotate around the rotating shaft;

the movable piece is provided with a movable piece shaft hole, the part of the rotating shaft is sleeved in the movable piece shaft hole in a penetrating mode, and the movable piece moves along the axial direction of the rotating shaft to compress or release the elastic body.
12. The connection structure according to claim 8,

the elastic body is provided with a second boss corresponding to the movable piece, and the second boss of the elastic body is abutted against the movable piece.
13. The connection structure according to claim 8,

the movable piece is bonded with the elastic body; or

one of the movable piece and the elastic body is provided with a protrusion, and one of the movable piece and the elastic body is provided with a concave part, and the protrusion is inserted into the concave part to fix the movable piece and the elastic body.
14. The connection structure according to of any one of claims 1 to 13,

the elastomer is configured with a plurality of connections for connection with the one of the horn and the fuselage;

and at least two of the connecting parts are in axisymmetric distribution, and/or an included angle model is constructed by taking the central line of the rotating shaft component as a vertex.
15. The connection structure according to claim 14,

the connecting portion includes a lug at the elastomeric edge;

the lugs are provided with mounting holes for fitting with fasteners to secure the in the horn and the fuselage.
16. The connection structure according to of any one of claims 1 to 13,

when the horn rotates to the th position relative to the body, the horn is in a deployed state relative to the body;

when the horn rotates to the second position relative to the fuselage, the horn is in a folded state relative to the fuselage.
17, rack, comprising:

the linking structure of any of claims 1 to 16;

a horn connected to of the elastic body and the rotating shaft assembly of the connecting structure;

a body coupled to another of the elastomer and the spindle assembly.
18, an aircraft, comprising the frame of claim 17 and a power system mounted on a horn in the frame for providing flight power to the aircraft.