Chassis for a lock set
View Patent ↗An interconnected chassis includes a mounting plate including a spring engaging tab. A cover plate includes a recessed spring retention wall. A lower cam has a lower pivot axis. An upper cam has an upper pivot axis. A slide plate is positioned between the mounting plate and the cover plate, the slide plate having a spring retention slot and a spring support ledge. The slide plate includes a first end having a pivot feature and a second end having a lower cam engagement member for engaging the lower cam. A spring is positioned in the spring retention slot of the slide plate and in the recessed spring retention wall of the cover plate, and between the spring engaging tab of the mounting plate and the spring support ledge of the slide plate. A toggle is pivotably coupled to the slide plate by the pivot feature, the toggle having a head portion positioned to engage the upper cam.
1. An interconnected chassis for a lock set, comprising:
a mounting plate including a spring engaging tab;
a cover plate including a recessed spring retention wall;
a lower cam having a lower pivot axis passing through said mounting plate and said cover plate;
an upper cam having an upper pivot axis passing through said mounting plate and said cover plate;
a slide plate positioned between said mounting plate and said cover plate, said slide plate having a spring retention slot and a spring support ledge, said slide plate including a first end having a pivot feature and a second end having a lower cam engagement member for engaging said lower cam;
a spring positioned in said spring retention slot of said slide plate and in said recessed spring retention wall of said cover plate, and between said spring engaging tab of said mounting plate and said spring support ledge of said slide plate; and
a toggle pivotably coupled to said slide plate by said pivot feature, said toggle having a head portion positioned to engage said upper cam.
2. The interconnected chassis of claim 1 , wherein a rotation of said lower cam about said lower pivot axis results in a displacement of said slide plate, said displacement of said slide plate causing said head portion of said toggle to engage said upper cam, resulting in a rotation of said upper cam about said upper pivot axis.
3. The interconnected chassis of claim 1 , further comprising:
a turn piece directly connected to said upper cam without connection to an escutcheon; and
a dead bolt assembly coupled to said upper cam.
4. The interconnected chassis of claim 1 , further comprising:
a turn piece coupled to said upper cam;
a dead bolt assembly coupled to said upper cam; and
an operator coupled to said lower cam, wherein a rotation of said operator results in a linear displacement of said slide plate, thereby moving said toggle to engage and rotate said upper cam to unlock said dead bolt assembly.
5. The interconnected chassis of claim 4 , wherein said operator includes a mounting portion that is connected to a hub via said lower cam, said lower cam including a catch mechanism that releasably engages said mounting portion of said operator.
6. The interconnected chassis of claim 1 , wherein said recessed spring retention wall defines an elongated cavity in said cover plate.
7. The interconnected chassis of claim 1 , further comprising:
a dead bolt assembly coupled to said upper cam, said dead bolt assembly having a dead bolt;
a latch bolt assembly coupled to said lower cam, said latch bolt assembly having a latch bolt; and
an operator coupled to said lower cam, wherein said lower cam, said slide plate, said toggle and said upper cam are configured and arranged so that a rotation of said operator results in a linear displacement of said slide plate to move said toggle to engage and rotate said upper cam to move said dead bolt to a fully retracted position prior to said latch bolt being fully retracted.
8. An interconnected chassis for a lock set, comprising:
a mounting plate including a first spring engaging tab and a second spring engaging tab;
a cover plate including a first recessed spring retention wall and a second recessed spring retention wall;
a lower cam having a lower pivot axis passing through said mounting plate and said cover plate;
an upper cam having an upper pivot axis passing through said mounting plate and said cover plate;
a slide plate positioned between said mounting plate and said cover plate, said slide plate having a first spring retention slot, a second spring retention slot, a first spring support ledge and a second spring support ledge, said slide plate including a first end having a pivot feature and a second end having at least one lower cam engagement member for engaging said lower cam;
a first spring positioned in said first spring retention slot of said slide plate and in said first recessed spring retention wall of said cover plate, and positioned between said first spring engaging tab of said mounting plate and said first spring support ledge of said slide plate;
a second spring positioned in said second spring retention slot of said slide plate and in said second recessed spring retention wall of said cover plate, and positioned between said second spring engaging tab of said mounting plate and said second spring support ledge of said slide plate; and
a toggle pivotably coupled to said slide plate by said pivot feature, said toggle having a head portion positioned to engage said upper cam.
9. The interconnected chassis of claim 8 , wherein a rotation of said lower cam about said lower pivot axis results in a displacement of said slide plate, said displacement of said slide plate causing said head portion of said toggle to engage said upper cam, resulting in a rotation of said upper cam about said upper pivot axis.
10. The interconnected chassis of claim 8 , further comprising:
a dead bolt assembly; and
a turn piece coupled to said upper cam and said dead bolt assembly.
11. The interconnected chassis of claim 10 , further comprising an operator coupled to said lower cam, wherein a rotation of said operator results in a linear displacement of said slide plate, thereby moving said toggle to engage and rotate said upper cam to unlock said dead bolt assembly.
12. The interconnected chassis of claim 8 , further comprising an operator coupled to said lower cam.
13. The interconnected chassis of claim 8 , wherein said first recessed spring retention wall defines a first elongated cavity in said cover plate and wherein said second recessed spring retention wall defines a second elongated cavity in said cover plate.
14. The interconnected chassis of claim 8 , further comprising:
a dead bolt assembly coupled to said upper cam, said dead bolt assembly having a dead bolt;
a latch bolt assembly coupled to said lower cam, said latch bolt assembly having a latch bolt; and
an operator coupled to said lower cam, wherein said lower cam, said slide plate, said toggle and said upper cam are configured and arranged so that a rotation of said operator results in a linear displacement of said slide plate to move said toggle to engage and rotate said upper cam to move said dead bolt to a fully retracted position prior to said latch bolt being fully retracted.
15. A method for providing a lock set with an interconnected chassis, comprising the steps of:
configuring a mounting plate for attachment to a door, said mounting plate having a spring engaging tab;
configuring a cover plate including a recessed spring retention wall;
associating a first cam, having a first pivot axis, with said mounting plate and said cover plate;
associating a second cam, having a second pivot axis, with said mounting plate and said cover plate, said first cam and said second cam being spaced apart;
positioning a slide plate between said mounting plate and said cover plate, said slide plate having a spring retention slot and a spring support ledge, said slide plate including a first end having a pivot feature and a second end having a lower cam engaging member for engaging said lower cam;
positioning a compression spring in said spring retention slot of said slide plate and in said recessed spring retention wall of said cover plate, and between said spring engaging tab of said mounting plate and said spring support ledge of said slide plate; and
pivotably coupling a toggle to said slide plate by said pivot feature, said toggle having a head portion positioned to engage said upper cam.
16. The method of claim 15 , wherein a rotation of said lower cam about said lower rotational axis results in a displacement of said slide plate, said displacement of said slide plate causing said head portion of said toggle to engage said upper cam, resulting in a rotation of said upper cam about said upper pivot axis.
17. The method of claim 15 , further comprising attaching an operator to said lower cam, wherein a rotation of said operator about said lower pivot axis results in a vertical translation of said slide plate causing said head portion of said toggle to engage said upper cam.
18. The method of claim 17 , further comprising coupling a dead bolt assembly to said upper cam, and wherein said rotation of said operator results in a translation of said slide plate and said toggle, said toggle engaging said upper cam to unlock said dead bolt assembly.