CN110155373A - A kind of cancellation element of folding and unfolding mechanism junction radial clearance - Google Patents
A kind of cancellation element of folding and unfolding mechanism junction radial clearance Download PDFInfo
- Publication number
- CN110155373A CN110155373A CN201910501549.1A CN201910501549A CN110155373A CN 110155373 A CN110155373 A CN 110155373A CN 201910501549 A CN201910501549 A CN 201910501549A CN 110155373 A CN110155373 A CN 110155373A
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- shaft
- pin hole
- folding
- unfolding mechanism
- radial clearance
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- 230000007246 mechanism Effects 0.000 title claims abstract description 34
- 239000011159 matrix material Substances 0.000 claims abstract description 22
- 230000008030 elimination Effects 0.000 abstract description 3
- 238000003379 elimination reaction Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001360 synchronised effect 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
- B64G1/222—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles for deploying structures between a stowed and deployed state
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
A kind of cancellation element of folding and unfolding mechanism junction radial clearance belongs to space mechanism's expansion, connection locking and release tech field.The present invention is in order to solve the problems, such as influence of the radial clearance after existing lock is fixed between matrix and expansion part to the reliability and stability of folding and unfolding mechanism.A kind of cancellation element of folding and unfolding mechanism junction radial clearance of the invention, the gap after expandable member locks between expandable member and shaft, expandable member side and base member medial surface can be effectively eliminated while guaranteeing that expandable member is smoothly unfolded, avoid gap to the rigidity of folding and unfolding mechanism and the influence of fundamental frequency, to influence the anti-interference ability of folding and unfolding mechanism.In addition, using the kind of drive of thread segment connection between shaft and expansion part, have the characteristics that strength of joint it is high, it is easy to connect, reusable, have been standardized, the reliable and stable gap elimination of cooperation realization of mechanism itself can be passed through.Have the characteristics that structure is simple, volume mass is small, fast response time, strong environmental adaptability.
Description
Technical field
The present invention relates to a kind of cancellation elements of folding and unfolding mechanism junction radial clearance, and in particular to a kind of expandable member with
Gap eliminator between shaft, expandable member side and base member medial surface, belong to space mechanism expansion, connection locking and
Release tech field.
Background technique
The folded/expanded mechanism of space expandable member is simple with its structure, occupies little space, is excellent convenient for storage, transport etc.
It puts and is widely used in various space folding and unfolding mechanisms.With the development of aeronautical and space technology, in order to guarantee space folding and unfolding mechanism
Reliability, not only needed expandable member that can smoothly reach expanded position during expansion and smoothly locked, but need can
Gap between expansion part and shaft, expandable member side and base member medial surface can effectively eliminate, and avoid influencing folding exhibition
The rigidity and fundamental frequency of mechanism, cause to generate high-frequency vibration between expandable member and base member, seriously affect the anti-dry of folding and unfolding mechanism
Disturb ability.Therefore, it is necessary to for for the fixed such problem of folding and unfolding mechanism lock, develop a kind of simple structure, high reliablity,
Volume weight is small, low energy consumption, the gap eliminator of strong environmental adaptability.
Summary of the invention
The present invention determines rear matrix and the radial clearance being unfolded between part to the reliable of folding and unfolding mechanism to solve existing lock
The influence problem of property and stability, provides a kind of cancellation element of folding and unfolding mechanism junction radial clearance.
Technical solution of the present invention:
A kind of cancellation element of folding and unfolding mechanism junction radial clearance, including the first tight ring 1, matrix 2, expansion part 3, shaft
4 and the second tight ring 5, the matrix 2 be provided with groove, had on two opposite inner walls in the groove port the first pin hole and
Second pin hole；
The expansion part 3 is equipped with boss, is provided with third pin hole in boss, which is mounted in the groove of matrix 2,
Third pin hole hole location is corresponding with the hole location position of the first pin hole and the second pin hole；
The shaft 4 is truncated cone, and shaft 4, which sequentially passes through the first pin hole, third pin hole and the second pin hole, makes base
Body 2 and expansion 3 pin joint of part, and the first tight ring 1 is sleeved on the miner diameter end of shaft 4 and is located in the first pin hole, the second tight suit of ring 5
It is located in the second pin hole in the bigger diameter end of shaft 4, the freedom degree of the first tight ring 1 and the second common limitation shaft 4 of tight ring 5 makes to turn
Axis 4 becomes one structure with matrix 2；It is mobile along the axis direction of shaft (4) that part (3) are unfolded.
