JP2008251456A - Signal processing unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a signal processing unit with its storage box downsized, and wiring works in the storage box made easy. <P>SOLUTION: A movable terminal 7 used as an output terminal is formed in an L-shape, and that, is pivotally supported in free rotation to the top face of a unit case 3. With this, the movable terminal 7 can always be directed to a direction where a coaxial cable makes a natural curve. Moreover, since the movable terminal 7 is at a position higher than the unit case 3, connection of the coaxial cable to the movable terminal 7 or routing of the coaxial cable connected can be easily carried out, even if an arrangement interval of the signal processing unit is narrow, or further, the storage box can be downsized. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a signal processing unit that is used by being fixed in a storage box having a lead-in port for drawing a coaxial transmission line.

  In recent years, as infrastructure in the information technology field such as CATV systems has been improved, in buildings, for example, communication equipment such as CATV boosters, distributors, DSUs (digital service units), cable modems, etc. A large number of various devices (hereinafter referred to as “signal processing units”) have been installed.

  In order to facilitate maintenance and inspection of these signal processing units, it is considered that the signal processing units are collectively stored in a storage box (a so-called housing information panel or the like) attached to a wall of a building or the like ( For example, see Patent Document 1).

  In this type of system, a coaxial cable is generally used for signal transmission between the signal processing units, and each signal processing unit is provided with a coaxial connector for connecting the coaxial cable.

Specifically, as shown in FIG. 9, the signal processing unit 101 has a rectangular parallelepiped housing 103, and when fixed to the storage box, the surface in contact with the storage box is used as a bottom surface, and the bottom surface is In general, an input terminal 105 made of a coaxial connector and output terminals 107 and 108 are protruded from a standing side surface (see, for example, Patent Document 2).
JP 2001-345562 A JP 2002-158457 A

  By the way, when the coaxial connector is provided on the side surface of the signal processing unit as described above, a space for attaching and detaching the plug provided on the coaxial cable is secured when the signal processing unit is fixed in the storage box. In order to do this, the signal processing units must be placed apart. Moreover, it is difficult to bend a coaxial cable having a large diameter with a small curvature, and a sufficient wiring space must be secured.

Therefore, there is a problem that the storage box cannot be reduced in size and a problem that the workability of the wiring work in the storage box is poor.
The present invention has been made to solve these problems, and an object of the present invention is to reduce the size of a storage box that houses a signal processing unit, and to perform signal processing that facilitates wiring work in the storage box. To provide a unit.

The invention according to claim 1, which has been made to solve the above problems, is a signal processing unit that is fixed in a storage box having a lead-in port for drawing a coaxial transmission line, and that processes a signal transmitted through the coaxial transmission line. A plurality of terminals comprising a cylindrical receptacle seat to which a plug attached to the coaxial transmission line can be attached and detached, and a unit housing supporting the terminals, wherein at least one of the terminals is the The central axis of the connection end connected to the unit housing and the central axis of the detachable end where the cable-side terminal is attached / detached are orthogonal to each other, and are pivotable around the central axis of the connection end as a rotation axis. A movable terminal that is attached to the flat surface formed by a central axis of the detachable end by rotation of the movable terminal in a state where the unit casing is fixed to the storage box, and the unit casing is Fixed said yield Wherein the a box of the fixed surface is disposed in parallel.

  According to a second aspect of the present invention, in the signal processing unit according to the first aspect, the terminal includes one input terminal and a plurality of output terminals, and is input from the input terminal into the unit casing. A branch circuit for branching a signal and outputting it from the plurality of output terminals is incorporated.

  According to a third aspect of the present invention, in the signal processing unit according to the first aspect, an amplification circuit for amplifying a signal input from one terminal and outputting it from the other terminal is built in the unit casing. It is characterized by.

  According to a fourth aspect of the present invention, in the signal processing unit according to any one of the first to third aspects, the detachable end side of the terminal is formed in a shape that allows the F-type plug to be detachable. Features.

  According to a fifth aspect of the present invention, in the signal processing unit according to any one of the first to fourth aspects, the unit housing has a mounting hole for pivotally attaching the connection end of the movable terminal. And a structure in which a divided housing that is divided so as to divide a portion that forms an opening edge of the mounting hole is integrally fixed, and an opening edge portion of the mounting hole is provided on a connection end side of the movable terminal. A terminal-side connecting portion that engages with the housing-side connecting portion formed on the housing is formed, and the terminal-side connecting portion is sandwiched between the housing-side connecting portions formed on each of the divided housings to engage both connecting portions. Accordingly, the movable terminal is pivotally attached to the unit casing.

