CN114476129B - Space opening and closing mechanism - Google Patents
Space opening and closing mechanism Download PDFInfo
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- CN114476129B CN114476129B CN202210009788.7A CN202210009788A CN114476129B CN 114476129 B CN114476129 B CN 114476129B CN 202210009788 A CN202210009788 A CN 202210009788A CN 114476129 B CN114476129 B CN 114476129B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 56
- 230000009471 action Effects 0.000 claims description 12
- 238000005485 electric heating Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000002861 polymer material Substances 0.000 claims description 6
- 229920000431 shape-memory polymer Polymers 0.000 claims description 6
- 230000006870 function Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Abstract
The invention provides a space opening and closing mechanism, which comprises a first structural member; and a second structural member rotatably connected to the first structural member; an elastic component for providing unfolding power is arranged between the first structural component and the second structural component; the first structural member includes an open position and a closed position; the space opening and closing mechanism further comprises a fixing piece used for fixing the elastic piece and the second structural piece; and a pusher for pushing the first structural member from the open position to the closed position; the fixing piece is configured to not fix the elastic piece and the second structural piece when the pushing piece pushes the first structural piece, and the first structural piece can drive the elastic piece to move so that the elastic piece is separated from the second structural piece. The space opening and closing mechanism can realize the functions of quick opening and slow closing, and can reduce the interference to released products and space products. The space opening and closing mechanism is simple in structure, light in weight and strong in space environment adaptability, and required rigidity and strength can be achieved under various working conditions.
Description
Technical Field
The invention relates to the technical field of aerospace. And more particularly to a spatial opening and closing mechanism.
Background
Space products (e.g., satellites) in orbit are subject to complex environments, and therefore a closed space product needs to be closed after being partially opened to restore the closed environment, i.e., to restore heat and radiation protection. Typical products such as cube star releasing devices, space air bag releasing devices and the like need to realize the functions of quick opening (reducing the influence on the releasing process of released products) and slow closing (reducing the disturbance on the on-orbit running of a space product main body) of an opening and closing mechanism (such as a cabin door, a cover door and the like).
To achieve opening and closing, common schemes include motor-coupling control, motor-gear/cam/lever system mechanism control, hydraulic/pneumatic mechanism control, and the like. These approaches have some drawbacks in the context of release applications on micro-nano satellites: 1) The mechanism is complex, and the performance of each link needs to be improved to improve the reliability; 2) The mechanism occupies large space and has large weight.
Disclosure of Invention
In view of the above, the present invention provides a space opening and closing mechanism to solve at least one of the technical problems mentioned in the background section.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides a space opening and closing mechanism, comprising:
a first structural member; and
the second structural member is rotatably connected with the first structural member;
an elastic element for providing unfolding power is arranged between the first structural member and the second structural member;
the first structural member includes an open position and a closed position;
the space opening and closing mechanism further comprises a fixing piece used for fixing the elastic piece and the second structural piece; and a pusher for pushing the first structural member from the open position to the closed position;
the fixing piece is configured to not fix the elastic piece and the second structural piece when the pushing piece pushes the first structural piece, and the first structural piece can drive the elastic piece to move so that the elastic piece is separated from the second structural piece.
In addition, preferably, the first structural member is connected with the second structural member through a rotating shaft, the elastic piece is sleeved on the rotating shaft and is a torsion spring, the torsion spring comprises a torsion arm and two supporting legs, and the torsion arm is positioned between the two supporting legs.
In addition, preferably, the second structural member comprises a limit boss, the limit boss comprises a groove formed by inwards sinking the bottom wall surface of the limit boss, and the groove penetrates through the side wall surface of the limit boss far away from the second structural member;
the second structural member also comprises a fixing boss corresponding to the limiting boss; the fixing piece is positioned between the limiting boss and the fixing boss; the top wall of the fixing piece is matched with the groove of the limiting boss to form a fixing hole for inserting the supporting leg of the torsion spring.
In addition, preferably, the fixing piece is made of shape memory polymer material, and an electric heating plate is adhered to the fixing piece.
In addition, preferably, when the first structural member moves from the closed position to the open position, the vertical section of the fixing member is in a straight shape; when the first structural member moves from the opening position to the closing position, the vertical section of the fixing member is L-shaped.
In addition, preferably, the pushing piece is made of shape memory polymer material and is adhered with an electric heating plate;
the first structural member comprises an action column extending outwards; the pushing piece is in abutting fit with the action column to push the first structural part from the opening position to the closing position.
Furthermore, it is preferable that the vertical section of the pusher is rectangular when the first structural member is moved from the closed position to the open position; the vertical cross section of the pusher member is arcuate when the first structural member is moved from the open position to the closed position.
In addition, preferably, the second structural member comprises two limit bosses which are symmetrically arranged and two fixing bosses which are symmetrically arranged;
the space opening and closing mechanism comprises two fixing pieces which are respectively fixed between the limiting boss and the fixing boss, and two pushing pieces which are configured on the rotating shaft.
In addition, preferably, the second structural member comprises a limiting part for limiting the first structural member in the opening position.
Furthermore, it is preferred that the angle between the first structural member and the second structural member is 180 ° when the first structural member is in the open position.
The beneficial effects of the invention are as follows:
the space opening and closing mechanism provided by the invention can realize the functions of quick opening and slow closing, and can reduce the interference to released products and space products. In addition, the space opening and closing mechanism is simple in structure, does not need to be assembled with complex structures such as a motor, can improve working reliability, saves installation space, is lighter in weight and strong in space environment adaptability, and can achieve required rigidity and strength under various working conditions.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the drawings.
Fig. 1 is a schematic structural view of the space opening and closing mechanism of the present invention in an initial state.
Fig. 2 is a schematic structural view of a second structural member of the present invention.
Fig. 3 is a partial cross-sectional view of a second structural member of the present invention.
Fig. 4 is a schematic view of the structure of the space opening and closing mechanism of the present invention when opened.
Fig. 5 is a schematic view of the structure of the space opening and closing mechanism of the present invention when closed.
Fig. 6 is a partial sectional view of the spatial opening and closing mechanism of the present invention when closed.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In order to achieve the functions of quick opening and slow closing and reduce the interference to the released product and the space product, the invention provides a space opening and closing mechanism, which is shown in combination with fig. 1 to 6, and specifically comprises: a first structural member 1; and a second structural member 2 rotatably connected to the first structural member 1; an elastic component for providing unfolding power is arranged between the first structural component 1 and the second structural component 2; the first structural member 1 comprises an open position and a closed position; the space opening and closing mechanism further comprises a fixing piece 5 used for fixing the elastic piece and the second structural piece 2; and a pusher 6 for pushing the first structural member 1 from the open position to the closed position; the fixing member 5 is configured such that when the pushing member 6 pushes the first structural member 1, the fixing member 5 no longer fixes the elastic member to the second structural member 2, and the first structural member 1 can move the elastic member to separate the elastic member from the second structural member 2. Referring to fig. 1, the space opening and closing mechanism is a housing with a receiving cavity, a released product is received in the receiving cavity, the housing includes a top wall, a bottom wall and a side wall integrally formed with the bottom wall, the top wall is hinged with a side wall, in this embodiment, the top wall is a first structural member 1, the bottom wall and the side wall integrally formed with the bottom wall are second structural members 2, the first structural member 1 plays a role of opening and closing the release, and the second structural member 2 is used for fixing with a space product.
It will be appreciated that when the fixing element 5 no longer fixes the elastic element to the second structural element 2, the elastic element can move with the first structural element 1 under the pushing of the pushing element 6, and further separate from the second structural element 2, and the pushing element 6 pushes the first structural element 1 from the open position to the closed position; the space opening and closing mechanism comprises an initial state, wherein the space opening and closing mechanism is closed in the initial state, namely, a first structural member 1 and a second structural member 2 of the space opening and closing mechanism are mutually closed; the first structural member 1 is movable from a closed position to an open position and from the open position to the closed position; the above-mentioned open position refers to a position where the first structural member 1 is turned 180 ° counterclockwise from the closed position, and at this time, an angle between the first structural member 1 and the second structural member 2 is 180 °; the closed position refers to a position where the first structural member 1 is turned clockwise 180 ° from the open position, and at this time, the first structural member 1 is attached to the second structural member 2.
In a specific embodiment, the first structural member 1 is connected with the second structural member 2 through a rotating shaft 3, the elastic member is sleeved on the rotating shaft 3, the elastic member is a torsion spring 4, the torsion spring 4 comprises a torsion arm and two supporting legs, the torsion arm is located between the two supporting legs, the torsion arm of the torsion spring 4 acts on the first structural member 1, the two supporting legs of the torsion spring 4 are limited and fixed by a limiting boss 22 and a fixing member 5, the second structural member 2 further comprises a rotating shaft boss 21, the rotating shaft boss 21 is used for fixing the rotating shaft 3 on the second structural member 2, the rotating shaft 3 is connected with the second structural member 2 and keeps fixed, and the rotating shaft 3 provides support for the first structural member 1 and the torsion spring 4.
Further, the second structural member 2 includes a limiting boss 22, the limiting boss 22 includes a groove formed by inward recessing of a bottom wall surface of the limiting boss 22, and the groove penetrates through a side wall surface of the limiting boss 22 far away from the second structural member 2; the second structural member 2 also comprises a fixing boss 23 corresponding to the limit boss 22; the fixing piece 5 is positioned between the limit boss 22 and the fixing boss 23; the top wall of the fixing piece 5 is matched with the groove of the limit boss 22 to form a fixing hole for inserting the supporting leg of the torsion spring 4; the limiting boss 22, the fixing boss 23 and the fixing member 5 all comprise mounting holes for assembling the fixing member 5 between the limiting boss 22 and the fixing boss 23.
Referring to fig. 2, a limit boss 22 on the second structural member 2 is used to match with the fixing member 5 to control whether the torsion spring 4 is fixed or not, and in this specific example, a groove on the limit boss 22 is used to match with the fixing member 5 to control the torsion spring 4, as will be understood by those skilled in the art, the shape of the groove is determined according to the actual situation; the fixing boss 23 is used to match with the limit boss 22 so that the fixing member 5 is fixed to the second structural member 2.
In a specific embodiment, the fixing member 5 is made of a shape memory polymer material, and an electric heating plate is adhered to the fixing member 5, and the shape of the fixing member 5 can be changed by heating the heating plate, so that the fixing or releasing of the leg of the torsion spring 4 is realized.
In this embodiment, when the first structural member 1 moves from the closed position to the open position, the vertical section of the fixing member 5 is in a straight shape; when the first structural member 1 is moved from the open position to the closed position, the fixing member 5 has an L-shaped vertical cross section. The fixing piece 5 does not work before and when the space opening and closing mechanism is opened, and begins to work to deform when the space opening and closing mechanism needs to be closed so as to release the fixing of the support legs of the torsion springs 4; that is, the fixing piece 5 is in a straight shape before and when the space opening and closing mechanism is opened, the supporting leg of the torsion spring 4 is fixed in the fixing hole, the fixing piece 5 starts to work to deform into an L shape when the space opening and closing mechanism needs to be closed, the fixing of the supporting leg of the torsion spring 4 is released, and the appearance of the fixing piece 5 can be determined according to actual conditions on the premise that the normal work of the fixing piece 5 is not influenced.
In a specific embodiment, the pushing member 6 is made of a shape memory polymer material, and an electric heating plate is adhered to the pushing member 6; the shape of the pushing piece 6 can be changed by heating the heating piece, so that the pushing of the first structural piece 1 is realized; with respect to a specific push-fit manner, the first structural member 1 includes an outwardly extending action post 11 thereon; the pushing member 6 is in abutting engagement with the action post 11 to push the first structural member 1 from the open position to the closed position, it being understood that the shape of the action post 11 is determined according to the actual circumstances, and the invention is not limited thereto.
