GB2143382A

GB2143382A - A plug socket for a flat cable

Info

Publication number: GB2143382A
Application number: GB08411839A
Authority: GB
Inventors: Nobukazu Yamada
Original assignee: TOYOKUNI SASAKI ELECTRIC CABLE
Current assignee: TOYOKUNI SASAKI ELECTRIC CABLE
Priority date: 1983-07-04
Filing date: 1984-05-09
Publication date: 1985-02-06
Also published as: SG41688G; GB2143382B; KR900007576B1; CA1244928A; HK55589A; KR850002923A; GB8411839D0

Abstract

A plug socket 31 for a flat cable (55), Fig. 12 (not shown), comprises a housing comprising a base plate 35 having a hood 36 fixed thereto by screws 40, and plug sockets proper 46 located in a wall of the hood 36. A flat cable 43 is electrically connected inside the housing 35, 36 to the plug sockets proper 46 by wiring 47, 49, 51, and extends out of the housing 35, 36 for connection to a flat cable (55) which is to be fitted with a socket. The need for dismantling the socket 31 on site before connection to a cable (55) is avoided resulting in a significant saving in time and reducing the skill needed. <IMAGE>

Description

SPECIFICATION A plug socket for a flat cable The invention relates to a plug socket for a flat cable which connects by wiring to a flat cable wired on a floor surface, etc. covered with a carpet, etc. inside a building.

A plug socket for a flat cable 1 as shown in Figures 1 to 4 has been used heretofore. The plug socket 1 consists ofthefollowing: a base plate 2 which can be fitted on the floor surface, etc.; slots 3,3 which are made up midway along both sides of the base plate 2, machine screws etc. for fixing the base plate 2 to the floor surface, etc. are inserted therein; a terminal base 5 made of insulating material and fixed by two machine screws 4,4 centrally of the top surface of the base plate 2; three terminals 6, 6,6 provided on the top surface of the terminal base 5; flat cable supporting plates 8,8 fixed respectively by two machine screws 7, 7 on the base plate 2 on both sides of the terminal base 5;; side wall plates 10,10 fitted respectively by two machine screws 9,9 on both side portions of the base plate 2; a rear plate 13 fitted by machine screws 12, 12 to supporting pieces 11, 11 made up respectively at one end of the side wall plates 10,10; a plug socket proper 19 furnished with distributing cords 16, 17, 18 fitted to the terminals 6,6,6 and fitted by two machine screws 15, 15 to supporting pieces 14, 14 made up respectively at the other end of the side wall plates 10, 10;; a front plate 21 fitted by a machine screw 20 to the plug socket proper 19, which covers the space between the sidewall plates 10,10, and a hood 24 fitted by machine screws 23, 23 to supporting pieces 22, 22 made up on the upper ends of the side wall plates 10, 10, which overlies upper ends of the side wall plates 10, 10, the front plate 21 and the rear plate 13.

in case of wiring on the floor surface covered with a carpet, etc. using the plug socket for a flat cable of this type, at first the location for fitting of the plug socket is decided temporarily. At this time, the plug socket is disassembled and the temporary decision for location is made with the base plate.

After that, the flat cable is wired temporarily so that the cable becomes neither creased nor loosened.

The location of the base plate is adjusted so that the flat cable can be fitted to the base plate without either creasing or loosening of the flat cable wired temporarily and then the base plate is fixed to the floor surface by machine screws. Also the regular wiring is made by fixing the flat cable wired temporarily to the floor surface.

Subsequently, an eyelet terminal is fitted to the conductor portion of the flat cable to connect the flat cable with the terminal of the terminal base of the base plate, the eyelet terminal is fitted to the terminal of the terminal base, and also the distributing cord of the plug socket proper is fitted to the terminal.

Thereafter wiring is completed by fitting the side wall plate, the front plate, the rear plate and the hood to the base plate and assembling the plug socket.

When wiring the plug socket for a flat cable which is wired in such a way with the flat cable, heretofore in use, there are disadvantages as listed below.

