GB2083715A - An electrical connector - Google Patents
An electrical connector Download PDFInfo
- Publication number
- GB2083715A GB2083715A GB8029064A GB8029064A GB2083715A GB 2083715 A GB2083715 A GB 2083715A GB 8029064 A GB8029064 A GB 8029064A GB 8029064 A GB8029064 A GB 8029064A GB 2083715 A GB2083715 A GB 2083715A
- Authority
- GB
- United Kingdom
- Prior art keywords
- housing
- cable
- cover
- projection
- plug
- 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.)
- Withdrawn
Links
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
- H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
- H01R13/582—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable the cable being clamped between assembled parts of the housing
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
An electrical plug comprises a housing (2) together with a cover. The cover and housing each have internal projections (6) located to clamp a cable therebetween when the cover is closed on to the housing. The projection (6) in the housing has a bevelled surface (12) to resist removal of the cable and spaced guide posts (10). <IMAGE>
Description
SPECIFICATION
An electrical connector
The present invention relates to an electrical connector such as a three pin plug for connecting an
electrical conductor carrying cable to for example a wall socket.
Electrical plugs are often provided with means for
gripping a conductor carrying cable so that any force
applied to the cable by for example a person heading on the cable can be taken by the cable rather than the conductors which are substantially thinner than the cable and which could become detached from the electrical connecting elements for connecting the conductors to the pins of the plug.
Means for gripping the cable is often in the form of
a bridging member located within the plug. A pair of
screws extend into the plug and are connected to the
bridging member which grips the cable as the
screws are tightened and so impedes withdrawal of the cable from the plug and consequent disconnection of the conductors from their pins.
Although this manner of gripping a cable can be satisfactory the use of screws and a bridging mem
ber could addto the cost of manufacturing the plug.
Also extra time has to be spent in connecting the cable to the plug. To avoid these disadvantages there is provided according to the present invention
an electrical connector comprising a housing provided with electrical connecting elements and a cover for closing the housing, which connector is
provided with an opening to give access into the connector for a cable and which cover and housing each comprise internal projection means located to clamp a cable therebetween when the cover is closed onto the housing.
Such a connector has the advantages that it enables a cable to be gripped by the projection
means simply by closing the housing with the cover.
No screws or bridging members are required and therefore the connector and the cable can be assem
bled more quickly. This is particularly advantageous for manufacturers who wish to provide a plug with their appliance.
The height of the projection means are determined
by the width of the cable that is to be used and this
has the advantage, when the connector is used with
mass produced wiring, that the projection means do
not have to be individually set in each connector.
At least the projection means of the housing may comprise a bevelled surface which has an edge
located to bear against the cable and which is so 'inclined as to impede removal of the cable from the connector when the cover is closed onto the housing. No specific type of projection means is essen -tial; any suitable form of barb or saw tooth configuration for example could be used. This has the advantage of providing a positive grip.
The housing may comprise two spaced posts located adjacent its projection means, which posts each act as guide members for a respective conductor of the cable. This helps the cable to be correctly positioned before the housing is closed onto the
The electrical connector may be for example a two or three pin plug.
The cover may be secured to the housing means such as ultrasonic welding, a screw, interlocking snap action means, or adhesive bonding by for example impact glue.
An embodiment of the present invention will now be described by way of example and with reference to the accompanying drawing in which:
Figure 1 shows a plan view of parts of the inside of the housing of an electrical plug embodying the present invention,
Figure 2 shows a view taken along line A - A of
Figure 1,
Figure 3 shows a plan view of part of the inside of the cover,
Figure 4 shows a view taken along line B - B of
Figure 3,
Figure 5 shows a view similar to that shown in
Figure 1 and illustrates the manner in which the cable and conductors are located in the housing, and
Figure 6 shows the projection means gripping the cable when the cover is secured to the housing.
Figure 1 shows a plan view of parts of the inside of a housing 2 of a plastics or rubberthree pin electrical plug such as a 13 Amp plug in which reference numeral 4 indicates the side wall of the housing. A projection 6 in the approximatform of a flattened tubular section is integrally moulded with the base 8 of the housing 2.
Adjacent the projection 6 are two posts 10 which are integrally moulded with the projection 6 and the base 8 of the housing 2. As can be seen from Figure 2, which is a view taken along line A - A of Figure 1, the projection 6 comprises two bevelled surfaces 12 which define edges 13 and which are each inclined towards the base 8 of the housing and a recess 14 defines part of an opening for a conductor carrying cable. Also, as can be seen from Figure 2, the posts 10 extend beyond the projection 6 in a direction away from the base 8 of the housing 2.
Extending from the base 8 of the housing are guide elements 16 and 18 for guiding conductors to their pins (not shown) which extend through the base 8 of the housing for connecting the plug to an appropriate electrical socket such as a wall socket.
Figure 3 shows a plan view of the inside of a cover 20 for the housing 2. The cover 20 comprises a projection 22 which is approximately in the form of a flattened tubular section and which is integrally moulded with the base 24 of the cover 20. As can be seen from Figure 4, which is a view taken along line
B - B of Figure 3, the projection 22 comprises flat surfaces 26 which are parallel to the base 24 of the cover 20. The cover 20 is also provided with a recess 28 which co-operates with the recess 14 to define the opening for the cable.
Instead of having the bevelled projection 6 extending from the base 8 of the housing and the flat projection 22 extending from the base 24 of the cover the bevelled projection 6 could extend from the cover and the flat projection from the housing.
Alternatively both projections 6 and 22 could be flat or bevelled or of any other suitable configuration.
Figure 5 shows a view similar to that shown in
Figure 1 and illustrates the manner in which the cable 30 and conductors 32,34 and 36 are located in the housing 2. The cable 30 rests on the edge 13 of each bevelled surfaces 12 of the projection 6 and the conductors are guided around the guide members 16 and 18 to their pins. Conductor 32 which is "live" and conductor34which is "neutral" are also guided around the posts 10 thereby enabling the cable 30 to be correctly positioned prior to securing the cover 20 to the housing 2.
When the cover 20 is secured to the housing 2 the projection 6 on the housing 2 and the projection 22 in the cover 20 squeeze and clamp the cable 30 between each other as is shown in Figure 6. The bevelled surfaces 12, by virtue oftheirdirection of inclination, impede withdrawal of the cable 30 from the plug and thereby help to provide a secure connection between the cable 30 and the plug.
The cover 20 may be secured to the housing by means such as ultrasonic welding, a screw, interlocking snap action means or adhesive bonding using for example an impact glue.
If the cover 20 is assembled to the housing by ultrasonic welding, thereby rendering the inside of the plug inaccessible, a fuse such as a 13 Amp Fuse may be inserted in a recess (not shown) in the outer surface of the base 8 of the housing 2.
The present invention is equally applicable to a two-pin plug. The cable may be a two core cable.
CLAIMS (Filed on 9Sept. 1981)
1. An electrical connector comprising a housing provided with electrical connecting elements and a cover for closing the housing, which connector is provided with an opening to give access into the connector for a cable and which cover and housing each comprise internal projection means located to clamp a cable therebetween when the cover is closed onto the housing.
2. An electrical connector according to Claim 1, wherein the projection means are integrally moulded with the cover and the housing respectively.
3. A connector according to Claim 1 or Claim 2, wherein at least the projection means of the housing comprises a bevelled surface which has an edge
located to bear against the cable and which is so inclined as to impede removal of the cable from the connector when the cover is closed onto the
housing.
4. A connector according to any one of the
preceding claims, wherein the housing comprises two mutually spaced posts located adjacent its
projection means, which posts each act as a guide
member.
5. An electrical connector according to any one
of the preceding claims being a three pin plug.
6. An electrical connector substantially as
hereinbefore described with reference to the accom
panying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (6)
1. An electrical connector comprising a housing provided with electrical connecting elements and a cover for closing the housing, which connector is provided with an opening to give access into the connector for a cable and which cover and housing each comprise internal projection means located to clamp a cable therebetween when the cover is closed onto the housing.
2. An electrical connector according to Claim 1, wherein the projection means are integrally moulded with the cover and the housing respectively.
3. A connector according to Claim 1 or Claim 2, wherein at least the projection means of the housing comprises a bevelled surface which has an edge
located to bear against the cable and which is so inclined as to impede removal of the cable from the connector when the cover is closed onto the
housing.
4. A connector according to any one of the
preceding claims, wherein the housing comprises two mutually spaced posts located adjacent its
projection means, which posts each act as a guide
member.
5. An electrical connector according to any one
of the preceding claims being a three pin plug.
6. An electrical connector substantially as
hereinbefore described with reference to the accom
panying drawings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8029064A GB2083715A (en) | 1980-09-09 | 1980-09-09 | An electrical connector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8029064A GB2083715A (en) | 1980-09-09 | 1980-09-09 | An electrical connector |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2083715A true GB2083715A (en) | 1982-03-24 |
Family
ID=10515950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8029064A Withdrawn GB2083715A (en) | 1980-09-09 | 1980-09-09 | An electrical connector |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2083715A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7034746B1 (en) * | 2005-03-24 | 2006-04-25 | Bettelle Memorial Institute | Holographic arrays for threat detection and human feature removal |
US7253766B2 (en) | 2004-09-24 | 2007-08-07 | Battelle Memorial Institute | Three-dimensional surface/contour processing based on electromagnetic radiation interrogation |
US7365672B2 (en) | 2001-03-16 | 2008-04-29 | Battelle Memorial Institute | Detection of a concealed object |
US7405692B2 (en) | 2001-03-16 | 2008-07-29 | Battelle Memorial Institute | Detecting concealed objects at a checkpoint |
US7844081B2 (en) | 2006-05-15 | 2010-11-30 | Battelle Memorial Institute | Imaging systems and methods for obtaining and using biometric information |
-
1980
- 1980-09-09 GB GB8029064A patent/GB2083715A/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7365672B2 (en) | 2001-03-16 | 2008-04-29 | Battelle Memorial Institute | Detection of a concealed object |
US7405692B2 (en) | 2001-03-16 | 2008-07-29 | Battelle Memorial Institute | Detecting concealed objects at a checkpoint |
US7834802B2 (en) | 2001-03-16 | 2010-11-16 | Battelle Memorial Institute | Detection of a concealed object |
US7253766B2 (en) | 2004-09-24 | 2007-08-07 | Battelle Memorial Institute | Three-dimensional surface/contour processing based on electromagnetic radiation interrogation |
US7034746B1 (en) * | 2005-03-24 | 2006-04-25 | Bettelle Memorial Institute | Holographic arrays for threat detection and human feature removal |
US7844081B2 (en) | 2006-05-15 | 2010-11-30 | Battelle Memorial Institute | Imaging systems and methods for obtaining and using biometric information |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |