JPH071866Y2 - Feed integrated SHF converter device - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) The present invention relates to a feed-integrated SHF converter device, in which the converter case and the fidome are more completely sealed, and screws are used. The present invention relates to a feed-integrated SHF converter device having a structure that can be easily integrated regardless of the above work.

(Prior Art) In recent years, SHF receiving systems for receiving satellite broadcast waves using the SHF band have come to be used in ordinary homes.

The SHF receiving system can receive by installing a parabolic antenna and an SHF converter outdoors and installing a dedicated tuner indoors. The primary radiator (hereinafter referred to as feed) and SHF converter in the parabolic antenna
It may be integrally formed or may be coupled via a waveguide. In this specification, a feed-integrated SHF converter device in which the feed and the SHF converter are integrally configured will be described.

4 and 5 show a conventional example of an integral type SHF converter device, FIG. 4 is a sectional view, and FIG. 5 is an exploded perspective view. In the SHF converter 41 shown in these figures, a case 43 of the converter accommodates a chassis 43 to which a printed circuit board having a micro-amplification circuit is attached. A flange member 44 is fitted on the opening side in the case 42. Furthermore,
A fidome 45 for sealing the inside of the case 42 is attached to the flange member 44.

As for the flange member 44 and the case 42, a gasket 46 is attached to the outer periphery of the flange member 44 as shown in an exploded view in FIG. 5, and the flange member 44 is pressed inside the opening of the case 42 to open the case 42. A sealing property between the inner wall of the part and the flange member 44 is achieved. Further, the fidome 45 and the flange member 44 are
The screw 48 is screwed in from the side of the fidome to be fitted, and the O-ring 47 is sandwiched therebetween. As a result, the fidome 45 and the flange member 44 are sealed.
Although only one screw 48 is shown in FIG. 5, many screws 48 are provided.

In addition, the case 42 is provided with a connector 49 called an F-shaped connector. As shown in FIG. 5, the plug 49 is inserted from the opening side of the case 42 and is fixed by a nut 52 using a hole formed on the side surface opposite to the opening side. In this case as well, the sealing property between the case 42 and the plug 49 is O.
Taken in ring 50.

The chassis 43 is fixed to the flange member 44 with screws 51.

The above-mentioned conventional apparatus is roughly divided into a case 42, a chassis 43, a flange member 44, a fidome 45 and a plug 49. Of these, because of the nature of being left outdoors, the places that require airtightness against the atmosphere are between the flange member 44 and the case 42,
Between the flange member 44 and the fidome 45, the chassis 43 and the plug 49
You need three places in between. Further, since the flange member 44 is exposed to the outside, the exposed portion of the flange member 44 needs to be painted.

Further, the fidome 45 and the flange member 44 are attached by screws, and the O-ring 47 is sandwiched between them to seal the fidome 45.
Must be removed, which complicates the work process of removing the fidom.

FIG. 6 shows another conventional example of the integrated SHF converter device.

The SHF converter 61 shown in this figure is a converter case 62.
A chassis 63 having a printed circuit board mounted therein is housed.
A flange member 64 is fitted on the opening side of the case 62, and a fidome 65 that seals the inside of the case is attached to the opposite side of the flange member 64 from the case 62.

A plate packing is provided between the flange member 64 and the case 62.
Sealed at 66. In this case, the plate packing 66 is sandwiched between the flange member 64 and the case 62. Then, the screw 68 is screwed in from the side of the fidome to connect the flange member 64 and the case 62. Also fidom
The 65 and the flange member 64 are fitted with one touch, and the gasket 67 is sandwiched therebetween. Then, use the fidome retainer 72 to attach the fidome 65 to the flange member 64.
It is fixed to.

In addition, the case 62 is provided with a connector 69 called an F-shaped connector. As shown in FIG. 6, the plug 69 is inserted from the opening side of the case 62 and is fixed by a nut 74 using a hole formed in the lower surface of the case 62.
Also in this case, the sealing property between the case 62 and the connector 69 is O-ring 70.
Is going by.

The chassis 63 is fixed to the flange member 64 with screws 71. In this case, in order to prevent leakage from the fidome side, a waterproof film should be placed between the flange member 64 and the chassis 63.
73 is sandwiched.

The above-mentioned conventional apparatus is roughly divided into a case 62, a chassis 63, a flange member 64, a fidome 65 and a plug 69. Of these, three are required between the flange member 64 and the case 62, between the flange member 64 and the fidome 65, and between the case 62 and the stopper 69, because of the nature of being left outdoors and requiring airtightness. Become. Further, the exposed portion of the flange member 64 needs to be painted.

(Problems to be Solved by the Invention) In the above-described conventional integral type SHF converter device, two places that require air tightness to the atmosphere are required between the flange member and the case and between the flange member and the fidome.
Further, since the flange member is exposed to the outside, the exposed portion of the flange member needs to be painted.

Therefore, an object of the present invention is to provide a feed-integrated SHF converter device which eliminates the above-mentioned problems, has a small number of places where airtightness is required, and does not require painting of a flange member.

[Configuration of the Invention] (Means for Solving the Problems) The present invention relates to a feed-integrated SHF converter device in which a fidome is detachable, a chassis integrally provided with a flange member, and a relationship between the flange member and the fidome. A fidome having mating means formed thereon, and engaged means formed on the flange member corresponding to the engaging means,
It is characterized by comprising a case that accommodates the chassis inside and fits into the fidome in a state in which the flange is engaged with the fidome, and an airtight member provided between the fidome and the case.

(Operation) According to such a configuration, the portion requiring air tightness is located between the flange member and the case and between the flange member and the fidome.
From one place to one between the case and the fidom.
Further, since the flange member is integrally formed with the frame and is sealed from the outside by the fidome, the case and the airtight portion, it is not necessary to paint the flange member.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 are feed-integrated SHF according to the present invention.
1 shows a converter device. FIG. 1 is a sectional view, FIG. 2 is an exploded perspective view, and FIG. 3 is an explanatory view showing a mounting process.

In these drawings, reference numeral 11 is a feed-integrated SHF converter device, and the chassis 13 and the flange member 14 are integrated. Substrates 21,22, shield plates 23,23 ', and shield covers 24,24' are mounted on the chassis 13. Further, an insulating sleeve 25, an insulating washer 26 and a helical coil 27 are mounted on the flange member 14. Then, the chassis 13 and the flange member 14 are housed in the converter case 12. In case 12,
A fidome 15 for sealing the inside of the container is fitted on the opening side.

The fidome 15 and the case 12 are O as an airtight member.
Sealing is achieved by ring 17. In this case O-ring 17
Is attached to the outer circumference of the fidome 15 and presses the fidome 15 inside the opening of the case 12 to achieve the airtightness between the inner wall of the opening of the case 12 and the outer circumference of the fidome 15. Also case
A connector 19 called an F-shaped connector is attached to 12. As shown in FIG. 2, the plug 19 is inserted from the opening side of the case 12, and is fixed by a nut 18 using a hole formed on the side surface opposite to the opening side. In this case as well, the O-ring 20 seals the case 12 and the plug 19 together.

FIG. 3A shows the flange member 14 and the fidome 15 before the fidome 15 is attached to the flange member 14 of the chassis 13.
In the fidome 15, locking claws 28 and 29 as engaging means are formed on the edge 15a of the opening. On the other hand, on the outer periphery of the flange member 14, there is formed a cylindrical projection 30 as an engaged means formed at a position corresponding to the locking claws 28 and 29.

The locking claws 28, 29 have contact surfaces 28a, 29a and flat contact surfaces 28b, 29b having the same shape as part of the circumference of the protrusion 30,
The distance between the contact surfaces 28b, 29b and the edge 15a is smaller than the diameter of the protrusion 30. The locking claw 29 and the locking claw 28 are the same as those of the fidome 15.
Are formed so as to be line symmetric with respect to the center line of the. The locking claws 28, 29 are made of an elastic material.

The fidome 15 and the flange member 14 as described above are engaged with the locking claws 28, 2
Fit the 9 and the protrusions 30, 30 so that they do not touch each other. This state is shown in FIG. 3 (b).

After that, when the fidome 15 is rotated clockwise, as shown in FIG. 3 (c), the projections 30, 30 are engaged with the engaging claws 28, 29, and the projections 30, 30 and the contact surface 28a. , 29a contacts. Furthermore, since the width between the contact surfaces 28b, 29b and the edge 15a is smaller than the diameter of the protrusion 30, the fidome 15 is fixed to the flange member 14. As a result, the fidome 15 is attached to the feed-integrated SHF converter device body including the chassis 13 and the case 12.

On the other hand, when the fidome 15 is to be removed from the feed-integrated SHF converter device body, the fidome 15 may be rotated counterclockwise and then pulled out.

In the feed-integrated SHF converter device of the above-described embodiment, the members are roughly classified into a case 12, a chassis 13, and a flange member 1.
4, Consists of fidome 15 and plug 19. Of these, places that require air tightness due to the nature of being left outdoors are
Since there are two places between the fidome 15 and the case 12 and between the case 12 and the plug 19, the number of places requiring air tightness is reduced as compared with the conventional one.

Further, since the frame member 14 is not exposed to the outside, the flange member 14 does not need to be painted.

[Advantage of the Invention] As described above, according to the present invention, the feed-integrated SHF
Where airtightness of the converter device is required,
There is an effect that it is reduced as compared with the conventional one and that the flange member does not require painting.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of an SHF converter device of the feed integrated type according to the present invention, FIG. 2 is an exploded perspective view of the device of FIG. 1, and FIG. 3 is a fidome attachment of the device of FIG. FIG. 4 is a sectional view showing a conventional feed-integrated SHF converter device, FIG. 5 is an exploded perspective view of the device shown in FIG. 4, and FIG. 6 is a sectional view showing another conventional device. Is. 12 …… Case, 13 …… Chassis, 14 …… Flange member,
15 …… Fidom, 15a …… Margin, 17,20 …… O ring,
19 ... Plug, 29 ... Locking claw, 30 ... Projection.

Claims (1)

[Scope of utility model registration request] 1. A feed-integrated SHF converter device having a detachable fidome, a chassis integrally provided with a flange member, a fidome having engaging means for engaging with the flange member, and the engaging means. Corresponding to the engaged member formed on the flange member, a case that accommodates the chassis inside and fits into the fidome with the fidome engaged with the flange member, and between the fidome and the case A feed-integrated SHF converter device comprising: an airtight member provided.