Information
-
Patent Grant
-
6516641
-
Patent Number
6,516,641
-
Date Filed
Thursday, June 27, 200222 years ago
-
Date Issued
Tuesday, February 11, 200321 years ago
-
Inventors
-
Original Assignees
-
Examiners
- Knight; Anthony
- Walsh; John B.
Agents
-
CPC
-
US Classifications
Field of Search
US
- 070 213
- 070 219
- 070 298
- 070 284
- 070 285
- 292 3363
- 292 DIG 30
- 292 DIG 31
-
International Classifications
-
Abstract
A handle assembly of thin type permits through a computerized personal management system a plurality of persons to have easily access to instruments in a box with the handle assembly in which: a combination lock (6); opened by turning each of its dial discs (4) a given number of times to establish a combination of marks of the discs, is incorporated in a handle (2) and disposed adjacent to a cylinder lock (2) in the handle; and, a plate (11), interlocked with a rotor (8) of the lock (2), engages with a shoulder (15) of a lever (16) pivoted to a body (1), so that the handle is held in its folded position. When the lock (6) is held in its unlocked condition and the handle (2) is pulled, the lever (16) is swung upward by the plate (11) to release the handle (2) from the body (1).
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a door locking handle assembly with a built-in combination lock of a pull-out and side-swinging lever-action type, in which a door handle is pivoted to a base body of the assembly so as to be pulled out forward and pushed back rearward relative to the base body and turned on its pivoted end.
2. Description of the Related Art
As is well known in the art, a door locking handle assembly of a conventional type shown in U.S. Pat. No. 5,467,623, herein incorporated by reference, has a construction in which: a base body of the assembly is fixedly mounted on a door of a box or container; a door handle is pivoted to the base body so as to be pulled out forward and pushed back rearward relative to the base body and further turned sideward on its pivoted end after completion of its pulling-out operation; when the door handle is pulled out of the base body to assume its pulled-up or raised inclination position relative to the base body and turned sideward after completion of its pulling-out operation, a catch plate (i.e., locking member) which serves as a door bolt directly or indirectly connected with the door handle is released from a receiving portion of a stationary frame element (i.e., door frame) of the box or container. In this type of conventional door locking handle assembly, a cylinder lock is incorporated in either the door handle or the base body. On the other hand, the door handle is pushed back rearward relative to the base body and held in its folded position or locked position in the base body.
In the conventional door locking handle assembly having the above construction, an available space for mounting the assembly is extremely limited in each of opposite sides of the door to which the assembly is fixedly mounted because the interior space of the box or container for housing various instruments therein is relatively limited due to the presence of the instruments housed in the box or container. Due to this, it is necessary to considerably limit in size the projections of the assembly in opposite directions perpendicular to the plane of the door's surface.
In order to fulfill the above need, it is necessary to reduce in thickness the assembly as a whole by reducing in thickness the door handle and in depth the base body. However, this forces the cylinder lock of the assembly to be considerably reduced in thickness.
On the other hand, in such a thin-type cylinder lock, since the number of sets of disc tumblers and/or pin tumblers incorporated in the cylinder lock as essential components of its internal lock mechanism is small, the number of available keys of such a thin-type cylinder lock is naturally limited. Due to this, in the case where there are a large number of eligible users or persons using the instruments contained in the box which is provided with the door locking handle assembly employing the cylinder lock in a condition in which these users or persons are controlled by a control operator through a computerized personal management system, it is difficult to use the conventional door locking handle assembly which employs the thin-type cylinder lock.
Although the conventional door locking handle assembly described above has been fully appreciated by users, a need exists in the art for an improved one of such door locking handle assembly, which is improved in capacity and performance.
SUMMARY OF THE INVENTION
Under such circumstances, the present invention was made. Consequently, it is an object of the present invention to provide a door locking handle assembly with a built-in combination lock, which assembly is thin in thickness as a whole and capable of providing a very large number of available keys for the combination lock, wherein a large number of eligible persons or users of various instruments contained in a box or container provided with the door locking handle assembly are precisely controlled by a control operator through a computerized personal management system.
It is possible to accomplish the above object of the present invention by providing:
In a door locking handle assembly with a built-in combination lock (
6
), the assembly being provided with a base body (
1
) which is fixedly mounted on a door (
30
) of a box, wherein a door handle (
2
) is pivoted to the base body (
1
) so as to be capable of being pulled out forward and pushed back rearward relative to the base body (
1
) and also turned sideward on a locking shaft (
29
) after completion of its pulling-out operation, wherein a locking member (
3
) serving as a door bolt for locking the door (
30
) to a main body of the box is directly or indirectly connected with the door handle (
2
) so as to be engaged with and disengaged from a receiving portion of a stationary frame element such as the main body of the box when the door handle (
2
) is pulled out forward and then turned sideward on the locking shaft (
29
) after completion of the pulling-out operation of the door handle (
2
), the improvement wherein:
the combination lock (
6
), which is provided with a plurality of marked dial discs (
4
), is incorporated in the door handle (
2
) and opened by turning each of the marked is dial discs (
4
) a given number of times to establish a predetermined combination of marks provided in outer peripheral surfaces of the dial discs (
4
);
the combination lock (
6
) is held in its locked condition when the predetermined combination of marks of the dial discs (
4
) is not established;
a cylinder lock (
13
) is incorporated in the door handle (
2
) and disposed adjacent to the combination lock (
6
) in a longitudinal direction of the door handle (
2
), wherein the cylinder lock (
13
) is provided with a rotor (
8
);
when an eligible key (
7
) is inserted into a keyhole (
9
) of the rotor (
8
) of the cylinder lock (
13
), the cylinder lock (
13
) has its internal lock mechanism (
10
) unlocked to permit the rotor (
8
) to be turned by the key (
7
) thus inserted into the keyhole (
9
) of the rotor (
8
);
when the rotor (
8
) is turned, a stopper plate (
11
) which is slidably received in a side through-hole (
12
) of the door handle (
2
) is driven in a manner such that the stopping plate (
11
) is projected outward from the side through-hole (
12
) and retracted from the outside of the door handle (
2
);
the stopping plate (
11
) has its upper end portion (
14
) abut against a shoulder portion (
15
) of a lower surface of a proximal end portion of a receiver lever (
16
);
the receiver lever (
16
) has its proximal end portion pivoted to an inner wall portion of the base body (
1
) through a first pivot (
17
);
the shoulder portion (
15
) of the receiver lever (
16
) is provided with a cam slope (
18
) through which the receiver lever (
16
) is pushed upward by the upper end portion of the stopper plate (
11
);
the receiver lever (
16
) is rotatably urged toward the stopping plate (
11
) by means of a first spring member (
19
);
a slider (
21
) is disposed in parallel with a center pin (
20
) of the combination lock (
6
), and urged toward the cylinder lock (
13
) by means of a second spring member (
22
) in a manner such that a lower end portion (
23
) of the slider (
21
) abuts against an upper surface of the receiver lever (
16
), so that the slider (
21
) has its restriction portion (
26
) engaged with and disengaged from a locking end portion (
25
) of the lock plate (
5
) when the lock plate (
5
) is held in its locked position and its unlocked position, respectively;
when the lock plate (
5
) is held in its unlocked position, the door handle (
2
) is capable of being pulled forward out of the base body (
1
);
when the door handle (
2
) is thus pulled out forward, the stopping plate (
11
) pushes the cam slope (
18
) of the receiver lever (
16
) swingably upward so that the receiver lever (
16
) is moved to its unlocked position; and
when the lock plate (
5
) is held in its locked position, the lock plate (
5
) has its locking end portion (
25
) engaged with the restriction portion (
26
) of the slider (
21
) to prevent the receiver lever (
16
) from turning on the first pivot (
17
).
BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects, advantages and features of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings in which:
FIG. 1
is a front view of an embodiment of the door locking handle assembly of the present invention;
FIG. 2
is a right side view of the door locking handle assembly shown in
FIG. 1
;
FIG. 3
is a rear view of the door locking handle assembly shown in
FIG. 1
;
FIG. 4
is a schematic longitudinal sectional view of the door locking handle assembly shown in
FIG. 1
, illustrating a predetermined unique combination of the marks of the dial discs of the combination lock;
FIG. 5
is a schematic longitudinal sectional view of the door locking handle assembly shown in
FIG. 4
, illustrating the door handle having been slightly pulled out of the base body in a swing manner;
FIG. 6
is a schematic longitudinal sectional view of the door locking handle assembly shown in
FIG. 4
, illustrating the door handle further apart from the base body than in
FIG. 5
;
FIG. 7
is a schematic longitudinal sectional view of the door locking handle assembly shown in
FIG. 4
, illustrating the door handle still further apart from the base body than in
FIG. 6
;
FIG. 8
is a schematic longitudinal sectional view of the door locking handle assembly in a condition in which the unique combination of the marks of the dial discs is not established;
FIG. 9
is a schematic longitudinal sectional view of the door locking handle assembly show in
FIG. 8
, illustrates the door handle prevented from being pulled out of the base body even when an external force for pulling the door handle out of the base body is applied to the door handle;
FIG. 10
is a schematic longitudinal sectional view of the door locking handle assembly shown in
FIG. 8
, illustrating the key inserted into the cylinder lock for rearrangement or resetting of the dial discs when these dial discs are improperly arranged;
FIG. 11
is a schematic longitudinal sectional view of the door locking handle assembly shown in
FIG. 10
, illustrating the door handle slightly pulled out of the base body;
FIG. 12
is a schematic longitudinal sectional view of the door locking handle assembly shown in
FIG. 10
, illustrating the door handle further apart from the base body than in
FIG. 11
;
FIG. 13
is a front view of the built-in combination lock of the door locking handle assembly shown in
FIG. 1
, illustrating the dial discs the marks of which are not shown together with the positioning grooves of these marks;
FIG. 14
is a cross-sectional view of combination lock, taken along the line A—A of
FIG. 2
;
FIG. 15
is a cross-sectional view of combination lock, taken along the line B—B of
FIG. 2
;
FIG. 16
is a cross-sectional view of combination lock, taken along the line C—C of
FIG. 2
;
FIG. 17
is a cross-sectional view of combination lock, taken along the line D—D of
FIG. 2
;
FIG. 18
is a plan view of the dial disc employed in the combination lock shown in FIG.
2
.
FIG. 19
is a longitudinal sectional view of the dial disc, taken along the line E—E of
FIG. 18
;
FIG. 20
is a bottom view of the cam disc employed in the combination lock shown in
FIG. 2
;
FIG. 21
is a rear view of the cam disc shown in
FIG. 20
;
FIG. 22
is a longitudinal sectional view of the cam disc, taken along the line F—F of
FIG. 20
;
FIG. 23
is a longitudinal section view of the combination lock, taken along the line G—G of
FIG. 14
; and
FIG. 24
is a longitudinal sectional view of the combination lock, taken along the line H—H of FIG.
2
.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The best modes for carrying out the present invention will be described in detail using embodiments of the present invention with reference to the accompanying drawings.
As shown in
FIGS. 1
to
4
, an embodiment of a door locking handle assembly with a built-in combination lock
6
according to the present invention is provided with a base body
1
. As is clear from
FIG. 4
, the base body
1
is fixedly mounted on a door
30
(shown in dotted lines in
FIG. 4
) of a box or container(not shown).
On the other hand, a door handle
2
is pivoted to the base body
1
so as to be capable of being pulled out forward and pushed back rearward relative to the base body
1
and also turned sideward on a locking shaft
29
after completion of its pulling-out operation. In this turning operation of the door handle
2
, a locking member
3
(shown in
FIG. 3
) serves as a door bolt for locking the door
30
to a main boy of the box, and is directly or indirectly connected with the door handle
2
so as to be engaged with and disengaged from a receiving portion of a stationary frame element such as the main body of the box (not shown) when the door handle
2
is pulled out forward and turned sideward on the locking shaft
29
after completion of the pulling-out operation of the door handle
2
.
In such a door locking handle assembly having the above construction, the combination lock
6
is provided with a plurality of marked dial discs
4
, incorporated in the door handle
2
and opened by turning each of the marked dial discs
4
a given number of times to establish a predetermined unique combination of marks provided in outer peripheral surfaces of the dial discs
4
.
The combination lock
6
is held in its locked condition when the predetermined combination of marks of the dial discs
4
is not established.
The door locking handle assembly is further provided with a cylinder lock
13
. This cylinder lock
13
is incorporated in the door handle
2
so as to be disposed adjacent to the combination lock
6
in a longitudinal direction of the door handle
2
, and is provided with a rotor
8
.
As shown in
FIG. 10
, when an eligible key
7
is inserted into a keyhole
9
(shown in
FIG. 1
) of the rotor
8
in the cylinder lock
13
, the lock
13
has its internal lock mechanism
10
unlocked to permit the rotor
8
to be turned by the key
7
thus inserted into the keyhole
9
thereof. When the rotor
8
is turned, a stopping plate
11
which is slidably received in a side through-hole
12
of the door handle
2
is driven in a manner such that the stopping plate
11
is projected outward from the side through-hole
12
and retracted from the outside of the door handle
2
.
As shown in
FIG. 4
, the stopping plate
11
has its upper end portion abut against a shoulder portion
15
of a lower surface of a proximal end portion of a receiver lever
16
. This lever
16
has its proximal end portion pivoted to an inner wall portion of the base body
1
through a first pivot
17
. On the other hand, the shoulder portion
15
of the receiver lever
16
is provided with a cam slope
18
through which the receiver lever
16
is pushed upward by the upper end portion of the stopper plate
11
when the door handle
2
is pulled forward. Further, the receiver lever
16
is rotatably urged downward toward the stopper plate
11
by means of a first spring member
19
, as shown in FIG.
4
.
As best shown in
FIGS. 23 and 24
, a slider
21
is disposed in parallel with a center pin
20
of the combination lock
6
, and urged downward toward the cylinder lock
13
by means of a second spring member
22
(shown in
FIG. 23
) in a manner such that a lower end portion of the slider
21
abuts against an upper surface of the receiver lever
16
(see, FIG.
5
). As a result, the slider
21
has its restriction portion
26
engaged with and disengaged from a locking end portion
25
of the lock plate
5
when the lock plate
5
is held in its locked position and its unlocked position, respectively.
More specifically, when the lock plate
5
is held in its unlocked position, it is possible to pull the door handle
2
forward out of the base body
1
. As shown in
FIG. 5
, when the door handle
2
is thus pulled forward, the stopper plate
11
pushes the cam slope
18
of the receiver lever
16
swingably upward so that the receiver lever
16
is moved to its unlocked position. On the other hand, as shown in
FIG. 8
, when the lock plate
5
is held in its locked position, the lock plate
5
has its locking end portion
25
engaged with the restriction portion
26
of the slider
21
to prevent the receiver lever
16
from turning on the first pivot
17
.
In the door locking handle assembly of the present invention having the above construction, a control operator of the instruments housed in the box is capable of allocating to each of a large number of eligible users or persons such a predetermined unique combination of marks of the marked dial discs
4
of the combination lock
6
for unlocking and locking the combination lock
6
.
Each of the eligible users or persons is capable of unlocking the combination lock
6
of the door locking handle assembly by turning in a normal or a reverse direction each of the marked dial discs
4
a given number of times to establish the unique combination of the marks, which combination has been allocated to each of the eligible users or persons, wherein the marks are provided in an outer peripheral surface of each of the dial discs
4
.
Once such a predetermined unique combination of the marks is established, as shown in
FIG. 4
, the combination lock
6
is unlocked and therefore capable of moving to its unlocking position. In such an unlocked condition of the combination lock
6
, as shown in
FIGS. 14 and 15
, the locking end portion
25
of the lock plate
5
is in a predetermined advanced position in which: the locking end portion
25
of the lock plate
5
is released from the restriction portion
26
of the slider
21
; and, the slider
21
is capable of moving upward as viewed in FIG.
4
. At this time, the cylinder lock
13
is in its locked condition, so that the upper end portion
14
of the stopping plate
11
is engaged with the shoulder portion
15
of the receiver lever
16
under the influence of a resilient force exerted by the first spring member
19
. As a result, the door handle
2
is held in its folded position inside a front concave portion
27
of the base body
1
.
Under such circumstances, when the door handle
2
is forcibly pulled forward out of the base body
1
, as shown in
FIG. 5
, the door handle
2
is turned on a second pivot
28
. As a result, the upper end portion
14
of the stopping plate
11
pushes swingably up the cam slope
18
of the shoulder portion
15
of the receiver lever
16
. Due to such pushing operation of the stopping plate
11
, the receiver lever
16
is turned on the first pivot
17
to unlock the door handle
2
. At the same time, the receiver lever
16
pushes up a lower end portion
23
of the slider
21
so that the slider
21
is retracted upward from its lower extended position.
At a stage in which the door handle
2
is swingably pulled out of the base body
1
to reach a predetermined angular position thereof, the receiver lever
16
is released from a pushing force exerted by the upper end portion
14
of the stopping plate
11
. Due to this, as is clear from
FIG. 7
, the receiver lever
16
swingably returns to its initial rest position under the influence of a resilient force exerted by the first spring member
19
. At this time, the slider
21
also returns downward to its initial lower position under the influence of a resilient force exerted by the second spring member
22
(shown in FIG.
23
).
When the door handle
2
, which is in its raised position, is turned sideward on the locking shaft
29
, the locking member
3
which is directly or indirectly connected with the door handle
2
is released from the receiving portion (not shown) of the stationary frame element or main body of the box. This permits the door
30
(shown in dotted lines in
FIG. 4
) to be released from the above-mentioned receiving portion of the main body of the box. Consequently, any eligible person or user is capable of opening the door
30
by simply pulling the door handle
2
forward relative to the base body
1
.
When the predetermined unique combination of the marks of the dial discs
4
is not established by rotating each of the dial discs
4
, the lock plate
5
rotates in the direction of the arrow as shown in
FIG. 14
to lock the combination lock
6
. Due to this, the lock plate
5
has its locking end portion
25
abut against the restriction portion of the slider
21
to prevent the receiver lever
16
from turning upward on the first pivot
17
toward its escape position.
In this locked condition of the combination lock
6
, when the door handle
2
is forcibly pulled forward out of the base body
1
, as shown in
FIG. 9
, the door handle
2
is very slightly pulled forward relative to the base body
1
to have immediately the upper end portion
14
of the stopping plate
11
abut against the cam slope
18
of the receiving lever
16
, so that such a forcible forward pulling operation of the door handle
2
is inhibited by the stopping plate
11
.
For example, the control operator of the instruments housed in the box, who allocates to each of the users or persons the predetermined unique combination of marks of the dial discs
4
, has a broader control power than does each of the users or persons. Consequently, the control operator is capable of pulling forward and turning sideward the door handle
2
to open the door
30
without using the combination of the marks of the dial discs
4
. Furthermore, the control operator is authorized to have the eligible key
7
of the cylinder lock
13
.
As shown in
FIG. 10
, when an illegal person, who is not authorized to use the box closed with the door
30
, illegally operates or turn each of the dial discs
4
of the combination lock
6
to lock the combination lock
6
by accident, it is possible for the control operator to reset the combination lock
6
thus accidentally locked by the illegal person.
In a preliminary stage of the above-mentioned setting operation of the combination lock
6
, the control operator inserts the key
7
into the keyhole
9
(shown in
FIG. 1
) of the rotor
8
in the cylinder lock
13
to unlock the internal lock mechanism
10
of the cylinder lock
13
by using a predetermined coded key ridge portion of the key
7
. This makes it possible for the rotor
8
of the cylinder lock
13
to rotate on its longitudinal center axis. When the key
7
thus inserted into the keyhole
9
of the rotor
8
is turned in the unlocking direction of the cylinder lock
13
, the stopping plate
11
having been projected from the side through-hole
12
of the door handle
2
is retracted from the outside of the door handle
2
to be entirely received inside the side through-hole
12
, so that the upper end portion
14
of the stopping plate
11
is disengaged from the shoulder portion
15
of the receiver lever
16
.
As described above, in the locking condition of the combination lock
6
, since the locking end portion
25
of the lock plate
5
is in a position in which the locking end portion
25
abuts against the restriction portion
26
of the slider
21
, the slider
21
is prevented from moving upward by means of the lock plate
5
. As a result, the receiver lever
16
is prevented from turning on the first pivot
17
in its unlocking direction.
On the other hand, when the cylinder lock
13
is unlocked using the key
7
, the stopping plate
11
is entirely retracted from the outside of the door handle
2
. Therefore, there is no fear that the stopping plate
11
hits the receiver lever
16
. Due to this, as is clear from
FIGS. 11 and 12
, it is possible to pull the door handle
2
forward out of the front concave portion
27
of the base body
1
without any interference between the door handle
2
and the receiver lever
16
.
After the door
30
of the box (not shown) is opened, an appropriate reset means such as a reset lever
63
(shown in
FIG. 24
) is operated from behind the thus opened door
30
so that the combination lock
6
is released from such an accidental locking condition.
In the embodiment shown in the drawings, as is clear from
FIG. 4
, a bearing hole
31
is formed in an upper portion of the base body
1
to extend in a direction perpendicular to the plane of the front surface of the door
30
. Rotatably received in such a bearing hole
31
of the base body
1
in an insertion manner is a locking shaft
29
which is not axially slidable in the bearing hole
31
. The locking shaft
29
is provided with a square-column portion
29
a
in its rear end portion. As shown in
FIG. 2
, all the locking member
3
, a swing-angle limiting plate
71
and a washer
72
are mounted on the rear end square-column portion
29
a
of the locking shaft
29
in an insertion manner. Then, a bolt
32
is threadably connected with a threaded hole (not shown) of a rear end surface of the square-column portion
29
a
of the locking shaft
29
, and then tightened in the threaded hole of the locking shaft
29
, so that the locking member
3
and the swing-angle limiting plate
71
are fixed to the square-column portion
29
a
of the locking shaft
29
through the washer
72
. The base body
1
is mounted in an elongated front receiving hole
33
of the door
30
from the front side of the door
30
in an insertion manner. On the other hand, a mounting plate
34
assuming a U-shaped form in cross section is mounted on a rear surface of the door
30
to mate with the base body
1
, and then fixed to the door
30
by means of a suitable fastening means such as a screw
35
or the like, as shown in
FIGS. 2 and 3
.
As shown in
FIG. 4
, formed in an upper rear portion of the door handle
2
is a concave portion
36
. This concave portion
36
assumes a substantially fan-like shape in longitudinal section to swingably receive therein a front end portion of the locking shaft
29
. More specifically, the door handle
2
had its upper end portion corresponding to its concave portion
36
pivoted to the front end portion of the locking shaft
29
through a second pivot or cross pivot
28
. This cross pivot
28
extends in parallel with a front surface of the door
30
in a direction perpendicular to the longitudinal axis of the door handle
2
. In operation, when the door handle
2
is folded down so as to be embedded in the base body
1
, it is possible for the front concave portion
27
of the base body
1
to receive therein a rear portion of an essential part of the door handle
2
. As shown in
FIG. 3
, formed in a lower end portion of the door handle
2
is a flange serving as a fingertip engaging edge portion
37
, which bulges out downward in the longitudinal direction of the door handle
2
. As is clear from
FIG. 4
, even when the door handle
2
is in its folded position, the fingertip engaging edge portion
37
of the door handle
2
is still spaced apart forward from a front surface of the corresponding lower portion of the base body
1
, which enables the person or user to pick up the lower free end portion of the door handle
2
in an easy manner.
On the other hand, when the door handle
2
is in its raised position in which the door handle
2
is inclined forward as viewed in
FIG. 7
, it is possible for the user or person to swing sideward or turn the door handle
2
on the locking shaft
29
together with this locking shaft
29
relative to the base body
1
.
Formed in an intermediate portion of the door handle
2
to extend in the longitudinal direction of the door handle
2
is an elongated hollow portion
38
for receiving therein a combination lock
6
. The hollow portion
38
of the door handle
2
is open at the rear side of the door handle
2
to form an opening which is covered by a back plate member
39
, as shown in FIG.
7
.
As is clear from
FIGS. 13
to
24
, the combination lock
6
is constructed of a plurality of its components. Essential ones of these components of the combination lock
6
are: a plurality of the marked dial discs
4
; a plurality of cam discs
41
, each of which has a part thereof inserted into a center through-hole of the dial disc
4
and stacked together into a neat pile; the center pin
20
, which assumes the same shape as that of a round bar and inserted into a center hole
42
of each of the cam discs
41
; a compression coil spring
43
for urging downward such a neat pile consisting of both the dial discs
4
and the cam discs
41
toward the cylinder lock
13
; and, the lock plate
5
, which is provided with a rectangular opening portion
44
(shown in
FIG. 16
) to receive therein a part of each of the dial discs
4
.
As shown in
FIGS. 17
to
19
, the center through-hole
40
(shown in
FIG. 19
) of the dial disc
4
is constructed of: a small-diameter bore portion
40
a
; and, a pair of large-diameter bore portions
40
b
and
40
c
, sandwiched in between which is the small-diameter bore portion
40
a
. In a normal condition, under the influence of a resilient force exerted by the compression coil spring
43
, a small-diameter sleeve portion
41
a
of the cam disc
41
, which is inserted into the small-diameter bore portion
40
a
of the dial disc
4
from above, projects downward from the lower large-diameter bore portion
40
c
of the dial disc
4
, as is clear from
FIG. 24
, so that a large-diameter flange portion
41
b
of the cam disc
41
is received in the upper large-diameter bore portion
40
b
of the dial disc
4
. At the same time, the large-diameter flange portion
41
b
has its upper end surface abut against a lower end surface of the small-diameter sleeve portion
41
a
of the upper adjacent cam disc
41
. As is clear from
FIG. 1
, a part of the peripheral portion of the dial disc
4
projects forward through a laterally elongated slot
68
formed in a front surface of the door handle
2
.
As shown in
FIGS. 20
to
22
, formed in a peripheral surface of a root portion of the small-diameter sleeve portion
41
a of the cam disc
41
are a pair of diametrically opposed projection groups, each of which groups contains three piece of equally-spaced interlocking projections
45
. On the other hand, as is clear from
FIG. 16
, formed in an inner peripheral surface of the small-diameter bore portion
40
a
of the dial disc
4
are ten piece of equally-spaced interlocking grooves
46
which corresponds in number to the marks “1” to “10” provided in the outer peripheral surface of the dial disc
4
. The dial disc
4
and the corresponding cam disc
41
are combined with each other through engagements established between the interlocking projections
45
of the cam disc
41
and the corresponding interlocking grooves
46
of the dial disc
4
, as shown in FIG.
16
.
In order to change the combination of the marks of the dial discs
4
in the combination lock
6
, it is necessary to slide or displace the cam disc
41
upward by a distance equal to an axial length of the interlocking groove
46
. Such an axial displacement of the cam disc
41
relative to the adjacent one of the dial discs
4
makes it possible for the cam disc
41
to have its interlocking projections
45
disengaged from the corresponding interlocking grooves
46
of the dial disc
4
. After that, the cam disc
41
is rotated on its center axis relative to the dial disc
4
by a predetermined angle which is equal to an integral multiple of the interval between adjacent ones of the interlocking grooves
46
. Then, the thus rotated cam disc
41
is returned or displaced downward to its initial level or height. As a result, the combination of marks of the dial disc
4
is changed to a new unique combination of the marks in the combination lock
6
.
As is clear from
FIG. 20
, an outer peripheral portion of the large-diameter flange portion
41
b
of the cam disc
41
is partially cut off to form a pair of V-shaped notch portions
47
which are adjacent to each other to form a large-angle notch in appearance. As is clear from
FIG. 17
, the lock plate
5
is provided with a pair of V-shaped receiving grooves
48
in cross section. As shown in
FIG. 13
, these grooves
48
of the lock plate
5
are formed in a bridge portion between adjacent ones of the rectangular opening portions
44
of the lock plate
5
and correspond, in position and contour, to the V-shaped notch portions
47
of the cam disc
41
. When the V-shaped notch portions
47
of the cam disc
41
engage with the rectangular opening portions
44
of the lock plate
5
, the lock plate
5
is in a position in which the locking end portion
25
of the lock plate
5
is free from the restriction portion
26
of the slider
21
, as shown in FIG.
15
. When the V-shaped notch portions
47
of the cam disc
41
are disengaged from the rectangular opening portions
44
of the lock plate
5
, a crest portion of the lock plate
48
in cross section between its V-shaped receiving grooves
48
abuts against the circular outer peripheral surface of the large-diameter flange portion
41
b
of the cam disc
41
. This permits the lock plate
5
to rotate on its center axis to one of its angular positions, in which one the locking end portion
25
of the lock plate
5
abuts against is the restriction portion
26
of the slider
21
.
As shown in
FIG. 13
, an upper support projection
49
a
and a lower support projection
49
b
are formed in an upper end portion and a lower end portion of the lock plate
5
, respectively. Further, as is clear from
FIG. 13
, the lock plate
5
has its support projections
49
a
,
49
b
oppositely disposed from its locking end portion
25
. The upper support projection
49
a
is supported by an upright wall plate portion
50
of the back plate member
39
. On the other hand, the lower support projection
49
b
is supported in a through-hole
52
(shown in dotted lines in
FIG. 13
) of a partition wall plate
51
which is fixedly mounted on the back plate member
39
. As shown in
FIG. 15
, the lock plate
5
is resiliently urged forward by means of a compression coil spring
53
to prevent its locking end portion
25
from abutting against the restriction portion
26
of the slider
21
.
As shown in
FIG. 24
, the center pin
20
of the combination lock
6
has its upper and its lower end portion inserted into an upper pin hole
54
and a lower pin hole
55
, respectively, wherein: the upper pin hole
54
is formed in the upright wall plate portion
50
of the back plate member
39
; and, the lower pin hole
55
is formed in the partition wall plate
51
. On the other hand, the compression coil spring
43
for urging downward both the dial discs
4
and the cam discs
41
is loosely mounted on the upper end portion of the center pin
20
and compressed between the uppermost one of the cam discs
41
and the upright wall plate portion
50
, as is clear from FIG.
24
.
The slider
21
is constructed of a plate member and capable of sliding along the back plate
39
. As is clear from
FIGS. 16 and 23
, a plurality of inner guide projections
56
are formed in both a main body and a pair of opposite side portions of the back plate
39
to extend inside the back plate
39
to slidably guide the slider
21
. Also formed in the back plate
39
is a first spring support projection
57
, which cooperates with a second spring support projection
59
of the slider
21
to support the compression coil spring or second spring member
22
therebetween. The second spring member
22
is used to urge the slider
21
downward toward the receiver lever
16
. Further, as shown in
FIG. 23
, the slider
21
is provided with a guide groove
58
which receives therein the guide projection
56
of the back plate
39
.
As shown in
FIG. 4
, the first pivot
17
of the receiver lever
16
extends in parallel with the front surface of the door
30
. On the other hand, the slider
21
is provided with an escape opening
60
for preventing both the compression coil spring
53
and the partition wall plate
51
from interfering with the slider
21
in operation. As is clear from
FIG. 23
, an L-shaped opening
61
is formed in the back plate
39
oppositely disposed from the slider
21
.
As shown in
FIG. 24
, the center pin
20
of the combination lock
6
is provided with a flange portion
20
a
which abuts against the lowermost one of the cam discs
41
. The reset lever
62
has its proximal end ring portion
63
rotatably mounted on the center pin
20
in a position between the flange portion
20
a
and the partition wall plate
51
. On the other hand, in a normal condition, a grip portion
64
of the reset lever
62
passes through a vertical portion
61
a
of the L-shaped opening
61
of the back plate
39
, as shown in
FIGS. 23 and 24
.
In order to perform the resetting operation or the changing operation of the combination of the marks of the dial discs
4
in the combination lock
6
, it is necessary for the user to grip and push upward the grip portion
64
of the reset lever
62
. As is clear from
FIG. 24
, the grip portion
64
of the reset lever
62
projects rearward beyond the back plate
39
through its L-shaped opening
61
to facilitate such a pushing-up operation of the reset lever
62
. When the reset lever
62
thus pushed up, the pile of the cam discs
41
is pushed up toward the locking shaft
29
in a manner such that the interlocking projections
45
of the cam discs
41
are disengaged from the corresponding interlocking grooves
46
of the dial discs
4
. In order to keep the pile of the cam discs
41
in their pushed-up position, it is necessary for the user to slightly tilt the reset lever
62
in a manner such that the grip portion
64
of the reset lever
62
is engaged with a lateral portion
61
b
of the L-shaped opening
61
.
After turning each of the dial discs
4
in a normal or a reverse direction a desired number of times, the cam discs
41
have their interlocking projections
45
engaged with the corresponding interlocking grooves
46
of the dial discs
4
to determine a new combination of the marks of the dial discs
4
, wherein such a new combination differs from the previous combination of the marks of the dial discs
4
.
In the outer peripheral surface of each of the cam discs
41
, there are formed a plurality of positioning grooves
65
at predetermined intervals. The number of these positioning grooves
65
of the cam disc
41
is the same as that of the marks of the dial disc
4
. On the other hand, as shown in
FIG. 17
, a third spring member
66
for keeping the dial discs
4
in their desired angular positions is fixedly mounted on the side wall portion of the back plate member
39
in a manner such that the third spring member
66
has its front end projections
67
resiliently engaged with the corresponding positioning grooves
65
of the cam discs
41
.
As the internal lock mechanism
10
of the cylinder lock
13
, there is used a conventional disc tumbler lock mechanism in which: as shown in
FIG. 4
, an eccentric cam projection
69
formed in a rear end surface of the rotor
8
of the cylinder lock
13
is slidably received in a laterally elongated slot
70
formed in the proximal end portion of the stopping plate
11
.
As an example of the internal lock mechanism
10
, there is a pin tumbler lock mechanism or the like which is capable of being employed in the door locking handle assembly of the present invention.
In the door locking handle assembly of the present invention having the above construction: when the predetermined combination of the marks of the dial discs
4
of the combination lock
6
is established, the combination lock
6
is unlocked; the cylinder lock
13
is unlocked using the key
7
; the combination lock
6
is incorporated in the door handle
2
together with the cylinder lock
13
in a manner such that these locks
6
,
13
are disposed adjacent to each other in the longitudinal direction of the door handle
2
; the receiver lever
16
pivoted to the base body
1
is controlled in motion by means of the lock plate
5
; the stopper plate
11
which is engaged with and disengaged from the receiver lever
16
is mechanically interlocked with the rotor
8
of the cylinder lock
13
to make it possible to lock and unlock the door handle
2
to and from the base body
1
, so that it is possible for the present invention to downsize the door locking handle assembly in thickness as a whole in a condition in which a large number of eligible keys
7
are provided in an easy manner; and, it is possible for the control operator of the various instruments contained in the box or container to control a large number of the users or persons in various control modes through the computerized personal management system without fail.
Further, in the door locking handle assembly of the present invention having the above construction, it is possible to prevent the receiver lever
16
from turning or moving toward its unlocked position by simply having the upper end portion
14
of the stopping plate
11
abut against the cam slope
18
of the receiver lever
16
. Due to this, in the door locking handle assembly of the present invention, there is no need for a separate drive mechanism for driving the receiver lever
16
. This makes it possible to reduce the number of the components or parts of the door locking handle assembly and therefore possible to simplify the assembly in construction.
While the present invention has been particularly shown and described with reference to the preferred embodiments and a modification thereof, it will be understood by those skilled in the art that various modifications and changes may be made therein without departing from the spirit of the present invention as defined by the appended claims.
Claims
- 1. In a door locking handle assembly with a built-in combination lock (6), the assembly being provided with a base body (1) which is fixedly mounted on a door (30) of a box, wherein a door handle (2) is pivoted to said base body (1) so as to be capable of being pulled out forward and pushed back rearward relative to said base body (1) and also turned sideward on a locking shaft (29) after completion of its pulling-out operation, wherein a locking member (3) serving as a door bolt for locking said door (30) to a main body of said box is directly or indirectly connected with said door handle (2) so as to be engaged with and disengaged from a receiving portion of a stationary frame element such as said main body of said box when said door handle (2) is pulled out forward and then turned sideward on said locking shaft (29) after completion of the pulling-out operation of said door handle (2), the improvement wherein:said combination lock (6), which is provided with a plurality of marked dial discs (4), is incorporated in said door handle (2) and opened by turning each of said marked dial discs (4) a given number of times to establish a predetermined combination of marks provided in outer peripheral surfaces of said dial discs (4); said combination lock (6) is held in its locked condition when said predetermined combination of marks of said dial discs (4) is not established; a cylinder lock (13) is incorporated in said door handle (2) and disposed adjacent to said combination lock (6) in a longitudinal direction of said door handle (2), wherein said cylinder lock (13) is provided with a rotor (8); when a key (7) is inserted into a keyhole (9) of said rotor (8) of said cylinder lock (13), said cylinder lock (13) has its internal lock mechanism (10) unlocked to permit said rotor (8) to be turned by said key (7) thus inserted into said keyhole (9) of said rotor (8); when said rotor (8) is turned, a stopper plate (11) which is slidably received in a side through-hole (12) of said door handle (2) is driven in a manner such that said stopping plate (11) is projected outward from said side through-hole (12) and retracted from the outside of said door handle (2); said stopping plate (11) has its upper end portion (14) abut against a shoulder portion (15) of a lower surface of a proximal end portion of a receiver lever (16); said receiver lever (16) has its proximal end portion pivoted to an inner wall portion of said base body (1) through a first pivot (17); said shoulder portion (15) of said receiver lever (16) is provided with a cam slope (18) through which said receiver lever (16) is pushed upward by said upper end portion of said stopper plate (11); said receiver lever (16) is rotatably urged toward said stopping plate (11) by means of a first spring member (19); a slider (21) is disposed in parallel with a center pin (20) of said combination lock (6), and urged toward said cylinder lock (13) by means of a second spring member (22) in a manner such that a lower end portion (23) of said slider (21) abuts against an upper surface of said receiver lever (16), so that said slider (21) has its restriction portion (26) engaged with and disengaged from a locking end portion (25) of said lock plate (5) when said lock plate (5) is held in its locked position and its unlocked position, respectively; when said lock plate (5) is held in its unlocked position, said door handle (2) is capable of being pulled forward out of said base body (1); when said door handle (2) is thus pulled out forward, said stopping plate (11) pushes said cam slope (18) of said receiver lever (16) swingably upward so that said receiver lever (16) is moved to its unlocked position; and when said lock plate (5) is held in its locked position, said lock plate (5) has its locking end portion (25) engaged with said restriction portion (26) of said slider (21) to prevent said receiver lever (16) from turning on said first pivot (17).
- 2. The door locking handle assembly of claim 1, wherein said combination lock (6) includes said plurality of said marked dial discs (4) in an alternating relationship with an equal number of adjacent cam discs (41), said dial discs (4) and said cam discs (41) being rotatably mounted on said center pin (20).
- 3. The door locking handle assembly of claim 2, wherein said marked dial discs (4) can each be interlocked to each adjacent said cam disc (41) by a plurality of positioning projections (45) which are inserted axially into a mating positioning groove (46).
- 4. The door locking handle assembly of claim 2, wherein each said marked dial disc (4) has a plurality of positioning grooves (65) provided equally spaced apart on the dial disc outer periphery, each said dial disc (4) being held in a predetermined angular position by a third spring member (66) fixedly mounted in said handle (2).
- 5. The door locking handle assembly of claim 2, wherein said door handle (2) has an elongated hollow portion (30) covered by a back plate member (29).
- 6. The door locking handle assembly of claim 1, wherein said base body (1) is fixedly mounted onto said door (30) by a mounting plate (34) having a U-shaped form and a screw (35) fastening means.
- 7. In a door locking handle assembly with a built-in combination lock (6), the assembly being provided with a base body (1) which is fixedly mounted on a door (30) of a box, wherein a door handle (2) is pivoted to said base body (1) so as to be capable of being pulled out forward and pushed back rearward relative to said base body (1) and also turned sideward on a locking shaft (29) after completion of its pulling-out operation, wherein a locking member (3) serving as a door bolt for locking said door (3) to a main body of said box is directly or indirectly connected with said door handle (2) so as to be engaged with and disengaged from a receiving portion of a stationary frame element such as said main body of said box when said door handle (2) is pulled out forward and then turned sideward on said locking shaft (29) after completion of the pulling-out operation of said door handle (2), the improvement wherein:said combination lock (6), which is provided with a plurality of marked dial discs (4), in incorporated in said door handle (2) and opened by turning each of said marked dial discs (4) a given number of times to establish a predetermined combination of marks provided in outer peripheral surfaces of said dials discs (4); said plurality of dial discs (4) being provided in an alternating relationship with an equal number of adjacent cam discs (41), said dial discs (4) and said cam discs (41) being each rotatably mounted on an elongated center pin (20), wherein said marked dial discs (4) can be interlocked to each adjacent said cam disc (41) by a plurality of positioning projections (45) which are inserted axially into a mating positioning groove (46); said combination lock (6) is held in its locked condition when said predetermined combination of marks of said dial discs (4) is not established; a cylinder lock (13) is incorporated in said door handle (2) and disposed adjacent to said combination lock (6) in a longitudinal direction of said door handle (2), wherein said cylinder lock (13) is provided with a rotor (8); when a key (7) is inserted into a keyhole (9) of said rotor (8) of said cylinder lock (13), said cylinder lock (13) has its internal lock mechanism (1) unlocked to permit said rotor (8) to be turned by said key (7) thus inserted into said keyhole (9) of said rotor (8); when said rotor (8) is turned, a stopper plate (11) which is slidably received in a side through-hole (12) of said door handle (2) is driven in a manner such that said stopping plate (11) is projected outward from said side through-hole (12) and retracted from the outside of said door handle (2); said stopping plate (11) has its upper end portion (14) abut against a shoulder portion (15) of a lower surface of a proximal end portion of a receiver lever (16); said receiver lever (16) has its proximal end portion pivoted to an inner wall portion of said base body (1) through a first pivot (17); said shoulder portion (15) of said receiver lever (16) is provided with a cam slope (18) through which said receiver lever (16) is pushed upward by said upper end portion of said stopper plate (11); said receiver lever (16) is rotatably urged toward said stopping plate (11) by means of a first spring member (19); a slider (21) is disposed in parallel with said center pin (20) of said combination lock (6), and urged toward said cylinder lock (13) by means of a second spring member (22) in a manner such that a lower end portion (23) of said slider (21) abuts against an upper surface of said receiver lever (16), so that said slider (21) has its restriction portion (26) engaged with and disengaged from a locking end portion (25) of said lock plate (5) when said lock plate (5) is held in its locked position and its unlocked position, respectively; when said lock plate (5) is held in its unlocked position, said door handle (2) is capable of being pulled forward out of said base body (1); when said door handle (2) is thus pulled out forward, said stopping plate (11) pushes said cam slope (18) of said receiver lever (16) swingably upward so that said receiver lever (16) is moved to its unlocked position; and when said lock plate (5) is held in its locked position, said lock plate. (5) has its locking end portion (25) engaged with said restriction portion (26) of said slider (21) to prevent said receiver lever (16) from turning on said first pivot (17).
Priority Claims (1)
Number |
Date |
Country |
Kind |
2001/230989 |
Jul 2001 |
JP |
|
US Referenced Citations (13)