CA1089047A - Electrical plug - Google Patents
Electrical plugInfo
- Publication number
- CA1089047A CA1089047A CA309,052A CA309052A CA1089047A CA 1089047 A CA1089047 A CA 1089047A CA 309052 A CA309052 A CA 309052A CA 1089047 A CA1089047 A CA 1089047A
- Authority
- CA
- Canada
- Prior art keywords
- tine
- body member
- retaining
- retaining member
- wall
- 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.)
- Expired
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
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
- H01R13/512—Bases; Cases composed of different pieces assembled by screw or screws
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2103/00—Two poles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Abstract
ABSTRACT
An electrical plug comprising a flexible, hollow body member having an opening therein, retaining means provided in a wall of the body member at a location adjacent the opening of the body member and a hole which is provided in the inner surface of a wall of the body member at a location remote from the retaining member; a tine-retaining member for reception in the opening of the body member, the tine-retaining member having a projection extending outwardly therefrom, which projection engages the retaining means, a hole through which a screw extends into the hole in the body member thereby fixedly holding the tine-retaining member within the opening of the body member, at least two slots provided through the member;
and a tine provided through each of the slots. The plug is resistant to impact, chemical and environmental corrosion, simple in construction and easy to assemble.
An electrical plug comprising a flexible, hollow body member having an opening therein, retaining means provided in a wall of the body member at a location adjacent the opening of the body member and a hole which is provided in the inner surface of a wall of the body member at a location remote from the retaining member; a tine-retaining member for reception in the opening of the body member, the tine-retaining member having a projection extending outwardly therefrom, which projection engages the retaining means, a hole through which a screw extends into the hole in the body member thereby fixedly holding the tine-retaining member within the opening of the body member, at least two slots provided through the member;
and a tine provided through each of the slots. The plug is resistant to impact, chemical and environmental corrosion, simple in construction and easy to assemble.
Description
~LO~ '7 The present invention relates to an electrical plug which is resistent to impact, chemical and environmental corrosion, simple in construction and easy to assemble.
There are two types of conventional plugs. The first type of plugs has at least two tines which are molded in the plug body. The wires of a cord are connected to those tines and held in place by the molded plug body. The plug body may be made of a flexible plastic material, which is durable against impact shocks. However this type of plug cannot be repaired when the wires are disconnected inside the body of the plug.
The other type of plugs generally consists of two members. The first member retains tines thereon, which member is, in turn, housed wi~hin a cavity of a second member. The first member is held in place by screws and this type of plugs is superior to ~he first type of plugs in that the former can be repaired when the installation of the wire becomes insufficient. The first and second members are usually made of a non-flexible, rigid plastic material which is not durable against impact shocks. Accordingly this type of plugs is susceptible of break-age.
In one aspect of the invention there is provided an electrical plug comprising:
an electrically insulative, flexible, hollow body member having an opening therein and an aperture which is provided through a wall of the body member in communication with the interior of the body member and which is adapted to allow an electrical cord to extend therethrough, retaining means provided in a wall of the body member at a location adjacent the said opening of the body member and a hole which is provided an inner surface of a wall of the body member at a location remote from the said retaining means;
an electrically insulative, tine-retaining member for reception in the said opening o the body member, said tine-retaining member having a projection extending outwardly there-~- from, which projection engages the said xetaining means, a hole~
~89()~7 in said tine-retaining member through which a screw extends into the said hole in the body member thereby fixedly holding the said tine-retaining member within the opening of the said body member, a xecessed portion around said hole in said tine-retaining membex so as to locate the head of said screw inside the surface o said tine-retaining member, at least two slots provided through the tine-retaining member;
a tine provided through each of said slots, each ~1 said tines having an inner terminal end and an outer end for reception in a receptable and having at least one detent which engages an inner surface of said slot and which holds the tine fixedly in place through the respective slot~ said terminal end .
being bent and being provided with wire-fastening means which :
is adapted ~o hold a wire of said cord in electrical contact : ~ :
therewith;
`'.~ ' ' ' at least one upstanding tab,said tab being integral with said tine-reta1ning member in a region between two of said .
slots and adjacent the inner terminal ends of the tines in said two slots, said tab being adapted to prevent contact between ; :
the wires held by the wire-fastening means of said tines; and said tine-retaining member being further provided with a xecess adjacent the inner terminal end of each slot to provide room for the wire-iastening means associated therewith.
~ .' '-.
` ::
' ~ J - la - `
The invention is defined by way of example in the :
accompanying drawings wherein;
Fig. 1 is a perspective view of the plug according to one embodiment of this invention; :
-: . .
Fig. 2 is an inverted plan view of the plug; and . . .-, . .
Fig. 3 is an exploded perspective view of the plug. :-Referring to Figures 1 through 3 a hollow body member .. . . . .
1 of a rectangular pyramid prism is equipped with an aper~ure ..
. :
3 through the top wall which is opposite to the opening of the :
body mem er 1 as well as a slot 2 through a sidewall of the .:
body member 1 adjacent to the opening of the body member 1. The : :
hollow body is made of a flexible plastic3 material. `
A tine-retaining member 4 which has :
dimensions corresponding to the opening of the recessed body member 1 is provided witX a tab 5 extending outwardly and longitudinally from one end of the tine-retaining member 4. A
:, ; 3~ ~: hole:6 is provided~at:a~location:adjacent the opposite end of :
: the end wall remote tine~retaining member 4 to the tab 5.
:: The tine-retaining:member 4 is provided with a pair - .
~ 2 -of spaced and parallel slots 7 and a tab 8 which extends upwardly from therebetween. This is integral with the body of the tine-retaining member and serves to prevent contact between the wires fastened to the terminal ends of the tines. It is to be under stood that if there are more than two tines in the plug there may be similar upstanding tabs between the adjacent tines. Each slot 7 receives therethrough a tine 11 which has a spike 12. It is possible to employ more than one spike. The tine 11 can be forced in the slot 7 and held in place by the spike 12. In place of the spikes 12, any type of detents known in the art may be used. The tine is bent adjacent the upper end thereof, thereby forming a terminal 13. A threaded hole 14 is formed through the terminal 13, which is engaged with a screw 15. The tine-retaining member is further provided with a recess 16 at a location ad~acent each slot 7 to provide enough room for its respective screw 15 when the screw 15 is tightened to fasten a wire of a cord between the screw head and the terminal 13.
The tine-retaining member 4 With the tines 11 and screws 15 is installed within the spacing of the hollow body member 1 with the tab 5 inserted into the slot 2 and a self-tapping screw 17 engaging a hole provided in an inner surface of aside wall ofthe body member 1, which side wall is opposite to the side wall through which the slot 2 is disposed, the screw 17 having been inserted through the hole 6 of the tine-retaining member 4. The aperture 3 may be formed through an end or side wall of the hollow body member 1, for example at a location above the slot 2. The hollow body member may be ;
formed in any convenient shape. The slot 2 of tke hollow body member 1 may be in the form of a recess formed in the inner surface of the bDdy at the loaction corresponding ~o the slot 2.
,.~-~ . .
Needless to say, in lieu of threaded holes 14 the screws ~-15 and any conventional wire-fastening means may be employed, for example, including clamping, soldering etc.
The plug can be used for either a single socket or duplex receptable. The plug according to the present invention is 90~'7 convenient for attachment of a cord thereto. In a conventional plug, tines are mounted on a tine-retaining member by screws which are also used to retain wires on the tines. For in-stallation, the screws must be loosened first, which results in the separation of the tines from the tine~retaining member.
However with the plug of the present invention, the tines are held in place by spikes even when the screws are loosened.
Another advantage of the plug according to the present invention stems from the construction of the tine-retaining member. Opposed to conventional plugs which employ two screws for attaching a tine-retaining member to a hollow body, the tine retaining member of the present invention has a tab and a screw. The tab is simply inserted into the slot of the recessed body and then the whole assembly is tightened by the screw. Therefore, it ;~
is much simpler and faster to connect wires with a plug of the present invention than with a conventional plug. Because of the flexible nature of the recessed body, the plug of this invention is resistant against impact shocks. -~
Other embodiments falling with the terms of the appended claims, will occur to those skilled in the art.
-, ",.
,': ~' '' ..: ' '
There are two types of conventional plugs. The first type of plugs has at least two tines which are molded in the plug body. The wires of a cord are connected to those tines and held in place by the molded plug body. The plug body may be made of a flexible plastic material, which is durable against impact shocks. However this type of plug cannot be repaired when the wires are disconnected inside the body of the plug.
The other type of plugs generally consists of two members. The first member retains tines thereon, which member is, in turn, housed wi~hin a cavity of a second member. The first member is held in place by screws and this type of plugs is superior to ~he first type of plugs in that the former can be repaired when the installation of the wire becomes insufficient. The first and second members are usually made of a non-flexible, rigid plastic material which is not durable against impact shocks. Accordingly this type of plugs is susceptible of break-age.
In one aspect of the invention there is provided an electrical plug comprising:
an electrically insulative, flexible, hollow body member having an opening therein and an aperture which is provided through a wall of the body member in communication with the interior of the body member and which is adapted to allow an electrical cord to extend therethrough, retaining means provided in a wall of the body member at a location adjacent the said opening of the body member and a hole which is provided an inner surface of a wall of the body member at a location remote from the said retaining means;
an electrically insulative, tine-retaining member for reception in the said opening o the body member, said tine-retaining member having a projection extending outwardly there-~- from, which projection engages the said xetaining means, a hole~
~89()~7 in said tine-retaining member through which a screw extends into the said hole in the body member thereby fixedly holding the said tine-retaining member within the opening of the said body member, a xecessed portion around said hole in said tine-retaining membex so as to locate the head of said screw inside the surface o said tine-retaining member, at least two slots provided through the tine-retaining member;
a tine provided through each of said slots, each ~1 said tines having an inner terminal end and an outer end for reception in a receptable and having at least one detent which engages an inner surface of said slot and which holds the tine fixedly in place through the respective slot~ said terminal end .
being bent and being provided with wire-fastening means which :
is adapted ~o hold a wire of said cord in electrical contact : ~ :
therewith;
`'.~ ' ' ' at least one upstanding tab,said tab being integral with said tine-reta1ning member in a region between two of said .
slots and adjacent the inner terminal ends of the tines in said two slots, said tab being adapted to prevent contact between ; :
the wires held by the wire-fastening means of said tines; and said tine-retaining member being further provided with a xecess adjacent the inner terminal end of each slot to provide room for the wire-iastening means associated therewith.
~ .' '-.
` ::
' ~ J - la - `
The invention is defined by way of example in the :
accompanying drawings wherein;
Fig. 1 is a perspective view of the plug according to one embodiment of this invention; :
-: . .
Fig. 2 is an inverted plan view of the plug; and . . .-, . .
Fig. 3 is an exploded perspective view of the plug. :-Referring to Figures 1 through 3 a hollow body member .. . . . .
1 of a rectangular pyramid prism is equipped with an aper~ure ..
. :
3 through the top wall which is opposite to the opening of the :
body mem er 1 as well as a slot 2 through a sidewall of the .:
body member 1 adjacent to the opening of the body member 1. The : :
hollow body is made of a flexible plastic3 material. `
A tine-retaining member 4 which has :
dimensions corresponding to the opening of the recessed body member 1 is provided witX a tab 5 extending outwardly and longitudinally from one end of the tine-retaining member 4. A
:, ; 3~ ~: hole:6 is provided~at:a~location:adjacent the opposite end of :
: the end wall remote tine~retaining member 4 to the tab 5.
:: The tine-retaining:member 4 is provided with a pair - .
~ 2 -of spaced and parallel slots 7 and a tab 8 which extends upwardly from therebetween. This is integral with the body of the tine-retaining member and serves to prevent contact between the wires fastened to the terminal ends of the tines. It is to be under stood that if there are more than two tines in the plug there may be similar upstanding tabs between the adjacent tines. Each slot 7 receives therethrough a tine 11 which has a spike 12. It is possible to employ more than one spike. The tine 11 can be forced in the slot 7 and held in place by the spike 12. In place of the spikes 12, any type of detents known in the art may be used. The tine is bent adjacent the upper end thereof, thereby forming a terminal 13. A threaded hole 14 is formed through the terminal 13, which is engaged with a screw 15. The tine-retaining member is further provided with a recess 16 at a location ad~acent each slot 7 to provide enough room for its respective screw 15 when the screw 15 is tightened to fasten a wire of a cord between the screw head and the terminal 13.
The tine-retaining member 4 With the tines 11 and screws 15 is installed within the spacing of the hollow body member 1 with the tab 5 inserted into the slot 2 and a self-tapping screw 17 engaging a hole provided in an inner surface of aside wall ofthe body member 1, which side wall is opposite to the side wall through which the slot 2 is disposed, the screw 17 having been inserted through the hole 6 of the tine-retaining member 4. The aperture 3 may be formed through an end or side wall of the hollow body member 1, for example at a location above the slot 2. The hollow body member may be ;
formed in any convenient shape. The slot 2 of tke hollow body member 1 may be in the form of a recess formed in the inner surface of the bDdy at the loaction corresponding ~o the slot 2.
,.~-~ . .
Needless to say, in lieu of threaded holes 14 the screws ~-15 and any conventional wire-fastening means may be employed, for example, including clamping, soldering etc.
The plug can be used for either a single socket or duplex receptable. The plug according to the present invention is 90~'7 convenient for attachment of a cord thereto. In a conventional plug, tines are mounted on a tine-retaining member by screws which are also used to retain wires on the tines. For in-stallation, the screws must be loosened first, which results in the separation of the tines from the tine~retaining member.
However with the plug of the present invention, the tines are held in place by spikes even when the screws are loosened.
Another advantage of the plug according to the present invention stems from the construction of the tine-retaining member. Opposed to conventional plugs which employ two screws for attaching a tine-retaining member to a hollow body, the tine retaining member of the present invention has a tab and a screw. The tab is simply inserted into the slot of the recessed body and then the whole assembly is tightened by the screw. Therefore, it ;~
is much simpler and faster to connect wires with a plug of the present invention than with a conventional plug. Because of the flexible nature of the recessed body, the plug of this invention is resistant against impact shocks. -~
Other embodiments falling with the terms of the appended claims, will occur to those skilled in the art.
-, ",.
,': ~' '' ..: ' '
Claims (9)
1. An electrical plug comprising:
an electrically insulative, flexible, hollow body member having an opening therein and an aperture which is provided through a wall of the body member in communication with the interior of the body member and which is adapted to allow an electrical cord to extend therethrough, retaining means provided in a wall of the body member at a location adjacent the said opening of the body member and a hole which is provided an inner surface of a wall of the body member at a location remote from the said retaining means;
an electrically insulative, tine-retaining member for reception in the said opening of the body member, said tine-retaining member having a projection extending outwardly there-from, which projection engages the said retaining means, a hole in said tine-retaining member through which a screw extends into the said hole in the body member thereby fixedly holding the said tine-retaining member within the opening of the said body member, a recessed portion around said hole in said tine-retaining member so as to locate the head of said screw inside the surface of said tine-retaining member, at least two slots provided through the tine-retaining member;
a tine provided through each of said slots, each of said tines having an inner terminal end and an outer end for reception in a receptable and having at least one detent which engages an inner surface of said slot and which holds the tine fixedly in place through the respective slot, said terminal end being bent and being provided with wire-fastening means which is adapted to hold a wire of said cord in electrical contact therewith;
at least one upstanding tab, said tab being integral with said tine-retaining member in a region between two of said slots and adjacent the inner terminal ends of the tines in said two slots, said tab being adapted to prevent contact between the wires held by the wire-fastening means of said tines; and said tine-retaining member being further provided with a recess adjacent the inner terminal end of each slot to provide room for the wire-fastening means associated therewith.
an electrically insulative, flexible, hollow body member having an opening therein and an aperture which is provided through a wall of the body member in communication with the interior of the body member and which is adapted to allow an electrical cord to extend therethrough, retaining means provided in a wall of the body member at a location adjacent the said opening of the body member and a hole which is provided an inner surface of a wall of the body member at a location remote from the said retaining means;
an electrically insulative, tine-retaining member for reception in the said opening of the body member, said tine-retaining member having a projection extending outwardly there-from, which projection engages the said retaining means, a hole in said tine-retaining member through which a screw extends into the said hole in the body member thereby fixedly holding the said tine-retaining member within the opening of the said body member, a recessed portion around said hole in said tine-retaining member so as to locate the head of said screw inside the surface of said tine-retaining member, at least two slots provided through the tine-retaining member;
a tine provided through each of said slots, each of said tines having an inner terminal end and an outer end for reception in a receptable and having at least one detent which engages an inner surface of said slot and which holds the tine fixedly in place through the respective slot, said terminal end being bent and being provided with wire-fastening means which is adapted to hold a wire of said cord in electrical contact therewith;
at least one upstanding tab, said tab being integral with said tine-retaining member in a region between two of said slots and adjacent the inner terminal ends of the tines in said two slots, said tab being adapted to prevent contact between the wires held by the wire-fastening means of said tines; and said tine-retaining member being further provided with a recess adjacent the inner terminal end of each slot to provide room for the wire-fastening means associated therewith.
2. The plug according to Claim 1 wherein the projection of the tine-retaining member is a tab.
3. The plug according to Claim 1 wherein the retaining means in the wall of the hollow body member is a slot provided through the wall of the hollow body.
4. The plug according to Claim 1, 2 or 3 wherein the said detent is a spike.
5. The plug according to Claim 1, 2 or 3 wherein the said tine is bent adjacent the inner end thereof thereby forming the said inner terminal.
6. The plug according to Claim 1, 2 or 3 wherein the wire-fastening means consists of a screw and a threaded hole provided through the terminal.
7. The plug according to Claim 1, 2 or 3 wherein the body member is of the form of a frustum of a rectangular pyramid prism, the said tine-retaining member is of the form of a rectangular configuration.
8. The plug according to Claim 1, 2 or 3 wherein the body member is of the form of a frustum of a rectangular pyramid prism and the tine-retaining member is of the form of a rectangular configuration, said aperture is disposed through a top wall of the body member, which top wall is opposite to the opening of the body member, and said retaining means is disposed in a short wall of the body member.
9. The plug according to Claim 1, 2 or 3 wherein the body member is of the form of a frustum of a rectangular pyramid prism and the tine-retaining member is of the form of a rectangular configuration, said retaining means is disposed in a short wall of the body member, and said aperture is dis-posed through the short wall at a location above the retaining means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA309,052A CA1089047A (en) | 1978-08-10 | 1978-08-10 | Electrical plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA309,052A CA1089047A (en) | 1978-08-10 | 1978-08-10 | Electrical plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1089047A true CA1089047A (en) | 1980-11-04 |
Family
ID=4112092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA309,052A Expired CA1089047A (en) | 1978-08-10 | 1978-08-10 | Electrical plug |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1089047A (en) |
-
1978
- 1978-08-10 CA CA309,052A patent/CA1089047A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |