CONNECTOR THAT WORKS WITH A TURN MOVEMENT FOR ELECTRIC PLUG AND WALL PLUG
Field of the Invention The present invention relates to fastening or locking devices for electrical connectors, and more particularly, refers to a connector assembly that engages with a rotating movement that maintains the clutch between a clutched electric plug and a Wall plug. BACKGROUND OF THE INVENTION [0002] When using electric motor driven appliances or power tools, it is necessary to maintain a firm clutch between a clutched electric plug and an electrical outlet or power line accessory in order to guarantee an uninterrupted source of power to the apparatus. or electric tool. Unintentional unplugging of a clutch cord from an electrical outlet can cause frustration and contribute to a decrease in productivity. For example, most people have experienced the common frustration of having the power cord of a vacuum cleaner disconnected in an unintentional manner from the wall outlet several times while vacuuming dust. As a further example, a computer plug that is disconnected from its connection in a wall outlet may cause loss of power.
RSF. 155965 data. As another example, on-site construction workers experience production losses each time they must reconnect the power tool that is disconnected from the wall outlet or power duct fitting during use. Several techniques and devices have been proposed to guarantee the clutch between a clutch electric plug and an electrical outlet or power line accessory. For example, in accordance with a prior art technique, the electric plug is provided with a metal ring or fork tongue tab, which is designed to be fixed by a screw in the central hole of the cover plate of the electrical output. A disadvantage with this technique is that the central screw of the cover plate is loosened each time the electric plug is to be engaged or disengaged from the wall socket. In this way, this technique is extremely impractical for uses in which the electric plug will only be engaged for short periods of time, as is the case with the use of vacuum vacuum cleaners, gardening tools, power tools, etc. In addition, this technique requires the use of a screwdriver each time the electric plug is to be immobilized in the clutch and each time it is to be disengaged from the clutch with the wall plug. Still further, in the case where the electric plug to be engaged is a three-pin plug, the presence of the third "grounding" terminal of the three-pin plug means that the plug can only be inserted. in the wall socket in one orientation. Because there is normally only one central screw hole located between two plug access holes in the cover plate, only one electrical plug, having the metal ring or the fork tab, could be screwed in place in the wall socket at the same time. Accordingly, a connector arrangement that can secure an electric plug in a wall socket without requiring the use of additional tools to make the locking connection and that can engage, in the form of locking or locking, more than one electrical plug in the respective plug portions of an electrical outlet at a time would be a breakthrough in the art. In the case of electrical conduit boxes or accessories exposed at the outlet, of the type commonly found on boat docks, the common practice is to use leather strings, chain or even tape to ensure that a clutch electric plug can remain connected with the plug portion of the outlet duct fitting. It is also common practice to bend or deform the conductor terminals of an electric plug to create a stronger mount inside the outlet. Obviously, these practices are only temporary fixes and do not provide a secure long-life clutch between and the electric clutch engaged and an electrical outlet. The prior approach that solves this problem is described in U.S. Patent No. 5,344,333. This approach proposes the use of a cylindrical sleeve capable of being rotated to effect locking with a rotating movement of an electrical plug clutched with a cover plate of an electrical outlet. In this design, the cylindrical sleeve is provided with a first end adapted for insertion of the snap-in assembly into a plug hole of the cover plate and a second end provided with slots along an inside cylindrical surface thereof. . The electric plug is provided with a circular face plate having threads formed along its outer surface. In use, the plug is engaged within the socket and the sleeve is rotated, so that the grooves of the sleeve engage in a locking manner with the threads of the face plate on the electric plug. While the above design works well and offers many advantages with respect to the prior art techniques discussed above, there is still a problem because garbage and debris tend to collect in the sleeve over time and this can impede a direct immobilization or locking clutch. Likewise, in the previous design, both hands are required to complete the locking clutch between the electric plug engaged and the socket. Accordingly, a connector arrangement that locks with a turning movement that overcomes these problems would be extremely desirable. SUMMARY OF THE INVENTION Therefore, a main objective of the present invention is to provide a simple connector assembly that locks with a low-cost turning movement that secures an electric plug engaged with an electrical outlet or power conduit fitting. A related object of the invention is to provide a connector assembly that locks with a rotating movement of the type described herein, which allows convenient operation of one-handed locking and which does not require any type of tools to effect the operation of immobilization or lock. Briefly, according to a preferred embodiment, the connector assembly engaging a turning movement comprises two main components including a cylindrical sleeve capable of being rotated in the axial direction enclosing the insulating body portion of an electrical plug and a modified cover plate that replaces the conventional cover plate that covers the metal electrical conduit fitting of a wall socket. The cylindrical sleeve has a first sleeve end which extends a distance beyond the insulating body portion of the electric plug in the direction of the protruding electrical conductors or terminals and a second sleeve end which is rotatably mounted in the the insulating body portion of the electric plug. In use, the cylindrical sleeve is capable of being rotated freely around the long axis of the electric plug. The first sleeve end includes a plurality of protrusions protruding inwardly in the radial direction, which are provided along an inner cylindrical surface thereof. The modified cover plate is similar in design to a conventional cover plate, except that it includes a vertical cylindrical wall located around a periphery of each plug access hole. Each of the vertical cylindrical walls is provided with a plurality of spaced apart discontinuous thread members, which are formed along their respective outer wall surfaces. The diameter of each vertical cylindrical wall is dimensioned in order to provide a high precision tolerance assembly within the first sleeve end of the cylindrical sleeve. Likewise, the threaded members on the outer wall surfaces are designed to engage in engagement with the protuberances on the inner cylindrical surface of the first sleeve end as the sleeve is rotated with a rotational movement with respect to the vertical cylindrical wall. In use, the electric plug is inserted into the plug portion of the socket and the cylindrical sleeve is turned about a quarter turn. This causes the protuberances located on the inner part of the sleeve to engage in a locking manner with the threads located on the outside of the vertical cylindrical wall of the cover plate. Therefore, it is prevented that the electric plug is accidentally disconnected from the outlet by its connection with the second sleeve end of the cylindrical sleeve. An advantage of the present invention with respect to the lock connector designs with a prior art slot thread rotation movement is that the use of protrusions protruding on the sleeve instead of the receiving slots eliminates Substantially, the aforementioned problem of garbage and debris collection in the sleeve and prevents the direct clutch from locking with a turning movement of the locking or locking structure.
The position of the sleeve capable of being rotated on the electric plug also advantageously facilitates the locking operation with a turning movement with a single hand of a user. In an alternate embodiment of the invention, the connector assembly that engages a pivoting movement comprises three components: namely, a cover plate that is joined with a wall socket, a shortened cylindrical sleeve and an adapter or face plate which joins with or forms an integral part of the end of the terminal of the electric plug. The shortened cylindrical sleeve includes a first sleeve end adapted for insertion of a snap-fit assembly into the plug access ports of the cover plate and a second sleeve end having a plurality of spaced apart protuberances located along a sleeve. cylindrical surface inside it. Once it is snapped into place on the cover plate, the shortened cylindrical sleeve is allowed to rotate in the axial direction with respect to the cover plate. The face plate on the end of the terminal of the electric plug is provided with a plurality of external threads. In use, the electric plug is connected to the plug portion of the socket and the shortened cylindrical sleeve is rotated so that the protuberances located internally on the second inner cylindrical surface of the sleeve clutch in a locking manner with the threads external on the face plate of the electric plug. In yet another embodiment of the invention, the connector assembly that engages a pivoting movement includes a rotatable sleeve housing that encloses the electrical plug. The sleeve that can be rotated includes external threads formed along a front end portion thereof. The connector assembly that locks with a pivoting movement also includes a modified wall socket cover plate having plug receiving holes provided with separate protrusions protruding inwardly, which are integrally formed along a cylindrical wall. interior that surrounds each of the plug reception holes. In use, the terminals of the conductor of the electric plug are inserted in the corresponding receiving holes of the wall socket and the sleeve is rotated, whereby the external threads of the sleeve capable of being turned are clutched in a locking manner with the protuberances of the cover plate. In still another embodiment of the invention, the connector assembly that engages with a rotating movement is adapted to maintain the clutch of an electrical plug with a female plug end of an extension cord. This embodiment is directed directly and specifically to maintain the clutch between extension cords and power tools and / or apparatuses having a male electrical connector or terminal end that can be joined by a flexible connection portion, or is formed integral with, the handle structure of a tool or electrical appliance. For example, these connectors are commonly found in most outdoor gardening tools, such as leaf blowers and vacuum cleaners, hedge trimmers, etc. In this embodiment, the male or terminal end of the electrical connector in the flexible connection or in the handle is provided with a face plate member having a cylindrical outer wall with a plurality of threads formed therein. As before, the female or plug end of the connector assembly is provided with a rotatable and retractable pivoting movement sleeve, which has the inward protruding protrusions integrally formed along the portion more front of the inner sleeve wall. In use, the conductor terminals of the electric plug, they are introduced into the corresponding receiving holes of the socket portion and the sleeve is rotated, whereby the protrusions protruding into the sleeve capable of being rotated are caused to engage in a locking manner with the threads on the member of the cover plate. The cover plate member could be integrally formed with the male portion of the insulating body that could be provided as a part of the market. Another advantage provided by the present invention is the extended operating life and the reliability of the electrical contact components of the electrical plug and the plug assemblies because the locking feature with a rotational movement of the connector assembly substantially reduces the Tension forces on the electric plug and with that, prevents the excess wear of the electrical contact surfaces of the female plug and the assemblies of the male electric plug. The methods and apparatuses that incorporate the features described above and that are effective to operate as described, are specific objectives of this invention. Other additional objects and objects of the present invention will be apparent from the following description and claims and are illustrated in the accompanying figures, which by means of the illustration show the preferred embodiments of the present invention and the principles of the invention. and that are now considered to be the best ways contemplated to apply these principles. Other embodiments of the invention include similar or equivalent principles that could be used and structural changes may be made as desired by those skilled in the art without departing from the present invention and the substance and scope of the appended claims. BRIEF DESCRIPTION OF THE FIGURES The accompanying figures that are incorporated and form part of the specification, illustrate various aspects of the present invention and together with the description serve to explain the principles of the invention. Figure 1 is an isometric perspective view of a connector assembly that engages a pivoting movement in accordance with an embodiment of the present invention and showing an electrical plug in a locking clutch or latching with a wall socket. Figure 2 is an isometric perspective view similar to that shown in Figure 1, although it has the electrical plug disconnected from the wall socket. Figure 3 is a cross-sectional side elevational view of the connector assembly engaging a pivoting movement of Figure 2. Figure 4 is an isometric perspective view of the connector assembly that engages a rotational movement of according to a second embodiment of the present invention and showing an electrical plug in a locking clutch or locking with a wall socket. Figure 5 is an isometric perspective view of a second embodiment of the present invention similar to Figure 4 although it shows the electrical plug disconnected from the wall socket. Figure 6 is a front elevational view of a wall socket cover plate constructed in accordance with a second embodiment of the present invention. Figure 7 is an isometric perspective view of a connector assembly that engages a pivoting movement that maintains the clutch between a clutched electrical plug and a wall plug according to a third embodiment of the present invention. Figure 8 is a cross-sectional view through the mounting of the wall socket plate and a sleeve capable of being rotated, taken along the line and in the direction of the arrows 8-8 of Figure 7. Figures 9 and 10 show a series of front views illustrating the retracted open position (Figure 9) and the closed position (Figure 10) of a wall plug cover plate assembly according to another embodiment of the invention. Figure 11 is a sectional view through the mounting of the cover plate of the wall socket, taken along the line and in the direction of the arrows 11-11 of Figure 10. Figure 12 is an isometric perspective view of a connector assembly that engages with a rotating movement that maintains the clutch between a clutch electrical plug and a plug portion of an electrical extension cord according to a fourth embodiment of the present invention. Figure 13 is an exploded view in isometric cross-section through the housing assembly of the socket connector, taken along the line and in the direction of the arrows 13-13 of Figure 12. Figure 14 is a side elevational view of the electrical connector assembly that locks in a pivoting movement shown in Figure 12 having, in cross section, the connecting structure that locks with a pivoting movement provided in the female and male pin assemblies . Figure 14A is a fragmentary detailed view of the region enclosed by arrows 14A-14A of Figure 14. Figure 15 is a side elevational view of the connecting structure that locks in a pivoting movement for male and female assemblies. female of the electric plug and showing the conical conforming regions in the clutch regions to provide a compression assembly. Figure 16 is a partial cross-sectional view through an electrical connector or terminal end of a handle or flexible connection portion of a garden tool according to the prior art. Figure 17 is an isometric perspective view in partial section of a connector assembly engaging a pivoting movement that maintains the clutch between an electrical plug and a plug portion of an electric extension cord according to a fifth embodiment of the present invention. Figure 18 is a cross-sectional side elevational view of the electrical connector assembly engaging a pivoting movement of Figure 17. Figure 19 is a cross-sectional view through the terminal end of the connector assembly, taken along the line and in the directions of arrows 19-19 of Figure 18. Figure 20 is a detailed sectional view of the region enclosed by arrows 20-20 in Figure 19. Next, will refer in detail to the various current preferred embodiments of the invention, examples of which are illustrated in the accompanying Figures.
Detailed Description of the Invention A connector assembly that locks with a rotating movement, which is used to hold the clutch between and a clutched electrical plug and a wall plug constructed in accordance with one embodiment of the present invention, is designated, generally, by reference number 10 in Figures 1-3. The connector assembly that engages a rotating movement 10 includes a generally cylindrical sleeve 12, which encloses the insulating body portion 14 of the electric plug 16. As best seen in Figure 3, the sleeve 12 includes a first end of sleeve 13, which extends in a forward direction a distance beyond the insulating body portion 14, so as to partially enclose the electrical conductors or terminals (shown in dotted lines) of the electrical plug 16. The first The sleeve end 13 has an inner cylindrical surface provided with a plurality of uniformly spaced protuberances 15. The sleeve 12 also includes a second sleeve end 17 having pivotable mounting means that rotatably assemble the sleeve 12 in the electric plug 16, so that the sleeve 12 is able to rotate freely in the axial direction to the of the long shaft of the electric plug 16, as indicated by the directional arrow A. The pivotable mounting means also serve to attach or lock the sleeve 12 to the electric plug 16 in a way that keeps the sleeve 12 in place. a preferred axial relationship with the insulating body portion 14 as shown. In a preferred embodiment, the mounting means capable of being rotated include a notched keyway 18 located at the rearmost end of the sleeve 12. The keyway 18 is adapted to be received, in a sliding manner, within an annular gap or gap. provided in the electric plug 16. In this example, the gap 20 is formed by the presence of the insulating body portion 14 on one side and a fixed conical housing portion 22 on the other side. Of course, there are many other possible alternative structural arrangements for the rotatable mounting of the sleeve on the electric plug in a manner that maintains the sleeve in a desired axial relationship with the electric plug (i.e., wherein the first sleeve end 13). with the protuberances 15 being located just forward of the insulating body portion 14 of the electric plug 16). For example, the tapered end portion 22 may be integrally formed with the cylindrical sleeve 12 (in this case, the tapered end portion would not be fixed or held by screws in the electrical plug 16). The conical end of the conical end portion of this modified sleeve would include a hole for receiving the power cord from the electric plug. An additional positioner, such as a ring or similar member (not shown) could be installed on the power cord to restrict the backward displacement of the conical end portion relative to the electrical plug 16 and thus maintain the sleeve in a desired axial relationship with the electric plug. The connector assembly that locks with a rotating movement 10 also includes a modified cover plate 30, which replaces the conventional cover plate of a wall socket. Preferably, the modified cover plate 30 includes a central hole 32 for receiving a fixing screw (not shown securing the cover plate 30 in the conventional position of the central screw of the wall socket. Figures 2 and 3. Alternately, as shown in Figure 1, the cover plate could include the upper and lower screw holes 34 (shown in dashed lines) to effect the attachment of the cover plate 30 with the upper and lower screw assemblies of the metal conduit fitting housing the electrical plug portions 35 of the wall plug The cover plate 30 is provided with plug access holes 36, which are formed with a surrounding vertical perimeter wall 38. Each wall 38 defines a cylindrical hole having a diameter sized to effect high precision tolerance assembly within the cylindrical bore of the first sleeve end 13. The outer surface of the wall 38 includes a plurality of external threads 40, which in use, engage with the protuberances 15 of the first sleeve end 13 as the electric plug is inserted into the plug portion 35 and the sleeve 12 is rotated in an immobilization or lock In this way, the rotatable sleeve 12 is locked with a rotary movement on the slotted vertical cylindrical wall 38 of the cover plate 30 and therefore provides a direct clutch lock between the clutch electrical plug 16 and the portion of plug 35 of the wall socket. To disengage the electrical plug of the wall plug, the sleeve 12 is simply rotated in a reverse orientation, which in turn, releases the protrusions 15 of the locking clutch with the external threads 40 of the vertical cylindrical wall 38 of the plate. cover 30. In a preferred embodiment of the invention, there are four protuberances 15 and there are four discontinuous threads 40, which are located in a conventional four-point thread configuration (4) of the cross-wire type. This simple arrangement allows the locking and unlocking operation to be carried out with a turning movement only with a quarter turn of the sleeve in any required direction. A larger number of threads and protuberances could be used if desired. A connector assembly that engages a rotational movement, which is constructed in accordance with a second embodiment of the present invention, is designated, generally, by the reference number 50 in Figures 4 7 5. The connector assembly which engages with a turning movement 50 includes: a face plate 52 attached or integrally formed with a terminal end of an electrical plug 16; a modified cover plate 56 that replaces the conventional cover plate of a wall socket or electrical power line fitting; and a cylindrical sleeve 54 which rotatably secures the face plate 52 in the cover plate 56. The sleeve 54 is a modified and shortened version of the sleeve 13 of the embodiment described above with reference to Figures 1-3 and which it includes a first sleeve end having shoulder segments 58 adapted for insertion of the snap-in assembly into the plug access holes 60 of the cover plate 56. Preferably, each of the plug access holes 60 they include at least one ear or inwardly extending barrier member 62, which in use, bears against the axial barriers or stops 64 provided on the first sleeve end to limit the axial rotation range of the sleeve 54 within the holes of the sleeve. plug port 60. This feature will be discussed in more detail below with reference to Figure 6. The sleeve 54 also includes a second sleeve end which It has an inner cylindrical surface formed with a plurality of spaced protuberances 66. The inner cylindrical surface of the second sleeve end is dimensioned to effect a high precision tolerance assembly on the face plate 52 of the electrical plug 16. Based on the clutch of the conductive elements 68 (shown in dotted lines) of the electric plug 16 by means of the corresponding receiving grooves of the plug portion 35 of the wall socket, the sleeve is rotated with a turning movement as indicated by the arrow A in Figure 4. This causes the protrusions 66 to clutch in a locking manner with the external threads 70 provided in the face plate 52, whereby the electrical plug 16 is immobilized or locked in the cover plate 56. Preferably, the sleeve that can be rotated 54 includes the finger lugs 72 to facilitate the locking operation with a turning movement by means of a u suary
Next, with reference to Figure 6, the two finger ears 72 in each of the sleeves 54 are preferably oriented diagonally opposite each other, so that they are approximately in the two and eight o'clock positions. of the plug access holes when the sleeve 54 is in the unlocked position. When the sleeve is rotated to the locking position, the finger ears 72 move approximately to the four and ten o'clock positions, respectively. A larger or smaller range of axial rotation of the sleeve 54 within each of the plug access holes 60 can be made by adjusting the positioning of the axial stops 64 of the first sleeve end bearing against the ear 62 in fully locked and unhooked from the sleeve that can be rotated. The positioning of the axial stops 64 with respect to the finger ears 72 of each sleeve is also selected to ensure that the finger ears of the upper and lower sleeve do not overlap and interfere with each other. A connector assembly that engages a pivoting movement that maintains the clutch between a clutch electrical plug and a wall plug, constructed in accordance with a third embodiment of the present invention, is designated, generally, by reference number. 80 in Figures 7-8.
The connector assembly engaging a pivoting movement 80 includes a wall socket cover plate 82 that replaces the conical cover plate of a wall socket or electrical power line fitting. The cover plate includes the holes 84 dimensioned and positioned so as to allow connection access by an electrical male plug assembly 16 to the wall socket portions 86 of the power outlet. Each orifice 84 has an inner cylindrical wall provided with a plurality of spaced protrusions protruding inwardly in the radial direction, and four protrusions being separated at regular intervals. The depth of the inner cylindrical wall of each orifice 84 is sufficient to allow the total engagement clutch with a turning movement with the external threads of the rotatable sleeve member that is provided in the male electrical connector assembly (further described ahead) . The connector assembly that locks with a rotary movement 80 further includes a rotatable cylindrical sleeve 90 that encloses the insulating body portion 14 of the male electrical plug assembly 16. The axial rotation of the sleeve 90 about a long axis of the electric plug 16 is as indicated by the directional arrow A. The sleeve 90 is provided with a plurality of external threads 92 at a first forward end thereof.
The threads 94 are configured in size and number to facilitate the locking cooperation clutch with a turning movement with the protuberances 88 of the access holes 84 of the wall socket cover plate 82. The sleeve 90 also includes the means to retain the clutch capable of being rotated with the male plug assembly 16. In the example embodiment shown, the retaining means includes a notched keyway 94 located at a second rear end of the sleeve 90. Just like the embodiment described in advance with reference to Figure 3, the notched keyway 94 is adapted to be rotatably secured within an annular groove or gap 20, which is formed in the insulating body portion 14 of the electrical plug assembly 16. The same so that previously, the electric plug assembly could include a fixed portion of tapered housing 22 in order to complete the outer conical appearance cos mystically pleasing electrical plug assembly 16. Likewise, in the preferred embodiment of the invention, there are four protuberances 88 and there are four discontinuous threads 92, which are placed in a four-point thread configuration (4) of the reticule thread type. This simple arrangement allows the locking and unlocking operation with a turning movement only about a quarter turn of the sleeve in any required direction. A larger number of threads and protuberances could be used if desired. The wall socket cover plate 82 of the present invention is intended for a permanent replacement of conventional wall socket cover plates currently in use at home or in business. It is recognized that users will continue to use the power socket to connect conventional electric plugs (ie, those plugs not provided with the locking clutch structure with a rotating movement) in addition to the electrical plugs provided with the connecting structure with a specially configured turning movement of the present invention. It is also recognized that inward protruding protuberances 88, which are provided in the holes 84 of the cover plate 82, could prevent proper plug-in clutch engagement with certain large diameter male pin configurations in use today. With reference to Figures 10-11, this possible problem is overcome by designing the cover plate 82 as a cover plate assembly capable of being retracted including the portions of the outer cover plate capable of being retracted 96a, 96b and the inner cover plate 98. The protuberances 88 are formed along the inner cylindrical wall of the holes 84 of the outer cover plate portions 96a, 98b. The holes and access thicknesses of the inner cover plate 98 are the same as a conventional cover plate, so that they are fully compatible in connection with the conventional electrical plug configurations. The inner cover plate 98 is secured to the wall socket 99 by a central screw holder 99 in the conventional manner (see Figure 11). Suitable sliding means capable of being retracted from groove tongue are provided on the mating surfaces of the inner cover plate 98 and the outer cover plate portions 96a, 96b (for example, the tongue 100 on the cover plate). interior 98 and groove 102 in the outer cover plate portions 96a, 96b) to facilitate movement of the outer cover plate portions out of position so as to expose the inner cover plate. The retraction feature described above of the outer cover plate portions allows any conventional plug access without obstruction of the electrical plug in the wall socket. The detents or protuberances 104 and the conformation receiving indentations 106 could be provided on the respective groove surfaces 102 and tab 100 to lock the outer cover plate portions 96a, 96b in any of the fully retracted, open positions (FIG. ) or closed (Figure 10). The outer cover plate portions 9Sa, 96b could further include scoring or ribbing edge regions 108 to facilitate handling by a user when moving the outer cover plate portions 96a, 96b in or out of position. It is understood that the modality described above for the retracted assembly and cover plate capable of being locked with a turning movement have the ability to vary and modify, while still achieving the basic objective of moving the portion or portions of plate outside the path to allow access to the unobstructed plug by a conventional electrical plug in the direction below the plug portion. For example, the outer plate portions of the cover plate assembly could be rotatably joined to the inner plate by either a suitable hinge or other conventional turning structure. In addition, the cover plate portions could be configured as a single outer plate member that is rotatably attached, rotatably or otherwise removably attached (eg, by a pressure mount connection). ) with the inner plate portion.
Referring to Figures 12-13, there is shown a connector assembly that locks with a rotating movement, which maintains the clutch between a clutched electric plug and a plug portion of an electric extension cord according to a fourth embodiment of the present invention. In this embodiment, the insulating body portion 14 of the male electrical plug assembly 16 is provided with the same locking connection structure with a rotating movement as described above in connection with the embodiment shown in FIGS. 7 and 7. 8. That is, the insulating body portion 14 is enclosed by the sleeve capable of being rotated 90 with the external threads 92 located at the front or end end of the electrical plug assembly 16. The socket 110 is enclosed by a sleeve capable of being retracted 112 and a fixed conical end housing 114. The retractable sleeve 112 is retracted with the socket 110 allowing a desired amount of translation movement of the sleeve 112 between a first fully retracted position, wherein a front end 112a of the sleeve 112 is situated substantially flush with the front face 110a of the socket 110 and a second extended position, wherein the forward end 112b of the sleeve 112 extends a distance beyond the front face 110a of the socket 110. This range of translation movement is indicated by the directional arrow B in Figure 12. The forward end 112a of the sleeve 112 is provided with a plurality of spaced apart protrusions projecting inwardly in the radial direction 116. As best seen in Figure 13, the lower part of the sleeve 112 includes one or more ear members 112 that move. In the corresponding grooves 110b, which are provided on the outer surface of the socket 110. Alternatively, the ear member 112b could be configured as a single annular protrusion and the groove could be configured as a single annular groove. In this case, the sleeve capable of being retracted 112 would also be allowed to rotate in axial direction around a socket 110. The dimensions of the ear and the groove are configured to provide a desired range of translational movement at the end. front 112a of the sleeve 112 beyond the face 110a of the socket 110. Also, as an option, the sleeve capable of being retracted 112 could be biased towards a position normally extended by a spring 118. In operation, the clutch engaging with A turning movement of the male electric plug in the socket is effected as follows. First, the conductor terminals of the male plug assembly 16 are inserted into the corresponding receptacle holes of the socket 110. Then, the sleeve 112 is moved to its extended position (if it were already deflected towards the extended position by the spring 118) so that the protuberances 116 extend beyond the front face 110a of the socket a sufficient distance in order to provide a full clutch with the threads 92 of the rotatable sleeve 90 of the male electrical plug assembly 16. Next, the user simply rotates the sleeve 90 in a tightening direction (ie, clockwise for the right hand thread, counterclockwise for a left hand thread). The tightening rotation of the sleeve 90 penetrates the threads 92 in clutch with the protuberances 116, which pulls the conductor terminals of the male electric plug 16 the remaining distance towards the corresponding receiving holes of the female plug 110. To disengage the electric pin male 16 female plug 110, the rotation of the sleeve that can be rotated 90 is inverted, so that the threads 92 disengage from the protuberances 116. As best seen in Figures 14 and 14A, either or both of the front and rear ends of the sleeve can be rotated 90 and the sleeve capable of being retracted 112 can be tapered and progressively varied in size to provide a seal against dust, moisture and similar contaminants. This "dust seal" can also be provided for any or all of the previously described modes. With reference to Figure 15, the respective clutch surfaces at the forward ends of the sleeve capable of being rotated 90 and the sleeve capable of being retracted can be conical, in a shaped manner, to provide a desired compression assembly based on the clutch of It locks with a turning movement. In the example shown, the inner cylindrical receiving wall 120 at the front end 112a of the sleeve capable of being retracted 112 and the outer cylindrical wall 122 at the threaded end 92 of the sleeve 90 capable of being rotated are frustoconical in a coupled manner. The inner cylindrical wall surrounding each access hole 84 of the face plate 82 of the embodiments shown in Figures 7-11 can also be tapered, in a progressively varied manner, to provide a desired compression assembly with an electrical plug that It has the locking clutch structure with a properly configured turning movement. Figure 16 shows the recessed terminal end 130 which is commonly found in the handle or in the flexible extension portions of the exterior garden tools. The male insulator body portion 132 is contained in the housing 134 which is either integrally formed with the handle for the garden tool or is provided as a short flexible connection portion which is connected with the handle of the garden tool. The terminals 136 (only two terminals or a third terminal connected to ground can be included) are retracted within a recessed area 138 of the housing 134. In use, the plug portion of an electrical cord (not shown) is received within the recessed area 138 for capturing the clutch with terminals 136. Figure 17 shows an adaptation of the present invention to realize the locking clutch with a turning