GB2282494A - Plug for electric wire - Google Patents
Plug for electric wire Download PDFInfo
- Publication number
- GB2282494A GB2282494A GB9418815A GB9418815A GB2282494A GB 2282494 A GB2282494 A GB 2282494A GB 9418815 A GB9418815 A GB 9418815A GB 9418815 A GB9418815 A GB 9418815A GB 2282494 A GB2282494 A GB 2282494A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plug
- cover
- housing
- terminal portion
- electric wire
- 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- Withdrawn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
- 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
- H01R24/30—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable with additional earth or shield contacts
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- 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
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/652—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding with earth pin, blade or socket
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
- H01R4/5008—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using rotatable cam
-
- 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
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
A plug for an electric wire includes a housing base 14; a terminal portion 22 provided on the housing base; a guide passage 56 provided on the housing base so as to guide the wire onto the terminal portion; a housing operating cover 18 capable of being opened and closed, so as to expose and cover the guide passage; and a pressing portion 150 formed on the operating cover and adapted to permit the introduction of the wire along the guide passage onto the terminal portion when the Operating cover is open and to press and hold the wire against the terminal portion when the operating cover is closed so as to establish electrical connection between the wire and the terminal portion. Hence, the attachment of the plug is accomplished easily and speedily in a one-touch operation. The operating cover 18 can open via the housing top 16 or base 14 (figure 18) and can incorporate cable clamping means 162. The wire 92 is clamped to the terminal 22 by a resilient terminal arm 50 or directly by the cover end 150 (figure 10), the terminal 22 overlying a cavity and/or further resilient means. <IMAGE>
Description
Title - Plug for Electric Wire
The present invention relates to a plug for an electric wire.
Standards for plugs for electric wires (hereafter simply referred to as plugs) differ in terms of voltage, shape, and the like depending on countries. For instance, in Europe and America where a number of countries are contiguous to other countries, electric appliances are generally sold without plugs being attached thereto in advance. In addition to purchasing electric appliances, the purchasers purchase plugs conforming to the standards, and attach the plugs themselves.
As shown in Fig. 12, in the case of a plug 102 for a three-wire cord 100, three terminals 106 are provided on a housing base 104, and an insertion hole 108 is provided in each terminal 106. A screw 110 is threadedly engaged in each terminal 106 in a direction orthogonal to the longitudinal direction of the insertion hole 108.
To attach the plug 102 to the three-wire cord 100, an outer jacket 112 of the cord is stripped off by diagonal cutting pliers or the like to expose three wires 116 each having an insulating covering 114, and the insulating covering 114 of each wire 116 is further stripped off to expose a conductor portion 118.
Next, the conductor portion 118 is inserted into the insertion hole 108 in the terminal 106 for each wire 116, and the conductor portion 118 is fixed by means of the screw 110 so as to be connected to the terminal 106. A terminating portion of the outer jacket 112 of the cord is fixed between a cord-holding piece 120 and the housing base 104 by means of screws 122.
A housing cover 124 is then fixed to the housing base 104 by means of a screw 126, and the portions of the wires 116 which are connected to the terminals 106 are shielded between the housing base 104 and the housing cover 124.
In the above-described operation of attaching the plug 102, it is quite troublesome to fix the conductor portions 118 by means of the screws 110 so as to connect the conductor portions 118 to the respective terminals 106, and fix the housing cover 124 to the housing base 104 by means of the screw 126. It is even more troublesome for the purchaser of the electric appliance himself or herself to perform the attaching operation.
In view of the above-described problems, it is an object of the present invention to provide a plug for an electric wire in which the electric wire can be attached to a terminal easily and speedily.
In accordance with a first aspect of the present invention, there is provided a plug for an electric wire characterised by comprising: a housing base; a terminal portion provided on the housing base; a guide passage provided on the housing base so as to introduce the wire onto the terminal portion; a housing operating cover supported by the housing base and disposed in such a manner as to be capable of being opened and closed, so as to expose the guide passage when the housing operating cover is in an open position and cover the guide passage when the housing operating cover is in a closed position; and a pressing portion formed on the housing operating cover and disposed in such a manner as to be capable of abutting against the terminal portion, the pressing portion being adapted to permit the introduction of the wire along the guide passage onto the terminal portion when the housing operating cover is in the open position and to press and hold the wire against the terminal portion when the housing operating cover is in the closed position.
In accordance with a second aspect of the present invention, there is provided a plug for an electric wire characterised by comprising: a housing base; a plug-in pin provided in such a manner as to project from the housing base; a terminal portion provided on the housing base and connected to the plug-in pin; a guide passage provided so as to communicate with the terminal passage, and introducing the wire onto the terminal portion; a housing operating cover supported by the housing base swingably with respect to the housing base and disposed in such a manner as to be capable of being opened and closed to assume an open position by swinging in a direction in which the plug-in pin projects, so as to expose the guide passage when the housing operating cover is in the open position and cover the guide passage when the housing operating cover is in a closed position; and a pressing portion formed on the housing operating cover and disposed in such a manner as to be capable of abutting against the terminal portion, the pressing portion being adapted to permit the introduction of the wire along the guide passage onto the terminal portion when the housing operating cover in in the open position and to press and hold the wire against the terminal portion when the housing operating cover in in the closed position.
In accordance with a third aspect of the present invention, in the plug for an electric wire according to the second aspect of the invention, the terminal portion has a projecting piece whose one end is supported by the terminal portion, and the wire is pressed by a free end of the projecting piece when the housing operating cover is in the closed position.
In accordance with a fourth aspect of the present invention, the plug for an electric wire according to the second aspect of the invention is characterised by further comprising: an immobilizing device for immobilizing an insulating covering portion of the wire by generating a moving -force in a direction in which a diameter of the wire is reduced1 by means of an urging force acting.in a direction in which the wire is removed from the terminal portion.
In accordance with a fifth aspect of the present invention, the plug for an electric wire according to the second aspect of the invention is characterised by further comprising: a screw member for fixing the housing operating cover to the housing base so as to prevent the housing operating cover from being swung to the open position when the housing operating cover is in the closed position.
In accordance with a sixth aspect of the present invention, in the plug for an electric wire according to the second aspect of the invention, the housing base is provided with a grip having an irregular surface provided on an outer peripheral portion thereof in such a manner as to extend in a direction perpendicular to a projecting direction of the plug-in pin.
In accordance with a seventh aspect of the present invention, the plug for an electric wire according to the first aspect of the invention is characterised by further comprising: a resiliently engaging device disposed between the housing operating cover and a fixed cover fixed to the housing base, so as to prevent the swinging motion of the housing operating cover from the closed position to the open position.
In accordance with an eighth aspect of the present invention, the plug for an electric wire according to the second aspect of the invention is characterised by further comprising: a resiliently engaging device disposed between the housing base and the housing operating cover so as to prevent the swinging motion of the housing operating cover from the closed position to the open position.
