CN110518327B - Annular foldable mechanism for human-shaped rod of film antenna - Google Patents
Annular foldable mechanism for human-shaped rod of film antenna Download PDFInfo
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- CN110518327B CN110518327B CN201910787715.9A CN201910787715A CN110518327B CN 110518327 B CN110518327 B CN 110518327B CN 201910787715 A CN201910787715 A CN 201910787715A CN 110518327 B CN110518327 B CN 110518327B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/288—Satellite antennas
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Abstract
The invention discloses a thin film antenna humanoid rod annular foldable mechanism, which is arranged into an annular polygon in an integral structure and comprises an upper layer and a lower layer, wherein each layer is provided with a plurality of synchronous driving mechanisms, each synchronous driving mechanism comprises a driving device, a gear transmission device, a roller transmission device, a radial pressing device and an auxiliary supporting device, the driving device is driven by the gear transmission device and is connected with the roller transmission device, the radial pressing device is arranged corresponding to the roller transmission device, and the auxiliary supporting device forms an integral supporting frame, so that the positions of the driving device, the gear transmission device, the roller transmission device and the radial pressing device are conveniently arranged; the adjacent synchronous driving mechanisms are connected through a human-shaped rod; the invention solves the problems of large impact and heavy mass in the unfolding process of the traditional unfolding mechanism consisting of the rigid hinge and the rigid rod, and can realize synchronous unfolding in the annular direction and the longitudinal direction.
Description
Technical Field
The invention relates to the technical field of space foldable mechanisms, in particular to an annular foldable mechanism for a human-shaped rod of a film antenna.
Background
The film antenna is an important component of a spacecraft and an important platform for directly executing the function of a satellite. In order to meet the requirement of satellite communication, the film antenna inevitably tends to be large and complex, but at the same time, the film antenna faces the limitation of the effective space and carrying capacity of the carrier. The most feasible way to solve this conflict is to use a better form of film antenna deployment mechanism.
The existing film antenna folding and unfolding mechanism is generally composed of a rigid hinge and a rigid rod, and the folding and unfolding mechanism has large impact and heavy mass in the unfolding process and is not suitable for unfolding a large film antenna.
In view of the above-mentioned drawbacks, the inventors of the present invention have finally obtained the present invention through a long period of research and practice.
Disclosure of Invention
In order to solve the technical defects, the invention adopts the technical scheme that an annular foldable mechanism of a human-shaped rod of a film antenna is provided, the overall structure is arranged into an annular polygon and comprises an upper layer and a lower layer, each layer is provided with a plurality of synchronous driving mechanisms, each synchronous driving mechanism comprises a driving device, a gear transmission device, a roller transmission device, a radial pressing device and an auxiliary supporting device, the driving device is driven by the gear transmission device and is connected with the roller transmission device, the radial pressing device is arranged corresponding to the roller transmission device, and the auxiliary supporting device forms an integral supporting frame, so that the positions of the driving device, the gear transmission device, the roller transmission device and the radial pressing device are conveniently arranged; and the adjacent synchronous driving mechanisms are connected through a human-shaped rod.
Preferably, the roller transmission device comprises a longitudinal transmission block and an annular transmission block, and the longitudinal transmission block and the annular transmission block are respectively provided with a corresponding radial pressing device and the auxiliary supporting device in a matching manner; the driving device is in transmission connection with the longitudinal transmission block and the annular transmission block through the gear transmission device.
Preferably, the gear transmission device comprises a first bevel gear, a second bevel gear, a first transmission shaft, a first straight gear, a second straight gear and a first main shaft; an output shaft of the driving device is connected with the first bevel gear; the first transmission shaft is fixedly connected with the second bevel gear; the first bevel gear is meshed with the second bevel gear; the first straight gear is connected with the first transmission shaft; the first main shaft on a first bottom plate on the auxiliary supporting device is connected with the second straight gear; the first straight gear is meshed with the second straight gear, and the first main shaft on the first base plate is connected with the annular transmission block.
Preferably, the gear transmission device further comprises a third bevel gear, a second transmission shaft, a third spur gear and a fourth spur gear; the second transmission shaft is fixedly connected with the third bevel gear; the second bevel gear is meshed with the third bevel gear; the third straight gear is connected with the second transmission shaft; the first main shaft on a second bottom plate on the auxiliary supporting device is connected with the fourth straight gear; the third straight gear is meshed with the fourth straight gear, and the first main shaft on the second base plate is connected with the longitudinal transmission block.
Preferably, the auxiliary supporting device comprises a first top plate, an upper top plate, a baffle plate and a supporting rod; the first top plate, the first bottom plate and the second bottom plate are fixedly connected together through the supporting rod, and the roller transmission device is arranged between the first top plate, the first bottom plate and the second bottom plate.
Preferably, the first top plate and the upper top plate are fixedly connected together; the baffle is fixedly connected with the first top plate and the first bottom plate; the motor fixing plate is fixedly connected with the first bottom plate and the second bottom plate.
Preferably, the first top plate, the first bottom plate, the second bottom plate, the baffle plate and the motor fixing plate are all provided with waist-shaped holes at the joints.
Preferably, the longitudinal transmission block and the annular transmission block respectively comprise a coupler, a first roller, an upper end cover, a bearing and a roller sheet pressing rod, and the first main shaft is connected with the coupler; the first roller is connected with the coupler and the upper end cover, and a bearing seat is arranged between the upper end cover and the first top plate; the bearing is in interference fit with the upper end cover and a bearing seat on the first top plate; the roller pressing sheet rod fixedly connects the humanoid rod to the first roller through a screw.
Preferably, the radial pressing device comprises a mandrel, a first extension spring, a second extension spring, a sliding block and a bottom plate fixing frame; screws are screwed into the upper top plate and the first top plate to serve as positioning columns of the first extension springs; the bottom plate fixing frame is fixedly connected to the first bottom plate through the nut and used as a positioning column of the second extension spring; the first extension spring and the second extension spring pull the mandrel, and the mandrel is fixedly connected with the sliding block; the two ends of the sliding block are arranged in the guide rail sliding grooves formed in the first top plate and the first bottom plate and can slide along the guide rail sliding grooves.
Preferably, the radial pressing device further comprises a pressing frame and a pressing roller, wherein two ends of the pressing frame are fixedly connected with the pressing roller and are in interference fit with the mandrel; the pressing roller presses the human-shaped rod wound on the first roller under the action of the pre-tightening force of the first extension spring and the second extension spring.
Compared with the prior art, the invention has the beneficial effects that: the invention solves the problems of large impact and heavy mass in the unfolding process of the traditional unfolding mechanism consisting of the rigid hinge and the rigid rod, and can realize synchronous unfolding in the annular direction and the longitudinal direction. The mechanism is annular in a decagon shape and comprises an upper layer and a lower layer, each layer is composed of ten synchronous driving mechanisms, each synchronous driving mechanism transmits the motion of a motor to two vertically crossed rollers through bevel gears, and the human-shaped rods in two mutually vertical planes are unfolded simultaneously in three directions. The radial pressing mechanism contained in the mechanism is used for realizing the flattening of the humanoid rod along the radial direction, the circumferential pressing mechanism realizes the compactness of the humanoid rod when the humanoid rod is folded and wound, and the supporting mechanism can improve the rigidity of the humanoid rod in the unfolding state. The invention has the advantages of large deployable area, stable unfolding and folding processes and small folded volume, and provides a high-efficiency and reliable technology for the unfolding of the film antenna structure.
Drawings
FIG. 1 is a perspective view of the human-shaped rod ring-shaped foldable mechanism of the film antenna;
FIG. 2 is a perspective view of the synchronous drive mechanism;
FIG. 3 is a structural view of the gear assembly;
FIG. 4 is a structural view of the drum driving unit;
FIG. 5 is a cross-sectional view of the chevron rod;
fig. 6 is a development process diagram of the human-shaped rod ring-shaped foldable mechanism of the film antenna.
The figures in the drawings represent:
101-a drive motor; 102-a reducer; 201-a first bevel gear; 202-second bevel gear; 203-third bevel gear; 204-first flat bond; 205-a first drive shaft; 206-a second drive shaft; 207-a first sleeve; 208-a second bushing; 209-second flat bond; 210-a first straight gear; 211-a second spur gear; 212 — a first spindle; 213-third flat bond; 214-a third spur gear; 215-a fourth spur gear; 301-a coupling; 302-a first drum; 304-upper end cap; 305-roller presser bar; 308-a human-shaped rod; 401-a mandrel; 402-a hold-down frame; 403-a compacting roller; 404-a first extension spring; 405-a second extension spring; 406-a slider; 407-guiding a pressing rod; 408-a bottom plate fixing frame; 501-a first top plate; 502-a top plate; 503-upper top plate; 504-a first backplane; 505-a second backplane; 506-a baffle plate; 507-support rods; 508-upper deck fixing bolts; 509-motor fixing plate.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Example one
As shown in fig. 1, fig. 1 is a schematic structural diagram of the thin film antenna human-shaped rod annular foldable mechanism; in this embodiment, the whole mechanism of the human-shaped rod annular foldable and expandable mechanism of the film antenna is annularly arranged to be decagonal, and comprises an upper layer and a lower layer, wherein each layer is provided with ten synchronous driving mechanisms.
As shown in fig. 2, fig. 2 is a perspective view of the synchronous drive mechanism; each synchronous driving mechanism comprises a driving device, a gear transmission device, a roller transmission device, a radial pressing device and an auxiliary supporting device, wherein the driving device is used for driving through the gear transmission device and is connected with the roller transmission device, the radial pressing device is arranged corresponding to the roller transmission device, and the auxiliary supporting device forms an integral supporting framework, so that the positions of the driving device, the gear transmission device, the roller transmission device and the radial pressing device are conveniently arranged. Adjacent said synchronized drive mechanisms are connected by a chevron-shaped rod 308.
As shown in fig. 3, fig. 3 is a structural view of the gear assembly; the driving device comprises a driving motor 101 and a speed reducer 102; the gear transmission device 2 comprises a first bevel gear 201, a second bevel gear 202, a third bevel gear 203, a first transmission shaft 205, a second transmission shaft 206, a first straight gear 210, a second straight gear 211, a first main shaft 212, a third straight gear 214 and a fourth straight gear 215.
The roller transmission device comprises a longitudinal transmission block and an annular transmission block, and the longitudinal transmission block and the annular transmission block are respectively provided with a corresponding radial pressing device and an auxiliary supporting device in a matching way; the driving device realizes the movement of the annular transmission block through the transmission of the first bevel gear 201 and the second bevel gear 202; the driving device 1 realizes the movement of the longitudinal transmission block through the transmission of the first bevel gear 201, the second bevel gear 202 and the third bevel gear 203.
Specifically, the output shaft of the driving motor 101 is connected to the speed reducer 102, the speed reducer 102 is mounted on a motor fixing plate 509 of the auxiliary supporting device, and the output shaft of the speed reducer 102 passes through a through hole on the motor fixing plate 509 and is connected to the first bevel gear 201 through a first flat key 204; the bearings are arranged in the bearing seats of the first bottom plate 504 and the second bottom plate 505 on the auxiliary supporting device in an interference manner.
After the first transmission shaft 205 is in interference fit with the bearing, a first shaft sleeve 207 is installed, and then the first transmission shaft is fixedly connected with the second bevel gear 202 through a set screw; the first bevel gear 201 is meshed with the second bevel gear 202.
After the second transmission shaft 206 is in interference fit with the bearing, a second shaft sleeve 208 is installed, and then the second shaft sleeve is fixedly connected with the third bevel gear 203 through a set screw; the second bevel gear 202 meshes with the third bevel gear 203.
The first straight gear 210 is connected with the first transmission shaft 205 through a second flat key 209; the bearing is in interference fit with a bearing seat of the first base plate 504, and then is in interference fit with the first main shaft 212 on the first base plate 504; the first main shaft 212 on the first base plate 504 is connected with the second spur gear 211 through a third flat key 213; the first spur gear 210 is engaged with the second spur gear 211, and the first main shaft 212 on the first base plate 504 is connected with the endless transmission block.
The third spur gear 214 is connected with the second transmission shaft 206 through a second flat key 209; the bearing is in interference fit with a bearing seat of the second bottom plate 505 and then is in interference fit with the first main shaft 212 on the second bottom plate 505; the first main shaft 212 on the second bottom plate 505 is connected with the fourth spur gear 215 through a third flat key 213; the third spur gear 214 is engaged with the fourth spur gear 215, and the first main shaft 212 on the second base plate 505 is connected with the longitudinal transmission block.
