CN209705005U - A kind of fast assembling-disassembling fastener - Google Patents
A kind of fast assembling-disassembling fastener Download PDFInfo
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- CN209705005U CN209705005U CN201920391325.5U CN201920391325U CN209705005U CN 209705005 U CN209705005 U CN 209705005U CN 201920391325 U CN201920391325 U CN 201920391325U CN 209705005 U CN209705005 U CN 209705005U
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- 229910001566 austenite Inorganic materials 0.000 claims description 12
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 9
- 229910000734 martensite Inorganic materials 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 230000006870 function Effects 0.000 claims description 3
- 230000009466 transformation Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
The application belongs to anchor design technical field, and in particular to a kind of fast assembling-disassembling fastener, comprising: the first limit section, radial dimension are greater than setting diameter；Linkage section is manufactured by marmem, and one end is connect with limit section；Second limit section, is manufactured by marmem, is connect with the other end of linkage section；Wherein, fastener includes geneva state, and temperature is lower than geneva predetermined temperature, and linkage section diameter and the second limit section radial dimension are less than setting diameter；Ovshinsky state, temperature are higher than Ovshinsky predetermined temperature, and linkage section diameter and the second limit section radial dimension are greater than setting diameter.
Description
Technical Field
The application belongs to the technical field of fastener design, and particularly relates to a quick-assembly and disassembly fastener.
Background
The fastener is used for fastening and connecting two or more parts with through holes, and has wide engineering application in the field of mechanical manufacturing.
Currently common fasteners include: the bolt is high in bearing capacity, a thread with certain precision needs to be processed to be matched with a nut for use, a certain installation space is needed, in addition, the bolt bears or transmits load for a long time, certain deformation is possibly generated to cause difficulty in disassembly, especially under the condition of interference fit, the bolt is easy to break in a hole and scratch and damage the hole wall, and the maintenance period and the maintenance cost are increased; rivets and pull-out nails are often used for connections with relatively low loads, require a certain installation space and special equipment for installation, and can only be removed in a destructive manner.
The above-mentioned drawbacks of the commonly used fastening elements limit their range of application under certain conditions, and there is a pressing need for improvement, in particular in the manufacture of high-precision points for aerospace and the like.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
It is an object of the present application to provide a quick-release fastener that overcomes or alleviates at least one of the above-mentioned disadvantages.
The technical scheme of the application is as follows:
a quick-release fastener comprising:
the radial size of the first limiting section is larger than the set diameter;
the connecting section is made of shape memory alloy, and one end of the connecting section is connected with the limiting section;
the second limiting section is made of shape memory alloy and is connected with the other end of the connecting section;
wherein,
the fastener has:
in the Marfan state, the temperature is lower than the Marfan preset temperature, and the diameter of the connecting section and the radial size of the second limiting section are smaller than the set diameter;
and in an austenite state, the temperature is higher than the austenite preset temperature, and the diameter of the connecting section and the radial size of the second limiting section are larger than the set diameter.
In accordance with at least one embodiment of the present application, when the fastener is in the mahalanobis condition,
the diameter of the connecting section is d +. DELTA.d-delta;
the radial dimension of the second limiting section is d + [ delta ] d '-delta';
when the fastener is in the austenitic state,
the diameter of the connecting section is d + delta d;
the radial dimension of the second limiting section is d + [ delta ] d';
wherein,
d is a set diameter;
delta d is the interference magnitude of the connecting section;
delta is the deformation quantity of the connecting section, delta > delta d;
delta d' is the interference magnitude of the second limiting section;
delta ' is the deformation of the second limiting section, delta d < deltad ' < delta '.
According to at least one embodiment of the present application, the second position-limiting section is axially provided with a central hole.
According to at least one embodiment of the present application, the martensitic phase transition starting temperature of the connecting section and the second limiting section is Ms;
MS is less than the lowest temperature at which the fastener will function properly.