In accordance with a ninth aspect of the present invention, in the plug for an electric wire according to the second aspect of the invention, the plug-in pin includes a fuse pin, and the plug for an electric wire further comprises: a fuse cover provided on the housing base and disposed in such a manner as to be capable of being opened and closed on a plug-in-pin projecting side of the housing base; a holding portion for holding a fuse and disposed on a surface of thickness-wise surfaces of the fuse cover so as to project in a direction opposite to a direction in which the plug-in pins project; and a fuse holder provided on the housing base to resiliently engage and hold the fuse and allow the fuse to be attached and detached from the fuse holder as the fuse cover is opened and closed.
In the arrangement in accordance with each of the above-described first to eighth aspects of the present invention, when the housing operating cover is in the open position, the guide passage is exposed, and the wire is passed along the guide passage and is introduced onto the terminal portion. The pressing portion of the operating cover is capable of abutting against the terminal portion, and then the housing operating cover is closed, the pressing portion presses and holds the wire introduced onto the terminal portion against the terminal portion so as to establish connection between the wire and the terminal portion. Hence, the attachment of the plug is accomplished easily and speedily in a one-touch operation.
In accordance with the second aspect of the present invention, since the housing operating cover is opened on the pin-projecting side of the plug, the housing operating cover cannot be opened in a state in which the plug-in pin is plugged in a receptacle or the like. To open the housing operating cover, it is necessary to pull out the plug from the receptacle or the like.
In accordance with the third aspect of the present invention, since the wire is pressed and held by the free end of the projecting piece, the pressing and holding force is strengthened.
In accordance with the fourth aspect of the present invention, the prevention of the coming off of the wire is reinforced.
In accordance with the fifth aspect of the present invention, the operation of the screw member is required when the housing operating cover is opened and closed.
In accordance with the sixth aspect of the present invention, a sufficiently large finger-gripping force can be obtained with respect to the inserting and withdrawing operation of the plug.
In accordance with the seventh and eighth aspects of the present invention, the cancellation of engagement of the resiliently engaging device and the engagement thereof are effected when the housing operating cover is opened and closed.
In accordance with the ninth aspect of the present invention, at the time of replacement or the like of the fuse, it becomes possible to detach and attach the fuse by merely opening the fuse cover, facilitating the operation.
In addition, since the fuse cover is opened in the projecting direction of the plug-in pin in the same way as the housing operating cover in accordance with the second aspect of the present invention, it is necessary to pull out the plug from the receptacle or the like in order to open the fuse cover.
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is an exploded perspective view illustrating a first embodiment of a plug for an electric wire;
Fig. 2 is a partially cutaway plan view of the plug for an electric wire in accordance with the first embodiment;
Fig. 3 is a perspective view, as seen from the reverse side of the plug, of the plug for an electric wire in accordance with the first embodiment;
Fig. 4 is a cross-sectional view of the plug for an electric wire in accordance with the first embodiment with an operating cover set in an open position;
Fig. 5 is a cross-sectional view of the plug for an electric wire in accordance with the first embodiment with the operating cover set in a closed position;
Fig. 6 is a perspective view, as seen from a base side, of the operating cover of the plug for an electric wire in accordance with the first embodiment;
Fig. 7 is a perspective view, as seen from the base side, of a fixed cover of the plug for an electric wire in accordance with the first embodiment;
Fig. 8 is a perspective view, as seen from the obverse side of the plug, of the plug for an electric wire in accordance with the first embodiment in a state in which the operating cover is located in an intermediate position between the open position and the closed position;
Fig. 9 is a plan view, as seen from the cover side, of the base of the plug for an electric wire in accordance with the first embodiment;
Fig. 10 is a cross-sectional view of essential portions of a plug for an electric wire in accordance with a second embodiment in which the operating cover is in the open position;
Fig. 11 is a cross-sectional view of the essential portions of the plug for an electric wire in accordance with the second embodiment in which the operating cover is in the closed position;
Fig. 12 is an exploded perspective view of a conventional plug for an electric wire;
Fig. 13 is an exploded perspective view of a housing of a plug for an electric wire in accordance with a third embodiment;
Fig. 14 is a perspective view, as seen from the reverse side of the plug, of the plug for an electric wire in accordance with the third embodiment;
Fig. 15 is a perspective view, as seen from the reverse side of the plug at an angle different from that of Fig. 14, of the plug for an electric wire in accordance with the third embodiment;
Fig. 16 is a diagram of the plug for an electric wire in accordance with the third embodiment, in which the fixed cover is omitted and only essential portions on the pinprojecting side are viewed;
Fig. 17 is a perspective view of each terminal plate of the plug for an electric wire in accordance with the third embodiment;
Fig. 18 is a cross-sectional view, taken along the projecting direction of the pins, of the plug for an electric wire in accordance with the third embodiment;
Fig. 19 is a diagram illustrating a state in which the operating cover is closed, and corresponding to Fig. 18;
Fig. 20 is a view, as seen from the projecting direction of the pin, of the fixed cover for the plug for an electric wire in accordance with the third embodiment;
Fig. 21 is a diagram illustrating a state in which the operating cover is opened, and corresponding to Fig. 14;
Fig. 22 is a perspective view, as seen from the obverse side of the plug, of the plug for an electric wire in accordance with the third embodiment;
Fig. 23 is a partially cutaway perspective view, as seen from the reverse side of the plug, of a plug for an electric wire in accordance with a fourth embodiment; and
Fig. 24 is a cross-sectional view, taken along the projecting direction of the pins, of the plug for an electric wire in accordance with the fourth embodiment.
Referring now to Figs. 1 to 9, a description will be given of a first embodiment of a plug for an electric wire in accordance with the present invention.
As shown in Figs. 1 and 2, a plug 10 for an electric wire (hereafter simply referred to as the plug) has a housing 12 which is comprised of a base 14, a fixed cover 16, and an operating cover 18.
The base 14 is formed in a rectangular shape as seen in a plan view. A side terminal plate 20, an earthing terminal plate 22, a fuse terminal plate 24, and a holder supporting plate 26 are disposed on an inner surface of the base 14 (i.e., an inner surface of the housing 12). One ends of the side terminal plate 20, the earthing terminal plate 22, and the holder supporting plate 26 are respectively fitted in neck portions 29, 31, and 33 at proximal ends of a side pin 28, an earthing pin 30, and a fuse pin 32 (see Fig. 3) penetrating the base 14 in its thicknesswise direction.
Distal end portions of the side pin 28, the earthing pin 30, and the fuse pin 32 project outward from an outer surface of the base 14 (i.e., the surface thereof opposite to the inner surface), and are used as portions to be inserted into an unillustrated receptacle. The side pin 28, the earthing pin 30, and the fuse pin 32 constitute plug-in pins.
A holder 34 is provided at one end of the fuse terminal plate 24, and is formed in an annular shape in which a portion thereof is made open. Also, a holder 36, which is similar to the holder 34, is provided at another end of the holder supporting plate 26 in face-to-face relation to the holder 34. Both ends of a fuse 38 are resiliently clamped by the holders 34 and 36, so that the fuse 38 is detachably held by and between the holders 34 and 36. Projections 21 formed on the base 14 are fitted in intermediate portions of the side terminal plate 20 and the fuse terminal plate 24.
