A locking device for deploying and retracting an umbrella antenna and the umbrella antenna.

Abstract

This application belongs to the field of vehicle-mounted antenna technology, and discloses a locking device for deploying and retracting an umbrella-shaped antenna, as well as the umbrella-shaped antenna itself. The locking device includes a locker, an deployment locking seat, and a retraction locking seat. When the umbrella-shaped antenna needs to be retracted during transportation, the umbrella reflector rotates to retract in a left-hand or right-hand direction, greatly reducing the size of the umbrella-shaped antenna. The locking pin of the locker for each panel unit is inserted into the retraction locking hole of the retraction locking seat of the rear panel unit in the direction of rotation, thereby connecting all the panel units into a whole and reducing mutual collisions of the umbrella-shaped antenna during transportation. When the umbrella-shaped antenna needs to be deployed upon arrival at its destination, the umbrella reflector unfolds into an umbrella shape, and the locking pin of the locker for each panel unit is inserted into the unfolding locking hole of the unfolding locking seat of the rear panel unit in the direction of rotation, thereby connecting all the panel units into a single umbrella-shaped unit, ensuring that the umbrella-shaped antenna maintains a stable unfolded shape during operation.

Description

Technical Field

[0001] This application relates to the field of vehicle-mounted antenna technology, and in particular to a locking device for deploying and retracting an umbrella antenna and an umbrella antenna. Background Technology

[0002] Vehicle-mounted antenna equipment has gained widespread attention in modern combat systems due to its advantages such as strong real-time information acquisition capabilities and high mobility for relocation and transportation.

[0003] For vehicle-mounted antennas, the structural features of umbrella antennas offer a greater storage ratio, resolving the conflict between antenna aperture and ease of storage and transportation.

[0004] Compared to typical folding antennas, umbrella antennas have a more complex structure, placing higher demands on their deployment and reception processes. After deployment, the antenna needs to be secured in place by a locking mechanism; failure of the lock will affect the antenna's stability and performance. Since vehicle-mounted antennas are frequently in transit, road bumps inevitably cause impacts and vibrations to the antenna, affecting the stability of the deployment and reception process.

[0005] In related technologies, the reliability of the deployment and reception locking device of the umbrella antenna is poor. The locking device is prone to failure when subjected to impact force, which affects the reception accuracy of the umbrella antenna in the deployed state. Summary of the Invention

[0006] This application provides a locking device and an umbrella antenna for deploying and retracting an umbrella antenna, which can solve the technical problem of unreliable locking caused by the easy failure of the antenna locking mechanism in the prior art. The technical solution is as follows:

[0007] On one hand, a locking device for deploying and retracting an umbrella-shaped antenna is provided. The umbrella-shaped antenna includes an umbrella-shaped reflector and a central body located at the center of the umbrella-shaped reflector. The umbrella-shaped reflector includes a plurality of rigid panel units evenly distributed circumferentially along the central body. The umbrella-shaped reflector has an deployed state in an umbrella shape and a retracted state in a left-hand or right-hand rotation. The locking device includes: a locker, a deployment locking seat, and a retraction locking seat. The locker is fixedly connected to the outer surface of the panel unit, and its installation position corresponds to the tail end of the panel unit in the rotational retraction direction of the umbrella-shaped reflector; the locker has a locking pin. The deployment locking seat is fixedly connected to the surface of the panel unit away from the central body, and its installation position corresponds to the head end of the panel unit in the rotational retraction direction of the umbrella-shaped reflector; the deployment locking seat has a deployment locking hole. The retraction locking seat is fixedly connected to the outer surface of the panel unit away from the central body, and the retraction locking seat has a retraction locking hole.

[0008] When the umbrella reflector is deployed, the locking pin of each panel unit is inserted into the deployment locking hole on the circumferentially adjacent panel unit to keep the umbrella reflector in the deployed state;

[0009] When the umbrella reflector is retracted, the locking pin on each panel unit is inserted into the retraction locking hole of the circumferentially adjacent panel unit to keep the umbrella reflector in the rotated retracted state.

[0010] Optionally, the unfolding locking seat includes a first fixing plate, a first connecting plate is provided on one side of the first fixing plate, the first connecting plate is connected to a first cylinder, and the inner hole of the first cylinder is the unfolding locking hole.

[0011] Optionally, the retractable locking seat includes a second fixing plate and a second cylinder. A second connecting plate is provided on one side of the second fixing plate, and the second connecting plate has at least two rows of connecting holes. A third connecting plate is provided on the side of the second cylinder, and the third connecting plate has at least two oblong holes. The second cylinder is connected to the second fixing plate by bolts and nuts, and the inner hole of the second cylinder is the retractable locking hole.

[0012] Optionally, each panel unit is configured with two lockers arranged radially along the panel unit; each panel unit is configured with two unfolding locking seats arranged radially along the panel unit, and each locker corresponds to one unfolding locking seat.

[0013] Optionally, the panel unit has a proximal end near the center body and a distal end away from the center body; each panel unit is configured with a folding locking seat, the distance between the folding locking seat and the proximal end being equal to the distance between any one of the two unfolding locking seats and the proximal end.

[0014] Optionally, the locking device is an electric cylinder, which includes a motor, a reducer, a cylinder body, a lead screw and nut mechanism, an anti-rotation plate, and a piston rod; the piston rod is connected to the nut, and the locking pin is the end of the piston rod located outside the cylinder body; the lead screw and nut mechanism includes a lead screw and a nut; the output shaft of the motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to the lead screw; the nut is movably disposed within the cylinder body, the anti-rotation plate is fixedly connected to the inner surface of the cylinder body, and the outer surface of the nut is provided with an anti-rotation groove, into which the anti-rotation plate is inserted.

[0015] Optionally, the locking device for deploying and retracting the umbrella antenna further includes a controller, and the electric cylinder further includes a forward limit switch and a return limit switch. Both the forward limit switch and the return limit switch are electrically connected to the controller. The forward limit switch is connected to the front end of the cylinder body and is used to control the extension position of the piston rod. The return limit switch is connected to the rear end of the cylinder body and is used to control the retraction position of the piston rod.

[0016] Optionally, the inner wall of the first cylinder facing the lock is provided with a first guide slope, which is used to guide the locking pin into the unfolding locking hole.

[0017] Optionally, a second guide slope is provided on the inner wall of the end of the second cylinder facing the locker, the second guide slope being used to guide the locking pin into the retractable locking hole.

[0018] The beneficial effects of the technical solutions provided in this application include at least the following:

[0019] A locking device for deploying and retracting an umbrella-shaped antenna includes: a locker, an deployment locking seat, and a retraction locking seat. When the umbrella-shaped antenna needs to be retracted during transportation, the umbrella reflector rotates in a left-hand or right-hand direction to retract, significantly reducing the size of the antenna. The locking pin of the locker for each panel unit inserts into the retraction locking hole of the retraction locking seat of the rear panel unit in the direction of rotation, thereby connecting all panel units into a single unit and reducing collisions during transportation. When the umbrella-shaped antenna needs to be deployed upon arrival at its destination, the umbrella reflector unfolds into an umbrella shape. The locking pin of the locker for each panel unit inserts into the unfolding locking hole of the unfolding locking seat of the rear panel unit in the direction of rotation, thereby connecting all panel units into a single umbrella-shaped unit, ensuring that the umbrella-shaped antenna maintains a stable deployed shape during operation.

[0020] On the other hand, an umbrella-shaped antenna is provided, comprising an umbrella-shaped reflector having an deployed state and a retracted state with either a left-hand or right-hand rotation. The umbrella-shaped reflector is held in the deployed or retracted state by the aforementioned locking device for deploying and retracting the umbrella-shaped antenna. The beneficial effects of the umbrella-shaped antenna are described above in the section on the locking device for deploying and retracting the umbrella-shaped antenna, and will not be repeated here.

[0021] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional schematic diagram of the umbrella antenna provided in the embodiment of this application in the deployed state;

[0024] Figure 2 This is a front view of the umbrella antenna provided in the embodiment of this application in its deployed state;

[0025] Figure 3 This is a three-dimensional schematic diagram of the umbrella antenna provided in the embodiment of this application in the retracted state;

[0026] Figure 4 This is a front view of the umbrella antenna provided in the embodiment of this application in the retracted state;

[0027] Figure 5 This is a front view of a panel unit in the umbrella antenna provided in this application embodiment;

[0028] Figure 6 This is a front view of three panel units in the umbrella antenna provided in this embodiment of the application;

[0029] Figure 7 yes Figure 8 A magnified view of a section at point A in the middle;

[0030] Figure 8 This is a three-dimensional schematic diagram of the deployment locking seat in the umbrella-shaped antenna provided in the embodiments of this application;

[0031] Figure 9 This is a front view of a partial cross-section of the first cylinder in the deployment locking seat of the umbrella antenna provided in this application embodiment;

[0032] Figure 10 This is a three-dimensional schematic diagram of the second fixing plate in the collapsible locking seat of the umbrella antenna provided in the embodiments of this application;

[0033] Figure 11 This is a three-dimensional schematic diagram of the second cylinder in the collapsible locking seat of the umbrella antenna provided in the embodiments of this application;

[0034] Figure 12 It is a front view including a partial cross-section of the second cylinder when the second fixed plate and the second cylinder are combined.

[0035] Figure 13 This is a front cross-sectional view of the electric cylinder provided in the embodiment of this application;

[0036] Explanation of reference numerals in the attached figures

[0037] 1-Umbrella reflector; 101-Panel unit; 2-Center body; 3-Locker; 301-Locking pin; 302-Motor; 303-Reducer; 304-Cylinder body; 305-Screw and nut mechanism; 3051-Screw; 3052-Nut; 306-Anti-rotation plate; 307-Piston rod; 308-Forward limit switch; 309-Return limit switch; 4-Expanding locking seat; 401-Expanding locking hole; 402-First fixing plate; 403-First connecting plate; 404-First cylinder; 405-First guide slope; 5-Retracting locking seat; 501-Retracting locking hole; 502-Second fixing plate; 503-Second cylinder; 504-Second connecting plate; 5041-Connecting hole; 505-Third connecting plate; 5051-Oval hole; 506-Second guide slope. Detailed Implementation

[0038] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0039] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the relative positions of the corresponding components in the direction of gravity when they are in use, and "inner" and "outer" refer to their relative positions to the contours of the corresponding components themselves. Furthermore, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not have sequential or importance implications. In the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements.

[0040] According to the embodiments of this application, refer to Figures 1 to 4 As shown, the umbrella-shaped antenna includes an umbrella-shaped reflector 1 and a central body 2 located at the center of the umbrella-shaped reflector 1. The umbrella-shaped reflector 1 includes a plurality of rigid panel units 101 evenly distributed around the central body 2. The umbrella-shaped reflector 1 has an unfolded state in the shape of an umbrella, and a rotated and folded state in either a left-handed or right-handed manner. Since the panel units 101 are made of rigid material, the rotating and folding method can minimize the folded size of the umbrella-shaped antenna, thereby facilitating the storage and transportation of the umbrella-shaped antenna.

[0041] In related technologies, the locking structure of antennas mainly consists of a mechanical spring pin and an electromagnet. The principle of this locking structure is as follows: when locking, the contact slope of the spring pin encounters the locking seat, forcing the pin back. When the spring pin aligns with the locking hole, the locking pin 301 inserts into the locking hole and locks under the action of the spring. When unlocking, the electromagnet attracts the pin, thus removing it from the locking hole. To ensure reliable attraction, the electromagnet's attraction force is set relatively high, causing it to quickly complete the insertion and removal action after reaching the effective distance. Although the time is short, the high speed and large impact can affect the lifespan of the spring and the locking pin 301. Furthermore, during antenna operation, the electromagnetic field generated at the antenna feed will induce an additional current in the electromagnet's coil, potentially causing the electromagnet to overheat and degrade its performance. Therefore, the locking structure in related technologies has multiple potential failures, such as electromagnet failure, spring failure, and piston rod 307 jamming, resulting in poor reliability of the deployment and reception locking state of the umbrella antenna.

[0042] Firstly, according to the embodiments of this application, reference is made to... Figures 5 to 13 As shown, a locking device for deploying and retracting an umbrella-shaped antenna is provided. The locking device includes: a locker 3, an deploying locking seat 4, and a retracting locking seat 5.

[0043] Among them, reference Figures 5 to 7 As shown, the locking device 3 can be fixedly connected to the outer surface of the panel unit 101, and its installation position corresponds to the tail end of the panel unit 101 in the rotational retraction direction of the umbrella reflector 1; the locking device 3 has a locking pin 301.

[0044] refer to Figures 5 to 7 As shown, the unfolding locking seat 4 can be fixedly connected to the surface of the panel unit 101 away from the central body 2, and its installation position corresponds to the first end of the panel unit 101 in the rotation and retraction direction of the umbrella reflector 1; the unfolding locking seat 4 has an unfolding locking hole 401.

[0045] refer to Figures 5 to 7 As shown, the retractable locking seat 5 can be fixedly connected to the outer surface of the panel unit 101 away from the central body 2, and the retractable locking seat 5 has a retractable locking hole 501.

[0046] Thus, when the umbrella reflector 1 is unfolded, the locking pin 301 of each panel unit 101 is inserted into the unfolding locking hole 401 on the circumferentially adjacent panel unit 101 to keep the umbrella reflector 1 in the unfolded state; when the umbrella reflector 1 is retracted, the locking pin 301 of each panel unit 101 is inserted into the retracting locking hole 501 on the circumferentially adjacent panel unit 101 to keep the umbrella reflector 1 in the rotated retracted state.

[0047] In the above embodiments, when the umbrella antenna needs to be folded up during transportation, the umbrella reflector 1 is rotated in a left-hand or right-hand direction to fold up, greatly reducing the size of the umbrella antenna. The locking pin 301 of the locking device 3 of each panel unit 101 is inserted into the folding locking hole 501 of the folding locking seat 5 of the rear panel unit 101 in the rotation direction, thereby connecting all the panel units 101 into a whole and reducing mutual collisions of the umbrella antenna during transportation. When the umbrella antenna needs to be unfolded upon arrival at its destination, the umbrella reflector 1 unfolds into an umbrella shape, and the locking pin 301 of the locking device 3 of each panel unit 101 is inserted into the unfolding locking hole 401 of the unfolding locking seat 4 of the rear panel unit 101 in the rotation direction, thereby connecting all the panel units 101 into a whole umbrella shape, ensuring that the umbrella antenna maintains a stable unfolded shape during operation.

[0048] According to the embodiments of this application, refer to Figure 8 and Figure 9 As shown, the unfolding locking seat 4 includes a first fixing plate 402, which is used to fix and connect to the outer surface of the panel unit 101. A first connecting plate 403 is provided on one side of the first fixing plate 402, and a first cylinder 404 is connected to the first connecting plate 403. The inner hole of the first cylinder 404 is the unfolding locking hole 401. In the above embodiment, the unfolding locking seat 4 functions in the working state of the umbrella antenna. This working condition has strict requirements on the surface accuracy of the umbrella antenna, and the locking position needs to have high positioning accuracy. At this time, the adjustment space of the locking pin 301 is only the locking and unlocking along the axial direction. Therefore, in this embodiment, the first fixing plate 402 and the first cylinder 404 are integrally formed, which can ensure that the antenna has high accuracy in the unfolded state.

[0049] According to the embodiments of this application, refer to Figures 10 to 12 As shown, the folding locking seat 5 may include a second fixing plate 502 and a second cylinder 503. A second connecting plate 504 is provided on one side of the second fixing plate 502, and the second connecting plate 504 has at least two rows of connecting holes 5041. A third connecting plate 505 is provided on the side of the second cylinder 503, and the third connecting plate 505 has at least two oblong holes 5051. The second cylinder 503 is connected to the second fixing plate 502 by bolts and nuts, and the inner hole of the second cylinder 503 is the folding locking hole 501. In the above embodiment, for the umbrella antenna in the folded state, due to various factors such as transportation bumps, the relative position may change each time it is folded. In order to prevent this situation from causing the folding locking hole 501 to misalign with the locking pin 301, thereby causing the locking to jam, the second cylinder 503 and the second fixing plate 502 are set as two separate parts, and the oblong holes 5051 are provided on the third connecting plate 505 to facilitate the adjustment of the position of the folding locking hole 501.

[0050] According to the embodiments of this application, refer to Figure 5 and Figure 6 As shown, in order to improve the surface accuracy of the umbrella reflector 1 in the unfolded state, each panel unit 101 may be equipped with two locking devices 3, which are arranged radially along the panel unit 101. Each panel unit 101 is equipped with two unfolding locking seats 4, which are arranged radially along the panel unit 101, and each locking device 3 corresponds to one unfolding locking seat 4.

[0051] According to the embodiments of this application, refer to Figure 5 and Figure 6 As shown, the panel unit 101 has a proximal end close to the central body 2 and a distal end away from the central body 2.

[0052] Each panel unit 101 is equipped with a retractable locking seat 5, the distance between the retractable locking seat 5 and the proximal end being equal to the distance between either of the two deployable locking seats 4 and the proximal end. Since the umbrella antenna can only be in either a deployed or retracted state, this design allows the umbrella reflector 1 to share the locking device 3 in both deployed and retracted states, eliminating the need for separate locking devices 3 for each state. Specifically, when the umbrella reflector 1 is in the deployed state, the locking pin 301 of the locking device 3 can be inserted into the deployable locking hole 401 of the deployable locking seat 4. When the umbrella reflector 1 is in the retracted state, the locking pin 301 of the locking device 3 can be inserted into the retractable locking hole 501 of the retractable locking seat 5.

[0053] According to the embodiments of this application, refer to Figure 13 As shown, the locking device 3 is an electric cylinder, which includes a motor 302, a reducer 303, a cylinder body 304, a lead screw and nut mechanism 305, an anti-rotation plate 306, and a piston rod 307. The piston rod 307 is connected to the nut 3052, and the locking pin 301 is the end of the piston rod 307 located outside the cylinder body 304. The output shaft of the motor 302 is connected to the input shaft of the reducer 303, and the output shaft of the reducer 303 is connected to the lead screw 3051. The nut 3052 is movably disposed inside the cylinder body 304, and the anti-rotation plate 306 is fixedly connected to the inner surface of the cylinder body 304. The outer surface of the nut 3052 is provided with an anti-rotation groove, and the anti-rotation plate 306 is inserted into the anti-rotation groove.

[0054] In the above embodiment, a lead screw and nut mechanism 305 is specifically used to convert the rotational motion of the motor 302 into the linear motion of the piston rod 307. The rotation output from the motor 302 is reduced and amplified by the reducer 303 before being transmitted to the lead screw 3051. As the lead screw 3051 rotates, it drives the nut 3052 to move axially along the lead screw 3051 through a threaded engagement. To ensure the accuracy of the linear motion, an anti-rotation groove is formed on the outer surface of the nut 3052, which cooperates with the anti-rotation plate 306 to restrict the rotational freedom of the nut 3052, reduce rotational friction, extend the service life of the nut 3052, enhance the stability of the nut 3052 during movement, and improve the system rigidity. The linear motion of the nut 3052 drives the piston rod 307 to move linearly along the cylinder 304, thereby driving the locking pin 301 to move. The extension or retraction of the locking pin 301 can be achieved by controlling the forward and reverse rotation of the motor 302. That is, the extension and movement of the locking pin 301 are controllable. Furthermore, due to the speed reduction of the reducer 303, the movement speed of the locking pin 301 is slow relative to the electromagnet attraction. The locking pin 301 can adaptively adjust during insertion into the unfolding locking hole 401 or retraction locking hole 501, thereby avoiding damage to the umbrella antenna from impact constraints. In addition, the lead screw 3051, nut 3052, and mechanism 305 themselves have self-locking properties. Even with impact forces, the locking pin 301 will not retract from the unfolding locking hole 401 or retraction locking hole 501. Therefore, using the electric cylinder of the lead screw 305, nut 3052, and mechanism 305 of this application as the drive mechanism for the locking pin 301 is safer and more reliable.

[0055] According to an embodiment of this application, in order to facilitate adjustment of the extension and retraction strokes of the locking pin 301, refer to... Figure 13 As shown, the locking device for deploying and retracting the umbrella antenna also includes a controller, a forward limit switch 308, and a return limit switch 309. Both the forward limit switch 308 and the return limit switch 309 are electrically connected to the controller. The forward limit switch 308 is connected to the front end of the cylinder 304 and is used to control the extension position of the piston rod 307. The return limit switch 309 is connected to the rear end of the cylinder 304 and is used to control the retraction position of the piston rod 307.

[0056] According to the embodiments of this application, refer to Figure 9As shown, the inner wall of the first cylinder 404 facing the locker 3 has a first guide slope 405. The first guide slope 405 guides the locking pin 301 into the unfolding locking hole 401. Thus, when the locking pin 301 is inserted into the unfolding locking hole 401, the head of the locking pin 301 abuts against the first guide slope 405, which guides the locking pin 301 to align with the unfolding locking hole 401. Similarly, refer to... Figure 12 As shown, the inner wall of the second cylinder 503 facing the locking device 3 is provided with a second guide slope 506. The second guide slope 506 is used to guide the locking pin 301 into the retractable locking hole 501. When the locking pin 301 is inserted into the retractable locking hole 501, the head of the locking pin 301 abuts against the second guide slope 506, and the second guide slope 506 can guide the locking pin 301 to align with the retractable locking hole 501.

[0057] The implementation principle of this application will be explained below in conjunction with the deployment and reception locking process of an umbrella antenna:

[0058] The locking process of the deployed state when the umbrella antenna is in operation:

[0059] When switching the umbrella antenna from the collapsible transport state to the working state, the specific steps are as follows:

[0060] When the motor 302 is started to rotate in the reverse direction, the motor 302 drives the lead screw 3051 to rotate. While the lead screw 3051 rotates, it restricts the rotation of the nut 3052. The nut 3052 then moves along the cylinder body 304, causing the piston rod 307 to retract axially. The locking pin 301 is pulled out from the retracting locking hole 501 of the retracting locking seat 5. After the locking pin 301 is completely pulled out, the return limit switch 309 senses its position. After the piston rod 307 is fully retracted, the motor 302 stops working. Subsequently, the antenna's retraction and deployment driver drives the umbrella reflector 1 to unfold. After the umbrella reflector 1 is fully unfolded, the motor 302 is started to rotate in the forward direction. The motor 302 drives the lead screw 3051 to rotate. While the lead screw 3051 rotates, it restricts the rotation of the nut 3052. The nut 3052 then moves along the cylinder 304, causing the piston rod 307 to extend axially. After the locking pin 301 is inserted into the unfolding locking hole 401 of the unfolding locking seat 4, the forward limit switch 308 senses its position. After reaching the predetermined locking position, the motor 302 stops working.

[0061] The locking process when the umbrella antenna is in the retracted state:

[0062] When switching the umbrella antenna from the deployed state to the retracted state, the specific steps are as follows:

[0063] When the motor 302 is started to rotate in the reverse direction, the motor 302 drives the lead screw 3051 to rotate. While the lead screw 3051 rotates, it restricts the rotation of the nut 3052. The nut 3052 then moves along the cylinder body 304, causing the piston rod 307 to retract axially. The locking pin 301 is pulled out from the unfolding locking hole 401 of the unfolding locking seat 4. After the locking pin 301 is completely pulled out, the return limit switch 309 senses its position. After the piston rod 307 is fully retracted, the motor 302 stops working. Subsequently, the antenna retraction driver drives the umbrella reflector 1 to retract. After the umbrella reflector 1 is fully retracted, the motor 302 is started to rotate in the forward direction. The motor 302 drives the lead screw 3051 to rotate. While the lead screw 3051 rotates, it restricts the rotation of the nut 3052. The nut 3052 moves along the cylinder 304, driving the piston rod 307 to extend axially. After the locking pin 301 is inserted into the retraction locking hole 501 of the retraction locking seat 5, the forward limit switch 308 senses its position. After reaching the predetermined locking position, the motor 302 stops working.

[0064] Secondly, this application also provides an umbrella-shaped antenna, which includes an umbrella-shaped reflector 1. The umbrella-shaped reflector 1 has an unfolded state in the shape of an umbrella surface and a rotated and retracted state in a left-handed or right-handed manner. The umbrella-shaped reflector 1 is held in the unfolded state or the rotated and retracted state by the aforementioned locking device for deploying and retracting the umbrella-shaped antenna. The beneficial effects of the umbrella-shaped antenna are described above in the context of the locking device for deploying and retracting the umbrella-shaped antenna, and will not be repeated here.

[0065] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0066] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0067] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A locking device for deploying and retracting an umbrella-shaped antenna, the umbrella-shaped antenna comprising an umbrella-shaped reflector (1) and a central body (2) located at the center of the umbrella-shaped reflector (1), the umbrella-shaped reflector (1) comprising a plurality of rigid panel units (101) uniformly distributed circumferentially along the central body (2), the umbrella-shaped reflector (1) having an deployed state in the shape of an umbrella, and a retracted state in a left-handed or right-handed rotation, characterized in that, The locking device includes: Locking device (3) is fixedly connected to the outer surface of the panel unit (101), and its installation position corresponds to the tail end of the panel unit (101) in the rotational retraction direction of the umbrella reflector (1); the locking device (3) has a locking pin (301). An unfolding locking seat (4) is fixedly connected to the surface of the panel unit (101) away from the central body (2), and its installation position corresponds to the first end of the panel unit (101) in the rotation and retraction direction of the umbrella reflector (1); the unfolding locking seat (4) has an unfolding locking hole (401). A retractable locking seat (5) is fixedly connected to the outer surface of the panel unit (101) away from the center body (2), and the retractable locking seat (5) has a retractable locking hole (501). When the umbrella reflector (1) is unfolded, the locking pin (301) of each panel unit (101) is inserted into the unfolding locking hole (401) on the circumferentially adjacent panel unit (101) so that the umbrella reflector (1) remains in the unfolded state; When the umbrella reflector (1) is retracted, the locking pin (301) on each panel unit (101) is inserted into the retraction locking hole (501) of the circumferentially adjacent panel unit (101) so that the umbrella reflector (1) remains in the rotated retracted state. The locking device (3) is an electric cylinder, which includes a motor (302), a reducer (303), a cylinder body (304), a lead screw and nut mechanism (305), an anti-rotation plate (306), and a piston rod (307); the lead screw and nut mechanism (305) includes a lead screw (3051) and a nut (3052); the piston rod (307) is connected to the nut (3052), and the locking pin (301) is used when the piston rod (307) is located in the cylinder body (304). 04) The outer end; the output shaft of the motor (302) is connected to the input shaft of the reducer (303), and the output shaft of the reducer (303) is connected to the lead screw (3051); the nut (3052) is movably disposed in the cylinder (304), the anti-rotation plate (306) is fixedly connected to the inner surface of the cylinder (304), the outer surface of the nut (3052) is provided with an anti-rotation groove, and the anti-rotation plate (306) is inserted into the anti-rotation groove.

2. The locking device for deploying and retracting an umbrella-shaped antenna according to claim 1, characterized in that, The unfolding locking seat (4) includes a first fixing plate (402), a first connecting plate (403) is provided on one side of the first fixing plate (402), the first connecting plate (403) is connected to a first cylinder (404), and the inner hole of the first cylinder (404) is the unfolding locking hole (401).

3. The locking device for deploying and retracting an umbrella-shaped antenna according to claim 1, characterized in that, The retractable locking seat (5) includes a second fixing plate (502) and a second cylinder (503). A second connecting plate (504) is provided on one side of the second fixing plate (502). The second connecting plate (504) has at least two rows of connecting holes (5041). A third connecting plate (505) is provided on the side of the second cylinder (503). The third connecting plate (505) has at least two waist-shaped holes (5051). The second cylinder (503) is connected to the second fixing plate (502) by bolts and nuts. The inner hole of the second cylinder (503) is the retractable locking hole (501).

4. The locking device for deploying and retracting an umbrella-shaped antenna according to claim 1, characterized in that, Each of the panel units (101) is equipped with two lockers (3), and the two lockers (3) are arranged radially along the panel unit (101); Each panel unit (101) is provided with two unfolding locking seats (4), the two unfolding locking seats (4) are arranged radially along the panel unit (101), and each locker (3) corresponds to one unfolding locking seat (4).

5. The locking device for deploying and retracting an umbrella-shaped antenna according to claim 4, characterized in that, The panel unit (101) has a proximal end close to the central body (2) and a distal end away from the central body (2); Each panel unit (101) is provided with a folding locking seat (5), the distance between the folding locking seat (5) and the proximal end being equal to the distance between any one of the two unfolding locking seats (4) and the proximal end.

6. The locking device for deploying and retracting an umbrella-shaped antenna according to claim 1, characterized in that, The locking device for deploying and retracting the umbrella antenna also includes a controller, and the electric cylinder also includes a forward limit switch (308) and a return limit switch (309). The forward limit switch (308) and the return limit switch (309) are both electrically connected to the controller. The forward limit switch (308) is connected to the front end of the cylinder body (304) and is used to control the extension position of the piston rod (307). The return limit switch (309) is connected to the rear end of the cylinder body (304) and is used to control the retraction position of the piston rod (307).

7. The locking device for deploying and retracting an umbrella-shaped antenna according to claim 2, characterized in that, The inner wall of the first cylinder (404) facing the lock (3) is provided with a first guide slope (405), which is used to guide the locking pin (301) to be inserted into the unfolded locking hole (401).

8. The locking device for deploying and retracting an umbrella-shaped antenna according to claim 3, characterized in that, The inner wall of the second cylinder (503) facing the lock (3) is provided with a second guide slope (506), which is used to guide the locking pin (301) to be inserted into the closing locking hole (501).

9. An umbrella-shaped antenna, characterized in that, The umbrella antenna includes an umbrella reflector (1), which has an unfolded state in the shape of an umbrella and a rotated and retracted state in a left-handed or right-handed manner. The umbrella reflector (1) is held in the unfolded state or the rotated and retracted state by a locking device for deploying and retracting the umbrella antenna as described in any one of claims 1 to 8.

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