JPH0720703U - Antenna reflector mount - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention does not cause defects or damage due to aging even when a plastic material is used in a fixture for an antenna reflector installed outdoors such as for television reception. The purpose is to obtain high durability and high reliability. [Structure] The semi-circular protrusion 4 is formed on the outer surface of the first side plate 46 in the joint fixing portion 42 of each of the upper fixture 41a and the lower fixture 41b formed as arms having a U-shaped cross section.
9 is provided, and the second side plate 47 is provided with a semicircular hole 50 into which the semicircular projection 49 is fitted and locked at a predetermined dogleg-shaped expansion angle of the vertical attachments 41a and 41b. The tip corner portion 52 of the first side plate 46 is the second side plate 4
A notch groove 51 to be fitted along the inner surface of 7 is formed, and the thumbscrew 20 is tightened and fixed while the antenna arm is inserted between the arcuate notches 45 of the U-shaped bottom plate 44. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an antenna reflector mount used for mounting a reflector of an antenna installed outdoors, such as for television reception.

[0002]

[Prior art]

 FIG. 4 is an external view showing a UHF television receiving antenna. In FIG. 4, 11 is a mast that serves as a pillar, 12 is a UHF television receiving antenna, 13 is an antenna arm that serves as the main axis of the antenna 12, 14 is a waveguide element arranged with respect to the antenna arm 13, and 15 is a waveguide element 14 The radiating element that converges the UHF wave guided by the, 16 is a reflector that converges the UHF wave on the radiating element 15, 17 is a power supply unit that derives the UHF wave signal that is converged on the radiating element 15, and 18 is a mast. Reference numeral 11 denotes a mast mounting bracket for mounting and fixing the antenna 12 to 11, and 19 denotes an antenna auxiliary arm mounted to the mast 11 via the mast mounting bracket 18 and supporting the antenna arm 13 of the antenna 12.

The reflector 16 is formed in a dogleg shape in the direction of the radiating element 15 by an upper mounting tool 16 a and a lower mounting tool 16 b which are fixed by thumbscrews 20 around the rear end of the antenna arm 13. In the packaged state of the antenna 13, the reflector attachments 16a and 16b are folded so that the thumbscrew 20 is loosened and the deployment angle of the dogleg is narrowed. When the antenna 16 is assembled, the reflector 16 is locked at a predetermined expansion angle by opening the reflector attachments 16a and 16b in a dogleg shape, and is fixed by tightening the thumbscrew 20. .

FIG. 5 is an external perspective view showing a deployment lock state of a conventional antenna reflector fixture. FIG. 6 is an external perspective view showing a conventional antenna reflector attachment in a vertically separated state.

FIG. 7 is an external perspective view showing a developed and assembled state of a conventional antenna reflector fixture. That is, the upper mounting tool 21a and the lower mounting tool 21b have exactly the same structure, and are formed as an arm having a U-shaped cross section with an opening facing the antenna directing direction. Is provided with a coupling / fixing portion 22 for fixing to the antenna arm 13 so as to be coupled and integrated with the other fixture, and in order to horizontally support a reflecting element (not shown) in the middle portion of the arm. The element insertion portions 23a, 23b, and 23c are provided.

In the coupling / fixing portion 22, an arm insertion recess 25 for inserting the antenna arm 13 is formed at an end portion of the U-shaped bottom plate 24. Each of the first side plate 26 and the second side plate 27 has a semicircular tip end.

On the outer surface of the first side surface plate 26, an annular protrusion 29 having a shaft insertion hole 28 at the center is provided offset toward the U-shaped opening surface. Is formed with a fitting hole 30 into which the annular protrusion 29 is fitted.

The second side plate 27 is offset to the outside by one step in a key shape in the range of the coupling fixing portion 22, and when the second side plate 27 is coupled and integrated with the other fixture, The annular projection 29 of the first side surface plate 26 is fitted from the outside of the side surface plate 26 and is fitted into the fitting hole 30 of the second side surface plate 27.

Further, a lock claw portion 31 along the semicircular arc is provided on the outer peripheral portion of the second side face plate 27 near the U-shaped bottom face, and the U-shaped face of the corresponding first side face plate 26 is provided. The annular protrusion 29 of the first side surface plate 26 is fitted into the fitting hole 30 of the second side surface plate 27 on the outer peripheral portion near the bottom surface, and the upper and lower attachments 21a and 21b are connected at a predetermined dogleg angle. A lock projection 33 is provided that is locked and fixed to the tip groove 32 of the lock claw portion 31 when integrated.

That is, the reflector attachments 21 a and 21 b are arranged such that the annular protrusions 29 of the first side plates 26 are inserted in a state where the antenna arm 13 is inserted between the arm insertion portions 25 of the attachments. 7 is fitted into the fitting hole 30 of the second side plate 27 of the mating fixture from the inside, and the shaft of the thumbscrew 20 is inserted through the antenna arm 13 between the shaft insertion holes 28. As shown in, it is packed with its dogleg-shaped expansion angle at its narrowest.

When assembling the antenna 12, the upper and lower attachments 21a and 21b are developed in a doglegged shape around the shaft insertion hole 28. In this case, as shown by an arrow B in FIG. The locking projections 33 provided on the first side surface plate 26 of each of the mounting tools 21a and 21b rotate while being circumscribed with the locking claw portion 31 provided on the second side surface plate 27 of the counterpart mounting tool. The portion 31 gradually elastically deforms inwardly, and as shown in FIG. 5, the lock projection 33 of the first side plate 26 causes the lock claw portion of the second side plate 27 to reach a predetermined dogleg development angle. It is locked in the tip groove 32 of 31. As a result, the reflector mounts 21a and 21b are combined and integrated, and when the thumbscrew 20 is tightened, they are fixed to the antenna arm 13.

[0012]

[Problems to be solved by the device]

 However, the above-mentioned conventional antenna reflector attachments 21a and 21b are mainly made of plastic material, and the lock claw portion 31 is elastically deformed as a locking mechanism between the upper and lower attachments 21a and 21b. Since the lock projection 33 is locked in the tip groove 32, it is likely to change over time due to the effects of outdoor temperature, humidity, ultraviolet rays, etc., and especially the lock claw portion 31 may be cracked or broken. There is.

In this case, there is a problem that the upper and lower attachments 21a and 21b are unlocked from each other and the reflector 16 is collapsed. The present invention has been made in view of the above problems. For example, even when a plastic material is used, it is possible to obtain high durability and high reliability without causing defects or damage due to aging. It is intended to provide a fixture for a vessel.

[0014]

[Means for Solving the Problems]

 That is, the antenna reflector mounting device according to the present invention is fixed in a dogleg shape with the antenna arm as the center, and has a U-shaped cross section for horizontally supporting the radiating element above and below the antenna arm. A mounting tool and a lower mounting tool, which are formed on a first side plate and a second side plate which form a U-shaped facing surface in the connecting and fixing part of the upper and lower mounting parts, and the antenna arm is interposed between them. Shaft insertion hole through which a screw shaft for fixing is inserted, a semi-circular projection portion projectingly formed on the outer side surface of the first side plate of each of the upper and lower attachments, and a second side plate of each of the upper and lower attachments. When the first side plate of the mating fixture overlaps along the inner side surface of the second side plate around the respective shaft insertion holes, the above-mentioned upper and lower mounting fixtures have a predetermined shape. There is a semi-circular hole at a character angle where the semi-circular protrusion is fitted and locked, and the upper and lower attachments are formed along the inner side surface of the second side plate, and the upper and lower attachments are at a predetermined angle angle. The notch groove into which the front end portion of the first side plate of the mating fixture is sandwiched is provided.

[0015]

[Action]

 That is, the semicircular protrusion of the U-shaped first side plate is locked in the semicircular hole of the second side plate of the mating fixture, and the tip of the first side plate is inserted in the notch groove. It becomes a structure that is prevented from coming off from the semi-circular hole of the semi-circular projection portion.

[0016]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view showing a deployment lock state of the antenna reflector mounting tool. FIG. 2 is an external perspective view showing the antenna reflector mount in a vertically separated state.

FIG. 3 is an external perspective view showing a developed and assembled state of the antenna reflector fixture. The upper mounting member 41a and the lower mounting member 41b have exactly the same configuration, and are made of, for example, an aluminum material, and are formed as arms having a U-shaped cross section having an opening facing the antenna pointing direction. At one end of the arm, there is provided a coupling / fixing portion 42 for fixing the antenna arm 13 (see FIG. 4) to the coupling / integration with the other fixture.

Further, element insertion portions 43a and 43b for horizontally supporting a reflection element (not shown) are provided in the middle portion of the arm. An arcuate cutout portion 45 for inserting the antenna arm 13 is formed at an end portion of the U-shaped bottom plate 44 in the coupling fixing portion 42.

In the coupling and fixing section 42, shaft insertion holes 48a and 48b are provided in the first side plate 46 and the second side plate 47 facing each other in a U shape, offset toward the U-shaped opening surface. .

The second side plate 47 is key-shaped offset toward the outer side by one step in the range of the coupling fixing portion 42, and when the second side plate 47 is coupled and integrated with the other fixture, The shaft 20a of the thumbscrew 20 is inserted through the shaft insertion holes 48a and 48b so as to cover the side plate 46 from the outside, and is integrated.

A semi-circular protrusion 49 is provided on the outer side surface of the first side surface plate 46 near the U-shaped bottom surface, and on the other hand, on the opposite side of the second side surface plate 47 near the U-shaped bottom surface, the shaft insertion portion is inserted. When the upper and lower attachments 41a, 41b are set to have a predetermined dogleg angle with the thumbscrew 20 inserted into the through holes 48a, 48b as an axis to combine and integrate them, the semicircular protrusion 49 is fitted and locked. A semi-circular hole 50 is provided.

Further, a cutout groove 51 is formed along the inner side surface of the second side surface plate 47 at the boundary bending portion between the second side surface plate 47 and the U-shaped bottom surface plate 44. In the groove 51, when the upper and lower attachments 41a and 41b are formed into a predetermined dogleg angle to be integrated with each other, the U-shaped bottom end side corner 52 of the first side plate 46 of the counterpart attachment is sandwiched. To be impressed.

Here, each of the semi-circular protrusion 49 and the semi-circular hole 50 is provided at a predetermined radial position centered on the shaft insertion holes 48a and 48b, and the semi-circular direction is counterclockwise. Is set in the direction of.

A semi-circular protrusion 49 provided on the first side plate 46 is provided at the tip of the second side plate 47 along with the unification of the upper and lower attachments 41a and 41b. An outer bent portion 53 is formed to smoothly slide along the inner surface of the face plate 47.

That is, in the antenna reflector mount having the above-described structure, the reflector mounts 41a and 41b are arranged in the state where the antenna arm 13 is inserted between the arcuate notches 45 of each mount. The second side surface plate 47 of the mating fixture is superposed on the outer side surface of the first side surface plate 46, and the shaft 20a of the thumbscrew 20 is inserted through the antenna arm 13 between the shaft insertion holes 28a and 28b. As shown by the arrow A in Fig. 3, the bag is packed with its dogleg-shaped deployment angle narrowest.

When assembling the UHF television receiving antenna 12 (see FIG. 4), the upper and lower fixtures 41a and 41b are developed in a doglegged shape around the shaft insertion holes 28a and 28b. In this case, as shown by the arrow B in FIG. 3, the semicircular protrusion 49 provided on the first side surface plate 46 of each mounting tool 41a, 41b is located outside the tip of the second side surface plate 47 of the counterpart mounting tool. Sliding inward from the bent portion 53 and reaching a predetermined dogleg development angle as shown in FIG. 1, a fitting lock is applied to the semicircular hole 50 provided in the second side plate 47. To be done.

In this case, the tip corner portion 52 of each first side plate 46 has a notch groove 51 formed at the boundary with the U-shaped bottom plate 44 along the inner side surface of the second side plate 47 in the mating fixture. It will be in a state in which it is inserted and sandwiched.

As a result, the reflector mounts 41a and 41b are integrated and integrated, and by tightening the thumbscrew 20, the reflector mounts 41a and 41b are fixed to the antenna arm 13. Here, when the thumbscrew 20 is tightened, the second side plates 47 and the first side plates 46 are slightly bent, and the side plates 47 in the locked state due to the semicircular protrusions 49 and the semicircular holes 50. , 46 tends to form a gap between them, but the front end corner portion 52 of the first side surface plate 46 fits into the notch groove 51 formed along the inner side surface of the second side surface plate 47 of the mating fixture. Therefore, it is prevented that a gap is generated between the side plates 47 and 46, and the semicircular projection 49 is prevented from being unlocked from the semicircular hole 50.

Further, as a mutual locking mechanism for the upper and lower attachments 41 a and 41 b, a semicircular protrusion 49 provided on the outer surface of the first side surface plate 46 is slid along the inner surface of the second side surface plate 47. Since the structure is such that it is fitted and locked in the semi-circular hole 50, cracks, breakage defects, etc., may not occur in the lock mechanism portion like the conventional reflector fixture shown in FIGS. 5 to 7. The collapse of the reflector 16 (see FIG. 4) is reliably prevented.

Therefore, according to the antenna reflector mounting member having the above-described configuration, the first side plate 46 of the coupling fixing portion 42 of each of the upper mounting member 41a and the lower mounting member 41b formed as an arm having a U-shaped cross section. A semi-circular projection 49 is provided on the outer side surface, and the semi-circular projection 49 is fitted and locked to the second side plate 47 at a predetermined dogleg-shaped deployment angle of the vertical attachments 41a and 41b. Since the circular hole 50 is provided and the tip corner portion 52 of the first side face plate 46 forms the notch groove 51 which fits along the inner side face of the second side face plate 47, the U-shaped bottom face plate 44 is formed. By tightening and fixing the thumbscrew 20 with the antenna arm 13 inserted between the arcuate notches 45, there is a fear that the semicircular hole 50 of the semicircular protrusion 49 may come out of the lock. If each lock mechanism is damaged Without fear, the locked state of the upper and lower attachments 41a and 41b can be surely obtained, and the durability and reliability can be improved.

[0031]

[Effect of device]

 As described above, according to the present invention, the upper mount and the lower part, which are fixed in a V shape around the antenna arm and have a U-shaped cross section for horizontally supporting the radiating element above and below the antenna arm, respectively. It is composed of a fixture, and is formed on the first side plate and the second side plate which form a U-shaped facing surface in the coupling and fixing part of the above-mentioned upper and lower fixtures, and the antenna arm is interposed therebetween for fixing. Shaft insertion hole for inserting the screw shaft of the above, a semi-circular protrusion formed on the outer side surface of the first side plate of each of the above-mentioned vertical attachments, and a second side plate of each of the above-mentioned vertical attachments Then, when the first side plate of the opposite side fitting overlaps along the inner side surface of the second side plate about each shaft insertion hole, the upper and lower mounting tools have a predetermined dogleg angle. There is the above half circle A semi-circular hole in which the start portion is fitted and locked is formed along the inner side surface of the second side surface plate, and the upper and lower attachments are at a predetermined dogleg angle, and the first side surface plate of the counterpart attachment is formed. And a notched groove into which the tip end is inserted, and the semicircular projection of the U-shaped first side plate is locked in the semicircular hole of the second side plate of the counterpart fixture, Since the tip of the first side plate is sandwiched in the notch groove to prevent the semicircular protrusion from coming off from the semicircular hole, even if a plastic material is used, for example, It is possible to obtain high durability and high reliability without causing defects or breakage of the lock mechanism part due to aging unlike the conventional reflector mount.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a deployment lock state of an antenna reflector mount according to an embodiment of the present invention.

FIG. 2 is an external perspective view showing a vertically separated state of the antenna reflector mounting tool.

FIG. 3 is an external perspective view showing a developed and assembled state of the antenna reflector mounting tool.

FIG. 4 is an external view showing a UHF television receiving antenna.

FIG. 5 is an external perspective view showing a deployment lock state of a conventional antenna reflector mounting tool.

FIG. 6 is an external perspective view showing a vertically separated state of a conventional antenna reflector fixture.

FIG. 7 is an external perspective view showing a developed and assembled state of a conventional antenna reflector fixture.

[Explanation of symbols]

12 ... UHF television receiving antenna, 13 ... Antenna arm, 16 ... Reflector, 20 ... Thumbscrew, 20a ... Screw shaft, 41a ... Upper fitting, 41b ... Lower fitting, 4
2 ... Coupling fixing part, 43a, 43b ... Element insertion part, 44 ...
U-shaped bottom plate, 45 ... Arc notch, 46 ... First side plate, 47 ... Second side plate, 48a, 48b ... Shaft insertion hole, 49 ... Semi-circular projection part, 50 ... Semi-circular hole, 51 ... Notch groove, 52 ... Tip corner portion, 53 ... Outer bent portion.

Claims (1)

[Scope of utility model registration request] 1. An antenna reflector comprising an upper mount and a lower mount which are fixed in a dogleg shape around an antenna arm and which have a U-shaped cross section and have the same structure for horizontally supporting a radiating element above and below the antenna arm. Of the above-mentioned upper and lower fixtures are formed on a first side plate and a second side plate which form a U-shaped facing surface in the joint fixing portion between the upper and lower fixtures, and the antenna arm is interposed therebetween to fix the screw shaft. A shaft insertion hole through which is inserted, a semicircular protrusion that is formed to project from the outer surface of the first side plate of each of the upper and lower attachments, and a second side plate of each of the upper and lower attachments. When the first side plate of the tool overlaps along the inner side surface of the second side plate about each shaft insertion hole, the upper and lower mounting tools are at a predetermined dogleg angle and The semi-circular hole into which the semi-circular protrusion is fitted and locked, and the semi-circular hole formed along the inner surface of the second side plate. The side plate has a notched groove into which the tip part of the side plate is sandwiched, and the semicircular protrusion of the U-shaped first side plate is locked in the semicircular hole of the second side plate of the counterpart fixture. An antenna reflector mounting tool characterized in that a tip end portion of the first side plate is sandwiched in the notch groove to prevent the semicircular projection portion from coming off from the semicircular hole.