JP2001111445A - Power supply part separation type booster device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold the beauty of a power supply part separation type booster device at the time of using the device as an integrated type and to stabilize the operation of the device by evading the oscillation of an amplifier part. SOLUTION: A power supply part 2 is provided with 1st internal wiring 31 for electrically connecting a signal input terminal 21 of the power supply part 2 to a signal input terminal 11 of an amplifier part 1 when the amplifier part 1 and the power supply part 2 are integrally joined with each other and 2nd internal wiring 34 for electrically connecting a signal output terminal 22 of the power supply part 2 to a signal output/power supply input terminal 12 of the amplifier part 1. The power supply part 2 is also provided with change- over switch mechanisms 38, 39 for electrically connecting both the internal wiring parts 31, 34 when the power supply part 2 is separated from the amplifier part 1 and disconnecting the wiring 31 from the wiring 34 when the power supply part 2 is joined with the amplifier part 1, and when the amplifier part 1 and the power supply part 2 are joined with each other, common contacts in the mechanisms 38, 39 are connected to the earth.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a booster device for amplifying a television signal or the like received by an antenna and supplying the amplified signal to a receiver, and in particular, attaches and detaches an amplifying unit for amplifying a received signal and a power supply unit of the booster device. With a configuration that can be freely separated,
The present invention relates to a power supply unit-separated booster device which can be used as an integral type or can be used separately.

[0002]

2. Description of the Related Art A booster device for amplifying a television signal received by an antenna is mechanically separable into a power supply unit and an amplifying unit so that both can be used integrally or both can be used separately. As a conventional technology that can also
No. 57-31885, No. 57-53695
No. 57-2741.

In these prior arts, a housing accommodating a power supply circuit (this is referred to as a power supply unit) and a housing accommodating an amplifier circuit (this is referred to as an amplification unit) have a detachable structure. When the entire booster device is installed indoors, the two housings are joined and integrated, and when the amplifier is installed outdoors, the two housings are separated, and the amplifier is mounted near the outdoor antenna and the power supply Is installed indoors, and both are connected by a cable.

[0004]

The prior art described above is
It relates only to the mechanical structure of joining / separation between the two housings, and there is only a description that electrical connection between the power supply unit and the amplification unit is performed by a feeder line. For this reason, when used as an integrated unit indoors, even if both housings are mechanically joined, separate wiring work is required to electrically connect the power supply unit and the amplifier unit separately. Become. Moreover, if the electric wiring is exposed to the outside of the housing, there is a problem that the appearance is impaired.

Further, when electric wiring is applied in an integrated manner,
If the work is not performed carefully, there is a problem that a path for returning the amplified high-frequency signal of the television signal to the input side of the amplifying unit is formed and the amplifying unit oscillates, so that stable operation cannot be expected. When installing the booster unit outdoors, it is rare for a general user who does not have electrical knowledge to install it near the antenna by himself, but when installing the integrated booster device indoors In many cases, the general user installs the device himself, and in such a case, the manufacturer must provide a booster device that guarantees stable operation.

A first object of the present invention is to provide a power supply unit-separated booster device capable of electrically and mechanically coupling a power supply unit and an amplifying unit without exposing electric wiring to the outside and which does not impair the appearance. To provide. A second object of the present invention is to provide a power supply unit separated type booster device that performs stable operation. A third object of the present invention is to provide a booster device with a separate power supply unit, which eliminates the need for a wiring work when used as an integrated type.

[0007]

A first object of the present invention is to provide an amplifying unit having a signal input terminal and a signal output / power input terminal, and a power supply unit having a signal input terminal and a signal output terminal. In the power supply unit-separated booster device configured to be capable of joining and separating the amplification unit and the power supply unit, the power supply unit has a signal input to the power supply unit when the amplification unit and the power supply unit are integrally joined. A first internal wiring for electrically connecting a terminal to a signal input terminal of the amplifier; and a second internal wiring for electrically connecting a signal output terminal of the power supply to a signal output / power input terminal of the amplifier. And a changeover switch mechanism for electrically connecting the first internal wiring and the second internal wiring when the power supply section and the amplification section are separated, and for interrupting the connection when the connection is made. Is achieved. When the power supply unit and the amplifying unit are joined, the electrical connection is automatically performed by the internal wiring in the power supply unit, so that there is no need to perform a separate wiring operation. In addition, because of the internal wiring, the appearance is not impaired.

