CN114476129A - Space opening and closing mechanism - Google Patents
Space opening and closing mechanism Download PDFInfo
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- CN114476129A CN114476129A CN202210009788.7A CN202210009788A CN114476129A CN 114476129 A CN114476129 A CN 114476129A CN 202210009788 A CN202210009788 A CN 202210009788A CN 114476129 A CN114476129 A CN 114476129A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 60
- 230000009471 action Effects 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 6
- 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 6
- 238000005485 electric heating Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 108091092878 Microsatellite Proteins 0.000 description 1
- 230000009286 beneficial effect 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
- 230000008569 process Effects 0.000 description 1
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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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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 part for providing unfolding power is arranged between the first structural part and the second structural part; the first structural member includes an open position and a closed position; the space opening and closing mechanism also 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 be not used for fixing 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 on 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 can achieve required rigidity and strength under various working conditions.
Description
Technical Field
The invention relates to the technical field of spaceflight. And more particularly, to a space opening and closing mechanism.
Background
Space products flying in orbit (such as satellites) are subjected to complex environments, so that a closed space product needs to be closed after being partially opened to restore the closed environment, namely, the protection functions of heat, radiation and the like are restored. Typical products such as cube star release devices, space airbag release devices and the like need to realize the functions of quick opening (reducing the influence on the release process of released products) and slow closing (reducing the disturbance on the in-orbit running of space product main bodies) of opening and closing mechanisms (such as hatches, cover doors and the like).
Common schemes for achieving opening and closing include motor-coupling control, motor-gear/cam/lever system mechanism control, hydraulic/pneumatic mechanism control, and the like. These solutions have some drawbacks in the release applications on the microsatellite: 1) the mechanism is complex, and the performance of each link needs to be improved so as to improve the reliability; 2) the mechanism occupies a large space and has a large weight.
Disclosure of Invention
In view of the above problems, the present invention provides a spatial opening and closing mechanism to solve at least one of the technical problems mentioned in the background section above.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a space opening and closing mechanism, comprising:
a first structural member; and
a second structural member rotatably connected to the first structural member;
an elastic part for providing unfolding power is arranged between the first structural part and the second structural part;
the first structure comprises an open position and a closed position;
the space opening and closing mechanism also 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 be not used for fixing 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 member is sleeved on the rotating shaft, the elastic member is a torsion spring, the torsion spring comprises a torsion arm and two support legs, and the torsion arm is located between the two support legs.
In addition, preferably, the second structural member comprises a limiting boss, the limiting boss comprises a groove formed by inwards recessing the surface of the bottom wall of the limiting boss, and the groove penetrates through the surface of the side wall of the limiting boss far away from the second structural member;
the second structural part also comprises a fixed boss corresponding to the limit 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 support leg of the torsion spring.
In addition, preferably, the fixing member is made of shape memory polymer material, and an electric heating sheet is bonded on the fixing member.
In addition, it is preferable that, 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 line shape; when the first structural member moves from the open position to the closed position, the vertical section of the fixing piece is L-shaped.
In addition, preferably, the pushing member is made of shape memory polymer material, and an electric heating sheet is bonded on the pushing member;
the first structural member comprises an action column extending outwards; the pushing piece is in butt fit with the action column to push the first structural member from the opening position to the closing position.
Furthermore, it is preferred that the pusher has a rectangular vertical cross-section when the first structural member moves from the closed position to the open position; the pusher has an arcuate vertical cross-section when the first structure moves from the open position to the closed position.
In addition, preferably, the second structural member comprises two symmetrically arranged limiting bosses and two symmetrically arranged fixing bosses;
the space opening and closing mechanism comprises two fixing pieces and two pushing pieces, wherein the two fixing pieces are respectively fixed between the limiting boss and the fixing boss, and the two pushing pieces are arranged on the rotating shaft.
In addition, preferably, the second structural member includes a limiting portion for limiting the position of the first structural member in the open position.
Furthermore, it is preferred that the angle between the first and second structural elements is 180 ° when the first structural element 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 on released products and space products. In addition, the space opening and closing mechanism is simple in structure, complex structures such as a motor do not need to be assembled, the working reliability can be improved, the installation space is saved, the product weight is lighter, the space environment adaptability is strong, and the required rigidity and strength can be achieved under various working conditions.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying 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 view of a second structural member of the present invention.
Figure 3 is a partial cross-sectional view of a second structural member of the present invention.
Fig. 4 is a schematic structural view of the space opening and closing mechanism of the present invention when opened.
Fig. 5 is a schematic structural view of the space opening and closing mechanism of the present invention when closed.
Fig. 6 is a partial sectional view of the space 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, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In order to realize 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 a combined manner in 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 part for providing unfolding power is arranged between the first structural part 1 and the second structural part 2; the first structural element 1 comprises an open position and a closed position; the space opening and closing mechanism also comprises a fixing part 5 used for fixing the elastic part and the second structural part 2; and a pusher 6 for pushing the first structural member 1 from the open position to the closed position; the fixing part 5 is configured such that when the pushing part 6 pushes the first structural part 1, the fixing part 5 no longer fixes the elastic part and the second structural part 2, and the first structural part 1 can drive the elastic part to move so that the elastic part is separated from the second structural part 2. Referring to fig. 1, the space opening and closing mechanism is a housing having a receiving cavity, the 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 to the 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 a second structural member 2, the first structural member 1 plays a role in opening and closing and releasing, and the second structural member 2 is used for being fixed with the space product.
It can be understood that, when the fixing part 5 no longer fixes the elastic part and the second structural part 2, the elastic part can move with the first structural part 1 under the pushing of the pushing part 6, and further separate from the second structural part 2, and the pushing part 6 pushes the first structural part 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 part 1 and a second structural part 2 of the space opening and closing mechanism are mutually closed; the first structural member 1 can move from a closed position to an open position and then from the open position to the closed position; the above-mentioned opening position refers to a position where the first structural member 1 is turned 180 ° counterclockwise from the closing 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 in which the first structural element 1 is turned 180 ° clockwise from the open position, and the first structural element 1 is attached to the second structural element 2.
In a specific embodiment, first structure 1 with second structure 2 is connected through pivot 3, the elastic component suit is in pivot 3, the elastic component is torsional spring 4, torsional spring 4 is including torque arm and two landing legs, the torque arm is located between two landing legs, and the torque arm of torsional spring 4 acts on first structure 1, and two landing legs of torsional spring 4 receive spacing boss 22 and the spacing of mounting 5 fixed, still includes pivot boss 21 on second structure 2, and pivot boss 21 is used for being fixed in second structure 2 with pivot 3 on, and pivot 3 is connected and keeps the rigid with second structure 2, and pivot 3 provides the support for first structure 1 and torsional 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 the bottom wall surface of the limiting boss 22, and the groove penetrates through the side wall surface of the limiting boss 22 far away from the second structural member 2; the second structural part 2 also comprises a fixed boss 23 corresponding to the limit boss 22; the fixing piece 5 is positioned between the limiting boss 22 and the fixing boss 23; the top wall of the fixing piece 5 is matched with the groove of the limiting 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 each include a mounting hole for mounting the fixing member 5 between the limiting boss 22 and the fixing boss 23.
Referring to fig. 2, the limiting boss 22 on the second structural member 2 is used for matching with the fixing member 5 to control whether the torsion spring 4 is fixed or not, and in the present specific example, the groove on the limiting boss 22 is used for matching with the fixing member 5 to control the torsion spring 4, it can be understood by those skilled in the art that the shape of the groove is determined according to actual conditions; the fixing boss 23 is used to match with the position-limiting boss 22 so that the fixing member 5 is fixed on 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 sheet is bonded on the fixing member 5, and the shape of the fixing member 5 can be changed by heating the heating sheet, so as to fix or release the leg of the torsion spring 4.
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 moves from the open position to the closed position, the vertical section of the fixing member 5 is L-shaped. The fixing piece 5 does not work before and when the space opening and closing mechanism is opened, and starts to work to deform when the space opening and closing mechanism needs to be closed so as to release the fixation of the support legs of the torsion spring 4; that is, the fixing member 5 is in a straight shape before the space opening and closing mechanism is opened and when the space opening and closing mechanism is opened, the support legs of the torsion spring 4 are fixed in the fixing holes, the fixing member 5 starts to work and deforms to become an L shape when the space opening and closing mechanism needs to be closed, the fixing of the support legs of the torsion spring 4 is released, and the appearance of the fixing member 5 can be determined according to actual conditions on the premise that the normal work of the fixing member 5 is not affected.
In a specific embodiment, the pushing member 6 is a shape memory polymer material and the pushing member 6 is adhered with an electric heating sheet; the shape of the pushing piece 6 can be changed by heating the heating sheet, so that the first structural member 1 is pushed; in terms of a specific push fit manner, the first structural member 1 comprises an action column 11 extending outwards; the pushing member 6 is in abutting engagement with the action column 11 to push the first structural member 1 from the open position to the closed position, and it is understood that the shape of the action column 11 is determined according to practical situations, and the invention is not limited thereto.
Further, when the first structural member 1 moves from the closed position to the open position, the vertical section of the pusher 6 is rectangular; 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, the pushing piece starts to work and deform to be a bent arc when the space opening and closing mechanism is closed, 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 space opening and closing mechanism needs to be closed, and acts on the acting column 11 on the first structural member 1, so that the first structural member 1 rotates around the rotating shaft 3 to be closed.
In order to improve the stability of the space opening and closing mechanism, the second structural member 2 comprises two symmetrically arranged limiting bosses 22 and two symmetrically arranged fixing bosses 23; the space opening and closing mechanism comprises two fixing pieces 5 respectively fixed between a limiting boss 22 and a fixing boss 23, and two pushing pieces 6 arranged on the rotating shaft 3. The structure has the advantages that two pushing pieces 6 are selected, two action columns 11 are machined on the first structural member 1, each group of pushing pieces 6 and action columns 11 are independently controlled and work simultaneously, and are mutually backed up, so that the reliability in closing is improved.
In a specific embodiment, the second structural member 2 includes a position-limiting portion 24 for limiting the position of the first structural member 1 in the open position, and the position-limiting portion 24 is used for limiting the opening angle of the first structural member 1. 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 open angle of the space opening and closing mechanism is 180 ° in this specific example.
In practical use, before the space opening and closing mechanism is opened, the torque arm of the torsion spring 4 acts on the first structural component 1, the support leg is limited by the limiting boss 22 and the fixing component 5 and is kept fixed with the second structural component 2, and at the moment, the torsion spring 4 is in a torsional deformation state and provides a rotating torque for opening the opening and closing mechanism, which is 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 rapidly, after the space opening and closing mechanism reaches an opening limited angle, the limiting part 24 limits the space opening and closing mechanism, and at the moment, the action column 11 is in contact with the pushing piece 6, which is shown in fig. 4; after the first structural member 1 is rapidly opened, the corresponding product release is completed; when the space opening and closing mechanism is closed, the fixing piece 5 works firstly, and the fixing piece 5 is heated to deform so as to remove the limitation on the torsion spring 4 and enable the torsion spring to rotate around the rotating shaft 3; next, the pushing element 6 starts to work, and the pushing element 6 is deformed by heat and slowly closed by the action column 11 driving the first structural member 1 to rotate around the rotating shaft 3, 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 on the released product and the space product. In addition, the space opening and closing mechanism is simple in structure, complex structures such as a motor do not need to be assembled, the working reliability can be improved, the installation space is saved, the product weight is lighter, the space environment adaptability is strong, and the required rigidity and strength can be achieved under various working conditions.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. A spatial opening and closing mechanism, comprising:
a first structural member; and
a second structural member rotatably connected to the first structural member;
an elastic part for providing unfolding power is arranged between the first structural part and the second structural part;
the first structure comprises an open position and a closed position;
the space opening and closing mechanism also 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 be not used for fixing 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.
2. The spatial mechanism of claim 1, wherein the first structure is connected to the second structure via a shaft, the elastic member is sleeved on the shaft, the elastic member is a torsion spring, the torsion spring includes a torsion arm and two legs, and the torsion arm is located between the two legs.
3. The spatial opening and closing mechanism according to claim 2, wherein the second structural member comprises a limiting boss, the limiting boss comprises a groove formed by inward recessing of the surface of the bottom wall of the limiting boss, and the groove penetrates through the surface of the side wall of the limiting boss far away from the second structural member;
the second structural part also comprises a fixed boss corresponding to the limit 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 support leg of the torsion spring.
4. The spatial mechanism of claim 1, wherein the fixture is a shape memory polymer material and the electrical heating plate is bonded to the fixture.
5. The spatial mechanism of claim 4, wherein the vertical cross-section of the fixed member is 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 open position to the closed position, the vertical section of the fixing piece is L-shaped.
6. The spatial mechanism of claim 1, wherein the pusher is a shape memory polymer material and has an electrical heating plate bonded thereto;
the first structural member comprises an action column extending outwards; the pushing piece is in butt fit with the action column to push the first structural member from the opening position to the closing position.
7. The space switching mechanism according to claim 6, wherein the vertical cross-section of the pushing member is rectangular when the first structural member moves from the closed position to the open position; the pusher has an arcuate vertical cross-section when the first structure moves from the open position to the closed position.
8. The space opening and closing mechanism according to claim 2, wherein the second structural member comprises two symmetrically arranged limiting bosses and two symmetrically arranged fixing bosses;
the space opening and closing mechanism comprises two fixing pieces and two pushing pieces, wherein the two fixing pieces are respectively fixed between the limiting boss and the fixing boss, and the two pushing pieces are arranged on the rotating shaft.
9. The spatial mechanism of claim 1, wherein the second structure includes a stop portion for stopping the first structure in the open position.
10. The spatial mechanism of claim 1, wherein the angle between the first structure and the second structure is 180 ° when the first structure 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 |
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| Publication Number | Publication Date |
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| CN114476129A true CN114476129A (en) | 2022-05-13 |
| CN114476129B CN114476129B (en) | 2024-03-19 |
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| CN202210009788.7A Active CN114476129B (en) | 2022-01-05 | 2022-01-05 | Space opening and closing mechanism |
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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 |
| CN107933964A (en) * | 2017-11-16 | 2018-04-20 | 北京宇航系统工程研究所 | A kind of anti-rebound port cover structure of in-orbit Automatic-expanding |
| 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 |
| CN109466797A (en) * | 2018-12-04 | 2019-03-15 | 航天科工空间工程发展有限公司 | A kind of space air bag release device |
| CN111764806A (en) * | 2020-08-02 | 2020-10-13 | 冯沛兴 | Fire window capable of being automatically closed |
| CN112124630A (en) * | 2020-08-20 | 2020-12-25 | 山东航天电子技术研究所 | Cube star connection and separation device |
| 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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| CN114476129B (en) | 2024-03-19 |
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