Note: Descriptions are shown in the official language in which they were submitted.
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LOCKING ASSEMBLY FOR A DOOR
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a locking assembly, and more
particularly to a locking assembly for a door that has a prolonged useful life
and can be quickly unlocked.
2. Description of Related Art
A conventional locking assembly is securely mounted on a door to lock
the door to prevent unauthorized access to a room. The conventional locking
assembly has an exterior assembly, a multi-point latch and an interior
assembly.
The exterior assembly and the interior assembly are respectively mounted on
opposite sides of the door and the multi-point latch is mounted on a sidewall
of
the door between the exterior assembly and the interior assembly. The exterior
assembly has a press-button, a rotating spindle extended through the multi-
point latch and connected to the interior assembly and an outside reset spring
mounted in the exterior assembly. The interior assembly has an inner reset
spring mounted in the interior assembly to press the rotating spindle of the
exterior assembly. The multi-point latch has at least one latch bolt and a
dead
bolt. The at least one latch bolt and the dead bolt can be retracted into the
multi-point latch to unlock the door.
When the press-button of the exterior assembly is pressed, the rotating
spindle will rotate to move the multi-point latch to unlock the door and press
the reset spring in the interior assembly at the same time. The reset springs
are
compressed at the same time by the rotating spindle when pressing the press-
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button and this will increase a force required to press the press-button and
shorten useful life of the reset spring.
Furthermore, the at least one latch bolt and the dead bolt of the multi-
point latch bar can not be retracted into the multi-point latch bar at the
same
time when the user wants to unlock the door from the interior assembly side,
and this is inconvenient and may cause unnecessary delays in emergencies.
The invention provides a locking assembly that mitigates or obviates
the aforementioned problems.
SUMMARY OF THE INVENTION
The main objective of the present invention is to provide a locking
assembly for a door that has a prolonged useful life and can be quickly
unlocked.
The locking assembly for a door having an outer side, an inner side and
a sidewall in accordance with the present invention has an exterior assembly,
a
cylinder and an interior assembly. The exterior assembly is securely mounted
on the outer side of the door and has an outside mounting seat, a press-
button, a
transmitting device, a transmitting board, an engaging wheel and a rotating
spindle. The cylinder is mounted in the outside mounting seat of the exterior
assembly and has a cylinder-transmitting panel. The interior assembly is
securely mounted on the inner side of the door, is connected to the exterior
assembly and the cylinder and has an inside mounting seat, an operating
handle,
a switch, a linking device, a seat board, an inside reset spring and a switch
mount.
Other objectives, advantages and novel features of the invention will
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become more apparent from the following detailed description when taken in
conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective view of a locking assembly for a door in
accordance with the present invention;
Fig. 2A is an exploded perspective view of an exterior assembly of the
locking assembly in Fig. 1;
Fig. 2B is an enlarged perspective view of a press-button of the
exterior assembly in Fig. 2A;
Fig. 3 is an enlarged exploded perspective view of the exterior
assembly in Fig. 2;
Fig. 4 is an enlarged exploded perspective view of an interior assembly
of the locking assembly in Fig. 1;
Fig. 5 is an enlarged, partially exploded perspective view of a linking
device of the interior assembly in Fig. 4;
Fig. 6 is a side view of the locking assembly for a door in Fig. 1;
Fig. 7 are operational side views of the exterior assembly in Fig. 1
when the press-button is pressed downward;
Fig. 8 is an operational side view in partial section of the multi-point
latch bar in Fig. I when a rotating spindle of the exterior assembly is
rotated in
a clockwise direction;
Fig. 9 are operational side views of the interior assembly in Fig. I
when a switch of the interior assembly is rotated;
Fig. 10 is an operational side view of the multi-point latch bar in Fig. I
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when a cylinder-transmitting panel of the cylinder is rotated in a
counterclockwise direction;
Fig. 11 are operational side views of the interior assembly in Fig. 1
when an operating handle of the interior assembly is rotated;
Fig. 12 is an operational side view of the multi-point latch bar in Fig. I
shown the door is unlocked.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
With reference to Figs. I to 6, a locking assembly in accordance with
the present invention is mounted on a door having an outer side, an inner side
and a sidewall, is connected to a multi-point latch (30) and comprises an
exterior assembly (10), a cylinder (20) and an interior assembly (40).