A second object of the present invention is to connect a common contact in the changeover switch mechanism to ground when the changeover switch mechanism joins the power supply section and the amplification section,
Achieved. When used as an integral type, the common contact in the changeover switch mechanism is automatically connected to ground, so the signal amplified by the amplifier and output from the amplifier returns to the input side of the amplifier through the common contact. Will not
Stable operation is guaranteed.

A third object of the present invention is to form a signal input terminal and a signal output / power supply input terminal of the amplifying section into a convex shape or a concave shape, fit the convex shape or the concave shape, and connect the electric connection terminal. A concave shape or a convex shape having the function of is formed in the power supply unit, and the convex shape or the concave shape of the amplifying unit and the concave shape or the convex shape of the power supply unit are fitted to each other so that a mechanism is formed. This is achieved by a structure in which they are joined together and electrically connected at the same time. The convex and concave shapes for mechanically joining the power supply unit and the amplifying unit also have the function of an electrical connection terminal, so that they are electrically connected by mechanically joining.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram in the case where the power supply separated type booster device according to one embodiment of the present invention is used separately, and FIG. 2 is a diagram in which the power supply separated type booster device shown in FIG. 1 is integrally joined. It is a block diagram in the case of using.

In both figures, an amplifying section 1 having a built-in amplifier circuit 1a having a generally known configuration and a power supply section 2 having a power circuit 2a having a generally known configuration have a separable structure. ing. The housing 1b of the amplifying unit 1 is provided with a projection 11 as a signal input terminal and a projection 12 as a signal output terminal and a power input terminal. The housing 2b of the power supply unit 2 is also provided with a projection 21 for signal input and a projection 22 for signal output. Further, the power supply unit 2 has a projection 23 of the amplification unit 1 on a surface 23 mechanically joined to the amplification unit 1.
Concave portions 24 and 25 are provided to be fitted with the first and second parts 12 respectively.

The surface 23 of the power supply 2 to be joined to the amplifier 1
A notch-shaped step is formed on each of the four circumferences, and a decorative cover 26 is fitted therein in a covering state for protecting the push button switch 40 and the recesses 24 and 25. Note that, instead of the cover, the wall 26 is erected, and a part of the bottom side of the amplifying unit 1 is embedded in a concave space formed by the surface 23 and the four peripheral walls 26. Good. This wall 26 has recesses 24 and 25
And a push button switch 40, which will be described later, as well as a function of a decorative cover for improving aesthetic appearance. Reference numeral 42 in the drawing indicates the presence of a pilot lamp (LED) for confirming the operation of the power supply unit 2.

The convex portions 11, 12, 21, 22 and the concave portion 2
4 and 25 also function as electric terminals, and when the protrusion and the recess are mechanically fitted to each other, or when a cable or the like is mechanically connected to the protrusion, they are also electrically connected at the same time. It is configured to be. Convex parts 11, 12, 21, 22
Have the same structure, and the concave portions 24 and 25 have the same structure correspondingly.

FIG. 3 is a sectional view of the convex portion 11 and the concave portion 24. The convex portion 11 protruding from the amplifying portion 1 and the concave portion 24 of the power supply portion 2 fitted to the convex portion 11 are both formed by a technique related to a known connector for antenna connection. The convex portion 11 has a metal columnar support member 11a fixed to the housing 1b of the amplifier 1. A screw 11b is threaded on an outer peripheral portion of the support member 11a. When a well-known connector such as a coaxial cable 4 connected to the antenna 3 is detachably connected to the projection 11, the screw 11b is used. The cable will be fixed. 11g indicates the presence of a member (nut or caulking member) for detachably fixing the convex portion 11 to the housing inside (or outside) the housing as is well known.

An electric insulating material 11c made of synthetic resin is housed inside the cylindrical support member 11a.
d, two leaf spring-shaped electrical connection terminals 11e are housed and fixed to face each other, and the rod-shaped connection terminal inserted from the open end 11f of the support member 11a and the electrical insulating material 11c is connected to both electrical connection terminals. An electrical connection is made by sandwiching between 11e.

The recess 24 is provided with respect to the housing 2b of the power supply unit 2.
As is well known, a metal cylindrical support member 24a is detachably fixed using the above-described nut or the like. The inner side 24c of the cylindrical support member 24a has a size such that the columnar support member 11a of the convex portion 11 just fits therein, and the support member 11a can be used without using the screw 11b of the support member 11a. Can be fixed. Cylindrical support member 24
A rod-shaped connection terminal 24b sandwiched between the above-described leaf spring-shaped electric connection terminals 11e is provided in a. The connection terminal 24b is provided so as to penetrate an electric insulating material 24c made of a synthetic resin fixed in the cylindrical support member 24a, and is insulated from surrounding metals.

As described above, the protrusions 11, 12, 21, 22 are formed.
And the recesses 24 and 25 also function as electric terminals, respectively. Therefore, when the booster device is used separately, as shown in FIG. 11 is connected using a connector attached to the distal end of the cable 4, and the signal output projection 12 of the amplifier 1 is connected to the signal input projection 21 of the power supply 2 and the cable 5 and the cable 5. It is sufficient to connect using well-known connectors attached to both ends of the power supply unit 2 and connect the signal output projection 22 of the power supply unit 2 to a receiver such as a television (not shown).

When the booster device is used as an integrated type, as shown in FIG.
2 and the concave portions 24 and 25 of the power supply unit 2 are fitted to each other, and the antenna 3 is connected to the signal input convex portion 21 of the power supply unit 2 using the cable 6 with a well-known connector. It is sufficient to connect the unit 22 to a receiver such as a television. Hereinafter, the convex portions 11, 12, 21, 22 and the concave portion 2
4, 25, instead of electrical terminals 11, 12, 21,.
Also referred to as 22, 24, 25.

As described above, when the booster device according to the present embodiment is used as an integral type as shown in FIG. Although the configuration does not need to be considered,
This is because a changeover switch mechanism is provided in the power supply unit 2. Hereinafter, the changeover switch mechanism will be described in detail.

Inside the power supply section 2, the amplifying section 1
A first internal wiring 31 that electrically connects the signal input terminal 21 of the power supply unit 2 and the signal input terminal 11 of the amplification unit 1 when the power supply unit 2 and the power supply unit 2 are joined together; A second internal wiring is provided for electrically connecting the output terminal to the signal output / power input terminal of the amplifying section. For example, as shown in FIG. 1, the electric terminal 24 is directly connected to the electric terminal 21 by the wiring 31. A power supply cut capacitor 33 is connected between the power supply connection point 32 and the electric terminal 22, and the power supply connection point 32
And the electrical terminal 25 are connected by a wiring 34. 100 V is supplied to the power supply circuit 2a through a plug 36 connected to a commercial power supply, and the power supply circuit 2a generates and outputs 15 V DC or 24 V AC. This power supply circuit 2a
Is output to the power supply connection point 32 through the choke coil 37.
Is output to

A switch circuit 38 exemplified as a changeover switch mechanism has a contact 38a connected to the wiring 31, a contact 38b connected to the ground, and a common contact 38c. The switch circuit 39 is connected to the contact 3 connected to the wiring 34.
9a, a contact 39b connected to ground, and a common contact 3
9c. The common contacts 38c and 39c of both switch circuits 38 and 39 are commonly connected.
The common contact 38c is switchably connected to a contact 38a or a contact 38b, and the common contact 39c is a contact 39a or a contact 39b.
The switching of the common contacts 38c and 39c is performed in an interlocking and sequential manner, and the driving is performed mechanically or by using magnetic force.

The switching of the common contacts 38c and 39c is performed by a push button switch 40 as an animal protruding from the surface 23 of the power supply section 2 joined to the amplification section 1. The push button switch 40 is a not-shown bullet. The common contacts 38c (39c) are connected to the contacts 38a (39a) in the protruding state by the springs, and the common contacts 38c (39c) are connected to the contacts 38a (39a). When the switch 40 is pushed in against the resilient spring, the common contact 38c (39c) is switched to the contact 38b (39b) and connected to the ground. Note that the common contact 38c (3
The driving in 9c) may be manually moving the slide switch forward or backward.

When the power supply unit-separated type booster having the above-described changeover switch mechanism is used separately as shown in FIG. 1, the output power of the power supply circuit 2a of the power supply unit 2 is supplied to the power supply through the choke coil 37. Although supplied to the connection point 32, it does not flow from the electric terminal 22 to the television receiver due to the power supply cut capacitor 33. The power supplied to the power supply connection point 32 is changed from the wiring 34 → the switching contact 39a → the common contact 3
9c → common contact 38c → switching contact 38a → wiring 31 → electrical terminal 21 → cable 5, and from the electric terminal 12 to the amplifier 1 through a well-known power supply circuit, for example, a series circuit (not shown) of a diode and a choke coil. Supplied.

The signal received by the antenna 3 enters the amplifying section 1 from the electric terminal 11, and is amplified by the amplifying circuit 1a. Then, the signal follows the path opposite to the above-mentioned path and reaches the power supply connection point 32. . However, since this signal is a high-frequency signal, it does not flow through the choke coil 37, passes through the power cut capacitor 33, and is input from the electric terminal 22 to the television receiver.

When the power supply unit separated type booster device is used integrally, as shown in FIG. 2, the power output from the power supply circuit 2a of the power supply unit 2 is changed from the choke coil 37 to the power supply connection point 32 to the wiring. The current flows into the electric terminal 12 from the electric terminal 25 integrated according to the fitting state, and is supplied to the amplifier 1.

The signal received by the antenna 3 enters the electric terminal 21 through the cable 6, passes through the wiring 31, and enters the amplifier 1 through the electric terminal 24 and the electric terminal 11 which are integrated depending on the fitting state. The signal is amplified by the amplifier circuit 1a. The amplified signal passes through the electric terminal 12 and the electric terminal 25 which are integrated in the fitted state, and
4 through the power cut capacitor 33 to the electrical terminal 22
And is input to the television receiver.

At this time, since the common terminals 38c and 39c are both switched to the terminals 38b and 39b which are connected to the ground, the amplified signal is amplified through the line connecting the common terminal 38c and the common terminal 39c. There is no return to the input side of 1a, and the oscillation of the amplifier circuit 1a due to this can be avoided, and stable operation is guaranteed.

In the embodiment described above, the amplifying section 1 is provided with the convex section 1 as a member for simultaneously performing the mechanical fitting and the electrical connection.
Although the power supply unit 2 is provided with the concave portions 24 and 25, the power supply unit 2 may be provided with a concave portion and the power supply unit 2 may be provided with a convex portion.

[0029]

According to the present invention, the switch is operated by the mechanical joining / separation to switch the wiring, so that the external appearance of the wiring is maintained without exposing the wiring. Furthermore, since the changeover switch mechanism is connected to the ground when integrated, the signal amplified by the amplification unit does not return to the input side of the amplification unit, and the operation of the booster device is stabilized. In addition, since the convex and concave portions for mechanically joining have an electrical connection terminal function, mechanical joining and electrical connection can be performed simultaneously with one touch.

[Brief description of the drawings]

FIG. 1 is a connection diagram in a case where a power supply separated type booster device according to an embodiment of the present invention is used separately.

FIG. 2 is a connection diagram in the case where the power supply unit separated type booster device shown in FIG. 1 is used integrally.

FIG. 3 is a sectional view of a convex portion and a concave portion shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Amplification part, 1a ... Amplification circuit, 2 ... Power supply part, 2a ... Power supply circuit, 3 ... Antenna, 4,5,6 ... Cable, 11 ... Protrusion (signal input terminal of amplification part), 12 ... Protrusion ( Amplifying section signal output and power supply input terminal), 21 ... convex section (signal input terminal of power supply section), 22 ... convex section (signal output terminal of power supply section), 2
3 joining surface, 24, 25 recess (electrical terminal), 26 wall (decorative cover), 31 first internal wiring, 34 second internal wiring, 33 power cut capacitor, 37 choke coil, 38 39 switches, 38a, 39a switching contacts, 38b, 39b switching contacts connected to ground, 3
8c, 39c: common contact, 40: push button switch.

Claims (3)

[Claims] An amplifying unit having a signal input terminal and a signal output / power supply input terminal; and a power supply unit having a signal input terminal and a signal output terminal, and joining the amplifying unit and the power supply unit. In the power supply unit separated type booster device configured to be separable, the power supply unit includes a signal input terminal of the power supply unit and a signal input terminal of the amplification unit when the amplification unit and the power supply unit are integrally joined. A first internal wiring for electrical connection and a second internal wiring for electrically connecting a signal output terminal of the power supply unit and a signal output / power input terminal of the amplification unit; and providing the power supply unit and the amplification unit with each other. When the first is separated
A power supply unit-separated booster device, further comprising a changeover switch mechanism for electrically connecting an internal wiring to the second internal wiring and disconnecting the connection when the connection is made. 2. The switch mechanism according to claim 1, wherein the switch mechanism includes means for connecting a common contact in the switch mechanism to ground when the power supply unit and the amplifier unit are joined. Power supply separated type booster device. 3. A signal input terminal and a signal output / power supply input terminal of the amplification section are formed in a convex shape or a concave shape,
The power supply section is formed with a concave shape or a convex shape having a function of an electrical connection terminal while fitting into the convex shape or the concave shape, and the convex shape or the concave shape of the amplifying section and the concave shape of the power supply section. 3. The structure according to claim 1 or 2, wherein the shape and the projection are fitted to each other to mechanically join them together and electrically connect them at the same time.
A power supply unit-separated booster device as described in the above.