CN106785323B

CN106785323B - Antenna support

Info

Publication number: CN106785323B
Application number: CN201710001947.8A
Authority: CN
Inventors: 何李鹏; 杨德军
Original assignee: Phicomm Shanghai Co Ltd
Current assignee: Huzhou Yinglie Intellectual Property Operation Co ltd
Priority date: 2017-01-03
Filing date: 2017-01-03
Publication date: 2020-04-10
Anticipated expiration: 2037-01-03
Also published as: CN106785323A

Abstract

The invention discloses an antenna support, comprising: the antenna comprises a bottom plate, wherein a plurality of grooves for accommodating antennas are arranged on the upper surface of the bottom plate side by side; a fixing component is arranged on the side wall of the groove; the fixing component is used for fixing the antenna. The invention not only realizes the simultaneous fixation of a plurality of antennas, improves the maximum coverage area of the antennas, but also avoids the crosstalk problem among the antennas, improves the stability of antenna signals, enhances the strength of the signals received and transmitted by the antennas and can meet the requirements of users on the signal strength.

Description

Antenna support

Technical Field

The invention relates to the technical field of communication, in particular to an antenna bracket.

Background

With the continuous progress of data communication technology and the continuous improvement of people's living standard, people have higher and higher requirements for new product requirements, and in data communication products such as routers or television set-top boxes and other household products, in order to meet the requirements of people on product signal strength and enhance the strength of signals transmitted and received by the products, manufacturers can set antennas on the products.

However, the existing antenna design techniques have a plurality of disadvantages, such as: unreasonable antenna arrangement, complex structure, unstable signal reception and the like; therefore, the product yield is oriented to the market, the complaint feedback rate of consumers is increased, and heavy economic burden and negative influence are brought to production enterprises.

Disclosure of Invention

The invention aims to provide an antenna bracket, which realizes the simultaneous fixation of a plurality of antennas, improves the maximum coverage area of the antennas, avoids the problem of crosstalk among the antennas, improves the stability of antenna signals, enhances the strength of the antennas for receiving and transmitting signals and can meet the requirements of users on the signal strength.

The technical scheme provided by the invention is as follows:

an antenna stand, comprising:

the upper surface of the bottom plate is provided with a plurality of grooves used for accommodating the antenna side by side;

a fixing component is arranged on the side wall of the groove;

the fixing component is used for fixing the antenna.

In the technical scheme, a multi-slot antenna bracket structure capable of placing a plurality of antennas is adopted, so that the antennas are fixed at the same time, the maximum coverage area of the antennas is improved, the problem of crosstalk among the antennas is avoided, the stability of antenna signals is improved, the strength of signals received and transmitted by the antennas is enhanced, and the requirement of a user on the signal strength can be met; the antenna is further fixed through the fixing component while being clamped in the groove, so that the connection tightness between the antenna and the antenna is enhanced, the antenna cannot be loosened or fall from the antenna bracket when a product is subjected to a drop test, the product can pass the drop test, and the quality of the product is further ensured; in conclusion, the product of the invention can meet the signal requirements of customers. And during actual production, the number and the structure of the grooves can be designed according to the requirements of products or customers on signal strength, the application range is wide, and the method has good market prospect and market requirements.

Further preferably, a plurality of first through holes are arranged on the bottom plate side by side; the first through holes and the grooves are parallel and arranged at intervals.

In the technical scheme, the grooves and the first through holes are arranged at intervals, so that the antenna support forms an antenna support structure with a hollow structure, the wall penetrating effect of the antenna is enhanced, and the maximum coverage area of the antenna is further improved; the stability of the antenna signal is improved, and the strength of the antenna for receiving and transmitting the signal is further enhanced; and the heat dissipation performance of the product can be improved due to the arrangement of the plurality of holes.

Further preferably, a support plate is also included; the supporting plate is obtained by extending two ends parallel to the groove and is arranged on the lower surface of the bottom plate.

Among this technical scheme, in order to let the center of antenna boom and different structures be connected, antenna boom still is equipped with the backup pad, like this, can also form the cavity of other spare parts of a holding between antenna boom and the center, can improve integrating of center for contain the compact structure of the product of antenna boom and center, integrate the height.

Further preferably, the support plate is provided with a plurality of second through holes.

In the technical scheme, the arrangement of the second through hole can further improve the heat dissipation performance of the product.

Further preferably, a plurality of pairs of bosses are arranged on the bottom surface of the groove side by side, and the bosses are formed by extending the bottom surface towards the antenna direction.

In this technical scheme, the built on stilts setting of antenna can be realized to the boss, and then forms the passageway between antenna and bottom plate, has increased the thermal circulation passageway in the structure, and the boss has still avoided the contact of laminating completely of antenna and bottom plate for the antenna is in the area of force greatly reduced that falls, and then protects the antenna, prolongs the life of antenna.

Further preferably, one end of one side wall of the groove is provided with a limiting plate, and the limiting plate extends from the side wall of the groove to the direction of the groove.

Among this technical scheme, the setting of limiting plate has improved the convenience of antenna assembly on antenna boom, and then has improved the productivity of product to bring good economic benefits for manufacturing enterprise.

Further preferably, the antenna comprises a 2.4G antenna and a 5G antenna; the 2.4G antenna with the 5G antenna is arranged in the groove at intervals in sequence.

In the technical scheme, the antennas of different models are arranged in the grooves in a staggered mode, the distance between the antennas of the same model is increased, and crosstalk between the antennas of the same model is further reduced, so that the stability of signals of products is further improved, the strength of the products for receiving and transmitting signals is enhanced, and further the signal requirements of customers are met.

Further preferably, the fixing component is an inverted L-shaped structural plate arranged on the side wall of the groove relatively; the inner right angles of the inverted L-shaped structural plates are oppositely arranged.

Among this technical scheme, through the limiting displacement of the interior right angle of type of falling L structural slab, can fix the antenna in the recess steadily firmly to guarantee that the product can not take place not hard up or the phenomenon that drops when drop test, guarantee that the product passes through drop test, and then guaranteed the good quality of product.

Further preferably, the inverted-L structural panels comprise straight panels and riser panels; the vertical plate is arranged on the side wall of the groove; the straight board includes expansion end and stiff end, the stiff end with the riser is connected, the expansion end winds the stiff end rotates and is kept away from or is close to the motion of recess.

Among this technical scheme, through opening and the lock action of falling L type structural slab, improved the equipment speed and the convenience of antenna, and then improved the productivity of product to improve manufacturing enterprise's economic income.

Further preferably, the lower surface of the bottom plate is provided with a connecting assembly for connecting with the middle frame.

Among this technical scheme, coupling assembling can improve the compactness of being connected between antenna boom and the center, and then guarantees that the product can drop test and quality.

The antenna bracket provided by the invention can bring at least one of the following beneficial effects:

1. in the invention, a multi-slot antenna bracket structure capable of placing a plurality of antennas is adopted, so that the simultaneous fixation of the plurality of antennas is realized, the maximum coverage area of the antennas is improved, the problem of crosstalk among the antennas is avoided, the stability of antenna signals is improved, the strength of signals received and transmitted by the antennas is enhanced, and the requirement of a user on the signal strength can be met; and the antenna is further fixed through the fixing component when the groove is arranged in the clamping manner, so that the connection tightness between the antenna and the antenna is enhanced, the antenna cannot be loosened or fall from the antenna bracket when a product is subjected to a drop test, and the product can pass through the drop test, so that the product quality is ensured.

2. In the invention, the antennae with different models are arranged in the grooves in a staggered manner, so that the distance between the antennae with the same model is increased, and the crosstalk between the antennae with the same model is further reduced, thereby further improving the stability of product signals, enhancing the strength of the products for receiving and transmitting signals and further meeting the signal requirements of customers.

3. In the invention, during actual production, the number and the structure of the grooves can be designed according to the requirements of products or customers on signal strength, the application range is wide, and the method has good market prospect and market requirements.

4. According to the invention, the antenna in the groove is further fixed and positioned through the fixing component and the limiting plate, so that convenience in product assembly is facilitated, and further the productivity of the product and the economic benefit of a production enterprise are improved.

Drawings

The above features, technical features, advantages and modes of realisation of an antenna support will be further explained in the following, in a clearly understandable manner, with reference to the accompanying drawings, which illustrate preferred embodiments.

FIG. 1 is a front view schematic diagram of an embodiment of the present invention;

FIG. 2 is a bottom view of the structure of FIG. 1;

FIG. 3 is a schematic diagram of a fixed antenna according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a middle frame adapted to the antenna mount of the present invention;

fig. 5 is a schematic view of the combination structure of the antenna support of the present invention and the frame of fig. 4.

The reference numbers illustrate:

100. the printed circuit board comprises a base plate, a 110 groove, a 111 boss, a 112 limiting plate, a 120 fixing component, a 130 first through hole, a 200 supporting plate, a 210 second through hole, a 300 positioning square column, an 410.2.4G antenna, a 420.5G antenna, a 500 middle frame, a 510 middle plate, a 511 third through hole, a 512 mounting position, a 513 fourth through hole, a 514 positioning square hole, a 520 first frame, a 521 snap plate, a 522 fifth through hole, a 530 second frame, a 540 third frame, a 541 screw hole, a 550 fourth frame, a 551 equipment hole, a 560 sixth through hole, a 600 PCBA circuit board and a 700 base.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

In one embodiment, as shown in fig. 1 and 2, an antenna stand includes: a bottom plate 100, wherein the upper surface of the bottom plate 100 is provided with a plurality of grooves 110 for accommodating antennas (not shown in the figures) side by side; the sidewall of the groove 110 is provided with a fixing member 120 for fixing the antenna. A plurality of antennas can be placed in the plurality of grooves 110 on the bottom plate 100, so that the maximum coverage area of the antennas is increased, the problem of crosstalk between the antennas is avoided, the stability of antenna signals is improved, the strength of signals received and transmitted by the antennas is enhanced, and the requirements of users on the signal strength can be met; when the antenna is clamped in the groove 110, the antenna is further fixed and limited by the fixing component 120 on the side wall of the groove 110, so that the connection tightness between the antenna and the antenna is enhanced, the antenna cannot be loosened or fall from an antenna bracket when a product is subjected to a drop test, the product can pass the drop test, and the quality of the product is further ensured; in addition, during actual production, the number and the structure of the grooves 110 can be designed according to the requirements of products or customers on signal strength, the application range is wide, and good market prospects and market requirements are realized.

In the second embodiment, as shown in fig. 1 to 5, on the basis of the first embodiment, the bottom plate 100 is further provided with a plurality of first through holes 120 side by side, the first through holes 120 are parallel to the grooves 110 and are arranged on the bottom plate 100 at intervals, and due to the spacing effect of the first through holes 120, the distance between the antennas is increased, thereby further avoiding the antenna crosstalk phenomenon; the first through hole 120 also improves the wall-through effect of the antenna, and improves the stability and signal strength of the product signal; the first through hole 120 also improves the heat dissipation performance of the product. The two ends of the bottom plate 100 parallel to the groove 110 are further provided with a support plate 200, the support plate 200 is disposed on the lower surface of the bottom plate 100 (i.e. the support plate 200 and the groove 110 are disposed on the two side surfaces of the bottom plate 100 respectively), and the support plate 200 is further provided with a plurality of second through holes 210, preferably, the second through holes 210 are strip-shaped through holes and are uniformly distributed, wherein the extending direction of the strip-shaped through holes is the same as the length direction of the support plate 200; the plurality of positioning square columns 300 used for being connected with the middle frame 500 are arranged on the bottom plate 100 on the same side with the supporting plate 200, the arrangement of the supporting plate 200 and the positioning centering columns not only increases the possibility of the antenna bracket being matched with the middle frames 500 of various different structures and the connection tightness, and ensures that the antenna bracket and the middle frame 500 can pass the drop test of a product when being assembled together, but also improves the heat dissipation performance of the product due to the arrangement of the second through holes 210, the wall penetrating effect of the antenna is also improved, the signal stability of the antenna is improved, the coverage area and the capacity of the antenna are improved, and therefore the requirements of customers on the signal intensity of the product are met.

