초록 ▼

A door operator mechanism which has a motive power source and drive and a manual drive for use with a manual source of power. A mechanism is included which by the simple expedient of pulling a chain or cable disconnects the power source and associated driver and connects the manual drive for use of

A door operator mechanism which has a motive power source and drive and a manual drive for use with a manual source of power. A mechanism is included which by the simple expedient of pulling a chain or cable disconnects the power source and associated driver and connects the manual drive for use of a manual source of power. Release of the cable causes the reverse.

대표청구항 ▼

1. A door operator mechanism including in combination a housing having a backwall and a sidewall, a motor mounting bracket mounted on said backwall inside said housing and having first and second end portions and an intermediate portion, pivot means pivotally connecting said first end portion of sai

1. A door operator mechanism including in combination a housing having a backwall and a sidewall, a motor mounting bracket mounted on said backwall inside said housing and having first and second end portions and an intermediate portion, pivot means pivotally connecting said first end portion of said motor bracket to said housing, an electric motor carried by said motor bracket and having a drive shaft drivingly connected to a drive pulley, a driven pulley mounted for rotation on an axis parallel to said drive shaft, a belt drivingly interconnecting said drive and driven pulleys, a first spring means constantly urging said motor bracket in a first direction about said pivot means to tighten the engagement of said belt with said drive and driven pulleys, a brake bracket having a brake shoe portion and being pivotally connected to said housing, a second spring means connected to said brake bracket and constantly urging said brake shoe portion into engagement with said belt in the area of said driven pulley, a brake bracket pin secured by said brake bracket and located adjacent said electric motor whereby movement of said motor bracket in a second direction opposite to said first direction causes said motor to engage said brake bracket pin and pivot said brake bracket against the urging of said second spring means to disengage said brake shoe from said pulley and release the rotationally retarding force on said driven pulley, drive train means operably connecting said driven pulley to a rotatable jack shaft having first and second end portions, a manually rotatable sprocket mounted on said first end portion of said jack shaft and movable axially between first and second positions thereon, spring means urging said sprocket to said first position whereat it is freely rotatable relative to said jack shaft, a drive pin extending from said end portion of said jack shaft, a pivotally mounted shift lever having first and second end portions, said first end portion of said shift lever member being located adjacent said sprocket whereby pivoting of said shift lever causes said sprocket to move to said second position where said drive shoulder engages said drive pin and said jack shaft and said sprocket are rotationally locked together, a hand chain member connected to said sprocket for manually rotating the same, first and second cable guides mounted on said housing backwall outside said housing, said first and second cable guides having axes which extend generally at right angles to each other, said first cable guide being located in the general area of said motor mounting bracket and said second cable guide being located in the general area of said second end portion of said pivotally mounted shift lever member, a one piece cable having first and second end portion and an intermediate portion, said cable first end portion extending around said first cable guide and through an opening in said backwall and connected to said second end portion of said motor bracket, said cable second end portion extending around said second cable guide and through an opening in said sidewall and connected to said second end portion of said shift lever member, a chain connected to said intermediate portion of said cable by way of a ring member whereby the application of a force on said chain causes said motor bracket to move in a second direction to loosen said belt which in turn causes said brake shoe to become disengaged from said pulley and said sprocket moves to said second position to engage said drive shoulder with said drive pin. 2. A door operator mechanism including in combination a main shaft mounted for rotation and adapted to be driven from either a manual or electrical power source, a sprocket mounted on said main shaft for axial movement between first and second positions thereon, spring means urging said sprocket to said first position where it is rotatively disconnected from said main shaft, manually operable means for moving said sprocket to said second position where it is rotatively connected to said main shaft, a manually operable chain on said sprocket for rotating the same, an electric motor having a shaft drivingly connected to a drive pulley, means supporting said electric motor which permits said motor to be moved between first and second positions, a driven pulley, a belt extending between said drive and driven pulley to drivingly interconnect the two when said motor is in said first position and when said motor is in said second position loosening said belt to drivingly disconnect the two, a brake member engageable with said belt in the area of said driven pulley in a first position and movable to a second and disengaged position, said motor in said second position engaging said brake member to move same to said second and disengaged position, drive train means operably connecting said driven pulley to said main shaft, cable means connected to said means for supporting said electric motor and to said manually operable means for moving said sprocket which cable means when manipulated moves said electric motor to said second position to disengage said drive and driven pulleys and said brake member and to move said sprocket to said second position to rotatively connect same to said main shaft. 3. A door operator mechanism as claimed in claim 2 wherein said cable means comprises a continuous one piece cable member having first and second end portions, first and second cable guides, said first cable guide being located adjacent said means for supporting said electric motor and said second cable guide being located adjacent said manually operable means for moving said sprocket, said cable first end portion engaging said first cable guide and being attached to said means for supporting said electric motor, said cable second end portion engaging said second cable guide and being attached to said manually operable means for moving said sprocket. 4. A door operator mechanism as claimed in claim 3 wherein a ring member receives said cable member and a pull chain is connected to said ring for manipulating said cable member. 5. A door operator mechanism including in combination a main shaft mounted for rotation and adapted to be driven from either a manual or motive power source, a sprocket mounted on said main shaft for movement between first and second positions thereon, means urging said sprocket to said first position where it is rotatively disconnected from said main shaft, manually operable means for moving said sprocket to said second position where it is rotatively connected to said main shaft, means for rotating said sprocket, a motive power source drivingly connected to a drive pulley, means supporting said motive power source which permits same to be moved between first and second positions, a driven pulley, connection means extending between said drive and driven pulley to drivingly interconnect the two when said motive power source is in said first position and when said motive power source is in said second position loosening said connection means to drivingly disconnect the two, a brake member engageable with said connection means in a first position and movable to a second and disengaged position, said motive power source in said second position engaging said brake member to move same to said second and disengaged position, means operably connecting said driven pulley to said main shaft, cable means connected to said means for supporting said motive power source and to said manually operable means for moving said sprocket which cable means when manipulated moves said motive power source to said second position to disengage said drive and driven pulleys and said brake member and to move said sprocket to said second position to rotatively connect same to said main shaft. 6. A door operator mechanism as claimed in claim 5 wherein said cable means comprises a continuous one piece cable member having first and second end portions, first and second cable guides, said first cable guide being located adjacent said means for supporting said motive power source and said second cable guide being located adjacent said manually operable means for moving said sprocket, said cable first end portion engaging said first cable guide and being attached to said means for supporting said motive power source said cable second end portion engaging said second cable guide and being attached to said manually operable means for moving said sprocket. 7. A door operator mechanism as claimed in claim 6 wherein a ring member receives said cable member and a pull chain is connected to said ring for manipulating said cable member.