CN110145526B - Locking mechanism - Google Patents
Locking mechanism Download PDFInfo
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- CN110145526B CN110145526B CN201910268822.0A CN201910268822A CN110145526B CN 110145526 B CN110145526 B CN 110145526B CN 201910268822 A CN201910268822 A CN 201910268822A CN 110145526 B CN110145526 B CN 110145526B
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- Prior art keywords
- sleeve
- shaft
- locking mechanism
- safety
- spring
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- 230000007246 mechanism Effects 0.000 title claims abstract description 61
- 238000003780 insertion Methods 0.000 claims description 26
- 230000037431 insertion Effects 0.000 claims description 26
- 230000009471 action Effects 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000020347 spindle assembly Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/02—Releasable fastening devices locking by rotation
- F16B21/04—Releasable fastening devices locking by rotation with bayonet catch
Abstract
The invention provides a locking mechanism which can meet the requirements of maintenance, replacement and the like of aerospace products in orbit, is simple in operation and reliable in connection, and is suitable for places needing fastening connection of the aerospace products in the state of orbit. This locking mechanism comprises sleeve subassembly and inserted axle subassembly two parts, and the sleeve subassembly can carry out "all-round enclosed type" locking with inserting the axle subassembly, locking mode safe and reliable to can realize that all-round trace floats and the adjustment. Wherein, sleeve subassembly and inserted shaft subassembly can be fixed respectively on two objects, are connected with object A when the safety cover, and when the base was connected with object B, can realize object A and object B's quick reliable connection promptly to can realize that the omnidirectional is floated a little and the adjustment. The locking mechanism can be used for realizing the quick and reliable connection and locking of two objects. The locking mechanism has the characteristics of small volume, simplicity in operation, high reliability and the like.
Description
Technical Field
The present invention relates to a locking mechanism.
Background
At present, when aerospace products are in an in-orbit state, part of single machines have the requirements of in-orbit maintenance, replacement and the like, so a simple and reliable mechanism is needed, the operation of repeated dismounting and mounting of the single machines in the in-orbit state can be met, and the requirements of simple operation, reliable connection, certain manufacturability and no generation of redundant substances are met.
Disclosure of Invention
The invention aims to provide a locking mechanism.
To solve the above problems, the present invention provides a locking mechanism comprising: the safety device comprises a safety spring, a safety pin, a sleeve, a reset spring, a base, a safety cover, a sleeve cover, a telescopic spring, an insertion shaft, a floating sealing ring and a dust ring, wherein the safety spring, the safety pin, the sleeve, the safety cover, the sleeve cover and the telescopic spring form a sleeve assembly; the reset spring, the base, the inserting shaft, the floating seal ring and the dustproof ring form an inserting shaft assembly, the sleeve assembly and the inserting shaft assembly are mutually independent, wherein,
the sleeve component is connected with an object A by the aid of the safety cover, and the shaft inserting component is connected with an object B by the aid of the base;
the telescopic spring is fixed on the sleeve cover, and the sleeve cover are connected through a fastener;
the safety pin is inserted into the sleeve;
the safety spring is arranged in the safety pin, and the safety cover is connected with the safety spring;
the floating seal ring, the dustproof ring and the reset spring are installed on the inserting shaft, the bottom end of the inserting shaft is connected with the base, and the top end of the inserting shaft is inserted into the bolt groove of the sleeve.
Further, in the above-described locking mechanism, when in the locked state, the state of the insertion shaft is an omni-directional locked state.
Furthermore, in the locking mechanism, after the insertion shaft and the sleeve are axially limited, the insertion shaft is circumferentially limited by the safety pin, four pins of the safety pin are slightly smaller than four safety pin grooves in the sleeve, and the insertion shaft is slightly floated and adjusted in the circumferential direction under the action of the return spring.
