CN213109851U - Split screw opening-closing type separating mechanism - Google Patents
Split screw opening-closing type separating mechanism Download PDFInfo
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- CN213109851U CN213109851U CN202022104103.6U CN202022104103U CN213109851U CN 213109851 U CN213109851 U CN 213109851U CN 202022104103 U CN202022104103 U CN 202022104103U CN 213109851 U CN213109851 U CN 213109851U
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Abstract
The utility model discloses a split screw open-close type separating mechanism, include: the mounting seat is mounted on the equipment body; the first rotating piece is rotatably connected to the mounting seat, and a first half screw hole is formed in one side surface of the first rotating piece; the second rotating piece is rotatably connected to the mounting seat, a second half screw hole is formed in one side face of the second rotating piece, and the first half screw hole and the second half screw hole are mutually attached to form a complete screw hole; the elastic piece is arranged on the first rotating piece and applies elasticity to the second rotating piece to enable the second rotating piece to rotate relative to the first rotating piece; the two ends of the limiting piece are respectively arranged on the first rotating piece and the second rotating piece so as to limit the first rotating piece and the second rotating piece to rotate relatively through the elastic piece, and the limiting piece can relieve the rotation limit of the first rotating piece and the second rotating piece; the separating bolt is in threaded connection with the first half screw hole and the second half screw hole and is used for mounting the separating piece on the mounting seat; when the separation is carried out, the limiting piece releases the rotation limitation, so that the first half screw hole and the second half screw hole are separated, and the separation bolt is disconnected. The mechanism is convenient to use, high in reliability, high in stability, low in cost and reusable.
Description
Technical Field
The utility model belongs to the technical field of separating mechanism, especially, relate to a split screw open-close type separating mechanism.
Background
With the development of micro-nano technology, spacecraft gradually becomes more precise and miniaturized, and micro-nano satellites gradually replace some space tasks of traditional large satellites. Due to the compactness requirement of the micro-nano satellite, the solar sailboard is folded and tightly pressed on the satellite body through the separating mechanism, and when the solar sailboard needs to be unfolded, the solar sailboard is disconnected from the satellite body through the separating mechanism so as to release the solar sailboard.
At present, the sailboard of the micro-nano satellite is generally connected and pressed on a satellite body through a titanium rod, and the titanium rod is cut off through a priming system cutter to release the sailboard.
The scheme adopted by the prior art is higher in cost, the titanium rod and the initiating explosive device cutter are disposable articles, and multiple sets of titanium rod and initiating explosive device cutters are needed after multiple use. In the process of explosion of the initiating explosive device cutter and cutting off the titanium rod, the product has larger impact force, which causes adverse effect on peripheral single machines, in particular to micro-nano satellites with smaller size. The use of initiating explosive devices also presents certain safety risks, requires special protection and careful operation, and also brings inconvenience and low efficiency in operation. And the conventional titanium rod and initiating explosive device cutter are too large in size, so that the compressing and releasing requirements of the micro-nano satellite sailboard cannot be met.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model aims at providing a split screw opening and closing type separating mechanism, this mechanism convenient to use, reliability are high, stability is high, with low costs, and repeatedly usable.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a split screw opening and closing type separating mechanism, comprising:
the mounting seat is mounted on the equipment body;
the first rotating piece is rotatably connected to the mounting seat, and a first half screw hole is formed in one side surface of the first rotating piece;
the second rotating piece is rotatably connected to the mounting seat, a second half screw hole is formed in one side surface of the second rotating piece, and the first half screw hole and the second half screw hole are mutually attached to form a complete screw hole;
the elastic piece is arranged on the first rotating piece and applies elasticity to the second rotating piece so as to enable the second rotating piece to rotate relative to the first rotating piece;
the two ends of the limiting piece are respectively arranged on the first rotating piece and the second rotating piece so as to limit the first rotating piece and the second rotating piece from rotating relatively through the elastic piece, and the limiting piece can relieve the rotation limitation on the first rotating piece and the second rotating piece;
the separation bolt is in threaded connection with the first half screw hole and the second half screw hole and is used for installing a separation piece on the installation seat;
when the separation is carried out, the limiting part releases the rotation limiting, the first rotating part and the second rotating part rotate relatively to separate the first half screw hole and the second half screw hole, and the separation bolt is disconnected to separate the separating part from the mounting seat.
According to the utility model discloses an embodiment, the locating part is memory alloy pin puller, the second rotating member is equipped with the draw-in groove, memory alloy pin puller install in first rotating member and its pin joint in the draw-in groove.
According to the utility model discloses an embodiment, including being used for the installation the connecting piece of separator, the separation bolt wears to locate the connecting piece with the mount pad, with connecting piece locking install in the mount pad.
According to the utility model discloses an embodiment, the connecting piece is located including the cover first sleeve and the second sleeve of separation bolt, just first sleeve with the second sleeve all is equipped with the flange, the separator install in the flange.
According to the utility model discloses an embodiment, first sleeve with the adjacent end of second sleeve is equipped with first recess and first arch respectively, first arch inserts first recess.
According to the utility model discloses an embodiment, the second sleeve with the mount pad is adjacent, just the second sleeve with the adjacent end of mount pad is equipped with second recess and second arch respectively, the second arch is inserted the second recess.
According to the utility model discloses an embodiment, be the adjusting block of cambered surface including one end, first sleeve with the head of separation bolt adjacent and this adjacent end be equipped with adjusting block cambered surface assorted cambered surface groove, the adjusting block is located the cambered surface groove, just the separation bolt is worn to locate the adjusting block.
According to the utility model discloses an embodiment, the elastic component is the spring, first rotating member is equipped with the mounting hole, the spring is located mounting hole and its one end with the second rotating member is contradicted.
According to the utility model discloses an embodiment, link firmly including one end in the pivot of mount pad, first rotating member with the equal cover of second rotating member is located the pivot just passes through the pivot rotate connect in the mount pad.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art and have following advantage and positive effect:
(1) the embodiment of the utility model provides an in set up mount pad, first rotating member, second rotating member, elastic component, locating part and separation bolt, it is spacing to remove to rotate through the locating part, makes first half screw and the half screw hole of second on first rotating member and the second rotating member part, and the separation bolt is throw off the connection to make separation member and mount pad separation. The mechanism is convenient to use, only the rotation limit is required to be released through the limit piece, and the mechanism has no impact force during separation, high reliability and high stability; and the device can be repeatedly used, reset again and then screw in the separation bolt, so that the cost is low, and the device can be widely applied to satellite teaching kits and the like.
(2) The embodiment of the utility model provides an in the locating part is memory alloy pin puller, only need with memory alloy pin puller circular telegram can remove rotatory spacing, and memory alloy can reset after the outage to make can used repeatedly.
(3) The embodiment of the utility model provides an in including the connecting piece that is used for installing the separator, the first sleeve and the second sleeve of separation bolt are located including the cover to the connecting piece, make the installation of separator more convenient.
(4) In the embodiment of the utility model, the adjacent ends of the first sleeve and the second sleeve are respectively provided with a first groove and a first bulge, and the first bulge is inserted into the first groove; the second sleeve is adjacent to the mounting seat, a second groove and a second protrusion are respectively arranged at the adjacent ends of the second sleeve and the mounting seat, and the second protrusion is inserted into the second groove. Make first sleeve and second sleeve's anti-shear effect better, prevent that the separator from producing the shearing force to the separation screw rod, make its damage. And radial play of the first sleeve and the second sleeve can be prevented.
(5) The embodiment of the utility model provides an in set up the adjusting block for the locking pressure adaptability of adjusting block accessible separation bolt slides in the cambered surface groove in order to adjust the position of separation bolt when installing the separation bolt, makes the separation bolt can twist smoothly in first half screw and the half screw of second.
Drawings
The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:
FIG. 1 is a side view of the split screw opening and closing type separating mechanism of the present invention;
fig. 2 is a top view of a split screw opening and closing type separating mechanism of the present invention;
fig. 3 is a first sectional view of a split screw opening and closing type separating mechanism of the present invention;
FIG. 4 is a sectional view of a split screw opening and closing type separating mechanism of the present invention;
fig. 5 is an exploded view of a split screw opening and closing type separating mechanism of the present invention;
fig. 6 is a schematic view of a split screw opening-closing type separating mechanism mounting seat of the present invention;
fig. 7 is a schematic view of a first rotating member of a split screw opening and closing type separating mechanism of the present invention;
fig. 8 is a schematic view of a second rotating member of a split screw opening and closing type separating mechanism of the present invention;
fig. 9 is a schematic view of a memory alloy pin puller of a split screw opening-closing separating mechanism of the present invention.
Description of reference numerals:
1: a mounting seat; 2: a first rotating member; 3: a first half screw hole; 4: a second rotating member; 5: a second half screw hole; 6: separating the bolt; 7: a memory alloy pin puller; 8: a card slot; 9: a pin; 10: a first sleeve; 11: a second sleeve; 12: a flange; 13: an adjusting block; 14: a spring; 15: mounting holes; 16: a rotating shaft; 17: a first protrusion; 18: a second protrusion; 19: a first through hole; 20: a side groove; 21: a flange; 22: a second through hole; 23: a baffle plate; 24: a third through hole; 25: and installing a threaded hole.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It is to be noted that the drawings are in a very simplified form and are not to be construed as precise ratios as are merely intended to facilitate and distinctly illustrate the embodiments of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
Referring to fig. 1 to 9, the core of the present invention is to provide a split screw opening and closing type separating mechanism, which comprises a mounting base 1, a first rotating member 2, a second rotating member 4, an elastic member, a limiting member and a separating bolt 6. The mounting seat 1 is mounted on the equipment body; the first rotating piece 2 is rotatably connected to the mounting seat 1, and a first half screw hole 3 is formed in one side surface of the first rotating piece; the second rotating piece 4 is rotatably connected to the mounting seat 1, a second half screw hole 5 is formed in one side surface of the second rotating piece, and the first half screw hole 3 and the second half screw hole 5 are mutually attached to form a complete screw hole; the elastic piece is arranged on the first rotating piece 2 and applies elasticity to the second rotating piece 4 to enable the second rotating piece to rotate relative to the first rotating piece 2; two ends of the limiting piece are respectively arranged on the first rotating piece 2 and the second rotating piece 4 to limit the relative rotation of the first rotating piece and the second rotating piece through the elastic piece, and the limiting piece can relieve the rotation limitation of the first rotating piece and the second rotating piece; the separation bolt 6 is screwed into the first half screw hole 3 and the second half screw hole 5, and is used for mounting the separation member to the mount 1.
When the separation is carried out, the limiting part releases the rotation limiting, the first rotating part 2 and the second rotating part 4 rotate relatively to separate the first half screw hole 3 from the second half screw hole 5, and the separation bolt 6 is disconnected to separate the separation part from the mounting seat 1.
The split screw hole opening-closing type separating mechanism is convenient to use, only the rotation limit of the second rotating piece 4 is released through the limiting piece, and the separating mechanism is free of impact force, high in reliability and high in stability; and can be repeatedly used, reset again and screw in separation bolt 6 can, make with low costs, but wide application in fields such as satellite teaching external member.
The following explains the split screw opening-closing type separating mechanism of the utility model in detail:
referring to fig. 6, the mounting base 1 is formed by bending an iron piece, has mounting surfaces formed at both ends thereof, and is bolted to an apparatus body, in this embodiment, a satellite body, via the mounting surfaces.
Referring to fig. 2, 4, 7 and 8, the first rotating member 2 is provided with a first through hole 19, and the first rotating member 2 is provided with a side groove 20 at the position, the first through hole 19 is divided into two parts, a flange 21 is formed at one side of the second rotating member 4, a second through hole 22 is formed on the flange 21, and the flange 21 of the second rotating member 4 is embedded into the side groove 20 of the first rotating member 2, so that the first through hole 19 and the second through hole 22 are concentric. And the structures of the first rotating member 2 and the second rotating member 4 at the first through hole 19 and the second through hole 22 are provided with corresponding arc sliding surfaces, so that the first rotating member 2 and the second rotating member 4 can smoothly rotate relatively, and when the first rotating member 2 and the second rotating member 4 rotate relatively, the two arc sliding surfaces are relatively attached and slide.
The hinge device comprises a rotating shaft 16, one end of the rotating shaft is fixedly connected with the mounting seat 1, the first rotating part 2 and the second rotating part 4 are respectively sleeved on the rotating shaft 16 through a first through hole 19 and a second through hole 22, the first rotating part 2 and the second rotating part 4 are connected together through the rotating shaft 16 and can rotate relative to the mounting seat 1, and therefore a hinge revolute pair is formed. In this embodiment, 16 one ends of pivot are equipped with the screw thread, are equipped with installation screw hole 25 on the mount pad 1, and 16 threaded connection of pivot are in installation screw hole 25 to convenient installation dismantlement.
One side of the first rotating member 2 is provided with a first half screw hole 3, one side of the second rotating member 4 opposite to the first half screw hole 3 is provided with a second half screw hole 5, and the first half screw hole 3 and the second half screw hole 5 are mutually attached to form a complete screw hole.
In this embodiment, the elastic member is a spring 14, the first rotating member 2 is provided with a through mounting hole 15 at a side surface provided with the first half screw hole 3, the spring 14 is disposed in the mounting hole 15, and one end of the spring is abutted against the second rotating member 4, a baffle 23 is mounted at one end of the mounting hole 15 away from the second rotating member 4 through a bolt, the other end of the spring 14 is abutted against the baffle 23, the baffle 23 restrains the spring 14 in the mounting hole 15, that is, the spring 14 is in a compressed state, applies an elastic force to the second rotating member 4 to rotate the second rotating member relative to the first rotating member 2, and the first rotating member 2 is subjected to a reaction force of the elastic force and also rotates relative to the second rotating member 4, that is, the first rotating member 2 and the second rotating member 4 are rotated away from each other at the same time.
In this embodiment, the limiting member is a memory alloy pin extractor 7, a third through hole 24 is disposed at one side of the first rotating member 2 adjacent to the first half screw hole 3, the memory alloy pin extractor 7 is mounted on the side wall of the first rotating member 2 through a bolt, and the pin 9 thereof is inserted into the third through hole 24. A clamping groove 8 is formed in one side surface of the second rotating member 4 opposite to the pin 9, and the pin 9 is clamped in the clamping groove 8 to limit the relative rotation of the first rotating member 2 and the second rotating member 4 through the spring 14.
The separation bolt 6 is arranged on the mounting seat 1 in a penetrating mode and is connected to a complete screw hole formed by the first half screw hole 3 and the second half screw hole 5 in a threaded mode.
When the separating part installed on the installation seat 1 needs to be separated, the memory alloy pin puller 7 is electrified, the pin 9 contracts after the electrification and is withdrawn from the clamping groove 8, the limit of the first rotating part 2 and the second rotating part 4 disappears, the first rotating part 2 and the second rotating part 4 are simultaneously far away from each other to rotate, so that the first half screw hole 3 and the second half screw hole 5 are mutually separated, the threaded connection pair of the separating bolt 6 disappears, namely, the separating bolt 6 is separated from the installation seat 1, and the separating part is separated from the installation seat 1.
Furthermore, the mounting structure also comprises a connecting piece for mounting the separating piece, and the separating bolt 6 is arranged through the connecting piece to be locked and mounted on the mounting seat 1.
Specifically, the connecting member includes a first sleeve 10 and a second sleeve 11 sleeved on the separation bolt 6, the first sleeve 10 is disposed above the second sleeve 11, that is, the first sleeve 10 is closer to the head of the separation bolt 6, and the second sleeve 11 is closer to the mounting seat 1. Flanges 12 are arranged at the upper end of the first sleeve 10 and the lower end of the second sleeve 11, the separating piece is mounted on the flanges 12, the separating piece in the embodiment is a satellite solar sailboard, and two sailboards are respectively mounted on the two flanges 12.
The adjacent ends of the first sleeve 10 and the second sleeve 11 are respectively provided with a first groove and a first protrusion 17, and the first protrusion 17 is inserted into the first groove. The first groove is formed by upwardly recessing the lower end of the first sleeve 10, and the first protrusion 17 is formed by upwardly protruding the second sleeve 11. The upper end of the mounting seat 1 is provided with a second protrusion 18, the lower end of the second sleeve 11 is provided with a second groove which is concave upwards, and the second protrusion 18 is inserted into the second groove. Through setting up first recess and first arch 17, second recess and second arch 18 for the anti-shear effect of first sleeve 10 and second sleeve 11 is better, prevents that the separator from producing the shearing force to the separation screw rod, makes its damage, and can prevent radially rocking of first sleeve 10 and second sleeve 11, also more convenience when installing first sleeve 10 and second sleeve 11.
The upper end of the first sleeve 10 is also provided with a cambered surface groove which is concave downwards, an adjusting block 13 which is matched with the cambered surface groove is arranged in the cambered surface groove, the upper end of the adjusting block 13 is a plane, the lower end of the adjusting block is a cambered surface, namely the adjusting block 13 is hemispherical, and the separating bolt 6 penetrates through the adjusting block 13. The adjusting block 13 enables the adjusting block 13 to slide in the arc groove by the locking pressure adaptability of the separation bolt 6 when the separation bolt 6 is installed so as to adjust the position of the separation bolt 6, so that the separation bolt 6 can be smoothly screwed into the first half screw hole 3 and the second half screw hole 5, namely, the adjusting block 13 realizes the automatic correction of the locking pressure.
The working process of the present invention is further explained as follows:
when the separating piece needs to be separated from the mounting seat 1, the memory alloy pin puller 7 is electrified, the pin 9 of the memory alloy pin puller is contracted after the electricity is electrified and is withdrawn from the clamping groove 8, the limit of the first rotating piece 2 and the second rotating piece 4 disappears, the first rotating piece 2 and the second rotating piece 4 are simultaneously far away from each other and rotate through the elasticity of the spring 14, so that the first half screw hole 3 and the second half screw hole 5 are separated from each other, the threaded connection pair of the separating bolt 6 disappears, namely the separating bolt 6 is separated from the mounting seat 1, and the first sleeve 10 and the second sleeve 11 are disconnected from the mounting seat 1, so that the separating piece is separated from the mounting seat 1.
When the separating piece needs to be reinstalled on the mounting seat 1, the first rotating piece 2 and the second rotating piece 4 are rotated and reset, the memory alloy pin puller 7 is reset, and the pin 9 is clamped into the clamping groove 8 of the second rotating piece 4 again. The baffle plate 23 is removed, the spring 14 is pressed into the mounting hole 15 again, and the baffle plate 23 is mounted again by bolts. And then the separation bolt 6 is inserted into the adjusting block 13, the first sleeve 10, the second sleeve 11 and the mounting seat 1 again, and is connected with the first half screw hole 3 and the second half screw hole 5 again in a threaded manner, so that the first sleeve 10 and the second sleeve 11 are locked with the mounting seat 1, and the reinstallation is completed.
The utility model provides a split screw open-close type separating mechanism, simple structure is reliable, installs convenient high-efficient, has repetitious usage's ability, has reduced use and test cost. Meanwhile, impact is avoided during separation and release, the influence on peripheral single machines is avoided, safety and reliability are realized, and the problems of static electricity prevention and the like do not need to be considered. The method meets the requirement of the low-cost micro-nano satellite solar panel on the function of compression and release.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, the changes are still within the scope of the present invention if they fall within the scope of the claims and their equivalents.