Further, when the first structural member 1 is moved from the closed position to the open position, the pushing member 6 has a rectangular vertical section; when the first structural member 1 moves from the open position to the closed position, the vertical section of the pushing member 6 is arc-shaped; more specifically, the vertical section of the pushing piece 6 is rectangular before and when the space opening and closing mechanism is opened, and when the space opening and closing mechanism is to be closed, the pushing piece 6 begins to work and deform into a curved arc shape, and the appearance of the pushing piece 6 is determined according to actual conditions; that is, the pushing member 6 is fixedly connected to the rotating shaft 3, does not work before and when the space opening and closing mechanism is opened, and works when the opening and closing mechanism needs to be closed, and acts on the acting column 11 on the first structural member 1 to enable the first structural member 1 to rotate to be closed around the rotating shaft 3.
In order to improve the stability of the space opening and closing mechanism, the second structural member 2 comprises two limit bosses 22 which are symmetrically arranged and two fixing bosses 23 which are symmetrically arranged; the space opening and closing mechanism comprises two fixing pieces 5 respectively fixed between the limiting boss 22 and the fixing boss 23, and two pushing pieces 6 arranged on the rotating shaft 3. The advantage is that two pushing pieces 6 are selected, two action columns 11 are processed on the first structural member 1 at the same time, each group of pushing pieces 6 and the action columns 11 are independently controlled and work at the same time, the pushing pieces and the action columns are mutually backup, and the reliability in closing is improved.
In a specific embodiment, the second structural member 2 includes a limiting portion 24 for limiting the first structural member 1 in the open position, and the limiting portion 24 is used for limiting the opening angle of the first structural member 1, and it will be understood by those skilled in the art that the opening angle is determined according to actual needs, and the opening angle can be adjusted by modifying the shape of the limiting portion 24. In addition, when the first structural member 1 is in the open position, the angle between the first structural member 1 and the second structural member 2 is 180 °, that is, the opening angle of the space opening and closing mechanism is 180 ° in this specific example.
In actual use, before the space opening and closing mechanism is opened, the torsion arm of the torsion spring 4 acts on the first structural member 1, the support legs are limited by the limiting boss 22 and the fixing piece 5 and are kept fixed with the second structural member 2, and at the moment, the torsion spring 4 is in a torsion deformation state to provide rotation torque for opening the opening and closing mechanism, as shown in fig. 1; when the space opening and closing mechanism is opened, the torsion spring 4 enables the first structural member 1 to rotate around the rotating shaft 3 to be opened quickly, the limiting part 24 limits the first structural member when the first structural member reaches the opening limiting angle, and the action column 11 is in contact with the pushing piece 6 at the moment, as shown in fig. 4; after the first structural member 1 is opened quickly, the corresponding product release is completed; when the space opening and closing mechanism is closed, the fixing piece 5 works first, and the fixing piece 5 is heated to deform to release the limit on the torsion spring 4 so that the torsion spring can rotate around the rotating shaft 3; then the pushing member 6 starts to work, the pushing member 6 is deformed by heating, and the first structural member 1 is driven to rotate around the rotating shaft 3 by the action column 11 to be slowly closed, as shown in fig. 5 and 6.
In summary, the space opening and closing mechanism provided by the invention can realize the functions of quick opening and slow closing, and can reduce the interference to the released products and space products. In addition, the space opening and closing mechanism is simple in structure, does not need to be assembled with complex structures such as a motor, can improve working reliability, saves installation space, is lighter in weight and strong in space environment adaptability, and can achieve required rigidity and strength under various working conditions.
It should be understood that the foregoing examples of the present invention are provided merely for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (9)
1. A spatial opening and closing mechanism, comprising:
a first structural member; and
the second structural member is rotatably connected with the first structural member;
an elastic element for providing unfolding power is arranged between the first structural member and the second structural member;
the first structural member includes an open position and a closed position;
the space opening and closing mechanism further comprises a fixing piece used for fixing the elastic piece and the second structural piece; and a pusher for pushing the first structural member from the open position to the closed position;
the fixing piece is configured to not fix the elastic piece and the second structural piece when the pushing piece pushes the first structural piece, and the first structural piece can drive the elastic piece to move so that the elastic piece is separated from the second structural piece;
the fixing piece is made of a shape memory polymer material, and the fixing piece is adhered with an electric heating piece, and the shape of the fixing piece can be changed by heating the electric heating piece, so that the fixing piece can not fix the elastic piece and the second structural piece any more;
the pushing piece is made of shape memory polymer materials, an electric heating piece is bonded on the pushing piece, and the shape of the pushing piece can be changed through heating of the electric heating piece, so that pushing of the first structural piece is achieved.
