CN212011282U

CN212011282U - Foldable yagi antenna

Info

Publication number: CN212011282U
Application number: CN202020522938.0U
Authority: CN
Inventors: 詹镇安
Original assignee: Fujian Jiasida Communication Tech Co ltd
Current assignee: Fujian Jiasida Communication Tech Co ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-11-24
Anticipated expiration: 2030-04-10

Abstract

The utility model discloses a foldable yagi antenna, which comprises a main rod, the main rod is at least provided with two groups of vibrator components from top to bottom in sequence, each group of vibrator components comprises guide rods symmetrically arranged at two sides of the main rod, each guide rod comprises a joint component fixed on the main rod, the tail end of each guide rod is rotatably arranged on the joint component, each joint component comprises an L-shaped joint sleeve and a positioning buckle, two communicated and mutually vertical positioning grooves are arranged on the L-shaped joint sleeve, two sides of each positioning groove are provided with a concave surface and a convex surface which are arranged on the inner wall of the L-shaped joint sleeve and matched with the guide rods, the guide rods of the utility model can be rotatably folded through the joint sleeves arranged on the main rod, the concave surface and the convex surface in the positioning grooves can clamp the guide rods tightly, the guide rods cannot be loosened up and down, the guide rods are not easy to loosen and be fixed, and the volume of the antenna can be reduced after, the antenna can be stored and transported more easily after being folded.

Description

Foldable yagi antenna

Technical Field

The utility model relates to an antenna, concretely relates to collapsible yagi antenna.

Background

Yagi antenna is composed of an active excitation vibrator and several passive vibrators, all the vibrators are parallelly mounted on same plane, and their centre is fixed by a lead tube (also can be non-metal-wood). The active oscillator is a basic half-wave dipole antenna, and when the commercial yagi antenna-especially used for television receiving-the folded half-section dipole antenna is used as the active oscillator, it has the advantages of higher impedance, easy matching, wider frequency and suitability for 8MHz passband of television signals. However, the conventional element cannot be folded in the yagi antenna, which causes the yagi antenna to have a disadvantage of inconvenient storage and transportation, because the element cannot be folded, which causes the yagi antenna to have an excessively large volume.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned weak point that exists among the prior art, the utility model aims to provide a collapsible yagi antenna, the oscillator on this antenna is collapsible, and it is too big to reduce the volume, is convenient for accomodate and transport.

The utility model discloses a following technical scheme realizes: a foldable yagi antenna comprises a main rod, wherein the main rod is sequentially provided with at least two groups of vibrator assemblies from top to bottom, each group of vibrator assemblies comprises guide rods symmetrically arranged on two sides of the main rod, each guide rod comprises a joint assembly fixed on the main rod, the tail end of each guide rod is rotatably arranged on the joint assembly, each joint assembly comprises an L-shaped joint sleeve and a positioning buckle, two mutually perpendicular positioning grooves are arranged on the L-shaped joint sleeve, a mounting hole connected with the main rod is arranged on each positioning groove, double-headed screws penetrating through two sides are arranged on the main rod, the L-shaped joint sleeves on two sides of the main rod are fixed with the double-headed screws through the mounting holes by fastening nuts, the positioning buckles are sleeved at the intersections of the two positioning grooves, the tail ends of the guide rods are provided with through holes, and screws penetrate through the L-shaped joint, the positioning buckle and the through hole of the guide rod are locked and fixed by nuts, and concave surfaces and convex surfaces which are matched with the guide rod and arranged on the inner wall of the L-shaped joint sleeve are arranged on two sides of each positioning groove.

Further, the mobile jib is equipped with three group's oscillators from top to bottom in proper order.

Further, three group's oscillators include first group's oscillator, second group's oscillator and third group's oscillator.

Further, the length of first group's oscillator is less than second group's oscillator length, the length of second group's oscillator is less than third group's oscillator length.

Further, a guide rod on the second group of vibrators is provided with a matcher.

