A fire bolt assembly (10) includes a receiving tube (20) mounted in a door (106). A mounting member (32) is mounted to the receiving tube (20) and includes two coupling faces (56). A positioning bolt (90) is received in the receiving tube (20) and includes a front end (92). A spring (100) is mounted
A fire bolt assembly (10) includes a receiving tube (20) mounted in a door (106). A mounting member (32) is mounted to the receiving tube (20) and includes two coupling faces (56). A positioning bolt (90) is received in the receiving tube (20) and includes a front end (92). A spring (100) is mounted in the receiving tube (20) for biasing the front end (92) of the positioning bolt (90) out of the receiving tube (20). A stop member (58) includes two legs (66) respectively engaged with the coupling faces (56) of the mounting member (32) to hold the positioning bolt (90) in the receiving tube (20). The front end (92) of the positioning bolt (90) is moved out of the receiving tube (20) to engage with a coupling hole (116) in another door (112) or a door frame when the stop member (58) melts due to the heat of the fire, locking the door (106) in place during the fire.
대표청구항▼
1. A fire bolt assembly for a door comprising, in combination: a receiving tube adapted to be mounted in a door, with the receiving tube including front and rear ends spaced along a first axis with the receiving tube further including a receiving space extending along the first axis and having an op
1. A fire bolt assembly for a door comprising, in combination: a receiving tube adapted to be mounted in a door, with the receiving tube including front and rear ends spaced along a first axis with the receiving tube further including a receiving space extending along the first axis and having an opening in the front end of the receiving tube;a mounting member including a mounting plate adapted to be fixed on an end face of the door, with the mounting plate having first and second faces spaced along the first axis, with the mounting member further including a sleeve protruding from the second face and extending away from the first face of the mounting plate along the first axis, with the mounting member further including an axial hole extending from the first face of the mounting plate through the sleeve along the first axis, with the sleeve of the mounting member extending through the front end of the receiving tube and received in the receiving space of the receiving tube, with the sleeve of the mounting member including first and second coupling faces spaced along a second axis perpendicular to the first axis, with each of the first and second coupling faces spaced from the second face of the mounting plate along the first axis;a stop member mounted in the axial hole of the mounting member and including a stop plate having front and rear surfaces spaced along the first axis, with the stop member further including first and second legs spaced along the second axis and each protruding from the rear surface and extending away from the front surface of the stop plate along the first axis, with each of the first and second legs extending into the axial hole of the mounting member, with each of the first and second legs including a connecting end interconnected to the rear surface of the stop plate and a free end distant to the rear surface of the stop plate, with the free end spaced from the connecting end along the first axis, with each of the first and second legs further including outer and inner side faces spaced along the second axis, with the inner side faces of the first and second legs facing each other, with a spacing perpendicular to the first axis between the inner side faces of the connecting ends of the first and second legs being smaller than that between the inner side faces of the free ends of the first and second legs, with a hook formed on the outer side face of the free end of each of the first and second legs and including an engaging face extending in a third axis perpendicular to the first and second axes, with the engaging face of each of the hooks engaging with one of the first and second coupling faces of the sleeve of the mounting member, with the outer side face of the connecting end of each of the first and second legs spaced from the sleeve of the mounting member;a positioning bolt received in the receiving space of the receiving tube, with the positioning bolt including front and rear ends spaced along the first axis; and a spring received in the receiving space of the receiving tube, with the spring compressed between the rear end of the positioning bolt and the rear end of the receiving tube, with the front end of the positioning bolt being biased by the spring and pressing against the inner side faces of the first and second legs of the stop member;with the stop member made of material having a melting point lower than those of the mounting member, the positioning bolt, and the receiving tube, with the stop member holding the positioning bolt in the receiving space of the receiving tube, with the spring biasing the front end of the positioning bolt out of the front end of the receiving tube when the stop member melts,with the front end of the positioning bolt including an abutting periphery tapering away from rear end of the positioning bolt, with the abutting periphery of the positioning bolt pressing against the inner side faces of the first and second legs of the stop member under the bias of the spring, accommodating the positioning bolt in place and preventing the stop member from disengaging from the receiving tube, with the front end of the positioning bolt spaced from the rear surface of the stop plate along the first axis. 2. The fire bolt assembly as claimed in claim 1, with the sleeve of the mounting member including inner and outer peripheries spaced in a radial direction perpendicular to the first axis, with the sleeve of the mounting member further including first and second radial holes extending in the radial direction from the outer periphery through the inner periphery of the sleeve, with each of the first and second radial holes including a side wall forming one of the first and second coupling faces of the sleeve, and with each of the hooks of the stop member engaged in one of the first and second radial holes, with the engaging face of each of the hooks engaged with one of the side walls of the first and second radial holes. 3. The fire bolt assembly as claimed in claim 2, with the axial hole of the mounting member including an opening in the first face of the mounting plate, with the opening including a conical inner periphery tapering from the first face towards the second face of the mounting plate, with the stop plate of the stop member including a peripheral wall tapering from the front surface towards the rear surface and having a conicity equal to that of the inner periphery of the opening, and with the peripheral wall of the stop plate abutting the inner periphery of the opening of the mounting member. 4. The fire bolt assembly as claimed in claim 3, with each of the first and second legs including a projection formed on the outer side face thereof and adjacent to a side of the hook, with the projection of each of the first and second legs including a stop face extending along the third axis, with the stop face abutting an inner periphery of the axial hole when the front end of the positioning bolt presses against the inner side faces of the first and second legs of the stop member. 5. The fire bolt assembly as claimed in claim 4, with the positioning bolt including a flange on the rear end of the positioning bolt, with the flange having a diameter perpendicular to the first axis greater than that of the positioning bolt, with the sleeve further including a front end interconnected to the second face of the mounting plate and a rear end distant to the second face of the mounting plate, with the rear end of the sleeve spaced from the front end of the sleeve along the first axis, with the diameter of the flange being greater than that of the axial hole, and with the flange abutting against the rear end of the sleeve when the front end of the positioning bolt extends out of the front end of the receiving tube while the stop member melts. 6. The fire bolt assembly as claimed in claim 1, with the axial hole of the mounting member including an opening in the first face of the mounting plate, with the opening including a conical inner periphery tapering from the first face towards the second face of the mounting plate, with the stop plate of the stop member including a peripheral wall tapering from the front surface towards the rear surface and having a conicity equal to that of the inner periphery of the opening, and with the peripheral wall of the stop plate abutting the inner periphery of the opening of the mounting member. 7. The fire bolt assembly as claimed in claim 6, with each of the first and second legs including a projection formed on the outer side face thereof and adjacent to a side of the hook, with the projection of each of the first and second legs including a stop face extending along the third axis, with the stop face abutting an inner periphery of the axial hole when the front end of the positioning bolt presses against the inner side faces of the first and second legs of the stop member. 8. The fire bolt assembly as claimed in claim 7, with the positioning bolt including a flange on the rear end of the positioning bolt, with the flange having a diameter perpendicular to the first axis greater than that of the positioning bolt, with the sleeve further including a front end interconnected to the second face of the mounting plate and a rear end distant to the second face of the mounting plate, with the rear end of the sleeve spaced from the front end of the sleeve along the first axis, with the diameter of the flange being greater than that of the axial hole, and with the flange abutting against the rear end of the sleeve when the front end of the positioning bolt extends out of the front end of the receiving tube while the stop member melts.
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이 특허에 인용된 특허 (16)
Andrews Sydney A. (Stapleford GB2), Aperture plugs.
Leites, Rick; Walsh, John E.; Lorello, Michael J.; O'Day, Adam; Clark, Douglas A.; Bogdanov, Victor; Arcaria, Angelo S., Door lock access control component mounting.
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