movement with the flexible connecting end of a garden tool according to a fifth embodiment of the present invention. In this embodiment, the insulating body portion of the male electrical plug assembly 216 is provided with a face plate member 218 having a plurality of threads 292 formed along an outer cylindrical wall of the face plate member 218. Preferably, the threads 292 comprise four or five discrete thread members similar to those shown in the previous embodiments. In this embodiment, the face plate member 218 is connected to the male insulator body and can be fixed, removably, with the same by screws, or similar mechanical fasteners, or it could be integrally formed with the male insulator body or it could be be integrally formed with the housing 222 that encloses the male insulator body. At this point, the male electrical plug assembly 216 is included as a recessed connection that is formed as part of a flexible connection connector end or a handle portion of a conventional outdoor garden power tool. The housing 224 of the flexible connection connector or exterior garden tool handle structure extends around the face plate member 218 and the terminals or conductors 236 and is dimensioned sufficiently large in diameter to enclose the front edge portion of the sleeve capable of being rotated and retracted 112. Just as described above in connection with the embodiment shown in Figures 12-13, the socket 210 is enclosed by a sleeve 212 and a fixed conical end housing 214. The sleeve 212 is retracted with the socket 210 allowing a desired amount of translation movement (indicated by arrow B) sleeve 212 between a fully retracted first position wherein a front end 212a of the sleeve 212 is situated substantially flush with the front face 210a of the socket 210 and a second extended position, wherein the front end 212b of the sleeve 212 extends a distance beyond the front face 210a of the female plug 210. The lower sleeve part 212 includes the radially extending inwardly extending ear members 212b, which are received within the corresponding annular groove 210b provided in the outer surface of the sleeve 210a. 210 female plug. Alternatively, the 212b ear members could be configured as an anvil protrusion. the only one In this case, the retractable sleeve 212 is also allowed to rotate in the axial direction around the socket 210 as indicated by the directional arrow A. The dimensions of the ear (or single protrusion) and groove are configured to providing a desired range of translation movement at the front end 212a of the sleeve 212 beyond the face 210a of the socket 210. The front end 212a of the sleeve 212 is provided with a plurality of spaced protrusions protruding inwardly in the radial direction 216 In operation, the locking clutch with a turning movement of the male electric plug in the socket is made as follows. First, the conductor terminals 236 of the male electrical plug assembly 216 are inserted into the corresponding receptacle holes of the socket 210. Next, the sleeve capable of being moved and rotated 212 is moved towards its extended position, so that the protuberances 216 extend beyond the front face 210a of the socket a sufficient distance to provide the full clutch with the threads 292 of the face plate member 218 at the front end of the male electrical plug assembly 216. A Then, the user simply rotates the sleeve 212 in a tightening direction (eg, clockwise for the right hand string, counterclockwise for the left hand string). The sleeve tightening rotation 212 rotates the protrusions 216 in clutch with the threads 292, which pulls the conductor protrusions 236 of the male electrical plug 216 the remaining distance towards the corresponding receiving holes of the socket 210. In order to disengage the male electric plug 216 from the socket 210, the rotation of the rotatable sleeve 212 is inverted, so that the threads 292 are disengaged from the protuberances 216. Preferably, the sleeve 212 retracts a sufficient distance out of the way allowing the use of conventional plug connectors of larger size than normal. The connection structure of the modalities shown in Figures 17 and 18 could be modified as desired to include conical dust seals of Figures 14-14A and the coupling of the frusto-mechanical compression mounting structure of Figure 15 below , with reference to Figures 19-20, the outer perimeter surface of face plate 218 is preferred to include one or more valleys or depressions 294 formed therein. The depressions 294 are configured to receive, in coupled form, a respective protrusion of projecting protuberances 216 of the female sleeve 212 as the sleeve is rotated to engage with the threads 292. The depressions 294 are located relative to the threaded members 292 to define the end of the locking clutch with a rotating movement between the sleeve 212 and the face plate member 218. In this way, the user can easily determine by perception, if there is a locking clutch so that an over tightening of the connector assembly can be avoided. While the preferred embodiments of the invention have been illustrated and described, it is understood that they are capable of variation and modification and therefore, it is not desired to limit the precise details indicated, although it is desired that they help themselves from the changes and alterations that fall within the substance and scope of the following claims. It is noted that in relation to this date the best method known by the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.