Compared with the prior art, the utility model, following advantage and beneficial effect have: the utility model discloses a lead to the pole and can rotate foldingly through installing the adapter sleeve on the mobile jib, and the concave surface in the constant head tank and the cooperation of convex surface can press from both sides tightly the pole that leads to, can not make the pole that leads not hard up from top to bottom, and difficult not hard up and fixed leads to and can reduce the antenna volume after the pole is folding simultaneously, makes the antenna accomodate more easily after folding and transport.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of the utility model after being unfolded;

fig. 2 is an exploded view of the utility model after being folded;

fig. 3 is a schematic structural view of the joint assembly of the present invention;

FIG. 4 is a side view of the structure of FIG. 3;

wherein: the vibration generator comprises a main rod 1, a first group of vibrators 2, a second group of vibrators 3, a third group of vibrators 4, a guide rod 5, a joint component 6, a joint sleeve 7, an L-shaped joint sleeve 8, a positioning buckle 9, a positioning groove 10, a screw 11, a concave surface 12, a convex surface 13, a nut 14, a mounting hole 15 and a matcher.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 4, the foldable yagi antenna of the present embodiment includes a main rod 1, where the main rod 1 is sequentially provided with three groups of oscillator components from top to bottom, the three groups of oscillators include a first group of oscillators 2, a second group of oscillators 3, and a third group of oscillators 4, the length of the first group of oscillators 2 is smaller than the length of the second group of oscillators 3, and the length of the second group of oscillators 3 is smaller than the length of the third group of oscillators 4; each group of vibrator components comprises guide rods 5 symmetrically arranged at two sides of the main rod 1, and one guide rod 5 on the second group of vibrators is provided with a matcher 15.

Each guide rod 5 comprises a joint component 6 fixed on the main rod 1, the tail end of each guide rod 5 is rotatably arranged on the joint component 6, each joint component 6 comprises an L-shaped joint sleeve 7 and a positioning buckle 8, two positioning grooves 9 which are communicated and mutually perpendicular are arranged on the L-shaped joint sleeve 7, a mounting hole 14 connected with the main rod is arranged on each positioning groove 9, double-head screw rods penetrating through two sides are arranged on the main rod 1, the L-shaped joint sleeves on two sides of the main rod are fixed with the double-head screw rods through the mounting holes 14 by fastening nuts, the positioning buckles 8 are sleeved at the intersections of the two positioning grooves 9, a through hole is arranged at the tail end of each guide rod 5, a screw 10 penetrates through the L-shaped joint sleeves 7, the positioning buckles 8 and the through holes of the guide rods 5 and is locked and fixed by nuts 13, the aperture of the screw is slightly larger than the outer diameter of the screw, so that the guide rods can rotate around the pivots of the screw 10, and because concave surfaces 11 and convex surfaces 12 which are matched with, when the antenna is used, each leading rod 5 can be folded by breaking each leading rod with hands, and the leading rods can be matched with the concave surface 11 and the convex surface 12 in the positioning groove 9 after being folded or unfolded so as to clamp the leading rods 5, so that the leading rods 5 cannot be loosened up and down, the size of the antenna can be reduced after the leading rods are folded, and the antenna can be stored and transported more easily after being folded.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. Collapsible yagi antenna, including the mobile jib, the mobile jib from top to bottom is equipped with two sets of vibrator subassemblies at least in proper order, and every vibrator subassembly of group includes that the symmetry sets up the guide pole in the mobile jib both sides, its characterized in that: every root direction pole is including fixing the joint Assembly on the mobile jib, every direction pole end is rotationally installed on joint Assembly, every joint Assembly is detained including being L type splice closure and location, be equipped with the communicating and mutually perpendicular's of twice constant head tank on the L type splice closure, be equipped with the mounting hole of being connected with the mobile jib on the constant head tank, be equipped with the double-end screw pole that passes both sides on the mobile jib, the L type splice closure of mobile jib both sides is fixed by fastening nut through mounting hole and double-end screw pole, the cross section at two constant head tanks is established to the location knot cover, it has a through-hole to lead to the end-to-open of pole, the screw passes L type splice closure, the through-hole of location knot and direction pole is fixed by nut locking, the both sides of every constant head tank are equipped with on L type splice closure inner wall and.

2. The foldable yagi antenna of claim 1, wherein: the mobile jib is equipped with three groups of oscillators from top to bottom in proper order.

3. The foldable yagi antenna of claim 2, wherein: the three groups of vibrators comprise a first group of vibrators, a second group of vibrators and a third group of vibrators.

4. The foldable yagi antenna of claim 3, wherein: the length of the first group of vibrators is smaller than that of the second group of vibrators, and the length of the second group of vibrators is smaller than that of the third group of vibrators.

5. A foldable yagi antenna according to claim 3 or 4, wherein: and a guide rod on the second group of vibrators is provided with a matcher.