JP4191296B2 - Housing for series unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for drawing a television signal or the like from an outlet terminal provided on a wall surface or the like using a coaxial cable, and more particularly to a series unit housing in which the outlet terminal is formed.
[0002]
[Prior art]
Cable connection terminals provided on the wall surface, so-called outlet terminals, have a switch box or outlet box embedded in the wall surface, a series unit in which the outlet terminal is formed is provided, and a signal cable is connected to the series unit in the box. A signal is output from the outlet terminal. An example of this series unit housing is shown in FIG. In FIG. 4, 20 is an outlet terminal plug, 21 is an in-box connection terminal plug, and a signal is sent to the input terminal plug 21a to which a cable wired from another unit or the like is connected to the other unit. Output terminal plug 21b.
[0003]
The outlet terminal plug 20 is formed at substantially the center of the front surface of the housing 22, and the input terminal plug 21 a and the output connection terminal plug 21 b are formed by raising the lower surface 22 a of the housing 22 in a stepped manner. A step portion 23 is provided and formed on the step portion 23. Each of the plugs has a thread groove in the periphery for fastening a connector such as an F-type connector provided at the end of the cable, and the protruding length has the same dimension.
In FIG. 4, the protruding length L3 of the in-box connecting terminal plug 21 and the protruding length L4 of the outlet terminal tangent 20 are 9.5 mm, the housing depth E2 = 24 mm, the height H2 = 19 mm, and the height of the plug portion. The height H3 = 15 mm.
[0004]
Outlet boxes and switch boxes are not originally designed to route coaxial cables, so it is difficult to connect and wire coaxial cables and series units. By forming the input terminal 21a or the output terminal 21b to be a connection part in the outlet box by raising it by one stage, the space below the connection part is widened so that the cable can be easily connected and routed. .
[0005]
[Problems to be solved by the invention]
However, by forming the step portion on the bottom surface of the housing and raising the connection terminal plug 21 by one step as described above, the cable can be connected or routed relatively easily, but the step portion is formed. As a result, the space in the housing 22 of the series unit is reduced, and when a branch circuit or the like is incorporated, it is difficult to arrange the elements, or the connection operation between each connection terminal and the circuit in the housing is difficult. Assembling work could not be performed smoothly.
[0006]
In view of the above problems, the present invention has an object to provide a housing for a series unit that facilitates connection between the cable and the series unit and the routing of the cable, and also secures an element arrangement space in the series unit. .
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention of claim 1 is characterized in that an outlet terminal plug protrudes from the front surface of a substantially rectangular box and at least one plug protrudes from the flat lower surface of the box. A series unit housing that can be housed in a box or outlet box,
The outlet terminal plug is formed at a position eccentric from the center of the forming surface toward the lower surface, and the protruding length of the plug formed on the lower surface of the box is set to be longer than the protruding length of the outlet terminal plug. shorter,
Furthermore, a cylindrical protrusion continuous with the plug provided on the lower surface is formed on the bottom surface of the box, and the internal length of the plug is the same as the internal length of the outlet terminal plug. .
[0008]
According to a second aspect of the present invention, in the first aspect of the present invention, the box is configured not to protrude upward from the upper surface position of the unit cover that is mounted so as to cover the front surface thereof.
The unit cover is a member for connecting the series unit to a fixing member such as a mounting frame, and is a member that is fitted into the window of the decorative plate to prevent dust from entering and improve the appearance.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment embodying the present invention will be described in detail with reference to the drawings. 1A and 1B show a series unit housing according to the present invention, in which FIG. 1A is a plan view, FIG. 1B is a cross-sectional view taken along line AA, and the series unit housing 1 is a substantially rectangular box 1a and its front surface. It is comprised from the one plug 2 formed in 1b, and the two plugs 3 formed in the lower surface 1c.
[0012]
The series unit housing 1 is formed by zinc die casting, the box body 1a has an upper surface opened, and has a lid 4 that covers the opening and seals the inside. In FIG. 1A, the lid is omitted. Also, the housing may be made of aluminum die casting, but zinc die casting is better from the point of strength of the plug part, the lid is made of aluminum, and pure aluminum material, especially called O material, When press-fitted into the box opening, there is a stickiness in joining, and the shielding effect is excellent.
The plug 2 formed on the front surface is exposed to a wall or the like and is connected to a coaxial cable to form an outlet terminal for sending a signal to a device such as a television or a receiver. It is formed eccentrically below the front center position M of 1a, that is, toward the lower surface 1c.
[0013]
The plug 3 is a plug for connecting inside the box such as an outlet box, and is provided at a symmetrical position on the flat lower surface 1c. One of the plugs 3a is an input terminal plug 3a for forming an input terminal for sending a signal to the outlet terminal. The other is an output terminal plug 3b that forms an output terminal for sending a signal to another series unit. Both are formed as plugs for connecting coaxial cables.
[0014]
The protruding length L1 of the in-box connection plugs 3a and 3b is formed shorter than the protruding length L2 of the outlet terminal plug, and the bottom surface in the housing is continuous with the in-box connection plugs 3a and 3b. A cylindrical projecting portion 5 is formed on 1d, as if the in-box connection plugs 3a and 3b are buried in the box 1a. The internal length D1 of the in-box connection plugs 3a, 3b is formed to be the same as the internal length D2 of the outlet terminal plug 2. Incidentally, L1 = 7.5 mm, L2 = 10 mm, D1 = D2 = 11.9 mm, and the eccentricity j from the center position M = 1.5 mm.