  In the signal processing unit of the present invention, at least one of the terminals provided for connecting the coaxial transmission line is configured as a movable terminal, and the movable terminal does not protrude from the side surface of the unit casing, but is connected to the unit casing. It protrudes from the upper surface of the body.

  Therefore, according to the signal processing unit of the present invention, it is possible to direct the movable terminal in a direction in which the coaxial transmission line can be wired without bending it at an excessive angle, and to reduce the workability of the wiring work with respect to the movable terminal. In addition, the arrangement interval of the signal processing units can be reduced, and the storage box can be reduced in size.

  The signal processing unit is configured, for example, as a branching device including a branch circuit as described in claim 2, or as an amplifier including an amplifier circuit as described in claim 3. It may be.

Further, as described in claim 4, the terminal is preferably configured so that the F-type plug can be attached and detached.
Further, when the movable terminal is pivotally attached to the mounting hole formed in the unit casing, the unit casing is configured to have a structure in which the divided casing is integrally fixed as described in claim 5, and is movable. The terminal-side connection portion formed on the terminal may be sandwiched between the housing-side connection portions formed in each of the divided housings so that both the connection portions are engaged.

  In this case, the movable terminal can be realized with a simple configuration and simple assembly.

Embodiments of the present invention will be described below in detail with reference to the drawings.
[First Embodiment]
1A and 1B are diagrams showing a configuration of an amplifier unit 1 to which the present invention is applied. FIG. 1A is a plan view, FIG. 1B is a front view, and FIG.

  The amplifier unit 1 is a kind of signal processing unit used when, for example, a CATV system or the like constructs a communication system, and another signal processing unit (CATV) is installed in a storage box installed on the wall surface of a building. And a booster, a distributor, a DSU, a cable modem, etc.) and wired by a transmission line made of a coaxial cable.

  In the following description, unless otherwise specified, the horizontal direction in FIGS. 1 (a) and 1 (b) is the longitudinal direction, the vertical direction in FIG. 1 (a), and the horizontal direction in FIG. 1 (c). Is the short direction, and the vertical direction in FIGS. 1B and 1C is the vertical direction.

  As shown in FIG. 1, the amplifier unit 1 includes a unit housing 3 formed in a rectangular parallelepiped shape, and a side surface (surface along the vertical direction) of the unit housing 3 at one end side in the longitudinal direction of the unit housing 3. And the fixed terminal 5 that is used as an input terminal and the other end side in the longitudinal direction of the unit casing 3, and is protruded from the upper surface of the unit casing 3 (the surface located on the upper side in the vertical direction). And a movable terminal 7 used as an output terminal.

  Among these, the unit housing 3 is a box body that is manufactured by molding a conductive material such as aluminum die casting and has a space for storing electronic components and the like therein. In addition, the flange part in which the screw hole for fixing the said amplifier unit 1 to the fixed surface etc. in a storage box was formed in the four corners of the lower surface (surface located in the up-down direction) of the unit housing | casing 3 4 is provided, and an attachment hole 30 (see FIG. 2B) is formed on the upper surface of the unit housing 3 so that the movable terminal 7 is pivotably mounted. The unit housing 3 has a structure in which the divided housings 3a and 3b obtained by dividing the center in the short side direction into two along the longitudinal direction are integrally fixed.

  Here, FIG. 2A is a cross-sectional view taken along line AA in FIG. 1A, and FIG. 2B is a perspective view in which a part of the divided housing is broken. 3 is a diagram showing details of the output terminal which is a movable terminal, in which (a) is a side view, (b) is a front view, and (c) is a cross-sectional view taken along line BB in (b). .

  In FIG. 2A, the divided housing 3a is shown with the other divided housing 3b removed. However, it is assumed that the side wall on which the fixed terminal 5 is formed is formed integrally with the divided housing 3a. In other words, the split housing 3b has a shape symmetrical to the split housing 3a except that it does not have a side wall on which the fixed terminals 5 are formed, but is configured in the same manner as the split housing 3a. Yes.

  As shown in FIG. 2, a printed circuit board 40 in which electronic components are incorporated is assembled in a space formed inside the unit housing 3. In the present embodiment, on the printed circuit board 40, an amplifier circuit that amplifies a signal input from the fixed terminal 5 that is an input terminal and outputs the amplified signal to the movable terminal 7 that is an output terminal is configured.