With reference to Figs. 1 to 3, the exterior assembly (10) is securely
mounted on the outer side of the door and has an outside mounting seat (11), a
press-button (12), a transmitting device (13), a transmitting board (14), an
engaging wheel (15) and a rotating spindle (16).
The outside mounting seat (11) is securely mounted on the outer side
of the door and has an outer side, an inner side, an upper end, a lower end, a
handle (114), a mounting hole (111), two mounting bases (112), a mounting
pin (1122) and a cylinder hole (113). The inner side of the outside mounting
seat (11) abuts with the outer side of the door. The handle (114) is mounted
on
the outer side of the outside mounting seat (11) near the lower end. The
mounting hole (111) is square and is formed through the outside mounting seat
(11) near the handle (114). With further reference to Fig. 213, the mounting
bases (112) are formed on and protrude from the inner side of the outside
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mounting seat (11) beside the mounting hole (111) and each mounting base
(112) has a mounting recess (1121) facing the mounting hole (111). The
mounting pin (1122) is mounted in the mounting recesses (1121) of the
mounting bases (112). The cylinder hole (113) is formed through the outside
mounting seat (11) near the upper end.
The press-button (12) is pivotally connected to the outside mounting
seat (11) in the mounting hole (111) and has an inner end, an outer end, a top
side, a pin hole (121) and a driving surface (122). The inner end of the press-
button (12) is inserted in the mounting hole (111) and extends out of the
inner
side of the outside mounting seat (11). The pin hole (121) is formed through
the press-button (12) near the inner end and is mounted around the mounting
pin (1122) of the outside mounting seat (11). The driving surface (122) is
defined on the top side of the press-button (12) at the inner end.
The transmitting device (13) is mounted on the inner side of the outside
mounting seat (11) and has a transmitting casing (131), a covering panel (132)
and two lower supporting rods (133).
The transmitting casing (131) is rectangular, is mounted on the inner
side of the outside mounting seat (11) and has a closed outer side, an open
inner side, a top, a bottom, two opposite sidewalls, a width, a button through
hole (1311), multiple holding claws (1312) and an outer spindle hole (1313).
The closed outer side of the transmitting casing (13 1) is mounted on the
inner
side of the outside mounting seat (11) and covers the mounting recesses (112
1)
of the outside mounting seat (11) to hold the mounting pin (1122) between the
mounting bases (112) and the transmitting casing (131). The button through
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hole (1311) is formed through the closed outer side and the bottom of the
transmitting casing (131) and aligns with the mounting hole (111). The inner
end of the press-button (12) extends out of the button through hole (1311) of
the transmitting casing (131). The holding claws (1312) are respectively
formed on and protrude from the opposite sidewalls of the transmitting casing
(131) around the open inner side. The outer spindle hole (1313) is formed
through the closed outer side of the transmitting casing (131) above the
button
through hole (1311) and has a diameter.
The covering panel (132) is detachably connected to the transmitting
casing (131) to cover the open inner side of the transmitting casing (131) and
has a width, a top, a bottom, multiple holding holes (1321), an inner spindle
hole (1322), multiple fastener holes (1323), multiple fasteners (1324) and two
positioning holes (1325). The width of the covering panel (132) is wider than
the width of the transmitting casing (131). The inner end of the press-button
(12) extends out the bottom of the covering panel (132). The holding holes
(1321) are formed through the covering panel (132) and are respectively
connected to the holding claws (1312) to hold the covering panel (132)
securely with the transmitting casing (131). The inner spindle hole (1322) is
formed through the covering panel (132), aligns with the outer, spindle hole
(1313) of the transmitting casing (131) and has a diameter larger than the
diameter of the outer spindle hole (1313). The fastener holes (1323) are
formed
through the covering panel (132) near the top and the bottom. The fasteners
(1324) are mounted through the fastener holes (1323) and are connected
securely to the inner side of the outside mounting seat (11). The positioning
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holes (1325) are formed through the covering panel (132) beside the inner
spindle hole (1322).
The lower supporting rods (133) are connected to the covering panel
(132).and each lower supporting rod (133) has a diameter, an outer end, an
inner end and a positioning pin (1331). The positioning pins (133) are
respectively formed on and protrude from the outer ends of the lower
supporting rods (133), are respectively mounted in the positioning holes
(1325)
of the covering panel (132) and each positioning pin (133) has a diameter
narrower than the diameter of the lower supporting rod (133).
The transmitting board (14) is mounted in the transmitting device (13)
between the transmitting casing (131) and the covering panel (132) and has a
top, a bottom, a middle, two sides, an abutting slab (141), a rack (142), a
spring
mount (143) and an outer reset spring (144). The abutting slab (141) is formed
on and protrudes from the bottom of the transmitting board (14), extends out
of
the bottom of the covering panel (132) and abuts the driving surface (122) of
the press-button (12). The rack (142) is formed in the transmitting board (14)
near the middle and is parallel with the opposite sidewalls of the
transmitting
casing (131) near one of the sides of the transmitting board (14). The spring
mount (143) is formed on the side of the transmitting board (14) that is
adjacent
to the rack (142) near the top of the transmitting board (14). The outside
reset
spring (144) is mounted between the transmitting casing (131) and the
transmitting board (14) and has two ends. One of ends of the outside reset
spring (144) abuts the top of the transmitting casing (13 1) and the other end
of
the outside reset spring (144) is mounted on the spring mount (143) of the
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transmitting board (14).
The engaging wheel (15) is rotatably mounted in the transmitting board
(14) between the transmitting casing (131) and the covering panel (132),
engages the rack (142) of the transmitting board (14) and has an inner side,
an
outer side, a periphery, a spindle hole (151), a circular hole (152) and
multiple
engaging teeth (153). The inner side of the engaging wheel (15) is mounted in
the inner spindle hole (1322) of the covering panel (132). The outer side of
the
engaging wheel (15) is mounted in the transmitting board (14). The spindle
hole (151) is square, is formed in the inner side of the engaging wheel (15)
and
has a diameter. The circular hole (152) is formed in the outer side of the
engaging wheel (15), communicates with the spindle hole (151) and has a
diameter narrower than the diameter of the spindle hole (151). The engaging
teeth (153) are formed on the periphery of the engaging wheel (15) near the
outer side and engage the rack (142) of the transmitting board (14).
The rotating spindle (16) is square, is connected to the engaging wheel
(15) and has an outer end, an inner end, a circular rod (161), a retaining
ring
(162) and a tilting plate (163). The outer end of the rotating spindle (16) is
securely mounted in the spindle hole (151) of the engaging wheel (15). The
circular rod (161) is formed on the outer end of the rotating spindle (16),
extends through the circular hole (152) of the engaging wheel (15) and the
outer spindle hole (1313) of the transmitting casing (131) and has a free end,
an
external surface and an annular groove (1611). The free end of the circular
rod
(161) extends out of the closed outer side of the transmitting casing (13 1).
The
engaging groove (1611) is formed on the external surface of the circular rod
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(161) in the free end. The retaining ring (162) is mounted around the annular
groove (1611) and abuts the closed outer side of the transmitting casing (131)
to hold the rotating spindle (16) with the transmitting casing (131). The
tilting
plate (163) is formed on and protrudes from the inner end of the rotating
spindle (16).
