JP7065391B2 - Turnout and intercom system - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act August 2017 (Heisei 29) Published in the "Mansion HA System D Series Exposed Thin Door Phone Slave" 1) August 31, 2017 http: // esctlg. Panasonic. biz / iportal / CatalogSearch. do? method = catalogSearchByAnyCategories & volumeID = PEWJ0001 & categoryID = 352980000 & designID = http: // esctlg. Panasonic. biz / iportal / CatalogViewInterfaceStartUpAction. do? method = startUp & mode = PAGE & catalogCategoryId = & catalogId = 45205404000 & pageGroupId = 1 & volumeID = PEWJ0001 & keyword = & categoryID = Panasonic. biz / scvb / a2A / openItemDetail? use_obligation = & item_cd = VGD2112 & item_no = VGD2112 & catalog_view_flg = 1 & contents_view_flg = 1 & close_flg = 1 & b_cd = 301 & hinban_kbn = 301 & hinban_kbn Panasonic. biz / es / ai / densetsu / image-dl / hinban / index. jsp? c = search & c_cd = 1509 & p = 1 & depth = 2 http: // www 2. Panasonic. biz / es / ai / densetsu / image-dl / img / rage / rage. html? Published at h = VGD2112 & f = VGD2112

The present invention relates to a turnout and an intercom system, and more particularly to a turnout having a plurality of lead wires and an intercom system including the plurality of turnouts.

As a conventional example, the video pair linear branch / distributor described in Patent Document 1 will be illustrated. The video pair wire branch / distributor described in Patent Document 1 can be used, for example, in an apartment building communication system. In the video pair wire type branch / distributor described in Patent Document 1, the electric wire is arranged in the groove for arranging the electric wire, and the core wire of the electric wire is inserted into the quick connection terminal to connect the electric wire.

Japanese Unexamined Patent Publication No. 08-171946

However, in the video pair wire branch / distributor described in Patent Document 1, if a force is applied to the wire due to pulling of the wire or the like, the wire (lead wire) may be disconnected from the video pair wire branch / distributor. there were.

An object of the present invention is to provide a turnout capable of reducing the possibility that the lead wire will come off and an intercom system including a plurality of the turnouts.

In order to solve the above problems, the turnout according to one aspect of the present invention includes a box-shaped main body, a pair of input lead wires, a pair of output lead wires, and a pair of branch lead wires. .. One end of the pair of input lead wires is located inside the main body, and the other end is located outside the main body. One end of the pair of output lead wires is electrically connected to the pair of input lead wires inside the main body portion, and the other end is located outside the main body portion. One end of the pair of branched lead wires is electrically connected to the pair of input lead wires inside the main body portion, and the other end is located outside the main body portion. Each of the pair of input lead wires, the pair of output lead wires, and the pair of branched lead wires has a first portion formed of a part of an intermediate portion between the one end and the other end, and the intermediate portion. Among them, a second part composed of a part different from the first part is included. The turnout includes a first line portion and a second line portion. The first portion of the pair of input lead wires, the pair of output lead wires, and the pair of branched lead wires is passed through the first wire section along the first direction. The second portion of the pair of input lead wires, the pair of output lead wires, and the pair of branch lead wires is passed through the second line portion along a second direction in which the second portion intersects the first direction. To. The body portion includes a body and a cover coupled to the body. The first wire passage portion and the second wire passage portion are formed between the body and the cover.

The intercom system according to one aspect of the present invention includes a plurality of the turnouts. The intercom system further includes a plurality of dwelling unit terminals and a communication device. The plurality of dwelling unit terminals are electrically connected to the plurality of turnouts. The communication device is electrically connected to the plurality of dwelling unit terminals via the plurality of turnouts and communicates with the plurality of dwelling unit terminals.

In the turnout and intercom system according to one aspect of the present invention, the possibility that the lead wire will come off can be reduced.

FIG. 1 is a perspective view seen from the front side of the turnout according to the first embodiment. FIG. 2 is an exploded view of the same turnout. FIG. 3 is a perspective view seen from the rear side of the same turnout. FIG. 4 is a perspective view showing a state in which the mounting portion is separated from the main body portion in the same turnout. FIG. 5 is a cross-sectional perspective view of the same turnout. FIG. 6 is a cross-sectional view of the same turnout. FIG. 7 is a circuit diagram of the same turnout. FIG. 8 is a block diagram of the intercom system according to the first embodiment. FIG. 9 is an exploded perspective view of the turnout according to the second embodiment. FIG. 10 is a plan view of the body of the turnout as above.

Hereinafter, the turnout and the intercom system according to the embodiment will be described with reference to the drawings. However, the embodiments described below are only part of the various embodiments of the present disclosure. The following embodiments can be variously modified according to the design and the like as long as the object of the present disclosure can be achieved.

The turnout described in the following embodiment is provided in an intercom system 1 (see FIG. 8) provided in an apartment house or the like. In the intercom system 1, a plurality of dwelling unit terminals 81 (see FIG. 8) and a communication device 82 (see FIG. 8) are electrically connected by bus wiring using a plurality of turnouts 2 (see FIG. 8). .. As a result, the communication device 82 can communicate with the plurality of dwelling unit terminals 81.

(1) Embodiment 1
(1.1) Appearance of the turnout As shown in FIGS. 1 and 2, the turnout 2 includes a housing 3, a pair of input lead wires L1 and L2, and a pair of output lead wires L3 and L4. The branch lead wires L5 and L6 are provided. The turnout 2 further includes a pair of terminal lead wires L7 and L8. Hereinafter, the input lead wires L1 and L2, the output lead wires L3 and L4, and the branch lead wires L5 and L6 are collectively referred to as lead wires L1 to L6. Further, the input lead wires L1 and L2, the output lead wires L3 and L4, the branch lead wires L5 and L6, and the terminal lead wires L7 and L8 are collectively referred to as lead wires L1 to L8.

The housing 3 has a box-shaped main body portion 30 and a mounting portion 4. The main body portion 30 includes a body 3a and a cover 3b coupled to the body 3a. The body 3a is formed in a box shape (rectangular parallelepiped shape) in which an opening 30a is formed on one surface 306 (see FIG. 3). The cover 3b is coupled to the body 3a so as to close the opening 30a.

The body 3a includes a plate-shaped facing portion 35a facing the cover 3b, and first, second, third and fourth side walls 31a, 32a, 33a and 34a. The first, second, third and fourth side walls 31a, 32a, 33a and 34a project from the peripheral edge of the facing portion 35a along the thickness direction of the facing portion 35a. The first side wall 31a and the second side wall 32a face each other, and the third side wall 33a and the fourth side wall 34a face each other.

Hereinafter, unless otherwise specified, in FIG. 2, the direction in which the cover 3b and the facing portion 35a face each other is the front-rear direction, the cover 3b side is the rear, and the facing portion 35a side is the front. The direction in which the first side wall 31a and the second side wall 32a face each other is the vertical direction, the first side wall 31a side is the upper side, and the second side wall 32a side is the lower side. The direction in which the third side wall 33a and the fourth side wall 34a face each other is the left-right direction, the third side wall 33a side is the left side, and the fourth side wall 34a side is the right side.

In the rectangular parallelepiped body 3a in which the opening 30a is formed, recesses 300 are formed in each of the regions corresponding to the four vertices on the side opposite to the opening 30a side (front side). Through holes 301 are formed in the bottom surfaces of these four recesses 300. That is, four through holes 301 are formed in the body 3a.

The mounting portion 4 is connected to the main body portion 30. More specifically, the mounting portion 4 is integrally formed with the main body portion 30.

The mounting portion 4 projects upward from the rear end of the first side wall 31a. The mounting portion 4 is formed in a plate shape having a mounting hole 40 penetrating the mounting portion 4. More specifically, the mounting portion 4 is formed in a U shape when viewed from the front-rear direction by forming the mounting holes 40 in a semicircular structure when viewed from the front-rear direction. The two ends of the U-shaped mounting portion 4 when viewed from the front-rear direction are connected to the first side wall 31a.

The housing 3 is attached to the attachment target, for example, by screwing the screw 46 passed through the attachment hole 40 of the attachment portion 4 into the attachment target (building wall or the like). The screw 46 is, for example, a wood screw.

As shown in FIG. 3, the rear surface 305 of the main body 30 includes one surface 306 on which the opening 30a of the body 3a is formed, and the rear surface 307 of the cover 3b inserted into the opening 30a. The rear surface 305 is formed in a flat shape. The mounting portion 4 projects from the main body portion 30 along the rear surface 305. More specifically, the rear surface 405 of the mounting portion 4 is flush with the rear surface 305 of the main body portion 30. The rear surface 305 is a surface facing the mounting target (building wall, etc.) of the housing 3.

As shown in FIGS. 1 and 2, the mounting hole 40 is a Daruma hole. The mounting hole 40 has a first hole 41 and a second hole 42 connected to the first hole 41. The second hole 42 is aligned with the first hole 41 in one direction (vertical direction). The second hole 42 is formed between the first hole 41 and the first side wall 31a. The first hole 41 and the second hole 42 are formed in the shape of an upwardly convex bell. The width D2 of the second hole 42 is larger than the width D1 of the first hole 41 in the direction (horizontal direction) orthogonal to the one direction (vertical direction) in which the first hole 41 and the second hole 42 are arranged side by side.

The mounting portion 4 has a separating portion 43. The mounting portion 4 can be separated from the main body portion 30 (body 3a) in the separating portion 43. The separation portion 43 includes two thin-walled portions 44. The two thin-walled portions 44 are formed at the boundary portion between the mounting portion 4 and the main body portion 30 (body 3a). That is, the two thin-walled portions 44 are formed one at each of the two ends of the mounting portion 4 connected to the first side wall 31a. The thickness of the two thin-walled portions 44 is smaller than that of the attachment portion 4 other than the two thin-walled portions 44. More specifically, the mounting portion 4 is recessed in the shape of a triangular groove in the side view in the two thin-walled portions 44.

The mounting hole 40 extends to a part of the boundary portion between the mounting portion 4 and the main body portion 30 (body 3a). That is, a separation portion 43 and a part of the mounting hole 40 are formed at the boundary portion of the mounting portion 4 with the main body portion 30 (body 3a).

The mounting portion 4 is bent with respect to the main body portion 30 (body 3a) around the two thin-walled portions 44, so that the two thin-walled portions 44 are broken. As a result, the mounting portion 4 is separated from the main body portion 30 (body 3a) at the separating portion 43 (two thin-walled portions 44) (see FIG. 4).

The body 3a further includes a boss portion 3c. The boss portion 3c is formed in a substantially bottomed cylindrical shape. The boss portion 3c has a screw hole 30c into which a screw 3d for connecting the cover 3b to the body 3a is screwed from the rear. The boss portion 3c protrudes from the outer surface (surface 330a) of the third side wall 33a. The axial direction of the boss portion 3c is along the front-rear direction and is substantially parallel to the outer surface (plane 330a) of the third side wall 33a.

FIG. 5 is a cross-sectional view of the turnout 2 cut on a surface orthogonal to the front-rear direction and a surface orthogonal to the vertical direction. FIG. 6 is a cross-sectional view of the turnout 2 cut at a plane orthogonal to the vertical direction. As shown in FIGS. 5 and 6, a plurality of (two in FIG. 5) insertion holes 341 are formed in the fourth side wall 34a of the body 3a. A plurality of claw portions 321 described later of the cover 3b are inserted into the plurality of insertion holes 341. Further, the body 3a further includes a holding claw 342 protruding from the fourth side wall 34a toward the inside of the main body portion 30, and a holding claw 332 protruding from the third side wall 33a toward the inside of the main body portion 30. include. The turnout 2 further includes a circuit mounting board 5. The circuit board 51, which will be described later, of the circuit board 5 is hooked on the holding claws 342 and 332, so that the circuit board 51 is held inside the main body 30.

As shown in FIGS. 1 and 2, the cover 3b includes a flat plate-shaped cover main body 31b whose thickness direction is along the front-rear direction, a peripheral wall portion 32b, a first protruding wall 33b, a second protruding wall 34b, and a stepped portion. 35b and. The turnout 2 further includes a protrusion 3e formed integrally with the cover 3b.

The cover body 31b is formed in a rectangular shape that closes the opening 30a of the body 3a. The peripheral wall portion 32b is formed in a region near the upper side, a region near the lower side, a right side, and a part of the left side in the peripheral edge of the cover main body 31b. The peripheral wall portion 32b projects forward from the cover main body 31b along the thickness direction of the cover main body 31b. The first protruding wall 33b is formed in a region near the upper side of the cover 3b. The first protruding wall 33b projects forward from the peripheral wall portion 32b along the thickness direction of the cover main body 31b. The second protruding wall 34b is formed in a region near the lower side of the cover 3b. The second protruding wall 34b projects forward from the peripheral wall portion 32b along the thickness direction of the cover main body 31b. The first and second protruding walls 33b and 34b are inserted into the body 3a through the opening 30a.

As shown in FIG. 5, the cover 3b further includes a plurality of (two in FIG. 5) claw portions 321 projecting outward from the peripheral wall portion 32b. The plurality of claw portions 321 are inserted into the plurality of insertion holes 341 of the body 3a.

As shown in FIGS. 1 and 2, the protruding portion 3e protrudes to the left from the peripheral edge of the cover main body 31b along the surface direction of the cover main body 31b. When the cover 3b is coupled to the body 3a, the protruding portion 3e is located outside the main body portion 30 (see FIG. 1). The protruding portion 3e has a screw insertion hole 30e facing the screw hole 30c of the boss portion 3c of the body 3a. With the plurality of claws 321 inserted into the plurality of insertion holes 341 of the body 3a, the screw 3d passed through the screw insertion holes 30e is screwed into the screw holes 30c of the boss portion 3c, so that the cover 3b becomes the body. Combined with 3a.

The protruding portion 3e includes a first wall portion 31e, a second wall portion 32e, a third wall portion 33e, and a fourth wall portion 34e. The first wall portion 31e is formed in a rectangular plate shape whose thickness direction is along the front-rear direction. The second wall portion 32e projects forward from the upper side of the first wall portion 31e. The third wall portion 33e projects forward from the left side of the first wall portion 31e. The fourth wall portion 34e projects forward from the lower side of the first wall portion 31e. Further, the third wall portion 33e has a recessed portion 330e recessed rearward from the front end. The third wall portion 33e has a chamfered portion 331e (see FIG. 6) having a chamfered shape at the corner of the right front end of the recessed portion 330e.

The step portion 35b is formed in the left region of the cover 3b. The step portion 35b projects forward from the cover main body 31b along the thickness direction of the cover main body 31b. The step portion 35b is shorter in the front-rear direction than the peripheral wall portion 32b. With the cover 3b coupled to the body 3a, a gap (through hole 302) is formed between the step portion 35b and the third side wall 33a of the body 3a (see FIGS. 1 and 5). That is, a through hole 302 is formed in the main body portion 30. The width of the through hole 302 in the front-rear direction is slightly larger than the diameter of the lead wires L1 to L8. The opening surface of the through hole 302 on the outer surface (surface 330a) of the third side wall 33a of the main body portion 30 faces the third wall portion 33e. That is, the third wall portion 33e is arranged at a position facing the opening surface of the through hole 302 outside the main body portion 30.

Of the main body 30, the surface 310a (outer surface of the first side wall 31a) connected to the mounting portion 4 is different from the surface 330a (outer surface of the third side wall) on which the through hole 302 is formed.

The circuit board 5 includes a circuit board 51 and a plurality of electronic components (for example, the transformer 67, the capacitors 61 to 64 and the resistors 65, 66 in FIG. 7). The circuit board 51 is held inside the main body 30. Lead wires L1 to L8 are connected to the circuit board 51. The lead wires L1 to L8 connected to the circuit board 51 are drawn out of the main body 30 through the through holes 302.

The lead wires L1 to L6 have the same configuration as each other. The terminal lead wires L7 and L8 have the same configuration as each other. In FIG. 2, only the input lead wire L1 is shown on behalf of the lead wires L1 to L6, and only the terminal lead wire L7 is shown on behalf of the terminal lead wires L7 and L8.

At both ends of the lead wires L1 to L6 (first end 101 and second end 102), the coating 103 is peeled off to expose the core wire 104 inside the coating 103. In the lead wires L1 to L6, the core wire 104 in a region having a length of, for example, about 2 mm is exposed from both ends. The first end 101 of the lead wires L1 to L6 is connected to the circuit board 51. More specifically, the first end 101 of the lead wires L1 to L6 is connected to the circuit board 51 via the board-in connector 52 (see FIG. 6).

At one end (first end 111) of the terminal lead wires L7 and L8, the coating 113 is peeled off to expose the core wire 114 inside the coating 113. In the terminal lead wires L7 and L8, the core wire 114 in a region having a length of, for example, about 2 mm is exposed from the first end 111. One end (first end 111) of the terminal lead wires L7 and L8 is connected to the circuit board 51. More specifically, the first end 111 of the terminal lead wires L7 and L8 is connected to the circuit board 51 via the board-in connector 52 (see FIG. 6).

In the terminal lead wires L7 and L8, the core wire 114 of a part (exposed portion 1150) of the intermediate portion 115 between one end (first end 111) and the other end (second end 112) is exposed. That is, in the terminal lead wires L7 and L8, the core wire 114 of a part (exposed portion 1150) different from the tip (first end 111 and second end 112) is exposed. More specifically, in the terminal lead wires L7 and L8, the coating 113 is stripped at the first end 111, the exposed portion 1150, and the region from the second end 112 to the exposed portion 1150. Further, in the terminal lead wires L7 and L8, the tape 116 is wound around the portion other than the first end 111 and the exposed portion 1150 in the portion where the coating 113 is peeled off. The tape 116 has electrical insulation. The tape 116 bundles a large number of thin wires constituting the core wire 114 inside the coating 113.

Therefore, the core wires 114 of the terminal lead wires L7 and L8 are exposed only at the first end 111 and the exposed portion 1150. When connecting the terminal lead wires L7 and L8 to the output lead wires L3 and L4, the operator removes the tape 116 to expose the core wire 114 inside the tape 116.

(1.2) Arrangement of Lead Wires Next, the arrangement of lead wires L1 to L8 in the turnout 2 will be described with reference to FIGS. 5 and 6. In FIGS. 5 and 6, only the input lead wire L1 out of the lead wires L1 to L8 is shown for simplification of the figure. In the following description, only the arrangement of the input lead wires L1 will be described, but the lead wires L1 to L8 are arranged in the same manner.

The input lead wire L1 to which the first end 101 (see FIG. 2) is connected to the circuit board 51 extends from the circuit board 51 and is passed through the through hole 302. Therefore, the first end 101 of the input lead wire L1 is located inside the main body 30, and the second end 102 is located outside the main body 30. The first portion 107, which is a part of the intermediate portion 105 between the first end 101 and the second end 102 of the input lead wire L1, is formed in the first passage portion S1 which is a space inside the through hole 302. Passed through. Further, the second portion 108, which is a part of the intermediate portion 105 of the input lead wire L1 and is different from the first portion 107, is passed through the second transmission portion S2 outside the main body portion 30. The second line portion S2 is surrounded by the first wall portion 31e, the second wall portion 32e, the third wall portion 33e, the fourth wall portion 34e (see FIG. 1), and the third side wall 33a of the main body portion 30. It is a space that is. That is, the third wall portion 33e forms the second line portion S2 between the third wall portion 33e and the third side wall portion 33a of the main body portion 30. The first line section S1 and the second line section S2 are connected to each other.

The main body portion 30 penetrates in the through hole 302 in the left-right direction. That is, the first line portion S1 inside the through hole 302 is a space along the left-right direction (first direction). The first portion 107 of the input lead wire L1 is passed through the first wire portion S1 along the left-right direction (first direction). That is, the first portion 107 of the input lead wire L1 is guided by the third side wall 33a and the step portion 35b around the through hole 302 inside the through hole 302, so that the first passage line is along the left-right direction. It is passed through the part S1.

When the cover 3b is connected to the body 3a, the second wire passage portion S2 is covered from the left side by the third wall portion 33e, and the second main body portion 30 is covered with the exception of the region where the through hole 302 is formed. It is covered from the right side by the stepped portion 35b of the three side walls 33a and the cover 3b. That is, the second line portion S2 is a space along the front-rear direction (second direction) that intersects the left-right direction (first direction). Further, the second line portion S2 is covered from the rear side by the first wall portion 31e, and is covered from above and below by the second wall portion 32e and the fourth wall portion 34e (see FIG. 1).

Therefore, in the input lead wire L1, the second portion 108 of the intermediate portion 105 is passed through the second transmission portion S2 along the front-rear direction (second direction). That is, since the second wall portion 32e, the third wall portion 33e, and the fourth wall portion 34e of the protruding portion 3e and the third side wall portion 33a of the body 3a are formed along the front-rear direction, the intermediate portion 105 The second portion 108 is guided by at least one of the second wall portion 32e, the third wall portion 33e, the fourth wall portion 34e, and the third side wall portion 33a, so that the second line portion S2 is guided along the front-rear direction. Is passed through. The second end 102 of the input lead wire L1 is, for example, drawn forward from the second lead wire portion S2.

When the input lead wire L1 is pulled out from the inside of the main body portion 30, the first portion 107 is passed through the first wire portion S1 along the left-right direction. The portion of the intermediate portion 105 between the first portion 107 and the second portion 108 is in contact with, for example, the third wall portion 33e, and bends so as to change from a direction along the left and right to a direction along the front and back. Further, when the input lead wire L1 is pulled in from the outside of the main body portion 30, the second portion 108 is passed through, for example, the second passage portion S2 along the front-rear direction, and the first portion 107 is passed along the left-right direction. It is passed through the first line section S1. Therefore, the portion of the intermediate portion 105 between the first portion 107 and the second portion 108 bends so as to change from the front-back direction to the left-right direction.

In this way, the intermediate portion 105 of the input lead wire L1 bends between the first portion 107 and the second portion 108 outside the main body portion 30. That is, since the first line portion S1 and the second line portion S2 intersect outside the main body portion 30, the intermediate portion 105 of the input lead wire L1 is the first line portion S1 and the second line portion S1. By being passed through the wire portion S2, it bends outside the main body portion 30.

As described above, the first portion 107 of the input lead wire L1 is passed through the first passage portion S1 along the left-right direction (first direction), and the second portion 108 is passed along the front-rear direction (second direction). It is passed through the two-passage section S2. Therefore, when the input lead wire L1 is pulled, the pulling force is likely to be dispersed in the left-right direction and the front-back direction, so that the possibility that the input lead wire L1 is detached from the circuit board 51 can be reduced. Further, when the input lead wire L1 is pulled, the second wall portion 32e, the third wall portion 33e, and the fourth wall portion 34e forming the first wire portion S1 and the second wire passage portion S2 (FIG. 1). When the lead wire L1 is caught on at least one of the third side wall 33a and the third side wall 33a, the force applied to the lead wire L1 near the circuit board 51 is reduced. This also reduces the possibility that the input lead wire L1 will come off the circuit board 51.

The distance between the through hole 302 and the cover main body 31b is smaller than the distance between the through hole 302 and the circuit board 51. Therefore, in the input lead wire L1, the first end 101 connected to the circuit board 51 is compared with the case where the distance between the through hole 302 and the cover main body 31b is larger than the distance between the through hole 302 and the circuit board 51. The bending radius near (see FIG. 2) can be made smaller than the bending radius near the through hole 302. As a result, the stress of the input lead wire L1 due to the bending of the input lead wire L1 near the first end 101 can be reduced. The input lead wire L1 of the present embodiment is connected to the circuit board 51 via the board-in connector 52. That is, the input lead wire L1 may be disconnected from the board-in connector 52 due to bending of the input lead wire L1 near the first end 101, or the input lead wire L1 may be fatigue-broken near the first end 101 connected to the board-in connector 52. It is possible to reduce the possibility of fatigue. The distance between the third side wall 33a located around the through hole 302 in the main body 30 and the board-in connector 52 is between the fourth side wall 34a on the opposite side of the through hole 302 and the board-in connector 52. Greater than the distance.

Further, the lead wires L1 to L8 are arranged side by side in the vertical direction in the first line portion S1 and the second line portion S2 (see FIG. 1).

An example of the procedure for assembling the turnout 2 will be described. First, the circuit board 51 to which the lead wires L1 to L8 are connected is held by the body 3a. Next, the lead wires L1 to L8 are pulled out of the body 3a via the region where the through hole 302 is formed. In this state, the cover 3b is coupled to the body 3a. As a result, the lead wires L1 to L8 are pulled out from the inside of the main body 30 to the outside through the through hole 302.

Next, the procedure for attaching the housing 3 to the attachment target will be described with reference to FIGS. 1 and 3. Here, the mounting target is the wall of the pipe shaft. The operator screwes the screw 46 into a plate material (wood board or the like) attached to the wall of the pipe shaft, and then passes the screw 46 through the second hole 42 of the attachment hole 40. Further, the housing 3 is moved so that the screw shaft of the screw 46 is passed through the first hole 41. As a result, the housing 3 is attached to the surface of the wall of the pipe shaft via the plate material. The operator does not have to screw the screw 46 into the wall of the pipe shaft. The rear surface 305 of the main body 30 of the housing 3 faces the surface of the wall of the pipe shaft with the plate material interposed therebetween.

(1.3) Circuit Configuration of Turnout As shown in FIG. 7, the circuit mounting board 5 has a pair of input connection ends E1 and E2, a pair of output connection ends E3 and E4, and a pair of branch connection ends E5. It further includes an E6, a pair of termination connection ends E7, E8, and a termination circuit 7. Hereinafter, the input connection ends E1, E2, the output connection ends E3, E4, the branch connection ends E5, E6, and the terminal connection ends E7, E8 are collectively referred to as connection ends E1 to E8.

The connection ends E1 to E8 are provided on the circuit board 51 (see FIG. 2) of the circuit mounting board 5. One end of the pair of input lead wires L1 and L2 (first end 101: see FIG. 2) is connected to the pair of input connection ends E1 and E2. One end (first end 101) of the pair of output lead wires L3 and L4 is connected to the pair of output connection ends E3 and E4. One end (first end 101) of the pair of branch lead wires L5 and L6 is connected to the pair of branch connection ends E5 and E6. One end (first end 111: see FIG. 2) of the pair of terminal lead wires L7 and L8 is connected to the pair of terminal connection ends E7 and E8. In this way, one end of each of the lead wires L1 to L8 is connected to the circuit board 51. Each connection end E1 to E8 is composed of, for example, a board-in connector 52 (see FIG. 6). That is, the lead wires L1 to L8 are connected to the circuit board 51 by the board-in connector 52.

Wiring W1 to W4 are formed on the circuit board 51 (see FIG. 2). The wirings W1 to W4 are formed of conductors printed on the circuit board 51. The wiring W1 electrically connects the input connection end E1 to the output connection end E3. The wiring W2 electrically connects the input connection end E2 to the output connection end E4. The wiring W3 is branched from the wiring W1 and electrically connects the input connection end E1 to the branch connection end E5 via a signal branch circuit 6 described later. The wiring W4 is branched from the wiring W2, and the input connection end E2 is electrically connected to the branch connection end E6 via the signal branch circuit 6. Therefore, one end of the input lead wires L1 and L2 (first end 101: see FIG. 2) is inside the main body 30 (see FIG. 1) via the wirings W1 to W4 of the circuit board 51, and the output lead wires L3. It is electrically connected to L4 and the branch lead wires L5 and L6.

The termination circuit 7 performs impedance matching of the circuit formed by the turnout 2. The termination circuit 7 includes a resistor 71 and a capacitor 72. The termination circuit 7 is a series circuit of the resistor 71 and the capacitor 72. The termination circuit 7 is electrically connected between the termination connection ends E7 and E8. The termination circuit 7 is non-polar. The capacitor 72 is, for example, a non-polar electrolytic capacitor.

The termination circuit 7 is electrically isolated from the wirings W1 and W2 that form a part of the trunk line TL1 (see FIG. 8) of the intercom system 1 (see FIG. 8). By connecting the output lead wires L3 and L4 to the terminal lead wires L7 and L8, the terminal circuit 7 can be electrically connected to the wirings W1 and W2.

The circuit mounting board 5 further includes a signal branching circuit 6. The signal branch circuit 6 includes four capacitors 61 to 64, two resistors 65 and 66, a transformer 67, two surge absorbers 68 and 69, trunk terminals Ta1 and Ta2, and branch terminals Tb1 and Tb2. And, including. The signal branch circuit 6 is electrically connected to the wirings W3 and W4 via the trunk terminals Ta1 and Ta2, and is electrically connected to the branch connection ends E5 and E6 via the branch terminals Tb1 and Tb2.

The transformer 67 has a primary winding on the main line terminals Ta1 and Ta2 sides, and has a secondary winding on the branch terminals Tb1 and Tb2 sides. Capacitors 61 and 62 are inserted between both ends of the primary winding of the transformer 67 and the main line terminals Ta1 and Ta2, and capacitors 63 are inserted between both ends of the secondary winding of the transformer 67 and the branch terminals Tb1 and Tb2. 64 is inserted. The resistors 65 and 66 are inserted between both ends of the primary winding of the transformer 67 and the capacitors 61 and 62.

The covers 103 and 113 (see FIG. 2) of the lead wires L1 to L8 are color-coded for each pair of connection ends E1 to E8 corresponding to the lead wires L1 to L8. Specifically, the pair of input lead wires L1 and L2 connected to the pair of input connection ends E1 and E2 have a blue coating. The pair of output lead wires L3 and L4 connected to the pair of output connection ends E3 and E4 have a white coating. The pair of branch lead wires L5 and L6 connected to the pair of branch connection ends E5 and E6 have a yellow coating. The pair of termination lead wires L7, L8 connected to the pair of termination connection ends E7, E8 have a black coating. In this way, the coatings 103 and 113 are pair-by-pair with a pair of input connection ends E1, E2, a pair of output connection ends E3, E4, a pair of branch connection ends E5, E6, and a pair of terminal connection ends E7, E8. It is a display unit that displays different colors. Thereby, the operator can identify the pair of input connection ends E1, E2, the pair of output connection ends E3, E4, the pair of branch connection ends E5, E6, and the pair of terminal connection ends E7, E8 for each pair. be.

(1.4) Configuration of the intercom system As shown in FIG. 8, the intercom system 1 communicates with a plurality of (three in FIG. 8) turnouts 2 and a plurality of (three in FIG. 8) dwelling unit terminals 81. The device 82 is provided. Further, the intercom system 1 further includes a shared terminal 83.

The plurality of dwelling unit terminals 81 are, for example, a plurality of intercom master units installed in the rooms of the plurality of dwelling units. The shared terminal 83 is, for example, a lobby intercom slave unit installed at a common entrance (lobby) of an apartment house. The communication device 82 relays the communication between the plurality of dwelling unit terminals 81 and the shared terminal 83. The communication device 82 is installed, for example, in the management room of an apartment house.

Hereinafter, the plurality of turnouts 2 may be referred to as a first turnout 2, a second turnout 2, ..., Respectively. Of the plurality of turnouts 2, the input lead wires L1 and L2 of the first turnout 2 (the lowest turnout 2 in FIG. 8) are connected to the communication device 82. The output lead wires L3 and L4 of the first turnout 2 are connected to the input lead wires L1 and L2 of the second turnout 2 (the central turnout 2 in FIG. 8). The output lead wires L3 and L4 of the second turnout 2 are connected to the input lead wires L1 and L2 of the third turnout 2. Similarly, in the fourth and subsequent turnouts 2, a plurality of turnouts 2 are sequentially connected by the input lead wires L1 and L2 and the output lead wires L3 and L4. Between the input lead wire L1 and the communication device 82 connected to each other, between the input lead wire L2 and the communication device 82 connected to each other, between the input lead wire L1 and the output lead wire L3 connected to each other, and. , Wiring Wt1 is connected between the input lead wire L2 and the output lead wire L4 connected to each other. That is, the intercom system 1 further includes a plurality of wirings Wt1.

As described above, the input lead wires L1, L2, the output lead wires L3, L4 and the wirings W1 and W2 (see FIG. 7) of the plurality of turnouts 2 and the plurality of wirings Wt1 form the trunk line TL1. There is. A plurality of turnouts 2 are electrically connected to the communication device 82 by the trunk line TL1.

The input lead wires L1 and L2 and the output lead wires L3 and L4 and the plurality of wirings Wt1 are directly connected by caulking using, for example, a crimp terminal. The input lead wires L1 and L2 and the output lead wires L3 and L4 may be connected to the plurality of wirings Wt1 via a terminal block or the like.

Of the plurality of turnouts 2, in the turnout 2 electrically farthest from the first turnout 2 (hereinafter referred to as the turnout 2), the output lead wires L3 and L4 of the turnout 2 are the turnouts. It is connected to the terminal lead wires L7 and L8 of 2. That is, the output connection ends E3 and E4 of the end turnout 2 are electrically connected to the end circuit 7 (see FIG. 7) via the end connection ends E7 and E8 of the end turnout 2. As a result, the trunk line TL1 is terminated in the termination circuit 7 of the termination turnout 2. In the turnout 2 of FIG. 7, the output lead wires L3 and L4 are connected to the terminal lead wires L7 and L8. The output lead wires L3 and L4 and the terminal lead wires L7 and L8 are directly connected by caulking, for example, using a crimp terminal. The output lead wires L3 and L4 and the terminal lead wires L7 and L8 may be connected via a terminal block or the like.

Since the termination circuit 7 is non-polar, the output connection end E3 may be electrically connected to the termination connection end E7, the output connection end E4 may be electrically connected to the termination connection end E8, or the output connection end E3 may be terminated. It may be electrically connected to the connection end E8 and the output connection end E4 may be electrically connected to the terminal connection end E7.

The plurality of turnouts 2 have a one-to-one correspondence with the plurality of dwelling unit terminals 81. The branch lead wires L5 and L6 of each turnout 2 are connected to the corresponding dwelling unit terminal 81. The communication device 82 is electrically connected to a plurality of dwelling unit terminals 81 via a plurality of turnouts 2. Further, the communication device 82 is electrically connected to the shared terminal 83. As a result, the plurality of turnouts 2 can transmit a communication signal between each dwelling unit terminal 81 and the communication device 82.

Wiring Wt2 is connected between the branch lead wire L5 connected to each other and the dwelling unit terminal 81, and between the branch lead wire L6 connected to each other and the dwelling unit terminal 81, respectively. That is, the intercom system 1 further includes a plurality of wiring Wt2. The branch lead wires L5 and L6 and the plurality of wirings Wt2 are directly connected by caulking, for example, using a crimp terminal. The branch lead wires L5 and L6 and the plurality of wirings Wt2 may be connected via a terminal block or the like.

The shared terminal 83 accepts a calling operation by designating a room number of a specific dwelling unit among a plurality of dwelling units. The communication device 82 stores a room number corresponding to a plurality of dwelling unit terminals 81 on a one-to-one basis. When the shared terminal 83 is called, the communication device 82 identifies the dwelling unit terminal 81 corresponding to the room number specified in the calling operation from among the plurality of dwelling unit terminals 81. The communication device 82 transmits a predetermined signal to the dwelling unit terminal 81 corresponding to the room number via one or a plurality of turnouts 2. When the dwelling unit terminal 81 receives a predetermined signal, it emits a ringing tone for calling a resident. Further, when the resident performs a predetermined operation on the dwelling unit terminal 81, the dwelling unit terminal 81 and the shared terminal 83 can communicate with each other via one or a plurality of turnouts 2 and a communication device 82. Mutual communication between the dwelling unit terminal 81 and the shared terminal 83 is performed by, for example, communication signals such as audio signals and video signals. Further, as the communication signal, for example, a digital signal is used.

(1.5) Modification Example of Embodiment 1 The following is a list of modification examples of Embodiment 1. The following modifications may be realized by combining them as appropriate.

Inside the main body 30, a configuration for guiding the lead wires L1 to L8 may be further provided. For example, a wall portion protruding from at least one of the body 3a and the cover 3b may be provided, and the wall portion may be configured to guide the lead wires L1 to L8. In this case, the wall portion may be formed, for example, along a plane orthogonal to the left-right direction, and may guide the lead wires L1 to L8 in the vertical direction and the front-back direction. That is, inside the main body portion 30, the space between the wall portion and the third side wall 33a of the body 3a serves as a passage portion for passing a part of the intermediate portion of the lead wires L1 to L8.

In short, in addition to the first line portion S1 and the second line portion S2 through which a part of the intermediate portion of the lead wires L1 to L8 is passed, another line portion may be provided.

Further, the termination circuit 7 may include at least one of the resistor 71 and the capacitor 72.

Further, the lead wires L1 to L8 are not limited to being connected to the circuit board 51 by the board-in connector 52. For example, the lead wires L1 to L8 may be connected to the circuit board 51 by a connector having a different shape, or may be directly connected to the circuit board 51 by soldering or the like without using the connector.

That is, the configuration of each connection end E1 to E8 is not limited to the board-in connector 52. The configuration of each connection end E1 to E8 may be, for example, a connector having a different shape, or a land formed on the circuit board 51 so that the lead wires L1 to L8 can be connected via a through hole or the like. You may.

Further, in the terminal lead wires L7 and L8 of the first embodiment, the coating 113 is peeled off at the first end 111, the exposed portion 1150, and the region from the second end 112 to the exposed portion 1150. Further, in the terminal lead wires L7 and L8, the tape 116 is wound around the portion other than the first end 111 and the exposed portion 1150 in the portion where the coating 113 is peeled off. On the other hand, in the terminal lead wires L7 and L8, only the coating 113 of the first end 111 and the coating 113 of the exposed portion 1150 are peeled off, leaving the coating 113 on the second end 112 side. You may. That is, the terminal lead wires L7 and L8 may be in a so-called semi-striped state.

Further, in each of the lead wires L1 to L6, similarly to the terminal lead wires L7 and L8, the core wire 104 of the first end 101 and the core wire of a part (exposed portion) different from the first end 101 and the second end 102. 104 and may be exposed. In this case, each of the lead wires L1 to L6 may be in a semi-striped state, or the second end 102 side of each of the lead wires L1 to L6 is similar to the terminal lead wires L7 and L8 of the first embodiment. The tape may be wrapped around.

The turnout 2 of the first embodiment is a two-wire signal line including a pair of input connection ends E1, E2, a pair of output connection ends E3, E4, a pair of branch connection ends E5, E6, and a pair of terminal connection ends E7, E8. However, the turnout is not limited to this, and a turnout for a 3-wire signal line may be used. That is, the turnout 2 may include another connection end in addition to the connection ends E1 to E8. Further, the turnout 2 may include another lead wire in addition to the lead wires L1 to L8.

Further, instead of connecting the connection ends E1 to E8 to each other using the lead wires L1 to L8, for example, the connection ends E1 to E8 may be connected to each other as follows. That is, the connection ends E1 to E8 may be connected to each other by using a conductor plate such as a copper plate instead of the lead wires L1 to L8. Further, a plurality of connectors electrically connected to the connection ends E1 to E8 may be provided in each turnout 2. Then, a connector electrically connected to the output connection ends E3 and E4 of one turnout 2 can be connected to a connector electrically connected to the terminal connection ends E7 and E8 of the turnout 2, or another connector can be connected. It may be connected to a connector electrically connected to the input connection ends E1 and E2 of the turnout 2. Similarly, the connection between the turnout 2 and the communication device 82 and the connection between the turnout 2 and the dwelling unit terminal 81 and the communication device 82 do not use the lead wires L1 to L8, for example. , Conductor plate or connector may be used.

Further, the lead wires L1 to L8 in the through hole 302 are not limited to being arranged in a row in the vertical direction. The width of the through hole 302 in the front-rear direction of the first embodiment is slightly larger than the diameter of the lead wires L1 to L8, whereas the width of the through hole 302 in the front-rear direction may be further increased. Then, in the through hole 302, the lead wires L1 to L8 may be arranged in the vertical direction and the front-rear direction. Alternatively, the lead wires L1 to L8 may be arranged in a row in the front-rear direction in the through hole 302.

Further, the main body portion 30 does not have to have the step portion 35b. In this case, the width of the through hole 302 in the front-rear direction can be increased as compared with the case where the main body portion 30 has the step portion 35b.

Further, a display unit that displays different colors for each pair on the pair of input connection ends E1 and E2, the pair of output connection ends E3 and E4, the pair of branch connection ends E5 and E6, and the pair of terminal connection ends E7 and E8. , The coating is not limited to the lead wires L1 to L8. For example, the connection ends E1 to E8 may be configured by terminals provided on the terminal block, and the terminal block may be used as a display unit. That is, the terminal block displays different colors for each pair at the pair of input connection ends E1, E2, the pair of output connection ends E3, E4, the pair of branch connection ends E5, E6, and the pair of terminal connection ends E7, E8. do it. Specifically, the input connection ends E1 and E2 are provided on the blue terminal block, the output connection ends E3 and E4 are provided on the white terminal block, and the branch connection ends E5 and E6 are provided on the yellow terminal block. The terminal connection ends E7 and E8 may be provided on the black terminal block. Alternatively, instead of color-coding the terminal block, the terminal block cover may be color-coded. That is, the cover of the terminal block may be used as the display unit. Further, not limited to the terminal block and the cover of the terminal block, the members provided in the vicinity of the connection ends E1 to E8 are provided with a pair of input connection ends E1, E2, a pair of output connection ends E3, E4, and a pair of branches. The connection ends E5 and E6 and the pair of terminal connection ends E7 and E8 may be color-coded and used as a display unit.

Also, instead of displaying different colors for each pair on the pair of input connection ends E1, E2, the pair of output connection ends E3, E4, the pair of branch connection ends E5, E6, and the pair of terminal connection ends E7, E8. Each pair may display a different pattern, character, figure or symbol. For example, a pattern, a character, a figure, or a symbol is formed on a member provided in the vicinity of each of the connection ends E1 to E8, such as a coating of lead wires L1 to L8, a terminal block provided with connection ends E1 to E8, or a cover of the terminal block. May be attached.

In short, the display unit displays differently for each pair on the pair of input connection ends E1, E2, the pair of output connection ends E3, E4, the pair of branch connection ends E5, E6, and the pair of terminal connection ends E7, E8. Just do it. The different display for each pair is, for example, a different color, pattern, character, figure or symbol for each pair, or a combination thereof.

Further, the screw 46 is not limited to the wood screw, and may be another type of screw. For example, the screw 46 may be a tapping screw.

Further, the shape of each configuration of the turnout 2 is not limited to the shape shown in the first embodiment. For example, in the first embodiment, the structure formed in a rectangular shape may be formed in a square shape. Further, in the first embodiment, the structure formed in the shape of a rectangular parallelepiped may be formed in the shape of a cube.

(1.6) Summary of Embodiment 1 As described above, the turnout 2 according to the present embodiment includes a box-shaped main body portion 30, a pair of input lead wires L1 and L2, and a pair of output lead wires L3. , L4 and a pair of branch lead wires L5, L6. One end (first end 101) of the pair of input lead wires L1 and L2 is located inside the main body portion 30, and the other end (second end 102) is located outside the main body portion 30. One end (first end 101) of the pair of output lead wires L3 and L4 is electrically connected to the pair of input lead wires L1 and L2 inside the main body 30, and the other end (second end 102) is the main body. Located outside of 30. One end (first end 101) of the pair of branch lead wires L5 and L6 is electrically connected to the pair of input lead wires L1 and L2 inside the main body 30, and the other end (second end 102) is the main body. Located outside of 30. Each of the pair of input lead wires L1 and L2, the pair of output lead wires L3 and L4, and the pair of branch lead wires L5 and L6 is a first portion 107 composed of a part of an intermediate portion 105 between one end and the other end. And the second part 108 of the intermediate part 105, which is a part different from the first part 107. The turnout 2 includes a first line portion S1 and a second line portion S2. The first portion 107 of the pair of input lead wires L1, L2, the pair of output lead wires L3, L4, and the pair of branch lead wires L5, L6 is passed through the first wire portion S1 along the first direction. .. In the second connection portion S2, a second direction in which the second portion 108 of the pair of input lead wires L1, L2, the pair of output lead wires L3, L4 and the pair of branch lead wires L5, L6 intersects the first direction. It is passed along.

According to the above configuration, in the pair of input lead wires L1, L2, the pair of output lead wires L3, L4 and the pair of branched lead wires L5, L6 (lead wires L1 to L6), the first portion 107 of the intermediate portion 105. Is passed through the first line section S1 along the first direction, and the second portion 108 is passed through the second line section S2 along the second direction. The first direction and the second direction intersect each other. Therefore, when a force is applied to the lead wires L1 to L6 by pulling or the like, the force applied to the lead wires L1 to L6 is likely to be dispersed in the first direction and the second direction. As a result, the lead wires L1 to L6 can be disconnected from the position where one end (first end 101) of the lead wires L1 to L6 is connected, as compared with the case where the first direction and the second direction are the same direction. The sex can be reduced.

Further, in the turnout 2 according to the present embodiment, in each of the pair of input lead wires L1 and L2, the pair of output lead wires L3 and L4, and the pair of branch lead wires L5 and L6, the intermediate portion 105 is the first portion. It is preferable to bend between the 107 and the second portion 108 outside the main body portion 30.

According to the above configuration, the design of the internal shape of the main body 30 is compared with the case where the intermediate portion 105 bends between the first part 107 and the second part 108 inside the main body 30 instead of outside. The degree of freedom can be increased.

Further, in the turnout 2 according to the present embodiment, it is preferable that the main body portion 30 is formed with a through hole 302. The through hole 302 constitutes at least a part of the first line portion S1. It is preferable that the turnout 2 further includes a wall portion (third wall portion 33e). The wall portion is arranged at a position facing the opening surface of the through hole 302 outside the main body portion 30, and forms a second wire passage portion S2 with the main body portion 30.

According to the above configuration, the wall portion (third wall portion 33e) faces the opening surface of the through hole 302, so that the internal configuration of the main body portion 30 at the back of the through hole 302 (lead wires L1 to L6, etc.) Can be protected.

Further, it is preferable that the turnout 2 according to the present embodiment further includes a circuit board 51. The circuit board 51 is held inside the main body 30, and wirings W1 to W4 are formed. One end (first end 101) of each of the pair of input lead wires L1 and L2, the pair of output lead wires L3 and L4, and the pair of branch lead wires L5 and L6 is connected to the circuit board 51. The pair of input lead wires L1 and L2 are electrically connected to the pair of output lead wires L3 and L4 and the pair of branch lead wires L5 and L6 via the wirings W1 to W4 of the circuit board 51.

According to the above configuration, the pair of input lead wires L1 and L2 are electrically connected to the pair of output lead wires L3 and L4 and the pair of branch lead wires L5 and L6 via the wirings W1 to W4 of the circuit board 51. Has been done. Therefore, compared with the case where the pair of input lead wires L1 and L2 are directly connected to the pair of output lead wires L3 and L4 and the pair of branched lead wires L5 and L6, the pair of input lead wires L1 and L2 and the pair of outputs Electrical connection with lead wires L3, L4 and a pair of branched lead wires L5, L6 can be easily realized.

Further, the intercom system 1 according to the present embodiment includes a plurality of turnouts 2. The intercom system 1 further includes a plurality of dwelling unit terminals 81 and a communication device 82. The plurality of dwelling unit terminals 81 are electrically connected to the plurality of turnouts 2. The communication device 82 is electrically connected to the plurality of dwelling unit terminals 81 via the plurality of turnouts 2 and communicates with the plurality of dwelling unit terminals 81.

According to the above configuration, when a force is applied to the lead wires L1 to L6 due to pulling or the like, the force applied to the lead wires L1 to L6 is dispersed in the first direction and the second direction intersecting the first direction. Easy to do. As a result, the lead wires L1 to L6 can be disconnected from the position where one end (first end 101) of the lead wires L1 to L6 is connected, as compared with the case where the first direction and the second direction are the same direction. The sex can be reduced.

(2) Embodiment 2
Next, the turnout 2a according to the second embodiment will be described with reference to FIGS. 9 and 10. The same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The turnout 2a of the second embodiment can be used in place of the turnout 2 (see FIG. 8) of the intercom system 1 (see FIG. 8) of the first embodiment.

(2.1) Appearance Shape of Turnout In the turnout 2a, the housing 9 corresponds to the housing 3 of the first embodiment, but the shape is different from that of the housing 3.

The housing 9 has a main body 90. In the present embodiment, the main body 90 constitutes the entire housing 9. The main body 90 includes a body 9a and a cover 9b coupled to the body 9a. Since the cover 9b has the same shape as the body 9a, the description of the cover 9b will be omitted below as appropriate. The cover 9b is arranged in a direction rotated by 180 ° with respect to the body 9a.

The body 9a is formed in a box shape (rectangular parallelepiped shape) having an opening 90a formed on one surface. The body 9a includes a plate-shaped facing portion 95a and first, second, third and fourth side walls 91a, 92a, 93a and 94a. The opening 90a is formed in a region facing the facing portion 95a. The first, second, third and fourth side walls 91a, 92a, 93a and 94a project from the peripheral edge of the facing portion 95a along the thickness direction of the facing portion 95a. The first side wall 91a and the second side wall 92a face each other, and the third side wall 93a and the fourth side wall 94a face each other.

The body 9a further includes two holding portions 96a protruding from the facing portion 95a toward the opening 90a along the thickness direction of the facing portion 95a. Each holding portion 96a has a base 961 and four ribs 962, respectively. The base 961 and each rib 962 are formed in a plate shape. The base 961 of one of the two holding portions 96a faces the first side wall 91a, and the base 961 of the other holding portion 96a faces the second side wall 92a. In each holding portion 96a, the four ribs 962 project from the base 961 along the thickness direction of the base 961.

The circuit board 51 of the circuit board 5 is held so as to be sandwiched between two ribs 962 of one holding portion 96a of the body 9a. Further, the circuit board 51 is held so as to be sandwiched between the two ribs 962 of the other holding portion 96a of the body 9a. Further, the circuit board 51 is similarly held in the cover 9b so as to be sandwiched between the two ribs in each of the two holding portions.

The body 9a further includes a hooking portion 97a and a hooking claw 98a. The hook portion 97a is formed in a square cylinder shape and protrudes from the first side wall 91a. That is, a passage hole 970a, which is a through hole, is formed in the hook portion 97a. The hook claw 98a is formed in the shape of a hook. Similarly, the cover 9b also includes a hooking portion 97b in which the passage hole 970b is formed, and a hooking claw 98b.

The cover 9b is coupled to the body 9a as follows. The hook claw 98a of the body 9a is passed through the passage hole 970b of the cover 9b and hooked on the hook portion 97b of the cover 9b. Further, the hook claw 98b of the cover 9b is passed through the passage hole 970a of the body 9a and hooked on the hook portion 97a of the body 9a.

A through hole 950 is formed in the facing portion 95a of the body 9a. The through hole 950 is formed at a corner of a rectangular facing portion 95a. The through hole 950 penetrates the facing portion 95a in the thickness direction.

A through hole 951 connected to the through hole 950 is formed in the second side wall 92a. The through hole 951 penetrates the second side wall 92a in the thickness direction.

Further, the cover 9b is also formed with a through hole 954 and a through hole 955 similar to the through hole 950 and the through hole 951 of the body 9a.

(2.2) Arrangement of lead wires Next, the arrangement of lead wires L1 to L8 in the turnout 2a will be described. 9 and 10 show only the input lead wire L1 and the terminal lead wire L7 among the lead wires L1 to L8 for the sake of simplification. In the following description, only the arrangement of the input lead wires L1 will be described, but the lead wires L1 to L8 are arranged in the same manner.

The first end 101 of the input lead wire L1 is connected to the circuit board 51 via the board-in connector 52. The input lead wire L1 extends from the circuit board 51 and is passed through the through hole 951. That is, the second end 102 of the input lead wire L1 is pulled out of the main body 90 through the through hole 951. The intermediate portion 105 between the first end 101 and the second end 102 of the input lead wire L1 is a space inside the wire passage portions S3 and S4 inside the main body portion 90 and the through hole 951. It is passed through the wire portion S5.

The wire passage portion S3 is a space between the rib 962 of the holding portion 96a and the third side wall 93a in the space inside the body 9a of the main body portion 90. That is, the line portion S3 is a space along the vertical direction of the paper surface of FIG. The predetermined portion 203 of the intermediate portion 105 of the input lead wire L1 is guided by the rib 962 and the third side wall 93a, and is passed through the wire passage portion S3 along the vertical direction of the paper surface.

The wire passage portion S4 is a space between the base portion 961 of the holding portion 96a and the second side wall 92a in the space inside the body 9a of the main body portion 90. That is, the line portion S4 is a space along the left-right direction of the paper surface that intersects the vertical direction of the paper surface of FIG. The predetermined portion 204 of the intermediate portion 105 of the input lead wire L1 is guided by the base portion 961 and the second side wall 92a, and is passed through the wire passage portion S4 along the left-right direction of the paper surface.

The wire passage portion S5 is a space along the vertical direction of the paper surface that intersects the left and right direction of the paper surface of FIG. The predetermined portion 205 of the intermediate portion 105 of the input lead wire L1 is guided by the second side wall 92a around the through hole 951 inside the through hole 951 to the through portion S5 along the vertical direction of the paper surface. Be passed. The second end 102 of the input lead wire L1 is drawn out from the wire passage portion S5, for example, below the paper surface.

The wire passage portion S3 and the wire passage portion S4 are connected to each other and intersect each other inside the main body portion 90. That is, the wire passage portion S3 and the wire passage portion S4 intersect between the body 9a and the cover 9b. Further, the wire passage portion S4 and the wire passage portion S5 are connected to each other and intersect each other inside the main body portion 90. That is, the wire passage portion S4 and the wire passage portion S5 intersect between the body 9a and the cover 9b. Therefore, the intermediate portion 105 of the input lead wire L1 bends inside the main body portion 90 by being passed through the wire passage portions S3, S4, and S5.

As described above, the intermediate portion 105 of the input lead wire L1 is along the paper surface vertical direction in the wire passage portions S3 and S5, and along the paper surface left and right direction in the wire passage portion S4. Therefore, when the input lead wire L1 is pulled, the pulling force is likely to be dispersed in the vertical direction and the horizontal direction, so that the possibility that the input lead wire L1 is detached from the circuit board 51 can be reduced. Further, when the input lead wire L1 is pulled, at least one of the ribs 962, the third side wall 93a, the base 961, the second side wall 92a, and the second side wall 92a forming the wire passage portions S3, S4, and S5. When the lead wire L1 is caught in the lead wire L1, the force applied to the lead wire L1 near the circuit board 51 is reduced. This also reduces the possibility that the input lead wire L1 will come off the circuit board 51.

The line sections S3, S4, and S5 correspond to the first line section or the second line section, respectively. Looking at the line section S3 as the first line section and the line section S4 as the second line section, the predetermined portion 203 passed through the first line section is the first along the vertical direction of the paper surface of FIG. It is passed through one line section. The predetermined portion 204 passed through the second line portion is passed through the second line portion along the left-right direction of the paper surface intersecting the vertical direction of the paper surface. Further, the first line portion and the second line portion are located inside the main body portion 90. More specifically, the first line portion and the second line portion are formed between the body 9a and the cover 9b.

Further, when the line section S4 is viewed as the first line section and the line section S5 is viewed as the second line section, the predetermined portion 204 passed through the first line section is along the left-right direction of the paper in FIG. The predetermined portion 205, which is passed through the first line portion and is passed through the second line portion, is passed through the second line portion along the vertical direction of the paper surface which intersects the left-right direction of the paper surface.

Since the body 9a and the cover 9b have the same shape, the cover 9b has the same configuration as the rib 962, the third side wall 93a, the base 961, the second side wall 92a, and the through hole 951 that guide the intermediate portion 105 of the input lead wire L1. Has been done. That is, the cover 9b also has the wire passage portions S3, S4, and S5. Therefore, the work of passing the intermediate portion 105 of the input lead wire L1 through the wire passage portions S3, S4, and S5 can be performed on the body 9a or the cover 9b. Further, the work of passing the intermediate portion 105 of the input lead wire L1 through the wire passage portions S3, S4, and S5 can be performed even before the cover 9b is connected to the body 9a.

An example of the procedure for assembling the turnout 2 will be described. First, the circuit board 51 to which the first end 101 of the input lead wire L1 is connected is held by the body 9a. Next, the intermediate portion 105 of the input lead wire L1 is passed through the wire passage portions S3 and S4. Further, the second end 102 of the input lead wire L1 is pulled out of the body 9a through the through hole 951. In this state, the cover 9b is coupled to the body 9a. As a result, the input lead wire L1 is pulled out from the inside of the main body 90 to the outside through the through hole 951. The circuit board 51 may be held by the cover 9b, and the input lead wire L1 may be pulled out of the cover 9b through the through hole 955 of the cover 9b.

The input lead wire L2, the output lead wire L3, L4, the branch lead wire L5, L6, and the terminal lead wire L7, L8 are also passed through the wire passage portions S3, S4, S5 in the same manner as the input lead wire L1. Of the lead wires L1 to L8, some of the lead wires are pulled out from the through hole 951 of the body 3a to the outside of the main body 90, and the remaining lead wires are pulled out from the through hole 955 of the cover 3b to the outside of the main body 90. You may withdraw.

Further, instead of the through hole 951, a part or all of the lead wires L1 to L8 may be passed through the through hole 950. That is, the space inside the through hole 950 may be used as a wire passage portion. Similarly, a part or all of the lead wires L1 to L8 may be passed through the through hole 954 instead of the through hole 955. That is, the space inside the through hole 954 may be used as a wire passage portion.

(2.3) Modification Example of Embodiment 2 Hereinafter, a modification of Embodiment 2 will be described.

Instead of the base 961 and the rib 962, one or more pins may be provided inside the main body 90. Then, the lead wires L1 to L8 may be guided by the pins. That is, the wire passage portions S3 and S4 may be formed by the pins. For example, in FIG. 10, the base 961 of the holding portion 96a is omitted, and a plurality of ribs 962 are used as pins to lead to a connecting portion which is a space between the plurality of pins and the third side wall 93a and the second side wall 92a. Lines L1 to L8 may be passed through. Alternatively, the lead wires L1 to L8 may be passed through a wire passage portion which is a space between a plurality of pins.

(2.4) Summary of Embodiment 2 As described above, in the turnout 2a according to the present embodiment, the first wire passage portion (for example, the wire passage portion S3) is located inside the main body portion 90.

According to the above configuration, the degree of freedom in designing the external shape of the main body 90 can be increased as compared with the case where the first wire (for example, the wire S3) is located outside the main body 90.

Further, in the turnout 2a according to the present embodiment, the main body 90 preferably includes the body 9a and the cover 9b. The cover 9b is coupled to the body 9a. The first line portion (for example, the line portion S3) and the second line portion (for example, the line portion S4) are preferably formed between the body 9a and the cover 9b.

According to the above configuration, with the body 9a and the cover 9b disassembled, the lead wires L1 to the first wire portion (for example, the wire passage portion S3) and the second wire passage portion (for example, the wire passage portion S4) are connected to each other. The middle portion 105 of L6 can be passed through. Therefore, it is easier to pass the intermediate portion 105 of the lead wires L1 to L6 through the first through portion and the second through portion as compared with the case where the main body portion 90 is made of one non-disassembleable member.

Each of the above-described embodiments may be realized by appropriately combining them, including modifications.

1 Intercom system 2, 2a Turnout 30, 90 Main body 9a Body 9b Cover 33e Third wall (wall)
51 Circuit board 81 Dwelling unit terminal 82 Communication device 101 First end (one end)
102 Second end (other end)
105 Intermediate part 107 1st part 108 2nd part 302 Through hole L1, L2 Input lead wire L3, L4 Output lead wire L5, L6 Branch lead wire S1 1st lead wire S2 2nd lead wire

Claims (6)

The box-shaped body and
A pair of input lead wires whose one end is located inside the main body and the other end is located outside the main body.
One end is electrically connected to the pair of input lead wires inside the main body, and the other end is a pair of output lead wires located outside the main body.
One end is electrically connected to the pair of input lead wires inside the main body, and the other end is provided with a pair of branched lead wires located outside the main body.
Each of the pair of input lead wires, the pair of output lead wires, and the pair of branched lead wires has a first portion formed of a part of an intermediate portion between the one end and the other end, and the intermediate portion. Among them, a second part composed of a part different from the first part is included.
A first line portion through which the first portion of the pair of input lead wires, the pair of output lead wires, and the pair of branch lead wires is passed along a first direction.
The pair of input lead wires, the pair of output lead wires, and the second wire portion through which the second portion of the pair of branch lead wires intersects with the first direction. Including,
The body portion includes a body and a cover coupled to the body.
The first wire passage portion and the second wire passage portion are formed between the body and the cover.
Turnout. In each of the pair of input lead wires, the pair of output lead wires, and the pair of branch lead wires, the intermediate portion bends between the first portion and the second portion and outside the main body portion. The turnout according to claim 1. A through hole forming at least a part of the first line portion is formed in the main body portion.
The turnout according to claim 2, further comprising a wall portion that is arranged outside the main body portion at a position facing the opening surface of the through hole and that forms the second line portion between the main body portion and the main body portion. The turnout according to claim 1, wherein the first line portion is located inside the main body portion. A circuit board that is held inside the main body and has wiring formed is further provided.
One end of each of the pair of input lead wires, the pair of output lead wires, and the pair of branch lead wires is connected to the circuit board.
The pair of input lead wires are electrically connected to the pair of output lead wires and the pair of branch lead wires via the wiring of the circuit board.
The turnout according to any one of claims 1 to 4. A plurality of turnouts according to any one of claims 1 to 5 are provided.
A plurality of dwelling unit terminals electrically connected to the plurality of turnouts,
Further provided is a communication device that is electrically connected to the plurality of dwelling unit terminals via the plurality of turnouts and communicates with the plurality of dwelling unit terminals.
Intercom system.

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