Claims (9)
1. The utility model provides a split screw open-close type separating mechanism which characterized in that includes:
the mounting seat is mounted on the equipment body;
the first rotating piece is rotatably connected to the mounting seat, and a first half screw hole is formed in one side surface of the first rotating piece;
the second rotating piece is rotatably connected to the mounting seat, a second half screw hole is formed in one side surface of the second rotating piece, and the first half screw hole and the second half screw hole are mutually attached to form a complete screw hole;
the elastic piece is arranged on the first rotating piece and applies elasticity to the second rotating piece so as to enable the second rotating piece to rotate relative to the first rotating piece;
the two ends of the limiting piece are respectively arranged on the first rotating piece and the second rotating piece so as to limit the first rotating piece and the second rotating piece from rotating relatively through the elastic piece, and the limiting piece can relieve the rotation limitation on the first rotating piece and the second rotating piece;
the separation bolt is in threaded connection with the first half screw hole and the second half screw hole and is used for installing a separation piece on the installation seat;
when the separation is carried out, the limiting part releases the rotation limiting, the first rotating part and the second rotating part rotate relatively to separate the first half screw hole and the second half screw hole, and the separation bolt is disconnected to separate the separating part from the mounting seat.
2. The split screw opening and closing type separating mechanism according to claim 1, wherein the limiting member is a memory alloy pin puller, the second rotating member is provided with a clamping groove, the memory alloy pin puller is mounted on the first rotating member, and the pin of the memory alloy pin puller is clamped in the clamping groove.
3. The split screw opening and closing type separating mechanism according to claim 1, comprising a connecting piece for mounting the separating piece, wherein the separating bolt penetrates through the connecting piece and the mounting seat to lock and mount the connecting piece to the mounting seat.
4. The split screw opening and closing type separating mechanism according to claim 3, wherein the connecting member comprises a first sleeve and a second sleeve which are sleeved on the separating bolt, the first sleeve and the second sleeve are provided with flanges, and the separating member is mounted on the flanges.
5. The split screw opening and closing type separating mechanism according to claim 4, wherein the adjacent ends of the first sleeve and the second sleeve are respectively provided with a first groove and a first protrusion, and the first protrusion is inserted into the first groove.
6. The split screw opening and closing type separating mechanism according to claim 4, wherein the second sleeve is adjacent to the mounting seat, and the adjacent ends of the second sleeve and the mounting seat are respectively provided with a second groove and a second protrusion, and the second protrusion is inserted into the second groove.
7. The split screw opening and closing type separating mechanism according to claim 4, comprising an adjusting block with one end being an arc surface, wherein the first sleeve is adjacent to the head of the separating bolt, an arc surface groove matched with the arc surface of the adjusting block is arranged at the adjacent end, the adjusting block is arranged in the arc surface groove, and the separating bolt penetrates through the adjusting block.
8. The split screw opening and closing type separating mechanism according to claim 1, wherein the elastic member is a spring, the first rotating member is provided with a mounting hole, the spring is provided in the mounting hole, and one end of the spring abuts against the second rotating member.
9. The split screw opening and closing type separating mechanism according to claim 1, comprising a rotating shaft having one end fixedly connected to the mounting seat, wherein the first rotating member and the second rotating member are both sleeved on the rotating shaft and rotatably connected to the mounting seat through the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022104103.6U CN213109851U (en) | 2020-09-23 | 2020-09-23 | Split screw opening-closing type separating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022104103.6U CN213109851U (en) | 2020-09-23 | 2020-09-23 | Split screw opening-closing type separating mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN213109851U true CN213109851U (en) | 2021-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022104103.6U Active CN213109851U (en) | 2020-09-23 | 2020-09-23 | Split screw opening-closing type separating mechanism |
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| CN (1) | CN213109851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113955155A (en) * | 2021-10-26 | 2022-01-21 | 北京微纳星空科技有限公司 | Split nut type unlocking and releasing device and reusable unlocking and releasing device |
-
2020
- 2020-09-23 CN CN202022104103.6U patent/CN213109851U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113955155A (en) * | 2021-10-26 | 2022-01-21 | 北京微纳星空科技有限公司 | Split nut type unlocking and releasing device and reusable unlocking and releasing device |
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