(1) It is difficult to work because of wiring temporarily and then regularly of the flat cable wired on the floor surface and locating temporarily and regularly the base plate of the plug socket.

(2) It is difficult and also inefficient when fitting the eyelet terminal for connecting the terminal of the plug socket flat cable at the job site.

(3) It is inefficient to disassemblethe plug socket, complete the wiring of the plug socket with the flat cable and then reassemble the plug socket at the job site.

(4) As the plug socket is made up in comparatively large size to make it easy to connect the terminal of the plug socket with the flat cable at a job site, it is apt to become an encumbrance.

(5) As the eyelet terminal fitted to the flat cable connected with the terminal of the plug socket cannot be fitted to the terminal unless the eyelet terminal is fitted in position, it is difficult to fit the eyelet terminal and also it is necessary to become skilfull in it.

A primary object of the invention is to provide a plug socket for a flat cable which permits the work of connecting a flat cable with the plug socket to be made easily and in a short time even by an inexperienced person.

Another object of the invention is to provide a plug socket for a flat cable which can be small sized and compact.

Accordingiy, the present invention provides a plug socket for a flat cable, comprising: a housing which can be fitted inside a building; not less than one plug socket proper fitted to said housing, into which a plug can be inserted; a flat cable for connection of a predetermined length, fitted inside said housing, at least one end of said cable projecting outward of said housing, and wiring which electrically connects said flat cable for connection and said plug socket proper inside said housing.

Other and incidental objects of the invention will become apparent from the following description and claims.

The invention will now be further described by way of example with reference to the accompanying drawings wherein: Figure 1 is a full-sized front view showing an embodiment heretofore in use.

Figure 2 is a left side view of Figure 1.

Figure 3 is a sectional view showing the internal construction of Figure 1.

Figure 4 is a plan view of a base plate illustrated in Figure 1.

Figure 5 is a full-sized front view showing an embodiment of the invention.

Figure 6 is a right side view of Figure 5.

Figures 7 and S are a plan view and a front view respectively of a base plate of an embodiment illustrated in Figure 5.

Figure 9 is a sectional view of a hood of an embodiment illustrated in Figure 5.

Figure 10 is a plan view of Figure 5.

Figure 11 is a sectional view along line A-A of Figure 10.

Figure 12 is an explanatory drawing showing a wiring process using a plug socket for a flat cable of the invention.

Figure 13 is an explanatory drawing showing a different embodiment in the state of connection, and Figures 14 and 15, Figures 16 and 17, Figures 18 and 19, Figures 20 and 21 and Figures 22 and 23 are respectively explanatory drawings showing different embodiments of the invention.

In the embodiments of the invention shown in Figures 5 to 12,31 is a plug socket for a flat cable, which is constructed based on a housing 32 as shown in Figures 5 to 11.

The housing 32 comprises (i) a base plate 35 made up with a metal sheet having legs 34, 34 with slots 33,33 in the ends thereof and (ii) a hood 36 of plastics material which covers the base plate 35.

Fitting portions 38,38 having tapped holes 37,37 are made up in the nearly central portions of both sides of the opening of the hood 36. Holes for inserting machine screws 39,39 are formed in the base plate 35 at positions corresponding to the tapped holes 37, 37 of the fitting portions 38,38. The base plate 35 is fixed in one united body with the hood 36 by screwing machine screws 40, 40 inserted through holes 39,39 into the tapped holes 37,37 of the fitting portions 38, 38.

An end portion of a flat cable 43 which projects a stated length such as 30 to 50 centimeters outwards is fitted by a bolt 41 and a nut 42 in the nearly central portion of the top surface of the base plate 35 (Figure 10).

A bolt inserting hole 45 in which the bolt 41 is inserted is made up in a safety earth terminal 44 of the flat cable 43.

Two 3-pole plug sockets proper 46,46 are fitted to a front plate 36a of the hood 36. Voltage side distributing cord 47,47 of the 3-pole plug sockets proper 46, 46 are connected by soldering, etc, with a voltage side electric conductor 48 of the flat cable 43 in the housing 32.

Earthing side distributing cords 49,49 of the 3-pole plug sockets proper 46, 46 are connected by soldering, etc. with an earthing side electric conductor 50 of the flat cable for connection 43 in the housing 32.

Distributing cords for earthing 51,51 of the 3-pole plug sockets proper 46, 46 are fitted to the bolt 41.

Connecting portions of the flat cable for connection 43 with the voltage side distributing cords 47, 47, the earthing side distributing cords 49, 49, and the distributing cords for earthing 51,51 are covered with insulating tape 52 for insulation.

An earthing terminal 53 is fitted to a rear plate 36b of the hood 36.

54 is a calking agent such as a silicon compound, a vinyl compound, etc. filling the space between the base plate 35 and the hood 36.

It is not necessary to fill up with the calking agent 54 for use at the place where water, etc. does not enter by only covering the connecting portion of the flat cable for connection 43 and various kinds of distributing cords with an insulating tape.

In case of wiring on a floor surface, etc. covered with a carpet, etc. by using the plug socket for a flat cable 31 of the above construction, a flat cable 55 is wired on a floor surface 56 at first as shown in Figure 12 so that the flat cable 55 is positioned near the place where the plug socket for a flat cable 31 is set up.

After that, the end portion of the flat cable 43 projecting from the housing 32 of the plug socket 31 is positioned to cross with the flat cable 55, or the flat cable 55 is arranged on the flat cable 43 and then the plug socket 31 is fixed to the floor surface 56 by screwing machine screws 57, 57 through the slots 33,33 of the base plate 35.

Subsequently the voltage side electric conductors 48,48, the earthing side electric conductors 50, 50, and the safety earth terminals 44,44 of both the flat cable 43 of the plug socket 31 and the flat cable 55 are respectively connected by the connector and terminals 58, 58, 58, and then wiring is completed by sealing with a sealing tape (not illustrated) on the top surface and the under surface of the connecting portions.

Furthermore, as shown in Figure 13, it is also possible to wire by exposing respectively outwards the voltage side electric conductors 48,48, the earthing side electric conductors 50, 50, and the safety earth terminals 44, 44 at the corresponding position of the flat cable 55 and the flat cable 43, fixing and connecting them respectively by soldering, and then covering the said portion with a friction tape, etc.

Now the different embodiments of the plug socket ofthe invention shown in Figures 14to 23 inclusive will be explained. In the explanations of these embodiments, the same component parts as the aforesaid embodiments of the invention have the same reference numeral and the explanation of the same component parts will be omitted.

The embodiment shown in Figures 14 and 15, differs from the above described embodiments in that 2-pole plug sockets proper with doors 46A, 46A are fitted to a front plate 36a of the hood 36. Even with such a composition of the plug socket for a flat cable 31A, it is possible to obtain the same working effect as with the aforesaid embodiment.

The embodiment shown in Figures 16 and 17, differs from the aforesaid embodiments of the invention in that 2-pole plug sockets proper 46B,46B are fitted to the front plate 36a of the hood 36. Even in the case of such a composition of the plug socket for a flat cable 318, it is possible to obtain the same working effect as the aforesaid embodiments.

The embodiment shown in Figures 18 and 19, differs from the aforesaid embodiment of the invention in that 2-pole plug sockets proper with doors 46A, 46A are fitted to a top plate 36c of the hood 36.

Even in case of such a composition of a plug socket for a flat cable 31 C, it is possible to obtain the same working effect as with the aforesaid embodiments.

The embodiment shown in Figures 20 and 21, differs from the aforesaid embodiments of the invention in that the 3-pole plug sockets proper 46, 46 are fitted to the top plate 36c of the hood 36. Even in case of such a composition of the plug socket for a flat cable 31 D, it is possible to obtain the same working effect as with the aforesaid embodiments.

The embodiment shown in Figures 22 and 23, differ from the aforesaid embodiments of the invention in that the 2-pole plug socket proper 468,468 are fitted to the top plate 36c of the hood 36. Even in case of such a composition of a plug socket for a flat cable 31 E, it is possible to obtain the same working effect as the aforesaid embodiments.

Having described the invention as related to embodiments where the connection between each electric conductor of the flat cable for connection and various kinds of distributing cords inside the housing 32 is made by soldering, it is our intention that the invention be not limited to the above method but also possible by using other methods such as the prior art method.

The flat cable for connection 43 which has not less than three lines of electric conductor within also can be used.

Further having described the invention as related to the embodiment in case of the plug socket proper being fitted to a side wall or a top wall of the housing, it is our intention that the plug socket proper fitted to one or both side walls or a top wall and a side wall thereof also can be used.

A flat cable for connection which projects from both sides of the housing can be used.

A housing comprising a base plate and a hood which can be fixed to each other not by using a bolt but by other fittings can be used.

Further, a housing made up in one united body with the plug socket proper also can be used.

As will be apparent from the aforesaid explana tion, the invention has the effects as listed below.

(1) By making the flat cable for connection project from the housing, for example by as far as the stated length, it is possible to wire by only (i) wiring the flat cable on the floor surface, (ii) thereafter, crossing the flat cable for connection of the plug socket and the above flat cable, (iii) fixing, under the above condition, the plug socket on the floor surface, and (iv) connecting the crossing portions of the above flat cables to each other.

Accordingly, it is possible to conduct wiring operation very easily compared with the former method.

(2) Owing to the above item (1), it is possible to conduct wiring operations effectively even by an unskilled person.

(3) As it is not necessary to disassemble and reassemble the plug socket for a flat cable at a job site, it is possible to prevent accidents of missing parts thereof.

(4) As the flat cable for connection projects from the housing, it is not necessary to disassemble and reassemble the plug socket at the job site, and therefore it is possible to make it small and compact.

Claims

1. A plug socket for a flat cable, comprising: a housing which can be fitted inside a building; not less than one plug socket proper fitted to said housing, into which a plug can be inserted; a flat cable for connection of a predetermined length, fitted inside said housing, at least one end of said cable projecting outward of said housing, and wiring which electrically connects said flat cable for connection and said plug socket proper inside said housing.

2. A plug socket for a flat cable according to claim 1, wherein said housing comprises: a base plate which can be fitted inside a said building by not less than two screws or the like, and a hood which can be fitted by not less than one screw or the like, to said base plate.

3. A plug socket for a flat cable according to claim 1 or 2, wherein a calking agent such as a silicon compound fills said housing.

4. A plug socket for a flat cable according to claim 1,2 or 3, wherein said plug socket proper is a 2-pole plug socket.

5. A plug socket for a flat cable according to claim 1,2 or 3, wherein said plug socket proper is a 3-pole plug socket.

6. A plug socket for a flat cable according to any one of claims 1 to 5, wherein said plug socket proper is fitted to a side wall of said housing.

7. A plug socket for a flat cable according to any one of claims 1 to 5, wherein said plug socket proper is fitted to a top wall of said housing.

8. A plug socket for a flat cable according to any one of claims 1 to 7, wherein one end of a flat cable is fitted to said housing by bolting, etc. with the aid of a safety earth terminal of said flat cable inside said housing.

9. A plug socket for a flat cable according to any one of claims 1 to 8, wherein a distributing cord fitted to said plug socket proper is connected by soldering with a voltage side electric conductor and an earthing side electric conductor of said flat cable inside said housing.

10. A plug socket for a flat cable according to any one of claims 1 to 8, wherein a distributing cord fitted to said plug socket proper is connected by using a connection terminal with said voltage side electric conductor and said earthing side electric conductor of said flat cable inside said housing.

11. A plug socket for a flat cable, substantially as hereinbefore described with reference to Figures 5 to 13, 14 and 15,16 and 17,18 and 19,20and21,or22 and 23 of the accompanying drawings.