Information
-
Patent Grant
-
6364383
-
Patent Number
6,364,383
-
Date Filed
Friday, September 1, 200023 years ago
-
Date Issued
Tuesday, April 2, 200222 years ago
-
Inventors
-
-
Examiners
Agents
- Kamrath; Alan
- Rider, Bennett, Egan & Arundel, LLP
-
CPC
-
US Classifications
Field of Search
US
- 292 357
- 292 3363
- 292 347
-
International Classifications
-
Abstract
A door lock includes a main body having a transmission assembly and a positioning assembly. The positioning assembly includes an inside seat and an outside seat. An inside rose liner is mounted around the inside seat. An inside rose is mounted around the inside rose liner. An anti-torque ring is mounted around the outside seat and includes two positioning posts projecting therefrom. An adjusting sleeve includes an inner threading that is engaged with the outer threading of the outside seat. A first end of the adjusting sleeve includes two diametrically opposed cutouts, thereby defining two sector wings each having two end faces. Each end face defines an end of an associated cutout. The sector wings of the adjusting sleeve is mounted into a hole of the anti-torque ring with each end face bearing against an associated end of the associated flat section of the anti-torque ring. An outside rose is securely mounted around a second end of the adjusting sleeve to rotate move therewith. Rotation of the outside rose causes longitudinal movement of the outside rose and the adjusting sleeve relative to the outside seat to suit a thickness of a door to which the door lock is mounted.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a door lock that can be installed easily and that provides a burglarproof effect for the outside rose assembly.
2. Description of the Related Art
U.S. Pat. No. 4,921,289 to Shen issued on May 1, 1990 discloses a cylindrical lever type lock structure for handicapped people and U.S. Pat. No. 4,604,879 to Neary et al. issued on Aug. 12, 1986 discloses a cylindrical lock. A common drawbacks of the locks disclosed in these two patents is that the cover ring
10
′/outside nut
24
has a loose engagement with the outside escutcheon due to poor surface contact relationship between an outer periphery of the former and an inner periphery defining a central hole of the latter. As a result, when the outside escutcheon is rotated to turn the cover ring
10
′/outside nut
24
for translating the cover ring
10
′/outside nut
24
along a longitudinal direction relative to the spindle housing
18
/outside hub
19
for adjusting the longitudinal position of the cover ring
10
′/outside nut
24
in response to the door thickness, the outside escutcheon rotates freely and thus fails to achieve the required adjusting function. A solution to solve this problem is to turn the cover ring
10
′/outside nut
24
directly, yet the human fingers are too big for the exposed portion of the cover ring
10
′/outside nut
24
such that turning of the cover ring
10
′/outside nut
24
is awkward and difficult to proceed.
Another drawback resulting from the loose engagement between the cover ring
10
′/outside nut
24
and the outside escutcheon is that the outside escutcheon tends to turn freely such that the outside escutcheon might be moved longitudinally away from the doorplate and thus has a gap therebetween. As a result, the lock can be damaged by a burglar by means of inserting a tool through the gap.
Applicant's U.S. patent application Ser. No. 09/576,332 filed on May 22, 2000, now U.S. Pat. No. 6,302,457 discloses a door lock that can be installed easily, wherein rotation of the outside rose causes longitudinal movement of the outside rose and the outside rose liner relative to the outside seat to suit a thickness of a door to which the door lock is mounted. The present invention is intended to provide an improved door lock in this regard for mitigating and/or obviating the above problems.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a door lock that can be installed easily.
It is another object of the present invention to provide a door lock for providing a burglarproof effect for the outside rose assembly.
A door lock in accordance with the present invention comprises:
a main body including a transmission assembly and a positioning assembly, the transmission assembly including an inside spindle, an outside spindle, a retractor, and a latch bolt, the positioning assembly including an inside seat and an outside seat, the outside seat including an outer threading;
an inside rose liner mounted around the inside seat;
an inside rose mounted around the inside rose liner;
an anti-torque ring mounted around the outside seat, the anti-torque ring including two positioning posts projecting therefrom and a hole;
an adjusting sleeve including an inner threading that is engaged with the outer threading of the outside seat, the adjusting sleeve including a first end and a second end, the first end of the adjusting sleeve including two diametrically opposed cutouts, thereby defining two sector wings each having two end faces, each said end face defining an end of an associated said cutout, the sector wings of the adjusting sleeve being mounted into the hole of the anti-torque ring with each said end face bearing against an associated said end of the associated flat section of the anti-torque ring;
an outside rose securely mounted around the second end of the adjusting sleeve to rotate move therewith;
an inside handle operably connected to the transmission assembly; and
an outside handle operably connected to the transmission assembly;
whereby rotation of the outside rose causes longitudinal movement of the outside rose and the adjusting sleeve relative to the outside seat to suit a thickness of a door to which the door lock is mounted.