It is preferred: to be equipped with external thread section outstanding in the middle part of the shaft 4, be equipped in third pin hole and cooperate with external thread section
Internal thread segment.
Preferred: the external screw thread being equipped in the middle part of the shaft 4 and the internal screw thread being equipped in third pin hole are that single head is thin
Pitch thread.
Preferred: first pin hole and the second pin hole is the internal taper hole cooperated with shaft 4.
It is preferred: the internal taper hole that the third pin hole and shaft 4 cooperates, and the diameter between third pin hole and shaft 4
It is equidistant gap to gap.
It is preferred: set in the third pin hole ratio of the external thread length of internal thread length and shaft (4) as
1.5:1。
Preferred: the taper of the shaft 4 is 5 degree.
The invention has the following advantages: the present invention relates to a kind of elimination of folding and unfolding mechanism junction radial clearance dresses
It sets, which can effectively eliminate expandable member after expandable member locks and be turned while guaranteeing that expandable member is smoothly unfolded
Gap between axis, expandable member side and base member medial surface avoids gap to the rigidity of folding and unfolding mechanism and the influence of fundamental frequency,
To influence the anti-interference ability of folding and unfolding mechanism；The radial clearance of the device eliminates the expansion of process and unfolding mechanism simultaneously
Journey is synchronous to be carried out, and is driven without independent current source, with structure is simple, volume mass is small, low energy consumption, fast response time, ring
The adaptable feature in border.In addition, there is strength of joint using the kind of drive of thread segment connection between shaft and expansion part
High, easy to connect, reusable, the characteristics of having been standardized, can be realized by the cooperation of mechanism itself it is reliable and stable between
Gap is eliminated.Meanwhile the cancellation element of the folding and unfolding mechanism junction radial clearance of the present apparatus can be used as standard component, can directly assemble
Among the pin locking device for the gap that needs to disappear or structure, have the characteristics that convenient and efficient, manufacturing cost is low.
Detailed description of the invention
Fig. 1 is the structural schematic diagram before locking of the invention；
Fig. 2 is structural schematic diagram when after locking of the invention and gap is eliminated；
Part, 4- shaft, the tight ring of 5- second is unfolded in the tight ring of 1- first in figure, 2- matrix, 3-.
Specific embodiment
Specific embodiment 1:
Illustrate the specific embodiment of the invention in conjunction with attached drawing 1 to Fig. 2: a kind of folding and unfolding mechanism junction of the invention radial clearance
Cancellation element, including the first tight ring 1, matrix 2, expansion part 3, shaft 4 and the second tight ring 5, the matrix 2 be provided with groove,
The first pin hole and the second pin hole are had on two opposite inner walls in the groove；
The expansion part 3 is equipped with boss, is provided with third pin hole in boss, which is mounted in the groove of matrix 2,
Third pin hole hole location is corresponding with the hole location position of the first pin hole and the second pin hole；
First pin hole and the second pin hole is the internal taper hole cooperated with shaft 4；
The internal taper hole that the third pin hole and shaft 4 cooperates, and the radial gap between third pin hole and shaft 4 is
Equidistant gap；
Shaft 4 be truncated cone, shaft 4, which sequentially passes through the first pin hole, third pin hole and the second pin hole, makes matrix 2
With expansion 3 pin joint of part, and the first tight ring 1 is sleeved on the miner diameter end of shaft 4 and is located in the first pin hole, and the second tight ring 5 is sleeved on
The bigger diameter end of shaft 4 is located in the second pin hole, and the freedom degree of the first tight ring 1 and the second common limitation shaft 4 of tight ring 5 makes shaft 4
It becomes one structure with matrix 2；
It is equipped with external thread section outstanding in the middle part of the shaft 4, is equipped with the interior spiral shell cooperated with external thread section in third pin hole
Line section.So set, shaft 4 sequentially passes through the first pin hole, third pin as shown in Figure 1, the shaft 4 is truncated cone
Hole and the second pin hole make matrix 2 and expansion 3 pin joint of part, and the first tight ring 1 is sleeved on the miner diameter end of shaft 4 and is located at the first pin hole
Interior, the bigger diameter end that the second tight ring 5 is sleeved on shaft 4 is located in the second pin hole, and limitation turns jointly for the first tight ring 1 and the second tight ring 5
The freedom degree of axis 4 makes shaft 4 become one structure with matrix 2, therefore shaft 4 cannot be rotated relative to matrix 2, can not be in X direction
It is mobile.It is equipped with external thread section outstanding in the middle part of shaft 4, is equipped with the internal thread segment cooperated with external thread section in third pin hole, makes to open up
Part 3 is opened during around the shaft 4 rotation, expansion part 3 moves in X direction relative to shaft 4.When the expansion part 3 in Fig. 1 is with respect to base
When body part 2 is rotated from folded state to unfolded state, it is unfolded the internal screw thread precession on part 3, opposite shaft 4 has that micro-shifting is dynamic, in turn
It is coupled the third pin hole that part 3 is unfolded with the completion of shaft 4, the radial clearance between elimination expansion part 3 and shaft 4, and by
In the cooperation of internal thread segment and external thread section, expansion part 3 is set to become smaller with shaft 4 in the gap of X-direction, as shown in Figure 2.