This printed circuit board 40 is electrically connected by soldering a ground-side conductor formed around the printed circuit board 40 to a large number of protruding pieces 38 formed on the inner wall of the divided housing 3a. It is fixed in a stable state. Further, in the printed circuit board 40 assembled in the unit housing 3, the signal-side conductor formed on the printed circuit board 40 is protruded into the unit housing 3 from the fixed terminal 5 and the movable terminal 7. Center conductor (described later) 51, 7
1 is connected.

  In addition, as shown in FIG. 2B, in the divided housings 3 a and 3 b, a semicircular recess that forms the attachment hole 30 is formed on the wall surface that forms the upper surface of the unit housing 3. A protrusion 32 having a constant thickness is formed on the peripheral edge 31 of the recess (that is, the opening edge of the mounting hole 30). That is, since the ring-shaped wall formed of the protrusions 32 is present on the inner peripheral edge 31 of the mounting hole 30 formed by fixing the divided housings 3a and 3b integrally, the hole diameter of the mounting hole 30 is set to It changes stepwise along the axial direction of the hole 30. Hereinafter, the structure including the inner peripheral edge 31 and the protrusion 32 is referred to as a housing side connection portion 33.

  In addition, screw holes 34 having internal threads are formed in a plurality of locations on the end face of one divided housing 3a, and the other divided housing 3b is divided into positions facing these screw holes 34. A through hole 35 penetrating the housing 3b is formed. That is, with the divided housings 3a and 3b closed, the divided housings 3a and 3b are integrated by inserting the screw rods 36 into the through holes 35 from the divided housing 3b and screwing them into the screw holes 34. It is fixed to.

  Next, the fixed terminal 5 has a center conductor 51 and an outer conductor 53 provided concentrically with the center conductor 51, and an F-type plug (not shown) connected to the tip of the coaxial cable is attached and detached. It consists of a possible cylindrical F-type plug seat. The outer conductor 53 is configured integrally with the side wall of the unit housing 3. The center conductor 51 is configured such that one end on the side to which the F-type plug is connected is formed to sandwich the center conductor of the F-type plug and the other end protrudes into the unit housing 3. It is held by a spacer 55 made of an insulator so as to be disposed along the central axis of the outer conductor 53.

  On the other hand, as shown in FIGS. 2 and 3, the movable terminal 7 includes a center conductor 71 and an outer conductor 73 provided concentrically with the center conductor 71, and is a cylindrical and substantially L-shaped F type. It consists of a stopper seat.

  In the following, in the movable terminal 7, the side where the F-type plug (not shown) connected to the tip of the coaxial cable is attached to or detached from the two cylindrical portions that are perpendicular to each other to form an L shape. The side that is pivotally attached to the detachable portion 7a and the unit housing 3 is referred to as a sliding fixing portion 7b.

  The external conductor 73 is integrally formed so that the internal spaces of the first external conductor 73a on the attachment / detachment portion 7a side and the second external conductor 73b on the slide fixing portion 7b side communicate with each other. In the vicinity of the connection portion of the second outer conductors 73a and 73b, a through hole 75 is provided which communicates with the inner space and can be sealed by press-fitting or screwing the lid 74.

  In addition, a terminal-side connection portion 78 including a pair of protrusions 77 that form a circumferential groove 76 for engaging the housing-side connection portion 33 is formed on the outer peripheral wall of the second outer conductor 73b. Note that the outer diameter of the portion where the circumferential groove 76 is formed in the second outer conductor 73 b is the hole diameter of the mounting hole 30 in the portion where the protrusion 32 of the housing side connection portion 33 is formed (hereinafter referred to as “small diameter portion”). The outer diameter of the portion where the protrusion 77 is smaller is smaller than the hole diameter in the portion other than the small diameter portion of the mounting hole 30 (hereinafter referred to as “large diameter portion”) and larger than the hole diameter in the small diameter portion. Is formed.

That is, when the unit housing 3 is assembled, the protrusion 32 of the housing side connection portion 33 formed on each of the divided housings 3 a and 3 b is engaged with the circumferential groove 76 of the terminal side connection portion 78 formed on the movable terminal 7. The split terminals 3a and 3b are integrally fixed so as to sandwich the movable terminal 7 so that the movable terminal 7 is in a slidingly fixed portion while maintaining electrical connection with the unit casing 3. 7b (second outer conductor 73b) is pivotally attached to the mounting hole 30 of the unit housing 3 in a state where the rotation is possible with the central axis as the rotation axis.

The center conductor 71 of the movable terminal 7 includes a first center conductor 71a on the attachment / detachment portion 7a side and a second center conductor 71b on the slide fixing portion 7b side.
Among these, the first center conductor 71a is configured in the same manner as the center conductor 51 of the fixed terminal 5, and one end thereof is configured to protrude not into the unit housing 3 but into the sliding fixing portion 7b. The second center conductor 71b is configured such that one end is in contact with a portion protruding into the sliding fixing portion 7b of the first center conductor 71a and the other end protrudes into the unit housing 3.

