CN214477878U - Satellite-borne foldable and unfoldable yagi antenna oscillator fixing device - Google Patents
Satellite-borne foldable and unfoldable yagi antenna oscillator fixing device Download PDFInfo
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- CN214477878U CN214477878U CN202120303454.1U CN202120303454U CN214477878U CN 214477878 U CN214477878 U CN 214477878U CN 202120303454 U CN202120303454 U CN 202120303454U CN 214477878 U CN214477878 U CN 214477878U
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Abstract
The utility model provides a star carries yagi antenna oscillator fixing device that can unfold, this fixing device comprises the fixed part of oscillator and the feed part of oscillator. The fixing part of the oscillator comprises an upper U-shaped antenna mounting seat and a lower U-shaped antenna mounting seat, and the upper U-shaped mounting seat and the lower U-shaped mounting seat are installed in a butt joint mode and are tightly hooped on the connecting rod. The feeding part feeds electricity to the oscillator by adopting an open cable assembly, and an inner conductor and an outer conductor of the open cable assembly are respectively connected with the oscillator. The utility model has the advantages that: the installation requirements of the arc-shaped antenna oscillator can be met, the installation reliability is high, each group of antennas are symmetrically distributed on two sides of the connecting rod, and an insulating structure is designed, so that short circuit can be prevented to the greatest extent; the antenna oscillator adopts the opening type cable assembly to feed, and adopts the holding screw to fix the cable assembly, guarantees feed structure safe and reliable.
Description
Technical Field
The utility model relates to an aerospace antenna especially relates to a star carries yagi antenna oscillator fixing device that can unfold.
Background
The development of an aerospace antenna as the most important information receiving apparatus is receiving more and more attention from various countries. The foldable mechanism is the most commonly used mechanism, and has the characteristic of being capable of being folded to a smaller envelope size and obtaining a larger structural size after being unfolded, so that the foldable mechanism has a very bright application prospect in the field of satellite-borne large-aperture antennas. In the later period of the 20 th century and the 60 th year, along with the rapid development of aerospace technology in all countries, the foldable mechanism is rapidly developed into a novel aerospace mechanism due to the advantages of high specific strength, high specific stiffness, ultralow thermal expansion coefficient and high geometric stability, and is widely applied to the field of aerospace by all countries. For small carrying platforms, the requirement on the envelope size of the satellite is more severe. The antenna is folded to the minimum size before being launched into space, after the satellite reaches a preset orbit, the antenna is gradually unfolded according to the design requirement through command control, and the antenna is self-locked and kept in a working state after being completely unfolded. The fixing device of the antenna oscillator structure directly determines the reliability of the satellite-borne foldable yagi antenna and is a key part of the satellite-borne foldable yagi antenna.
Considering the installation reliability and the cable interface safety of the foldable yagi antenna oscillator, a satellite-borne foldable yagi antenna oscillator fixing device suitable for an arc antenna oscillator needs to be designed urgently.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a star carries yagi antenna element fixing device that can unfold.
The utility model provides a star carries yagi antenna oscillator fixing device that can unfold, this fixing device comprises the fixed part of oscillator and the feed part of oscillator. The fixing part of the oscillator comprises an upper U-shaped antenna mounting seat and a lower U-shaped antenna mounting seat, and the upper U-shaped mounting seat and the lower U-shaped mounting seat are installed in a butt joint mode and are tightly hooped on the connecting rod. The feeding part feeds electricity to the oscillator by adopting an open cable assembly, and an inner conductor and an outer conductor of the open cable assembly are respectively connected with the oscillator. The upper U-shaped antenna mounting seat and the lower U-shaped antenna mounting seat tightly press the two-stage oscillators of the antenna, the upper U-shaped antenna mounting seat and the lower U-shaped antenna mounting seat are tightly hooped and fixed on the connecting rod, and meanwhile, a wiring groove and a fixing hole are reserved on the U-shaped mounting seat; the open type cable assembly is a two-stage vibrator feed coaxial cable, the inner conductor and the outer conductor are led out independently by the open end of the cable, penetrate through the wiring grooves of the upper U-shaped antenna mounting seat and the lower U-shaped antenna mounting seat and are connected with the two-stage vibrators; the fastening screw passes through the fixing holes of the upper, lower, upper and lower U-shaped antenna mounting seats and fixes the open cable assembly. The utility model has the advantages that: the installation requirements of the arc-shaped antenna oscillator can be met, the installation reliability is high, each group of antennas are symmetrically distributed on two sides of the connecting rod, and an insulating structure is designed, so that short circuit can be prevented to the greatest extent; the antenna oscillator adopts the opening type cable assembly to feed, and adopts the holding screw to fix the cable assembly, guarantees feed structure safe and reliable.
As a further improvement of the utility model, the antenna element is arc cross-section structure, go up the U-shaped antenna mount pad and install the insulating protection architecture with the insulating partition of antenna element between the lower U-shaped antenna mount pad, insulating protection architecture includes concave insulating gasket and protruding insulating gasket, concave insulating gasket with the unsmooth butt joint of protruding insulating gasket is laminated and is pressed from both sides tightly the antenna element.
As a further improvement, the antenna oscillator is of an arc-shaped cross section structure, and the arc-shaped structure can be better laminated with the connecting rod, so that the occupied space of the antenna oscillator is smaller under the furled state, and the constraint force can be better distributed by the plane.
As a further improvement of the utility model, the concave insulating spacer is connected with the convex insulating spacer through a fastener; a fastener insulation protection structure for the fastener to penetrate through and insulate and separate the fastener and the antenna oscillator is arranged at the joint between the concave insulation gasket and the convex insulation gasket; the fastener insulation protection structure comprises a coaxial annular boss and an annular groove, and the annular boss is inserted into the annular groove; the antenna oscillator is provided with a fastener avoiding through hole; the annular boss penetrates through the fastener avoiding through hole, the fastener is installed in the annular boss, the fastener is preferably a screw, and short circuit caused by contact of the screw and the antenna oscillator can be avoided.
As a further improvement, be equipped with the confession on concave insulating pad piece or the protruding insulating pad piece the recess is dodged to the radio frequency cable that the inside and outside conductor of opening type cable assembly passed for inside and outside conductor of opening type cable assembly avoids forming great gap between unsmooth insulating pad piece when guaranteeing reliable spiro union with the antenna element.
As a further improvement, be equipped with the bolt hole that is used for installing concave insulating pad piece or protruding insulating pad piece on the lower U-shaped antenna mount pad, the bolt hole sets up within the recess.
As a further improvement, the insulating protection structure that adjacent two sets of antenna elements correspond's installation opposite direction can guarantee that two sets of antenna elements radian direction is the same.
As a further improvement, be equipped with the radio frequency cable mounting hole on going up the U-shaped antenna mount pad or the lower U-shaped antenna mount pad, it presss from both sides tightly to be equipped with on the opening type cable subassembly mounting hole radio frequency cable's the gasket that compresses tightly.
As a further improvement of the utility model, thereby on opening type cable subassembly was fixed in the U-shaped antenna mount pad, it was fixed with the cable to compress tightly the gasket through the holding screw of side. The inner conductor and the outer conductor led out from the open type cable assembly are respectively in threaded connection with the antenna oscillators on two sides, and the influence of space navigation temperature change on welding spots is avoided.
As a further improvement of the utility model, the inner and outer conductors that the radio frequency cable was drawn forth are respectively through the antenna element spiro union of binding post and connecting rod both sides.
As the utility model discloses a further improvement, lower U-shaped antenna mount pad design is L shape structure, thereby the screw at accessible pretension here realizes the clamp of U-shaped antenna mount pad from top to bottom, and two bolt hole designs that are used for installing insulating gasket will be down for avoiding excessively cooperating simultaneously for the groove structure on the U-shaped antenna mount pad to eliminate here screw to the radial constraint effect of connecting rod. Meanwhile, the screws for clamping the two insulating gaskets are independently installed and directly contact with the insulating gaskets, so that interference stress in the clamping process of the upper and lower U-shaped antenna mounting seats can be avoided.
As a further improvement of the utility model, the lower U-shaped antenna mounting seat plays limiting displacement on being fixed in the connecting rod through holding screw.
The utility model has the advantages that: the installation requirements of the arc-shaped antenna oscillators can be met, the installation reliability is high, each group of antenna oscillators are symmetrically distributed on two sides of the connecting rod, and an insulating structure is designed, so that short circuits can be prevented to the greatest extent; the antenna oscillator adopts the opening type cable assembly to feed, and adopts the holding screw to fix the cable assembly, guarantees feed structure safe and reliable.
Drawings
Fig. 1 is a schematic view of the utility model of a satellite-borne foldable yagi antenna element fixing device.
Fig. 2 is a schematic diagram of a concave insulating spacer and a convex insulating spacer of the satellite-borne foldable yagi antenna element fixing device of the present invention.
Detailed Description
The present invention will be further described with reference to the following description and embodiments.
Referring to fig. 1, a schematic diagram of the satellite-borne foldable yagi antenna element fixing device of the present invention is shown. As shown in the figure, a satellite-borne foldable yagi antenna element fixing device comprises an antenna element 300, an upper U-shaped antenna mounting seat 101, a lower U-shaped antenna mounting seat 102, a convex insulating gasket 103, a concave insulating gasket 104, a radio frequency cable 202 and a compression gasket 201. Wherein each two antenna elements 300 are grouped. Install between last U-shaped antenna mount pad 101, lower U-shaped antenna mount pad 102, separate through insulating gasket between antenna element 300 and the U-shaped antenna mount pad mutually, and two antenna elements install respectively in connecting rod 400 both sides and separate open type cable assembly 202 tie point, avoid causing the short circuit.
Preferably, the utility model discloses antenna element 300 is the arc cross-section, and the camber shape can laminate better with connecting rod 400, makes its occupation space under the folded state less and plane can be with the better distribution of constraining force.
Preferably, the utility model discloses on opening type cable assembly 202 was fixed in last U-shaped antenna mount pad 101, thereby it is fixed with the cable to compress tightly gasket 201 through the holding screw of side. The inner conductor and the outer conductor led out from the cable are respectively in threaded connection with the antenna oscillators 300 on two sides, and the influence of space navigation temperature change on welding spots is avoided.
Preferably, the utility model discloses U-shaped antenna mount 102 designs for L shape structure down, thereby the screw at accessible pretension here realizes from top to bottom the U-shaped antenna mount to the clamp of connecting rod 400 tightly, and two bolt hole designs that are used for installing insulating gasket will be down for avoiding excessively cooperating simultaneously for the groove structure on the U-shaped antenna mount 102 to eliminate here screw to the radial constraint effect of connecting rod. Meanwhile, the screws 105 for clamping the two insulating gaskets are independently installed and directly contact with the insulating gaskets, so that interference stress in the clamping process of the upper and lower U-shaped antenna installation seats can be avoided.
Preferably, the utility model discloses lower U-shaped antenna mount 102 plays limiting displacement on being fixed in connecting rod 400 through holding screw.
Preferably, the utility model discloses another group of antenna element need be installed insulating gasket according to opposite direction with this and guarantee that two sets of antenna element radian direction are the same when the installation.
Referring to fig. 2, it is shown that the utility model discloses curved antenna element 300 presss from both sides between convex insulating pad 103 and concave insulating pad 104, and insulating pad designs into the shape with arc antenna element matched with, and there is cyclic annular boss cooperation structure 1031 in mounting hole department design simultaneously to avoid connecting screw and antenna element to contact and cause the short circuit.
Preferably, the utility model discloses still the design has on the insulating gasket with opening type cable assembly 202 circular binding post matched with recess 1041 for cable binding post and antenna element avoid forming great gap between unsmooth insulating gasket when guaranteeing reliable spiro union.
The utility model provides a pair of star carries yagi antenna element fixing device that can unfold, can satisfy the installation requirement of arc antenna element. In order to meet the safety of the cable interface, the antenna oscillator fixing device adopts a screw connection mode, and an independent pressing structure is adopted at a pressing point. A pair of screw connection points of each group of antennas are distributed on two sides of the connecting rod, and an insulation structure is designed to prevent short circuit to the maximum extent.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (5)
1. The utility model provides a star carries yagi antenna element fixing device that can unfold, its characterized in that: the antenna comprises an upper U-shaped antenna mounting seat and a lower U-shaped antenna mounting seat which are butted and clamped on a connecting rod up and down, and also comprises an open type cable assembly and an antenna oscillator; every two antenna oscillators are in one group and are arranged between the upper U-shaped antenna mounting seat and the lower U-shaped antenna mounting seat in an insulating mode, and the two antenna oscillators in the same group are arranged on two sides of the connecting rod respectively; the fastening screw penetrates through the fixing holes of the upper U-shaped antenna mounting seat and the lower U-shaped antenna mounting seat and fixes the open-type cable assembly.
2. The satellite-borne foldable yagi antenna element fixing device according to claim 1, wherein: the open type cable assembly comprises a coaxial cable with two-stage oscillator feed, an inner conductor and an outer conductor are led out independently through the open end of the cable, penetrate through the wiring grooves of the upper U-shaped antenna mounting seat and the lower U-shaped antenna mounting seat and are connected with the two-stage antenna oscillators.
3. The satellite-borne foldable yagi antenna element fixing device according to claim 1, wherein: the antenna oscillator is arc cross-section structure, go up U-shaped antenna mount pad and install the insulating protection architecture with the insulating partition of antenna oscillator down between the U-shaped antenna mount pad, insulating protection architecture includes concave insulating pad and protruding insulating pad, concave insulating pad with protruding insulating pad unsmooth butt joint and laminating are pressed from both sides tightly antenna oscillator.
4. The satellite-borne foldable yagi antenna element fixing device according to claim 3, wherein: the concave insulating gasket is connected with the convex insulating gasket through a fastener; a fastener insulation protection structure for the fastener to penetrate through and insulate and separate the fastener and the antenna oscillator is arranged at the joint between the concave insulation gasket and the convex insulation gasket; the fastener insulation protection structure comprises a coaxial annular boss and an annular groove; the annular boss is inserted into the annular groove; the antenna oscillator is provided with a fastener avoiding through hole; the annular boss penetrates through the fastener avoiding through hole; the fastener is mounted within the annular boss.
5. The satellite-borne foldable yagi antenna element fixing device according to claim 1, wherein: the lower U-shaped antenna mounting seat is of an L-shaped structure; the upper U-shaped antenna mounting seat and the lower U-shaped antenna mounting seat are connected through screw clamping; the lower U-shaped antenna mounting seat is fixed on the connecting rod through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120303454.1U CN214477878U (en) | 2021-02-03 | 2021-02-03 | Satellite-borne foldable and unfoldable yagi antenna oscillator fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120303454.1U CN214477878U (en) | 2021-02-03 | 2021-02-03 | Satellite-borne foldable and unfoldable yagi antenna oscillator fixing device |
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| Publication Number | Publication Date |
|---|---|
| CN214477878U true CN214477878U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120303454.1U Active CN214477878U (en) | 2021-02-03 | 2021-02-03 | Satellite-borne foldable and unfoldable yagi antenna oscillator fixing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821032A (en) * | 2021-02-03 | 2021-05-18 | 深圳航天东方红卫星有限公司 | Satellite-borne foldable and unfoldable yagi antenna oscillator fixing device |
-
2021
- 2021-02-03 CN CN202120303454.1U patent/CN214477878U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821032A (en) * | 2021-02-03 | 2021-05-18 | 深圳航天东方红卫星有限公司 | Satellite-borne foldable and unfoldable yagi antenna oscillator fixing device |
| CN112821032B (en) * | 2021-02-03 | 2023-11-28 | 深圳航天东方红卫星有限公司 | Spaceborne foldable yagi antenna element fixing device |
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