CN114046284A

CN114046284A - Rotary cylinder and motor-driven device

Info

Publication number: CN114046284A
Application number: CN202111519983.6A
Authority: CN
Inventors: 骆玲玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-02-15

Abstract

The invention discloses a rotary cylinder and a motorized device. The rotary cylinder comprises an upper cover and a base assembly which are mutually covered, and a rotating shaft, wherein at least one part of the rotating shaft is arranged in a driving space formed by the upper cover and the base assembly, the rotating shaft is provided with fan blades, and the driving space is divided into at least two mutually closed parts by the fan blades and the rotating shaft. Therefore, the fan blade realizes direct rotation through the pressure difference of the driving spaces on the two sides of the fan blade, reduces intermediate conversion links, has a simple structure, and can be produced in batch.

Description

Rotary cylinder and motor-driven device

Technical Field

The invention relates to the field of mechanical power, in particular to a rotary cylinder and a motorized device.

Background

The development of artificial intelligence technology is leaps and bounds, but the research on the power mode of the robot is not developed in a breakthrough way for more than 20 years. The development of a service robot ASIMO as started in 1986 by the japan honda group has now been abandoned because the end execution force is insufficient and the work efficiency cannot be improved.

The robot Atlas of the Boston company in America can perform actions with high difficulty such as running and cooling, and the robot Atlas mainly adopts a hydraulic device for power, so that power output is greatly improved and the robot Atlas can be realized. The hydraulic cylinder used for the hydraulic cylinder is complex at present and is converted into angular motion through the linear motion of the hydraulic cylinder.

In addition, the joints of most of the robots are driven by matching a private motor with a harmonic reducer, so that the weight is large and the efficiency is required to be improved.

Disclosure of Invention

The invention aims to provide a rotary cylinder, which realizes a simple and efficient driving mode.

In order to solve the above technical problems, the present invention provides a rotary cylinder, which comprises an upper cover and a base assembly of a combined cover, and a rotary shaft, wherein at least a portion of the rotary shaft is disposed in a driving space formed by the upper cover and the base assembly, the rotary shaft has fan blades, and the driving space is divided into at least two mutually sealed portions by the fan blades and the rotary shaft.

Optionally, a first groove is formed in the upper cover, the base assembly comprises a base, a first fixing piece and a joint, a second groove is formed in the base, the first fixing piece penetrates through the base to be combined with the upper cover, the joint is arranged on the base and communicated with the first groove, each closed part at least corresponds to one joint, and the joints are connected with a hydraulic drive.

Optionally, the rotating shaft includes a cylindrical body and a fan blade protruding along a side surface, the first groove is matched with the outer edge of the fan blade by using the cross section of any plane where the axis of the rotating shaft is located, and the second groove is matched with at least one part of the outer edge of the cylindrical body by using the cross section of any plane where the axis of the rotating shaft is located.

Optionally, the rotating shaft includes a cylindrical body and two blades protruding along the side surface, one blade is arranged in the first groove in a matching manner, and the other blade is arranged in the second groove in a matching manner.

Optionally, the rotating shaft further comprises a sealing member disposed at a contact position of the rotating shaft and the driving space.

Optionally, the sealing member includes a first sealing member disposed in the sealing member mounting groove of the rotating shaft, and a second sealing member covering an edge of the sealing member mounting groove, in which the first sealing member is disposed, not lower than the sealing member mounting groove.

Optionally, a pair of opposite side walls of the first groove are provided with first notches, and a pair of opposite side walls of the second groove are provided with second notches.

Optionally, one side of the first notch, which is far away from the first groove, is stepped, and one side of the second notch, which is far away from the second groove, is stepped.

Optionally, the rotating shaft includes an output shaft, a bearing, a key, and a second fixing member, the output shaft is disposed at an end of the rotating shaft through the key and the second fixing member, the output shaft is further disposed in the bearing, and a portion of the output shaft between the rotating shaft and the bearing is disposed in the first notch and the second notch.

Furthermore, the invention also provides a motor device which comprises the rotating cylinder.

Compared with the prior art, the invention at least has the following beneficial effects: the rotary cylinder comprises an upper cover and a base assembly which are mutually covered, and a rotating shaft, wherein at least one part of the rotating shaft is arranged in a driving space formed by the upper cover and the base assembly, the rotating shaft is provided with fan blades, and the driving space is divided into at least two mutually closed parts by the fan blades and the rotating shaft. Therefore, the fan blade realizes direct rotation through the pressure difference of the driving spaces on the two sides of the fan blade, reduces intermediate conversion links, has a simple structure, and can be produced in batch.

Drawings

FIG. 1 is a first schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a schematic overall structure diagram II of an embodiment of the present invention;

FIG. 3 is an exploded view of a portion of one embodiment of the present invention;

FIG. 4 is an exploded view of a portion of the structure of an embodiment of the present invention;

FIG. 5 is a first schematic view of a rotating shaft structure according to an embodiment of the present invention;

FIG. 6 is a second schematic view of a rotating shaft structure according to an embodiment of the present invention;

FIG. 7 is an exploded view of a first shaft according to an embodiment of the present invention;

FIG. 8 is a third schematic view of a rotating shaft structure according to an embodiment of the present invention;

FIG. 9 is a fourth schematic view of a rotating shaft structure according to an embodiment of the present invention;

FIG. 10 is a first schematic structural view of a second seal according to an embodiment of the present invention;

FIG. 11 is a first schematic structural view of a first seal in accordance with one embodiment of the present invention;

FIG. 12 is an exploded view of a portion of a third embodiment of the present invention;

FIG. 13 is an exploded view of a portion of one embodiment of the present invention;

FIG. 14 is a fifth schematic view of a rotating shaft structure according to an embodiment of the present invention;

FIG. 15 is a sixth schematic view of a rotating shaft structure according to an embodiment of the present invention;

FIG. 16 is an exploded view of a second embodiment of a shaft according to the present invention;

FIG. 17 is a seventh schematic view of a rotating shaft structure according to an embodiment of the present invention;

FIG. 18 is a schematic view of an eighth embodiment of a rotating shaft structure of the present invention;

FIG. 19 is a second schematic structural view of a second seal in accordance with one embodiment of the present invention;

fig. 20 is a second schematic structural view of a first sealing member according to an embodiment of the present invention.

Detailed Description

The rotating cylinder and motorized apparatus of the present invention will now be described in greater detail with reference to the schematic drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art may modify the invention herein described while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

The embodiment of the invention provides a rotary cylinder, which comprises an upper cover and a base assembly of a combined cover and a rotating shaft, wherein at least one part of the rotating shaft is arranged in a driving space formed by the upper cover and the base assembly, the rotating shaft is provided with fan blades, and the driving space is divided into at least two mutually closed parts by the fan blades and the rotating shaft.

Therefore, the fan blade can deflect through different pressure differences on two sides of the driving space, so that the rotating shaft is driven to rotate, the structure is simple, the effect is direct, and batch production can be realized.

The following is a list of preferred embodiments of the rotary cylinder to clearly illustrate the contents of the present invention, and it should be understood that the contents of the present invention are not limited to the following embodiments, and other modifications by conventional technical means of those skilled in the art are also within the scope of the idea of the present invention.

Example 1

Referring to fig. 1-4, in an embodiment, a first groove 11 is formed in the upper cover 1, the base assembly 2 includes a base 21, a first fixing member 22, and a joint 23, a second groove 212 is formed in the base 21, the first fixing member 22 passes through a through hole 211 formed in the base 21 to be combined with the upper cover 1, the joint 23 is disposed on the base 21 and is connected to the first groove 11, each of the sealed portions corresponds to at least one of the joints 23, and the joint 23 is connected to a hydraulic drive.

For example, in one embodiment, two of the joints 23 may be located on opposite sides of the shaft 3.

The number of the joints 23 may be more, and it is not necessary to be particularly disposed on opposite sides of the rotating shaft 3, as long as it can be directly or indirectly communicated with the closed space divided by the fan blades.

Wherein, the first groove 11 and the second groove 212 can be semi-cylindrical, and in addition, other shapes are possible, for example, in one embodiment, the first groove 11 can be a combination of semi-cylindrical and hemispherical.

In one embodiment, the first groove 11 and the second groove 212 may have the same width in the axial direction of the rotating shaft 3, but have different lengths, and the length of the first groove 11 may be greater than the length of the second groove 212. It should be clear that, when the abutting surfaces of the upper cover 1 and the base assembly 2 are planes, the comparison of the sizes of the orthographic projections of the two planes is referred to herein.