In the third embodiment, as shown in fig. 1 to 5, on the basis of the first or second embodiment, a plurality of pairs of bosses 111 are arranged side by side on the bottom surface of the groove 110, and the bosses 111 are extended from the bottom surface toward the antenna direction. And one end of a sidewall of the groove 110 is provided with a limiting plate 112, the limiting plate 112 extends from the sidewall of the groove 110 to the direction of the groove 110, but the limiting plate 112 does not block one end of the groove 110, and the limiting plate 112 has a certain distance with the sidewall of the groove 110 opposite to the limiting plate 112, so as to form a card slot (not shown) through which only a part of the antenna can pass. And a fixing component 120 for fixing the antenna is arranged on the side wall of the groove 110; the fixing assembly 120 includes an inverted-L-shaped structural plate (not shown) disposed on the sidewall of the groove 110, and the inner right angle of the inverted-L-shaped structural plate is disposed opposite to each other, such that a flat plate (not shown) of the inverted-L-shaped structural plate and the boss 111 form a through groove (not shown) for accommodating the antenna, when the antenna is actually installed, the antenna can enter the through groove from a side where the limiting plate 112 is not disposed, when the antenna is plate-shaped, two ends of the antenna become gradually wider towards the middle, and then tend to be flat, due to the limiting effect of the limiting plate 112, when one end of the antenna reaches the limiting plate 112, the gradually wider portion is clamped by the limiting plate 112, and cannot be pushed into, thereby achieving the antenna assembly. Of course, when the inverted-L-shaped structural plate is made of a flexible or elastic material, the antenna can also be directly pressed into the through groove when the antenna is assembled; when the inverted-L structural panel comprises straight panels (not shown) and vertical panels (not shown); the vertical plate is arranged on the side wall of the groove 110; the straight plate comprises a movable end (not marked in the figure) and a fixed end (not marked in the figure), the fixed end is connected with the vertical plate, the movable end rotates around the fixed end to move away from or close to the groove 110, the opening and the buckling action of the inverted L-shaped structural plate are realized, the disassembly and the assembly of the antenna are further realized, the assembly speed and the convenience of the antenna are improved, the productivity of a product is further improved, and the economic benefit of a production enterprise is further improved. Of course, the fixing component 120 may be other connecting members with fixing function.

It is worth pointing out that the through holes on the antenna bracket not only have the heat dissipation function, but also avoid the antenna crosstalk phenomenon, improve the strength of the transmission and receiving signals of the product, the coverage capability and the area of the antenna, and the wall-through effect of the antenna, greatly improve the communication quality of the product, and bring better network speed experience for users. In practical application, the through holes on the antenna support can be arranged to form geometric figures with different shapes according to actual needs, and the number of the through holes can also be arranged according to actual needs.

Illustratively, as shown in fig. 1 to 3, the present invention is applied to a specific case when an antenna is fixed to an antenna bracket:

five grooves 110 are arranged on the bottom plate 100 of the antenna bracket, three 2.4G antennas 410 and two 5G antennas 420 are arranged in the five grooves 110 at intervals, so that the distance between two adjacent antennas (2.4G antennas 410 or 5G antennas 420) with the same model is increased, the distance between the antennas with the same model is increased, the problem of crosstalk between the antennas with the same model is avoided to the greatest extent, the stability, the strength, the coverage capability and the area of the antennas are further increased, and a better network service is provided for users. When the antenna is actually installed, only the end of the antenna, which is not provided with the limiting plate 112, needs to be inserted into the groove 110; or opening the inverted-L-shaped structural plate which can be buckled with the antenna, putting the antenna into the groove 110, and then buckling the L-shaped structural plate; or directly pressing the antenna into the inner right angle of the flexible inverted L-shaped structural plate; the antenna is assembled, and the operation is very simple and convenient. Of course, the process of disassembling the antenna is the reverse of the process of assembling the antenna, and therefore, the description thereof is not repeated herein.

Illustratively, as shown in fig. 1 to 5, the combination of the antenna support and the middle frame of the present invention is specifically applied:

the middle frame 500 is composed of a middle plate 510 and frames (i.e. a first frame 520, a second frame 530, a third frame 540 and a fourth frame 550 which are connected in sequence) arranged around the middle plate 510, wherein the middle plate 510 and the frames are arranged to form a chamber with an opening, the longitudinal cross section of the middle frame 500 is a waist-shaped structure, the second frame 530 and the fourth frame 550 are waists on both sides of the waist-shaped structure, and the middle plate 510 is an arc-shaped plate of which one of the waists is connected with the first frame 520, the second frame 530, the third frame 230 and the fourth frame 550 respectively; the middle plate 510 is connected with the frames and the frames (i.e. the first frame 520, the second frame 530, the third frame 540 and the fourth frame 550) by joggling; the antenna support matched with the waist-shaped structure of the middle frame 500 is assembled in the cavity of the middle frame 500, the antenna support is placed at one end close to the first side frame 520, the PCBA circuit board 600 (a finished product of a printed circuit board assembled by a surface assembly technology) connected with the antenna support is arranged beside the antenna support, and one end close to the third side frame 540, so that the connection between an antenna female buckle port (not marked in the figure) on the PCBA circuit board 600 and an antenna arranged on the antenna support is facilitated, the length of an antenna feeder (not marked in the figure) connecting the antenna and the antenna female buckle port is saved, and one end of the antenna connected with the antenna feeder is arranged close to the PCBA circuit board 600. The second frame 530, the third frame 540 and the fourth frame 550 are all provided with sixth through holes 560, the fourth frame 550 close to the PCBA circuit board 600 is also provided with a plurality of equipment holes 551, one of the equipment holes 551 is also provided with a button switch 552, and the other equipment holes 551 are used for connecting with other external equipment (not marked in the figure); the sixth through holes 560 of the second frame 530 and the fourth frame 550 that are disposed close to and opposite to one side of the antenna bracket and the second through holes 210 disposed on the supporting plate 200 are all long-strip-shaped through holes and are uniformly distributed, wherein, the extending direction of the strip-shaped through holes is the same as the length direction of the support plate 200, the second frame 530 and the fourth frame 550, when the antenna support and the middle frame 500 are assembled, the sixth through holes 560 on the second and fourth rims 530 and 550 and the second through holes 210 on the support plate 200 are misaligned (i.e., left and right and/or up and down), thus, when viewed from the outside of the middle frame 500 to the inside thereof, the components provided in the middle frame 500 are not visible, and the dislocation arrangement also prevents impurities such as dust and water at the outer side of the middle frame 500 from entering the inner part of the middle frame 500, and further damage the internal parts, thereby protecting the combined structure and prolonging the service life of the combined structure. In order to further strengthen the connection between the antenna bracket and the middle frame 500, a fastening plate 521 adapted to the bottom plate 100 extends from a side of the first frame 520 close to the antenna bracket, and the fastening plate 521 is disposed at a side of the bottom plate 100 close to the groove 110, so that the fastening plate 521 can fasten and press the antenna bracket, thereby making the connection between the antenna bracket and the middle frame 500 more stable. The fastening plate 521 is provided with a plurality of fifth through holes 522, so that the heat dissipation performance of the combined structure is further improved. The third frame 540 is further provided with a plurality of screw holes 541, so that the third frame 540 can be connected with the base 700 through the screw holes 541, the third frame 540 is provided with a plurality of sixth through holes 560 around its own outer contour line, the sixth through holes 560 are formed in an arc shape, in order to avoid the base 700 from shielding the sixth through holes 560 arranged on the third frame 540, the base 700 is a waist-shaped plate smaller than the arc shape and is arranged in the middle of the third frame 540, that is, in the inside surrounded by the sixth through holes 560 on the third frame 540. A plurality of mounting positions 512 for mounting the antennas are arranged on one side of the middle plate 510 close to the antenna support, the mounting positions 512 are close to one side of the cavity of the middle frame 500, the mounting number of the antennas is increased due to the arrangement of the mounting positions 512, the strength of signals of the combined structure is further increased, the mounting positions 512 and the antennas on the grooves 110 form a 0-shaped distribution structure, the mounting number of the antennas is increased, the crosstalk phenomenon of the antennas can be avoided, and a plurality of fourth through holes 513 are further formed in the mounting positions 512; a plurality of third through holes 511 are formed in one side of the middle plate 510 close to the PCBA circuit board 600 and close to the first frame 520; the middle frame 500 and the antenna bracket are tightly connected together by assembling the positioning square hole 514 formed on the middle plate 510 and the positioning square post 300 formed on the bottom plate 100 and matched with the positioning square hole 514.

In actual installation, the first step is as follows: the three plate-shaped 2.4G antennas 410 and the two plate-shaped 5G antennas 420 are pressed into the five grooves 110 of the antenna bracket at intervals, at this time, the antennas (i.e., the 2.4G antennas 410 and the 5G antennas 420) are fixedly arranged in the grooves 110 by the clamping effect of the grooves 110, and one end of the antenna feeder line, which is not provided with a male buckle port (not marked in the figure), is connected with one end of the antenna close to the PCBA circuit board 600, so that an antenna bracket assembly finished product is formed. The second step is that: then, one 2.4G antenna 410 and two 5G antennas 420 in a plate shape are placed in three mounting positions 512 on the middle plate 510; the PCBA 600 with the antenna fastener is then placed in the cavity of the middle frame 500 and adjacent to the third frame 540, wherein the end of the PCBA 600 with the antenna female fastener port is adjacent to the first frame 520, and the PCBA 600 is locked and fixed in the cavity of the middle frame 500 by screws (not shown). The third step: placing the antenna bracket assembly finished product in a cavity of the middle frame 500, placing one end without an antenna feeder close to the first side frame 520 in the cavity of the middle frame 500, assembling the antenna bracket and the middle frame 500 through connecting components (namely the positioning square column 300 and the positioning square hole 514) which are respectively arranged on the antenna bracket and the middle frame 500 and are mutually matched, and at the moment, positioning the buckling plate 521 at the outer side of the antenna bracket and further clamping the antenna bracket in the cavity of the middle frame 500; at this time, the second through holes 210 on the support plate 200 at the two sides of the antenna support and the sixth through holes 560 on the frames (i.e., the sixth through holes 560 on the second frame 530 and the fourth frame 550) are staggered with each other (i.e., staggered up and down and/or left and right); and the male buckle port at the end of the antenna feeder is buckled to the female buckle port of the antenna on the PCBA circuit board 600 for pressing and buckling, so that the whole assembly procedure of the antenna bracket, the middle frame 500 and the PCBA circuit board 600 is completed. The fourth step: the third frame 540 and the base 700 are screwed tightly by using screws and screw holes 541.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An antenna stand, comprising:

the correspondingly arranged grooves and the antenna have the same extension direction;

a fixing component is arranged on the side wall of the groove;

the fixing component is used for fixing the antenna;

a plurality of first through holes are arranged on the bottom plate side by side;

the first through holes and the grooves are parallel and arranged at intervals.

2. The antenna stand of claim 1, wherein:

the device also comprises a supporting plate;

the supporting plate is obtained by extending two ends parallel to the groove and is arranged on the lower surface of the bottom plate.

3. The antenna stand of claim 2, wherein:

the supporting plate is provided with a plurality of second through holes.

4. The antenna stand of claim 1, wherein:

the bottom surface of the groove is provided with a plurality of pairs of bosses side by side, and the bosses are obtained by extending the bottom surface towards the direction of the antenna.

5. The antenna stand of claim 1, wherein:

one end of one side wall of the groove is provided with a limiting plate, and the limiting plate extends from the side wall of the groove to the direction of the groove.

6. The antenna stand of claim 1, wherein:

the antennas comprise a 2.4G antenna and a 5G antenna;

the 2.4G antenna with the 5G antenna is arranged in the groove at intervals in sequence.

7. The antenna stand of claim 1, wherein:

the fixing component is an inverted L-shaped structural plate which is oppositely arranged on the side wall of the groove;

the inner right angles of the inverted L-shaped structural plates are oppositely arranged.

8. The antenna stand of claim 7, wherein:

the inverted L-shaped structural slab comprises a straight slab and a vertical slab;

the vertical plate is arranged on the side wall of the groove;

the straight board includes expansion end and stiff end, the stiff end with the riser is connected, the expansion end winds the stiff end rotates and is kept away from or is close to the motion of recess.

9. An antenna stand according to any of claims 1-8, characterized in that:

the lower surface of bottom plate is equipped with the coupling assembling that is used for being connected with the center.