Plug-in type of safety wall switch and wall outlet
First Claim
Patent Images
1. A wall switch device comprising:
- a power outlet assembly including a panel and a base plate being fixedly attached together and a switch niche assembly installed behind said base plate to be fixedly attached to a wall box on the wall;
a plug-in switch unit insertably positioned in said switch niche assembly, said plug-in switch unit having a portion supportably interacting with said panel and base plate; and
control means slidably positioned between said panel and said base plate adapted for releasably controlling said plug-in switch unit to be removed from said switch niche assembly,said plug-in switch unit includes a top cover for housing a switch button, a base having a bottom portion, said base adapted for installing a spring contact assembly, said base having a rectangular configuration and tapering off towards its bottom portion and having four salient lugs extending upward from edges of the bottom portion of said base toward a portion of said top cover at a given angle so as to acquire the inward and outward elasticity, said top cover having four channels on its two opposite outsides engaging with said four salient lugs in a dovetail manner so that said salient lugs can be completely tucked into said channels upon inserting said plug-in switch unit into said switch niche and spring out to be caught and fastened under said panel when said plug-in switch unit has been inserted therein.
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Abstract
A wall switch and a wall outlet each comprises a plug-in unit to be inserted in a niche installed on a base which also includes a panel and a base plate bing fixed together. Between the panel and the base plate, a control frame and a movable latch are sandwiched, and each of them has a projected end extending out of the apertures in the panel so as to facilitate manual operation for removing the plug-in unit. In addition, a thumbtack pin may be furnished at the back of the base plate, penetrating through the base plate and the movable latch so as to prevent the plug-in unit from being removed directly.
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Citations
14 Claims
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1. A wall switch device comprising:
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a power outlet assembly including a panel and a base plate being fixedly attached together and a switch niche assembly installed behind said base plate to be fixedly attached to a wall box on the wall; a plug-in switch unit insertably positioned in said switch niche assembly, said plug-in switch unit having a portion supportably interacting with said panel and base plate; and control means slidably positioned between said panel and said base plate adapted for releasably controlling said plug-in switch unit to be removed from said switch niche assembly, said plug-in switch unit includes a top cover for housing a switch button, a base having a bottom portion, said base adapted for installing a spring contact assembly, said base having a rectangular configuration and tapering off towards its bottom portion and having four salient lugs extending upward from edges of the bottom portion of said base toward a portion of said top cover at a given angle so as to acquire the inward and outward elasticity, said top cover having four channels on its two opposite outsides engaging with said four salient lugs in a dovetail manner so that said salient lugs can be completely tucked into said channels upon inserting said plug-in switch unit into said switch niche and spring out to be caught and fastened under said panel when said plug-in switch unit has been inserted therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wall outlet device comprising:
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a power outlet assembly including a panel and a base plate being fixedly attached together and an outlet niche assembly installed behind said base plate to be fixedly attached to a wall box on the wall; a plug-in outlet unit insertably positioned in said outlet niche assembly, said plug-in outlet unit having a portion supportably interacting with said panel and base plate; and control means slidably positioned between said panel and said base plate adapted for releasably controlling said plug-in outlet unit to be removed from said outlet niche assembly, said plug-in outlet unit includes a top cover having plug holes for a plug to insert therein, a base for installing a first socket contact, a second socket contact and a fixed leaf spring, said base having a rectangular configuration and having a bottom portion, said base tapering off toward its bottom portion and having four salient lugs extending upward from edges of the bottom portion of said base toward a portion of said top cover at a given angle so as to acquire the inward and outward elasticity, said top cover having four channels on its two opposite outsides engaging with said four salient lugs in a dovetail manner so that said salient lugs can be completely tucked into said channels upon inserting said plug-in outlet unit into said outlet niche assembly and spring out to be caught and fastened under said panel when said plug-in outlet unit has been inserted therein. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification