Deployable antenna with bud-structured fixed surface
By adopting a "bud" structure in the solid-side antenna, the adjustment ring is used to drive the panel deflection to achieve the antenna's closing and unfolding, solving the problem of space occupation and portability of the solid-side antenna, and achieving a miniaturization and efficient expansion and retraction process.
Patent Information
- Application Number
- CN202510074255.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-04-29
AI Technical Summary
The existing solid-surface antenna has a large size, which limits its application in space-constrained scenarios, and has poor portability and inconvenient storage, which affects its application in actual needs.
The "flower bud" structure is adopted, and the adjustment ring on the center body is connected one by one to the antenna panel. The rotation of the adjustment ring drives the panel up and down to achieve the closing and unfolding of the antenna.
The forward miniaturization of the antenna is achieved, the overall size and storage volume are reduced, the portability and transportation convenience are improved, and the risk of failure caused by complex structure is reduced.
Smart Images
Figure CN119905828A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of solid-surface deployable antennas, and in particular to a solid-surface deployable antenna with a "bud" structure. Background Art
[0002] In the field of modern communications, the deployable structures of reflector antennas are diverse, including truss type, radial rib type, inflatable type, and plate type. Among them, the plate structure is often used to construct fixed surface antennas in the high frequency band of the radio spectrum, especially in the microwave band. Solid surface antennas have significant advantages in high gain and strong directivity due to their own structural characteristics. However, this type of antenna has obvious limitations. Its size is generally large, which directly limits its application in space-constrained scenarios, resulting in its inability to play a role in some environments with strict space requirements. At the same time, the large size also has an adverse effect on its portability, causing many inconveniences both in transportation and installation. Moreover, the size problem may also limit its power capacity and affect the overall performance of the antenna. In addition, existing solid surface antennas still have problems in many key aspects, such as unsatisfactory storage ratio, high risk of failure of the unfolded structure, and bulky overall structure. These problems seriously restrict the practical application of solid surface antennas, making it difficult to meet the current diversified actual needs. Summary of the invention
[0003] The purpose of the present invention is to provide a solid-surface deployable antenna with a "flower bud"-like storage reflective surface, which can achieve forward miniaturization, reduce the overall size, and have a smaller storage volume, thereby solving the problem of space occupation of existing solid-surface antennas.
[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a "bud" structure solid surface deployable antenna, comprising a central body, on which a plurality of groups of antenna panels are evenly distributed along the circumferential direction, each group of antenna panels comprises a plurality of fan-shaped structure panels with curved surfaces, each panel can deflect up and down relative to the central body, the central body is provided with adjustment rings of the same number as the number of panels included in each group of antenna panels, each panel in each group of antenna panels is connected to the adjustment ring in a one-to-one correspondence, and each adjustment ring can rotate around the central body; When the antenna is folded, each panel in each group of antenna panels can be deflected upward under the rotation of the corresponding adjustment ring, so that each panel in each group of antenna panels is distributed in order from the inside to the outside, and panels of the same position are adjacent to each other, thereby forming a multi-layered encircling structure; When the antenna is deployed, each panel in each group of antenna panels can be deflected downward under the drive of the corresponding adjustment ring's reverse rotation, so that each panel in each group of antenna panels is distributed in sequence along the circumferential direction and spliced around the central body to form a curved antenna structure.
[0005] Furthermore, two constraint rings spaced apart from each other are fixedly connected to the central body, and the innermost panel in each group of antenna panels when the antenna is folded is connected to the upper constraint ring, and the other panels are connected to the lower constraint ring.
[0006] Furthermore, a rotatable ring sleeve is sleeved on the restraining ring at the upper end, and a corresponding panel is mounted on the ring sleeve.
[0007] Furthermore, in each group of antenna panels, the innermost panel in the antenna folded state is connected to the corresponding adjustment ring through a primary linkage rod, and both ends of the primary linkage rod are movably connected to the corresponding panel and the adjustment ring through a ball pair structure (such as a ball joint), and the other panels are connected to the corresponding adjustment ring through a secondary linkage rod, and one end of the secondary linkage rod is movably connected to the corresponding adjustment ring through a ball pair structure (such as a ball joint), and the other end is movably connected to the corresponding panel and the constraint ring at the lower end through a cell-changing mechanism.
[0008] Furthermore, the metamorphosis mechanism includes a fixed rod, a first movable rod, a second movable rod and a third movable rod. The fixed rod is vertically installed on the back of the corresponding panel and its upper and lower ends are respectively movably connected to the ends of the first movable rod and the third movable rod. The other ends of the first movable rod and the third movable rod are respectively movably connected to the upper and lower ends of the second movable rod. A connecting seat is provided on the constraint ring at the lower end. The other end of the third movable rod and the lower end of the second movable rod are coaxially installed on the connecting seat. The secondary linkage rod corresponding to the metamorphosis mechanism is connected to the first movable rod in the metamorphosis mechanism.
[0009] Furthermore, a first elastic return member (such as a tension spring) is provided between the first movable rod and the third movable rod, which can force them to move closer to each other after they move away from each other, and a second elastic return member (such as a torsion spring) is provided on the constraint ring at the lower end or the connecting seat provided thereon, which can force the second movable rod to deflect downward after it deflects upward relative to the constraint ring or the connecting seat.
[0010] Furthermore, the second movable rod is provided with a folding limit portion for limiting excessive folding between the second movable rod and the first movable rod, and the connecting seat is provided with an unfolding limit portion for limiting excessive downward rotation of the second movable rod.
[0011] Further, the cell-changing mechanism is configured such that when the first movable rod is supported by the folding limit portion and the second movable rod is not supported by the unfolding limit portion, the fixed rod, the first movable rod, the second movable rod, the third movable rod and the first elastic reset member contained therein can form an integral structure that can rotate synchronously relative to the restraining ring or the connecting seat at the lower end; and when the first movable rod is not supported by the folding limit portion and the second movable rod is supported by the unfolding limit portion, the fixed rod, the first movable rod, the second movable rod, the third movable rod and the first elastic reset member contained therein can form a double-rocker four-bar mechanism with the first movable rod as the main rod and the second movable rod as the frame.
[0012] Furthermore, the elastic force of the first elastic return member is smaller than the elastic force of the second elastic return member.
[0013] Furthermore, projections of connection parts between each panel and the corresponding restraint ring on the radial plane of the central body are distributed at equal angles.
[0014] The "bud" structure solid surface deployable antenna of the present invention can achieve positive miniaturization, reduce the overall size, and reduce the storage volume. In the storage state, the panels in each group of antenna panels are arranged in order from the inside to the outside, and the occupied space is greatly reduced, which can effectively solve the problem of space occupation of existing solid surface antennas and can be widely used in scenarios with limited space, such as satellites, drones and other equipment.
[0015] Due to the reduction in overall size and storage volume, this antenna is easier to carry and transport than traditional fixed-surface antennas. It is no longer limited by the bulky size of traditional antennas. Whether in field operations, emergency communications or other scenarios that require mobile use of antennas, it can be more conveniently deployed and transferred, thereby improving the convenience of use.
[0016] In terms of structural design, the present invention uses the adjustment ring on the central body to connect with each panel in each group of antenna panels one by one, and drives the panel to deflect up and down by adjusting the rotation around the central body to achieve the folding and unfolding of the antenna. This design is simple and stable, and the movement mode of each component is clear and orderly, which effectively reduces the failure risk caused by complex structure and significantly improves the reliability of antenna deployment and folding.
[0017] It is worth mentioning that while achieving miniaturization and reducing the storage volume, the solid-surface antenna still retains the high gain and strong directivity characteristics inherent in solid-surface antennas, and can well meet application scenarios such as satellite communications and radar detection that have high requirements on antenna performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 Schematic diagram of the process of unfolding and folding the "bud" structure solid surface deployable antenna Figure 1 ; Figure 2 Schematic diagram of the process of unfolding and folding the "bud" structure solid surface deployable antenna Figure 2 ; Figure 3 This is the main view of the "bud" structure solid surface deployable antenna in the deployed state; Figure 4 for Figure 3 A magnified schematic diagram of the middle A area; Figure 5 for Figure 4 A magnified schematic diagram of the A-1 part; Figure 6 for Figure 4 A-2 is an enlarged schematic diagram of the middle part; Figure 7 This is the main view of the "bud" structure solid surface deployable antenna in the middle state; Figure 8 for Figure 7 A magnified schematic diagram of the B part; Fig. 9 This is the main view of the "bud" structure solid surface deployable antenna in the folded state; Fig.10 for Fig. 9 A magnified schematic diagram of the middle C area; Fig.11 It is a schematic diagram of the structure of installing the restraining ring and the adjusting ring on the center body; Fig.12 It is a schematic diagram of the structure of installing a truncated table on the center body; Fig.13 This is a three-dimensional image of the first-level panel.
[0019] In the figure: 1——Central body 2——Antenna panel 2a——First level panel 2b——Second level panel 2c——Level 3 panel 3——Adjustment ring 3a——First-level adjustment ring 3b——Second-level adjustment ring 3c——Three-stage adjustment ring 4a——Upper restraint ring 4b——Constraint ring at the lower end 5——Ring sleeve 6——First-stage linkage rod 7——Ball pair structure 8——Secondary linkage rod 8a——Secondary linkage rod 8b——three-stage linkage rod 9——metamorphosis mechanism 9a——Fixed rod 9b——First movable rod 9c——Second movable rod 9c1——Folding limit part 9d——third movable rod 9e——first elastic reset member 9f——Second elastic reset member 10——Connection seat 10a——Expansion limiter 11a——First level round table 11b——Second level round table 11c——Third level round table 12——Ball seat 13——Axle rod 14——Connector 15——Base. DETAILED DESCRIPTION
[0020] In order to facilitate those skilled in the art to more clearly understand the concept of the present invention, it is further described below in conjunction with the embodiments and drawings. In addition, the words such as connected and connected mentioned in the embodiments are not limited to direct connection, and can also be indirect connection.
[0021] This embodiment provides a fixed surface deployable antenna with a reflective surface similar to a "bud" to achieve forward miniaturization, reduce the overall size, and reduce the storage volume, thereby solving the problem of space occupation of existing fixed surface antennas. Specifically, Figure 1-13As shown, the "bud" structure solid surface deployable antenna includes a central body 1, which can be used as the central axis of the entire antenna. Multiple groups of antenna panels 2 are arranged on the upper end of the central body 1, such as six groups. This embodiment is described with six groups of antenna panels 2. The six groups of antenna panels 2 are evenly distributed on the outside of the central body 1 along the circumferential direction. Each group of antenna panels 2 includes multiple panels, such as three. This embodiment is described with each group containing three panels. For the convenience of distinction, these three panels are respectively referred to as the first-level panel 2a, the second-level panel 2b and the third-level panel 2c from the inside to the outside (in the folded state). The surfaces of these panels are arc-shaped and the shapes are all fan-shaped, so that the antenna unfolds in a hemispherical curved surface (arc surface) structure. Each panel can be deflected up and down relative to the central body 1 to adjust the unfolding and folding state of the antenna. A plurality of adjustment rings 3 are also arranged on the central body 1. These adjustment rings 3 are usually located below the panels. Their number is usually the same as the number of panels contained in each group of antenna panels 2. Taking each group containing three panels as an example, the number of adjustment rings 3 is also three, and they are usually distributed at intervals up and down. For the convenience of distinction, the three adjustment rings 3 distributed up and down are respectively called the primary adjustment ring 3a, the secondary adjustment ring 3b, and the tertiary adjustment ring 3c. Each panel in each group of antenna panels 2 is connected to the adjustment ring 3 in a one-to-one correspondence, that is, in each group of antenna panels 2, the primary panel 2a is connected to the primary adjustment ring 3a, the secondary panel 2b is connected to the secondary adjustment ring 3b, and the tertiary panel 2c is connected to the tertiary adjustment ring 3c. These adjustment rings 3 can rotate around the central body 1 to drive the corresponding panels to deflect up and down. The rotation axes of these adjustment rings 3 are collinear, that is, they rotate coaxially. For this purpose, see 11 and 12. In this embodiment, three coaxially rotatable inner and outer truncated cones are also provided in the middle of the central body 1. From the inside to the outside, they can be divided into a primary truncated cone 11a, a secondary truncated cone 11b, and a tertiary truncated cone 11c. The heights of these truncated cones gradually increase from the inside to the outside, and they can be driven by separate motors. The three adjustment rings 3 are installed on the three truncated cones in the order of distribution of the corresponding panels in the folded state, that is, the primary adjustment ring 3a, the secondary adjustment ring 3b, and the tertiary adjustment ring 3c are installed on the upper ends of the primary truncated cone 11a, the secondary truncated cone 11b, and the tertiary truncated cone 11c, respectively, so that the three adjustment rings 3 can be distributed at intervals up and down to avoid interference. Among them, the diameters of the three adjustment rings 3 gradually increase from top to bottom, so that the movement of the three adjustment rings 3 and the components connected thereto can be relatively independent and free from interference.
[0022] The working form of the fixed surface deployable antenna of this embodiment is roughly as follows (see Figure 1 , 2 ): When the antenna is folded, each panel in each group of antenna panels 2 can be deflected upward under the rotation of the corresponding adjustment ring 3, so that each panel in each group of antenna panels 2 is distributed in order from the inside to the outside, and panels of the same position are adjacent to each other, thereby forming a multi-layered encircling structure; When the antenna is deployed, each panel in each group of antenna panels 2 can be deflected downward under the rotation of the corresponding adjustment ring 3, so that each panel in each group of antenna panels 2 is distributed in sequence along the circumferential direction and spliced around the central body 1 to form a curved (arc) antenna structure.
[0023] When the antenna is folded and extended, and in the final folded state and extended state, each group of antenna panels 2 is distributed in sequence along the circumferential direction.
[0024] Since the folded shape of the antenna is similar to a flower bud, this embodiment refers to this antenna structure as a "flower bud" structure solid surface deployable antenna.
[0025] For the structure to realize the up and down deflection of each panel relative to the central body 1, a suitable structure can be selected according to the requirements. This embodiment provides a preferred method as follows: Fig.11 , 12 As shown, two constraint rings 4a and 4b are fixedly connected to the central body 1 at an interval of one above the other. The innermost panel (primary panel 2a) of each set of antenna panels 2 in the antenna folded state is connected to the constraint ring 4a at the upper end, and the other panels (secondary panel 2b and tertiary panel 2c) are connected to the constraint ring 4b at the lower end. The constraint ring 4a at the upper end can be installed on the outer side of the upper edge of the central body 1, that is, the constraint ring 4a at the upper end can be flush with the upper end surface of the central body 1.
[0026] In order to facilitate the rotation of the panel, in this embodiment, a rotatable ring sleeve 5 is sleeved on the upper constraint ring 4a, and the ring sleeve 5 can rotate around the ring portion of the constraint ring. The panel corresponding to the upper constraint ring 4a is installed on the ring sleeve 5, and the ring sleeve 5 can rotate on the constraint ring, so that the connected panel can rotate on the constraint ring. Under the concentric cooperation between the ring sleeve 5 and the ring portion of the constraint ring, the directional rotation stability of the panel can be guaranteed. The constraint ring 4b at the lower end is connected to the corresponding panel through a movable mechanism, so as to realize the up and down deflection of the panel. Among them, the ring sleeve 5 can be fixed on the narrow end (lower end) of the primary panel 2a, see Fig.13 .
[0027] For the connection structure between the panel and the adjustment ring 3, a suitable structure can be selected according to the requirements. This embodiment provides a preferred method as follows: Figure 3-10As shown, the innermost panel (primary panel 2a) in each group of antenna panels 2 in the antenna folded state is connected to the corresponding adjustment ring 3 (primary adjustment ring 3a) through the primary linkage rod 6, wherein the two ends (upper and lower ends) of the primary linkage rod 6 are movably connected to the corresponding panel (primary panel 2a) and the adjustment ring 3 (primary adjustment ring 3a) through a ball joint structure 7 (such as a ball joint), that is, the upper end of the primary linkage rod 6 is connected to the back of the primary panel 2a through the ball joint structure 7, the back of the panel can be provided with a ball seat 12, the ball joint structure 7 is installed on the ball seat 12, and the lower end of the primary linkage rod 6 is connected to the primary adjustment ring 3a through the ball joint structure 7. In this way, the primary linkage rod 6 can realize multi-angle rotation (also known as universal rotation) with the primary panel 2a and the primary adjustment ring 3a, avoiding affecting the up and down deflection movement of the panel on the constraint ring. The other panels are connected to the corresponding adjustment ring 3 through the secondary linkage rod 8 (including the secondary linkage rod 8a and the tertiary linkage rod 8b), and one end of the secondary linkage rod 8 is movably connected to the corresponding adjustment ring 3 through the ball joint structure 7 (such as a ball joint), and the other end is movably connected to the corresponding panel and the constraint ring 4b at the lower end through the cell-changing mechanism 9. Further, the secondary panel 2b is connected to the secondary adjustment ring 3b through the secondary linkage rod 8a, one end (lower end) of the secondary linkage rod 8a is connected to the secondary adjustment ring 3b through the ball joint structure 7, and the other end (upper end) of the secondary linkage rod 8a is movably connected to the secondary panel 2b and the constraint ring 4b at the lower end through the cell-changing mechanism 9. The tertiary panel 2c is connected to the tertiary adjustment ring 3c through the tertiary linkage rod 8b, one end (lower end) of the tertiary linkage rod 8b is connected to the tertiary adjustment ring 3c through the ball joint structure 7, and the other end (upper end) of the tertiary linkage rod 8b is movably connected to the tertiary panel 2c and the constraint ring 4b at the lower end through the cell-changing mechanism 9. Through the linkage rod, the ball pair structure 7 and the metamorphic mechanism 9, the panel can be driven to deflect up and down by rotating the adjustment ring, wherein the secondary panel 2b and the tertiary panel 2c are connected to the constraint ring 4b at the lower end through the metamorphic mechanism 9, so that the secondary panel 2b and the tertiary panel 2c can be supported by the constraint ring 4b at the lower end to deflect up and down, and the constraint rings at the upper and lower ends are coaxially arranged, so that the secondary panel 2b and the tertiary panel 2c can maintain equivalent movement with the primary panel 2a, that is, the narrow ends of the secondary panel 2b and the tertiary panel 2c can resist the constraint ring 4a at the upper end when the antenna is deployed, and are concentrically spliced with the narrow end of the primary panel 2a on the constraint ring 4a at the upper end (the center of the circle is the center of the central body 1) to form an annular structure surrounding the central body 1 (that is, surrounding the central body 1 for one circle), and at the same time, the side portions of these panels can abut against each other, thereby splicing to form a deployed antenna structure similar to a curved surface (arc surface) structure.
[0028] In addition, in order to further reduce the risk of interference between the three adjustment rings 3 and the parts connected thereto, a ball seat 12 extending outwards may be provided at the position where the linkage rod is connected to the three adjustment rings 3 (see Fig.11The specific extension direction and shape (such as a curved shape) of the ball seat 12 can be adjusted appropriately according to actual needs. This embodiment and its accompanying drawings only show a preferred structure. The ball seat 12 is mainly used to install the ball pair structure 7 (ball joint), and the ball seat 12 can also be set in the cell mechanism 9.
[0029] like Figure 4-6As shown in Figures 8 and 10, for the cell-changing mechanism 9, it mainly includes a fixed rod 9a and three movable rods, and the three movable rods are a first movable rod 9b, a second movable rod 9c and a third movable rod 9d. The fixed rod 9a is vertically mounted on the back of the corresponding panel, and the fixed rod 9a is fixedly connected to the panel, and is used to drive the panel to deflect up and down under the drive of the movable rod. The upper end of the fixed rod 9a is movably connected to the inner side end of the first movable rod 9b through a rotating shaft, and the lower end of the fixed rod 9a is movably connected to the inner side end of the third movable rod 9d through a rotating shaft, so that the first movable rod 9b and the third movable rod 9d can rotate around the corresponding rotating shaft relative to the fixed rod 9a. The outer end of the first movable rod 9b is movably connected to the upper end of the second movable rod 9c through a rotating shaft, and the outer end of the third movable rod 9d is movably connected to the lower end of the second movable rod 9c through a rotating shaft, so that relative rotation can occur between the three of them. A connecting seat 10 (such as a double-ear seat) is provided on the restraining ring 4b at the lower end, and the other end (outer end) of the third movable rod 9d and the lower end of the second movable rod 9c are coaxially mounted on the connecting seat 10 (such as between the two ears of the double-ear seat) through an axial rod 13, and the secondary linkage rod 8 corresponding to the cell-changing mechanism 9 is connected to the first movable rod 9b (for example, the upper end of the secondary linkage rod 8 is mounted on the middle of the first movable rod 9b through the ball pair structure 7 and the ball seat 12). According to the requirements, these movable rods and the fixed rod 9a can be strip-shaped plates, and their configuration can be that the fixed rod 9a is a single rod, the first movable rod 9b and the third movable rod 9d are both double rods, the second movable rod 9c is a single rod, and the two first movable rods 9b and the two third movable rods 9d are symmetrically mounted on both sides of the single fixed rod 9a and the single second movable rod 9c. In addition, the shape and orientation of the two connecting seats 10 installed on the constraint ring 4b at the lower end for connecting the secondary panel 2b and the tertiary panel 2c can be adjusted according to actual needs. This embodiment provides a preferred method. For example, the connecting seat 10 for connecting the secondary panel 2b is a long double-ear seat, and it is located on the outside of the constraint ring and deflected upward at a certain angle relative to the horizontal plane (the radial plane of the center body 1), so that the position of the secondary linkage rod 8a can be as far away from the constraint ring as possible; the connecting seat 10 for connecting the tertiary panel 2c is a double-ear seat with an arched inner end and a long outer end, and it is located on the outside of the constraint ring and deflected upward at a certain angle relative to the horizontal plane (the radial plane of the center body 1), so that the position of the tertiary linkage rod 8b can be as far away from the constraint ring as possible, and the arched part can form an avoidance space for the primary linkage rod 6 connected to the primary panel 2a in the adjacent group, so as to avoid interference with the primary linkage rod 6 when the antenna is deployed.
[0030] When in use, by rotating the three adjustment rings 3, the corresponding linkage rods are driven to push the first, second and third level panels to rotate around the corresponding constraint rings, thereby achieving the effect of folding and unfolding the antenna.
[0031] In this embodiment, if Figure 5 ,6 As shown in , 8 and 10, a first elastic reset member 9e, such as a tension spring, is provided between the first movable rod 9b and the third movable rod 9d, which can cause them to move closer to each other after they move away from each other. A second elastic reset member 9f, such as a torsion spring, is provided on the lower end constraint ring 4b or the connecting seat 10 provided thereon, which can cause the second movable rod 9c to deflect downward after it deflects upward relative to the constraint ring or the connecting seat 10. Specifically, one end (upper end) of the tension spring is fixed to the matching point of the fixed rod 9a and the first movable rod 9b, and the other end (lower end) is fixed to the matching point of the second movable rod 9c, the lower end constraint ring 4b (connecting seat 10), and the third movable rod 9d; the torsion spring is installed at the matching point of the second movable rod 9c, the lower end constraint ring 4b (connecting seat 10), and the third movable rod 9d and acts on the second movable rod 9c; the elastic force of the torsion spring is greater than the elastic force of the tension spring. In addition, the torsion spring can be installed on the shaft rod 13 on the connecting seat 10, and one end of the torsion spring is fixed on the restraining ring 4b at the lower end, and the other end is fixed on the second movable rod 9c (such as abutting against the inner side of the second movable rod 9c). Among them, the tension spring can cause the first movable rod 9b and the third movable rod 9d to move closer to each other after they move away from each other, and the torsion spring can cause the second movable rod 9c to deflect downward after it deflects upward, thereby assisting the retraction and extension of the antenna. During the retraction and extension process of the antenna, the morphological changes of these elastic reset parts can promote the retraction and extension of the cell mechanism 9 (i.e., the retraction and extension between the fixed rod 9a and the movable rods), making the retraction and extension process of the antenna more convenient and efficient. Moreover, the setting of the elastic reset part can also buffer the external impact force to a certain extent, and reduce the damage to the antenna structure caused by unexpected situations such as vibration and collision.