[0015]
In this way, by connecting the plugs 3a and 3b for connecting in the box, that is, the protruding length L1 of the plug 3 to be shorter than the plug 2 for the outlet terminal, the connection space with the cable below the plug 3 and the cable routing space are reduced. Can be wide. The larger the hiding amount, that is, the height h of the protruding portion 5, is more effective, but it is convenient to set it to 2 to 4 mm in consideration of the size of the element to be mounted inside and the position of the circuit board.
Further, the outlet terminal plug 2 is eccentric, so that the cable connection position is further retracted, and the space below the plug 3 can be expanded. In addition, by forming the plugs 2 and 3 to have the same internal length, it is possible to use the same contact metal fitting 6 and spacer 7 (shown in FIG. 2) to be mounted inside when forming the connection terminal.
[0016]
Then, only the circular protrusion 5 continuous to the input terminal or output terminal plug 3 is formed on the bottom surface 1d of the housing, and the other bottom surface 1d remains flat, so that a circuit such as a branch circuit is formed. The assembled substrate can be easily assembled as shown in FIG. 2 is an explanatory front sectional view, 9 is a substrate, and 10 is an assembled element.
[0017]
FIG. 3A shows a state in which the series unit 13 formed by the series unit housing 1 is mounted in the outlet box 11, and FIG. 3B shows an enlarged view of the series unit 13. The series unit 13 with the unit cover 12 mounted on the front surface is connected to the mounting frame 14, and then the input cable 15 a and the output cable 15 b are connected and mounted in the outlet box 11. Then, the unit cover 12 including the outlet terminal 17 is exposed by the decorative board 16, and the other parts are hidden.
[0018]
The series unit 13 is mounted in this manner, and the outlet terminal plug 2 of the housing 1 is formed at a position that is eccentric downward from the center of the box, so that the mounting position in the box of the housing 1 moves upward. As a result, since the input terminal or output terminal plug 3 is in the retracted state, a large space for connecting or handling the cables can be obtained.
[0019]
Even when the outlet terminal is eccentric downward, the height of the box 1a is lower than the height of the unit cover 12 so that the box 1a does not protrude upward from the upper surface position when the unit cover 12 is mounted. It is formed and there is no inconvenience during construction. In this embodiment, the height difference H4 (shown in FIG. 3B) is 2 mm.
[0020]
Further, it is effective that the amount of eccentricity of the outlet terminal plug 2 is as large as the amount of the plug 3 for connecting in the box, but it is easy to connect the contact fitting of the outlet terminal to the internal circuit board or the like. Considering the characteristics, it is convenient to set the thickness to 1.5 mm to 2 mm. Also, there is no plug for the output terminal, and only one input terminal may be provided on the lower surface of the unit. When this unit is installed in the outlet box, etc., it depends on the cable handling and internal space conditions. The input terminal and output terminal may be turned upside down.
[0021]
【The invention's effect】
As described above in detail, according to the first aspect of the invention, since the outlet terminal plug on the front side of the box is eccentrically provided on the lower surface side, the entire housing moves upward when installed in the outlet box or the like. And since the front-end | tip of the plug formed in the box lower surface was retracted, the space under the plug can be widened. Therefore, the cable can be easily connected and routed, and the bottom surface remains flat, so that the space in the housing is not reduced, and necessary elements can be easily incorporated in the housing. .
Moreover, since the internal lengths of the outlet terminal plug and the lower surface side plug are the same, the same contact metal fittings, insulators and the like for constituting the connection terminal can be used.
[0022]
According to the invention of claim 2, in addition to the invention of claim 1, even if the outlet terminal is formed to be eccentric downward, there is no inconvenience at the time of construction to be incorporated in the outlet box or the like.
[Brief description of the drawings]
1A and 1B show an example of an embodiment of the present invention, in which FIG. 1A is a plan view and FIG.
FIG. 2 is an explanatory front sectional view showing a state in which a circuit board is mounted on the series unit housing of FIG. 1;
3 is a diagram illustrating a usage state of the series unit housing of FIG. 1, in which FIG. 3A is a diagram illustrating a state of mounting on the outlet box, and FIG. 3B is an enlarged view of the serial unit portion;
4A and 4B show a conventional series unit housing, in which FIG. 4A is a side view, and FIG. 4B is a front view.
[Explanation of symbols]
1. ・ Housing for series unit, 1a ・ ・ Box, 1b ・ ・ Front, 1c ・ ・ Bottom, 1d ・ ・ Bottom, 2 ・ ・ Connector for outlet terminal, 3 ・ ・ Connector, 3a ・ ・ For input terminal Plug, 3b ··· Plug for output terminal, 5 ·· Projection, 11 ··· Outlet box, 13 ·· Series unit, M · · Center position of box, j · · Eccentricity.

Claims (2)

An outlet terminal plug is provided on the front surface of the substantially rectangular box, and at least one plug is protruded from the flat lower surface of the box so that it can be accommodated in a switch box or an outlet box. And
The outlet terminal plug is formed at a position eccentric from the center of the forming surface toward the lower surface, and the protruding length of the plug formed on the lower surface of the box is set to be longer than the protruding length of the outlet terminal plug. shorter,
Furthermore, a cylindrical protrusion continuous with the plug provided on the lower surface is formed on the bottom surface of the box, and the internal length of the plug is the same as the internal length of the outlet terminal plug. Housing for series unit. The series unit housing according to claim 1, wherein the box does not protrude upward from an upper surface position of a unit cover mounted so as to cover a front surface thereof.

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