Four rising pieces 40, 42, 44, and 46 are formed in vicinities of one end of the base 14 in such a manner as to rise up from the inner surface of the base 14. The four rising pieces 40, 42, 44, and 46 are arranged in mutually spaced-apart relation to each other, and the other ends of the side terminal plate 20, the earthing terminal plate 22, and the fuse terminal plate 24 are respectively interposed between adjacent ones of the rising pieces 40, 42, 44, and 46. At each of these other ends (which are used as terminal portions), if a description is given by taking the terminal plate 22 as an example, the terminal plate 22 is turned up substantially in a U-shape, and a turned-up portion 48 of the terminal plate is bent in a V-shape with an apex portion 50 of the V-shape projecting towards a preturning-up portion 52 of the terminal plate, as shown in Fig. 4.
As shown in Figs. 1 and 2, at a central portion of the inner surface of the base 14, guide passages 54, 56, and 58 are provided in correspondence with the other ends of the side terminal plate 20, the earthing terminal plate 22, and the fuse terminal plate 24, respectively. The respective guide passages 54, 56, and 58 are formed as grooves by being defined by extending pieces 60, 62, 64, and 66 which are formed in such a way as to continue from the rising pieces 40, 42, 44, and 46, respectively. A communicating port 70 is formed in a turned-up bottom portion 68 of each terminal plate. Through this communicating port 70, each of the guide passages 54, 56, and 58 is made to communicate with a space formed between the turned-up portion 48 of the terminal plate and the preturning-up portion 52 of the terminal plate.
As shown in Fig. 4, when three wires 90 with insulating coverings of a three-wire cord 88 are respectively advanced towards the turned-up bottom portions 68 of the terminal plates along the guide passages 54, 56, and 58, conductor portions 92 are passed through the communicating ports 70 and are each inserted into the space formed between the turned-up portion 48 of the terminal plate and the preturning-up portion 52 of the terminal plate.
The width of each of the guide passages 54, 56, and 58 is made gradually narrow towards the communicating port 70 in the turned-up bottom portion 68 of each terminal plate.
In the vicinity of the communicating port 70, this width is made substantially equal to the width of the communicating port 70. Hence, the conductor portions 92 are capable of passing through the communicating ports 70 smoothly. The turned-up portion 48 of the terminal plate is resiliently deformable, and is deflected with the turned-up bottom portion 68 of the terminal plate as a fulcrum. Normally, as shown in Fig. 4, at the apex portion 50 of the V-shape, the turned-up portion 48 of the terminal plate and the preturning-up portion 52 of the terminal plate are spaced apart from each other to the extent that the introduction of the conductor portion 92 is allowed. When the turned-up portion 48 of the terminal plate is pressed towards the preturning-up portion 52 of the terminal plate, the conductor portion 92 introduced to the apex portion 50 of the V-shape is pressed and held by being clamped by the turned-up portion 48 of the terminal plate and the preturning-up portion 52 of the terminal plate at the apex portion 50 of the V-shape, as shown in Fig. 5.
The fixed cover 16 has an opening 72 extending from a central portion of the base 14 to the other end thereof in such a manner as to oppose the guide passages 54, 56, and 58, and covers a peripheral portion of the base 14. It should be noted that the fixed cover 16 is fixed as tapping screws 74 (see Fig. 3) passing through screw holes 166 (see
Fig. 9) in the base 14 from the outer surface side of the base 14 are screwed into tapping screw holes 168 in the fixed cover 16.
As the fixed cover 16 is fixed to the base 14, the side terminal plate 20, the earthing terminal plate 22, the fuse terminal plate 24, and the holder supporting plate 26 are clamped onto the base 14. The removal and attachment of the fuse 38 are effected after removing the fixed cover 16 from the base 14.
As shown in Fig. 8, the operating cover 18 is provided in the opening 72 of the fixed cover 16. As shown in Fig.
1, the outermost rising pieces 40 and 46 of the rising pieces 40, 42, 44, and 46 are raised high, and have supporting holes 84, respectively. A support pin 86 is inserted into the supporting holes 84, and both ends of the support pin 86 are supported therein. The support pin 86 is disposed in such a manner as to be located above the turnedup portions 48 of the side terminal plate 20, the earthing terminal plate 22, and the fuse terminal plate 24. In a state in which the operating cover 18 is provided in the opening 72 of the fixed cover 16, the support pin 86 fits in fitting holes 151 in three projections 150 formed at one end of the operating cover 18, so that the operating cover 18 is rotatable about the support pin 86. The operating cover 18 is capable of assuming an opening position (the position shown in Fig. 4) in which the opening 72 is opened to expose the guide passages 54, 56, and 58 and a closed position (the position shown in Fig. 5) in which the opening 72 is closed to cover the guide passages 54, 56, and 58 between the operating cover 18 and the base 14.
The projections 150 of the operating cover 18 constitute a pressing portion, and outer peripheral portions of the projections 150 are capable of abutting against and engaging with turned-up distal ends 154 of the terminal plates. When the operating cover 18 is in the open position, the introduction of the turned-up portions 48 of the conductor portions 92 is allowed, whereas when the operating cover 18 is in the closed position, the projections 150 press the turned-up distal ends 154 of the terminal plates so as to press and hold the conductor portions 92 against the turned-up portions 48 of the terminal plates.
A retaining piece 98, which is cut out with a U-shaped slit 97 (see Fig. 4) surrounding the retaining piece 98 on three sides, is formed on either side wall at the other end portion of the operating cover 18. Meanwhile, a retaining recessed portion 156 corresponding to the retaining piece 98 is formed in either side wall of the fixed cover 16 facing the opening 72. The retaining piece 98 is resiliently deformable in the inward and outward directions of the operating cover 18 with one end thereof serving as a fulcrum. When the operating cover 18 is closed, the retaining pieces 98 are inserted into and retained by the retaining recessed portions 156, thereby maintaining the closed position of the operating cover 18. To open the operating cover 18, a slender screwdriver or the like is inserted into each of the retaining recessed portions 156 through an open-operation port 155 formed in the base 14 in such a manner as to lead to the retaining recessed portion 156, so as to deflect the retaining piece 98 inwardly of the operating cover 18, thereby canceling the retention of the retaining piece 98 with respect to the retaining recessed portion 156. The retaining pieces 98 and the retaining recessed portions 156 constitute resiliently engaging means.
As shown in Figs. 5, 6 and 7, when the operating cover 18 is in the closed position, a cord leading-in port 60 is formed at the other end of the operating cover 18 between the same and the other end of the fixed cover 16. In the cord leading-in port 160, protrusions 162 are formed on the inner surface of the base 14 (see Fig. 1) and on the inner surface of the operating cover 18. A terminating portion of an outer jacket 96 of the cord 88 is immobilized by the protrusions 162. As a result, the cord 88 is prevented from coming off. The protrusions 162 constitute an immobilizing means.
Next, a description will be given of the operation of the first embodiment.
First, the outer jacket (covering) 96 of the cord is stripped off to expose the three wires 90 with insulating coverings, and the insulating covering 91 of each wire 90 is stripped off to expose the conductor portion 92.
As shown in Fig. 4, when the operating cover 18 is in the open position, if each wire 90 is inserted towards the turned-up bottom portion 68 of each terminal plate along each of the guide passages 54, 56, and 58, the conductor portion 92 passes through the communicating port 70 in the turned-up bottom portion 68 of the terminal plate, and enters the space between the turned-up portion 48 of the terminal plate and the preturning-up portion 52 of the terminal plate.
