Locking device for unfolding and folding umbrella-shaped antenna and umbrella-shaped antenna

Abstract

The invention belongs to the technical field of vehicle-mounted antennas, and discloses a locking device for unfolding and folding of an umbrella-shaped antenna and the umbrella-shaped antenna, and the locking device comprises a locker, an unfolding locking seat and a folding locking seat. When the umbrella-shaped antenna needs to be folded in the transportation process, after the umbrella cover reflector is rotated and folded in the left rotating direction or the right rotating direction, the size of the umbrella-shaped antenna is greatly reduced, and the locking pin of the locking device of each panel unit is inserted into the folding locking hole of the folding locking seat of the rear panel unit in the rotating direction. Therefore, all the panel units are connected into a whole, and mutual collision of umbrella-shaped antennas in the transportation process is reduced. When the umbrella-shaped antenna arrives at a destination and needs to be unfolded, after the umbrella surface reflector is unfolded to form an umbrella shape, the locking pin of the locking device of each panel unit is inserted into the unfolding locking hole of the unfolding locking seat of the rear panel unit according to the rotation direction, so that all the panel units are connected into an umbrella-shaped whole, and the umbrella-shaped antenna is formed. And the umbrella-shaped antenna is ensured to keep a stable unfolding shape in the working process.

Description

Technical Field

[0001] This application relates to the technical field of vehicle-mounted antennas, and particularly to a locking device for the deployment and retraction of an umbrella-shaped antenna and an umbrella-shaped antenna. Background Art

[0002] Vehicle-mounted antenna devices have received extensive attention in modern combat systems due to their strong real-time information acquisition capabilities and high mobility during transfer and transportation.

[0003] For vehicle-mounted antennas, the structural characteristics of umbrella-shaped antennas have a larger storage ratio, which can solve the contradiction between the antenna aperture and the convenience of collection, transportation, and storage.

[0004] Compared with general folding antennas, the structure of umbrella-shaped antennas is more complex, posing higher requirements for their deployment and retraction processes. After the antenna is deployed, it needs to be fixed in place by a locking mechanism. If the locking fails, it will affect the stability and working performance of the antenna. Since vehicle-mounted antennas are often in a transportation state, the bumps on the road surface will inevitably cause impacts and vibrations on the antenna itself, which will affect the stability of the deployment and retraction processes.

[0005] In related technologies, the reliability of the deployment and retraction locking device of umbrella-shaped antennas is poor. When subjected to impact forces, the locking device is prone to failure, thereby affecting the reception accuracy of umbrella-shaped antennas in the deployed state. Summary of the Invention

[0006] An embodiment of this application provides a locking device for the deployment and retraction of an umbrella-shaped antenna and an umbrella-shaped 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 solutions are as follows:

[0007] On the one hand, a locking device for the deployment and retraction of an umbrella-shaped antenna is provided. The umbrella-shaped antenna includes an umbrella surface reflector and a central body located at the center of the umbrella surface reflector. The umbrella surface reflector includes a plurality of rigid panel units evenly distributed circumferentially along the central body. The umbrella surface reflector has a deployed state in the shape of an umbrella surface and a rotational retracted state in a left-handed or right-handed direction. The locking device includes: a lock, a deployment locking seat, and a retraction locking seat. Among them, the lock 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 surface reflector; the lock 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 surface 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] After the umbrella surface reflector is deployed, the locking pins of each panel unit are inserted into the deployment locking holes on the circumferentially adjacent panel units to keep the umbrella surface reflector in the deployed state;

[0009] After the umbrella surface reflector is retracted, the locking pins on each panel unit are inserted into the retraction locking holes on the circumferentially adjacent panel units to keep the umbrella surface reflector in the rotationally retracted state.

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

[0011] Optionally, the retraction locking seat includes a second fixing plate and a second cylinder, a second connecting plate is arranged on one side of the second fixing plate, the second connecting plate has at least two rows of connecting holes, a third connecting plate is arranged on the side of the second cylinder, the third connecting plate has at least two waist-shaped holes, the second cylinder is connected with the second fixing plate by bolts and nuts, and the inner hole of the second cylinder is the retraction locking hole.

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

[0013] Optionally, the panel unit has a proximal end close to the central body and a distal end far from the central body; each panel unit is configured with one retraction locking seat, and the distance between the retraction locking seat and the proximal end is equal to the distance between any one of the two deployment locking seats and the proximal end.

[0014] Optionally, the locker is an electric cylinder, and the electric cylinder includes a motor, a reducer, a cylinder body, a lead screw nut mechanism, a rotation prevention plate and a piston rod; the piston rod is connected with the nut, and the locking pin is the end of the piston rod outside the cylinder body; the lead screw nut mechanism includes a lead screw and a nut; the output shaft of the motor is connected with the input shaft of the reducer, the output shaft of the reducer is connected with the lead screw; the nut is movably arranged in the cylinder body, the rotation prevention plate is fixedly connected to the inner surface of the cylinder body, and a rotation prevention groove is arranged on the outer surface of the nut, and the rotation prevention plate is inserted into the rotation prevention groove.

[0015] Optionally, the locking device for the deployment and retraction of the umbrella-shaped antenna further includes a controller. 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 extended 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 retracted position of the piston rod.

[0016] Optionally, a first guiding inclined surface is provided on the inner wall of one end of the first cylinder facing the lock. The first guiding inclined surface is used to guide the locking pin to insert into the deployment locking hole.

[0017] Optionally, a second guiding inclined surface is provided on the inner wall of one end of the second cylinder facing the lock. The second guiding inclined surface is used to guide the locking pin to insert into the retraction locking hole.

[0018] The beneficial effects brought by the technical solution provided by the embodiments of the present application at least include:

[0019] A locking device for the deployment and retraction of an umbrella-shaped antenna includes: a lock, a deployment locking seat, and a retraction locking seat. When the umbrella-shaped antenna needs to be retracted during transportation, after the umbrella surface reflector rotates and retracts in the left or right rotation direction, the size of the umbrella-shaped antenna is greatly reduced. The locking pin of the lock of each panel unit inserts into the retraction locking hole of the retraction locking seat of the panel unit behind in the rotation direction, thereby connecting all the panel units into a whole, reducing the mutual collision of the umbrella-shaped antenna during transportation. When the umbrella-shaped antenna reaches the destination and needs to be deployed, after the umbrella surface reflector is deployed to form an umbrella shape, the locking pin of the lock of each panel unit inserts into the deployment locking hole of the deployment locking seat of the panel unit behind in the rotation direction, thereby connecting all the panel units into an umbrella-shaped whole, ensuring that the umbrella-shaped antenna maintains a stable deployed shape during operation.

[0020] On the other hand, an umbrella-shaped antenna is provided. The umbrella-shaped antenna includes an umbrella surface reflector. The umbrella surface reflector has a deployed state in the shape of an umbrella surface and a rotationally retracted state in the left or right rotation. The umbrella surface reflector uses the above-mentioned locking device for the deployment and retraction of the umbrella-shaped antenna to maintain the deployed state or the rotationally retracted state. For the beneficial effects of the umbrella-shaped antenna, refer to the beneficial effects of the above-mentioned locking device for the deployment and retraction of the umbrella-shaped antenna, which will not be elaborated here one by one.

[0021] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

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

[0024] Figure 2 is a front view of the umbrella-shaped antenna provided by the embodiment of the present application in the deployed state;

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

[0026] Figure 4 is a front view of the umbrella-shaped antenna provided by the embodiment of the present application in the retracted state;

[0027] Figure 5 is a front view of a panel unit in the umbrella-shaped antenna provided by the embodiment of the present application;

[0028] Figure 6 is a front view of three panel units in the umbrella-shaped antenna provided by the embodiment of the present application;

[0029] Figure 7 is Figure 8 a partial enlarged view of part A in;

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

[0031] Figure 9 is a front view of the deployment locking seat in the umbrella-shaped antenna provided by the embodiment of the present application including a partial section of the first cylinder;

[0032] Figure 10 is a three-dimensional schematic diagram of the second fixing plate in the retraction locking seat of the umbrella-shaped antenna provided by the embodiment of the present application;

[0033] Figure 11 is a three-dimensional schematic diagram of the second cylinder in the retraction locking seat of the umbrella-shaped antenna provided by the embodiment of the present application;

[0034] Figure 12 is a front view including a partial section of the second cylinder in the combined state of the second fixing plate and the second cylinder;

[0035] Figure 13 is a front sectional view of the electric cylinder provided by the embodiment of the present application;

[0036] Description of Reference Numerals

[0037] 1 - Umbrella Surface Reflector; 101 - Panel Unit; 2 - Central Body; 3 - Locker; 301 - Locking Pin; 302 - Motor; 303 - Reducer; 304 - Cylinder Block; 305 - Lead Screw Nut Mechanism; 3051 - Lead Screw; 3052 - Nut; 306 - Anti - rotation Plate; 307 - Piston Rod; 308 - Forward Limit Switch; 309 - Return Limit Switch; 4 - Deployment Locking Seat; 401 - Deployment Locking Hole; 402 - First Fixed Plate; 403 - First Connecting Plate; 404 - First Cylinder; 405 - First Guide Inclined Plane; 5 - Retraction Locking Seat; 501 - Retraction Locking Hole; 502 - Second Fixed Plate; 503 - Second Cylinder; 504 - Second Connecting Plate; 5041 - Connecting Hole; 505 - Third Connecting Plate; 5051 - Waist - shaped Hole; 506 - Second Guide Inclined Plane. Detailed Embodiment

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

[0039] In the present disclosure, unless otherwise stated, the orientation terms such as "upper" and "lower" generally refer to "upper" and "lower" relative to each other in the direction of gravity when the corresponding components are in the use state, and "inner" and "outer" refer to "inner" and "outer" relative to the contour of the corresponding component itself. In addition, the terms "first", "second", etc. used in the present disclosure are for distinguishing one element from another, and do not have sequentiality and importance. In the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements.

[0040] According to an embodiment of the present application, referring to Figures 1 to 4 as shown, the umbrella - shaped antenna includes an umbrella surface reflector 1 and a central body 2 located at the center of the umbrella surface reflector 1. The umbrella surface reflector 1 includes a plurality of rigid panel units 101 evenly distributed circumferentially along the central body 2. The umbrella surface reflector 1 has an unfolded state in the shape of an umbrella surface and a rotational retraction state that is left - handed or right - handed. Since the panel units 101 are made of rigid materials, the rotational retraction method can minimize the retraction size of the umbrella - shaped antenna, thereby facilitating the storage and transportation of the umbrella - shaped antenna.

[0041] In the related art, the locking structure of the antenna is mainly a mechanical spring pin plus an electromagnet. The principle of this locking structure is as follows: when locking, when the contact inclined surface of the spring pin touches the locking seat, the pin is forced to retract. When the spring pin aligns with the locking hole, under the action of the spring, the locking pin 301 is inserted into the locking hole for locking; when unlocking, the electromagnet attracts the pin, thereby withdrawing the pin from the locking hole. To ensure reliable adsorption, the suction force of the electromagnet is set to be relatively large, which causes the electromagnet to quickly complete the plugging and unplugging action after reaching the operating distance. Although the time consumption is short, due to the high speed, the impact is large, which will affect the service life of the spring and the locking pin 301. In addition, when the antenna is working, the electromagnetic field generated at the antenna feed will generate an additional induced current in the coil of the electromagnet, which may cause the electromagnet to overheat and reduce its performance. Therefore, there are various possibilities of failure in the locking structure in the related art, such as electromagnet failure, spring failure, and jamming of the piston rod 307, resulting in poor reliability of the unfolding and retracting locking state of the umbrella-shaped antenna.

[0042] In a first aspect, according to an embodiment of the present application, with reference to Figures 5 to 13 as shown, a locking device for the unfolding and retracting of an umbrella-shaped antenna is provided. The locking device includes: a lock 3, an unfolding locking seat 4, and a retracting locking seat 5.

[0043] Among them, with reference to Figures 5 to 7 as shown, the lock 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 rotation and retraction direction of the umbrella surface reflector 1; the lock 3 has a locking pin 301.

[0044] With reference 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 head end of the panel unit 101 in the rotation and retraction direction of the umbrella surface reflector 1; the unfolding locking seat 4 has an unfolding locking hole 401.

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

[0046] In this way, when the umbrella surface 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 surface reflector 1 in the unfolded state; when the umbrella surface reflector 1 is retracted, the locking pin 301 on each panel unit 101 is inserted into the retracting locking hole 501 on the circumferentially adjacent panel unit 101 to keep the umbrella surface reflector 1 in the rotation and retraction state.

[0047] In the above embodiments, when the umbrella-shaped antenna needs to be folded during transportation, after the umbrella surface reflector 1 is rotated and folded in the left-handed or right-handed direction, the size of the umbrella-shaped antenna is greatly reduced. The locking pin 301 of the lock 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, so as to connect all the panel units 101 into a whole, reducing the mutual collision of the umbrella-shaped antenna during transportation. When the umbrella-shaped antenna reaches the destination and needs to be unfolded, after the umbrella surface reflector 1 is unfolded to form an umbrella shape, the locking pin 301 of the lock 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, so as to connect all the panel units 101 into an umbrella-shaped whole, ensuring that the umbrella-shaped antenna maintains a stable unfolded shape during operation.

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

[0049] According to an embodiment of the present application, referring 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 arranged on one side of the second fixing plate 502, the second connecting plate 504 has at least two columns of connecting holes 5041, a third connecting plate 505 is arranged 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 with 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 embodiments, for the umbrella-shaped antenna in the folded state, due to various factors such as transportation bumps, relative position changes may occur each time in the folded state. In order to prevent the misalignment of the folding locking hole 501 and the locking pin 301 caused by this situation, which may lead to jamming of the locking, the second cylinder 503 and the second fixing plate 502 are set as two separate parts, and waist-shaped holes 5051 are arranged on the third connecting plate 505, which can facilitate the adjustment of the position of the folding locking hole 501.

[0050] According to an embodiment of the present application, with reference to Figure 5 and Figure 6 as shown, in order to improve the surface accuracy of the umbrella surface reflector 1 in the deployed state, each of the panel units 101 may be configured with two lockers 3, and the two lockers 3 are arranged along the radial direction of the panel unit 101. Each of the panel units 101 is configured with two deployment locking seats 4, the two deployment locking seats 4 are arranged along the radial direction of the panel unit 101, and each of the lockers 3 corresponds to one of the deployment locking seats 4.

[0051] According to an embodiment of the present application, with reference 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 far from the central body 2;

[0052] Each of the panel units 101 is configured with a retraction locking seat 5, and the distance between the retraction locking seat 5 and the proximal end is equal to the distance between any one of the two deployment locking seats 4 and the proximal end. Since the umbrella-shaped antenna can only be in the deployed state or the retracted state, by such a design, the umbrella surface reflector 1 can share the locker 3 in the deployed state and the retracted state, and there is no need to set a separate locker 3 for the deployed state and the retracted state. Specifically, when the umbrella surface reflector 1 is in the deployed state, the locking pin 301 of the locker 3 can be inserted into the deployment locking hole 401 of the deployment locking seat 4. When the umbrella surface reflector 1 is in the retracted state, the locking pin 301 of the locker 3 can be inserted into the retraction locking hole 501 of the retraction locking seat 5.

[0053] According to an embodiment of the present application, with reference to Figure 13 as shown, the locker 3 is an electric cylinder, and the electric cylinder includes a motor 302, a speed reducer 303, a cylinder body 304, a lead screw nut mechanism 305, a rotation stop 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 speed reducer 303, and the output shaft of the speed reducer 303 is connected to the lead screw 3051; the nut 3052 is movably arranged in the cylinder body 304, the rotation stop plate 306 is fixedly connected to the inner surface of the cylinder body 304, and a rotation stop groove is arranged on the outer surface of the nut 3052, and the rotation stop plate 306 is inserted into the rotation stop groove.

[0054] In the above embodiments, a lead screw nut mechanism 305 is specifically adopted to convert the rotational motion of the motor 302 into the linear motion of the piston rod 307. The rotation output by the motor 302 is decelerated and torque-increased by the speed reducer 303 and then transmitted to the lead screw 3051. While the lead screw 3051 rotates, the nut 3052 is driven to move axially along the lead screw 3051 through thread engagement. To ensure the linear motion accuracy, an anti-rotation groove is formed on the outer surface of the nut 3052 and cooperates with the anti-rotation plate 306 to limit the rotational freedom of the nut 3052, reduce the rotational friction of the nut 3052, extend the service life of the nut 3052, enhance the stability during the movement of the nut 3052, and improve the system rigidity. The linear motion of the nut 3052 drives the piston rod 307 to linearly move along the cylinder block 304, thereby driving the locking pin 301 to move. By controlling the forward and reverse rotation of the motor 302, the extension or retraction of the locking pin 301 can be achieved, that is, the extension and movement of the locking pin 301 are controllable. And through the speed reduction of the speed reducer 303, the moving speed of the locking pin 301 is slow relative to the attraction of the electromagnet. The locking pin 301 can adaptively adjust during the process of inserting into the deployment locking hole 401 or the retraction locking hole 501, thereby avoiding the damage to the umbrella-shaped antenna caused by the impact binding force. In addition, the lead screw 3051 nut 3052 lead screw 3051 nut 3052 mechanism 305 itself has self-locking property. Even if there is an impact external force, it will not cause the locking pin 301 to withdraw from the deployment locking hole 401 or the retraction locking hole 501. Therefore, using the electric cylinder of the lead screw 3051 nut 3052 lead screw 3051 nut 3052 mechanism 305 of the present application as the driving mechanism of the locking pin 301 is safer and more reliable.

[0055] According to an embodiment of the present application, to facilitate the adjustment of the extension stroke and the retraction stroke of the locking pin 301, refer to Figure 13 As shown, the locking device for the deployment and retraction of the umbrella-shaped antenna further includes a controller, 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 block 304 and is used to control the extension position of the piston rod 307. The return limit switch 309 is connected to the tail end of the cylinder block 304 and is used to control the retraction position of the piston rod 307.

[0056] According to an embodiment of the present application, refer to Figure 9As shown, on the inner wall of one end of the first cylinder 404 facing the lock 3, there is a first guiding inclined surface 405, and the first guiding inclined surface 405 is used to guide the locking pin 301 to insert into the deployment locking hole 401. In this way, when the locking pin 301 is inserted into the deployment locking hole 401, the head of the locking pin 301 abuts against the first guiding inclined surface 405, and the first guiding inclined surface 405 can guide the locking pin 301 to align with the deployment locking hole 401. Similarly, referring to Figure 12 As shown, on the inner wall of one end of the second cylinder 503 facing the lock 3, there is a second guiding inclined surface 506, and the second guiding inclined surface 506 is used to guide the locking pin 301 to insert into the retraction locking hole 501. When the locking pin 301 is inserted into the retraction locking hole 501, the head of the locking pin 301 abuts against the second guiding inclined surface 506, and the second guiding inclined surface 506 can guide the locking pin 301 to align with the retraction locking hole 501.

[0057] The implementation principle of the present application will be described below in combination with the deployment and retraction locking process of the umbrella-shaped antenna:

[0058] Locking process in the deployed state when the umbrella-shaped antenna is working:

[0059] When the umbrella-shaped antenna switches from the retracted transportation state to the working state, the specific steps are as follows:

[0060] Start the motor 302 to rotate in the reverse direction. The motor 302 drives the lead screw 3051 to rotate. While the lead screw 3051 rotates, the rotation of the nut 3052 is restricted. Then the nut 3052 moves along the cylinder block 304, driving the piston rod 307 to contract axially. The locking pin 301 is pulled out from the retraction locking hole 501 of the retraction 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 completely retracted, the motor 302 stops working. Subsequently, the deployment and retraction driver of the antenna drives the umbrella surface reflector 1 to deploy. After the umbrella surface reflector 1 is completely deployed, start the motor 302 to rotate in the forward direction. The motor 302 drives the lead screw to rotate the lead screw 3051. While the lead screw 3051 rotates, the rotation of the nut 3052 is restricted. Then the nut 3052 moves along the cylinder block 304, driving the piston rod 307 to extend axially. After the locking pin 301 is inserted into the deployment locking hole 401 of the deployment locking seat 4, the forward limit switch 308 senses its position. After reaching the predetermined locking position, the motor 302 stops working.

[0061] Locking process in the retracted state of the umbrella-shaped antenna:

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

[0063] The starting motor 302 rotates in the reverse direction, and the motor 302 drives the lead screw 3051 to rotate. While the lead screw 3051 rotates, the rotation of the nut 3052 is restricted, so the nut 3052 moves along the cylinder block 304, driving the piston rod 307 to contract axially. The locking pin 301 is pulled out from the deployment locking hole 401 of the deployment 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 completely retracted, the motor 302 stops working. Subsequently, the antenna deployment and retraction driver drives the umbrella surface reflector 1 to retract. After the umbrella surface reflector 1 is completely retracted, the motor 302 is started to rotate in the forward direction, and the motor 302 drives the lead screw to rotate the lead screw 3051. While the lead screw 3051 rotates, the rotation of the nut 3052 is restricted, so the nut 3052 moves along the cylinder block 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] In a second aspect, the present application also provides an umbrella-shaped antenna. The umbrella-shaped antenna includes an umbrella surface reflector 1, which has a deployed state in the shape of an umbrella surface and a rotational retracted state that is left-handed or right-handed. The umbrella surface reflector 1 uses the above-described locking device for the deployment and retraction of the umbrella-shaped antenna to maintain the deployed state or the rotational retracted state. For the beneficial effects of the umbrella-shaped antenna, refer to the beneficial effects of the above-described locking device for the deployment and retraction of the umbrella-shaped antenna, and details are not repeated here.

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

[0066] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure does not separately describe various possible combination methods.

[0067] In addition, any combination can be made between various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A locking device for unfolding and retracting an umbrella-shaped antenna, the umbrella-shaped antenna comprising an umbrella reflector (1) and a central body (2) located at the center of the umbrella reflector (1), the umbrella reflector (1) comprising a plurality of hard panel units (101) uniformly distributed along the circumference of the central body (2), the umbrella reflector (1) having an unfolded state in the shape of an umbrella, and a left-handed or right-handed rotational folded state, characterized in that: The locking device comprises: A locker (3) is fixedly connected to the outer surface of the panel unit (101), and its installation position corresponds to the rear end of the panel unit (101) in the rotation and folding direction of the umbrella reflector (1); the locker (3) has a locking pin (301); An unfolding locking seat (4) is fixedly connected to a surface of the panel unit (101) away from the central body (2), and its installation position corresponds to the head end of the panel unit (101) in the rotation and folding direction of the umbrella reflector (1); the unfolding locking seat (4) has an unfolding locking hole (401); A folding locking seat (5) fixedly connected to the outer surface of the panel unit (101) away from the central body (2), the folding locking seat (5) having a folding 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) maintains the unfolded state; When the umbrella reflector (1) is folded, the locking pin (301) on each panel unit (101) is inserted into the folding locking hole (501) of the circumferentially adjacent panel unit (101) so that the umbrella reflector (1) maintains the rotationally folded state.

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

3. The locking device for deploying and retracting an umbrella-shaped antenna according to claim 1, characterized in that: The folding and locking seat (5) comprises a second fixing plate (502) and a second cylinder (503), a second connecting plate (504) is arranged 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 arranged 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, and the inner hole of the second cylinder (503) is the folding and locking hole (501).

4. The locking device for deploying and retracting an umbrella-shaped antenna according to claim 1, characterized in that: Each panel unit (101) is configured with two lockers (3), and the two lockers (3) are arranged along the radial direction of the panel unit (101); Each of the panel units (101) is configured with two unfolding locking seats (4), the two unfolding locking seats (4) are arranged along the radial direction of the panel unit (101), and each of the lockers (3) corresponds to one of the unfolding locking seats (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 far from the central body (2); Each of the panel units (101) is provided with a folded locking seat (5), and the distance between the folded locking seat (5) and the proximal end is equal to the distance between any one of the two unfolded 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 locker (3) is an electric cylinder, which comprises a motor (302), a reducer (303), a cylinder body (304), a screw nut mechanism (305), a stop 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 screw nut mechanism (305) comprises a screw (3051) and a nut (306). The nut (3052) is provided with a stop groove on the outer surface of the nut (3052); 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 arranged in the cylinder body (304), the stop plate (306) is fixedly connected to the inner surface of the cylinder body (304), and the outer surface of the nut (3052) is provided with a stop groove, and the stop plate (306) is inserted into the stop groove.

7. 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 further comprises a controller, and the electric cylinder further comprises a forward limit switch (308) and a return limit switch (309), both of which are electrically connected to the controller, the forward limit switch (308) being connected to the front end of the cylinder body (304) and being used to control the extension position of the piston rod (307), and the return limit switch (309) being connected to the rear end of the cylinder body (304) and being used to control the retraction position of the piston rod (307).

8. The locking device for deploying and retracting an umbrella-shaped antenna according to claim 2, characterized in that: A first guiding slope (405) is provided on the inner wall of one end of the first cylinder (404) facing the locker (3), and the first guiding slope (405) is used to guide the locking pin (301) to be inserted into the unfolding locking hole (401).

9. The locking device for deploying and retracting an umbrella-shaped antenna according to claim 3, characterized in that: A second guiding slope (506) is provided on the inner wall of one end of the second cylinder (503) facing the locker (3), and the second guiding slope (506) is used to guide the locking pin (301) to be inserted into the retracted locking hole (501).

10. An umbrella-shaped antenna, characterized in that: The umbrella antenna comprises an umbrella reflector (1), which has an unfolded state in the shape of an umbrella, and a rotated folded state in a left-handed or right-handed manner. The umbrella reflector (1) uses a locking device for unfolding and folding an umbrella antenna as described in any one of claims 1 to 9 to maintain the unfolded state or the rotated folded state.

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