JP2008181875A - Series unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the solder connection of a circuit board housed in a case, and to further facilitate cable routing when using a thin box. <P>SOLUTION: A metallic housing case of a series unit body 1 in a series unit is constituted of a body case 7 and a case cover 8 divided into the depth direction so that a housed position of the circuit board 12 is shallowly exposed to a case opening. An escape hollow 10 for passing a cable therethrough is formed behind the housing case. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a serial unit that is installed on a wall surface of a room and supplies a television signal to a television receiver.

  Conventionally, this type of series unit is, for example, shown in FIG. In FIG. 8, the series unit 100 includes a series unit body 101, a mounting frame 102, and a terminal block 103, and a branch terminal 104 for connecting a television receiver provided on the front surface of the series unit body 101 is an opening of the terminal block 103. Located in. The serial unit main body 101 has a T-shaped case shape, and an input / output terminal 105 is mounted on the back as shown in the explanatory view on the back side of FIG.

  FIG. 10 is an exploded view of the series unit of FIGS. The serial unit main body 101 includes a T-type main body case 106 and a case cover 107 that are opened to the back. A circuit board 108 on which a branch circuit is mounted is accommodated in the main body case 106, and the branch terminal 104 and the input / output terminal 105 are connected to the circuit board 108 by soldering. The mounting frame 102 is made of a synthetic resin, and is provided with mounting ears 109 detachably by screwing or fitting at positions that are up and down in the mounted state, and attached to the metal frame at two positions on both sides. A metal frame locking portion 110 (see FIG. 8) and a mounting frame locking portion 111 for mounting a commercially available mounting frame for a wide plate are provided.

  Such a series unit is installed in different ways depending on the type of plate used, that is, the standard type and the wide type. FIG. 11 is an example of the mounting of a series unit using a standard type plate. First, the serial unit 100 has a one-branch terminal as an example, and an input coaxial cable 114 and an output coaxial cable 116 drawn from a wall surface or an opening 112 of an outlet box are connected by an F-type plug.

  Subsequently, the series unit 100 is attached to the wall surface or the opening 112 of the outlet box with a wood screw 118. Finally, the standard plate frame 120 is attached to the series unit 100 and the standard plate 122 is attached. FIG. 12 is an example of the attachment of the series unit using a wide type plate. When using a wide plate, first, as shown in FIG. 13, the upper and lower mounting ears 109 of the series unit 100 are removed using a screwdriver 126, and a commercially available wide mounting frame 128 is removed as shown in FIG. The series unit 100 is locked and attached to the mounting frame locking portions 111 formed at two positions on the upper and lower sides of the series unit 100.

Subsequently, as shown in FIG. 12, the coaxial cable 114 for input and the coaxial cable 116 for output drawn out from the opening 134 of the outlet box 132 are connected to the series unit 100 with an F-type plug. Subsequently, the series unit 100 is attached to the opening 134 of the outlet box 132 with a screw 136. Finally, the same commercially available decorative cover 138 is attached to the commercially available wide mounting frame 128, and the wide plate 142 is attached to the series unit 100 by the wide plate frame 140.
JP 08-264987 A

  However, when the series unit is assembled, the circuit board 108 is fitted into the main body case 106, and the circuit board 108, the branch terminal 104, and the input / output terminal 105 are soldered in the main body case 106. The circuit board 108 is compared from the case opening. The solder connection is very complicated because it is in a deep position and requires work from a narrow opening.

  Furthermore, although the serial unit is attached to an outlet box embedded in a wall surface, a thin outlet box may be used in recent years. For example, the standard type has a depth of 33 mm, whereas the thin type has a depth of 25 mm. In such a thin type, there is not enough room for the coaxial cable connected to the input / output terminal 105 to be routed in the box, and it becomes difficult to attach the series unit to the outlet box.

The present invention has been made in view of such conventional problems, and facilitates solder connection of a circuit board accommodated in a case, and further facilitates cable routing when using a thin type box. It is an object to provide a serial unit.

  In order to achieve this object, the present invention is configured as follows. First, a series unit of the present invention includes a circuit board storage case, a branch terminal disposed on the front surface of the storage case, a metal series unit body having an input / output terminal disposed behind the storage case, and a series unit body And a terminal block made of synthetic resin that can be freely attached to and removed from the front side of the terminal. The case cover has an input / output terminal cover part corresponding to the pair of input / output terminals provided on the main body case side, and is connected to the input / output terminals by stepping down between the input / output terminal cover parts. An escape recess for forming a coaxial cable is formed.

Here, the case cover has a T-shaped cover shape with a cover head portion and a cover body portion. Input / output terminal cover portions are formed on both sides of the cover head portion, and a step is lowered between the input / output terminal cover portions. By doing so, the relief recess is formed.

According to the present invention, it is possible to route the coaxial cable connected to the input / output terminal through the relief recess formed between the input / output terminals on the back of the main body, and even when using a thin type outlet box, Sufficient cable routing space is secured and can be easily attached. Furthermore, the division of the case main body and the case cover in the storage case of the series unit main body and the formation of the relief recess for the storage case are realized by forming the case main body and the case cover as a die-cast alloy molded product.

  FIG. 1 is an explanatory diagram of an embodiment of a series unit according to the present invention. In FIG. 1, the series unit of the present invention includes a metal series unit body 1 formed of a die-cast alloy and a terminal block 2 formed of a resin mold. The serial unit main body 1 includes a T-type storage case 3 and includes a T-type head 3a and a T-type body 3b. The T-shaped storage case 3 is divided into a main body case 7 and a case cover 8 in the depth direction, and is fixed by screws 9.

  On the main body case 7 side, mounting ears 6 are integrally formed at positions that are up and down in the installed state. Further, a pair of input / output terminals 4 are formed integrally with the main body case 7 side at the lower rear end portion of the T-type head 3 a of the main body case 7. In the portion of the T-shaped head 3 a, the case cover 8 forms a relief recess 10 for passing a coaxial cable at the center between the input / output terminals 4. Further, terminal block engaging portions 11 for engaging the engaging claws 16 of the terminal block 2 are formed on both side surfaces of the main body case 7 which becomes the T-shaped body portion 3 b of the T-shaped storage case 3.

  FIG. 2 is an exploded view of the series unit body 1 and the terminal block 2 of FIG. The serial unit main body 1 is divided into a main body case 7 and a case cover 8. The main body case 7 has a T-shaped storage case shape in which a case body portion 7b is connected to a case head 7a that opens to the back, and a T-type circuit board 12 is stored in the case. A pair of input / output terminals 4 are integrally formed at the lower rear end of the case head 7 a of the main body case 7. Further, branch terminals 5 are integrally formed in two places on the front side which is the lower side of the main body case 7. This branch terminal 5 will become more apparent in the later description.

  The division position in the depth direction of the main body case 7 and the case cover 8 constituting the T-shaped storage case 3 in FIG. 1 is a position where the circuit board 12 is stored in the main body case 7 as shown in FIG. The main body case 7 and the case cover 8 are divided so that the circuit board 12 is exposed. Here, the storage position of the circuit board 12 in the main body case 7 is determined by the length of solder connection of the terminal pin behind the branch terminal 5 provided at the front portion of the main body case 7 to the circuit board 12. That is, the terminal pin provided behind the branch terminal 5 has a predetermined length, and is soldered in a state of being inserted into the circuit board 12 like the terminal pin 5a.