In a state in which the conductor portions 92 have reached the apex portions 50 of the V-shape, if the operating cover 18 is closed, as shown in Fig. 5, the projections 150 press the turned-up distal ends 154 of the terminal plates, and the conductor portions 92 are clamped by the turned-up portions 48 of the terminal plates and the preturning-up portions 52 of the terminal plates, thereby connecting the wires.
As a result, the attachment of the plug for an electric wire is accomplished easily and speedily. In other words, the attachment of the plug is effected in a one-touch operation. The plug in accordance with this embodiment is effective in cases where the plug is not provided at the time of the purchase of an electric appliance, and the purchaser of the electric appliance needs to attach the plug himself or herself, and in other cases where the plug needs to be attached and replaced.
It should be noted that if the operating cover 18 is rotated from the closed position to the open position, the turned-up portions 48 of the terminal plates are shifted from a pressing and holding position to an introduction allowing position, thereby making it possible to remove the wire.
Next, a description will be given of a second embodiment with reference to Figs. 10 and 11.
In the second embodiment, the other end portions of the side terminal plate, the earthing terminal plate, and the fuse terminal plate (only an earthing terminal plate 202 being shown in Figs. 10 and 11), unlike the first embodiment in which they are turned up substantially in a U-shape, are formed substantially in an L-shape in which, after extending between adjacent ones of the rising pieces 40, 42, 44, and 46, their distal ends are bent orthogonally towards a base 204. Hereafter, a description will be given of only the earthing terminal plate 202 (the side terminal plate and the fuse terminal plate are arranged in a similar manner). A recess 210 is formed in the base 14 in face-to-face relation to a straight portion 206 which extends straight. When an operating cover 212 is in the open position shown in Fig.
10, the straight portion 206 maintains its straight state, and a projection 214 of the operating cover 212 is spaced apart from the straight portion 206 to the extent that the introduction of the conductor portion 92 between them is allowed. When the operating cover 212 is in the closed state shown in Fig. 11, the straight portion 206 is pressed by the projection 214 of the operating cover 212 with the conductor portion 92 placed therebetween and is resiliently bent within the recess 210 while being supported on both sides thereof. Thus, the conductor portion 92 is pressed and held by being clamped by the projection 214 of the operating cover 212 and the straight portion 206 of the earthing terminal plate 202.
The other arrangement, operation and effect are similar to those of the first embodiment.
In the above-described second embodiment, the other end portion (straight portion 206) of the earthing terminal plate 202 is provided in such a manner as to oppose the recess 210, and the straight portion 206 is made resiliently deformable. However, the straight portion 206 itself may not be resiliently deformable, and an arrangement may be provided such that a soft, resiliently deformable member formed of an electrically nonconductive material is provided in such a manner as to oppose the recess 210 in the same way as the straight portion 206, and is formed integrally with the base 204, and an electrically conductive material is attached to the surface of the member.
Alternatively, a resiliently deformable elastic material may be filled in the recess 210, and it suffices insofar as the conductor portion 92 can be pressed against the terminal portion when the operating cover is in the closed position.
Next, a description will be given of a third embodiment of the plug for an electric wire with reference to Figs. 13 to 22.
As shown in Figs. 13 to 15, a plug for an electric wire (hereafter simply referred to as the plug) 300 has a housing 302 which is comprised of a base 304, a fixed cover 306, an operating cover 308, and a fuse cover 310. The base 304 and the fixed cover 306 are each shaped like a solid body with rounded side edges and a shallow bottom and having one end open, and are provided in such a manner that peripheral ends of their openings oppose each other and match. The operating cover 308 and the fuse cover 310 are disposed in a first opening 314 and a second opening 316, respectively, which are formed in a base bottom 312. The first opening 314 is formed in a rectangular shape, and is provided in a central portion between a first side 318 a 314 (i.e., on the first side 318 side and the second side 320 side), respectively, and pin holes 326 and 328 are formed in the cylinders 338, respectively. Also, a pin hole 330 is formed between the first opening 314 and the fourth side 324. Proximal end portions of a side pin 332, a fuse pin 334, and an earthing pin 336 are inserted into the pin holes 326, 328, and 330, respectively. Meanwhile, distal end portions of the side pin 332, the fuse pin 334, and the earthing pin 336 project from the pin holes 326, 328, and 330 outwardly of the base bottom 312, i.e., in the direction in which the base 304 and the fixed cover 306 are opposed to each other (the direction in which the pins project is indicated by arrow A), and are used as portions to be inserted into an unillustrated receptacle. The side pin 332, the fuse pin 334, and the earthing pin 336 constitute plug-in pins. The side pin 332, the fuse pin 334, and the earthing pin 336 are formed as plates having large thicknesses, and proximal end portions of the side pin 332, the fuse pin 334, and the earthing pin 336 are provided with small thicknesses to restrict the amount of insertion of the side pin 332, the fuse pin 334, and the earthing pin 336 into the pin holes 326, 328, and 330. It should be noted that the thicknesses of the cylinders 338 into which the proximal end portions of the side pin 332 and the fuse pin 334 are respectively inserted are made identical to the thicknesses of the side pin 332 and the fuse pin 334.
An engaging projection 390 (see Fig. 18) is formed on the fourth side 324 of the base 304, while a rectangular hole portion 394 corresponding to the engaging projection 390 is formed in a fourth side 392 of the fixed cover 306 opposing the fourth side 324 of the base 304. A pair of screw through holes 396 are formed on both sides of the first opening 314, respectively, at positions closer to the third side 322 side with respect to the pin holes 326 and 328, and a pair of hollow cylindrical portions 398 are formed on an inner surface of the bottom of the fixed cover 306 in correspondence with the screw through holes 396. The base 304 and the fixed cover 306 are joined and fixed together by inserting the engaging projection 390 into the rectangular hole portion 394 and by passing tapping screws 400 (see Fig. 14) into the screw through holes 396 and threadedly tightening the tapping screws 400 into the hollow cylindrical portions 398.
As shown in Figs. 16 to 18, an earthing terminal plate 340 is provided on the inner surface of the base 304 (i.e., on the surface opposing the fixed cover 306) in correspondence with the earthing pin 336. The earthing terminal plate 340 is formed in the shape of an elongated plate. A substantially intermediate portion of the earthing terminal plate 340 is turned up such that an actuating piece 344 (on the base 304 side), i.e., one bent portion of the earthing terminal plate 340, and an opposing piece 346 (on the fixed cover 306 side), i.e., the other portion thereof, oppose each other in the projecting direction of the pin (i.e., in the direction in which the base 304 and the fixed cover 306 oppose each other) - Portions of the earthing terminal plate 340 at its turned-up proximal end portion are superposed one on top the other, and a fitting hole 342 is provided therein in such a manner as to penetrate these superposed portions. A small projection 343 provided at a proximal end of the earthing pin 336 is passed through the fitting hole 342 and is caulked. For this reason, the ear thing terminal plate 340 abuts against edges of the pin hole 330, so that the earthing pin 336 is prevented from coming off. A turned-up distal end portion of the opposing piece 346 of the ear thing terminal plate 340 extends so as to oppose the first opening 314, while the actuating piece 344 opposing the opposing piece 346 is inclined in the projecting direction of the pin, and forms a substantially
V-shaped configuration together with the opposing piece 346.
A fuse terminal plate 348 and a side terminal plate 350 are provided on the inner side of the base 304 on both sides of the earthing terminal plate 340, and the earthing terminal plate 340, the fuse terminal plate 348, and the side terminal plate 350 are arranged in parallel and constitute a terminal section. In the same way as the earthing terminal plate 342, each of the fuse terminal plate 348 and the side terminal plate 350 is formed in the shape of an elongated plate and is turned up such that its turnedup distal end portion extends so as to oppose the first opening 314, and the actuating piece 344 and the opposing piece 346 are formed in such a manner as to oppose each other.
As shown in Figs. 16 and 17, a projection 352 formed on the base 304 is fitted in and caulked over a fitting hole 351 provided in the superposed turned-up distal end portion of the side terminal plate 350, thereby fixing the side terminal plate 350 to the base 304. A branched piece 354, which is bent from the opposing piece 346 at the turned-up proximal end portion of the side terminal plate 350 and extends towards the proximal end of the side pin 332, is formed on the side terminal plate 350. A fitting hole 356 is formed at a distal end of the branched piece 354, and a small projection 333 provided at the proximal end of the side pin 332 is fitted in and caulked over the fitting hole 356. As a result, the side terminal plate 350 abuts against edges of the cylinder 338 shown in Fig. 13, and the side pin 332 is prevented from coming off.
A projection 352 formed on the base 304 is also fitted in and caulked over a fitting hole 351 provided in the turned-up proximal end portion of the fuse terminal plate
,e 348, thereby fixing the fuse terminal plate 348 to the base 304. A branched piece 356 is formed in a bent manner on the opposing piece 346 at the turned-up proximal end portion of the fuse terminal plate 348, and a fuse holder 358 is provided at a distal end portion of the branched piece 356 so as to be disposed in the second opening 316.
A holder supporting plate 360 is provided on the inner side of the base 304 in correspondence with the proximal end of the fuse pin 334. A fitting hole 362 is formed in the holder supporting plate 360, and a small projection 335 provided at a proximal end of the fuse pin 334 shown in Fig.
14 is fitted in and caulked over the fitting hole 362. As a result, the holder supporting plate 360 abuts against edges of the cylinder 338, thereby preventing the fuse pin 334 from coming off. A fuse holder 364, which is similar to the fuse holder 358, is formed on the holder supporting plate 360 so as to be disposed in the second opening 316. The fuse holders 358 and 364 are opposed to each other in the longitudinal direction of the second opening 316, and are formed in an arcuate shape to resiliently clamp opposite ends of a fuse 368 shown in Fig. 15. The fuse 368 is disposed with its axis set in the longitudinal direction of the second opening 316, and is held detachably by the fuse holders 358 and 364.
As shown in Fig. 15, the fuse cover 310 is formed in the shape of an elongated plate corresponding to the second opening 316. An annular portion (i.e., a holding portion) 366 is provided on the inner surface of the fuse cover 310, and an intermediate portion of the fuse 368 is inserted in the annular portion 366. For instance, after the fuse cover 310 is opened as shown in Fig. 15, if one longitudinal end of the fuse 368 (on the fourth side 324 side of the base 304) is pulled in the projecting direction of the pin, the fuse 368 can be removed from the fuse holders 358 and 364, thereby permitting the replacement or the like of the fuse 358.
As shown in Figs. 13 and 20, four rising pieces 370, 372, 374, and 376 are formed on the fixed cover 306 in mutually spaced-apart relation to each other in such a manner as to project into the first opening 314. Each of the rising pieces 370, 372, 374, and 376 extends along the longitudinal direction of the first opening 314, and guide passages 378, 380, and 382 are formed between adjacent ones of the rising pieces 370, 372, 374, and 376, respectively.
These guide passages 378, 380, and 382 lead to the side terminal plate 350, the earthing terminal plate 340, and the fuse terminal plate 348, and are used to guide each wire between the actuating piece 344 and the opposing piece 346 of each terminal plate.
As shown in Figs. 17 and 18, a projecting piece 384 is fixed to the actuating piece 344 of each of the side terminal plate 350, the earthing terminal plate 340, and the fuse terminal plate 348, and a free end of the projecting piece 384 is bent in a substantially L-shaped configuration towards the opposing piece 346. An indented portion 386 is formed in the actuating piece 346 in correspondence with the free end of each projecting piece 384 whose other end is supported by the actuating piece 344. In addition, an indented portion 388 is formed in the actuating piece 344 at a position closer to the fitting hole 342 relative to the indented portion 386 of the opposing piece 346. The conductor portion 92 of the wire 90 is made capable of reaching a farthest position between the actuating piece 344 and the opposing piece 346.
As shown in Figs. 18 and 20, the three wires 90 with insulating coverings of the three-wire cord 88 are respectively advanced along the guide passages 378, 380, and 382, and the conductor portions 92 are each introduced into the space formed between the actuating piece 344 and the opposing piece 346.
The actuating piece 344 is made resiliently deformable and is deflected in a cantilevered manner. Normally, the free end of the projecting piece 384 and the opposing piece 346 are spaced apart from each other to the extent that the introduction of the conductor portion 92 is allowed, as shown in Fig. 18. When the actuating piece 344 is pressed towards the opposing piece 346, the conductor portion 92 which has been introduced to the farthest position between the actuating piece 344 and the opposing piece 346 is pressed and held in such a manner that the free distal end of the projecting piece 384 bites into the indented portion 386. It should be noted that the opposing piece 346 is supported by ribs 452 (shown in Figs. 18 and 19) formed on the fixed cover 306 in such a manner as to project from the inner surface of the bottom thereof, so as to oppose the pressing force due to the actuating piece 344.
As shown in Fig. 13, the operating cover 308 has an elongated shape corresponding to the first opening 314, and has swinging shafts 402 projecting respectively from transverse sides thereof at a longitudinal end, i.e., a proximal end, of the operating cover 308, which is located on the fourth side 324 side. A supporting recess 406- is formed in each side wall 404 forming the first opening 314, in correspondence with the swinging shaft 402. The swinging shafts 402 inserted in the supporting recesses 406 are supported by apex portions 408 of the rising pieces 370 and 376 opposing the supporting recesses 406 as the base 304 and the fixed cover 306 are joined Thus, the operating cover 308 is made swingable about the swinging shafts 402. If the longitudinal other end (the end on the third side 322 side), i.e., the distal end, of the operating cover 308 is pulled in the direction of A, the operating cover 308 can be opened in the projecting direction of the pins, and is capable of assuming the open position (the position shown in Fig. 18) in which the operating cover 308 is opened to expose the guide passages 378, 380, and 382 and the closed position (the position shown in Fig. 19) in which the operating cover 308 is closed to cover the guide passages 378, 380, and 382 between the operating cover 308 and the base 394.
As shown in Figs. 18, 19, and 21, three projections (pressing portions) 410 are formed at the proximal end of the operating cover 308 in the vicinity of the swinging shafts 402 in correspondence with the respective actuating pieces 344 of the fuse terminal plate 348, the earthing terminal plate 340, and the side terminal plate 350. Outer peripheral portions of the projections 410 are capable of abutting against and engaging with the respective actuating pieces 344. When the operating cover 18 is in the open position, the introduction of the conductor portions 92 between the actuating piece 344 and the opposing.piece 346 is allowed, whereas when the operating cover 18 is in the closed position, the projections 410 press the actuating pieces 344 so as to press and hold the conductor portions 92 by means of the actuating pieces 344 and the opposing pieces 346.
In a longitudinally intermediate portion of the operating cover 308, a stepped portion 412 is provided in a recessed manner on an outer surface of each side wall opposing the side wall 40 forming the first opening 314.
Meanwhile, a retaining projection 414 is formed on each side wall 404 in correspondence with the stepped portion 412. As the retaining projections 414 are resiliently engaged with the stepped portions 412, when the operating cover 18 is closed, the closed position of the operating cover 18 is maintained. To open the operating cover 18, if a slender screwdriver. or the like is inserted through each recess 450 leading to the stepped portion 412 towards the stepped portion 412 so as to separate the engaging projection 414 from the stepped portion 412, the resilient engagement between the retaining projection 414 and the stepped portion 412 is canceled. The retaining projections 414 and the stepped portions 412 constitute resiliently engaging means.
A third side 416 of the fixed cover 306 opposing the third face 322 of the base 304 is notched in a rectangular shape at a position corresponding to the first opening 314.
A portion of the third side 322 of the base 304 projects into the notched portion, and a U-shaped hole serving as a cord leading-in port and communicating with the first opening 314 is formed in the projecting portion. In the vicinity of the cord leading-in port 418, a pair of tightening pieces (immobilizing means) 420 are formed in a projecting manner on the inner surface of the bottom of the fixed cover 306 such that an interval therebetween becomes gradually narrower in a direction away from the third side 416 as viewed in the direction in which the fixed cover 306 and the base 304 are opposed (see Fig. 20). A terminating portion of the outer jacket 96 of the cord 88 is immobilized by the pair of tightening pieces 420. The tightening pieces 420 produce a deforming force (moving force) whereby the interval between the tightening pieces 420 is reduced with respect to an urging force acting in the direction in which the cord 88 is withdrawn or comes off. Consequently, the prevention of the coming off of the cord is strengthened.
As also shown in Fig. 22, an indented grip 424 is formed in a circumferential direction on the first side 318 and the second side 320 of the base 304 and a first side 422 and a second side 480 of the fixed cover 306 which oppose them. As a result, an irregular surface is formed on the peripheral portions of the base 304 and the fixed cover 306 in a direction perpendicular to the projecting direction of the pins, so that a sufficiently large gripping force can be obtained with respect to the inserting and withdrawing operation of the plug 300.
Next, a description will be given of the operation of the third embodiment.
The operating cover 308 is opened, and the wires 90 are advanced along the guide passages 378, 380, and 382 until each of the conductor portions 92 enters between the actuating piece 344 and the opposing piece 346.
In a state in which each of the conductor portions 92 has reached the farthest position between the actuating piece 344 and the opposing piece 346, if the operating cover 308 is closed, the projections 410 press the actuating pieces 344, so that each of the conductor portions 92 is clamped by the free end of the projecting piece 384 against the opposing piece 346, thereby connecting the wires.
If the operating cover 308 is swung from the closed position to the open position by lifting its distal end, the actuating pieces 344 resume their original positions due to their resiliency, so that the wires can be removed from between the actuating pieces 344 and the opposing pieces 346.
Consequently, since the operating cover 308 is opened in the projecting direction of the pins, i.e., the operating cover 308 is operated from the reverse side of the plug, the operating cover 308 cannot be opened with the plug 300 plugged in the receptacle or the like. To open the operating cover 308, it is necessary to pull out the plug 300 from the receptacle or the like.
In addition, since the conductor portions 92 are pressed and held by the free ends of the projecting pieces 384, the pressing and holding force is reinforced.
Moreover, since the conductor portions 92 are pressed and held by causing the free ends of the projecting pieces 384 to enter the indented portions 386, the pressing and holding force is further reinforced.
Furthermore, at the time of replacement or the like of the fuse 368, it becomes possible to detach and attach the fuse 368 by merely opening the fuse cover 310, facilitating the operation. In addition, since the fuse cover 310 is opened in the projecting direction of the pins, i.e., is operated from the reverse side of the plug, in the same way as the operating cover 308, it is necessary to pull out the plug 300 from the receptacle or the like in order to open the fuse cover 310.
In this embodiment as well, the attachment of the plug for an electric wire is accomplished easily and speedily, and the attachment of the plug is effected in a one-touch operation, and the other arrangement, operation and effect are similar to those of the first embodiment.
Next, a description will be given of a fourth embodiment with reference to Figs. 23 and 24.
In the third embodiment, the base 304 and the fixed cover 306 are joined together separately from the operating cover 308, and the closed state of the operating cover 308 is maintained through the engagement of the stepped portions 412 on the operating cover 308 and the projections 414 on the base 304. In this embodiment, however, an operating cover 500 has at its distal end a pair of projections 502 formed integrally therewith at transversely opposite ends thereof. A pair of recesses are formed in a base 504 at positions corresponding to the projections 502. Formed in each of the projections 502 are the screw through hole 396 (not shown) in the base 504 provided in the same way as the base 304 of the third embodiment and the cylindrical portion 398 (not shown) on a fixed cover 512 provided in the same way as the fixed cover 306 of the third embodiment. As the tapping screw (screw member) 400 is passed through each pair of the screw through hole 396 and the cylindrical portion 398 to threadedly tighten them, the operating cover 500, the base 504, and the fixed cover 512 are fixed together. The swinging of the operating cover 500 is prevented in its closed position.
In addition, a tightening piece 508 is formed on the inner surface of the bottom of the base 504 in such a manner as to project therefrom in the vicinity of the cord leadingin port 418, while a tightening piece 510 is formed on the inner surface of the bottom of the operating cover 500 in such a manner as to project therefrom. As the tapping screws 400 are tightened, the terminating portion of the outer jacket 96 of the cord 88 is immobilized by the two tightening pieces 508 and 510. It should be noted that the tightening pieces 508 and 510 constitute the immobilizing means.
In accordance with this embodiment, each time the operating cover 500 is opened and closed, it is necessary to loosen and tighten the tapping screws 400. However, after each conductor portion is introduced along the guide passage between the actuating piece and the opposing piece, and the operating cover 500 is closed, each of the wires introduced into the space between the actuating piece and the opposing piece can be pressed and held by the actuating piece and the opposing piece. It should be noted that the screw means is not confined to the tapping screw 400.
In this embodiment as well, the other arrangement, operation and effect, including the easy and speedy attachment of the plug for an electric wire in a one-touch operation, are similar to those of the third embodiment.
The present invention is not confined to the abovedescribed embodiments, and various modifications are possible without departing from the gist of the present invention. For instance, although in the foregoing embodiments a description has been given of a plug for a three-wire cord, the cord may have two or four or more wires, or may have a single wire.
In addition, although in the foregoing embodiments the operating cover is arranged to be opened and closed by being made rotatable or swingable, it is possible to adopt an arrangement in which the operating cover is made slidable instead of being made rotatable or swingable.
Claims (21)
1. A plug for an electric wire characterised by comprising:
a housing base;
a terminal portion provided on said housing base;
a guide passage provided on said housing base so as to introduce the wire onto said terminal portion;
a housing operating cover supported by said housing base and disposed in such a manner as to be capable of being opened and closed, so as to expose said guide passage when said housing operating cover is in an open position and cover said guide passage when said housing operating cover is in a closed position; and
a pressing portion formed on said housing operating cover and disposed in such a manner as to be capable of abutting against said terminal portion, said pressing portion being adapted to permit the introduction of the wire along said guide passage onto said terminal portion when said housing operating cover is in the open position and to press and hold the wire against said terminal portion when said housing operating cover is in the closed position.
2. A plug for an electric wire according to Claim 1, characterised by further comprising:
a resiliently engaging device disposed between said housing operating cover and a fixed cover fixed to said housing base, so as to prevent the swinging motion of said housing operating cover from the closed position to the open position.
3. A plug for an electric wire according to Claim 2, wherein said resiliently engaging device is constituted by a retaining piece provided on said housing operating cover and a retaining recessed portion provided on said fixed cover, and said retaining piece and said retaining recessed portion are provided in such a manner as to engage with each other when said housing operating cover is in the closed position.
4. A plug for an electric wire according to Claim 1, characterised by further comprising:
a fixed cover fixed to said housing base for covering at least a portion of said terminal portion.
5. A plug for an electric wire according to Claim 1, wherein said terminal portion is formed by being turned up at a substantially intermediate portion in a longitudinal direction thereof, and as a longitudinal one end portion of said terminal portion is pressed by said pressing portion, the wire is clamped by said one longitudinal end portion of said terminal portion and a longitudinal other end portion thereof.
6. A plug for an electric wire according to Claim 1, wherein said housing base has a recessed portion notched in a direction of thickness of said terminal portion at a position where said terminal portion is provided, said recess portion is provided to allow said terminal portion to be deformed and project into said recessed portion when said terminal portion is pressed by said pressing portion via the wire.
7. A plug for an electric wire characterised by comprising:
a housing base;
a plug-in pin provided in such a manner as to project from said housing base;
a terminal portion provided on said housing base and connected to said plug-in pin;
a guide passage provided so as to communicate with said terminal passage, and introducing the wire onto said terminal portion;
a housing operating cover supported by said housing base swingably with respect to said housing base and disposed in such a manner as to be capable of being opened and closed to assume an open position by swinging in a direction in which said plug-in pin projects, so as to expose said guide passage when said housing operating cover is in the open position and cover said guide passage when said housing operating cover is in a closed position; and
a pressing portion formed on said housing operating cover and disposed in such a manner as to be capable of abutting against said terminal portion, said pressing portion being adapted to permit the introduction of the wire along said guide passage onto said terminal portion when said housing operating cover is in the open position and to press and hold the wire against said terminal portion when said housing operating cover is in the closed position.
8. A plug for an electric wire according to Claim 7, wherein said terminal portion has a projecting piece whose one end is supported by said terminal portion, and the wire is pressed by a free end of said projecting piece when said housing operating cover is in the closed position.
9. A plug for an electric wire according to Claim 8, wherein said terminal portion is formed by being turned up at a substantially intermediate portion in a longitudinal direction of said terminal portion, and is provided such that the wire is capable of being inserted between longitudinal opposite end portions of said terminal portion when said housing operating cover is in the open position.
10. A plug for an electric wire according to Claim 9, wherein said projecting piece is provided on one end portion of said terminal portion on a surface thereof opposing another end portion of said terminal portion.
11. A plug for an electric wire according to Claim 7, characterised by further comprising:
an immobilizing device for immobilizing an insulating covering portion of the wire by generating a moving force in a direction in which a diameter of the wire is reduced, by means of an urging force acting in a direction in which the wire is removed from said terminal portion.
12. A plug for an electric wire according to Claim 11, wherein said immobilizing device is constituted by a pair of tightening members which are provided on a fixed cover fixed to said housing base for covering at least a portion of said terminal portion, and are juxtaposed in a direction perpendicular to a direction in which the wire is introduced.
13. A plug for an electric wire according to Claim 11, wherein said immobilizing device is constituted by a pair of clamping members, one of said clamping members being provided on said housing operating cover and another of said clamping members being provided on a fixed cover fixed to said housing base for covering at least a portion of said terminal portion, said pair of clamping members being disposed in such a manner as to oppose each other in a direction perpendicular to a direction in which the wire is introduced.
14. A plug for an electric wire according to Claim 7, characterised by further comprising:
a screw member for fixing said housing operating cover to said housing base so as to prevent said housing operating cover from being swung to the open position when said housing operating cover is in the closed position.
15. A plug for an electric wire according to Claim 7, wherein said housing base is provided with a grip having an irregular surface provided on an outer peripheral portion thereof in such a manner as to extend in a direction perpendicular to a projecting direction of said plug-in pin.
16. A plug for an electric wire according to Claim 7, characterised by further comprising:
a resiliently engaging device disposed between said housing base and said housing operating cover so as to prevent the swinging motion of said housing operating cover from the open position to the closed position.
17. A plug for an electric wire according to Claim 16, wherein said resiliently engaging device is constituted by a stepped portion provided on said housing operating cover and a retaining projection provided on said housing base, said stepped portion and said retaining projection being provided in such a manner as to engage with each other when said housing operating cover is in the closed position.
18. A plug for an electric wire according to Claim 7, wherein said plug-in pin includes a fuse pin, said plug for an electric wire further comprising:
a fuse cover provided on said housing base and disposed in such a manner as to be capable of being opened and closed on a plug-in-pin projecting side of said housing base;
a holding portion for holding a fuse and disposed on a surface of thickness-wise surfaces of said fuse cover so as to project in a direction opposite to a direction in which said plug-in pins project; and
a fuse holder provided on said housing base to resiliently engage and hold the fuse and allow the fuse to be attached and detached from said fuse holder as said fuse cover is opened and closed.
19. A plug for an electric wire according to Claim 7, further comprising:
a fixed cover fixed to said housing base for covering at least a portion of said terminal portion.
20. A plug for an electric wire according to Claim 19, wherein said guide passage is proided on said fixed cover.
21. A plug for an electric wire subtantially as herein
described with reference to and as illustrated in any one
of Figures 1-11 or 13-24 of the accompanying drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23658293 | 1993-09-22 | ||
| JP14205294A JPH07142102A (en) | 1993-09-22 | 1994-06-23 | Plug for electric wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9418815D0 GB9418815D0 (en) | 1994-11-09 |
| GB2282494A true GB2282494A (en) | 1995-04-05 |
Family
ID=26474184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9418815A Withdrawn GB2282494A (en) | 1993-09-22 | 1994-09-19 | Plug for electric wire |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH07142102A (en) |
| GB (1) | GB2282494A (en) |
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| EP0780923A2 (en) * | 1995-12-22 | 1997-06-25 | HAGER ELECTRO GmbH | Clamp for connecting a conductor end with a contact |
| GB2316813A (en) * | 1996-08-27 | 1998-03-04 | Vivienne M Swann | Snap-lock electrical plug |
| GB2314696B (en) * | 1996-06-24 | 2000-06-28 | Whitaker Corp | Connector with wire strain relief means |
| GB2366672A (en) * | 2000-08-22 | 2002-03-13 | Yazaki Corp | Electrical terminal box with cable strain relief. |
| DE10152519A1 (en) * | 2001-10-24 | 2003-05-08 | Wieland Electric Gmbh | Electrical plug-in connector has clamp body protruding from clamp leg towards base leg for clamp contacting conductor between base and clamp legs when closing clamp connector |
| EP1317029A1 (en) * | 2001-11-29 | 2003-06-04 | SMK Corporation | Plug |
| GB2388257A (en) * | 2002-05-02 | 2003-11-05 | Wilfred Raynor Goddard | Electrical plug |
| EP1394901A1 (en) * | 2002-08-30 | 2004-03-03 | SMK Corporation | Plug |
| US6712649B2 (en) | 2000-08-23 | 2004-03-30 | Smk Corporation | Plug |
| EP1445837A1 (en) * | 2003-02-04 | 2004-08-11 | Furutech Co., Ltd. | Power plug |
| GB2427314A (en) * | 2005-06-15 | 2006-12-20 | Stephen Martin | Electrical connector which can be wired externally |
| FR2941569A1 (en) * | 2009-01-28 | 2010-07-30 | Legrand France | ELECTRICAL APPARATUS WITH AUTOMATIC CONNECTION TERMINAL |
| EP2309601A1 (en) * | 2009-10-10 | 2011-04-13 | White Box, Inc. | Electrical connector with cam actuated locking mechanism |
| WO2011151393A1 (en) * | 2010-06-04 | 2011-12-08 | Multi-Holding Ag | Contact element for plug arrangement |
| DE202010016710U1 (en) * | 2010-12-17 | 2012-03-19 | Weidmüller Interface GmbH & Co. KG | Connecting device with movable actuating means |
| GB2552971A (en) * | 2016-08-16 | 2018-02-21 | Sk Wilks Ltd | Electrical connection apparatus and making wiring connections thereto |
| EP3480895A1 (en) * | 2017-11-07 | 2019-05-08 | UNGER Kabel-Konfektionstechnik GmbH | Device connection unit for an electrical device and electrical device |
| WO2023030672A1 (en) * | 2021-09-03 | 2023-03-09 | LANIOL GmbH | Connection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TW201119153A (en) * | 2009-11-18 | 2011-06-01 | Gem Terminal Ind Co Ltd | Plug structure with a fuse post capable of being driven for mounting and dismounting |
| JP5888507B2 (en) * | 2012-06-18 | 2016-03-22 | 東芝ライテック株式会社 | Outlet |
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| US4995830A (en) * | 1984-10-02 | 1991-02-26 | Ira Eckhaus | Electrical wire connectors |
| GB2166912A (en) * | 1984-10-31 | 1986-05-14 | Gordon William Baker | Improvement in electrical plugs |
| US4943246A (en) * | 1987-02-03 | 1990-07-24 | Gilbert Hugh H | Electrical connector for wire connection |
| GB2272334A (en) * | 1992-10-22 | 1994-05-11 | Curtis George S | Wire-clamping terminal of electrical connector |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0780923A3 (en) * | 1995-12-22 | 1998-08-12 | HAGER ELECTRO GmbH | Clamp for connecting a conductor end with a contact |
| EP0780923A2 (en) * | 1995-12-22 | 1997-06-25 | HAGER ELECTRO GmbH | Clamp for connecting a conductor end with a contact |
| GB2314696B (en) * | 1996-06-24 | 2000-06-28 | Whitaker Corp | Connector with wire strain relief means |
| GB2316813A (en) * | 1996-08-27 | 1998-03-04 | Vivienne M Swann | Snap-lock electrical plug |
| GB2366672A (en) * | 2000-08-22 | 2002-03-13 | Yazaki Corp | Electrical terminal box with cable strain relief. |
| US6626696B2 (en) | 2000-08-22 | 2003-09-30 | Yazaki Corporation | Electric wire holding structure for connection box |
| GB2366672B (en) * | 2000-08-22 | 2004-06-02 | Yazaki Corp | Electric wire holding structure for connection box |
| US6712649B2 (en) | 2000-08-23 | 2004-03-30 | Smk Corporation | Plug |
| DE10152519A1 (en) * | 2001-10-24 | 2003-05-08 | Wieland Electric Gmbh | Electrical plug-in connector has clamp body protruding from clamp leg towards base leg for clamp contacting conductor between base and clamp legs when closing clamp connector |
| EP1317029A1 (en) * | 2001-11-29 | 2003-06-04 | SMK Corporation | Plug |
| GB2388257A (en) * | 2002-05-02 | 2003-11-05 | Wilfred Raynor Goddard | Electrical plug |
| GB2388257B (en) * | 2002-05-02 | 2005-05-25 | Wilfred Raynor Goddard | Electric plug |
| EP1394901A1 (en) * | 2002-08-30 | 2004-03-03 | SMK Corporation | Plug |
| EP1445837A1 (en) * | 2003-02-04 | 2004-08-11 | Furutech Co., Ltd. | Power plug |
| GB2427314A (en) * | 2005-06-15 | 2006-12-20 | Stephen Martin | Electrical connector which can be wired externally |
| FR2941569A1 (en) * | 2009-01-28 | 2010-07-30 | Legrand France | ELECTRICAL APPARATUS WITH AUTOMATIC CONNECTION TERMINAL |
| WO2010086527A1 (en) * | 2009-01-28 | 2010-08-05 | Legrand France | Electric apparatus with an automatic connection terminal |
| EP2309601A1 (en) * | 2009-10-10 | 2011-04-13 | White Box, Inc. | Electrical connector with cam actuated locking mechanism |
| WO2011151393A1 (en) * | 2010-06-04 | 2011-12-08 | Multi-Holding Ag | Contact element for plug arrangement |
| DE202010016710U1 (en) * | 2010-12-17 | 2012-03-19 | Weidmüller Interface GmbH & Co. KG | Connecting device with movable actuating means |
| WO2012080083A1 (en) * | 2010-12-17 | 2012-06-21 | Weidmüller Interface GmbH & Co. KG | Connection apparatus having a moving operating means |
| GB2552971A (en) * | 2016-08-16 | 2018-02-21 | Sk Wilks Ltd | Electrical connection apparatus and making wiring connections thereto |
| EP3480895A1 (en) * | 2017-11-07 | 2019-05-08 | UNGER Kabel-Konfektionstechnik GmbH | Device connection unit for an electrical device and electrical device |
| EP3480895B1 (en) | 2017-11-07 | 2021-11-10 | UNGER Kabel-Konfektionstechnik GmbH | Device connection unit for an electrical device and electrical device |
| WO2023030672A1 (en) * | 2021-09-03 | 2023-03-09 | LANIOL GmbH | Connection device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9418815D0 (en) | 1994-11-09 |
| JPH07142102A (en) | 1995-06-02 |
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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) |