CN114001088B - Memory alloy anti-loosening connecting fastener - Google Patents
Memory alloy anti-loosening connecting fastener Download PDFInfo
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- CN114001088B CN114001088B CN202111187139.8A CN202111187139A CN114001088B CN 114001088 B CN114001088 B CN 114001088B CN 202111187139 A CN202111187139 A CN 202111187139A CN 114001088 B CN114001088 B CN 114001088B
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- memory alloy
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- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 42
- 238000007906 compression Methods 0.000 claims abstract description 13
- 230000006835 compression Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 5
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 230000006870 function Effects 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 abstract description 13
- 239000000956 alloy Substances 0.000 abstract description 13
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 230000007774 longterm Effects 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/10—Arrangements for locking
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/12—Pivotal connections incorporating flexible connections, e.g. leaf springs
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- 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
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/77—Use of a shape-memory material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The invention belongs to the technical field of memory alloy, in particular to a memory alloy anti-loosening connecting fastener, which aims at solving the problem that the end part of the memory alloy is easy to tear after a plurality of times of recovery in the existing hard connecting mode. When the device is used, when the two memory alloys are connected, the tension can be counteracted under the action of the two compression springs when the memory alloys are pulled due to the expansion of the device, and the original position relationship can be restored after the states of the memory alloys at the two ends are stable.
Description
Technical Field
The invention relates to the technical field of memory alloy, in particular to a memory alloy anti-loosening connecting fastener.
Background
Another important property of shape memory alloys is pseudo-elasticity, also known as superelasticity, which is manifested by a much greater ability to recover deformation under external forces than typical metals, i.e. large strains created during loading are recovered with unloading. This property is commonly used in medicine and in building shock absorption and in daily life. Such as the aforementioned artificial bones, bone fracture fixation pressers, dental orthodontic appliances, etc. Spectacle frames made of shape memory alloys can withstand much greater deformations than conventional materials without breaking.
The existing connecting piece for the memory alloy is usually hard connection, and the movable connection between two objects is completed by means of the telescopic property of the memory alloy, so that the connecting mode is scaled for a plurality of times for a long time, and the connection is easy to loosen and tear at the connecting end.
Disclosure of Invention
The invention provides a memory alloy anti-loosening connecting fastener, which aims to solve the problem that the end part of a memory alloy is easy to tear after a plurality of times of recovery in the existing hard connecting mode.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a memory alloy locking connection fastener, including establishing the cavity wholly and be fixed box one and fixed box two of flat square tube structure, and fixed box one and fixed box two are close to the top and open respectively and are had the breach of mutual symmetry, and all sliding connection has the fixed block in two breaches, open the upper surface of fixed block has a plurality of screw for installing memory alloy, both sides all are fixed with the side shield around fixed box one and fixed box two, and two side shield relative one side in fixed box one is close to the tip and all open horizontal spout, the lower surface of fixed block is close to the front and back side in middle part and all is fixed with the L shape guide block that suits with the spout, and the lower surface middle part of fixed block is fixed with the spring dog, the spring dog is kept away from one side of L shape guide block and is all fixed with compression spring, fixed with the intermediate disc and the U-shaped card that are articulated together respectively in one side that fixed with each other in fixed with two sides that are close to fixed with each other in fixed with the fixed block, and the fastening bolt between intermediate disc and the U-shaped card, the tip of fastening bolt has cup jointed hexagonal nut, thereby can be when using, when this device will two the memory alloy of two sets up, the tensile force of memory alloy of the effect of the memory alloy of the fact can be stable after the tensile state is produced, after the tensile state is stable, the memory alloy of the tensile state is stable, and after the tensile state is produced; the connecting device can also realize the fixation of two memory alloys at any angle, and the fixing box I and the fixing box II can be fixed again after the fastening bolts are loosened firstly and then the fixing box I and the fixing box II are rotated around the axis line where the fastening bolts are positioned.
As a preferable scheme in the invention, the upper surface and the lower surface of one end of the L-shaped guide block far away from the fixed block are respectively provided with a transverse roller groove, rollers are respectively fixed in the upper roller groove and the lower roller groove, and the number of the rollers in the upper roller groove and the lower roller groove is one and two respectively, so that the functions of stabilizing and reducing friction are achieved.
As the preferable scheme in the invention, the corners of the L-shaped guide blocks are provided with the fillets, so that when the memory alloy fixed on the fixed block is subjected to upward acting force in use, the cracks at the corners of the L-shaped guide blocks due to stress concentration are avoided, and the capability of the L-shaped guide blocks in bearing tensile force is improved.
As the preferable scheme in the invention, two ejector rods are fixed at one end of the fixed block far away from the L-shaped guide block, and guide rings matched with the ejector rods are fixed at the opposite sides of the two side guard plates close to the top ends, so that the fixed block can be more stable and can only extend or retract along the preset extending direction of the sliding chute.
As the preferable scheme in the invention, the outer walls of the two opposite sides of the middle disc are reserved with a plurality of anti-skid protrusions which are distributed in a staggered manner and are in a rectangular pyramid structure, and the U-shaped clamp is made of a spring steel material with good toughness, so that the angle can be accurately adjusted according to the tightness of the fastening bolt when the anti-skid locking device is used, and the long-term locking effect is improved.
As the preferable scheme in the invention, the middle part of one side of the U-shaped clamp far away from the middle disc is provided with the hexagonal countersink, and the size of the hexagonal countersink is matched with the outline size of the hexagonal nut to lock the hexagonal nut, so that when the U-shaped clamp is used, the fastening bolt is required to be reinforced, one end of the fastening bolt is required to be screwed, and if the locking effect is required to be improved, the opposite top nut is required to be added.
As a preferable scheme in the invention, a first positioning frame and a second positioning frame which are opposite in opening and symmetrical to each other are respectively fixed on the lower surfaces of the first fixing box and the second fixing box near the rear side, a fork rod and a female rod which are engaged with each other are respectively connected with the openings of the opposite ends of the first positioning frame and the second positioning frame in a sliding manner, and lengthened screw holes are respectively formed in the opposite ends of the fork rod and the female rod.
As the preferred scheme in the invention, the barrel bottoms of the first positioning frame and the second positioning frame are respectively provided with a round hole, the two round holes are respectively inserted with half screws which are symmetrical with each other, one threaded end of each half screw is in a lengthened screw hole on the side where the half screw is positioned, one end of each half screw far away from the threads is fixedly provided with two annular check rings, and the annular check rings are respectively positioned at two ends of the round holes, so that when the first fixing box and the second fixing box are straightened in use, two fork rods and a female rod which are in sliding connection with each other in the positioning frame can be pushed out simultaneously to complete engagement by reversely rotating the two half screws, and the first fixing box and the second fixing box are kept horizontal and are locked.
In summary, the beneficial effects in this scheme are:
1. According to the memory alloy anti-loosening connecting fastener, the compression springs are arranged between the bottom ends of the fixed blocks matched with the fixed blocks in the gaps in a sliding manner, so that when the memory alloy is pulled due to expansion of the memory alloy, the tension can be counteracted under the action of the two compression springs, and the original position relation can be restored after the states of the memory alloy at the two ends are stable;
2. the memory alloy anti-loosening connecting fastener is characterized in that the memory alloy anti-loosening connecting fastener is provided with the U-shaped clamp made of the middle disc and the spring steel material which are connected together through the rotation of the clamp, the clamp bolt is matched, the two memory alloys can be fixed at any angle, and the clamp bolt is only required to be loosened firstly and then the first fixing box and the second fixing box are rotated around the axis line where the clamp bolt is located and then fixed at a specified angle.
3. This kind of locking connecting fastener of memory alloy through setting up the straight locking device in the device bottom, can be when fixed box one and fixed box two after unbending when using, can release simultaneously two fork arms and female pole of sliding connection in the locating frame through two half screw rods of counter-rotating this moment and accomplish the interlock, and then let fixed box one and fixed box two keep the level and accomplish the locking.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic overall perspective view of the present invention;
FIG. 3 is a schematic structural view of the assembly of the fixing block and other components in the present invention;
FIG. 4 is a schematic view of the assembled structure of the U-shaped card of the present invention;
FIG. 5 is a schematic perspective view of the straight locking device of the present invention;
Fig. 6 is a schematic view of a partial cross-sectional structure of the straight locking device of the present invention.
In the figure: 1-fixed box I, 2-chute, 3-L-shaped guide block, 301-roller groove, 302-roller, 4-positioning frame I, 5-spring stop, 6-compression spring, 7-fork rod, 8-middle plate, 801-anti-slip boss, 9-female rod, 10-positioning frame II, 11-round angle, 12-fixed box II, 13-notch, 14-U-shaped card, 141-hexagonal countersink, 15-fastening bolt, 16-ejector rod, 17-guide ring, 18-screw hole, 19-fixed block, 20-side guard plate, 21-hexagonal nut and 22-half screw.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present embodiment
Referring to fig. 1-6, a memory alloy anti-loosening connecting fastener comprises a first fixing box 1 and a second fixing box 12, wherein a flat square tube structure is integrally formed in the inner cavity, gaps 13 which are symmetrical to each other are respectively formed in the front and rear sides of the first fixing box 1 and the second fixing box 12 near the top ends of the first fixing box 1 and the second fixing box 12, fixing blocks 19 are respectively connected in a sliding manner in the two gaps 13, a plurality of screw holes 18 are formed in the upper surfaces of the fixing blocks 19 and are used for installing memory alloy, side guard plates 20 are respectively fixed on the front and rear sides of the first fixing box 1 and the second fixing box 12, horizontal sliding grooves 2 are respectively formed in the opposite sides of the two side guard plates 20 in the first fixing box 1 near the end parts of the first fixing box 1, L-shaped guide blocks 3 matched with the sliding grooves 2 are respectively formed in the front and rear sides of the lower surfaces of the fixing blocks 19 near the middle parts of the fixing blocks, compression springs 5 are respectively fixed on one sides of the spring blocks 5 far away from the L-shaped guide blocks 3, a middle disc 8 and a U-shaped clamp 14 are respectively fixed on one side of the fixing box 1 and one side of the fixing box 12 near the other, and the two side of the middle disc 8 and the U-shaped clamp 14 are respectively hinged with each other, and the two side plates are respectively fixed on the other, and the two side blocks are respectively connected with a middle disc 8 and the U-shaped clamp 14 and the other are respectively, when the two side alloy is in a compression state is stable state, and the two end state can be expanded, and the memory alloy can be expanded when the two end state is stable and the tension state is stable, and the memory alloy can be expanded, and the compression state can be realized when the compression bolt is under the compression state and has a compression state and can be expanded; the connecting device can also realize the fixation of two memory alloys at any angle, and the fixing box I1 and the fixing box II 12 can be fixed again after the fastening bolt 15 is loosened firstly and then the fixing box I and the fixing box II 12 are rotated around the axis line where the fastening bolt 15 is positioned.
In the invention, the upper surface and the lower surface of one end of the L-shaped guide block 3 far away from the fixed block 19 are provided with the transverse roller grooves 301, the upper roller grooves 301 and the lower roller grooves 301 are respectively fixed with the rollers 302, and the number of the rollers 302 in the upper roller groove 301 and the lower roller groove 301 is one and two respectively, so that the functions of stabilizing and reducing friction are achieved.
The corners of the L-shaped guide blocks 3 are provided with fillets 11, so that when the memory alloy fixed on the fixed block 19 is acted on by upward force in use, the corners of the L-shaped guide blocks 3 are prevented from cracking due to stress concentration, and the capability of the L-shaped guide blocks 3 in bearing tensile force is improved.
Wherein, one end of the fixed block 19 far away from the L-shaped guide block 3 is fixed with two ejector rods 16, and one opposite side of the two side guard plates 20 is close to the top end and is fixed with a guide ring 17 matched with the ejector rods 16, so that the fixed block 19 can be more stable and can only extend or shrink along the extending direction of the preset chute 2.
Wherein, the both sides outer wall that middle dish 8 is on the back all reserves and has a plurality of crisscross distributions to be the protruding 801 of antiskid of pyramid shape structure, and U-shaped card 14 is made for the spring steel material that toughness is good to can adjust the angle accurately according to the elasticity of fastening bolt 15 when using, improved long-term locking effect.
The middle of one side of the U-shaped card 14 far away from the middle disc 8 is provided with a hexagonal countersink 141, and the size of the hexagonal countersink 141 is matched with the outline size of the hexagonal nut 21, so that the hexagonal nut 21 is locked, and when the fastening bolt 15 is required to be reinforced in use, only one end of the fastening bolt 15 needs to be screwed, and if the locking effect is required to be improved, a butt nut is added.
Wherein, the lower surface that is close to the rear side of fixed box one 1 and fixed box two 12 is fixed with respectively that the opening is relative and the locating frame one 4 and locating frame two 10 of mutual symmetry, and locating frame one 4 and locating frame two 10 relative one end opening do not sliding connection have fork arm 7 and female pole 9 of interlock each other, and the one end that fork arm 7 and female pole 9 are opposite to each other all opens the extension screw.
The barrel bottoms of the first positioning frame 4 and the second positioning frame 10 are respectively provided with a round hole, two round holes are respectively inserted with a half screw rod 22 which is symmetrical to each other, one threaded end of each half screw rod 22 is in a lengthened screw hole on the side where the half screw rod 22 is located, one end of each half screw rod 22, which is far away from the threads, is fixedly provided with two annular check rings, and the annular check rings are respectively located at two ends of the round holes, so that when the first fixing box 1 and the second fixing box 12 are straightened in use, the two half screw rods 22 can be reversely rotated to push out the fork rod 7 and the female rod 9 which are connected in the positioning frames simultaneously to complete engagement, and then the first fixing box 1 and the second fixing box 12 are kept horizontal and are locked.
Wherein, the first positioning frame 4, the second positioning frame 10, the fork rod 7 and the female rod 9 which are connected in a sliding way in the first positioning frame and the second positioning frame form a straight locking device.
Working principle: before use, the end parts of the two memory alloys to be connected are required to be punched according to the positions of screw holes 18 on the fixed block 19, then the two memory alloys are fixed on the fixed block 19 by screws, when the memory alloys are pulled due to the expansion of the memory alloys, the pulling force can be counteracted under the action of the two compression springs 6 at the moment, and after the states of the memory alloys at the two ends are stable, the original position relation is slowly restored; when the connecting device is required to realize the fixed connection of two memory alloys at any angle, the fixing box I1 and the fixing box II 12 are only required to be rotated around the axis line where the fastening bolt 15 is positioned after the fastening bolt 15 is loosened firstly and then are fixed again at a specified angle during operation; after the first fixing case 1 and the second fixing case 12 are straightened, the two half screws 22 are reversely rotated to push out the fork rod 7 and the female rod 9 which are slidably connected in the positioning frame at the same time to complete engagement, so that the first fixing case 1 and the second fixing case 12 are kept horizontal and locking is completed.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. The utility model provides a memory alloy locking connection fastener, including interior fixed box one (1) and fixed box two (12) that establish the cavity whole and be flat square tube structure, and fixed box one (1) and fixed box two (12) are close to the top and are opened respectively and have breach (13) of mutual symmetry, and all sliding connection has fixed block (19) in two breach (13), open the upper surface of fixed block (19) has a plurality of screw holes (18), be used for installing the memory alloy, a serial communication port, both sides all are fixed with side guard plate (20) around fixed box one (1) and fixed box two (12), and the relative one side of two side guard plates (20) in fixed box one (1) is close to the tip and all is opened horizontal spout (2), the lower surface of fixed block (19) is close to the front and back side of middle part all be fixed with L shape guide block (3) with spout (2) looks adaptation, and the lower surface middle part of fixed block (19) all is fixed with spring dog (5), one side that spring dog (5) kept away from L shape guide block (3) all is fixed with side spring (6), fixed with compression card one side (1) and fixed with U-shaped cartridge (14) and middle part (14) are close to each other between fixed disc (8) and intermediate disc (14) are fixed with respectively and are connected together in a plug-in manners, the end part of the fastening bolt (15) is sleeved with a hexagonal nut (21).
2. The memory alloy locking connecting fastener according to claim 1, wherein the upper surface and the lower surface of one end of the L-shaped guide block (3) far away from the fixed block (19) are provided with transverse roller grooves (301), rollers (302) are respectively fixed in the upper roller groove (301) and the lower roller groove (301), and the number of the rollers (302) in the upper roller groove (301) and the lower roller groove (301) is one and two respectively, so that the functions of stabilizing and reducing friction are achieved.
3. A memory alloy locking connection fastener as claimed in claim 2, wherein rounded corners (11) are provided at the corners of the L-shaped guide block (3).
4. The memory alloy anti-loosening connecting fastener according to claim 1, wherein two ejector rods (16) are fixed at one end of the fixing block (19) far away from the L-shaped guide block (3), and guide rings (17) matched with the ejector rods (16) are fixed at the opposite sides of the two side guard plates (20) close to the top ends.
5. The memory alloy anti-loosening connecting fastener according to claim 1, wherein a plurality of anti-loosening protrusions (801) distributed in a staggered mode are reserved on the outer walls of two opposite sides of the middle disc (8), and the U-shaped clamp (14) is made of a spring steel material with good toughness.
6. The memory alloy locking connecting fastener as claimed in claim 5, wherein a hexagonal countersink (141) is formed in the middle of a side of the U-shaped card (14) away from the middle plate (8), and the size of the hexagonal countersink (141) is matched with the outline size of the hexagonal nut (21).
7. The memory alloy locking connection fastener according to claim 1, wherein the lower surfaces of the first fixing box (1) and the second fixing box (12) are respectively fixed with a first positioning frame (4) and a second positioning frame (10) which are opposite in opening and symmetrical to each other near the rear side, the openings at one ends of the first positioning frame (4) and the second positioning frame (10) are respectively connected with a fork rod (7) and a female rod (9) which are meshed with each other in a sliding manner, and the opposite ends of the fork rod (7) and the female rod (9) are respectively provided with lengthened screw holes.
8. The memory alloy locking connection fastener according to claim 7, wherein round holes are formed in barrel bottoms of the first positioning frame (4) and the second positioning frame (10), half screws (22) which are symmetrical to each other are inserted into the round holes, one threaded end of each half screw (22) is screwed into an elongated screw hole on the side of the corresponding half screw, two annular check rings are fixed at one end, far away from the threads, of each half screw (22), and the annular check rings are respectively located at two ends of the round holes.
9. The memory alloy locking connecting fastener as claimed in claim 8, wherein the first positioning frame (4) and the second positioning frame (10) and the fork rod (7) and the female rod (9) which are slidably connected inside the first positioning frame and the second positioning frame form a straight locking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187139.8A CN114001088B (en) | 2021-10-12 | 2021-10-12 | Memory alloy anti-loosening connecting fastener |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187139.8A CN114001088B (en) | 2021-10-12 | 2021-10-12 | Memory alloy anti-loosening connecting fastener |
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| Publication Number | Publication Date |
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| CN114001088A CN114001088A (en) | 2022-02-01 |
| CN114001088B true CN114001088B (en) | 2024-04-26 |
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| CN202111187139.8A Active CN114001088B (en) | 2021-10-12 | 2021-10-12 | Memory alloy anti-loosening connecting fastener |
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| CN (1) | CN114001088B (en) |
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| CN114001088A (en) | 2022-02-01 |
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