  The central conductors 71a and 71b are held by spacers 78a and 78b made of an insulator so that the central conductors 71a and 71b are arranged along the central axes of the external conductors 73a and 73b, respectively. The spacers 78a and 78b are fixed in the outer conductors 73a and 73b by press fitting or adhesive.

  The portions where the first and second central conductors 71a and 71b are in contact with each other are fixed by, for example, soldering or the like through the through holes 75 formed in the external conductor 73. That is, the tip end portion of the second central conductor 71 b protruding into the unit housing 3 is configured to rotate with the rotation of the movable terminal 7.

Therefore, the center conductor 71 of the movable terminal 7 is connected to the signal-side conductor formed on the printed circuit board 40 via the elastic support member 80 that rotatably supports the center conductor 71.
The amplifier unit 1 configured in this way is fixed in a storage box, and a fixed terminal 5 as an input terminal and a movable terminal 7 as an output terminal are connected to a coaxial cable drawn into the storage box or a storage box. A coaxial cable used for connection with another stored signal processing unit is connected.

As described above, in the amplifier unit 1, the movable terminal 7 is formed in an L shape and is pivotally attached to the upper surface of the unit housing 3.
Therefore, according to the amplifier unit 1, the coaxial cable always has a natural curve regardless of the wiring state of the coaxial cable drawn into the storage box or the coaxial cable connected to another signal processing unit stored in the storage box. The movable terminal 7 can be directed in the direction of drawing.

  Further, according to the amplifier unit 1, since the movable terminal 7 is located higher than the unit housing 3, the coaxial cable can be connected to the movable terminal 7 even when the arrangement interval of the signal processing units including the amplifier unit 1 is narrow. The connected coaxial cable can be easily routed, and the storage box can be downsized.

  In this embodiment, the fixed terminal 5 is used as an input terminal and the movable terminal 7 is used as an output terminal. Conversely, the fixed terminal 5 is used as an input terminal and the movable terminal 7 is used as an input terminal. May be.

Further, like the amplifier unit 1A shown in FIG. 4, a movable terminal 8 configured in the same manner as the movable terminal 7 is provided instead of the fixed terminal 5 so that both the input terminal and the output terminal become the movable terminals 7 and 8. You may comprise.
[Second Embodiment]
Next, a second embodiment of the present invention will be described.

  The amplifier unit 1 according to the first embodiment is different from the amplifier unit 1 only in a part of the configuration. Therefore, the same components are denoted by the same reference numerals, the description thereof is omitted, and the description is focused on portions having different configurations. .

5A and 5B are diagrams showing a configuration of a distributor unit 2 to which the present invention is applied, in which FIG. 5A is a plan view, FIG. 5B is a front view, and FIG. 5C is a side view.
The distributor unit 2 is formed on a side surface located at one end of the unit housing 3 in the short direction, and is formed on the fixed terminal 5 used as an input terminal and the upper surface of the unit housing 3 and used as an output terminal. Two movable terminals 7 and 8 are provided.

  Then, on the printed circuit board housed in the unit housing 3, the signal input from the input terminal (fixed terminal 5) is distributed to the power from each of the two output terminals (movable terminals 7 and 8). A distribution circuit for outputting is configured.

The details of the fixed terminal 5 and the movable terminals 7 and 8 and the structure for pivotally mounting the movable terminals 7 and 8 to the unit housing 3 are the same as those in the first embodiment.
The distributor unit 2 configured as described above differs from the amplifier unit 1 of the first embodiment only in the content of signal processing and the number of output terminals, and is easy to connect and store coaxial cables and wiring. As for the downsizing of the box, the same effect as that of the amplifier unit 1 can be obtained.

  In this embodiment, the fixed terminal 5 is used as an input terminal and the movable terminals 7 and 8 are used as output terminals. However, the fixed terminal 5 is used as an output terminal and the movable terminals 7 and 8 are used as input terminals and output terminals. You may comprise as follows.

Moreover, like the distributor unit 2A shown in FIG. 6, instead of the fixed terminal 5, a movable terminal 9 configured similarly to the movable terminals 7 and 8 is provided, and all of the input terminal and the output terminal are movable terminals 7, It may be configured to be 8,9.
[Other Embodiments]
Although several embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be implemented in various modes without departing from the gist of the present invention. .

