CA2213208C - Locking device for doors - Google Patents
Locking device for doors Download PDFInfo
- Publication number
- CA2213208C CA2213208C CA002213208A CA2213208A CA2213208C CA 2213208 C CA2213208 C CA 2213208C CA 002213208 A CA002213208 A CA 002213208A CA 2213208 A CA2213208 A CA 2213208A CA 2213208 C CA2213208 C CA 2213208C
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- CA
- Canada
- Prior art keywords
- bolt
- dead
- cam
- disc
- recess
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Lock And Its Accessories (AREA)
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Abstract
The present invention relates to a locking device for doors, intended for connection between the dead-bolt (1) of the door and the drive means (2) of the lock. The invention is characterized in that a hinged arm (6) is connected to the dead-bolt (1) or its extension (5) , a wheel (7) or pin being arranged at the other end of the arm (6) and designed to tumble into a reces s (8) in a pivotable cam-disc (9), or to be disengaged from this recess by means of a link mechanism (11), whereupon in the latter position the cam-disc (9) is arranged to block the dead-bolt ( 1) in the first position and upon tumbling into the recess (8) to release it, and also that the dead- bolt (1) has an inclined surface (3) designed, upon pressure against the dead-bolt, to assist in the opening process.
Description
LOCKING DEVICE FOR DOORS
Field of the invention The present invention relates to a locking device for doors, intended for connection between the dead-bolt of the door and its drive means (door-frame or rotating cam, such S as an electrical strike plate).
Background of the invention It is important in different locking constructions that the lock has distinct positions, locked and unlocked. There is a risk when unlocking a door, for instance during emergency evacuation of premises, that a door cannot be opened although it has been unlocked in the normal manner. In critical situations this may have disastrous results.
Both security and fire-protection aspects must be respected. The locked position shall be firm and unlocking shall not be made more difficult, for instance when a crowd of people are pushing towards the exit, thereby unintentionally preventing its opening.
Summary of the invention The object of the invention is a solution of these and other similar problems.
One aspect of the invention provides a locking device for doors comprising: a dead-bolt provided with an inclined surface arranged to be influenced by pressure, being connected to drive means of the lock; a hinged arm having one end pivotally connected to an extension of the dead-bolt; a wheel/pin being arranged at an other end of the hinged arm and designed to tumble into a recess in a pivotable cam-disc upon pivoting of the cam-disc, which occurs when the dead-bolt is pushed in, and also to be disengageable from this recess by means of a link mechanism; and whereupon the cam-disc in the latter case is arranged to block the dead-bolt and, upon tumbling into the recess of the wheel/pin release it, the dead-bolt upon pressure assisting in the opening process.
One other aspect of the invention provides a door lock device comprising: a dead-bolt having an extension with a blocking surface; a hinged arm having one end connected to the dead-bolt extension; a wheel/pin arranged at the other end of the hinged arm; a cam-disc including a recess and a locking surface; and pivoting means for pivoting the cam-disc into a first position where the dead-bolt is operative in a door opening position and the wheel/pin is tumbled into the cam-disc recess; the pivoting means being capable of moving the wheel/pin out of the recess so that the cam-disc is pivoted into a second position where the dead-bolt is maintained in a locked position.
One other aspect of the invention provides a locking device for a door comprising: a dead-bolt having an extension with a blocking surface; a hinged arm having a first end connected to the dead-bolt extension and a wheel/pin arranged at a second end of the hinged arm; a pivotable cam-disc including a recess and a locking surface; the wheel/pin being arranged to tumble into the recess upon turning of the cam-disc so that the dead-bolt is held in an open position; a spring bolt; a link mechanism actuatable by the spring bolt, the link mechanism moving the wheel/pin out of the recess and along a surface of the cam-disc, the cam-disc locking surface being engaged with the blocking surface of the dead-bolt extension, thereby holding the dead bolt in a locked position.
Still another aspect of the invention is characterized in that a hinged arm is connected to a dead-bolt or its extension, a wheel or pin being arranged at the other end of the arm and designed to tumble into a recess in a pivotable cam-disc upon turning of the cam-disc, and also to be disengageable from this recess, whereupon the cam-disc in the latter case is arranged to block the dead-bolt and upon tumbling into the recess release it, and also that the dead-bolt has an inclined surface designed, upon pressure against the dead bolt to assist in the opening process. The arrangement of dead-bolt and drive means normally provides reliable locking and unlocking and the inclined surface assists in ensuring opening even in emergency situations arising out of pressure against the door and thus against the dead-bolt, since a force component is obtained in opening direction of the dead-bolt.
The invention can be used on double doors by applying it on the passive door, where pressure is obtained from a door-frame. The drive means comprises a spring bolt actuated by a door-frame.
The invention can also be applied on a single door, such as a fire-door, where the pressure is obtained from a rotating cam, e.g. an electrical strike plate. An example of a lock for a single door where the invention can be applied, is shown in Swedish patent application No. 8900988 or US Patent No. 5,195,792. The drive means is in this patent an electro-magnet, and the pressure is obtained from a rotating cam.
In a preferred embodiment the cam-disc is arranged to be turned either with or against spring force and the cam-disc is provided with a blocking protrusion, designed to cooperate in the locking position with a locking surface in the extension of the dead-bolt.
Brief description of the drawings:
The invention will be described in more detail by way of example in the accompanying drawings in which:
Fig. 1 is a side elevation view of the locking device, in accordance with a preferred embodiment of the invention;
Fig. 2 is a front elevation view of the locking device of the present invention; and Fig. 3 is a top plan view, fragmented, of the locking device of the present invention, showing more particularly the spring bolt.
Description of the preferred embodiment Figs 1 and 2 show the lock seen from two different directions, and Figure 3 shows a detailed view of the spring bolt.
In Figs 1 and 2 a lock is shown having a dead-bolt (1) designed for engagement in a door-frame and to lock the passive door, in the case of double doors, to a door-frame.
The dead-bolt (1) is shaped with an inclined surface (3) designed so that upon pressure against the door, a force component in the opening direction is produced. The dead-bolt has an extension (5) to which an arm (6) is hinged. A wheel (7) or pin (wheel/pin) for engagement in a recess (8) in a swivel cam-disc (9) is arranged at the outer end of the arm (6). This is the open position. To achieve locking, this wheel/pin (7) is moved out of the recess and up along the outer edge of the cam-disc so that the cam-disc is pushed inwards and a blocking surface (13) cooperates with a locking surface in the extension (14) of the dead-bolt. This is the locked position. The hinged arm (6) on which the wheel/pin is located, is connected to one end of a link arm (11), the other end of the link arm is connected to a swivel plate (10) which can be actuated by a spring bolt (2). If the spring bolt (2) is pushed out, the hinged arm (6) with the wheel/pin (7) is actuated so that the wheel/pin tumbles into the recess and the cam-disc swings out under the influence the force of a spring (12). This causes the blocking surface (13) to be released and the lock opens, partly due to influence from the inclined surface (3) which receives pressure from the door-frame. The cam-disc is moved either against or with the force of the spring (12). (4) denotes attachment means for the various link mechanisms. Fig. 3 shows a side view of the spring bolt which constitutes the drive means of this lock.
The device according to the invention can be varied in many ways within the scope of the following claims.
Field of the invention The present invention relates to a locking device for doors, intended for connection between the dead-bolt of the door and its drive means (door-frame or rotating cam, such S as an electrical strike plate).
Background of the invention It is important in different locking constructions that the lock has distinct positions, locked and unlocked. There is a risk when unlocking a door, for instance during emergency evacuation of premises, that a door cannot be opened although it has been unlocked in the normal manner. In critical situations this may have disastrous results.
Both security and fire-protection aspects must be respected. The locked position shall be firm and unlocking shall not be made more difficult, for instance when a crowd of people are pushing towards the exit, thereby unintentionally preventing its opening.
Summary of the invention The object of the invention is a solution of these and other similar problems.
One aspect of the invention provides a locking device for doors comprising: a dead-bolt provided with an inclined surface arranged to be influenced by pressure, being connected to drive means of the lock; a hinged arm having one end pivotally connected to an extension of the dead-bolt; a wheel/pin being arranged at an other end of the hinged arm and designed to tumble into a recess in a pivotable cam-disc upon pivoting of the cam-disc, which occurs when the dead-bolt is pushed in, and also to be disengageable from this recess by means of a link mechanism; and whereupon the cam-disc in the latter case is arranged to block the dead-bolt and, upon tumbling into the recess of the wheel/pin release it, the dead-bolt upon pressure assisting in the opening process.
One other aspect of the invention provides a door lock device comprising: a dead-bolt having an extension with a blocking surface; a hinged arm having one end connected to the dead-bolt extension; a wheel/pin arranged at the other end of the hinged arm; a cam-disc including a recess and a locking surface; and pivoting means for pivoting the cam-disc into a first position where the dead-bolt is operative in a door opening position and the wheel/pin is tumbled into the cam-disc recess; the pivoting means being capable of moving the wheel/pin out of the recess so that the cam-disc is pivoted into a second position where the dead-bolt is maintained in a locked position.
One other aspect of the invention provides a locking device for a door comprising: a dead-bolt having an extension with a blocking surface; a hinged arm having a first end connected to the dead-bolt extension and a wheel/pin arranged at a second end of the hinged arm; a pivotable cam-disc including a recess and a locking surface; the wheel/pin being arranged to tumble into the recess upon turning of the cam-disc so that the dead-bolt is held in an open position; a spring bolt; a link mechanism actuatable by the spring bolt, the link mechanism moving the wheel/pin out of the recess and along a surface of the cam-disc, the cam-disc locking surface being engaged with the blocking surface of the dead-bolt extension, thereby holding the dead bolt in a locked position.
Still another aspect of the invention is characterized in that a hinged arm is connected to a dead-bolt or its extension, a wheel or pin being arranged at the other end of the arm and designed to tumble into a recess in a pivotable cam-disc upon turning of the cam-disc, and also to be disengageable from this recess, whereupon the cam-disc in the latter case is arranged to block the dead-bolt and upon tumbling into the recess release it, and also that the dead-bolt has an inclined surface designed, upon pressure against the dead bolt to assist in the opening process. The arrangement of dead-bolt and drive means normally provides reliable locking and unlocking and the inclined surface assists in ensuring opening even in emergency situations arising out of pressure against the door and thus against the dead-bolt, since a force component is obtained in opening direction of the dead-bolt.
The invention can be used on double doors by applying it on the passive door, where pressure is obtained from a door-frame. The drive means comprises a spring bolt actuated by a door-frame.
The invention can also be applied on a single door, such as a fire-door, where the pressure is obtained from a rotating cam, e.g. an electrical strike plate. An example of a lock for a single door where the invention can be applied, is shown in Swedish patent application No. 8900988 or US Patent No. 5,195,792. The drive means is in this patent an electro-magnet, and the pressure is obtained from a rotating cam.
In a preferred embodiment the cam-disc is arranged to be turned either with or against spring force and the cam-disc is provided with a blocking protrusion, designed to cooperate in the locking position with a locking surface in the extension of the dead-bolt.
Brief description of the drawings:
The invention will be described in more detail by way of example in the accompanying drawings in which:
Fig. 1 is a side elevation view of the locking device, in accordance with a preferred embodiment of the invention;
Fig. 2 is a front elevation view of the locking device of the present invention; and Fig. 3 is a top plan view, fragmented, of the locking device of the present invention, showing more particularly the spring bolt.
Description of the preferred embodiment Figs 1 and 2 show the lock seen from two different directions, and Figure 3 shows a detailed view of the spring bolt.
In Figs 1 and 2 a lock is shown having a dead-bolt (1) designed for engagement in a door-frame and to lock the passive door, in the case of double doors, to a door-frame.
The dead-bolt (1) is shaped with an inclined surface (3) designed so that upon pressure against the door, a force component in the opening direction is produced. The dead-bolt has an extension (5) to which an arm (6) is hinged. A wheel (7) or pin (wheel/pin) for engagement in a recess (8) in a swivel cam-disc (9) is arranged at the outer end of the arm (6). This is the open position. To achieve locking, this wheel/pin (7) is moved out of the recess and up along the outer edge of the cam-disc so that the cam-disc is pushed inwards and a blocking surface (13) cooperates with a locking surface in the extension (14) of the dead-bolt. This is the locked position. The hinged arm (6) on which the wheel/pin is located, is connected to one end of a link arm (11), the other end of the link arm is connected to a swivel plate (10) which can be actuated by a spring bolt (2). If the spring bolt (2) is pushed out, the hinged arm (6) with the wheel/pin (7) is actuated so that the wheel/pin tumbles into the recess and the cam-disc swings out under the influence the force of a spring (12). This causes the blocking surface (13) to be released and the lock opens, partly due to influence from the inclined surface (3) which receives pressure from the door-frame. The cam-disc is moved either against or with the force of the spring (12). (4) denotes attachment means for the various link mechanisms. Fig. 3 shows a side view of the spring bolt which constitutes the drive means of this lock.
The device according to the invention can be varied in many ways within the scope of the following claims.
Claims (12)
1. A locking device for doors comprising:
a dead-bolt provided with an inclined surface arranged to be influenced by pressure, being connected to drive means of the lock;
a hinged arm having one end pivotally connected to an extension of the dead-bolt;
a wheel/pin being arranged at an other end of the hinged arm and designed to tumble into a recess in a pivotable cam-disc upon pivoting of the cam-disc, which occurs when the dead-bolt is pushed in, and also to be disengageable from this recess by means of a link mechanism; and whereupon the cam-disc in the latter case is arranged to block the dead-bolt and, upon tumbling into the recess of the wheel/pin, release it, the dead-bolt upon pressure assisting in the opening process.
a dead-bolt provided with an inclined surface arranged to be influenced by pressure, being connected to drive means of the lock;
a hinged arm having one end pivotally connected to an extension of the dead-bolt;
a wheel/pin being arranged at an other end of the hinged arm and designed to tumble into a recess in a pivotable cam-disc upon pivoting of the cam-disc, which occurs when the dead-bolt is pushed in, and also to be disengageable from this recess by means of a link mechanism; and whereupon the cam-disc in the latter case is arranged to block the dead-bolt and, upon tumbling into the recess of the wheel/pin, release it, the dead-bolt upon pressure assisting in the opening process.
2. The locking device as claimed in claim 1, characterized in that the inclined surface in the dead-bolt is arranged to be influenced by pressure from one among a group consisting of a door frame in double doors and a rotating cam.
3. The locking device as claimed in any one of claims 1 and 2, characterized in that the cam-disc is arranged to be turned either with or against a force exerted by a spring.
4. The locking device as claimed in any one of claims 1 to 3, characterized in that the cam-disc is provided with a blocking protrusion, designed to cooperate with a locking surface in the extension of the dead-bolt in a locking position.
5. The locking device as claimed in any one of claims 1 to 4, characterized in that the link mechanism comprises a link arm connected at one end to the hinged arm between its end pivotably connected to the extension of the dead-bolt and the wheel/pin; the link arm having an opposite end connected to a swivel plate, the swivel plate being operatively connected to the drive means.
6. A door lock device comprising:
a dead-bolt having an extension with a blocking surface;
a hinged arm having one end connected to the dead-bolt extension;
a wheel/pin arranged at the other end of said hinged arm;
a cam-disc including a recess and a locking surface; and pivoting means for pivoting the cam-disc into a first position where the dead-bolt is operative in a door opening position and said wheel/pin is tumbled into the cam-disc recess; said pivoting means being capable of moving said wheel/pin out of the recess so that said cam-disc be pivoted into a second position where said dead-bolt is maintained in a locked position.
a dead-bolt having an extension with a blocking surface;
a hinged arm having one end connected to the dead-bolt extension;
a wheel/pin arranged at the other end of said hinged arm;
a cam-disc including a recess and a locking surface; and pivoting means for pivoting the cam-disc into a first position where the dead-bolt is operative in a door opening position and said wheel/pin is tumbled into the cam-disc recess; said pivoting means being capable of moving said wheel/pin out of the recess so that said cam-disc be pivoted into a second position where said dead-bolt is maintained in a locked position.
7. The device according to claim 6, wherein said pivoting means includes a link arm, a swivel plate, a spring and a spring bolt, the spring bolt cooperating with the swivel plate and the link arm when the spring bolt is actuated against the force of the spring to cause the locked position.
8. The device according to claim 7, wherein the spring bolt is released and the force of the spring moves the swivel plate, the link arm, the hinged arm and thus allowing the dead-bolt into the door opening position.
9. The device according to any one of claims 6 to 8, wherein the locking surface of the cam-disc is positioned against the blocking surface of the dead-bolt so as to hold the dead-bolt in the locking position.
10. The device according to claim 8, wherein the dead bolt has an inclined surface which aids in opening of a locked door when the pivoting means are moved to the second position.
11. A locking device for a door comprising:
a dead-bolt having an extension with a blocking surface;
a hinged arm having a first end connected to the dead-bolt extension and a wheel/pin arranged at a second end of the hinged arm;
a pivotable cam-disc including a recess and a locking surface;
the wheel/pin being arranged to tumble into the recess upon turning of the cam-disc so that the dead-bolt is held in an open position;
a spring bolt;
a link mechanism actuatable by the spring bolt, said link mechanism moving the wheel/pin out of the recess and along a surface of the cam-disc, the cam-disc locking surface being engaged with the blocking surface of the dead-bolt extension, thereby holding the dead bolt in a locked position.
a dead-bolt having an extension with a blocking surface;
a hinged arm having a first end connected to the dead-bolt extension and a wheel/pin arranged at a second end of the hinged arm;
a pivotable cam-disc including a recess and a locking surface;
the wheel/pin being arranged to tumble into the recess upon turning of the cam-disc so that the dead-bolt is held in an open position;
a spring bolt;
a link mechanism actuatable by the spring bolt, said link mechanism moving the wheel/pin out of the recess and along a surface of the cam-disc, the cam-disc locking surface being engaged with the blocking surface of the dead-bolt extension, thereby holding the dead bolt in a locked position.
12. The locking device according to claim 11, wherein the link mechanism includes a swivel plate, a link arm having one end connected to the swivel plate, the other end being connected to the hinged arm and a spring being arranged so that the cam-disc is moved either with or against the force of the spring.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9500582A SE506503C2 (en) | 1995-02-17 | 1995-02-17 | Locking device at doors |
| SE9500582-3 | 1995-02-17 | ||
| PCT/SE1996/000166 WO1996025578A1 (en) | 1995-02-17 | 1996-02-12 | Locking device for doors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2213208A1 CA2213208A1 (en) | 1996-08-22 |
| CA2213208C true CA2213208C (en) | 2006-04-18 |
Family
ID=36250897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002213208A Expired - Fee Related CA2213208C (en) | 1995-02-17 | 1996-02-12 | Locking device for doors |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2213208C (en) |
-
1996
- 1996-02-12 CA CA002213208A patent/CA2213208C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2213208A1 (en) | 1996-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20160212 |