[0032] In this embodiment, if Figure 5 , 6 As shown in FIGS. 8 and 10, a folding limiter 9c1 (such as a folding stopper) is provided on the second movable rod 9c, which is used to limit the excessive folding between the second movable rod 9c and the first movable rod 9b. At the same time, an unfolding limiter 10a (such as an unfolding stopper) is also provided on the connecting seat 10, which is mainly used to limit the excessive downward rotation of the second movable rod 9c. In this way, it can be ensured that the cell-changing mechanism 9 can have two different postures and switch them to promote the folding and unfolding of the antenna.
[0033] The projections of the connection parts between each panel and the corresponding restraining ring on the radial plane of the central body 1 are distributed at equal angles. Taking the six groups of antenna panels 2 of this embodiment, each group includes three panels as an example, the angle between the projections of these connection parts is 20 degrees. This can ensure the uniformity and symmetry of the antenna structure in the circumferential direction, which helps to improve the performance and stability of the antenna.
[0034] The "bud" structure solid surface deployable antenna of this embodiment is a solid surface deployable antenna that combines a metamorphic mechanism and a plate type, and its working process is roughly as follows: It should be noted that the metamorphosis mechanism 9 has two different postures during the movement process, and the two postures are briefly described below: Posture 1 (see Fig.10 ): In this posture, the folding blocks on the first movable rod 9b and the second movable rod 9c are in contact with each other, while the second movable rod 9c is not in contact with the unfolding block. At this time, the fixed rod 9a, the first movable rod 9b, the second movable rod 9c, the third movable rod 9d and the tension spring together form a relatively fixed integral structure. This integral structure can only rotate around the shaft 13 on the connecting seat 10 to achieve a specific movement function.
[0035] Posture 2 (see Figure 4-6 ): When the first movable rod 9b and the folding block on the second movable rod 9c are no longer in contact, and the second movable rod 9c is in contact with the unfolding block, the metamorphosis mechanism 9 enters the second posture. In this posture, the fixed rod 9a, the first movable rod 9b, the second movable rod 9c, the third movable rod 9d and the tension spring form a double rocker four-bar mechanism. In this mechanism, the first movable rod 9b plays the main driving role as the main rod, and the second movable rod 9c acts as a frame to provide support and constraint for the movement of the entire mechanism, thereby realizing a movement mode different from the first posture.
[0036] From folding to unfolding: When the antenna changes from a folded state to an unfolded state, its initial state is that the first, second and third level panels are tightly and vertically attached together. At this time, the first, second and third level linkage rods also tend to a vertical state, and the cell transformation mechanism 9 is in posture one.
[0037] In order to realize the smooth deployment of the antenna, the adjustment ring 3 needs to be controlled accordingly by the motor. In this embodiment, three stepping motors are used to control the first, second and third level adjustment rings respectively, so as to avoid interference problems that may occur during the deployment process. Specifically, the first, second and third level adjustment rings are connected to the corresponding first, second and third level motors respectively. In order to ensure that each panel is deployed in sequence and coordinated, the rotation angle of the adjustment ring 3 controlled by the third level motor is smaller than that of the second level motor, and the angle controlled by the second level motor is smaller than that of the first level motor. In actual operation, the three motors start working at the same time, and according to the preset angle control strategy, the corresponding adjustment ring 3 is driven to rotate, thereby driving the first, second and third level panels to be gradually deployed.
[0038] When the three-stage motor starts to rotate, it will drive the three-stage adjustment ring 3c connected to it to rotate together. The rotation of the three-stage adjustment ring 3c then causes the three-stage linkage rod 8b to produce a tilting movement. With the movement of the three-stage linkage rod 8b, the first movable rod 9b in the metamorphic mechanism 9 is also driven. At this time, since the elastic force of the torsion spring is greater than the elastic force of the tension spring, the metamorphic mechanism 9 is in posture one. In this posture, the metamorphic mechanism 9 starts from the retracted state, rotates around the constraint ring 4b at the lower end, and gradually changes to the expanded state until the second movable rod 9c in the metamorphic mechanism 9 fits with the expansion block.
[0039] Once the second movable rod 9c in the cell-changing mechanism 9 is in contact with the unfolding block, the cell-changing mechanism 9 switches to posture 2. In posture 2, the first movable rod 9b overcomes the pulling force of the tension spring and lifts the third-level panel 2c (with its narrow end as a reference) upward from the height of the constraint ring 4b at the lower end until it reaches the same height as the constraint ring 4a at the upper end. In this process, the movement of the secondary panel 2b is consistent with that of the tertiary panel 2c, but it is slightly slower in the unfolding time. At the same time, the primary panel 2a gradually tends to the unfolding state through the tilting movement of the primary linkage rod 6. When the primary panel 2a, the secondary panel 2b and the tertiary panel 2c have completed the corresponding unfolding actions, the solid surface antenna has been fully unfolded. At this time, the motor stops working and the antenna enters a state that can be used normally.
[0040] Expand to collapse (see Figure 1 , 2 ): When the antenna is converted from the unfolded state to the folded state, the three motors simultaneously perform a reverse operation, which causes the corresponding three adjustment rings 3 to also reverse. Specifically, the primary adjustment ring 3a rotates along the primary truncated cone 11a, and in the process drives the primary linkage rod 6 to move, thereby realizing the folding action of the primary panel 2a.
[0041] At the same time, the secondary adjustment ring 3b rotates along the secondary truncated cone 11b, driving the secondary linkage rod 8a to move in the vertical direction. Since the elastic force of the torsion spring is greater than the elastic force of the tension spring at this time, the metamorphosis mechanism 9 is in the second posture under the action of the tension spring. In this posture, the secondary panel 2b (with its narrow end as a reference) gradually descends from the height position of the upper constraint ring 4a until it reaches the height position of the lower constraint ring 4a. This process will continue until the first movable rod 9b in the metamorphosis mechanism 9 fits with the folding stopper.
[0042] Once the first movable rod 9b in the metamorphic mechanism 9 is in contact with the folding block on the second movable rod 9c, the metamorphic mechanism 9 switches to posture 1. In posture 1, the metamorphic mechanism 9 rotates around the shaft 13 on the connecting seat 10, driving the secondary panel 2b to further fold until it is in contact with the primary panel 2a. The folding action of the tertiary panel 2c is slightly slower than that of the secondary panel 2b, and finally folds with the secondary panel 2b. When the primary panel 2a, the secondary panel 2b and the tertiary panel 2c are all in contact, the solid surface antenna successfully achieves the folded state.
[0043] When the antenna is folded, each panel in each group of antenna panels 2 will deflect upward under the rotation drive of the corresponding adjustment ring 3. Among them, the first, second and third level panels are distributed in order from the inside to the outside, and finally form a three-layer structure. In this process, panels of the same position will be adjacent to each other, that is, the panels in each layer of the structure are close to and connected to each other, and they can be in a state of abutment or there can be a certain interval between them. These panels are nested layer by layer to construct a multi-layer embracing structure similar to a flower bud. It is worth noting that in actual applications, the position relationship between each layer (that is, between the first, second and third level panels) can be selected according to specific needs, and they can be in contact with each other and fit tightly, or they can be distributed at intervals without contact. In this embodiment, after comprehensive consideration, the preferred method of fitting together is selected. This choice makes the layout of each part of the antenna more compact and reasonable when it is folded, effectively reducing the space occupation, and is also conducive to ensuring the stability of the antenna during storage and transportation.
[0044] In addition, a connector 14 is provided at the bottom end of the central body 1, and the connector 14 is connected to the base 15 in a rotatable manner. Through this connection design, the entire antenna can achieve flexible angle adjustment. When storage is required, the antenna can be deflected downward by means of the rotating connection structure between the connector 14 and the base 15 until it reaches a horizontal state, thereby further reducing the occupied space and achieving a more compact storage effect; and when the antenna needs to work, the antenna can be deflected upward until it reaches a vertical state or an inclined state, at which time the antenna enters a working state and can efficiently perform tasks such as signal transmission and reception.
[0045] In some special environments, such as deep space exploration or extreme weather conditions, it is necessary to use deployable antennas to meet special communication needs. The new solid-surface antenna provided in this embodiment can adapt to these special environments through its deployable design. Moreover, modern communication networks have increasing requirements for base station antennas, and antennas are developing in the direction of miniaturization, intelligence and greening. The development of the new solid-surface antenna structure in this embodiment can meet these new demands, increase network capacity, improve signal coverage and enhance transmission reliability. At the same time, solid-surface antennas are known for their high reliability, high precision and thermal stability. The development of the new solid-surface antenna structure in this embodiment can further improve these performances, especially when there are too many rotating pairs and there are high-pair structures such as ball joints and universal joints that affect the shape and surface accuracy of the antenna structure.
[0046] The above embodiments are preferred implementation schemes of the present invention. Any obvious replacements without departing from the concept of the present technical solution are within the protection scope of the present invention.
Claims
1. A "bud" structure solid surface deployable antenna, characterized in that: The invention comprises a central body (1), wherein a plurality of groups of antenna panels (2) are evenly distributed on the central body (1) along a circumferential direction, wherein each group of antenna panels (2) comprises a plurality of panels having a fan-shaped structure and having an arc surface, and each panel can deflect upward and downward relative to the central body (1); the central body (1) is provided with adjustment rings (3) whose number is the same as the number of panels included in each group of antenna panels (2); each panel in each group of antenna panels (2) is connected to the adjustment rings (3) in a one-to-one correspondence, and each adjustment ring (3) can rotate around the central body (1); When the antenna is folded, each panel in each group of antenna panels (2) can be deflected upwards under the rotation of the corresponding adjustment ring (3), so that each panel in each group of antenna panels (2) is distributed in order from the inside to the outside, and panels in the same position are adjacent to each other, thereby forming a multi-layered encircling structure; When the antenna is deployed, each panel in each group of antenna panels (2) can be deflected downward under the drive of the corresponding adjustment ring (3) to rotate in the opposite direction, so that each panel in each group of antenna panels (2) is distributed in sequence along the circumferential direction and spliced around the central body (1) to form a curved antenna structure.
2. The "bud" structure solid surface deployable antenna according to claim 1, characterized in that: Two upper and lower spaced constraint rings (4a, 4b) are fixedly connected to the central body (1); the innermost panel in each group of antenna panels (2) when the antenna is in a folded state is connected to the upper constraint ring (4a), and the other panels are connected to the lower constraint ring (4b).
3. The "bud" structure solid surface deployable antenna according to claim 2, characterized in that: A rotatable ring sleeve (5) is sleeved on the upper restraining ring (4a), and a corresponding panel is mounted on the ring sleeve (5).
4. The "bud" structure solid surface deployable antenna according to claim 2 or 3, characterized in that: The innermost panel in each group of antenna panels (2) in the antenna folded state is connected to the corresponding adjustment ring (3) via a primary linkage rod (6), and both ends of the primary linkage rod (6) are movably connected to the corresponding panel and the adjustment ring (3) via a ball pair structure (7), and the other panels are connected to the corresponding adjustment ring (3) via a secondary linkage rod (8), and one end of the secondary linkage rod (8) is movably connected to the corresponding adjustment ring (3) via the ball pair structure (7), and the other end is movably connected to the corresponding panel and the constraint ring (4b) at the lower end via a cell-changing mechanism (9).
5. The "bud" structure solid surface deployable antenna according to claim 4, characterized in that: The metamorphosis mechanism (9) comprises a fixed rod (9a), a first movable rod (9b), a second movable rod (9c) and a third movable rod (9d); the fixed rod (9a) is vertically mounted on the back of a corresponding panel and its upper and lower ends are respectively movably connected to the ends of the first movable rod (9b) and the third movable rod (9d); the other ends of the first movable rod (9b) and the third movable rod (9d) are respectively movably connected to the upper and lower ends of the second movable rod (9c); a connecting seat (10) is provided on the restraining ring (4b) at the lower end; the other end of the third movable rod (9d) is coaxially mounted on the connecting seat (10) with the lower end of the second movable rod (9c); and the secondary linkage rod (8) corresponding to the metamorphosis mechanism (9) is connected to the first movable rod (9b).
6. The "bud" structure solid surface deployable antenna according to claim 5, characterized in that: A first elastic return member (9e) is provided between the first movable rod (9b) and the third movable rod (9d) and is capable of forcing them to move closer together after they move away from each other. A second elastic return member (9f) is provided on the restraining ring (4b) at the lower end or the connecting seat (10) provided thereon and is capable of forcing the second movable rod (9c) to deflect downward after the second movable rod (9c) deflects upward relative to the restraining ring (4b) or the connecting seat (10).
7. The "bud" structure solid surface deployable antenna according to claim 6, characterized in that: The second movable rod (9c) is provided with a folding limit portion (9c1) for limiting excessive folding between the second movable rod (9c) and the first movable rod (9b), and the connecting seat (10) is provided with an unfolding limit portion (10a) for limiting excessive downward rotation of the second movable rod (9c).
8. The "bud" structure solid surface deployable antenna according to claim 6, characterized in that: The metamorphosis mechanism (9) is configured as When the first movable rod (9b) is abutted by the folding limit portion (9c1) and the second movable rod (9c) is not abutted by the unfolding limit portion (10a), the fixed rod (9a), the first movable rod (9b), the second movable rod (9c), the third movable rod (9d) and the first elastic reset member (9e) contained therein can form an integral structure capable of rotating synchronously with respect to the restraining ring (4b) or the connecting seat (10) at the lower end; When the first movable rod (9b) is not abutted by the folding limit portion (9c1) and the second movable rod (9c) is abutted by the unfolding limit portion (10a), the fixed rod (9a), the first movable rod (9b), the second movable rod (9c), the third movable rod (9d) and the first elastic reset member (9e) contained therein can form a double rocker four-bar mechanism with the first movable rod (9b) as the main rod and the second movable rod (9c) as the frame.
9. The "bud" structure solid surface deployable antenna according to claim 6, characterized in that: The elastic force of the first elastic reset member (9e) is smaller than the elastic force of the second elastic reset member (9f).
10. The "bud" structure solid surface deployable antenna according to claim 2, characterized in that: The projections of the connection parts between each panel and the corresponding restraint ring (4a, 4b) on the radial plane of the central body (1) are distributed at equal angles.