For example, the number of fixed terminals and movable terminals and the correspondence between the fixed terminals and movable terminals and the input terminals and output terminals are not limited to those described above, and may be set arbitrarily.
In the above embodiment, the amplifier units 1 and 1A and the distributor units 2 and 2A have been described.

  In the above-described embodiment, the example in which the circumferential groove 76 of the terminal side connection portion 78 is formed over the entire circumference of the sliding fixing portion 7b is shown. Since it only needs to be pivotally attached so as not to drop out of the hole 30, it is not always necessary to provide it all around, and an intermittent groove may be formed.

  In the above embodiment, the housing side connection portion 33 and the terminal side connection portion 78 are configured to be in direct contact with each other. For example, the movable terminal 7 is rotated in the circumferential groove 76 of the terminal side connection portion 78. A sliding member made of an elastic conductive material for improving the electrical contact with the unit housing 3 and improving the shielding property is mounted, and both connecting portions are connected via the sliding member. You may comprise so that 33 and 78 may contact.

It is a figure which shows the structure of the amplifier unit of 1st Embodiment, (a) is a top view, (b) is a front view, (c) is a side view. (A) is the sectional view on the AA line in Fig.1 (a), (b) is the perspective view which fractured | ruptured a part of division | segmentation housing | casing. It is a figure which shows the structure of a movable terminal, (a) is a side view, (b) is a front view, (c) is the BB sectional drawing in (b). It is a figure which shows the structure of the modification of 1st Embodiment, (a) is a top view, (b) is a front view, (c) is a side view. It is a figure which shows the structure of the divider | distributor unit of 2nd Embodiment, (a) is a top view, (b) is a front view, (c) is a side view. It is a figure which shows the structure of the modification of 2nd Embodiment, (a) is a top view, (b) is a front view, (c) is a side view. It is a figure which shows the structure of the conventional signal processing unit, (a) is a top view, (b) is a front view, (c) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1A ... Amplifier unit 2, 2A ... Distributor unit 3 ... Unit housing | casing 3a, 3b ... Divided housing | casing 4 ... Flange part 5 ... Fixed terminal 7, 8, 9 ... Movable terminal 7a ... Detachable part 7b ... Sliding fixation Part 30: Mounting hole 31 ... Peripheral 32, 77 ... Projection 33 ... Housing side connection part 34 ... Screw hole 35 ... Through hole 36 ... Screw rod 38 ... Projection piece 40 ... Printed circuit board 51, 71 ... Central conductors 53, 73 ... External conductor
55, 78a, 78b ... Spacer 74 ... Lid 75 ... Through-hole 76 ... Circumferential groove
78 ... Terminal side connection part 80 ... Elastic support member

Claims (5)

A signal processing unit that is fixed in a storage box having a lead-in port for drawing a coaxial transmission line, and that processes a signal transmitted through the coaxial transmission line,
A plurality of terminals composed of cylindrical plug seats to which a plug attached to the coaxial transmission line can be attached and detached;
A unit housing for supporting the terminal,
At least one of the terminals has a shape in which a central axis of a connection end connected to the unit housing and a central axis of an attachment / detachment end to / from which the cable side terminal is attached / detached are orthogonal to each other, and the center of the connection end It consists of a movable terminal pivotally attached to the axis as a rotation axis
In the state where the unit casing is fixed to the storage box, the movable terminal has a plane formed by a central axis of the detachable end by rotation of the movable terminal, and a fixed surface of the storage box on which the unit casing is fixed Are arranged so as to be parallel to each other. The terminal includes one input terminal and a plurality of output terminals,
The signal processing unit according to claim 1, wherein a branch circuit for branching a signal input from the input terminal and outputting the branched signal from the plurality of output terminals is built in the unit casing.   The signal processing unit according to claim 1, wherein an amplification circuit that amplifies a signal input from one terminal and outputs the signal from another terminal is built in the unit casing.   The signal processing unit according to any one of claims 1 to 3, wherein an attachment / detachment end side of the terminal is formed in a shape in which an F-type plug is attachable / detachable. The unit casing has a mounting hole for pivotally attaching the connection end of the movable terminal, and a divided casing that is divided so as to divide the portion forming the opening edge of the mounting hole into two is fixed integrally. Having the structure
On the connection end side of the movable terminal, a terminal side connection portion that is engaged with a housing side connection portion formed at an opening edge portion of the mounting hole is formed,
The movable terminal is pivotally attached to the unit casing by sandwiching the terminal-side connecting section between the casing-side connecting sections formed in each of the divided casings and engaging both the connecting sections. The signal processing unit according to any one of claims 1 to 4.

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