JP6854434B2 - TV outlet - Google Patents

Description

The present invention relates to a television outlet that is provided on an indoor wall surface or the like and supplies an antenna reception signal to a television receiver.

The antenna reception signal is supplied from the TV antenna to the TV outlet provided on the wall surface or the like indoors via the input side coaxial cable, and the antenna reception signal is supplied from the TV outlet to the TV receiver via the output side coaxial cable. To.

In recent years, with the ultra-high definition of television broadcasting, the IF frequency band of the received signal supplied to the television outlet has been widened to 3.224 GHz. However, since this band overlaps with the band of other communication services such as wireless LAN, noise due to interference is likely to occur.

Patent Document 1 discloses a television outlet having a configuration in which an input-side coaxial cable to which a received signal is supplied from a television antenna is connected without using an F-type plug. In this TV outlet, a housing for accommodating a connection fitting for electrically connecting an input side coaxial cable and an output side coaxial cable is formed in a box shape by bending a metal plate.

Japanese Unexamined Patent Publication No. 2001-135433

In the TV outlet disclosed in Patent Document 1, since the core wire of the input side coaxial cable and the terminal fitting electrically connected to the core wire are not electromagnetically shielded, they may interfere with the electromagnetic waves of other communication services. It is easily affected by the generated noise.

If the input side coaxial cable is connected to the TV outlet using the F-type plug, the shielding property will be improved, but the housing and the F-type plug will be integrally formed by die-casting, which requires labor for processing. There's a problem. In addition, the work of screwing the F-type plug to the TV outlet during construction becomes complicated.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a television outlet which is easy to install and can secure a shielding property against external noise.

A TV outlet that solves the above problems is a mounting piece formed on both sides of a mounting shaft to which an F-type plug of the output side coaxial cable is connected and a first surface provided with the mounting shaft, and each of which projects laterally. The metal housing having the above, the metal lid member rotatably supported by the housing, the core wire of the input side coaxial cable, and the core wire of the F-shaped tangent wire of the output side coaxial cable are electrically connected. The mounting shaft and the mounting piece are integrally formed of metal, and the terminal fitting has a spring piece to which the core wire of the input side coaxial cable is connected, and the spring. The piece is located on the side opposite to the mounting shaft with respect to the first surface, and the spring piece is located outside the projected region of the mounting shaft in the axial direction of the mounting shaft.

According to the TV outlet of the present invention, the workability and the shielding property against external noise are improved.

It is a perspective view which shows the television outlet of one Embodiment. It is a perspective view which shows the television outlet of one Embodiment. It is an exploded perspective view which shows the TV outlet of one Embodiment. It is a perspective view which shows the housing. It is a perspective view which shows the lid member. It is a side view which shows the state which opened the lid member. It is a rear view which shows the television outlet of one Embodiment.

Hereinafter, an embodiment of the TV outlet will be described with reference to the drawings. The television outlets shown in FIGS. 1 to 3 include a housing 1 that houses a terminal fitting for electrically connecting an input-side coaxial cable and an output-side coaxial cable, and a lid member 2 that covers an opening of the housing 1. Be done.

As shown in FIG. 4, the housing 1 is integrally formed in a long square box shape by zinc die casting, and is opened toward one side. When the TV outlet is mounted on the wall surface, the housing 1 is mounted so as to open toward the outdoor side. The upper side 3 of the housing 1 and the upper portion of the side side 4 connected to both sides of the upper side 3 extend toward the outdoor side.

A cylindrical mounting shaft 6 is projected from the other side surface of the housing 1, that is, the side surface facing the indoor side, and a screw 7 is engraved on the outer peripheral surface of the mounting shaft 6 to screw an F-shaped plug. It is possible to match. The through hole 8 formed in the central portion of the mounting shaft 6 communicates with the inside of the housing 1.

Mounting pieces 9 projecting sideways are formed on the side sides 4 of the housing 1, and are fixed to the wall surface via the mounting pieces 9.
A separator 10 formed of a synthetic resin in a substantially plate shape is attached to the housing 1. The separator 10 is formed with a tubular portion 11 projecting indoorward toward the inside of the mounting shaft 6, and as shown in FIG. 2, the tip of the tubular portion 11 is exposed in the through hole 8 of the mounting shaft 6. ing. An insertion hole 12 is formed in the central portion of the tubular portion 11 so that the core wire of the output side coaxial cable Co can be inserted.

A plurality of locking convex portions 13 project toward the outdoor side on one side of the lower edge of the separator 10, and the terminal fitting 14 is supported by the locking convex portions 13. A first spring piece 15 capable of sandwiching the core wire of the input side coaxial cable Ci inserted from below and a core wire of the output side coaxial cable Co inserted from the indoor side can be sandwiched between the terminal fittings 14. The second spring piece 16 is formed.

The tip of the second spring piece 16 is inserted into the tubular portion 11 of the separator 10, and the core wire to be inserted into the insertion hole 12 can be sandwiched.
The base portion of the terminal case 17 molded of synthetic resin is fitted to the locking convex portion 13 of the separator 10. A rectangular parallelepiped terminal accommodating portion 18 is formed on one side of the terminal case 17, and the first spring piece 15 of the terminal fitting 14 is accommodated in the terminal accommodating portion 18. Further, an insertion hole 19 is formed on the upper surface of the terminal accommodating portion 18 so that the core wire of the input side coaxial cable Co can be inserted. Since the terminal fitting 14 for connecting the input side coaxial cable Ci is covered with the terminal case 17, it is possible to prevent a short circuit between the core wire and the braided wire of the input side coaxial cable Ci.

A terminal plate 20 is attached to the housing 1 so as to cover the separator 10 housed in the housing 1 and the base portion of the terminal case 17. The terminal plate 20 is formed of an iron plate, and is fixed to the corners of the opening of the housing 1 by the through holes 21 formed at the four corners. The terminal case 17 is formed with a groove 22 through which the terminal accommodating portion 18 can be inserted so that the terminal accommodating portion 18 protrudes from the terminal plate 20 to the outdoor side.

A ridge 23 extending in a direction orthogonal to the insertion direction of the core wire into the terminal accommodating portion 18 is formed in the central portion of the terminal plate 20.
The lid member 2 is integrally formed by zinc die-casting so as to cover the opening of the housing 1. The peripheral edge of the lid member 2 is formed so as to be in close contact with the peripheral edge of the opening of the housing 1. Support shafts 24 projecting laterally are formed on both sides of the upper edge portion of the lid member 2.

On the side 4 of the housing 1, support grooves 25 capable of holding the support shaft 24 are formed in the vicinity of both ends of the upper side 3. The lid member 2 is rotatably supported by the housing 1 with the support shaft 24 as a rotation fulcrum in a state where the support shaft 24 is held in the support groove 25.

As shown in FIG. 1, the support groove 25 has a groove portion that rotatably supports the support shaft 24, and an opening that communicates with the groove portion and has a width smaller than the width of the groove portion and the diameter of the support shaft 24. Since the width of the opening is smaller than the diameter of the groove and the support shaft 24, it is possible to prevent the support groove 25 of the support shaft 24 from falling off from the groove. Further, since the space between the groove and the opening of the support groove 25 is filled by inserting the support shaft 24, the electromagnetic shielding property of the television outlet can be improved. The shape of the support groove 25 is not limited to the above shape.

At the lower edge of the lid member 2, a holding recess 26 is opened at a position communicating with the insertion hole 19 of the terminal accommodating portion 18. The holding recess 26 is formed in a semi-circular cross section by forming a curved portion 26a in the lid member 2.

As shown in FIGS. 2 and 5, a retaining protrusion 34 is formed on the back surface of the curved portion 26a facing the holding recess 26 in the vicinity of the opening of the holding recess 26. By providing the retaining protrusion 34 in the vicinity of the opening of the holding recess 26, it is possible to prevent the holding recess 26 from coming off from the opening when the input side coaxial cable Ci is pulled, for example.

Then, when the core wire of the input side coaxial cable Ci is inserted into the insertion hole 19 of the terminal accommodating portion 18 with the lid member 2 open, and the lid member 2 is rotated and closed in this state, the input side coaxial cable Ci is opened. The lid member 2 is sandwiched and held between the terminal plate 20 and the opening edge of the housing 1 in the holding recess 26.

A through hole 28 through which a screw 27 can be inserted is formed in the central portion of the lid member 2. Further, the terminal plate 20 is provided with a screw hole 29 at a position communicating with the through hole 28. Then, when the screw 27 is screwed into the screw hole 29 from the through hole 28 with the lid member 2 closed, the lid member 2 is fixed to the terminal plate 20 and the round shaft-shaped input side coaxial cable Ci is always formed. It is crushed in the holding recess 26 so that the holding recess 26 is substantially sealed.

As shown in FIG. 5, a plurality of protrusions 30 are formed at equal intervals on the upper edge of the lid member 2. Then, as shown in FIG. 7, when the lid member 2 is closed, the gap between the upper edge of the lid member 2 and the upper side 3 of the housing 1 is closed by the protrusions 30 at equal intervals. ..

When the gap is closed by the protrusions 30 in this way, radio waves having a frequency at which the distance between the protrusions 30 is 1/10 to 1/20 of the wavelength or lower, that is, the input side coaxial cable Ci is transmitted. A shielding effect against electromagnetic waves that can generate noise in the TV reception signal can be obtained. Further, by providing the protrusion 30, the upper edge of the lid member 2 can be brought into contact with the upper side of the housing 1, and the lid member 2 can be stably held.

A terminal cover 31 formed of a synthetic resin into a square box shape is attached to the side surface of the housing 1 on the indoor side. A through hole 32 for inserting the mounting shaft 6 and exposing it to the indoor side is provided in the central portion of the terminal cover 31, and the mounting shaft 6 is formed on the mounting shaft 6 from the indoor side around the through hole 32 in the front facing the indoor side. A recess 33 for connecting the F-type plug F of the output side coaxial cable Co is formed.

Locking pieces 35 having wedge-shaped tips are formed on both left and right sides of the terminal cover 31, and the locking pieces 35 are engaged with mounting grooves 36 formed in the mounting pieces 9 of the housing 1. By doing so, the terminal cover 31 is attached to the housing 1.

Then, the TV outlet configured in this way is fixed to the wall surface via the bracket, and only the front surface of the terminal cover 31 and the mounting shaft 6 are exposed to the wall surface by the outlet cover. Next, the operation of the TV outlet configured as described above will be described.

When installing the above-mentioned TV outlet on the wall surface, as shown in FIG. 6, the core wire of the input side coaxial cable Ci to which the received signal is supplied from the antenna is first set to the terminal accommodating portion 18 with the lid member 2 opened. It is inserted into the insertion hole 19 and sandwiched between the first spring piece 15 of the terminal fitting 14.

Then, when the lid member 2 is closed and the screw 27 is tightened, the lid member 2 is fixed to the housing 1, and the input side coaxial cable Ci is pressed in the holding recess 26 in the radial direction to be deformed. As a result, the holding recess 26 is sealed with the input side coaxial cable Ci.

In this state, the TV outlet is installed on the wall surface, the F-type plug F of the input side coaxial cable Co is connected to the mounting shaft 6 exposed indoors, and the core wire is inserted into the insertion hole 12 to insert the core wire into the insertion hole 12. It is sandwiched between the second spring pieces 16. Then, the core wire of the input side coaxial cable Ci and the core wire of the output side coaxial cable Co are connected via the terminal fitting 14, and the antenna reception signal is supplied from the antenna to the television receiver.

With a TV outlet as described above, the following effects can be obtained.
(1) Since the opening of the housing 1 is covered with the lid member 2 integrally molded by zinc die-casting, the input side coaxial cable Ci connected in the housing 1 is connected to the housing 1 and the lid member 2. Can be covered. Therefore, it is possible to improve the electromagnetic shielding property and suppress the mixing of noise into the television reception output.

(2) The input side coaxial cable Ci can be pressed between the curved portion 26a of the lid member 2 and the opening edge of the housing 1 and the terminal plate 20 to substantially seal the holding recess 26. Therefore, it is possible to improve the electromagnetic shielding property for the input side coaxial cable Ci connected in the housing 1 without using the F-type plug F.

(3) If the core wire of the input side coaxial cable Ci is inserted into the insertion hole 19 of the terminal case 17, the lid member 2 is closed and fixed to the housing 1 with the screw 27, the input side coaxial cable Ci can be connected to the TV outlet. Since the work is completed, the number of steps required for connecting the input side coaxial cable Ci can be reduced. That is, the workability is good, and the shielding property against external noise can be ensured.

(4) Since the housing 1 is integrally molded by zinc die casting, a box-shaped housing can be formed without providing through holes. Therefore, the shielding property of the housing 1 can be improved.
(5) Since the lid member 2 is supported in the opening of the housing 1 so as to be openable and closable, the core wire of the input side coaxial cable Ci can be easily inserted into the insertion hole 19 of the terminal case 17 by opening the lid member 2. ..

(6) When the lid member 2 is closed after the core wire of the input side coaxial cable Ci is inserted into the insertion hole 19, the gap between the upper edge of the lid member 2 and the opening edge of the housing 1 is formed by a plurality of protrusions 30. It is blocked at regular intervals. Therefore, it is possible to suppress a decrease in electromagnetic shielding property due to a gap between the upper edge of the lid member 2 and the opening edge of the housing 1.

(7) By engaging the retaining protrusion 34 provided on the curved portion 26a of the lid member 2 with the input-side coaxial cable Ci, it is possible to prevent the input-side coaxial cable Ci from coming off from the holding recess 26.

(8) Since the mounting shaft 6 to which the F-type plug F of the output side coaxial cable Co can be connected is integrally formed in the housing 1, the shielding property can be improved.
The above embodiment may be modified as follows.

-The housing 1 and the lid member 2 may be integrally formed of a metal other than zinc die-cast, for example, aluminum die-cast, that is, a metal having a property of shielding electromagnetic waves and suitable for casting.
-For the protrusions that close the gap between the lid member and the housing at equal intervals, a member separate from the lid member may be attached to the lid member. The protrusions described above do not have to be evenly spaced.

(Appendix 1)
A storage unit for storing the terminal fitting to which the core wire of the F-type plug is connected, and a housing having an opening for opening the storage unit.
A metal lid member that covers the opening of the housing is provided.
The peripheral edge of the lid member is a television outlet that contacts the peripheral edge of the opening of the housing.

(Appendix 2)
The housing has a protrusion that protrudes from the peripheral edge of the opening of the housing to the side opposite to the storage portion of the housing.
The television outlet according to Appendix 1, wherein the lid member is arranged next to the protrusion.

(Appendix 3)
The protruding portion has a side surface extending in the protruding direction of the protruding portion.
The television outlet according to Appendix 2, wherein when the peripheral edge of the lid member is in contact with the peripheral edge of the opening of the housing, the side edge of the lid member faces the side surface of the protruding portion.

(Appendix 4)
The television outlet according to claim 2 or 3, wherein the protruding portion supports the lid member so as to be rotatable with respect to the housing.

(Appendix 5)
The lid member has a support shaft protruding from the side edge of the lid member, and has a support shaft.
The housing has a support groove that supports the support shaft so that the lid member can rotate with respect to the housing.
The television outlet according to any one of Supplementary note 1 to 4, wherein the support groove has a groove portion that supports the support shaft and an opening that communicates with the groove portion.

(Appendix 6)
The TV outlet according to Appendix 5, wherein the width of the opening of the support groove is smaller than the width of the groove.

(Appendix 7)
The television outlet according to Appendix 5 or 6, wherein the width of the opening of the support groove is smaller than the diameter of the support shaft.

(Appendix 8)
The television outlet according to any one of Supplementary note 1 to 7, wherein the lid member has a protrusion that closes a gap between a side edge of the lid member and an opening edge of the housing.

1: Housing 2: Lid member 3: Upper side 4: Side side 14: Terminal metal fittings 24: Support shaft 25: Support groove 30: Protrusion Ci: Input side shaft cable Co: Output side shaft cable F: F type plug

Claims (10)

A metal housing having a mounting shaft to which the F-type plug of the output side coaxial cable is connected, and mounting pieces formed on both sides of the first surface provided with the mounting shaft and projecting to the sides, respectively. When,
A metal lid member rotatably supported by the housing and
A terminal fitting to which the core wire of the input side coaxial cable and the core wire of the F-type tangent wire of the output side coaxial cable are electrically connected, and
With
The mounting shaft and the mounting piece are integrally formed of metal.
The terminal fitting has a spring piece to which the core wire of the input side coaxial cable is connected, and the spring piece is located on the side opposite to the mounting shaft with respect to the first surface.
The spring piece is located outside the projected region of the mounting shaft in the axial direction of the mounting shaft.
TV outlet. A terminal cover attached to the first surface of the housing and made of a synthetic resin is further provided.
The TV outlet according to claim 1. The terminal cover is provided with a through hole for inserting the mounting shaft.
With the terminal cover attached to the housing, the mounting pieces are located on both sides of the terminal cover.
The TV outlet according to claim 2. The terminal fitting includes a first spring piece as the spring piece to which the core wire of the input side coaxial cable is connected, and a second spring piece to which the core wire of the F-type plug of the output side coaxial cable is connected. , Have,
The TV outlet according to any one of claims 1 to 3. By connecting the core wire of the input side coaxial cable to the first spring piece with the lid member open and closing the lid member, the input side coaxial cable is sandwiched between the housing and the lid member. Is configured to be retained,
The TV outlet according to claim 4. With the lid member closed, a screw for fixing the lid member and the housing is further provided.
The TV outlet according to any one of claims 1 to 5. The housing is fixed to an indoor wall surface with the mounting piece.
The TV outlet according to any one of claims 1 to 6. The housing is formed in a box shape having an opening.
The lid member is rotatably supported by the enclosure so as to cover the opening.
The TV outlet according to any one of claims 1 to 7. A terminal accommodating portion in which the first spring piece is accommodated and an insertion hole is formed through which the core wire of the input side coaxial cable can be inserted is further provided.
The TV outlet according to claim 4 or 5. The mounting shaft, the mounting piece, and the housing are integrally formed of metal.
The TV outlet according to any one of claims 1 to 9.

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