GB2196192A - A fused electrical plug unit - Google Patents
A fused electrical plug unit Download PDFInfo
- Publication number
- GB2196192A GB2196192A GB08723998A GB8723998A GB2196192A GB 2196192 A GB2196192 A GB 2196192A GB 08723998 A GB08723998 A GB 08723998A GB 8723998 A GB8723998 A GB 8723998A GB 2196192 A GB2196192 A GB 2196192A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fuse
- housing
- plastics
- plug unit
- holder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920003023 plastic Polymers 0.000 claims abstract description 25
- 239000004033 plastic Substances 0.000 claims abstract description 25
- 239000002775 capsule Substances 0.000 claims description 10
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/68—Structural association with built-in electrical component with built-in fuse
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Fuses (AREA)
Abstract
A plastics fuse-holder (9) which is located in the free space in the housing of an electrical plug unit accommodates a replaceable cartridge fuse (10), has a terminal (11) for an associated flexible lead (7) and a connecting pin (12) the pin extending from the holder and being secured in a bore in a contact pin or socket (5) of the unit. <IMAGE>
Description
SPECIFICATION
An electrical plug unit
This invention relates to an electrical plug unit having a housing consisting of a base and a head, insulating inserts, a cable entry on the housing head, a plurality of contact elements embedded in the housing base in the form of contact pins or contact sockets, a corresponding number of wiring paths for flexible leads extending from a cable end and running through free spaces within the housing, and terminals for the leads on the contact elements, in which at least one of the wiring paths includes a plastics fuse-holder with leads to a recess accommodating a replaceable cartridge fuse. Such plug units are in general standardised according to particular function.
In a known unit of this type, the plastics fuse-holder is formed as a capsule inserted in a hole bored in the housing base. The capsule has a cover or an inserted closure, and these components can be unscrewed from the housing base. In this way, the cartridge fuse in the recess in the fuse-hoider can be removed and replaced. The capsule has a pair of wire terminals and associated contactors. One wiring path extends from of the lead terminals to the fuse, while a flexible lead extends from the other lead terminal to the associated contact element, which is connected to the plastics fuse-holder and the cartridge fuse by electrical means alone, with no mechanical connection.
This is costly and necessitates a special housing, or at least a special housing base bored out to accommodate the plastics fuse capsule.
The object of the invention is to provide an improved plug unit of the type initially described, so that there is no longer any need for.a special housing and/or a special housing base bored out to accommodate the plastics fuse capsule.
According to the present invention, one end of the plastics capsule has a terminal for the associated flexible lead, and a connecting pin extends from the other end, which connecting pin is inserted into and secured in the terminal of the associated contact element, and the plastics fuse holder is accommodated in the free space in the housing. The invention utilises the fact that there is usually sufficient free space in the housing of electrical plug units of the type defined for the accommodation of at least one single-phase fuse in a plastics fuse-holder with the connecting pin extending from the plastics fuse-holder inserted and secured in the terminal of one contact element. Thus, the contact element acts as the support for the cartridge plug in its plastics holder.The contact element can be specifically adapted for this purpose; however, a preferred embodiment of outstandingly simple construction from the manufacturing viewpoint does not utilise a special contact element, but instead has a conventional terminal on the contact element in question with an axial hole and at leat one clamping screw and the connecting pin is inserted into the axial hole and secured by the clamping screw.
In the context of the invention, the shape and construction of the plastics fuse-holder is fundamentally unrestricted. One embodiment of outstanding manufacturing simplicity, whereby it can be formed as a plastics injection moulding, has the plastics capsule formed as an elongated box-like component having the connecting pin extending beyond one endface and the terminal extending along one sideface, the fuse being inserted into the boxlike component. However, the plastics fuseholder can alternatively be made in two or more pieces, viz., as a sectional capsule, assembled with the aid of screws and having both a connecting pin embedded in a bottom portion and an associated terminal extending along a side portion.It is within the scope of the invention to adapt the plastics capsule so that, together with the fuse, it is both carried and secured by the terminal of the associated contact element and also clamped within the housing.
An embodiment of the invention will now be described, purely by way of example, with reference to the accompanying drawings, in which:
Figure 1 is a longitudinal section taken through an electrical plug unit in accordance with the invention; and
Figure 2 shows the area A of Fig. 1 on an enlarged scale and partly in section.
The electrical plug unit shown in the drawings has a sectional housing consisting of head and base parts 1, 2, insulating inserts 3, a cable entry 4 on the housing head 1, and a plurality of contact elements 5 embedded in the housing base 2. The plug unit can have from two to seven contact elements depending on its particular function. The contact elements 5 are either contact pins, as in Fig. 1 or contact sockets. It is obvious that a corresponding number of wiring paths are provided for flexible leads 7 extending from a cable end and running through free space 6 in the housing, together with terminals for the contact elements 5 which each have an axial hole 8 for a wire lead. One of the wiring paths has a replaceable cartridge fuse 10 accommodated in a plastics holder 9, which has a terminal 11 extending from one end, for the associated flexible lead 7, and a connecting pin 12 projecting beyond the other end which is inserted into the terminal 8 of the associated contact element 5 and secured by clamping screws 13. The plastics fuse-holder 9 is accommodated in the free space 6 in the housing. It could be further secured in the housing by clamping with additional components not shown.
Fig. 2 shows that the plastics fuse-holder 9 is an elongated box-like component having the connecting pin 12 extending beyond the endface 14 and the terminal 11 extending along one sideface 15, the fuse 10 being inserted into the box-like component 9.
Claims (6)
1. An electrical plug unit having a housing consisting of a base and a head, insulating inserts, a cable entry on the housing head, a plurality of contact elements within the housing base in the form of contact pins or contact sockets, a corresponding number of wiring paths for flexible leads extending from a cable end and running through free space within the housing, and terminals for the leads on the contact elements, in which at least one of the wiring paths includes a plastics fuseholder with leads to a recess accommodating a replaceable cartridge fuse, and in which one end of the plastics fuse-holder has a terminal for the associated flexible lead, and a connecting pin extends from the other end, which connecting pin is inserted into and secured in the terminal of the associated contact element, and the plastics fuse-holder is accommodated in the free space in the housing.
2. A plug unit as in Claim 1, wherein the said associated contact element has a terminal with an axial hole and at least one clamping screw, and the connecting pin is inserted into the axial hole and secured by the clamping screw.
3. A plug unit as in Claim 1 or Claim 2, wherein the plastics fuse-holder is formed as an elongated box-like component having the connecting pin extending beyond one endface and the terminal extending along one sideface, the fuse being inserted into the box-like component.
4. A plug unit as in Claim 1 or Claim 2, wherein the plastics fuse-holder is made in two or more pieces assembled with the aid of screws and having a connecting pin embedded in a bottom portion and an associated terminal extending along a side portion.
5. A plug unit as in and one of Claims 1 to 4, wherein the plastics capsule is clamped with the housing.
6. An electrical plug unit substantially as hereinbefore described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19863635541 DE3635541C1 (en) | 1986-10-18 | 1986-10-18 | Electrical connector |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8723998D0 GB8723998D0 (en) | 1987-11-18 |
| GB2196192A true GB2196192A (en) | 1988-04-20 |
| GB2196192B GB2196192B (en) | 1990-08-22 |
Family
ID=6312011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8723998A Expired - Lifetime GB2196192B (en) | 1986-10-18 | 1987-10-13 | An electrical connector unit |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3635541C1 (en) |
| GB (1) | GB2196192B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0666617A1 (en) * | 1994-02-02 | 1995-08-09 | Schurter AG | Appliance plug receptacle with fuse |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB784847A (en) * | 1956-02-07 | 1957-10-16 | Loblite Ltd | Improvements in or relating to fused electrical plugs, sockets and adaptors |
| GB885170A (en) * | 1959-04-07 | 1961-12-20 | Enfield Cables Ltd | Improvements in fused electrical connector plugs |
| GB2135532A (en) * | 1983-02-18 | 1984-08-30 | Mc Graw Edison Co | Polarized fuseholder assembly |
-
1986
- 1986-10-18 DE DE19863635541 patent/DE3635541C1/en not_active Expired
-
1987
- 1987-10-13 GB GB8723998A patent/GB2196192B/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB784847A (en) * | 1956-02-07 | 1957-10-16 | Loblite Ltd | Improvements in or relating to fused electrical plugs, sockets and adaptors |
| GB885170A (en) * | 1959-04-07 | 1961-12-20 | Enfield Cables Ltd | Improvements in fused electrical connector plugs |
| GB2135532A (en) * | 1983-02-18 | 1984-08-30 | Mc Graw Edison Co | Polarized fuseholder assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0666617A1 (en) * | 1994-02-02 | 1995-08-09 | Schurter AG | Appliance plug receptacle with fuse |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2196192B (en) | 1990-08-22 |
| GB8723998D0 (en) | 1987-11-18 |
| DE3635541C1 (en) | 1987-08-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |