JPH0453054Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a communal listening device used as a distributor etc. for distributing and connecting a cable from one antenna to multiple television receivers, and particularly relates to a housing. This invention relates to a public listening device characterized by the structure of an F-type male connector attached to the device.

[Technical background of the invention and its problems]

Common listening equipment such as televisions usually has a structure in which a printed wiring board is placed inside a housing that has a high frequency shielding function, and male and female connectors for coaxial cable connection are attached to the outer wall of the housing. ing.

FIG. 5 is a schematic cross-sectional view showing an example of conventional public listening equipment. In the figure, reference numeral 11 denotes a housing, and a wiring board 12 is fixedly installed in this housing 11. Connected to this wiring board 12, a male center conductor 13 and a female center conductor 14 are connected to an insulator 19, respectively. It is held in the housing 11 via. A male connector 16 having a female threaded portion 15 is provided on the outside of the male center conductor 13, and a female connector 18 having a male threaded portion 17 is provided on the outside of the female center conductor 14. These male connectors 1
6 and the female connector 18 are either integrally molded with the housing 11 or are fixedly attached to the housing 11.

Therefore, when connecting the male connector 16 to a female connector fixed to another public listening device, it is necessary to rotate the entire housing relative to the other public listening device, which makes the connection work troublesome. Along with that,
There is a drawback that the orientation of the casing is not constant after connection. Furthermore, if other communal listening equipment is fixed, the casing itself must be rotated, making the work difficult.

FIG. 6 is a schematic sectional view showing another example of conventional public listening equipment. In this example, male connector 2
A spring member 22 is attached to the inner circumferential wall surface of the device 1 in place of a female threaded portion, and the device has a push-on type structure to which a female connector of another public listening device can be connected by pushing. With this structure, connection work is easy, but the connection retention force is weak, and if the public listening equipment is heavy or the cable is connected and the weight increases, it may bend or come off at the connection part. Sometimes. Another drawback is that the connection will come off if your foot gets caught on the cable.

[Purpose of invention]

The present invention was developed with these points in mind, and it is possible to easily connect a male connector to a female connector while fixing the respective housings to which the male connector and female connector are attached in one direction. The purpose is to provide communal listening equipment that allows for

[Summary of the idea]

The present invention is a public listening device in which circuit components are arranged inside a housing, and an F-type male connector is provided on the outer wall of the housing for connecting to an F-type female connector provided on another device. The F type male connector is
The device is characterized in that it includes a rotating member rotatably attached to the outer wall of the casing and protruding from at least one outer wall surface of the casing.

According to the present invention, the F-type male connector can be rotated using the rotating member, and the F-type male connector can be easily connected to other devices while keeping the housing of the communal listening device facing a certain direction. can be connected to.

[Example of idea]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an external perspective view showing an embodiment of a communal listening device according to the present invention, and FIG. 2 is a schematic side sectional view thereof. In the figure, the reference numeral 31 is a casing, and circuit components such as a wiring board 32 are disposed within the casing 31. Both side end walls of the housing 31 are provided with openings through which the male center conductor 33 and the female center conductor 34 are inserted, and the male center conductor 33 and the female center conductor 34 are fixed and held through an insulator 35, respectively. has been done. A cylindrical boss 36 having a large-diameter flange portion 36a formed at its tip is provided in the opening through which the male center conductor 33 is inserted to protrude outward from the housing 31. For this cylindrical boss 36, there is a hollow cylindrical nut portion 38 with a female threaded portion 37 formed therein.
An F-type male connector 40 consisting of a disc-shaped rotating member 39 integrally formed around the outer periphery of the nut portion 38 is attached. An engagement piece 41 is formed at one end of the nut 38 and bent inward by caulking or the like, and by engaging with the large diameter flange 36a of the cylindrical boss 36, the nut 38 can be attached to the cylindrical boss 36. One end of 38 is attached in a rotatable and secured manner.

The disc-shaped rotation member 39 has a diameter large enough to protrude outward from the upper and lower wall surfaces 31a and 31b of the housing 31, and has an uneven portion 39a formed around its outer periphery. In this embodiment, the size of the rotating member 39 is such that it protrudes from the upper and lower wall surfaces 31a and 31b.
It is sufficient if it is provided so as to protrude from at least one outer wall surface, such as from the side wall surface 31c.

Housing 31 holding female center conductor 34
A male threaded portion 42 is provided on the side end wall of the conductor 34 so as to be concentric with the center conductor 34 and protrude outward.

A pair of protrusions 43 are fixed outwardly on the side end wall to which the F-type male connector 40 is attached.

FIG. 3 is a side sectional view showing a state in which the communal listening device 30 according to this embodiment having such a configuration is connected to another communal listening device 50. The connection between the F-type female connector protruding from the side end wall of the housing 51 of the other public listening device 50 and the F-type male connector 40 according to this embodiment is first performed using the male screw portion 52 of the F-type female connector.
is advanced toward the female threaded portion 37 of the nut portion 38, and the rotating member 39 is rotated. This results in
The nut portion 38 is rotated and moved to the right in FIG. 3, while being screwed into the male threaded portion 52. Either the engagement piece portion 41 abuts the large diameter flange portion 36a of the cylindrical boss 36, or the tip of the male threaded portion 52 contacts the cylindrical boss 36.
When the nut portion 38 comes into contact with the large diameter flange portion 36a, the movement of the nut portion 38 is stopped, and the threaded engagement between the female thread portion 37 and the male thread portion 52 is completed. At this time, the male center conductor 33 of one public listening device 30 is replaced by a female center conductor (not shown) held in the male screw portion 52 of the other public listening device 50 via an insulator.
inserted and connected to. This completes the work of connecting one communal listening device 30 to the other communal listening device 50 using the F-type male connector 40. The pair of protrusions 43 come into contact with the casing 51 of another communal listening device 50 while the rotating member 39 is rotating, thereby preventing the casing 31 itself from rotating together and keeping the connection direction constant. useful for.

In this way, according to this embodiment, the rotating member 3
9 rotates the nut portion 38 of the F-type male connector 40, and
Can be connected with type female connector. The rotating member 39 is attached to the upper and lower wall surfaces 31a and 31b of the housing 31.
Since it protrudes outward, even if the space between the casings 31 and 51 is narrow, it can be easily rotated without being hindered by the casings 31 and 51. Further, since the rotation member 39 has irregularities around its outer periphery, this rotation operation is easy to perform. Furthermore, since there is no need to rotate the housing 31, the connecting direction of the housing 31 can always be kept constant, and even if other members are connected to the male threaded portion 42, the work can be performed as is. connection work is easy. Furthermore, the separation work can be easily performed.

FIG. 4 is a partial side sectional view showing another embodiment of the present invention.

In the figure, reference numeral 61 is a housing, and this housing 6
A wiring board 63 is fixedly disposed within 1. One outer wall 61a of the housing 61 has a circular opening 6.
5 is bored, and a vertical wall 67 is formed in a direction perpendicular to the axis of the opening 65 at a position a predetermined distance into the housing from the opening 65.

Reference numeral 71 indicates a nut body having a substantially hollow cylindrical shape constituting an F-type male connector;
A female threaded portion 71a is formed on the inner circumferential portion of 1. The nut body 71 is inserted and held within the housing 61 with one end protruding from the opening 65 of the housing 61. The diameter of the opening 65 is slightly larger than the diameter of the insertion portion of the nut body 71. A nut body rotating member, for example, a ring 73 made of plastic, is fitted onto the outer periphery of one end of the nut body 71, which is located at a position protruding outward from the housing outer wall 61a. In addition, the housing outer wall portion 61a
A nut body retaining member 75 is attached to the outer periphery of the other end of the nut body 71 located between the vertical wall 67 and the nut body 71 . The retaining member 75 is fitted into a groove 77 having a predetermined width formed on the outer periphery of the other end of the nut body 71 so as to be slidable in the axial direction. Further, it is desirable that the retaining member 75 is a plate member having elasticity.

A center conductor 79 is provided on the vertical wall 67 of the housing 61.
perpendicular to the vertical wall 67 and toward the opening 65,
It is fixedly held via an insulator 81. The rear end of the center conductor 79 is connected to the printed wiring board 63, and the tip extends to the entrance side of the nut body 71. Reference numeral 82 is a positioning protrusion.

In this embodiment, when the F-type male connector is connected to another female connector, the retaining member 75
comes into contact with the inner surface of the outer wall portion 61a and is slightly elastically deformed. This makes the screwing of the threaded portion strong and prevents loosening.

[Effect of idea]

As explained above, according to the present invention, since the F-type male connector is rotatably attached to the outer wall of the housing, it is possible to keep the housing of the public listening equipment facing a certain direction while connecting the F-type male connector to the other equipment. Can be connected to a type female connector. Moreover, since a part of the rotating member is attached to protrude from at least one outer wall surface of the casing, the connection work can be easily performed without being obstructed by the casing.

The present invention can be used as a public listening device such as a television, such as a distributor or branch, to
Particularly effective.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view showing an embodiment of a communal listening device according to the present invention, Fig. 2 is a schematic side sectional view thereof, and Fig. 3 is a schematic side sectional view thereof.
The figure is a schematic side sectional view showing the state of connection between the communal listening device according to the present invention and other communal listening devices, FIG. 4 is a partial side sectional view showing another embodiment of the present invention, and FIGS.
The figure is a side sectional view showing a conventional public listening device. 31... Housing, 33... Male center conductor, 38
... Nut part, 39 ... Rotating member, 40 ... F
type male connector.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A common device in which a circuit component is disposed within a housing, and an F-type male connector is provided on the outer wall of the housing for connection to an F-type female connector provided on another device. In the hearing device, the F-type male connector has a substantially hollow cylindrical shape with a female threaded portion formed inside, and is rotatable relative to the outer wall of the casing at a position where the female threaded portion is disposed inside the casing. A rotating member is attached to the housing and is provided outside the housing so as to protrude from at least one outer wall surface of the housing, and a rotating member that is in contact with the inner wall surface of the housing inside the housing and is attached to the outer periphery of the F-type male connector. A communal listening device comprising a retaining member slidably fitted within a predetermined distance in an axial direction. 2. The communal listening device according to claim 1, wherein the rotating member is integrally formed with an F-type male connector. 3. The communal listening device according to claim 1, wherein the rotating member is fitted around the outer periphery of the F-type male connector. 4. The communal listening device according to claim 1 of the utility model registration, characterized in that the rotating member has irregularities formed on its outer periphery.