Through the structural arrangement of the gear transmission device, the output shaft of the speed reducer 102 transmits motion and power to the second bevel gear 202 and the third bevel gear 203 which have mutually perpendicular axes through the first bevel gear 201, so that two mutually perpendicular first main shafts 212 are driven.
Example two
As shown in fig. 4, fig. 4 is a structural view of the drum driving unit; the auxiliary supporting device comprises a first top plate 501, an upper top plate 503, a first bottom plate 504, a second bottom plate 505, a baffle 506 and a supporting rod 507.
The first top plate 501 and the first bottom plate 504 are fixedly connected together through twelve supporting rods 507 and twenty-four nuts, so that the connection reliability is enhanced and the mechanism weight is reduced; the roller transmission 3 is disposed between the first top plate 501 and the first bottom plate 504.
FIG. 5 is a cross-sectional view of the chevron rod, as shown in FIG. 5; the first top plate 501 and the upper top plate 503 are fixedly connected together through two upper top plate fixing bolts 508 and four third nuts 509; the baffle 506, the first top plate 501 and the first bottom plate 504 are fixedly connected together by bolts and nuts, and play a role in guiding and positioning the unfolded herringbone rod 308; the motor fixing plate 509 is fixedly connected to the first base plate 504 and the second base plate 505 by bolts and nuts.
Preferably, the first top plate 501, the top plate 502, the first bottom plate 504, the second bottom plate 505, the baffle 506, and the motor fixing plate 509 are all provided with kidney-shaped holes at the joints, so as to reduce the assembly stress caused by bolt connection due to manufacturing errors.
The longitudinal transmission block and the annular transmission block respectively comprise a coupler 301, a first roller 302, an upper end cover 304, a bearing and a roller pressing rod 305.
The first main shaft 212 is connected with the coupler 301 through a spline; the first roller 302 is connected with the coupler 301 and the upper end cover 304 through M5 bolts, and a bearing seat is arranged between the upper end cover 304 and the first top plate 501; the bearing is in interference fit with the upper end cover 304 and a bearing seat on the first top plate 501; the roller presser bar 305 secures the chevron rod 308 to the first roller 302 by four screws.
The radial pressing device comprises a mandrel 401, a pressing frame 402, a pressing roller 403, a first extension spring 404, a second extension spring 405, a sliding block 406, four guide pressing rods 407 and a bottom plate fixing frame 408.
Eight bearing seats are arranged on the first top plate 501 and the first bottom plate 504, and eight bearings are in interference fit with the four guide compression rods 407, the first top plate 501 and the bearing seats on the first bottom plate 504 respectively.
Screws are screwed into the upper top plate 503 and the first top plate 501 to serve as positioning columns of the first extension spring 404; the bottom plate fixing frame 408 is fixedly connected to the first bottom plate 504 through the nut and serves as a positioning column for the second extension spring 405; the first extension spring 404 and the second extension spring 405 pull the mandrel 401, and the mandrel 401 is fixedly connected with the sliding block 406 by a screw pair; both ends of the sliding block 406 are disposed in and slidable along guide grooves formed in the first top plate 501 and the first bottom plate 504.
Two ends of the pressing frame 402 are fixedly connected with the pressing roller 403 and are in interference fit with the mandrel 401; the pressing roller 403 tightly presses the human-shaped bar 308 wound on the first roller 302 under the biasing force of the first tension spring 404 and the second tension spring 405.
Generally, the first roller 302 on the endless transmission block is connected with two human-shaped rods 308, and the first roller 302 can realize the unfolding and folding of the two human-shaped rods 308 through forward and reverse rotation, the included angle between the human-shaped rods 308 is 144 °, and the unfolding mechanism is in a shape of a circular decagon. Two ends of the human-shaped rod 308 are respectively flattened and fixed on the first roller 302 of the adjacent synchronous driving mechanism.
The radial pressing devices are axially and symmetrically distributed about the first roller 302, the spindle 401 can move radially along the first roller 302 under the pre-tightening force of the first extension spring 404 and the second extension spring 405, and the sliding block 406 is connected with the spindle 401 through a thread pair and can slide in a guide rail arranged on the upper top plate 503 and the first bottom plate 504 to perform radial movement guiding and reduce friction.
As shown in fig. 6, fig. 6 is a diagram of an unfolding process of the human-shaped rod ring-shaped foldable mechanism of the film antenna; the working process of the human-shaped rod annular foldable mechanism of the film antenna specifically comprises the following steps: the driving motor 101 transmits motion to the bevel gear set through the speed reducer 102, and the bevel gears perpendicular to each other transmit motion and power to the two first spindles 212 of the longitudinal transmission block and the annular transmission block through gear sets with different reduction ratios, so that the rotating speed of the first spindles of the annular transmission block is far greater than that of the first spindles of the longitudinal transmission block.
The coupler 301 under the first roller 302 is connected with the first main shaft 212 through a spline, and has the same speed as the first main shaft 212. The synchronous driving mechanism mainly adopts annular expansion and assists in longitudinal expansion. Two ends of the human-shaped rod 308 are respectively and fixedly connected to the first rollers 302 of the two synchronous driving mechanisms through the radial pressing devices in a pressing mode, and the human-shaped rod can be unfolded bidirectionally when being unfolded, so that the integral rigidity of the mechanism is enhanced, and the unfolding time is shortened.
The radial pressing device presses the pressing roller 403 tightly against the herringbone rod 308 wound on the first roller 302 by the pre-tension force of two pairs of four extension springs. When the film antenna is unfolded and folded, the radial pressing device 4 slides on the top plate and the bottom plate guide rails in the radial direction through the sliding block 406.
When the human-shaped rod 308 is arranged, the human-shaped rod passes through the gap between the guide pressing rods 407 and the human-shaped rod groove on the baffle 506 in sequence, when the film antenna is unfolded and folded, the guide pressing rods 407 play a role in guiding and flattening the human-shaped rod 308, and the human-shaped rod groove is arranged on the baffle 506 and plays a role in guiding and restraining the human-shaped rod 308.
The guide pressing rods 407 and the baffle plates 506 arranged between the first bottom plate 504 and the first top plate 501 are distributed in a mirror image manner relative to the first roller 302, and the included angle in the horizontal plane is 144 °, so that the included angle between two human-shaped rods 308 which are annularly expanded by one synchronous driving mechanism is also 144 °. The integral mechanism forms a regular decagon in the annular plane after being unfolded. In the longitudinal direction, the four adjacent synchronous driving mechanisms adopt a rope to pre-tighten the unfolding state.
In the embodiment of the invention, the annular shape is decagon, and the decagon comprises an upper layer and a lower layer, each layer is composed of ten synchronous driving mechanisms, each synchronous driving mechanism transmits the motion of a motor to two vertically crossed rollers through a bevel gear, and the human-shaped rods in two mutually vertical planes are unfolded towards three directions simultaneously. The radial pressing mechanism contained in the mechanism is used for realizing the flattening of the humanoid rod along the radial direction, the circumferential pressing mechanism realizes the compactness of the humanoid rod when the humanoid rod is folded and wound, and the supporting mechanism can improve the rigidity of the humanoid rod in the unfolding state. The invention has the advantages of large deployable area, stable unfolding and folding processes and small folded volume, and provides a high-efficiency and reliable technology for the unfolding of the film antenna structure.
The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A thin film antenna humanoid pole annular foldable mechanism is characterized in that the overall structure is set to be an annular polygon and comprises an upper layer and a lower layer, each layer is provided with a plurality of synchronous driving mechanisms, each synchronous driving mechanism comprises a driving device, a gear transmission device, a roller transmission device, a radial pressing device and an auxiliary supporting device, the driving device is driven by the gear transmission device and connected with the roller transmission device, the radial pressing device is arranged corresponding to the roller transmission device, and the auxiliary supporting device forms an integral supporting frame so as to facilitate the position arrangement of the driving device, the gear transmission device, the roller transmission device and the radial pressing device; the adjacent synchronous driving mechanisms are connected through a human-shaped rod;
the roller transmission device comprises a longitudinal transmission block and an annular transmission block, and the longitudinal transmission block and the annular transmission block are respectively provided with a corresponding radial pressing device and an auxiliary supporting device in a matching way; the driving device is in transmission connection with the longitudinal transmission block and the annular transmission block through the gear transmission device;
the longitudinal transmission block and the annular transmission block both comprise first rollers, the first rollers of the longitudinal transmission block and the annular transmission block are vertically arranged, and two ends of the herringbone rod are respectively fixed on the first rollers of the adjacent synchronous driving mechanisms.