It will be appreciated that the abutting surfaces of the cover 1 and base 2 are not limited to being planar, but may be other shapes.

The joint 23 is connected to an adjusting hole 213 of the base 21 to apply a required pressure to the driving space formed by the first recess 11 and the second recess 212, for example, the pressure may be generally hydraulic, and in some cases, the pressure may be pneumatic.

In one embodiment, referring to fig. 5 and 6, the shaft 3 includes a cylindrical body 31 and a fan blade 311 protruding along a side surface, the first groove 11 matches with an outer edge of the fan blade 311 by a cross section of any plane where the axis of the shaft 3 is located, and the second groove 212 matches with at least a portion of an outer edge of the cylindrical body 31 by a cross section of any plane where the axis of the shaft 3 is located.

That is, as shown in fig. 3, the cylindrical body 31 is disposed in the second groove 212 and sealed by a sealing member to achieve a close fit; and the fan blades 311 are arranged in the first groove 11, and are sealed by the tight fit of the sealing member. The fan blade 311 can swing in the first groove 11, and in the limit state, can be abutted against the base 21.

The shape of the blades 311 is preferably adapted to match the cross-section of the drive space, for example in one embodiment it may be a combination of rectangular and 1/4 circular, and correspondingly may have a chamfer to provide a better sealing effect.

With continuing reference to fig. 3 and fig. 4, a pair of opposite sidewalls 111 of the first groove 11 are both provided with a first notch 113, and the sidewalls 111 are stepped on a side of the first notch 113 away from the first groove 11, and have an accommodating space 112; a pair of opposite side walls 2121 of the second groove 212 are provided with second notches 2122, and the side walls 2121 are stepped on a side of the second notches 2122 away from the second groove 212 and have accommodating spaces 2123.

Referring to fig. 7, the rotating shaft 3 includes an output shaft 34, a bearing 35, a key 36 and a second fixing member 37, the output shaft 34 is disposed at an end of the rotating shaft 3 through the key 36 and the second fixing member 37, the output shaft 34 is further disposed in the bearing 35, as shown in fig. 3 and 4, the bearing 35 is disposed at a step of the

side wall

111, 2121, and a portion of the output shaft 34 between the rotating shaft 3 and the bearing 35 is disposed in the first notch 113 and the second notch 2122.

In one embodiment, an oilless bushing is also an option, in which case a stepped design may not be required.

The output shaft 34 may also adopt other types of structures, and a person skilled in the art can rotate the output shaft according to actual needs, and the above examples of the embodiment of the present invention should not be taken as limiting the present invention.

Referring to fig. 5 and 6, the shaft 3 further includes a sealing member disposed at a position where the shaft 3 contacts the driving space. Specifically, the sealing element is mainly arranged on a plane where the axis of the rotating shaft 3 is located.

Referring to fig. 8 to 11, the sealing member includes a first sealing member 33 and a second sealing member 32, the first sealing member 33 is disposed in a sealing member mounting groove 312 of the rotating shaft 3, and the second sealing member 32 covers an edge of the first sealing member 33 disposed in the sealing member mounting groove 312 and not lower than the sealing member mounting groove 312.

The packing installation groove 312 surrounds the cylindrical body 31 and the fan blades 311, for example, in a circle, and the packing installation groove 312 is rounded at the end of the cylindrical body 31 in consideration of the installation of the output shaft 34, so that the sealing of the rotating shaft at the output shaft 34 can be achieved.

In one embodiment, the first sealing member 33 has a circular cross-section, and the second sealing member 32 has a cross-section in a shape of a chevron, which may be considered as a shape of an E rotated 90 degrees counterclockwise. It should be noted that the cross-sectional shapes of the first seal 33 and the second seal 32 are not limited to this, and may be any other feasible shapes as long as sealing can be achieved.

In consideration of the shape of the packing installation groove 312, the first packing 33 has a circular washer 331 at a position corresponding to the packing installation groove 312, and likewise, the second packing 32 is also provided with a circular washer 321 at a position corresponding to the packing installation groove 312.

Through the arrangement of the first sealing element 33 and the second sealing element 32, the sealing between the upper cover and the base of the rotating shaft can be effectively realized.

Example 2

The structure of the present embodiment 2 is substantially the same as that of the embodiment 1, the same or similar structures will be denoted by the same reference numerals, and the description of the same parts will be omitted, please refer to fig. 1-2 and fig. 12-20.

In the present example, the main differences from example 1 are: the rotating shaft 3 includes a cylindrical body 31 and two blades 311 protruding along the side surface, one blade 311 is disposed in the first groove 11 in a matching manner, and the other blade 311 is disposed in the second groove 212 in a matching manner.

Accordingly, in the case that the cylindrical body 31 is not changed, the second groove 212 may have a larger space than that of embodiment 1 to match the fan blades 311.

In one embodiment, the two blades 311 are coplanar.

Accordingly, the shape of the sealing member is suitably changed to mainly surround the two fan blades 311 and both ends of the cylindrical body 31.

In addition, as in the present embodiment, another shape of the fan blade 311, that is, a rectangular shape having a chamfer is illustrated.

Example 3

This embodiment provides a motor apparatus, which may be a rotary apparatus including the rotary cylinder according to embodiment 1 or embodiment 2.

In one embodiment, the motorized device may be, for example, a robotic arm, an artificial joint, a prosthesis, a robot, or the like.

In summary, the rotary cylinder of the present invention includes an upper cover and a base assembly of a combined cover, and a rotating shaft, at least a portion of the rotating shaft is disposed in a driving space formed by the upper cover and the base assembly, the rotating shaft has fan blades, and the driving space is divided into at least two mutually sealed portions by the fan blades and the rotating shaft. Therefore, the fan blade realizes direct rotation through the pressure difference of the driving spaces on the two sides of the fan blade, reduces intermediate conversion links, has a simple structure, and can be produced in batch.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The rotary cylinder is characterized by comprising an upper cover and a base assembly which are mutually covered, and a rotating shaft, wherein at least one part of the rotating shaft is arranged in a driving space formed by the upper cover and the base assembly, the rotating shaft is provided with fan blades, and the driving space is divided into at least two mutually closed parts by the fan blades and the rotating shaft.

2. The rotary cylinder as claimed in claim 1, wherein said upper cover has a first recess formed therein, said base assembly includes a base having a second recess formed therein, a first fixing member passing through said base to be coupled to said upper cover, and a joint provided on said base and communicating with said first recess, each of said closed portions corresponding to at least one of said joints, said joint being connected to a hydraulic drive.

3. The rotary cylinder as claimed in claim 2, wherein the shaft includes a cylindrical body and a fan blade protruding along a side surface, the first groove matches an outer edge of the fan blade with a cross section of any plane on which the axis of the shaft is located, and the second groove matches at least a portion of an outer edge of the cylindrical body with a cross section of any plane on which the axis of the shaft is located.

4. The rotary cylinder as claimed in claim 2, wherein the shaft includes a cylindrical body and two laterally projecting leaves, one leaf matingly disposed in the first recess and the other leaf matingly disposed in the second recess.

5. The rotary cylinder as claimed in any one of claims 3 or 4, wherein the rotary shaft further comprises a sealing member provided where the rotary shaft contacts the driving space.

6. The rotary cylinder as claimed in claim 5, wherein the sealing member includes a first sealing member disposed in the sealing member mounting groove of the rotary shaft and a second sealing member covering an edge of the sealing member mounting groove, in which the first sealing member is disposed, not lower than the sealing member mounting groove.

7. The rotary cylinder as claimed in claim 2, wherein a first notch is provided on each of a pair of opposite side walls of the first groove, and a second notch is provided on each of a pair of opposite side walls of the second groove.

8. The rotary cylinder as claimed in claim 7, wherein the first indentation is stepped on a side thereof remote from the first recess and the second indentation is stepped on a side thereof remote from the second recess.

9. The rotary cylinder according to claim 7 or 8, wherein the rotary shaft includes an output shaft, a bearing, a key, and a second fixing member, the output shaft is disposed at an end portion of the rotary shaft through the key and the second fixing member, the output shaft is further disposed in the bearing, and a portion of the output shaft between the rotary shaft and the bearing is disposed in the first notch and the second notch.

10. A motorized device, characterised in that it comprises a rotating cylinder according to any one of claims 1-9.