As shown in Figure 1 to Figure 2, the present apparatus works in this way: the boss that part 3 is unfolded being placed on the recessed of matrix 2 first
In slot, then shaft 4 is inserted into from the second pin hole of matrix 2 by miner diameter end, when external thread section and the expansion part 3 of shaft 4
When internal thread segment contacts with each other, rotating shaft 4 completes the threaded connection between expansion part 3 and shaft 4；Continue thereafter with rotating shaft
4 until the third pin hole and shaft 4 of expansion part 3 are coupled and have certain pretightning force, then successively by the first tight 1 He of ring
Second tight ring 5 distinguishes interference in the miner diameter end and bigger diameter end of shaft 4, and expansion part 3 is finally folded to initial fold state,
As shown in Figure 1.When expansion part 3 needs to be unfolded, expansion part 3 rotates, due to the first tight ring 1 and the second tight limitation turn jointly of ring 5
The freedom degree of axis 4 makes shaft 4 become one structure with matrix 2, and expansion part 3 is rotated relative to shaft 4, in internal thread segment and outer spiral shell
Expansion part 3 is set to become smaller with shaft 4 in the gap of X-direction under the cooperation of line section, and since shaft 4 is truncated cone, third
Pin hole is internal taper hole, therefore when part 3 is unfolded relative to shaft 4 from miner diameter end to when bigger diameter end movement, make the third pin hole that part 3 is unfolded
It is coupled with the completion of shaft 4, eliminates the radial clearance between expansion part 3 and shaft 4.
This embodiment is just an exemplary description of this patent, does not limit its protection scope, those skilled in the art
Member can also be changed its part, as long as it does not exceed the essence of this patent, within the protection scope of the present patent.
Claims (7)
1. a kind of cancellation element of folding and unfolding mechanism junction radial clearance, it is characterised in that: including the first tight ring (1), matrix
(2), part (3), shaft (4) and the second tight ring (5) is unfolded, the matrix (2) is provided with groove, in the groove in opposite two
The first pin hole and the second pin hole are had on wall；
The expansion part (3) is equipped with boss, is provided with third pin hole in boss, which is mounted in the groove of matrix (2),
The hole location of third pin hole is corresponding with the hole location position of the first pin hole and the second pin hole；
The shaft (4) is truncated cone, and shaft (4), which sequentially passes through the first pin hole, third pin hole and the second pin hole, makes base
Body (2) and expansion part (3) pin joint, and the first tight ring (1) is sleeved on the miner diameter end of shaft (4) and is located in the first pin hole, second
The bigger diameter end that tight ring (5) is sleeved on shaft (4) is located in the second pin hole, and limitation turns jointly for the first tight ring (1) and the second tight ring (5)
The freedom degree of axis (4) makes shaft (4) become one structure with matrix (2)；Axis side of the expansion part (3) along shaft (4)
To movement.
2. a kind of cancellation element of folding and unfolding mechanism junction radial clearance according to claim 1, it is characterised in that: described
Shaft (4) in the middle part of be equipped with external thread section outstanding, the internal thread segment cooperated with external thread section is equipped in third pin hole.
3. a kind of cancellation element of folding and unfolding mechanism junction radial clearance according to claim 2, it is characterised in that: described
Shaft (4) in the middle part of the external screw thread that is equipped with and the internal screw thread being equipped in third pin hole be single head fine thread.
4. a kind of cancellation element of folding and unfolding mechanism junction radial clearance according to claim 1, it is characterised in that: described
The first pin hole and the second pin hole be with the truncated cone of shaft (4) cooperation internal taper hole.
5. a kind of cancellation element of folding and unfolding mechanism junction radial clearance according to claim 1, it is characterised in that: described
Third pin hole and shaft (4) the internal taper hole that cooperates of truncated cone, and the radial slot between third pin hole and shaft (4)
Gap is equidistant gap.
6. a kind of cancellation element of folding and unfolding mechanism junction radial clearance according to claim 1, it is characterised in that: described
Third pin hole in set internal thread length and shaft (4) external thread length ratio as 1.5:1.
7. a kind of cancellation element of folding and unfolding mechanism junction radial clearance according to claim 1, it is characterised in that: described
Shaft (4) taper be 5 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910501549.1A CN110155373B (en) | 2019-06-11 | 2019-06-11 | Device for eliminating radial clearance at joint of folding and unfolding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910501549.1A CN110155373B (en) | 2019-06-11 | 2019-06-11 | Device for eliminating radial clearance at joint of folding and unfolding mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110155373A true CN110155373A (en) | 2019-08-23 |
| CN110155373B CN110155373B (en) | 2020-11-13 |
Family
ID=67628303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910501549.1A Active CN110155373B (en) | 2019-06-11 | 2019-06-11 | Device for eliminating radial clearance at joint of folding and unfolding mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN110155373B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685429A (en) * | 2021-07-30 | 2021-11-23 | 长沙天仪空间科技研究院有限公司 | Unfolding structure and unfolding method |
Citations (7)
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|---|---|---|---|---|
| US4932807A (en) * | 1988-07-28 | 1990-06-12 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Clevis joint for deployable space structures |
| US5709500A (en) * | 1995-04-25 | 1998-01-20 | Mizelle; Ned W. | Furniture, furniture manufacturing method, and connector assembly |
| CN2760326Y (en) * | 2004-11-05 | 2006-02-22 | 铭异科技股份有限公司 | Rotating shaft structure with adjustable load bearing |
| CN203146568U (en) * | 2013-04-02 | 2013-08-21 | 成都飞机设计研究所 | Hinge self-adaptive conical connecting assembly |
| US20130280012A1 (en) * | 2007-11-26 | 2013-10-24 | Esco Corporation | Pinned Connections |
| CN106364700A (en) * | 2016-08-29 | 2017-02-01 | 南京航空航天大学 | Space deployable mechanism designed on basis of posterior wing deployable mechanism of dermaptera insect earwigs |
| CN107054693A (en) * | 2017-05-05 | 2017-08-18 | 燕山大学 | Single-degree-of-freedom is asymmetric to cut hinge formula deployable mechanism unit |
-
2019
- 2019-06-11 CN CN201910501549.1A patent/CN110155373B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4932807A (en) * | 1988-07-28 | 1990-06-12 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Clevis joint for deployable space structures |
| US5709500A (en) * | 1995-04-25 | 1998-01-20 | Mizelle; Ned W. | Furniture, furniture manufacturing method, and connector assembly |
| CN2760326Y (en) * | 2004-11-05 | 2006-02-22 | 铭异科技股份有限公司 | Rotating shaft structure with adjustable load bearing |
| US20130280012A1 (en) * | 2007-11-26 | 2013-10-24 | Esco Corporation | Pinned Connections |
| CN203146568U (en) * | 2013-04-02 | 2013-08-21 | 成都飞机设计研究所 | Hinge self-adaptive conical connecting assembly |
| CN106364700A (en) * | 2016-08-29 | 2017-02-01 | 南京航空航天大学 | Space deployable mechanism designed on basis of posterior wing deployable mechanism of dermaptera insect earwigs |
| CN107054693A (en) * | 2017-05-05 | 2017-08-18 | 燕山大学 | Single-degree-of-freedom is asymmetric to cut hinge formula deployable mechanism unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685429A (en) * | 2021-07-30 | 2021-11-23 | 长沙天仪空间科技研究院有限公司 | Unfolding structure and unfolding method |
| CN113685429B (en) * | 2021-07-30 | 2024-05-28 | 长沙天仪空间科技研究院有限公司 | Unfolding structure and unfolding method |
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| CN110155373B (en) | 2020-11-13 |
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