CN112909489B - Log-periodic antenna with foldable structure - Google Patents

Abstract

The invention discloses a log periodic antenna with a foldable structure, which comprises at least one pair of beams, an array, a positioning assembly and a support frame, wherein the positioning assembly is fixed on the beams and can rotate along the positioning assembly, the array is vertically arranged with the beams when in a first position and is parallel to the beams when in a second position, the support frame is rotationally connected with the beams, and two beams in the pair of beams are rotationally connected through the rotating assembly. The invention has the advantages that the cross beam can be folded by 180 degrees and stored for convenient carrying and transportation when leaving a factory, the cross beam only needs to be unfolded to a required position when the antenna is used, the vibrator and the cross beam adopt a rotatable positioning mode, the vibrator only needs to be rotated by 90 degrees and folded when in transportation, the vibrator only needs to be rotated by 90 degrees and unfolded when in use, the cross beam and the tripod can be rotated and folded together, the structure is convenient to mount, the size is small when the vibrator and the tripod are disassembled and stored, and the transportation is convenient.

Description

Log-periodic antenna with foldable structure

Technical Field

The invention relates to the technical field of antenna structures, in particular to a log periodic antenna with a foldable structure.

Background

Log periodic antennas are one type of directional plate antennas commonly used for indoor distribution and elevator signal coverage. The conventional logarithmic period antenna has the characteristics of inconvenient installation, large volume and inconvenient collection, carrying and transportation. Publication No.: CN206546873U, patent name: the foldable log periodic antenna comprises at least one pair of main beams and a plurality of vibrators, wherein the vibrators are hinged to the main beams, and a positioning device is arranged between the vibrators and the main beams, so that the vibrators can be rotated to be intersected with the main beams when leaving a factory and are close to the main beams as much as possible, and the occupied space of the log periodic antenna is reduced. However, this solution has two problems:

(1) When the array is folded and rotated, the array is only hinged with the main beam through the rivet, so that a gap is formed between the array and the arc groove clamping seat, the array is difficult to position after being folded, different arrays are inclined in the transportation process, the risk of damaging the array is caused, and the possibility of rotating along the positioning component when the array is interfered in the use process;

(2) Although the array can be folded in this scheme, whole antenna area still is big, inconvenient transportation.

Disclosure of Invention

The invention aims to solve the problems and designs a log periodic antenna with a foldable structure, which comprises the foldable structure, at least one pair of beams, and a rotating assembly, wherein two beams in the pair of beams are rotatably connected through the rotating assembly; the rotating assembly is a damping hinge, the damping hinge enables the angle between two connected cross beams to be adjusted, and the rotating angle between the two cross beams connected with the damping hinge is-DEG;

the foldable structure comprises an array and a positioning assembly, the positioning assembly is fixed on the beam, the array can rotate along the positioning assembly, the array is vertically arranged with the beam when in a first position, and the array is arranged parallel to the beam when in a second position;

the positioning assembly comprises a positioning seat, a first arc-shaped groove and a second arc-shaped groove which are perpendicular to each other are arranged on the positioning seat, and the first arc-shaped groove is arranged along the direction perpendicular to the cross beam;

the array is provided with a step of stepping down, a through hole is formed in the positioning seat, the connecting rod piece sequentially penetrates through the step of stepping down and the positioning seat, an anti-loosening connecting piece is arranged at one end of the connecting rod piece, an elastic piece is sleeved on the connecting rod piece, and the elastic piece is accommodated in the through hole.

Further, the through hole includes a first communication hole and a second communication hole having a larger diameter than the first communication hole, the first communication hole communicates with the second communication hole, and the elastic member is received inside the second communication hole.

Furthermore, the damping hinge comprises a first hinge, a second hinge, a rotating shaft, a torsion spring and a limiting assembly, wherein the torsion spring is sleeved outside the rotating shaft;

the limiting component is arranged along the circumference of the rotating shaft and fixedly connected with the rotating shaft, and the connecting end of the second hinge is provided with a limiting hole matched with the limiting component.

Further, the limiting assembly comprises a positioning block, a sleeve and a first spring; the positioning block is located outside the rotating shaft when the first spring is extended, and the positioning block is accommodated inside the rotating shaft when the first spring is compressed.

Furthermore, the device also comprises a support frame, and the support frame is rotationally connected with the cross beam; the support frame comprises a tripod and a tripod head arranged on the tripod, and the tripod head is rotationally connected with one of the cross beams.

Further, the holder comprises a ball head seat, a ball head, a screwing nut and a holder connecting piece;

the ball head is fixedly connected with the holder connecting piece, the ball head rotates in the ball head seat, a first yielding groove is formed in the side wall of the ball head seat, and a locking mechanism is arranged outside the ball head seat.

Furthermore, locking mechanism includes the second spring, the second spring is fixed at the bulb seat outer wall, the second spring is fixed with the latch segment, the bulb seat overcoat is equipped with the lock sleeve, be provided with the locking groove on the lock sleeve, be equipped with on the lock sleeve with first groove assorted second groove of stepping down.

The log periodic antenna with the foldable structure manufactured by the technical scheme of the invention has the following beneficial effects:

(1) The positioning assembly is arranged on the cross beam, and the array is kept in a position vertical to the cross beam when in use; when the array is not used for collection, the array keeps a position parallel to the beam, and the storage space is reduced by adopting the mode, so that the array is convenient to carry;

(2) The positioning assembly comprises a positioning seat, a connecting rod piece, an elastic piece and an anti-loosening connecting piece, when the array is required to be folded, the connecting rod piece is lifted, the elastic piece is compressed, a gap is formed between a nut of the connecting rod piece and the positioning seat, the array can be rotated by stirring the array, after the rotation is completed, the connecting rod piece is loosened, and the positioning seat is tightly contacted with the array by the elastic piece, so that the array can not rotate with the positioning seat under the condition of interference, and the use is not influenced; in the transportation process, the array is tightly contacted with the positioning seat, so that the array cannot be inclined;

(3) The first arc-shaped groove and the second arc-shaped groove are arranged on the fixed seat to further position the array, so that the array can accurately rotate by 90 degrees;

(4) Rotate through the damping hinge between two crossbeams and connect, can carry out the regulation of a plurality of angles between two crossbeams for the angle between two crossbeams can be adjusted as required.

Drawings

FIG. 1 is a schematic diagram of the connection of the positioning assembly and the array of the present invention;

FIG. 2 is an exploded view of the positioning assembly and the array of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view of the present invention taken along line A-A of FIG. 1;

FIG. 4 is a schematic view of the internal structure of the anti-loosening connector of the present invention;

FIG. 5 is a schematic diagram of the unfolded state structure of the log periodic antenna of the present invention;

FIG. 6 is a schematic diagram of a folded configuration of the log periodic antenna of the present invention;

FIG. 7 is an exploded view of the damped hinge of the present invention;

FIG. 8 is a schematic view of the construction of the stop assembly of the present invention taken along the direction B in FIG. 7;

FIG. 9 is a schematic view of the stand of the present invention;

FIG. 10 is a schematic view of the connection between the ball socket and the locking sleeve according to the present invention;

in the figure, 1, a cross beam; 2. an array; 3. a positioning assembly; 4. a support frame; 5. a rotating assembly; 6. positioning seats; 7. a fixing plate; 8. a fixed seat; 9. a first arc-shaped slot; 10. a second arc-shaped slot; 11. a abdicating step; 12. a through hole; 13. connecting rod pieces; 14. an anti-loosening connecting piece; 15. an elastic member; 16. a first communication hole; 17. a second communication hole; 18. a first hinge; 19. a second hinge; 20. a rotating shaft; 21. a torsion spring; 22. a limiting component; 23. a limiting hole; 24. positioning blocks; 25. a sleeve; 26. a first spring; 27. a nut body; 28. a snap ring; 29. an elastic washer; 30. a tripod; 31. a holder; 32. a ball cup seat; 33. a ball head; 34. screwing the nut; 35. a holder connecting piece; 36. accommodating a tank; 37. a first abdicating groove; 38. a locking mechanism; 39. a second spring; 40. a locking block; 41. a locking sleeve; 42. a locking groove; 43. and a second abdicating groove.

Detailed Description

The first embodiment is as follows:

for a better understanding of the present invention, the present invention will be further described with reference to the following embodiments and the accompanying drawings, in which fig. 1 and 5 show a log periodic antenna having a foldable structure. Including beta structure, at least a pair of crossbeam 1, array 2, locating component 3 fixes on the crossbeam 1, array 2 can be followed locating component 3 rotates, array 2 when the primary importance with 1 perpendicular setting of crossbeam, array 2 when the second place with 1 parallel arrangement of crossbeam, a pair of crossbeam 1 realize rotatoryly through runner assembly 5, and array 2 can realize folding through being connected with locating component 3's rotation, only need fold the rotatory 90 degrees of oscillator when the transportation, only need rotate when the use open 90 degrees can, promptly: when in use, the array 2 is kept at a position vertical to the beam 1; when not using to collect, position that the array 2 keeps being parallel to crossbeam 1 has adopted this kind of mode to reduce the space of storing, conveniently carries.

As shown in fig. 1, 2, 3 and 5, the positioning assembly 3 includes a positioning seat 6, the positioning seat 6 includes a fixing plate 7 fixedly connected to the beam 1 and parallel to the beam 1, a fixing seat 8 is integrally formed with the fixing plate 7, a first arc-shaped groove 9 for accommodating the array 2 is formed in one end surface of the fixing seat 8, and the first arc-shaped groove 9 penetrates through the whole fixing seat 8 and is arranged along a direction perpendicular to the beam 1. Two opposite end surfaces of the fixed seat 8 are provided with second arc-shaped grooves 10 for positioning the array 2, and the second arc-shaped grooves 10 are arranged along a direction parallel to the beam 1. The fixing plate 7 is fixed to the cross beam 1 by bolts. When the lattice is delivered from a factory or stored and transported, the lattice 2 is accommodated in the second arc-shaped groove 10; in use, the array 2 is received in the first arcuate slot 9. Second arc wall 10 sets up the terminal surface at relative two for two directions can be followed to array 2 and rotated, and second arc wall 10 plays spacing effect, makes in the transportation, and array 2 can not deviate from and damage from second arc wall 10.

As shown in fig. 1-3, the array 2 is provided with a step 11 of stepping down, a through hole 12 has been seted up on the fixing base 8, a connection rod piece 13 passes through the through hole 12 passes in proper order the step 11 of stepping down with the fixing base 8, a connection rod piece 13 one end is provided with an anti-loosening connecting piece 14, an elastic piece 15 is provided with to the cover on the connection rod piece 13, the elastic piece 15 holds inside the through hole 12. The through hole 12 includes a first communication hole 16 and a second communication hole 17, the second communication hole 17 has a larger diameter than the first communication hole 16, the first communication hole 16 communicates with the second communication hole 17, and the elastic member 15 is received inside the second communication hole 17. The connecting rod piece 13 is a screw, a nut is arranged at one end of the screw, threads are arranged at the other end of the screw, and one end provided with the threads is in threaded connection with the anti-loosening connecting piece 14. The elastic member 15 is a spring. The first communication hole 16 and the second communication hole 17 are formed with positioning steps due to different diameters. When needs use, to lifting connection member 13, elastic component 15 receives the compression and by location step limit position, the nut with step 11 separation of stepping down, at this moment, stir array 2 gently and make it rotate 90 degrees and get into first arc wall 9, array 2 gets into the user state promptly, at this moment, unclamp connection member 13, the spring becomes the diastole state by compression state, connection member 13 compresses tightly once more on step 11 of stepping down. The elastic piece 15 is matched with the second arc-shaped groove 10, so that the array 2 is not easy to disengage in a folded state and is easier to open. It is worth mentioning that a gasket is arranged on one side of the nut, which is in contact with the array, and a gasket is arranged on one side of the fixed seat, which is in contact with the loosening nut.

As shown in fig. 4, the anti-loose connecting element 14 is preferably an anti-loose nut, and includes a nut body 27, a stop ring 28, and an elastic washer 29, wherein the nut body 27 has an internal thread, and the elastic washer 29 and the stop ring 28 are sequentially mounted inside the nut body 27. The stop ring 28 is made of plastic material, the inner diameter of the stop ring 28 is matched with the inner diameter of the nut body 27, and the elastic washer 29 is in contact with the stop ring 28. When the connecting rod 13 is screwed into the anti-loosening connecting piece 14, the connecting rod 13 is threaded to cut and tap the stop ring 28, an elastically compressible space is formed between the stop ring 28 and the elastic washer 29, and when the stop ring 28 is in contact with the threads of the connecting rod 13, the connecting rod 13 is axially extruded along with the stop ring 28, so that the stop ring 28 and the elastic washer 29 are mutually extruded.

Example two:

a log periodic antenna with a foldable structure comprises the scheme in the first embodiment and further comprises a rotating assembly, and as shown in fig. 5, two beams 1 in a pair of beams 1 are rotatably connected through the rotating assembly 5. This embodiment comprises at least one pair of foldable beams 1 and several foldable vibrators. As shown in fig. 6, when shipping, two cross beams 1 of a pair of cross beams 1 are folded in half to be folded, and when necessary, the two cross beams 1 are unfolded.

As shown in fig. 5 and 6, the beam 1 is formed by fixedly connecting two hollow square tubes with the end sockets through a connecting piece, and a feeder line penetrates through the hollow cavity of each square tube to collect and transmit signals.

As shown in fig. 5 to 7, the rotating assembly 5 is a damped hinge which adjusts the angle between two connected crossbeams 1 and the angle of rotation between two connected crossbeams 1 is 0 to 180 degrees. Adopt the damping hinge not only to make and fold between the crossbeam 1, simultaneously, in the in-process that uses the antenna, carry out a plurality of angles between two crossbeams 1 according to actual need and stop, can realize that the angle between two crossbeams 1 is 170 degrees, 160 degrees, 150 degrees etc..

As shown in fig. 7, the damping hinge includes a first hinge 18, a second hinge 19, a rotating shaft 20, a torsion spring 21, and a limiting component 22, the first hinge 18 and the second hinge 19 are rotatably connected through the rotating shaft 20, the torsion spring 21 is sleeved on the outer side of the rotating shaft 20, the limiting component 22 is fixedly connected with the rotating shaft 20, the limiting component 22 is arranged along the circumference of the rotating shaft 20, and the connecting end of the second hinge 19 is provided with a limiting hole 23 matched with the limiting component 22. When two crossbeams 1 rotate, because first hinge 18 and second hinge 19 are fixed respectively on different crossbeam 1, rotate through pivot 20 and torsional spring 21 between first hinge 18 and the second hinge 19 and be connected, during the use, produce relative rotation between first hinge 18 and the second hinge 19, torsional spring 21 twists reverse and then deposit elastic potential energy, and setting up of torsional spring 21 makes and cushions between first hinge 18 and the second hinge 19, folding that can be slow. In some possible embodiments, the stop assembly 22 cooperates with the stop hole 23 to keep the two beams 1 stopped at a plurality of angles, thereby facilitating the reception of signals. Two groups of limiting assemblies 22 are symmetrically arranged along the rotating shaft 20, and a torsion spring 21 is arranged between the two groups of limiting assemblies 22. Meanwhile, two limiting holes 23 are correspondingly arranged on the second hinge 19.

As shown in fig. 7 to 8, the limiting assembly 22 includes a positioning block 24, a sleeve 25 and a first spring 26, the sleeve 25 is fixed inside the rotating shaft 20, the first spring 26 is fixed inside the sleeve 25, the positioning block 24 is fixedly connected with the first spring 26, the positioning block 24 is located outside the rotating shaft 20 when the first spring 26 is extended, and the positioning block 24 is accommodated inside the rotating shaft 20 when the first spring 26 is compressed. Positioning block 24 is spherical. When the first hinge 18 and the second hinge 19 rotate relatively, the limiting hole 23 is gradually close to the limiting component 22, the second hinge 19 presses the positioning block 24, the first spring 26 is compressed until the positioning block 24 enters the limiting hole 23, the opening angle of the damping hinge is further fixed, and when the second hinge 19 further rotates under the action of external force, the positioning block 24 retracts into the sleeve 25. According to the principle, the opening angle between the first hinge 18 and the second hinge 19 can be changed due to the plurality of limiting assemblies 22. And then can be according to actual need with the angle adjustment between the crossbeam 1.

Example three:

further, different from the second embodiment, the log periodic antenna with the foldable structure further comprises a support frame 4, and the support frame 4 is rotatably connected with the beam 1. The embodiment comprises at least one pair of foldable beams 1 and a plurality of foldable vibrators, and a foldable support frame 4. When leaving a factory, two cross beams 1 in a pair of cross beams 1 are folded in half to realize folding, and when the folding type folding machine needs to be used, the two cross beams 1 are unfolded. The cross beam 1 and the support frame 4 can be rotatably folded together. The storage space is further reduced.

As shown in fig. 5 and 6, the beam 1 is fixedly connected with the end enclosure through a connecting piece by two hollow square tubes, and a feeder line penetrates through the hollow cavity of the square tube to collect and transmit signals.

As shown in fig. 9, the support frame 4 includes a tripod 30 and a pan/tilt head 31 disposed on the tripod 30, and the pan/tilt head 31 is rotatably connected to one of the beams 1. The tripod head 31 includes a ball head seat 32, a ball head 33, a screw nut 34 and a tripod head connecting piece 35, the ball head seat 32 is fixed on the tripod 30, an accommodating groove 36 for accommodating the ball head 33 is arranged in the ball head seat 32, the ball head 33 is accommodated in the accommodating groove 36, the ball head 33 is fixedly connected with the tripod head connecting piece 35, the ball head 33 rotates in the ball head seat 32, a first yielding groove 37 is arranged on the side wall of the ball head seat 32, and a locking mechanism 38 is arranged outside the ball head seat 32. When the tripod leaves a factory, the rod part of the ball head 33 connected with the tripod head connecting piece 35 is accommodated in the first abdicating groove 37, and the tripod 30 is close to the beam 1, so that the storage space is reduced. During the use, the rod part that bulb 33 and cloud platform connecting piece 35 are connected is deviate from first groove 37 of stepping down manually, and bulb 33 sets up in bulb seat 32, and bulb 33 rotates and to adjust the inclination of crossbeam 1 and guarantee array 2 to the needs of different working angle.

As shown in fig. 10, the locking mechanism 38 includes a second spring 39, the second spring 39 is fixed on the outer wall of the ball seat 32, the second spring 39 is fixed with a locking block 40, a locking sleeve 41 is sleeved on the ball seat 32, the locking block 40 and one end of the locking sleeve 41 close to each other are in an arc shape with the same radian as that of the locking sleeve 41, a locking groove 42 is provided on the locking sleeve 41, and a second abdicating groove 43 matched with the first abdicating groove 37 is provided on the locking sleeve 41. In order to prevent the ball head 33 from being disengaged from the first recess 37 during the rotation of the ball head seat 32, a locking mechanism 38 is provided outside the ball head seat 32. When leaving the factory, the locking sleeve 41 covers the first relief groove 37, and at this time, the second spring 39 is expanded while the locking block 40 is located outside the locking sleeve 41. When the locking device is used, firstly, the locking block 40 is pressed to compress the second spring 39 until the locking block 40 enters the locking sleeve 41, the locking sleeve 41 is rotated, and the positions of the second abdicating groove 43 and the first abdicating groove 37 are overlapped; the position of the ball head 33 is adjusted to a working state; the locking sleeve 41 is rotated again to make the locking block 40 pass through the locking sleeve 41, and at the same time, the locking sleeve 41 covers the first receding groove 37. A locking mechanism 38 composed of a second spring 39, a locking sleeve 41 and a locking block 40 is provided, so that the ball head 33 cannot be separated from the ball head seat 32 when the angle of the ball head 33 is adjusted during the use of the antenna. When in use, the second avoiding groove 43 on the locking sleeve 41 and the first avoiding groove 37 are staggered; when the folding is performed, the first and second relief grooves 37 and 43 overlap each other, and the folding can be performed. By adopting the structure, the floor space during storage and transportation is reduced, and the effect is good in the using process.

As shown in fig. 9, the tripod 30 includes a hinged frame and three legs, each of which is pivotally connected to the hinged frame. The three legs of the tripod 30 may be pivotally connected and may be folded and unfolded as required.

The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.

Claims (7)

1. The log periodic antenna with the foldable structure is characterized by comprising the foldable structure, at least one pair of beams (1), wherein two beams (1) in the pair of beams (1) are rotatably connected through a rotating assembly (5);

the rotating assembly (5) is a damping hinge, the damping hinge enables the angle between two connected cross beams (1) to be adjusted, and the rotating angle between the two connected cross beams (1) of the damping hinge is 0-180 degrees;

the foldable structure comprises an array (2) and a positioning component (3), the positioning component (3) is fixed on the beam (1), the array (2) can rotate along the positioning component (3), the array (2) is perpendicular to the beam (1) in a first position, and the array (2) is parallel to the beam (1) in a second position;

the positioning assembly (3) comprises a positioning seat (6), a first arc-shaped groove (9) and a second arc-shaped groove (10) which are perpendicular to each other are arranged on the positioning seat (6), and the first arc-shaped groove (9) is arranged along the direction perpendicular to the cross beam (1);

the array (2) is provided with step of stepping down (11), through hole (12) have been seted up on positioning seat (6), and connecting rod piece (13) pass in proper order step of stepping down (11) with positioning seat (6), connecting rod piece (13) one end is provided with locking connecting piece (14) that takes off, the cover is equipped with elastic component (15) on connecting rod piece (13), elastic component (15) hold inside through hole (12).

2. A log periodic antenna with a foldable structure according to claim 1, wherein the through hole (12) comprises a first communication hole (16) and a second communication hole (17), the second communication hole (17) has a larger diameter than the first communication hole (16), the first communication hole (16) communicates with the second communication hole (17), and the elastic member (15) is accommodated inside the second communication hole (17).

3. The log periodic antenna with the foldable structure as claimed in claim 2, wherein the damping hinge comprises a first hinge (18), a second hinge (19), a rotating shaft (20), a torsion spring (21) and a limiting component (22), and the torsion spring (21) is sleeved on the outer side of the rotating shaft (20);

the limiting assembly (22) is arranged along the circumference of the rotating shaft (20) and fixedly connected with the rotating shaft (20), and the connecting end of the second hinge (19) is provided with a limiting hole (23) matched with the limiting assembly (22).

4. The log periodic antenna with the foldable structure as claimed in claim 3, wherein the position limiting component (22) comprises a positioning block (24), a sleeve (25) and a first spring (26); the positioning block (24) is located outside the rotating shaft (20) when the first spring (26) is extended, and the positioning block (24) is accommodated inside the rotating shaft (20) when the first spring (26) is compressed.

5. The log periodic antenna with the foldable structure as claimed in any one of claims 1 to 4, further comprising a support frame (4), wherein the support frame (4) is rotatably connected with the beam (1); the supporting frame (4) comprises a tripod (30) and a tripod head (31) arranged on the tripod (30), and the tripod head (31) is rotationally connected with one of the cross beams (1).

6. A log periodic antenna with a foldable structure according to claim 5, characterized in that the pan-tilt (31) comprises a ball socket (32), a ball (33), a screw nut (34) and a pan-tilt connector (35);

bulb (33) and cloud platform connecting piece (35) fixed connection, bulb (33) are in bulb seat (32) internal rotation, bulb seat (32) lateral wall is equipped with first groove of stepping down (37), bulb seat (32) are provided with locking mechanism (38) outward.

7. The log periodic antenna with the foldable structure as claimed in claim 6, wherein the locking mechanism (38) comprises a second spring (39), the second spring (39) is fixed on the outer wall of the ball seat (32), the locking block (40) is fixed on the second spring (39), a locking sleeve (41) is sleeved outside the ball seat (32), a locking groove (42) is formed in the locking sleeve (41), and a second abdicating groove (43) matched with the first abdicating groove (37) is formed in the locking sleeve (41).

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