  For this reason, the T-type storage case 3 of FIG. 1 is set so that the opening of the main body case 7 is, for example, about 1 mm higher than the storage position in the depth direction of the circuit board 12 determined by the length of the terminal pin 5a of the branch terminal 5. Are separated into a main body case 7 and a case cover 8. As described above, the main body case 7 and the case cover 8 are divided in the depth direction so that the circuit board 12 is positioned at a shallow position of the opening of the main body case 7. The lead plate 20 which is sufficiently exposed to the portion and bent downward from the terminal pins 5a and the terminal pins of the input / output terminal 4 can be easily soldered.

  The case cover 8 has a T-shaped cover shape including a cover head portion 8a and a cover body portion 8b. The cover head portion 8a has a cylindrical shape corresponding to the pair of input / output terminals 4 provided on the body case 7 side. Input / output terminal cover portions 8c are formed on both sides, and a recess 10 for passing the coaxial cable is formed by stepping down between the input / output terminal cover portions 8c. The case cover 8 is attached to the main body case 7 by screwing the screws 9 into the screw holes 27 of the main body case 7.

  The terminal block 2 that is detachably provided on the front surface of the series unit main body 1 constituted by the main body case 7 and the case cover 8 has a pair of terminal portions 15 formed inside a box-shaped frame 14 that opens to the back. A terminal hole 16 is opened in the terminal portion 15, and the terminal hole 16 is inserted into the branch terminal 5 protruding from the front surface of the main body case 7. In addition, a pair of engaging claws 17 are erected at the inner central portion of the terminal block 2, and are engaged with the terminal block engaging portions 11 provided on both sides of the case body portion 7 b of the main body case 7, so that the terminal block 2 Is assembled and fixed to the series unit main body 1 side.

  Furthermore, engaging pins 19 protrude from four corner portions inside the frame body 14. Corresponding to the engagement pin 19, an engagement hole 13 is provided at the base of the mounting ear 6 of the main body case 7, and the engagement pin 19 on the terminal block 2 side enters the engagement hole 13, The terminal block 2 can be positioned with respect to the case 7. Furthermore, wide plate engaging grooves 18 are formed at two locations on the upper and lower sides of the frame 14 in the terminal block 2, which will be described later when mounting a series unit using a wide plate as shown in FIG. The decorative cover for the wide plate to be clarified can be assembled by the engaging claw.

  FIG. 3 is a front view of the series unit body 1 used in the present invention as seen from the front side. A main body case 7 is located on the front side of the series unit main body 1, and branch terminals 5 are integrally provided at two locations of the main body case 7. Further, the mounting ears 6 are integrally formed at both ends of the main body case 7, and the engagement holes 13 into which the engagement pins 19 of the terminal block 2 of FIG. Is provided. A pair of terminal block engaging portions 11 are formed on both sides of the case body portion 7 b of the main body case 7.

  FIG. 4 is a rear view of the serial unit main body 1 used in the serial unit of the present invention as viewed from the back, and the case cover 8 of the serial unit main body 1 is located on the rear side. The case cover 8 is attached to the main body case 7 located at the front portion by screws 9, and a coaxial cable is connected to the input / output terminals 4 between the input / output terminal cover portions 8 c provided corresponding to the input / output terminals 4. An escape recess 10 for passing the coaxial cable is formed in parallel with the direction of the center line to be connected.

  FIG. 5 is a rear view of the series unit body 1 shown in FIG. 4 with the case cover 8 removed. By removing the case cover 8, the main body case 7 opens rearward, and the T-type circuit board 12 is accommodated in the main body case 7. The circuit board 12 is soldered through the terminal pins 5a protruding behind the pair of branch terminals 5 arranged in the front part of the case as shown in FIG. Further, the lead plate 20 is drawn behind the terminal pins of the input / output terminal 4 provided on the case head 7a of the main body case 7, and the lead plate 20 is soldered in a state of being inserted into the circuit board 12 while being bent. Has been.

  Further, as is apparent from the main body case 7 of FIG. 2, for example, a plurality of ground pins 28 are erected on the inner side of the main body case 7, and the ground pins 28 are also grounded as shown in FIG. Solder connected to the pattern. In this embodiment, the ground pin 28 is soldered at five locations on the T-type head side of the T-type circuit board 12 and at three locations on the T-type body portion.

  FIG. 6 is an explanatory diagram of a cable routing state when a coaxial cable is input / output connected to the series unit body 1 of the present invention. FIG. 6A shows a cable routing state as viewed from the rear of the series unit main body 1. For example, the coaxial cables 21 and 22 are drawn from the upper left side in the installed state and passed through the clearance recess 10 and then upward. It is bent and connected and fixed to the input / output terminal 4 by F-type plugs 23 and 24.

  FIG. 6 (B) is a side view of FIG. 6 (A), and shows a coaxial cable through a relief recess 10 passing through the center of the T-type head 3a of the T-type storage case 3 constituted by the main body case 7 and the case cover 8. 22 is drawn. Further, FIG. 6C is an end view seen from the right side of FIG. 6B, and a relief recess 10 is provided between the input / output terminal cover portion 8 c located on the input / output terminal 4 formed integrally with the main body case 7. The coaxial cables 21 and 22 are formed therethrough.

  The escape recess 10 provided behind the series unit main body 1 as shown in FIG. 6 can secure a sufficient cable routing space to connect to the input / output terminal 4 and can be attached to a thin outlet box having a depth of 25 mm, for example. Can also be done easily. FIG. 7 is an embodiment of the series unit of the present invention corresponding to the wide plate. When the series unit of the present invention is attached to the outlet box using the wide plate as in the conventional example of FIG. 11, in addition to the series unit main body 1 and the terminal block 2 as shown in FIG. A cover 24 is used.

  The series unit main body 1 and the terminal block 2 are the same as the embodiment of FIG. The wide plate-compatible decorative cover 24 has a cover body 24a of a size corresponding to the decorative cover used for attaching the wide plate in FIG. 12, and has a terminal hole 25 for taking out a branch terminal in the cover main body 24a. Engaging claws 26 for detachably attaching the wide plate-compatible decorative cover 24 to the terminal block 2 are erected on both sides of the terminal hole 25, respectively.

  A cover engaging groove 18 is formed on the side surface of the frame 14 in the terminal block 2 corresponding to the engaging claw 26 of the wide plate-compatible decorative cover 24, and the engaging claw 26 is provided in the cover engaging groove 18. By engaging, the wide plate-compatible decorative cover 24 can be assembled to the terminal block 2. In this way, the series unit corresponding to the wide plate may be composed of the three parts of the series unit main body 1, the terminal block 2 and the wide plate compatible decorative cover 24, and the commercially available mounting frame in the conventional example of FIG. Therefore, the number of parts is reduced and the cost is reduced, and the mounting work of the series unit using the wide plate can be facilitated. In the embodiment of the serial unit mounting structure using the wide plate of FIG. 7, the terminal block 2 and the wide plate-compatible decorative cover 24 are separate parts. May be formed integrally.

  In the embodiment of the series unit mounting structure using the wide plate of FIG. 7, since the commercially available wide mounting frame 128 is not used as shown in FIG. 13, the commercially available wide mounting frame is used as the series unit. It is not necessary to remove the mounting ear 109 shown in FIG. 14 for fitting. For this reason, in the serial unit main body 1 of the present invention, the mounting ear 6 can be formed integrally with the T-type storage case 3.

  Since the mounting ears 6 are formed integrally with the T-shaped storage case 3 as described above, the mounting ears 6 of the series unit main body 1 can be attached and detached as in the conventional serial unit mounting structure using a wide plate. There is no need for a structure, and accordingly, the structure of the series unit main body 1 is simplified and the cost can be reduced. Of course, since the operation | work which removes the attachment ear | edge part 6 at the time of attachment using a wide plate is not required, an attachment operation | work becomes correspondingly easy.

  In the above embodiment, the case where the pair of input / output terminals 4 is provided in the series unit main body 1 is taken as an example. However, the series unit located at the end may be one input / output terminal. Any one of the two input / output terminals 4 provided on the unit body 1 may be removed to form a blind cover. Moreover, although said embodiment has taken the case where the two branch terminals 5 are provided in the front of the serial unit main body 1 as evident from FIG. 3, the number of the branch terminals 5 is also determined suitably as needed. be able to.

  In the present embodiment, the terminal block 2 is directly attached to the front surface of the main body case 7. However, the present invention is not limited to this, and the terminal block 103 is attached via the mounting frame 102 as shown in FIG. The present invention can also be applied to a configuration that is attached to the front surface of the main body case 106.

  As described above, according to the present invention, the case cover is divided into the main body case and the case cover in the depth direction so that the circuit board is at a shallow exposed position with respect to the case opening of the series unit main body. With the circuit board removed, the circuit board is located in the immediate vicinity of the opening of the main body case, so that the soldering work of the circuit board can be performed very easily.

Further, the storage case of the serial unit main body of the present invention is a T-type storage case in which a T-type storage case and a T-type case body part are connected to each other at the center of the back of the T-type head where input / output terminals are located on both sides. Since the recess for passing the coaxial cable connected to the input / output terminal is formed, it is possible to secure a sufficient space for routing the coaxial cable behind the series unit in the assembled state of the series unit with respect to the outlet box. Even when mounting using a thin type outlet box, a sufficient cable routing space is secured and mounting is easy.

Explanatory drawing of embodiment of this invention used for attachment of a standard plate Assembly exploded view of FIG. Front view of the series unit body of FIG. Rear view of the series unit main body of FIG. The rear view which removed the cover of the series unit main body of FIG. Explanatory drawing of the routed state of the coaxial cable connected to the input / output terminal Explanatory drawing of embodiment of this invention which uses attachment of a wide plate Explanatory drawing of a conventional series unit viewed from the front Explanatory drawing of a conventional series unit viewed from behind Assembly exploded view of conventional series unit Explanatory drawing of conventional series unit mounting structure using standard plate Explanatory diagram of conventional series unit mounting structure using wide plate Explanatory drawing of the removal work of the mounting ear from the series unit Explanatory drawing of mounting work of commercially available mounting frame

Explanation of symbols

1: Series unit main body 2: Terminal block 3: T-type storage case 3a: T-type head 3b: T-type body part 4: Input / output terminals 4a, 5a: Terminal pins 6: Mounting ears 7: Main body case 7a: Case Head part 7b: Case body part 8: Case cover 8a: Cover head part 8b: Cover body part 8c: Input / output terminal cover part 9: Screw 10: Relief recess 11: Terminal block engaging part 12: Circuit board 13: Engagement Joint hole 14: Frame 15: Terminal portion 16: Terminal hole 17, 26: Engagement claw 18: Wide plate engagement groove 19: Engagement pin 20: Lead plate 21, 22: Coaxial cable 24: Cosmetic cover for wide plate 25: engagement hole 27: screw hole 28: ground pin

Claims (2)

A circuit board storage case, a branch terminal disposed on the front surface of the storage case, a metal series unit body provided with an input / output terminal disposed behind the storage case, and a detachable attachment on the front side of the series unit body In a series unit with a flexible synthetic resin terminal block,
The series unit body is composed of a body case and a case cover obtained by dividing the storage case in the depth direction,
The case cover has an input / output terminal cover portion corresponding to a pair of input / output terminals provided on the main body case side, and the input / output terminals are lowered by stepping down between the input / output terminal cover portions. A series unit having a relief recess for passing a coaxial cable to be connected.
  The series unit according to claim 1, wherein the case cover has a T-shaped cover shape provided with a cover head portion and a cover body portion, and the input / output terminal cover portions are formed on both sides of the cover head portion. A series unit characterized in that the relief recess is formed by stepping down between the input / output terminal cover portions.

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