The inside seat includes an outer threading and the inside rose liner includes a threaded inner periphery for engaging with the outer threading of the inside seat. The inside rose liner includes an outer periphery having at least one notch such that a locksmith or user may insert a tool into the notch to turn the inside loser liner. The outer periphery of the inside rose liner and the threaded inner periphery of the inside rose liner together define an intermediate portion therebetween in which a plurality of pairs of diametrically opposed positioning holes is defined. Two screws are extended through two of the positioning holes of the inside rose liner and the two positioning posts of the anti-torque ring.
The outside rose includes a central stepped portion with a central through-hole, and the central stepped portion fittingly receives the second end of the adjusting sleeve to rotate therewith. The outside seat includes an outer threading having two diametrically disposed flat surfaces. An inner periphery that defines the hole of the anti-torque ring includes two diametrically disposed flat sections. The anti-torque ring is mounted around the outside seat with the flat sections of the anti-torque ring engaged with the flat surfaces of the outside seat.
Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is an exploded perspective view of a door lock in accordance with the present invention.
FIG. 2
is an exploded perspective view of the door lock in accordance with the present invention, wherein most of the parts of the door lock have been assembled.
FIG. 3
is a sectional view of the door lock in accordance with the present invention mounted to a thin door.
FIG. 4
is a sectional view taken along line
4
—
4
in FIG.
3
.
FIG. 5
is a sectional view similar to
FIG. 3
, wherein the door lock is mounted to a thick door.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to
FIGS. 1 and 2
, a door lock in accordance with the present invention generally includes a main body
10
, an inside rose liner
42
, an anti-torque ring
44
, an inside rose
41
, an adjusting sleeve
50
, an outside rose
54
, an inner handle
40
(e.g., a lever handle), and an outside handle
55
(e.g., a lever handle). The main body
10
includes a transmission assembly
20
and a positioning assembly
30
. The transmission assembly
20
includes an inside spindle
23
, an outside spindle
24
, a retractor
21
, and a latch bolt
22
. The positioning assembly
30
includes an inside seat
31
and an outside seat
32
. The inside seat
31
includes an outer threading
312
having two diametrically disposed flat surfaces
311
. The outside seat
32
includes an outer threading
321
having diametrically disposed flat surfaces
322
.
The inside rose liner
42
includes a threaded inner periphery
424
defined by an inner flange
423
and an outer periphery
421
defined by an outer flange
421
. An annular intermediate section (not labeled) between the inner flange
423
and the outer flange
421
includes a plurality of pairs of positioning holes
425
through which two screws
43
extend. The inside rose liner
42
is mounted around the inside seat
31
with the threaded inner periphery
424
engaged with the outer threading
312
of the inside seat
31
.
The anti-torque ring
44
includes two positioning posts
45
extended outward therefrom and two diametrically disposed flat sections
442
in an inner periphery defining a hole
441
thereof. The anti-torque ring
44
is mounted around the outside seat
32
with the flat sections
442
being in contact with the flat surfaces
322
of the outside seat
32
. In addition, a screw hole
451
in each positioning post
45
is aligned with an associated positioning hole
425
in the inside rose liner
42
. The screws
43
are extended through two of the positioning holes
425
of the inside rose liner
42
and the screw holes
451
in the positioning posts
45
.
The adjusting sleeve
50
includes an inner threading
53
so as to be engaged with the outer threading
321
of the outside seat
32
. The adjusting sleeve
50
includes two diametrically opposed cutout
51
in an end thereof, thereby forming two sector wings
52
each having two end faces
511
, each end face
511
defining an end of an associated cutout
51
. The sector wings
52
of the adjusting sleeve
50
are inserted into the hole
441
of the anti-torque ring
44
with each end face
511
bearing against an associated end of the associated flat section
441
. The outside rose
54
includes a central stepped portion
541
with a central through-hole
542
. The central stepped portion
541
fittingly receives the other end of the adjusting sleeve
50
to rotate therewith.
The outside handle
55
includes an end
551
that is extended through the outside rose
54
. A lock core
552
is mounted in the end
551
of the outside handle
55
and extended into the outside spindle
24
. The inside handle
40
includes an end
401
that is extended through the inside rose
41
. When either spindle
40
or
55
is turned, the retractor
21
is moved inward to retract the latch bolt
22
away from an opening (not shown) defined in a door frame (not shown), which is conventional and therefor not further described.
Referring to
FIGS. 1 and 2
, a lock core manufactured and assembled in a factory is a status in which the anti-torque ring
44
has been mounted around the outside seat
32
and the inner threading
53
of the adjusting ring
50
is engaged with the outer threading
321
of the outside seat
32
. In addition, the end
551
of the outside handle
55
is inserted through the outside rose
54
and connected with the outside spindle
24
of the main body
10
. Referring to
FIGS. 1 through 4
, when mounting the door lock of the present invention to a thin door
56
, the anti-torque ring
44
is firstly disengaged from the adjusting ring
50
. Then, the outside rose
54
is turned, the adjusting sleeve
50
securely mounted in the outside rose
54
is also turned. By means of turning the outside rose
54
, the adjusting sleeve
50
and the outside rose
54
move longitudinally relative to the outside seat
32
due to threading engagement
321
and
53
. Thus, position of the adjusting sleeve
50
and the outside rose
54
can be adjusted to suit the thickness of the door
56
. The main body
10
is then inserted into a hole
561
in the door
56
. The positioning posts
45
of the anti-torque ring
44
are extended through positioning holes
562
in the door
56
. The sector wings
52
of the positioned adjusting sleeve
50
are located in the hole
441
of the anti-torque ring
44
. The retractor
21
is located in a center of the door thickness and thus faces the opening in the door frame. The inner rose liner
42
is then mounted to the inside seat
31
and the screws
43
are extended through the positioning holes
425
in the inside rose liner
42
and the screw holes
451
in the positioning posts
45
. Next, the inside rose
41
and the inside handle
40
are mounted to finish the assembly procedure.
FIG. 5
shows mounting of the door lock of the present invention to a thick door
57
. The installation procedure is identical to that for a thin door
56
. Thus, when mounting the door lock to a door, the locksmith or the user may simply rotate the outside rose
50
to adjust the position of the outside rose
54
and the adjusting sleeve
50
to suit the door thickness. The outside rose
54
and the outside handle
55
need not to be detached, which is quite convenient. The outer end of the adjusting sleeve
50
is shielded by the stepped portion
541
of the outside rose
54
such that finish plating is not required. The threaded inner periphery
424
of the inside rose liner
42
is threadedly engaged with the outer threading
311
of the inside seat
31
. In addition, a plurality of notches
422
is defined in the outer periphery
421
of the inside rose liner
42
such that the locksmith or user may insert a tool into the notch
422
to turn and thus move the inside rose liner
42
relative to the inside seat
31
, thereby moving the inside rose liner
42
to a place where the inside rose liner
42
is positioned.
Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.
Claims
- 1. A door lock comprising:a main body including a transmission assembly and a positioning assembly, the transmission assembly including an inside spindle, an outside spindle, a retractor, and a latch bolt, the positioning assembly including an inside seat and an outside seat, the outside seat including an outer threading; an inside rose liner mounted around the inside seat; an inside rose mounted around the inside rose liner; an anti-torque ring mounted around the outside seat, the anti-torque ring including two positioning posts projecting therefrom and a hole; an adjusting sleeve including an inner threading that is engaged with the outer threading of the outside seat, the adjusting sleeve including a first end and a second end, the first end of the adjusting sleeve including two diametrically opposed cutouts, thereby defining two sector wings each having two end faces, each said end face defining an end of an associated said cutout, the sector wings of the adjusting sleeve being mounted into the hole of the anti-torque ring with each said end face bearing against an associated said end of the associated flat section of the anti-torque ring; an outside rose securely mounted around the second end of the adjusting sleeve to rotate move therewith; an inside handle operably connected to the transmission assembly; and an outside handle operably connected to the transmission assembly; whereby rotation of the outside rose causes longitudinal movement of the outside rose and the adjusting sleeve relative to the outside seat to suit a thickness of a door to which the door lock is mounted.
- 2. The door lock as claimed in claim 1, wherein the inside seat includes an outer threading, the inside rose liner including a threaded inner periphery for engaging with the outer threading of the inside seat.
- 3. The door lock as claimed in claim 2, wherein the inside rose liner includes an outer periphery having at least one notch.
- 4. The door lock as claimed in claim 3, wherein the outer periphery of the inside rose liner and the threaded inner periphery of the inside rose liner together define an intermediate portion therebetween in which a plurality of pairs of diametrically opposed positioning holes is defined, and wherein two screws are extended through two of the positioning holes of the inside rose liner and the two positioning posts of the anti-torque ring.
- 5. The door lock as claimed in claim 1, wherein the outside rose includes a central stepped portion with a central through-hole, and wherein the central stepped portion fittingly receives the second end of the adjusting sleeve to rotate therewith.
- 6. The door lock as claimed in claim 1, wherein the outside seat includes an outer threading having two diametrically disposed flat surfaces, an inner periphery that defines the hole of the anti-torque ring including two diametrically disposed flat sections, the anti-torque ring being mounted around the outside seat with the flat sections of the anti-torque ring engaged with the flat surfaces of the outside seat.
US Referenced Citations (4)