According to at least one embodiment of the present application, the austenite transformation end temperature of the connecting section and the second stopper section is Af;
af does not exceed the maximum temperature at which the fastener will operate properly.
The application has at least the following beneficial technical effects: the connecting section and the second limiting section of the fastener are made of shape memory alloy, the connection and the disassembly of the connecting piece are realized by the aid of the large deformability and the shape memory capacity of the shape memory alloy, the fastener has strong bearing capacity, the fastener can be used independently without being matched with other parts to realize the fastening of the connecting piece, the assembling and the disassembling processes of the fastener are simple and convenient, special equipment is not needed in the assembling and disassembling processes of the fastener, the connecting structure cannot be damaged, and in addition, the fastener can be used for closed connection.
Drawings
FIG. 1 is a schematic structural view of a quick release fastener in the Marangoni state according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural view of a quick-release fastener in an austenitic state as provided by embodiments of the present application;
FIG. 3 is a schematic structural view of a quick release fastener according to an embodiment of the present disclosure in operation;
wherein,
1-a first limiting section; 2-a connecting segment; 3-a second limiting section.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the present application are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that in the description of the present application, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.
The present application is described in further detail below with reference to fig. 1 to 3.
A quick-release fastener comprising:
the radial size of the first limiting section 1 is larger than a set diameter;
the connecting section 2 is made of shape memory alloy, and one end of the connecting section is connected with the limiting section;
the second limiting section 3 is made of shape memory alloy and is connected with the other end of the connecting section 2;
wherein,
the fastener has:
in the Marfan state, the temperature is lower than the Marfan preset temperature, and the diameter of the connecting section 2 and the radial size of the second limiting section 3 are smaller than the set diameter;
in an austenite state, the temperature is higher than the austenite preset temperature, and the diameter of the connecting section 2 and the radial size of the second limiting section 3 are larger than the set diameter.
As for the above-mentioned quick-release fastener, it is easily understood by those skilled in the art that it is used for connecting two or more parts having through-holes, wherein the set diameter is the diameter of the through-hole of the part to be connected, and the use of the fastener includes an assembling process and a disassembling process.
When the fastener is assembled, the temperature is reduced to the Ma predetermined temperature, the fastener is in the Ma state, the second limiting section 3 of the fastener penetrates through a through hole in a to-be-connected piece, the connecting section 2 of the fastener is located in a channel formed by communicating the through holes in the to-be-connected piece, the fastener is transited from the Ma state to the austenite state along with the rise of the temperature, the diameter of the connecting section 2 is expanded to be abutted against the inner wall of the through hole in the to-be-connected piece, interference fit is formed, the looseness between the fastener and the to-be-connected piece is limited by means of extrusion force and friction force generated by the extrusion force, and the radial size of the second limiting section 3 can be expanded to be larger than the diameter of the through hole in the to-be-connected piece due to the.
When the fastener is detached, the fastener is transited to the Ma state through local cooling, and the diameters of the connecting section 2 and the second limiting section 3 are contracted to be smaller than the diameter of the through hole on the connecting piece and then taken out.
In some optional embodiments, the first position-limiting end 1 and the second position-limiting end 3 are cylindrical, and the first position-limiting end 1 and the second position-limiting end 3 are disposed coaxially with the connecting section 2.
In some alternative embodiments, the diameter of the connecting section 2 is d +. DELTA.d-delta when the fastener is in the Marek state; the radial dimension of the second limiting section 3 is d + [ delta ] d '-delta';
when the fastener is in an austenite state, the diameter of the connecting section 2 is d + delta d; the radial dimension of the second limiting section 3 is d + [ delta ] d'; wherein,
d is a set diameter; delta d is the interference magnitude of the connecting section 2; delta is the deformation quantity of the connecting section 2, delta > delta d; delta d' is the interference magnitude of the second limiting section 3; δ ' is the deformation of the second limiting section 3, Δ d < Δd ' < δ '.
In some optional embodiments, the second limiting section 3 is axially provided with a central hole to reduce the tensile rigidity.
In some alternative embodiments, the martensitic transformation starting temperature of the connecting section 2 and the second limiting section 3 is Ms; MS is less than the lowest temperature for normal operation of the fastener;
the austenite phase transition finishing temperature of the connecting section 2 and the second limiting section 3 is Af; af does not exceed the maximum temperature at which the fastener will operate properly.
For the above-mentioned fastener, it is easy to understand by those skilled in the art that the martensitic transformation starting temperature Ms of the connecting section 2 and the second limiting section 3 is set to be less than the lowest temperature for normal operation of the fastener; the austenite phase transition finishing temperature Af of the connecting section 2 and the second limiting section 3 is set not to exceed the highest temperature of the fastener in normal working use, so that the normal use of the connecting structure can be prevented from being damaged under the influence of temperature;
in addition, the connecting section 2 and the second limiting section 3 adopt two-way shape memory alloy, and the setting of the martensite phase transformation starting temperature Ms and the austenite phase transformation finishing temperature Af can be realized through the selection of alloy element proportion.
So far, the technical solutions of the present application have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present application is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the present application, and the technical scheme after the changes or substitutions will fall into the protection scope of the present application.
Claims (5)
1. A quick release fastener, comprising:
a first limiting section (1) the radial size of which is larger than a set diameter;
the connecting section (2) is made of shape memory alloy, and one end of the connecting section is connected with the limiting section;
the second limiting section (3) is made of shape memory alloy and is connected with the other end of the connecting section (2);
wherein,
the fastener has:
in the Marfan state, the temperature is lower than the Marfan preset temperature, and the diameter of the connecting section (2) and the radial size of the second limiting section (3) are smaller than the set diameter;
and in an austenitic state, the temperature is higher than the austenite preset temperature, and the diameter of the connecting section (2) and the radial size of the second limiting section (3) are larger than the set diameter.
2. The quick release fastener of claim 1,
when the fastener is in the markov state,
the diameter of the connecting section (2) is d + [ delta ] d-delta;
the radial dimension of the second limiting section (3) is d +. DELTA.d '-delta';
when the fastener is in the austenitic state,
the diameter of the connecting section (2) is d + delta d;
the radial dimension of the second limiting section (3) is d +. DELTA.d';
wherein,
d is the set diameter;
d is the interference magnitude of the connecting section (2);
delta is the deformation quantity of the connecting section (2), delta-delta d;
delta d' is the interference magnitude of the second limiting section (3);
delta ' is the deformation of the second limiting section (3), delta d < deltad ' < delta '.
3. The quick release fastener of claim 1,
the second limiting section (3) is provided with a central hole along the axial direction.
4. The quick release fastener of claim 1,
the martensite phase transition starting temperature of the connecting section (2) and the second limiting section (3) is Ms;
MS is less than the lowest temperature at which the fastener will function properly.
5. The quick release fastener of claim 1,
the austenite phase transition finishing temperature of the connecting section (2) and the second limiting section (3) is Af;
af does not exceed the maximum temperature at which the fastener will function properly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920391325.5U CN209705005U (en) | 2019-03-26 | 2019-03-26 | A kind of fast assembling-disassembling fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920391325.5U CN209705005U (en) | 2019-03-26 | 2019-03-26 | A kind of fast assembling-disassembling fastener |
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| CN209705005U true CN209705005U (en) | 2019-11-29 |
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| CN201920391325.5U Active CN209705005U (en) | 2019-03-26 | 2019-03-26 | A kind of fast assembling-disassembling fastener |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460106A (en) * | 2020-12-04 | 2021-03-09 | 中国航空工业集团公司沈阳飞机设计研究所 | Fastener design capable of being rapidly disassembled and assembled and use method |
-
2019
- 2019-03-26 CN CN201920391325.5U patent/CN209705005U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460106A (en) * | 2020-12-04 | 2021-03-09 | 中国航空工业集团公司沈阳飞机设计研究所 | Fastener design capable of being rapidly disassembled and assembled and use method |
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