2. The spatial opening and closing mechanism according to claim 1, wherein the first structural member and the second structural member are connected through a rotating shaft, the elastic member is sleeved on the rotating shaft, the elastic member is a torsion spring, the torsion spring comprises a torsion arm and two supporting legs, and the torsion arm is located between the two supporting legs.
3. The space switching mechanism according to claim 2, wherein the second structural member includes a limiting boss, the limiting boss includes a recess formed by inward recessing of a bottom wall surface of the limiting boss, and the recess penetrates a side wall surface of the limiting boss, which is far away from the second structural member;
the second structural member also comprises a fixing boss corresponding to the limiting boss; the fixing piece is positioned between the limiting boss and the fixing boss; the top wall of the fixing piece is matched with the groove of the limiting boss to form a fixing hole for inserting the supporting leg of the torsion spring.
4. The spatial opening and closing mechanism according to claim 1, wherein the fixing member has a vertical cross section in a straight shape when the first structural member moves from the closed position to the open position; when the first structural member moves from the opening position to the closing position, the vertical section of the fixing member is L-shaped.
5. The spatial opening and closing mechanism according to claim 1, wherein the first structural member includes an outwardly extending action post thereon; the pushing piece is in abutting fit with the action column to push the first structural part from the opening position to the closing position.
6. The space switching mechanism of claim 5, wherein the pusher has a rectangular vertical cross-section when the first structural member is moved from the closed position to the open position; the vertical cross section of the pusher member is arcuate when the first structural member is moved from the open position to the closed position.
7. The space switching mechanism according to claim 2, wherein the second structural member includes two symmetrically disposed limiting bosses and two symmetrically disposed fixing bosses;
the space opening and closing mechanism comprises two fixing pieces which are respectively fixed between the limiting boss and the fixing boss, and two pushing pieces which are configured on the rotating shaft.
8. The spatial opening and closing mechanism according to claim 1, wherein the second structural member includes a limiting portion for limiting the first structural member in the open position.
9. The space switching mechanism of claim 1, wherein the angle between the first structural member and the second structural member is 180 ° when the first structural member is in the open position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210009788.7A CN114476129B (en) | 2022-01-05 | 2022-01-05 | Space opening and closing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210009788.7A CN114476129B (en) | 2022-01-05 | 2022-01-05 | Space opening and closing mechanism |
Publications (2)
| Publication Number | Publication Date |
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| CN114476129A CN114476129A (en) | 2022-05-13 |
| CN114476129B true CN114476129B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210009788.7A Active CN114476129B (en) | 2022-01-05 | 2022-01-05 | Space opening and closing mechanism |
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| Country | Link |
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| CN (1) | CN114476129B (en) |
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| US4706330A (en) * | 1985-02-20 | 1987-11-17 | Ronald Sampson | Automatic closing activator |
| JPH08102605A (en) * | 1994-10-03 | 1996-04-16 | Natl Space Dev Agency Japan<Nasda> | Device for storing and expanding antenna |
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| CN109398761A (en) * | 2018-10-31 | 2019-03-01 | 北京宇航系统工程研究所 | Connection unlocking mechanism based on marmem triggering |
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| CN111764806A (en) * | 2020-08-02 | 2020-10-13 | 冯沛兴 | Fire window capable of being automatically closed |
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| CN113339393A (en) * | 2021-07-16 | 2021-09-03 | 东莞市环力智能科技有限公司 | Mobile terminal and accessory equipment rotating shaft structure thereof |
| CN215043818U (en) * | 2021-01-05 | 2021-12-07 | 航天科工空间工程发展有限公司 | Unfolding mechanism |
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2022
- 2022-01-05 CN CN202210009788.7A patent/CN114476129B/en active Active
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| CN114476129A (en) | 2022-05-13 |
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