With further reference to Fig. 2A, the cylinder (20) is mounted in the
cylinder hole (113) of the outside mounting seat (11) of the exterior assembly
(10) and has an outer side, an inner side, a keyway, a cylinder-transmitting
panel (21) and two upper supporting rods (22). The keyway is formed in the
outer side of the cylinder (20). With reference to Fig. 6, the cylinder-
transmitting panel (21) is rotatably connected to the inner side of the
cylinder
(20) and extends through the door. The upper supporting rods (22) are
connected to the inner side of the cylinder (20) beside the cylinder-
transmitting
panel (21) and extend through the door.
The multi-point latch (30) may be conventional, is securely mounted in
the sidewall of the door, is connected to the exterior assembly (10) and the
cylinder (20) and has a sidewall, a rear side, multiple latch bolts (3 1), a
rotating
hole (32), a dead bolt (33), a panel hole (34) and multiple rod holes (35).
The
latch bolts (31) are movably mounted on the sidewall of the multi-point latch
(30), extend out of the sidewall of the door and can be retracted
simultaneously
into the multi-point latch (30) by a linking device. The rotating hole (32) is
square, is formed through the multi-point latch (30) and is mounted around the
rotating spindle (16). When the multi-point latch (30) is rotated with the
rotating spindle (16) in the rotating hole (32), the latch bolts (31) will
move
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into the multi-point latch (30) to unlock the door. The dead bolt (33) is
movably mounted on the sidewall of the multi-point latch (30) between two of
the latch bolts (31). The panel hole (34) is formed through the multi-point
latch
bar (30) and is mounted around the cylinder-transmitting panel (21) of the
cylinder (20). When the panel hole (34) is rotated with the cylinder-
transmitting panel (21) of the cylinder (20), the dead bolt (33) will move out
of
the multi-point latch (30) to lock the door. The rod holes (35) are separately
formed through the multi-point latch bar (30) near the rotating hole (32) and
the panel hole (34). With further reference to Figs 8, 10 and 12, one of the
lower supporting rods (133) is mounted through the rod hole (35) that adjacent
to the rotating hole (32) and the other lower supporting rod (133) abuts with
the
rear side of the multi-point latch bar (30). One of the upper supporting rods
(22)
is mounted through the rod hole (35) that adjacent to the panel hole (34) and
the other upper supporting rod (22) abuts with the rear side of the multi-
point
latch bar (30).
Clockwise and counterclockwise directions described are in
accordance with the drawings.
With reference to Figs. 2 and 4 to 6, the interior assembly (40) is
securely mounted on the inner side of the door, is connected to the exterior
assembly (10), the cylinder (20) and the multi-point latch (30) and has an
outer
side, an inner side, an inside mounting seat (41), an operating handle (42), a
switch (43), a linking device (44), a middle board (45), a seat board (46), an
inside reset spring (47), a switch mount (48) and multiple fastening bolts
(49).
The inside mounting seat (41) is securely mounted on the inner side of
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the door and has an outer side, an inner side, a top end, a bottom end, a
handle
hole (411), a switch hole (412) and a positioning stub (413). The outer side
of
the inside mounting seat (41) is mounted on the inner side of the door. The
handle hole (411) is formed through the inside mounting seat (41) near the
bottom end. The switch hole (412) is formed through the inside mounting seat
(41) near the top end and aligns with the cylinder-transmitting panel (21) of
the
cylinder (20). The positioning stub (413) is formed on and protrudes from the
outer side of the inside mounting seat (41) above the handle hole (411) and
aligns with the rotating spindle (16) of the exterior assembly (10).
The operating handle (42) is rotatably connected to the inside mounting
seat (41) in the holding hole (411) and has an external surface, a mounting
end,
an extending end, an operating stem (421) and a shaft hole (422). The
mounting end of the operating handle (42) is rotatably mounted in the handle
hole (411) of the inside mounting seat (41). The extending end of the
operating
handle (42) extends out of the inner side of the inside mounting seat (41).
The
operating stem (421) is formed on and protrudes from the external surface of
the operating handle (42) near the extending end. The shaft hole (422) is
square
and is formed in the mounting end of the operating handle (42).
The switch (43) is rotatably connected to the inside mounting seat (41)
in the switch hole (412) and has a mounting end, an extending end and a
connecting post (43 1). The mounting end of the switch (43) is mounted through
the switch hole (412) and extends out of the outer side of the inside mounting
seat (41). The extending end of the switch (43) extends out of the inner side
of
the inside mounting seat (41). The connecting post (431) is noncircular in
cross
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section and is formed on and protrudes from the mounting end of the switch
(43).
The linking device (44) is mounted on the outer side of the inside
mounting seat (41) and has a lower rotating button (441), two connecting
beams (443), an orientating shaft (442), two limiting beams (448), a rail
board
(446) and a connecting board (444).
The lower rotating button (441) aligns with the handle hole (411) of the
inside mounting seat (41) and has an outer side, an inner side, an external
surface, a location shaft (4412), a driving square-hole (4411) and two lower
connecting arms (4413). The inner side of the lower rotating button (441)
abuts
the outer side of the inside mounting seat (41). The location shaft (4412) is
formed on and protrudes from the outer side of the lower rotating button
(441).
The driving square-hole (4411) is formed through the location shaft (4412) and
the sides of the lower rotating button (441) and aligns with the handle hole
(411)
of the inside mounting seat (41). The lower connecting arms (4413) are formed
on and protrude from the external surface of the lower rotating button (441)
and each connecting arm (4413) has a free end.
The connecting beams (443) are pivotally connected to the lower
rotating button (441) and each connecting beam (443) has a lower end and an
upper end. The lower ends of the connecting beams (443) are respectively and
pivotally connected to the free ends of the lower connecting arms (4413) of
the
lower rotating button (441).
The orientating shaft (442) is pivotally connected to the connecting
beams (443) above the lower rotating button (441), is rotatably mounted on the
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positioning stub (413) of the inside mounting seat (41) and has an inner side,
an
outer side, an external surface, two engaging holes (4421) and two linking
arms
(4422). The inner side of the orientating shaft (442) is rotatably mounted
around the positioning stub (413). The engaging holes (4421) are formed in the
outer side of the orientating shaft (442), communicate with each other and
selectively engage the tilting plate (163) of the rotating spindle (16). The
linking arms (4422) are formed on and protrude from the external surface of
the orientating shaft (442) and are respectively and pivotally connected to
the
upper ends of the connecting beams (443).
The limiting beams (448) are pivotally connected to the orientating
shaft (442) and each limiting beams (448) has a lower end, an upper end and a
lower wheel (447). The lower ends of the limiting beams (448) are pivotally
connected to the orientating shaft (442). The lower wheels (447) are
respectively and rotatably connected to the upper ends of the limiting beams
(448).
The rail board (446) is connected to the limiting beams (448) and has a
lower end, an upper end, two elongated grooves (4461) and an upper wheel
(445). The elongated grooves (4461) are formed through the rail board (446)
near the lower end and the lower wheels (447) of the limiting beams (448) are
respectively and rotatably mounted in the elongated grooves (4461). The upper
wheel (445) is rotatably connected to the upper end of the rail board (446).
The connecting board (444) is connected to the connecting post (43 1)
of the switch (43), is connected to the rail board (446) and has a post hole
(4441) and a C-shaped groove (4442). The post hole (4441) is noncircular, is
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formed through the connecting board (444) and is securely mounted around the
connecting post (431) of the switch (43). The C-shaped groove (4442) is
formed through the connecting board (444). The upper wheel (445) of the rail
board (446) is rotatably mounted in the C-shaped groove (4442) of the
connecting board (444).
The middle board (45) is connected to the outer side of the inside
mounting seat (41) to cover the linking device (44) between the inside
mounting seat (41) and the middle board (45) and has a length, a lower end, an
upper end, a lower guiding hole (451), a middle guiding hole (452) and an
upper guiding hole (453). The lower guiding hole (451) is formed through the
middle board (45) near the lower end and is mounted around the location shaft
(4412) of the lower rotating button (441). The middle guiding hole (452) is
formed through the middle board (45) and is mounted around the orientating
shaft (442). The upper guiding hole (453) is formed through the middle board
(45) near the upper end.
The seat board (46) is securely connected to the inside mounting seat
(41) to cover the middle board (45) and the linking device (44) between the
inside mounting seat (41) and the seat board (46), abuts the supporting rods
(133, 22) of the transmitting device (13) and the cylinder (20) and has a
length,
a lower end, an upper end, a spring hole (461), a middle locating hole (462),
an
upper locating hole (463) and multiple through holes (464). The length of the
seat board (46) is longer than the length of the middle board (45). The spring
hole (461) is formed through the seat board (46) near the lower end and aligns
with the lower guiding hole (451) of the middle board (45). The middle
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locating hole (462) is formed through the seat board (46), aligns with the
middle guiding hole (452) of the middle board (45) and is mounted around the
orientating shaft (442). The upper locating hole (463) is formed through the
seat board (46) and aligns with the upper guiding hole (453) of the middle
board (45). The through holes (464) are formed through the seat board (46) and
are respectively align with the supporting rods (133, 22) of the transmitting
device (13) and the cylinder (20).
The inside reset spring (47) is connected to the seat board (46) in the
spring hole (461) and has a center and a driving shaft (471). The driving
shaft
(471) is square, is mounted through the center of the inside reset spring (47)
and the driving square-hole (4411) of the lower rotating button (441) and is
securely connected to the shaft hole (422) of the operating handle (42).
The switch mount (48) is rotatably mounted between the upper guiding
hole (453) of the middle board (45) and the upper locating hole (463) of the
seat board (46) and has an outer end and an inner end. The outer end of the
switch mount (48) is mounted around the cylinder-transmitting panel (21) of
the cylinder (20). The inner end of the switch mount (48) is mounted around
the connecting post (431) of the switch (43). When a user rotates the switch
(43), the switch mount (48) and the cylinder-transmitting panel (21) will be
rotated with the switch (43) in the same direction.
The fastening bolts (49) are mounted through the through holes (464)
of the seat board (46) and are respectively and securely connected to the
supporting rods (133, 22) of the transmitting device (13) and the cylinder
(20)
to hold the interior assembly (40) with the multi-point latch bar (30), the
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cylinder (20) and the exterior assembly (10).
With reference to Figs. 2 and 6, the multi-point latch (30) is mounted
in the sidewall of the door and the exterior assembly (10) and the interior
assembly (40) are respectively mounted on the outer side and the inner side of
the door. The latch bolts (31) can be retracted into the multi-point latch
(30)
when the rotating hole (32) is rotated with the rotating spindle (16) so as to
unlock the door.
A key can be inserted into the keyway of the cylinder (20) to lock the
door by the cylinder-transmitting panel (21) rotating the panel hole (34) in
clockwise direction to allow the dead bolt (33) moving out of the sidewall of
the multi-point latch bar (30).
The rotating spindle (16) can be rotated relative to the multi-point latch
(30) to unlock the door by pressing the press-button (12) of the exterior
assembly (10) or pressing the operating stein (421) of the operating handle
(42).
In addition, when pressing the operating stem (421) of the operating handle
(42), the motion of the linking device (44) can make the cylinder-transmitting
panel (21) rotating in a counterclockwise to allow the dead bolt (34)
retracting
into the multi-point latch (30) to unlock the door.
With reference to Figs. 2, 3, 7 and 8, when the user presses the press-
button (12) of the exterior assembly (10), the driving surface (122) on the
inner
end of the press-button (12) will abut the abutting slab (141) to push the
transmitting board (14) to move upward relative to the engaging wheel (15). As
the transmitting board (14) moves upward with the inner end of the press-
button (12), the engaging wheel (15) will rotate in a clockwise direction with
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the engagement between the rack (142) and the engaging teeth (153). Then, the
rotating spindle (16) connected to the spindle hole (151) will be rotated by
the
engaging wheel (15) to let the latch bolts (31) retract into the multi-point
latch
(30) and unlock the door. When the user releases the press-button (12), the
press-button (12) and the engaging wheel (15) can be returned to the original
position by the outside reset spring (144) pushing the transmitting board (14)
to
move back the original location.
With reference to Figs. 3, 5 and 9, during the operating process of
unlocking the door above-mentioned, the rotating spindle (16) is rotated in a
clockwise direction, the tilting plate (163) will idle in the engaging holes
(4421)
of the orientating shaft (442). Then, the driving shaft (471) will not rotate
with
the linking device (44) due to the tilting plate (163) of the rotating spindle
(16)
being rotated in the engaging holes (4421) of the orientating shaft (442).
Therefore, this can prevent the inside reset spring (47) of the interior
assembly
(40) from being pressed when the rotating spindle (16) is rotated by the press-
button (12). Consequently, useful life of the inside reset spring (31) of the
interior assembly (40) will be prolonged.
When the switch (43) is rotated in a clockwise direction at an angle of
90 as shown in Figs. 5, 9 and 10, the linking device (44) and the switch
mount
(48) will rotate with the switch (43) to allow the cylinder-transmitting panel
(21)
rotating with the switch mount (48). Then, the panel hole (34) can be rotated
with the cylinder-transmitting panel (21) to allow the dead bolt (33) to move
out of the sidewall of the multi-point latch bar (30) to lock the door. During
the
operating process of locking the door above-mentioned, the upper wheel (445)
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of the linking device (44) will rotate with the connecting board (444) by the
C-
shaped groove (4442) to pull the rail board (446) moving upward relative to
the
limiting beams (448). Then, the lower wheels (447) of the limiting beams (448)
will rotate to the lower end of the rail board (446).
With further reference to Figs. 4, 11 and 12, when pressing the
operating stem (42 1) of the operating handle (42) to resist elastic force of
the
inside reset spring (47), the driving shaft (471) will be rotated in a
clockwise
direction with the shaft hole (442) of the operating handle (42) being
securely
mounted around the square driving shaft (471). The lower rotating button (441)
will be rotated with the driving shaft (471) and the connecting beams (443)
will
be moved with the lower rotating button (441). Then, the orientating shaft
(442)
will be rotated with the movement of the connecting beams (443) and one of
the limiting beams (448) will move downward relative to the rail board (446)
and the other limiting beam (448) will move upward relative to the rail board
(446). The connecting board (444) will be rotated in a counterclockwise
direction due to the upper wheel (445) of the rail board (446) pulling the
connecting board (444). As the connecting board (444) rotates with the rail
board (446), the switch mount (48) will rotate with the connecting board (444)
in a counterclockwise direction.
When the orientating shaft (442) is rotated in a clockwise direction, the
orientating shaft (442) will rotate the tilting plate (163) by the engagement
between the engaging holes (4421) and the tilting plate (163). The latch bolts
(31) can be retracted into the multi-point latch (30) when the rotating
spindle
CA 02709057 2010-07-06
19
(16) is rotated with the tilting plate (163). In addition, the dead bolt (33)
can be
retracted into the multi-point latch (30) when the switch mount (48) is
rotated
with the switch (43) in a counterclockwise direction. Consequently, the latch
bolts (31) and the dead bolt (33) can be retracted into the multi-point latch
bar
(30) at the same time as the operating stem (421) of the operating handle (42)
is
pressed downward. Then, user can unlock the door quickly in an urgent
situation by pressing the operating stem (421) of the operating handle (42).
Even though numerous characteristics and advantages of the present
invention have been set forth in the foregoing description, together with
details
of the structure and features of the invention, the disclosure is illustrative
only.
Changes may be made in the details, especially in matters of shape, size, and
arrangement of parts within the principles of the invention to the full extent
indicated by the broad general meaning of the terms in which the appended
claims are expressed.