2. The film antenna humanoid pole annular foldable mechanism of claim 1, wherein the gear transmission device comprises a first bevel gear, a second bevel gear, a first transmission shaft, a first straight gear, a second straight gear, a first main shaft; an output shaft of the driving device is connected with the first bevel gear; the first transmission shaft is fixedly connected with the second bevel gear; the first bevel gear is meshed with the second bevel gear; the first straight gear is connected with the first transmission shaft; the auxiliary supporting device comprises a first bottom plate and a second bottom plate, the first main shaft is arranged on both the first bottom plate and the second bottom plate, and the first main shaft on the first bottom plate is connected with the second straight gear; the first straight gear is meshed with the second straight gear, and a first main shaft on the first base plate is connected with the annular transmission block.
3. The film antenna humanoid rod annular foldable mechanism of claim 2, characterized in that the gear transmission device further comprises a third bevel gear, a second transmission shaft, a third spur gear, a fourth spur gear; the second transmission shaft is fixedly connected with the third bevel gear; the second bevel gear is meshed with the third bevel gear; the third straight gear is connected with the second transmission shaft; the first main shaft on the second bottom plate is connected with the fourth straight gear; the third straight gear is meshed with the fourth straight gear, and a first main shaft on the second base plate is connected with the longitudinal transmission block.
4. The film antenna humanoid pole annular foldable mechanism of claim 3, characterized in that the auxiliary supporting device comprises a first top plate, an upper top plate, a baffle plate, a supporting pole; the first top plate and the first bottom plate are fixedly connected together through the supporting rod, and the roller transmission device is arranged between the first top plate and the first bottom plate.
5. The film antenna human-shaped rod annular foldable mechanism of claim 4, wherein the first top plate and the upper top plate are fixedly connected together; the baffle is fixedly connected with the first top plate and the first bottom plate; the motor fixing plate is fixedly connected with the first bottom plate and the second bottom plate.
6. The thin film antenna humanoid pole annular foldable mechanism of claim 5, characterized in that the first top plate, the first bottom plate, the second bottom plate, the baffle plate and the motor fixing plate are all provided with waist-shaped holes at the joints.
7. The film antenna herringbone rod annular foldable mechanism of claim 6, wherein the longitudinal transmission block and the annular transmission block each comprise a coupler, an upper end cover, a bearing and a roller pressing sheet rod, and the first main shaft is connected with the coupler; the first roller is connected with the coupler and the upper end cover, and a bearing seat is arranged between the upper end cover and the first top plate; the bearing is in interference fit with the upper end cover and a bearing seat on the first top plate; the roller pressing sheet rod fixedly connects the humanoid rod to the first roller through a screw.
8. The film antenna humanoid pole annular foldable mechanism of claim 7, characterized in that the radial pressing device comprises a mandrel, a first extension spring, a second extension spring, a sliding block and a bottom plate fixing frame; screws are screwed into the upper top plate and the first top plate to serve as positioning columns of the first extension springs; the bottom plate fixing frame is fixedly connected to the first bottom plate through a nut and serves as a positioning column of the second extension spring; the first extension spring and the second extension spring pull the mandrel, and the mandrel is fixedly connected with the sliding block; the two ends of the sliding block are arranged in the guide rail sliding grooves formed in the first top plate and the first bottom plate and can slide along the guide rail sliding grooves.
9. The film antenna humanoid pole annular foldable mechanism of claim 8, wherein the radial pressing device further comprises a pressing frame and a pressing roller, two ends of the pressing frame are fixedly connected with the pressing roller and are in interference fit with the mandrel; the pressing roller presses the human-shaped rod wound on the first roller under the action of the pre-tightening force of the first extension spring and the second extension spring.
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| CN201910787715.9A CN110518327B (en) | 2019-08-23 | 2019-08-23 | Annular foldable mechanism for human-shaped rod of film antenna |
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| CN201910787715.9A CN110518327B (en) | 2019-08-23 | 2019-08-23 | Annular foldable mechanism for human-shaped rod of film antenna |
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| CN110518327B true CN110518327B (en) | 2020-10-20 |
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| CN111313138B (en) * | 2019-12-17 | 2022-07-01 | 哈尔滨工业大学 | Elastic deployable spiral antenna mechanism |
| CN113088083B (en) * | 2021-03-22 | 2021-12-21 | 东华大学 | Deployable flexible mechanism based on optical drive and preparation method thereof |
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