Small whip antenna synchronous unfolding mechanism with controllable unfolding time

Abstract

The invention provides a small whip antenna synchronous unfolding mechanism with controllable unfolding time, and mainly solves the problem that the occupied space of an antenna on a small unmanned aerial vehicle is large, and the scheme of the small whip antenna synchronous unfolding mechanism with controllable unfolding time is as follows: the antennas needing to be synchronously unfolded are arranged on a rotating shaft in series; a pin puller is adopted to restrain the rotating shaft at the folding position; when the antenna is unfolded, the pin puller relieves the constraint on the rotating shaft, and the rotating shaft drives the antenna to rotate to an unfolding position under the driving of the torsion spring; after the antenna is unfolded in place, the limiting pin extends out under the driving of the pressure spring to lock the antenna; the antenna unfolding mechanism has the outstanding advantages that the antenna unfolding time is controllable, the synchronism is good, and the space size occupied by the unfolding mechanism is small.

Description

Technical Field

[0001] The invention belongs to the technical field of unmanned aerial vehicles, and mainly relates to a small whip antenna synchronous unfolding mechanism. Background Art

[0002] The whip antenna is a common structural form of shortwave antenna, which is mostly rod-shaped and its length is generally about one-quarter of the working wavelength. The whip antenna has the characteristics of simple structure, small size, and omnidirectionality, and is widely used in radio stations, drones and other fields. In order to meet the needs of packaging, storage, transportation and the like, it is usually necessary to disassemble or fold the antenna for easy transportation. The antenna needs to be reinstalled when in use, which is inefficient; and the antenna is large after installation and cannot meet the application requirements of small tube-launched drones. In order to reduce the volume of the antenna after installation and enable automatic deployment, the present invention takes the folding and controllable deployment of the whip antenna as the application background, and designs a whip antenna deployment mechanism that can be manually folded and has controllable deployment timing. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art and solve the problems of low installation efficiency and large size of small tube-launched UAV antennas, the present invention provides a synchronous deployment mechanism for a small whip antenna with controllable deployment timing.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A synchronous unfolding mechanism of a small whip antenna with controllable unfolding timing, comprising a rotating shaft portion, a driving portion, a connecting portion and a fixing portion; the rotating shaft portion and the driving portion are arranged on the fixing portion; after receiving the unfolding instruction, the driving portion drives the rotating shaft portion to rotate, and the rotating shaft portion drives the connecting portion to rotate to complete the unfolding action; the fixing portion comprises an antenna base 7; the antenna base 7 is a rectangular plate; a first supporting column and a second supporting column are arranged on the top surface of the antenna base 7; the first supporting column and the second supporting column are respectively located at positions close to the short side of the top surface of the antenna base 7; the first supporting column and the second supporting column are provided with coaxial through holes; the rotating shaft portion comprises a rotating shaft 103, a torsion spring 10 and a toggle piece 106; the two ends of the rotating shaft 103 are respectively arranged in the through holes of the first supporting column and the second supporting column; the torsion spring 10 is nested on the outer surface of the rotating shaft 103; a toggle piece 106 is arranged on the rotating shaft 103; the toggle piece 106 comprises a toggle piece fixing seat and a support ear; the toggle piece fixing seat is a hollow cylinder ... The baffle plate fixing seat is nested on the rotating shaft 103; the baffle plate fixing seat is fixedly connected to the rotating shaft 103; the outer wall of the baffle plate fixing seat is provided with radial ears; the ears are provided with ear through holes; one end of the torsion spring 10 is fixedly connected to the antenna base 7; the other end of the torsion spring 10 is fixedly connected to the rotating shaft 103; the driving part includes a pin puller 5 and a pin puller seat 4; the pin puller seat 4 is provided on the top surface of the first support column and the second support column; the pin puller 5 is provided on the pin puller seat 4; the pin puller seat 4 is a rectangular thin plate; a long strip through hole is set on the pin puller seat 4; the pin puller 5 is fixed on the pin puller seat 4 through a wire clip 6; the pin of the pin puller 5 is inserted into the ear through hole; the connecting part includes an antenna seat; the antenna seat includes a first adapter seat 101 and a second adapter seat 105; the first adapter seat 101 and the second adapter seat 105 are respectively set at both ends of the rotating shaft 103; the first adapter seat 101 and the second adapter seat 105 are respectively fixedly connected to the first antenna 2 and the second antenna 8.

[0006] The antenna seat is an L-shaped corner plate.

[0007] The pin puller 5 is a pyrotechnic pin puller.

[0008] A locking pin hole 14 is set on the surface where the first adapter 101 is fixed to the rotating shaft 103; a blind hole is set on the side of the first support column where the first adapter 101 is located; a locking pin spring and a locking pin 13 are set in the blind hole; the side where the blind hole is located is opposite to the surface where the locking pin hole 14 is set.

[0009] The beneficial effects of the present invention are: due to the adoption of a foldable design, the antennas of the antenna deployment mechanism are arranged in series, and the deployment synchronization is good; the overall size of the deployment mechanism is small, and it is particularly suitable for the deployment of antennas under conditions of limited space and can meet the needs of small tube-launched UAVs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Schematic diagram of the unfolding mechanism; (a) is the unfolding state diagram; (b) is the folded state diagram;

[0011] Figure 2 is a schematic diagram of the locking state of the deployment mechanism;

[0012] Figure 3 is a schematic diagram of the rotation axis of the unfolding mechanism;

[0013] Figure 4 is a schematic diagram of the antenna folded state of the deployment mechanism;

[0014] Figure 5 is a schematic diagram of the antenna deployment state of the deployment mechanism;

[0015] Among them, 101-first adapter; 102-top screw; 103-rotating shaft; 104-screw; 105-second adapter; 106-blocking piece; 2-first antenna; 3-pin puller seat screw; 4-pin puller seat; 5-pin puller; 6-clip; 7-antenna base; 8-second antenna; 9-clip screw; 10-torsion spring; 11-wire clamp screw; 12-wire clamp; 13-locking pin; 14-pin hole; 15-housing. DETAILED DESCRIPTION

[0016] The scheme adopted by the present invention is:

[0017] A small whip antenna synchronous deployment mechanism with controllable deployment timing comprises a rotating shaft, a driving part, a connecting part and a fixing part; the rotating shaft and the driving part are arranged on the fixing part; after receiving a deployment instruction, the driving part drives the rotating shaft to rotate, and the rotating shaft drives the connecting part to rotate, thereby completing the deployment action;

[0018] The fixing part includes an antenna base 7; the antenna base 7 is a rectangular plate; a first support column and a second support column are arranged on the top surface of the antenna base 7; the first support column and the second support column are respectively located at positions close to the short side of the top surface of the antenna base 7; the first support column and the second support column are arranged with coaxial through holes;

[0019] The rotating shaft portion includes a rotating shaft 103, a torsion spring 10, and a shifting piece 106; the two ends of the rotating shaft 103 are respectively arranged in the through holes of the first supporting column and the second supporting column; the torsion spring 10 is nested and arranged on the outer surface of the rotating shaft 103; the shifting piece 106 is arranged on the rotating shaft 103; the shifting piece 106 includes a shifting piece fixing seat and a lug; the shifting piece fixing seat is a hollow cylinder; the shifting piece fixing seat is nested and arranged on the rotating shaft 103; the shifting piece fixing seat is fixedly connected to the rotating shaft 103; the outer wall of the shifting piece fixing seat is provided with a radial lug; the lug through hole is provided on the lug; one end of the torsion spring 10 is fixedly connected to the antenna base 7; the other end of the torsion spring 10 is fixedly connected to the rotating shaft 103;

[0020] The driving part includes a pin puller 5 and a pin puller seat 4; the pin puller seat 4 is arranged on the top surface of the first support column and the second support column; the pin puller seat 4 is a rectangular thin plate; a long strip through hole is arranged on the pin puller seat 4; the pin puller 5 is arranged on the pin puller seat 4; the pin puller 5 is a pyrotechnic pin puller; the pin puller 5 is fixed to the pin puller seat 4 by a wire clip 6; the pin of the pin puller 5 is inserted into the through hole of the support ear;

[0021] The connecting part includes an antenna seat; the antenna seat is an L-shaped corner plate; the antenna seat includes a first adapter seat 101 and a second adapter seat 105; the first adapter seat 101 and the second adapter seat 105 are respectively arranged at both ends of the rotating shaft 103; the first adapter seat 101 and the second adapter seat 105 are respectively fixedly connected to the first antenna 2 and the second antenna 8;

[0022] A locking pin hole 14 is provided on the surface where the first adapter 101 is fixed to the rotating shaft 103; a blind hole is provided on the side of the first support column where the first adapter is located; a locking pin spring and a locking pin 13 are provided in the blind hole; the side where the blind hole is located is opposite to the surface where the locking pin hole 14 is provided; when the antenna is deployed in place, the locking pin 13 is inserted into the locking hole 14 under the drive of the locking pin spring to lock the rotating shaft 103;

[0023] After receiving the control signal, the pin of the pin puller 5 is controlled to retract, the limit constraint of the torsion spring 10 is released, the torsion spring 10 drives the shaft 103 to rotate, and the shaft 103 drives the antenna adapter 102 to rotate, thereby unfolding the connected antenna.

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0025] Figure 1The invention provides a small whip antenna synchronous deployment mechanism with controllable deployment timing. The two sides of the antenna base 7 are cylindrical holes with a diameter of 6 mm, the first adapter 101 and the rotating shaft 103 are connected by M2 top screws, and the locking pin of the pin puller has a contraction stroke of 5 mm.

[0026] The assembly sequence of the antenna deployment mechanism is as follows:

[0027] (1) Mount the torsion spring 10 on the rotating shaft 103, and insert one end of the torsion spring 10 into the hole of the rotating shaft 3;

[0028] (2) Install the rotating shaft 103 into the antenna base 7, clamp the other end of the torsion spring 10 into the slot of the antenna base 7, and connect the second adapter 105 to the rotating shaft 103 with the screw 104;

[0029] (3) Insert the first adapter 101 from the other end of the antenna base 7, and connect the first adapter and the rotating shaft 103 with screws;

[0030] (4) Install the pin puller seat 3 on the antenna base 7 and fix it with screws 3;

[0031] (5) Rotate the rotating shaft 103 to the retracted state, insert the locking pin at the front end of the pin puller 5 into the pin hole of the rotating shaft 103, and fix the pin puller 5 on the pin puller seat 3 with the buckle 6;

[0032] (6) Install the first antenna 2 and the second antenna 8, and fix the RF cables of the antennas with the line card 12.

[0033] (7) Connect the cable of the pin puller.

[0034] Antenna deployment process:

[0035] (1) The control system gives a deployment signal, and the locking pin of the pin puller 5 retracts;

[0036] (2) The rotating shaft 103 rotates under the drive of the torsion spring 10, driving the antenna to unfold;

[0037] (3) When the antenna is fully deployed, the locking pin 13 is extended by the spring and inserted into the pin hole 14.

[0038] The special feature of the present invention is that the antennas of the antenna deployment mechanism are arranged in series, and the deployment synchronization is good; the overall size of the deployment mechanism is small, and it is particularly suitable for the deployment of antennas under limited space conditions.

[0039] Of course, other types of pin-pulling mechanisms can be used in specific implementations, and the number of antennas driven by the antenna deployment mechanism can be increased or decreased. Under the condition that the structural size is not limited, it can also be used to drive other types of antennas or parts to deploy.

Claims

1. A small whip antenna synchronous deployment mechanism with controllable deployment timing, characterized in that: The invention comprises a rotating shaft part, a driving part, a connecting part and a fixing part; the rotating shaft part and the driving part are arranged on the fixing part; after receiving the unfolding instruction, the driving part drives the rotating shaft part to rotate, and the rotating shaft part drives the connecting part to rotate to complete the unfolding action; the fixing part comprises an antenna base (7); the antenna base (7) is a rectangular plate; a first supporting column and a second supporting column are arranged on the top surface of the antenna base (7); the first supporting column and the second supporting column are respectively located at positions close to the short side of the top surface of the antenna base (7); the first supporting column and the second supporting column are provided with coaxial through holes; the rotating shaft part comprises a rotating shaft (103), a torsion spring (10) and a shifting piece (106); the two ends of the rotating shaft (103) are respectively arranged in the through holes of the first supporting column and the second supporting column; the torsion spring (10) is nested and arranged on the outer surface of the rotating shaft (103); a shifting piece (106) is arranged on the rotating shaft (103); the shifting piece (106) comprises a shifting piece The toggle piece fixing seat is a hollow cylinder; the toggle piece fixing seat is nested on the rotating shaft (103); the toggle piece fixing seat is fixedly connected to the rotating shaft (103); the outer wall of the toggle piece fixing seat is provided with radial ears; the ears are provided with ear through holes; one end of the torsion spring (10) is fixedly connected to the antenna base (7); the other end of the torsion spring (10) is fixedly connected to the rotating shaft (103); the driving part includes a pin puller (5) and a pin puller The pin puller seat (4) is provided on the top surface of the first support column and the second support column; the pin puller seat (4) is provided with a pin puller (5); the pin puller seat (4) is a rectangular thin plate; the pin puller seat (4) is provided with a long strip through hole; the pin puller (5) is fixed to the pin puller seat (4) through a wire clip 6; the pin of the pin puller (5) is inserted into the ear through hole; the connecting part includes an antenna seat; the antenna seat is respectively connected to the rotating shaft and the antenna.

2. The synchronous deployment mechanism of a small whip antenna with controllable deployment timing according to claim 1, characterized in that: A locking pin hole (14) is arranged on the surface where the first adapter seat (101) is fixed to the rotating shaft (103); a blind hole is arranged on the side of the first support column where the first adapter seat (101) is located; a locking pin spring and a locking pin (13) are arranged in the blind hole; and the side where the blind hole is located is opposite to the surface where the locking pin hole (14) is arranged.

3. The synchronous deployment mechanism of a small whip antenna with controllable deployment timing according to claim 1, characterized in that: The antenna seat is an L-shaped corner plate.

4. The synchronous deployment mechanism of a small whip antenna with controllable deployment timing according to claim 3, characterized in that: The antenna seat comprises a first adapter seat (101) and a second adapter seat (105); the first adapter seat (101) and the second adapter seat (105) are respectively arranged at two ends of the rotating shaft (103); the first adapter seat (101) and the second adapter seat (105) are respectively fixedly connected to the first antenna (2) and the second antenna (8).

5. The synchronous deployment mechanism of a small whip antenna with controllable deployment timing according to claim 1, characterized in that: The pin puller (5) is a pyrotechnic pin puller.

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