JP4448151B2 - Amplifier case - Google Patents

Description

  The present invention relates to an amplifier case that houses an amplifier that amplifies a CATV signal.

  Conventionally, when a CATV signal is introduced into a building from a CATV system, the CATV signal transmitted by the CATV line 100 is branched by the branching device 101 and attached to the outer wall of the building as shown in FIG. Supply to the amplifier 102. Then, after being amplified by the amplifier 102, it is introduced into the building by a coaxial cable, and is distributed into, for example, two by the distributor 103 and supplied to the television receiver (TV). The amplifier 102 compensates for the CATV signal level drop caused by the distributor 103 and the like, and is housed in an amplifier case. The amplifier case also houses a power supply unit that supplies power to the amplifier 102. The power supply unit is configured to operate with a commercial AC power supply (AC100V).

  FIG. 17 shows another configuration for introducing a CATV signal from a CATV system into a building. In this example, instead of housing the power supply unit supplied to the amplifier 102 in the amplifier case, the power supply unit 104 is installed in the middle of the coaxial cable inside the building. In the power supply unit 104, AC 100V commercial AC power is converted into + 15V DC power, for example, and supplied to the amplifier 102 through a coaxial cable. With this configuration, it is not necessary to provide an AC 100V outlet outdoors.

  Thus, there are two types of configurations for supplying power to the amplifier 102 that amplifies the CATV signal when introducing the CATV signal. That is, as shown in FIG. 16, the power supply unit built in the amplifier case of the amplifier 102 is operated at 100 VAC, and the power supply unit 104 is located away from the amplifier 102 (indoor) as shown in FIG. In the power supply unit 104, any one of a configuration in which AC100V is converted into a DC power supply and power is supplied to the amplifier 102 using a coaxial cable to which a CATV signal is supplied is used. The configuration shown in FIG. 17 is employed when there is no AC 100V outlet outdoors as described above.

  Therefore, manufacturers who provide CATV amplifiers must prepare two types: an amplifier case with a built-in power supply unit, an amplifier case with only an amplifier built-in, and a separate type with a power supply unit. It will be necessary. The same applies to contractors who perform CATV work, and there is a problem that the cost is high due to the necessity of inventory management and the like. In addition, since the construction contractor is on-site, the two types of amplifiers must be brought into the site, and there is a problem that work such as confirmation of members becomes complicated.

  In order to solve this, an amplifier has been proposed (Japanese Patent No. 3239105) in which a power supply unit can be detachably accommodated in an amplifier case. In this amplifier, when there is an AC 100V supply source outdoors, it can be configured as shown in FIG. 16 with the power supply unit housed in the amplifier case, and when there is no AC 100V supply source outdoors, The power supply unit can be taken out from the amplifier case and installed indoors as shown in FIG. In this case, the power supply unit is provided with a signal input terminal and a signal output terminal to which a coaxial cable can be connected, and the amplifier is also provided with a signal input terminal and a signal output terminal. The signal output terminal of the amplifier also serves as a power input terminal, and the signal input terminal of the power supply unit also serves as a power output terminal. Therefore, when the power supply unit is used separately from the amplifier, the amplifier can be supplied with power from the power supply unit by connecting the signal output terminal of the amplifier and the signal input terminal of the power supply unit with a coaxial cable. It becomes like this. The CATV signal input to the power supply unit is output from the signal output terminal as it is.

The power supply section is provided with a dedicated jack for supplying power, and when the power supply section is stored in the amplifier case, the jack is connected to a power input plug provided in the amplifier. ing. Thereby, when the power supply unit is stored in the amplifier case, power is supplied to the amplifier from the power supply unit. In this way, the dedicated jack for supplying power to the power supply unit is provided so that the signal input terminal and the signal output terminal provided in the power supply unit protrude from the lower surface. This is because, in order to supply power using it, a storage space for that purpose is required, and there is a problem that the amplifier case becomes larger than necessary.
However, the dedicated jack provided in the power supply unit is not used when the power supply unit is used separately, and there is a problem that the parts are required and the circuit is complicated.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an amplifier case that does not require a dedicated jack for supplying power without requiring a storage space more than necessary.

  In order to achieve the above object, the amplifier case of the present invention has a storage space inside and a shape in which one side of the side wall is open, and the amplifier can be stored in the storage space. A power supply unit for supplying power to the amplifier is detachably accommodated in a case main body, and is rotatably supported on the one side of the case main body and has a storage space inside. The lid portion is fitted so as to cover the open surface of the case body portion, and the power source portion has a signal input terminal protruding from the lower portion, and the lid portion is rotated with respect to the case body portion. The case main body so that the power supply unit is brought into contact with the bottom surface of the case main body using the space formed in the vicinity of the one side by rotating the lid when the cover is opened. Storage space After storing, the signal input terminal protruding from the lower part of the power supply unit is moved by moving the power supply unit along the bottom surface and moving to the side of the side wall facing the open side of the side wall. The amplifier is accommodated in the amplifier accommodated in the case body, and power is supplied to the amplifier via the signal input terminal.

Further, in the amplifier case of the present invention, a pair of bent protrusions are formed on the inner side of the facing side wall portion of the main body case so as to face the power source portion along the bottom surface portion and the When the projection is formed so as to project from both side surfaces of the power supply unit when it is moved to the side of the sidewall facing the open side of the sidewall, the bent projection is engaged. The power supply unit may be mounted in the case body.
Furthermore, in the amplifier case according to the present invention, when the lid portion is fitted on the case main body portion, a holding rib that holds and fixes the power source portion housed in the case main body portion includes the lid. It may be formed inside the part.
Furthermore, in the amplifier case of the present invention, the tip of the upper wall portion of the lid portion is extended to form an arc-shaped portion, and the lid portion is fitted to the case body portion by rotating the lid portion. At this time, the front end edge of the bottom surface portion may be in sliding contact with the inner peripheral surface of the arcuate portion, and the front end of the reinforcing wall formed on the back surface of the front end portion of the bottom surface portion may be in sliding contact.

  According to the present invention, the power supply unit can be accommodated in the case body using the space formed by rotating the lid. When the lid is rotated and closed, the used space disappears, so that the size of the amplifier case can be made the minimum necessary size that can accommodate the amplifier and the power supply. Further, by moving the power supply unit housed in the amplifier case along the bottom surface thereof, the projection of the power supply unit is engaged with the bent projection of the amplifier case, and the power supply unit is mounted. At this time, the signal input terminal of the power supply unit is connected to the amplifier so that power can be supplied to the amplifier. Furthermore, when the lid is rotated and closed, the holding rib formed inside the lid holds the power source, thereby stably attaching the detachable power source to the amplifier case. It can be stored. Furthermore, when the lid is rotated and fitted to the case body, the tip edge of the bottom surface and the bottom edge of the bottom surface are formed on the inner peripheral surface of the arc-shaped portion formed on the upper side wall of the lid. Since the tip of the reinforcing wall formed on the back surface of the tip is in sliding contact, the amplifier case can have a watertight structure having a waterproof structure.

FIG. 1 is a front view showing the entire configuration of the amplifier case according to the embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a bottom view thereof.
As shown in these drawings, the amplifier case 1 has a thin rectangular parallelepiped shape. The amplifier case 1 houses an amplifier as will be described later, and a power supply can be detachably accommodated. The amplifier case 1 includes a case main body 3 and a lid 2 that is fitted on the case main body 3. A pair of rotation support portions 4 are formed on one side of the lid portion 2, and the rotation support portions 4 are rotatable with respect to the case main body portion 3. A signal input terminal 5 and a signal output terminal 6 are provided on the lower surface of the case body 3, and when the power supply unit is housed, a power cable 7 is led out as shown. The signal input terminal 5 and the signal output terminal 6 are constituted by coaxial connectors so that a coaxial plug provided at the end of the coaxial cable can be attached.

The amplifier case 1 according to the present invention is capable of storing an amplifier and a power supply, and the usage mode will be described with reference to FIG. 4 showing the circuit configuration of the amplifier 31 and the power supply 40.
In the amplifying unit 31, the CATV signal input to the signal input terminal 5 is supplied to the amplifying circuit 31a via the capacitor C1 and is amplified to a predetermined level. The CATV signal amplified by the amplifier circuit 31a is output from the signal output terminal 6 via the capacitor C2. DC power is supplied from the power supply unit 40 to the amplifier circuit 31a. The power supply unit 40 includes a power supply circuit 40a that converts the supplied AC100V into a predetermined DC voltage, for example, + 15V. The DC power output from the power supply circuit 40a is a signal input terminal / power supply output terminal via the coil L2. 42. The CATV signal input from the signal input terminal / power supply output terminal 42 is not transmitted to the power supply circuit 40a due to the impedance of the coil L2, but is output from the signal output terminal 43 via the capacitor C3.

  Here, when the power supply unit 40 is housed in the amplifier case 1, the signal input terminal / power supply output terminal 42 is connected to the power supply input terminal 32 as indicated by a path a indicated by a dotted line. In this case, the DC power output from the signal input terminal / power output terminal 42 is supplied to the power input terminal 32 of the amplifier 31, and the DC power is supplied to the amplifier circuit 31a. The signal output terminal 6 is not supplied by being blocked by the diode D1. As a result, power is supplied from the power supply unit 40 accommodated in the amplifier case 1 to the amplification unit 31.

  When the power supply unit 40 is separated and installed away from the amplifier case 1, the signal input terminal / power supply output terminal 42 is connected to the signal output terminal 6 of the amplification unit 31 as shown by a path b indicated by a dotted line. Connected by coaxial cable. In this case, the DC power output from the signal input terminal / power output terminal 42 is supplied to the signal output terminal 6 of the amplifying unit 31, and the DC power is blocked by the capacitor C2 and amplified through the coil L1 and the diode D1. It is supplied to the circuit 31a. As a result, power is supplied from the power supply unit 40 set away from the amplifier case 1 to the amplification unit 31. The CATV signal output from the amplifier circuit 31a is blocked by the impedance of the coil L1 and output from the signal output terminal 6. The signal output terminal 6 and the signal input terminal / power output terminal 42 are connected by a coaxial cable, and the CATV signal supplied to the power supply unit 40 by this coaxial cable is output from the signal output terminal 43 via the capacitor C3. And supplied to a television device or the like.

Next, the internal structure of the case main body 3 in the amplifier case 1 is shown in FIG. 5, and the configuration of the amplifier case 1 with the lid 2 opened is shown in FIG.
The case body 3 is composed of a rectangular bottom surface 15 and a left side wall 13, a right side wall 14, and a lower side wall 16 that are formed upright from the three edges of the bottom surface 15. Thus, a storage space is formed inside. The amplifying unit 31 is housed in the lower part of the housing space of the case body 3, and the signal input terminal 5 and the signal output terminal 6 that protrude from the lower surface of the amplifying unit 31 are formed on the lower wall portion 16. It protrudes from the lower surface of the case body 3 through the through-hole. A side wall portion is not formed on the upper edge of the case body portion 3, but a reinforcing wall 19 is formed on the upper back surface of the bottom surface portion 15 instead. And the 1st L-shaped protrusion 11 and the 2nd L-shaped protrusion 12 are each formed in a pair so as to oppose the left side wall part 13 and the right side wall part 14 which are facing. Each of the first L-shaped protrusion 11 and the second L-shaped protrusion 12 is an L-shaped protrusion, and is a protrusion with which a protrusion formed on a power supply unit 40 described later is engaged. Further, support shafts 17 projecting toward the outer surface are respectively formed on the upper portions of the left side wall portion 13 and the right side wall portion 14. The rotation support portion 4 of the lid portion 2 is rotatably supported on the support shaft 17.

  Further, a holding portion 8 is formed on the outer surface of the bottom surface portion 15 of the case main body portion 3, and the holding portion 8 can be attached to an outer wall of a building or the like. The lid portion 2 is composed of a rectangular upper surface portion 21 and two opposing side wall portions 22, an upper side wall portion 23 and a lower side wall portion 26 which are formed upright from four edges of the upper surface portion 21. A storage space is formed inside. An arcuate portion 27 that is bent in an arc shape is formed at the tip of the upper side wall portion 23. The arcuate portion 27 is formed between the pair of rotation support portions 4. The lid portion 2 can rotate until the tip of the arcuate portion 27 comes into contact with the back surface of the bottom surface portion 15 of the case main body portion 3. In addition, a plurality of (for example, three) holding ribs 24 are formed in the upper side wall portion 23 on the inner side. The holding rib 24 is a rib that stably holds the power supply unit 40 accommodated in the case main body 3 when the lid 2 is fitted on the case main body 3. Further, a pair of locking pieces 25 are formed at the lower end of the upper surface portion 21. The engaging piece 25 engages with an engaging piece 18 formed to stand on the outer surface of the lower side wall portion 16 of the case main body 3 when the lid 2 is fitted on the case main body 3. It is a piece.

Next, the configuration of the power supply unit 40 is shown in FIGS. 7 is a front view showing the configuration of the power supply unit 40, FIG. 8 is a bottom view showing the configuration of the power supply unit 40, and FIG. 9 is a side view showing the configuration of the power supply unit 40.
As shown in these drawings, the power supply unit 40 is formed in an elongated rectangular parallelepiped shape, and is formed so that a pair of protrusions 41 protrude from both side surfaces. The cross-sectional shape of the protrusion 41 is an elongated rectangular shape. Further, a signal input terminal / power output terminal 42 and a signal output terminal 43 are provided so as to protrude from the lower surface of the power supply unit 40. The signal input terminal / power output terminal 42 and the signal output terminal 43 are constituted by coaxial connectors so that a coaxial plug provided at the end of the coaxial cable can be attached. Further, a power cable 7 to be attached to an AC 100V outlet is led out from the lower surface of the power supply unit 40. Furthermore, a pair of positioning pieces 44 are formed so as to protrude from the edge of the lower surface of the power supply unit 40 for positioning when housed in the amplifier case 1.

  Next, a procedure for housing the power supply unit 40 in the amplifier case 1 will be described with reference to FIGS. However, FIG. 10 is a side view showing a cross-sectional view of the amplifier case 1 for explaining a first procedure when the power supply unit 40 is housed in the amplifier case 1, and FIG. 11 is a front view thereof. 12 is a side view showing a cross-sectional view of the amplifier case 1 for explaining a second procedure when the power supply unit 40 is housed in the amplifier case 1, and FIGS. 13 and 14 are front views thereof. 15 is a side view showing a cross-sectional view of the amplifier case 1 for explaining a third procedure when the power supply unit 40 is housed in the amplifier case 1.

  When the power supply unit 40 is housed in the amplifier case 1, as shown in FIGS. 10 and 11, the lid 2 is rotated with respect to the case body 3, and the tip of the arcuate part 27 is the case body 3. The lid 2 is opened by rotating it until it contacts the back surface of the bottom surface portion 15. The fulcrum when rotating is the rotation support 4. By opening the lid portion 2 in this way, a space due to the storage space of the lid portion 2 is formed above the case main body portion 3. Therefore, the power supply unit 40 is accommodated in the amplifier case 1 as shown by a right-pointing arrow shown in FIG. 10 by using this space, and the back surface of the power supply unit 40 comes into contact with the bottom surface part 15 of the case body 3. Like that. This is the first procedure.

  Next, the power supply section 40 is slid downward along the bottom surface section 15 as indicated by the downward arrow shown in FIG. At this time, the four protrusions 41 provided on both side surfaces of the power supply unit 40 are respectively formed on the first L-shaped projection 11 and the second L-shaped projection 12 formed on the side walls 13 and 14 of the case main body 3. It engages and is regulated by being restricted from moving downward and forward. Further, the power supply unit 40 is also positioned with respect to the amplification unit 31 by the action of the positioning piece 44. Then, as shown in FIGS. 12 to 14, the signal input terminal / power output terminal 42 provided so as to protrude from the lower surface of the power supply unit 40 is inserted into the power input terminal 32 provided in the amplification unit 31, and the signal The output terminal 43 is inserted into the recess 33 formed in the amplifying unit 31. Thereby, the path a shown in FIG. 4 is realized. This is the second procedure. 13 shows a state where the cover of the amplifying unit 31 is attached, and FIG. 14 shows a state where the cover of the amplifying unit 31 is removed.

  Next, when the cover 2 is rotated to close, the state shown in FIG. 15 is obtained. In this case, the front ends of the pair of engaging pieces 18 formed at the front end portion of the lid portion 2 are engaged with the locking pieces 25 formed so as to protrude from the lower side wall portion 16 of the case main body portion 3. become. In this case, the inner peripheral surface of the arc-shaped portion 27 formed on the lid portion 2 is in sliding contact with the tip of the reinforcing wall 19 formed on the case main body portion 3, and further, the upper edge of the bottom surface portion 15. In addition, the inner peripheral surface of the arc-shaped portion 27 comes into sliding contact. Accordingly, the upper end portion of the bottom surface portion 15 becomes the waterproof wall 15a and the reinforcing wall 19 also becomes the waterproof wall, and the watertight amplifier case 1 in which the lid portion 2 is fitted to the case main body portion 3 is obtained. The power supply unit 40 is held by the plurality of holding ribs 24 formed on the inner side of the upper side wall portion 23 of the lid portion 2, and the four protruding portions 41, the first L-shaped projections 11, Due to the action of the 2L-shaped protrusion 12, the power supply unit 40 is stably held in the amplifier case 1 as shown in FIG. This is the third procedure. The holding rib 24 has a shape that matches the outer shape of the power supply unit 40.

  As can be understood with reference to FIG. 15, the signal input terminal / power output terminal 42 provided so as to protrude from the lower surface of the power supply unit 40 is slid so as to be inserted into the power supply input terminal 32 provided in the amplification unit 31. Despite this, there is no room for the slide. This is because the storage space is used when the lid 2 is opened as described above. As described above, according to the amplifier case 1 of the present invention, the size of the amplifier case 1 can be set to the minimum necessary size that can accommodate the amplifier unit 31 and the power supply unit 40. Even when the power supply unit 40 is housed in the amplifier case 1, the power is supplied to the amplifier unit 31 from the signal input terminal / power supply output terminal 42 that outputs power when the power supply unit 40 is separated. The need to provide a dedicated jack in the power supply unit 40 can be eliminated.

4 is realized by connecting the signal output terminal 6 and the signal input terminal / power supply output terminal 42 with a coaxial cable by installing the power supply unit 40 away from the amplifier case 1 and connecting the signal output terminal 6 to the signal input terminal / power supply output terminal 42. can do.
In the amplifier case 1 described above, the shape of the first L-shaped protrusion 11 and the second L-shaped protrusion 12 is not limited to the L shape, and may be a U shape or a U shape. That is, the shape of the first L-shaped protrusion 11 and the second L-shaped protrusion 12 only needs to be a shape that can regulate the engaging portion 41 in the forward direction and the downward direction.
Moreover, although the amplifier case 1 concerning this invention can be produced by shape | molding a synthetic resin, it is good also as a product made from aluminum die-casting.

  As described above, the amplifier case of the present invention is configured such that the power supply unit can be accommodated in the case body using the space formed by rotating the lid. When the lid is rotated and closed, the used space disappears, so that the size of the amplifier case can be made the minimum necessary size that can accommodate the amplifier and the power supply. Further, by moving the power supply unit housed in the amplifier case along the bottom surface thereof, the projection of the power supply unit is engaged with the bent projection of the amplifier case, and the power supply unit is mounted. At this time, the signal input terminal of the power supply unit is connected to the amplifier so that power can be supplied to the amplifier. Furthermore, when the lid is rotated and closed, the holding rib formed inside the lid holds the power source, thereby stably attaching the detachable power source to the amplifier case. It can be stored. Furthermore, when the lid is rotated and fitted to the case body, the tip edge of the bottom surface and the bottom edge of the bottom surface are formed on the inner peripheral surface of the arc-shaped portion formed on the upper side wall of the lid. Since the tip of the reinforcing wall formed on the back surface of the tip is in sliding contact, the amplifier case can have a watertight structure having a waterproof structure.

It is a front view which shows the whole structure of the amplifier case of embodiment of this invention. It is a side view showing the whole amplifier case composition of an embodiment of the invention. It is a bottom view which shows the whole structure of the amplifier case of embodiment of this invention. It is a figure which shows the circuit structure of the amplification part and power supply part which are accommodated in the amplifier case concerning embodiment of this invention. It is a figure which shows the internal structure of the case main-body part in the amplifier case concerning embodiment of this invention. In the amplifier case concerning embodiment of this invention, it is a side view shown with sectional drawing which shows the structure of the state which opened the cover part. It is a front view which shows the structure of the power supply part in the amplifier case concerning embodiment of this invention. It is a bottom view which shows the structure of the power supply part in the amplifier case concerning embodiment of this invention. It is a side view which shows the structure of the power supply part in the amplifier case concerning embodiment of this invention. In the amplifier case concerning embodiment of this invention, it is a side view shown with sectional drawing for demonstrating the 1st procedure at the time of accommodating a power supply part in an amplifier case. In the amplifier case concerning an embodiment of the invention, it is a front view for explaining the 1st procedure at the time of storing a power supply part in an amplifier case. In the amplifier case concerning embodiment of this invention, it is a side view shown with sectional drawing for demonstrating the 2nd procedure at the time of accommodating a power supply part in an amplifier case. In the amplifier case concerning embodiment of this invention, it is a front view for demonstrating the 2nd procedure at the time of accommodating a power supply part in an amplifier case. In the amplifier case concerning embodiment of this invention, it is a front view for demonstrating the 2nd procedure at the time of accommodating a power supply part in an amplifier case. In the amplifier case concerning embodiment of this invention, it is a side view shown with sectional drawing for demonstrating the 3rd procedure at the time of accommodating a power supply part in an amplifier case. It is a figure which shows the 1st aspect at the time of introduce | transducing the CATV signal into the indoor of a building from a CATV system. It is a figure which shows the 2nd aspect at the time of introduce | transducing a CATV signal from the CATV system in the indoor of a building.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Amplifier case, 2 cover part, 3 case main-body part, 4 rotation support part, 5 signal input terminal, 6 signal output terminal, 7 power supply cable, 8 holding part, 11 1st L-shaped protrusion, 12 2nd L-shaped protrusion, 13 left side Wall part, 14 Right side wall part, 15 Bottom face part, 15a Waterproof wall, 16 Lower side wall part, 17 Support shaft, 18 Engagement piece, 19 Reinforcement wall, 21 Upper surface part, 22 Side wall part, 23 Upper side wall part, 24 For holding Rib, 25 Locking piece, 26 Lower side wall part, 27 Arc-shaped part, 31 Amplifier part, 31a Amplifier circuit, 32 Power input terminal, 33 Recessed part, 40 Power supply part, 40a Power circuit, 41 Projection part, 42 Signal input terminal / Power supply output terminal, 43 Signal output terminal, 44 Positioning piece, 100 CATV line, 101 Branching device, 102 Amplifier, 103 Divider, 104 Power supply unit

Claims (4)

It has a storage space inside and a shape in which one side of the side wall is open, and an amplifier can be stored in the storage space, and a power supply unit that supplies power to the amplifier can be stored detachably. The case main body,
A lid that is rotatably supported on the one side of the case body, has a storage space inside, and is fitted to cover the open surface of the case body,
The signal input terminal consists of the power supply unit protruding from the lower part,
When the lid is opened by rotating the lid with respect to the case main body, the power supply is connected to the power source using the space formed near the one side by rotating the lid. After being housed in the housing space of the case body so as to be brought into contact with the bottom surface of the case body, the power supply unit is placed along the bottom surface and on the side of the side wall facing the open side of the side wall. By moving, the signal input terminal protruding from the lower part of the power supply unit is accommodated in the amplifier accommodated in the case main body, and power is supplied to the amplifier via the signal input terminal. An amplifier case characterized by that.   A pair of bent projections are formed on the inner side of the facing side wall portion of the main body case so as to face each other, and the power source portion extends along the bottom surface portion and on the opened side of the side wall portion. When the projection is formed so as to project from both side surfaces of the power supply unit when moved to the opposite side wall, the power supply unit is brought into the case body. 2. The amplifier case according to claim 1, wherein the amplifier case is attached.   A holding rib for holding and fixing the power supply unit housed in the case main body when the cover is fitted to the case main body is formed inside the lid. The amplifier case according to claim 1, wherein:   The tip of the upper side wall portion of the lid portion is extended to form an arc-shaped portion, and the inner peripheral surface of the arc-shaped portion when the lid portion is rotated and fitted to the case body portion 2. The amplifier case according to claim 1, wherein a tip end edge of the bottom surface portion is slidably contacted with a front end of a reinforcing wall formed on a back surface of the bottom end portion of the bottom surface portion. .

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