JPH0522966Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The invention is based on a parabolic reflector whose base end is connected to a parabolic reflector.
The present invention relates to a device for attaching an exterior part including a primary radiator and a converter to the distal end of a support arm whose distal end extends toward the opening side of the parabolic reflector.

<Prior Art> Conventionally, the method of attaching the above-mentioned exterior part to the tip of the support arm involves electrically connecting a coaxial cable connected to the input terminal of a tuner for satellite broadcast reception, for example, to the output terminal of the converter. In some cases, a connecting metal fitting is tightened and fixed to the tip of the support arm with a bolt, and an exterior part is tightened and fixed to this connecting metal fitting with a bolt.

<Problems to be Solved by the Invention> Generally, parabolic antennas are transported in a state in which the exterior part including the primary radiator and the converter and the support arm are separated so as not to be bulky during transport. For this reason, when assembling the parabolic antenna, the user must not only electrically connect the converter output terminal and the coaxial cable as described above, but also connect the exterior part and the support arm using connecting metal fittings. The assembly work was troublesome because they had to be fastened and connected with bolts.

The object of this invention is to provide a device that allows a primary radiator and a converter to be attached to a support arm with a single touch, and at the same time allows a coaxial cable to be connected to the output terminal of the converter.

<Means for Solving the Problems> In order to achieve the above-mentioned object, this invention has a distal end of a support arm whose proximal end is coupled to the side of the parabolic reflector and whose distal end extends toward the opening side of the parabolic reflector. In a device for attaching an exterior part including a primary radiator and a converter to a part, the support arm has a cylindrical tip and a locking part provided along the opening edge on the inner surface of the tip; an input terminal provided on the inner surface of the distal end portion, and the exterior portion includes an annular groove provided on the outer surface thereof into which the distal end portion of the support arm is inserted, and an input terminal provided on the outer surface of the exterior portion inside the annular groove. an output connector that is electrically connected to the converter and electrically connected to the input terminal when the tip of the support arm is inserted into the groove; a spring-made engagement part provided on the outer surface and engaged with a locking part of the support arm when the distal end of the support arm is inserted into the groove to maintain this inserted state; be.

The locking portion of the support arm is a protrusion provided along the opening edge on the inner surface of the distal end of the support arm, the engaging portion is a thin plate made of a spring, and the proximal end is a protrusion provided along the opening edge. The thin plate may be connected to the exterior part, and the tip side thereof may be bent into a concave shape so as to engage with the protrusion of the support arm on the surface of the thin plate.

Further, the locking part of the support arm is a through hole provided in the peripheral wall of the distal end, the engaging part is a thin plate made of a spring, the proximal end is connected to the exterior part, and the distal end is a thin plate made of a spring. It is also possible to form a bent portion in a letter shape, and enter the engaged state in a state in which the dogleg-shaped bent portion enters the through hole.

Further, the tip of the support arm is formed into a cylindrical shape whose cross section perpendicular to the cylindrical direction is other than circular, and the groove of the exterior portion is adapted to allow the tip of the support arm to be inserted. It is preferable that the support arm has a shape such that when the distal end of the support arm is inserted into the groove of the exterior part, the exterior part does not rotate relative to the support arm in the circumferential direction of the groove.

<Operation> In the primary radiator and converter mounting device configured as described above, when the exterior part and the support arm are connected from a separated state, the cylindrical tip of the support arm is connected to the exterior part. Push it in until the engaging part engages with the locking part in line with the annular groove provided on the outer surface of. Due to this engagement, the tip of the support arm is held so that it does not fall out of the groove in the exterior part, and the input terminal provided on the inner surface of the support arm and the output plug electrically connected to the converter are connected to each other. connected.

When separating the exterior part and the support arm from their combined state, pull the exterior part in the direction of pulling out the tip of the support arm from the groove in the exterior part, so that the engaging part and the locking part are engaged. , and then pull the exterior part away from the support arm. The connection state between the output connector and the input terminal can be disconnected by separating the engaging portion from the locking portion.

The engaging portion according to claim (2) is made of a spring, and the distal end side is bent into a concave shape, so that the distal end of the support arm is inserted into the groove of the exterior portion in order to attach the exterior portion to the support arm. As it goes, the engaging part comes into contact with the protrusion of the locking part, and the engaging part is slightly displaced inward along the protrusion. When the support arm is further inserted into the groove, the protrusion of the locking portion fits into the concave portion of the engaging portion, resulting in an engaged state. Then, in order to remove the exterior part from the support arm, when the tip of the support arm is pulled in the direction of pulling it out from the groove of the exterior part,
When the concave portion is displaced inward of the support arm along the convex surface of the protrusion and the support arm is further pulled away from the exterior portion, the concave portion rides over the protrusion and is disengaged.

Further, the engaging portion according to claim (3) is made of a spring, and the distal end side is bent in a dogleg shape.
When the distal end of the support arm is inserted into the groove of the exterior part in order to attach the exterior part to the support arm, the bent part of the engaging part fits into the through hole of the locking part and becomes engaged. Then, when the tip of the support arm is pulled in the direction of pulling it out from the groove of the exterior part in order to remove the exterior part from the support arm, the slope of the bent part is displaced inside the support arm along the periphery of the through hole. Further, when the support arm is pulled away from the exterior part,
The bent portion is disengaged from the through hole and disengaged.

Furthermore, since the distal end of the support arm according to claim (4) is formed into a cylindrical shape with a non-circular cross section perpendicular to the cylindrical direction, the distal end of the support arm is inserted into the groove of the exterior part. In this state, the exterior portion does not rotate relative to the support arm in the circumferential direction of the groove.

<Embodiment> A first embodiment of this invention will be described with reference to FIGS. 1 to 5 and 10. FIG. 10 is a diagram showing the external appearance of an offset parabolic antenna, in which an offset parabolic reflector 30 is attached to a support 40, and a back surface of the offset parabolic reflector 30 (hereinafter referred to as parabolic reflector 30) is shown. A support arm 10 whose base end is joined and whose distal end 10a extends toward the opening side of the parabolic reflector 30.
An exterior part 2, which includes a primary radiator 1 and a satellite broadcast receiving converter 6 (hereinafter referred to as converter 6) inside, is attached to the distal end 10a by the attachment device of the present invention.

As shown in FIGS. 1 and 3, the exterior portion 2 has a main body 3 having a substantially cylindrical outer shape, and a protrusion 21 is provided on the rear lower surface of the main body 3.
The protrusion 21 is formed into an elliptical columnar shape, and an elliptical annular groove 9 is bored in the lower surface thereof. Engaging portions are located at four locations in total: the position of the contour on the long axis of this ellipse inside the annular groove 9, and the position of the contour on the short axis separated by 90 degrees from this position along the contour. 13 are provided. The engaging portion 13 is a thin plate made of a spring, and as shown in FIG.
The base end 13a is screwed to the lower surface of the base end 13a.
It has a concave portion 13b extending from the groove 9 side toward the groove 9 side, and then has a concave portion 13b formed in the central portion in a concave shape with respect to the groove 9 side,
The tip has a convex portion 13c that is bent in a convex manner toward the groove 9 side. And this convex portion 13c
The convex surface of is formed so as to extend over the groove 9 by amm. Further, an output connector 8 is provided at the center of the lower surface of the protrusion 21, and the output connector 8 is connected to a relay terminal 12 which passes through a through hole passing through the protrusion 21.
a, electrically connected to the converter 6 via the connection terminal 7 and the connection line 12c.

As shown in FIG. 2, the support arm 10 has a cylindrical tip 10a, an elliptical cross section perpendicular to the cylindrical direction, and is inserted into an annular groove 9 provided in the exterior part 2. It is a shape that can be
A protrusion 5 is provided on the inner surface of the tip portion 10a along the opening edge, and this is a locking portion. This protrusion 5 has a shape that engages with the concave portion 13b of the engaging portion 13. Further, an annular groove 11 is provided along the top of the protrusion 5, and an elliptical plate member 14 shown in FIG. 5 is fitted into this groove 11. A recess opening upward is provided in the center of the elliptical plate member 14, and the input terminal 22 is mounted in this recess. A through hole is provided at the bottom of this recess, and the coaxial cable 12b led out from the input terminal 22 is routed to the base end side of the support arm 10 through this through hole. Note that by inserting the tip end 10a of the support arm 10 into the groove 9 of the exterior part 2, the input terminal 22 and the output connector 8 are connected with the concave part 13b of the engaging part 13 engaged with the protrusion 5. The input terminal 22 and the output connector 8 are formed to have a structure for electrical connection. Further, as shown in FIG. 5a, four notches 16 are provided at the periphery of the elliptical plate-shaped member 14. This notch 16 is formed when the distal end 10a of the support arm 10 is inserted into the groove 9 and the engaging portion 13 is engaged with the protrusion 5.
This is to prevent the tip of the engaging portion 13 from coming into contact with the elliptical plate member 14, and the engaging portion 13 engages with the protrusion 5 through this notch 16.

Since the mounting device for the primary radiator 1 and the converter 6 is constructed as described above, the exterior part 2 housing the primary radiator 1 and the converter 6 etc. is separated from the support arm 10 as shown in FIG. When joining from this state, the cylindrical tip portion 10a of the support arm 10 is inserted into the annular groove 9 provided in the exterior portion 2. As a result, the convex portion 13c at the tip of the engaging portion 13 comes into contact with the protrusion 5. Since the engaging portion 13 is made of a spring, the convex portion 13c is displaced inward along the protrusion 5, and as it is further inserted, the concave portion 13b of the engaging portion 13 engages with the protrusion 5. do. This engaged state is shown in FIG. Due to this engagement, the tip end 10a of the support arm 10 is held so as not to come out of the groove 9 of the exterior part 2, and the input terminal 22 provided on the inner surface of the support arm 10 via the elliptical plate member 14 and converter 6
The output connector 8 which is electrically connected to the output connector 8 is electrically connected to the output connector 8 . Note that since the support arm 10 has an elliptical cross-sectional shape perpendicular to the cylindrical direction, the exterior portion 2 does not rotate along the circumferential direction of the groove 9.

When separating the exterior part 2 from the state where it is coupled with the support arm 10, the support arm 10 is moved from the groove 9 of the exterior part 2 using a force capable of releasing the above-mentioned engaged state.
Pull apart the tip 10a. As a result, the concave portion 13b of the engaging portion 13 is displaced inside the support arm 10 along the protrusion 5, and when the exterior portion 2 is further separated from the support arm 10, the concave portion 13b climbs over the protrusion 5 and engages. The alignment is off. When the engaging portion 13 is separated from the protrusion 5, the output connector 8 and the input terminal 2
The electrical connection with 2 is cut off.

A second embodiment will be described with reference to FIGS. 6 to 9. The engaging portion 26 provided on the exterior portion 2 is
It is a thin plate made of spring, and is bent into a dogleg shape. As shown in FIG. 7, the engaging portion 26 is provided on the periphery of the flat plate 24 having an elliptical planar shape, with the bent portion facing outward and protruding downward at approximately right angles to the plate surface. They are provided at a total of four locations on the major axis line and the minor axis line. This elliptical flat plate 24 is attached to the lower surface of the protrusion 21 as shown in FIG. are screwed together, and the output connector 8 and the exterior part 2
It is tightened and fixed to the underside of the. Reference numeral 25 shown in the figure is a peripheral wall portion, which is provided to protrude from the lower surface of the protruding portion 21 along the outer periphery of the opening of the annular groove 9. Through holes 2 are formed in four locations on the side surface of the peripheral wall portion 25 at positions corresponding to the dogleg-shaped bent portions of the engaging portion 26.
7 is provided, and the engaging portion 2 is provided in this through hole 27.
The dogleg-shaped bent part 6 is slightly tucked in.

The locking portions are four through holes 28 provided in the peripheral wall of the distal end portion 10a of the support arm 10. These four through holes 28 are located at the tip 10a of the support arm 10.
When inserted into the groove 9, the output connector 8 and the input terminal 22
The bent portion of the engaging portion 26 is provided at a position where the bent portion of the engaging portion 26 is engaged in a state where the two are electrically connected. An elliptical flat plate 29 is fixed to the peripheral wall of the support arm 10 with screws below the four through holes 28 . A through hole 29a is provided in the center of this elliptical flat plate 29, and the input terminal 32 is inserted through the through hole 29a. The input terminal 32 has a flange 32a at the bottom, which is connected to the flat plate 2.
9 and is fixed to the flat plate 29 by screwing a nut 29c into a male screw provided on the peripheral surface of the input terminal 32. A coaxial cable 31 is electrically connected to this input terminal. In addition,
Notches 33 provided at four locations on the outer circumference of the elliptical flat plate 29 prevent the tip of the engaging portion 26 from coming into contact with the elliptical flat plate 29 when the tip 10a of the support arm 10 is inserted into the groove 9. It is something to do.

The other parts are the same as those in the first embodiment, so their explanation will be omitted.

As shown in FIG.
When combining the support arm 10 from a separated state, the tip end 10a of the support arm 10 is aligned with the annular groove 9 provided on the lower surface of the exterior part 2, and inserted into this groove 9. As a result, the dogleg-shaped bent portion of the engaging portion 26 is displaced inward by the opening edge at the tip of the support arm 10, and when the support arm 10 is further inserted, the engaging portion 26
The bent portion 6 enters the through hole 28 of the locking portion and becomes engaged. This engaged state is shown in FIG. In this engaged state, the tip end 10a of the support arm 10 is held so as not to come out of the groove 9 of the exterior part 2, and the input terminal 32 and the output plug 8 are electrically connected. Note that since the support arm 10 has an elliptical cross-sectional shape perpendicular to the cylindrical direction, the exterior portion 2 does not rotate along the circumferential direction of the groove 9.

When separating the exterior part 2 from the state where it is combined with the support arm 10, the exterior part
pull. As a result, the dogleg-shaped bent portion of the engaging portion 26 is displaced inside the support arm 10 along the edge of the through hole 28 of the locking portion, and when the support arm 10 is further pulled away from the exterior portion 2, the bent portion is removed from the through hole 28. Then, by removing the exterior part 2 from the support arm 10, the output connector 8 and the input terminal 32 are connected to each other.
It is also possible to disconnect from the electrical connection.

<Effects of the invention> As described above, according to this invention, by inserting the cylindrical tip of the support arm into the groove of the exterior part and engaging the engaging part with the locking part, This has the advantage that the exterior part including the primary radiator and the converter can be easily mechanically attached to the tip of the support arm, and the converter and the coaxial cable can be electrically connected at the same time.

In addition, with the tip of the support arm inserted into the groove of the exterior part, the exterior part does not rotate relative to the support arm in the circumferential direction of the groove, so that the primary radiator can be used as a parabolic reflector. This has the advantage that it can be attached in a predetermined direction.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view showing the exterior part of the first embodiment of the present invention attached to a support arm, and FIG. 2 is a longitudinal sectional front view showing the exterior part of the first embodiment removed from the support arm. , FIG. 3 is a bottom view showing the lower surface of the exterior part of the first embodiment, FIG. 4 is an enlarged front view showing the engaging part of the first embodiment, and FIGS. 5 a and b are inputs of the first embodiment. Plan view and vertical sectional front view of an elliptical plate-shaped member for attaching a terminal to a support arm, No. 6
The figure is a partial longitudinal sectional front view showing the exterior part of the second embodiment removed from the support arm, FIG. 7 is a plan view showing a flat plate provided with the engaging part of the second embodiment, and FIG. FIG. 9 is a plan view showing a flat plate for attaching the input terminal of the second embodiment, FIG. 9 is a partial vertical front view showing the exterior part of the second embodiment attached to the support arm, and FIG. 10 is a plan view of the offset parabolic antenna. FIG. 1...Primary radiator, 2...Exterior part, 5...Protrusion (locking part), 6...Converter, 8...Output connector,
10... Support arm, 13, 26... Engaging portion, 2
2, 32...Input terminal, 28...Through hole (locking part), 30...Offset parabolic reflector.

Claims (1)

[Claims for Utility Model Registration] (1) A primary radiator and a converter are attached to the distal end of a support arm whose base end is connected to the parabolic reflector side and whose distal end extends toward the opening side of the parabolic reflector. The supporting arm has a cylindrical distal end, a locking portion provided along the opening edge on the inner surface of the distal end, and an input terminal provided on the inner surface of the distal end. The exterior part has an annular groove provided on its outer surface into which the tip of the support arm is inserted, and an annular groove provided on the outer surface of the exterior part inside the annular groove and electrically connected to the converter. an output connector that is electrically connected to the input terminal when the tip of the support arm is inserted into the groove; and an output connector that is provided on the outer surface of the exterior part inside the annular groove and the tip of the support arm. a spring-made engagement part that engages with a locking part of the support arm to maintain this inserted state when the part is inserted into the groove; Device. (2) The locking part of the support arm is a protrusion provided along the opening edge on the inner surface of the tip of the support arm, the engaging part is a thin plate made of a spring, and the base end is a ridge formed along the opening edge. The primary radiator according to claim 1, wherein the primary radiator is connected to the exterior part and is bent in a concave shape so that the tip side thereof engages with the protrusion of the support arm on the plate surface of the thin plate. and converter mounting equipment. (3) The locking part of the support arm is a through hole provided in the peripheral wall of the distal end, and the engaging part is a thin plate made of a spring, the proximal end is connected to the exterior part, and the distal end is a thin plate made of a spring. The primary radiator and converter according to claim (1), wherein the primary radiator and converter are bent in a dogleg shape, and are engaged when the doglegged bent portion enters the through hole. Mounting device. (4) The tip of the support arm is formed into a cylindrical shape with a non-circular cross section perpendicular to the cylindrical direction, and the groove in the exterior part is designed to allow the tip of the support arm to be inserted. The support arm has a shape such that when the distal end of the support arm is inserted into the groove of the exterior part, the exterior part does not rotate relative to the support arm in the circumferential direction of the groove. The primary radiator mounting device according to claim (1).