Furthermore, in the locking mechanism, the inserting shaft is constrained by the base to realize radial limiting, and the inserting shaft utilizes the floating sealing ring to float and adjust slightly in the radial direction.
Further, in the above locking mechanism, when the insertion shaft is in the omni-directional locking state, a safety spring ensures that the safety pin is in the locking position.
Further, in the above locking mechanism, when the safety pin is pulled out, the insertion shaft rotates by a predetermined angle under the action of the return spring to leave the locking position, and at this time, the insertion shaft and the sleeve can be separated.
Further, in the locking mechanism, the dust ring is used for preventing sundries from entering the mechanism.
Further, in the locking mechanism, in the locking process, after the shaft inserting assembly moves to the locking position in the axial direction, if the shaft inserting assembly continues to move in the axial direction, the expansion spring is compressed to the minimum state and cannot be compressed continuously; the end surfaces of the base and the sleeve will come into contact, further limiting axial movement of the shaft assembly.
Furthermore, in the locking mechanism, the head of the insertion shaft is a round angle, and the bottom of the sleeve is a round angle.
Further, in the above locking mechanism, the sleeve and the insertion shaft are axially limited by the protrusions on the inner wall of the sleeve and the protrusions on the insertion shaft, a space between two protrusions in the sleeve is slightly larger than the protrusions on the insertion shaft, and the insertion shaft is slightly floated and adjusted in the axial direction by the expansion spring.
Further, in the above locking mechanism, in the locking operation, the insert shaft is inserted into the sleeve to a prescribed position, at which time the shear pin is raised in the axial direction by the projection of the insert shaft; the inserting shaft rotates by a specific angle, and at the moment, the safety pin falls down in the axial direction under the action of the safety spring and reaches a set limit position.
Furthermore, in the locking mechanism, during unlocking operation, the safety pin is lifted to a set unlocking position, and at the moment, the inserting shaft rotates to an unlocking position after rotating a certain angle under the action of the return spring; and pulling out the plug shaft.
Compared with the prior art, the invention can meet the requirements of maintenance, replacement and the like of the aerospace product in the in-orbit state, has simple operation and reliable connection, and is suitable for the places needing fastening connection of the aerospace product in the in-orbit state. This locking mechanism comprises sleeve subassembly and inserted axle subassembly two parts, and the sleeve subassembly can carry out "all-round enclosed type" locking with inserting the axle subassembly, locking mode safe and reliable to can realize that all-round trace floats and the adjustment. Wherein, sleeve subassembly and insert a subassembly and can fix respectively on two objects, are connected with object A when insurance lid 6, and when base 5 was connected with object B, can realize object A and object B's quick reliable connection promptly to can realize that the omnidirectional is floated a little and the adjustment. The locking mechanism can be used for realizing the quick and reliable connection and locking of two objects. The locking mechanism has the characteristics of small volume, simplicity in operation, high reliability and the like.
Drawings
FIG. 1 is an assembled block diagram of a locking mechanism according to one embodiment of the present invention;
FIG. 2 is a top view of a sleeve assembly according to an embodiment of the present invention;
FIG. 3 is a side view of a sleeve assembly according to an embodiment of the present invention;
FIG. 4 is a side view of a spindle assembly according to one embodiment of the present invention;
FIG. 5 is a top view of a spindle assembly according to one embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 5, the present invention provides a locking mechanism, including: the safety device comprises a safety spring 1, a safety pin 2, a sleeve 3, a reset spring 4, a base 5, a safety cover 6, a sleeve cover 7, an expansion spring 8, an inserting shaft 9, a floating seal ring 10 and a dust ring 11, wherein the safety spring 1, the safety pin 2, the sleeve 3, the safety cover 6, the sleeve cover 7 and the expansion spring 8 form a sleeve assembly; the reset spring 4, the base 5, the inserting shaft 9, the floating seal ring 10 and the dust ring 11 form an inserting shaft component, the sleeve component and the inserting shaft component are mutually independent, wherein,
the sleeve component is connected with an object A by the safety cover 6, and the shaft inserting component is connected with an object B by the base 5;
the telescopic spring 8 is fixed on the sleeve cover 7, and the sleeve 3 is connected with the sleeve cover 7 through a fastener;
the safety pin 2 is inserted into the sleeve 3;
the safety spring 1 is arranged in the safety pin 2, and the safety cover 6 is connected with the safety spring 1;
the floating seal ring 10, the dustproof ring 11 and the reset spring 4 are installed on the inserting shaft 9, the bottom end of the inserting shaft 9 is connected with the base 5, and the top end of the inserting shaft 9 is inserted into a pin slot of the sleeve 3.
The method specifically comprises the following installation steps:
1) fixing the telescopic spring 8 on the sleeve cover 7, and then connecting the sleeve 3 and the sleeve cover 7 by using a fastener;
2) inserting a safety pin 2 in the sleeve 3;
3) the safety spring 1 is arranged in the safety pin 2, and the safety cover 6 is arranged, so that the assembly of the sleeve component is completed;
4) installing a floating seal ring 10, a dust ring 11 and a return spring 4 on an insert shaft 9;
5) the inserting shaft 9 is arranged in the base 5, and the other end of the return spring 4 is fixed on the base 5, so that the assembling of the inserting shaft assembly is completed;
6) the sleeve component can be connected with an object A by using a safety cover 6, and the inserting shaft 9 can be connected with an object B by using a base 5;
7) the plug shaft 9 is inserted into the sleeve 3, and after the axial movement is in place, the safety pin 2 can be automatically inserted into the plug pin groove of the sleeve 3 under the action of the safety spring 1 by rotating a certain angle.
Thus, the locking function of the whole locking mechanism is realized.
The invention can meet the requirements of maintenance, replacement and the like of the aerospace product in the in-orbit state, has simple operation and reliable connection, and is suitable for the places needing fastening connection of the aerospace product in the in-orbit state. This locking mechanism comprises sleeve subassembly and inserted axle subassembly two parts, and the sleeve subassembly can carry out "all-round enclosed type" locking with inserting the axle subassembly, locking mode safe and reliable to can realize that all-round trace floats and the adjustment. Wherein, sleeve subassembly and insert a subassembly and can fix respectively on two objects, are connected with object A when insurance lid 6, and when base 5 was connected with object B, can realize object A and object B's quick reliable connection promptly to can realize that the omnidirectional is floated a little and the adjustment. The locking mechanism can be used for realizing the quick and reliable connection and locking of two objects. The locking mechanism has the characteristics of small volume, simplicity in operation, high reliability and the like.
In an embodiment of the locking mechanism of the present invention, when in the locked state, the state of the insertion shaft 9 is the omni-directional locked state.
In an embodiment of the locking mechanism of the present invention, the sleeve 3 and the insertion shaft 9 are axially limited by the protrusions on the inner wall of the sleeve 3 and the protrusions on the insertion shaft 9, the space between two protrusions in the sleeve 3 is slightly larger than the protrusions on the insertion shaft 9, and the insertion shaft 9 is slightly floated and adjusted in the axial direction by the extension spring 8.
In an embodiment of the locking mechanism of the present invention, after the inserting shaft 9 and the sleeve 3 are axially limited, the inserting shaft 9 is circumferentially limited by the safety pin 2, four inserting pins of the safety pin 2 are slightly smaller than four safety pin grooves in the sleeve 3, and the inserting shaft 9 slightly floats and is adjusted in the circumferential direction under the action of the return spring 4.
In an embodiment of the locking mechanism of the present invention, the insertion shaft 9 is constrained by the base 5 to achieve radial position limitation, and the insertion shaft 9 utilizes the floating seal ring 10 to have slight floating and adjustment in the radial direction.
In an embodiment of the present invention, when the shaft 9 is in the omni-directional locking state, the safety spring 1 ensures that the safety pin 2 is in the locking position, so as to prevent the safety pin 2 from leaving the locking position by itself, which results in a locking failure.
In an embodiment of the locking mechanism of the present invention, when the safety pin 2 is pulled out, the insertion shaft 9 rotates through a predetermined angle under the action of the return spring 4 to leave the locking position, and at this time, the insertion shaft 9 and the sleeve 3 can be separated.
In an embodiment of the locking mechanism of the present invention, the dust ring 11 is used to prevent impurities such as dust from entering the mechanism.
In one embodiment of the locking mechanism of the present invention, during the locking process, after the shaft-inserting assembly moves axially to the locking position, if the shaft-inserting assembly continues to move axially, first, the extension spring 8 will be compressed to the minimum state, and cannot be compressed continuously; secondly, the end faces of the base 5 and the sleeve 3 will come into contact, further restricting axial movement of the spiale assembly. The two limits provide axial fault tolerance for the locking mechanism assembly.
In an embodiment of the locking mechanism of the present invention, the head of the insertion shaft 9 is a rounded corner, and the bottom of the sleeve 3 is a rounded corner, and during the locking operation, the rounded corner of the head of the insertion shaft 9 and the rounded corner of the bottom of the sleeve 3 allow the insertion process to have a certain guiding function and fault tolerance in the horizontal direction.
In one embodiment of the locking mechanism of the present invention, the locking operation is performed in two steps, wherein the first step is to insert the plug shaft 9 into the sleeve 3 to a specified position, and at this time, the safety pin 2 is lifted in the axial direction under the action of the protrusion of the plug shaft 9; the second step is to rotate the inserting shaft 9 by a specific angle, at the moment, the safety pin 2 can fall down in the axial direction under the action of the safety spring 1 and reach a set limit position, and then the locking function can be realized.
In one embodiment of the locking mechanism, the unlocking operation is carried out in two steps, wherein the first step is to lift the safety pin 2 to a set unlocking position, and at the moment, the inserting shaft 9 rotates a certain angle to the unlocking position under the action of the return spring 4; the second step is to extract the plug shaft 9, so that the unlocking function can be realized.
Compared with the prior art, the invention has the following beneficial effects:
1) the locking mechanism is simple to operate when in use, and can complete locking and unlocking only by axial movement and a certain amount of rotation;
2) when the locking mechanism is in a locking state and an unlocking state, no part is additionally generated, so that the risk of falling or losing the part is avoided;
3) when the locking mechanism is in a locking state, the locking mechanism is in an omnibearing surrounding type locking state, and slight floating and adjustment can be met in an omnibearing manner;
4) the locking mechanism has the characteristics of light weight, simplicity and easiness in operation and high reliability.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. It will be apparent to those skilled in the art that various changes and modifications may be made in the invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (12)
1. A latching mechanism, comprising: the safety device comprises a safety spring, a safety pin, a sleeve, a reset spring, a base, a safety cover, a sleeve cover, a telescopic spring, an insertion shaft, a floating sealing ring and a dust ring, wherein the safety spring, the safety pin, the sleeve, the safety cover, the sleeve cover and the telescopic spring form a sleeve assembly; the reset spring, the base, the inserting shaft, the floating seal ring and the dustproof ring form an inserting shaft assembly, the sleeve assembly and the inserting shaft assembly are mutually independent, wherein,
the sleeve component is connected with an object A by the aid of the safety cover, and the shaft inserting component is connected with an object B by the aid of the base;
the telescopic spring is fixed on the sleeve cover, and the sleeve cover are connected through a fastener;
the safety pin is inserted into the sleeve;
the safety spring is arranged in the safety pin, and the safety cover is connected with the safety spring;
the floating seal ring, the dustproof ring and the reset spring are installed on the inserting shaft, the bottom end of the inserting shaft is connected with the base, and the top end of the inserting shaft is inserted into the bolt groove of the sleeve.
2. The locking mechanism of claim 1, wherein the state of the plug shaft is an omni-directional locked state when in the locked state.
3. The locking mechanism of claim 1, wherein after the shaft and sleeve are axially restrained, the shaft is circumferentially restrained by the safety pin, the four pins of the safety pin are slightly smaller than the four safety pin grooves in the sleeve, and the shaft floats and adjusts slightly in the circumferential direction under the action of the return spring.
4. The locking mechanism of claim 1, wherein the spindle is constrained by the base to provide radial restraint, the spindle utilizing a floating seal to allow slight radial float and adjustment.
5. The locking mechanism of claim 1, wherein a safety spring secures the safety pin in the locked position when the spindle is in the omni-directional locked state.
6. The locking mechanism of claim 1, wherein when said safety pin is withdrawn, the spindle is rotated through a predetermined angle by the return spring away from the locked position, thereby disengaging the spindle from the sleeve.
7. The locking mechanism of claim 1, wherein the dust ring is configured to prevent debris from entering the mechanism.
8. The locking mechanism of claim 1, wherein during locking, after the shaft assembly has moved axially to the locked position, the extension spring is compressed to a minimum and cannot be further compressed if axial movement continues; the end surfaces of the base and the sleeve will come into contact, further limiting axial movement of the shaft assembly.
9. The locking mechanism of claim 1, wherein the head of the shaft is rounded and the bottom of the sleeve is rounded, the rounded corners of the head of the shaft and the rounded corners of the bottom of the sleeve providing some guidance and tolerance in the horizontal direction during the locking operation.
10. The locking mechanism of claim 1, wherein the sleeve and the spindle are axially restrained by protrusions in the inner wall of the sleeve and protrusions on the spindle, the spacing between two protrusions in the sleeve being slightly larger than the protrusions on the spindle, the spindle being slightly axially floating and adjustable by a retractable spring.
11. A locking mechanism as claimed in claim 10, wherein in a locking operation, the plug shaft is inserted into the sleeve to a prescribed position in which the shear pin is raised axially by the projection of the plug shaft; the inserting shaft rotates by a specific angle, and at the moment, the safety pin falls down in the axial direction under the action of the safety spring and reaches a set limit position.
12. The locking mechanism of claim 1, wherein during the unlocking operation, the safety pin is raised to a set unlocking position, and the plug shaft is rotated through a certain angle to an unlocking position under the action of the return spring; and pulling out the plug shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910268822.0A CN110145526B (en) | 2019-04-04 | 2019-04-04 | Locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910268822.0A CN110145526B (en) | 2019-04-04 | 2019-04-04 | Locking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110145526A CN110145526A (en) | 2019-08-20 |
| CN110145526B true CN110145526B (en) | 2021-04-13 |
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ID=67589470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910268822.0A Active CN110145526B (en) | 2019-04-04 | 2019-04-04 | Locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110145526B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111037521B (en) * | 2019-12-31 | 2021-05-28 | 青岛中加特电气股份有限公司 | Rotating shaft locking mechanism and motor maintenance workbench |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3564563A (en) * | 1968-01-09 | 1971-02-16 | Rex Chainbelt Inc | Adjustable quick acting fastener |
| CH687829A5 (en) * | 1994-05-04 | 1997-02-28 | Maurice Petignat | Device for assembling two elements to one another. |
| CN201068919Y (en) * | 2007-08-14 | 2008-06-04 | 中国重汽集团济南技术中心有限公司 | Locking device |
| WO2014044313A1 (en) * | 2012-09-20 | 2014-03-27 | Abb Technology Ag | Connecting device |
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2019
- 2019-04-04 CN CN201910268822.0A patent/CN110145526B/en active Active
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| Publication number | Publication date |
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| CN110145526A (en) | 2019-08-20 |
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