GB2312236A - Shoot bolt drive mechanism - Google Patents
Shoot bolt drive mechanism Download PDFInfo
- Publication number
- GB2312236A GB2312236A GB9704893A GB9704893A GB2312236A GB 2312236 A GB2312236 A GB 2312236A GB 9704893 A GB9704893 A GB 9704893A GB 9704893 A GB9704893 A GB 9704893A GB 2312236 A GB2312236 A GB 2312236A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gear
- primary drive
- drive
- engaged
- drive gear
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
- E05C9/04—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing with two sliding bars moved in opposite directions when fastening or unfastening
- E05C9/041—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing with two sliding bars moved in opposite directions when fastening or unfastening with rack and pinion mechanism
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B63/00—Locks or fastenings with special structural characteristics
- E05B63/06—Locks or fastenings with special structural characteristics with lengthwise-adjustable bolts ; with adjustable backset, i.e. distance from door edge
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
- E05C9/18—Details of fastening means or of fixed retaining means for the ends of bars
- E05C9/1825—Fastening means
- E05C9/1833—Fastening means performing sliding movements
- E05C9/185—Fastening means performing sliding movements parallel with actuating bar
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
- E05C9/20—Coupling means for sliding bars, rods, or cables
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
- E05C9/22—Guides for sliding bars, rods or cables
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B63/00—Locks or fastenings with special structural characteristics
- E05B63/0017—Locks with sliding bolt without provision for latching
- E05B63/0021—Locks with sliding bolt without provision for latching the bolt being shot over an increased length by a single turning operation of the key
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Structural Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
In a drive for a bi-directional shoot bolt mechanism, for securing doors and windows, a quadrant gear 14 is arranged to drive two racks 18,20, one rack being secured to each of two bolt arms 22,24. One rack 18 engages the quadrant gear 14 directly. The other rack 20 is driven through a pinion wheel 16 which is itself in engagement with a second set of teeth on the quadrant gear 14, offset by half of one pitch, thereby to result in the two bolt arms 22,24 being driven in opposite directions upon rotations of the quadrant gear 14. A larger quadrant gear 52 and two reversing pinions 54,56 (Figure 8) may instead be employed to achieve a longer throw of the bolt arms 22,24.
Description
SHOOT BOLT DRIVE MECHANISM
This invention is concerned with improvements in or relating to bidirectional shoot bolt mechanisms such as are used for securing opening windows and doors in closed positions.
Such mechanisms comprise a housing for a drive mechanism which is adapted to be accommodated in a recess in an edge member of a window or door. Two ordinarily strip-like bolt arms extend in opposite directions from a front face of the drive mechanism, to be moved longitudinally by the mechanism. The bolt arms are usually adapted to be accommodated in shallow channels formed in the edge member, end portions of the arms being projectable beyond guide members, secured to corners of the window or door, for engagement with keeps on an adjacent window or door frame. In an open condition of the mechanism, the bolt ends are drawn back from the keeps to the guide members to permit the window or door to be opened.
For securement in edge members of standardised extruded section, it is necessary that the dimensions of the drive mechanism housing come within certain predetermined limits. In particular, the depth of the mechanism from front to rear is so limited. For operation by means of a handle, the mechanism ordinarily comprises a primary drive gear (commonly a quadrant gear) which is slotted axially to receive a drive spindle on which the handle is fixed. It is necessary that the spindle axis be well removed from the front face of the edge member and, therefore, that the primary drive gear be positioned as rearwardly as possible within the housing. Intermediate drive mechanism, acting between the primary drive gear and transmission links of the bolt arms, needs to be accommodated between the primary drive gear and the front face of the mechanism.
This arrangement means that there tends to be a front to rear thrust on the primary drive gear in operation. The thrust has to be borne by the housing, and as a consequence of this, some of the available depth for the mechanism needs to be occupied by a rearmost portion of the housing supporting the primary gear. This in turn has limiting implications for the design of the primary drive gear and intermediate mechanism.
It is an object of the present invention to provide improvements relating to the design of shoot bolt drive mechanisms which enables more effective use to be made of the limited space available.
The invention provides, in one of its aspects, a shoot bolt mechanism comprising a primary drive gear arranged upon rotation to drive two bolt arms, each bolt arm being driven by means of a toothed rack, and one of the racks being engaged with said primary drive gear and the other of the racks being engaged with a reversing pinion which also is engaged with said primary drive gear, whereby said two bolt arms become driven in opposite directions upon rotation of said primary drive gear.
Such an arrangement can provide the advantage of being very compact, and can also enable the reversing gear to be well constrained.
The primary drive gear may be a quadrant gear which presents teeth around an arc of, typically, between 135 and 1800.
In a preferred construction of primary drive gear formed by casting, the gear presents two sets of teeth which are circumferentially off-set from one another, one set being arranged to be engaged by said one of the racks and the other being arranged to be engaged by the reversing pinion. The two sets may be off-set by half a pitch.
In order to achieve a longer throw of the bolt arms, or for other reasons, such mechanism may comprise two (or more) reversing pinions which are arranged to be engaged successively by said other of the drive racks, the pinions being spaced circumferentially about the primary drive gear.
There now follows a detailed description, to be read with reference to the accompanying drawings, of a shoot bolt mechanism which illustrates the present invention by way of example.
In the accompanying drawings:
Figure 1 is a side view of an operating mechanism (with a housing
half removed) in an open condition of the shoot bolt mechanism;
Figure 2 is a front face view of the operating mechanism, seen in
the direction of arrow A in Figure 1;
Figure 3 is an enlarged view in section on line III-III of Figure 1;
Figure 4 is a view similar to Figure 1 but with the mechanism in a
closed condition;
Figure 5 is a view similar to Figure 2 but with the mechanism in
its closed condition;
Figure 6 is an enlarged view in section on line VI-VI of Figure 4;
Figure 7 is a side view of a second operating mechanism in an
open condition, a housing half and one drive rack being removed;
Figure 8 is a view similar to Figure 7 but with the omitted drive
rack restored;
Figure 9 is a view similar to Figure 7 but with the mechanism in a
mid-way position of adjustment between fully open and fully closed
conditions;
Figure 10 is a side view of a quadrant gear having a staggered
tooth form; and
Figure 11 is a view in section on line XI-XI of Figure 10.
An operating mechanism of a bi-directional shoot bolt, for securing a window or door, is shown in Figures 1 to 6. Two halves 10,12 of a housing provide support between them for a primary-drive quadrant gear 14, a reversing pinion 16 and first and second racks 18 and 20 of two transmission links comprising bars 22,24 of oppositely directed bolts.
The quadrant gear 14 is formed with an axially aligned slot 26 of square cross-section to receive a drive spindle which is secured to an operating handle (spindle and handle not shown, but can be of conventional form). As seen in Figures 1 and 3, the slot 26 extends through a cylindrical hub-forming portion 28 of the quadrant gear which is of equal axial length to the width of the housing. A tooth-providing crest 30 of the gear extends about part only of the circumference of the hub-forming portion 28, being of shorter length than the hub-forming portion and being positioned centrally (in the axial direction). At each end of the gear, a groove 32,34 is cut into the root of the crest, adjacent to the cylindrical surface of the hub-forming portion 28, the groove extending about the hub-forming portions for the full extent of the crest 30.
The grooves 32,34 provide part-circular, open-ended, recesses to receive flanges 36,38, of corresponding dimensions, projecting inwardly from the housing halves 10,12; the grooves 32,34 and flanges 36,38 are concentric with the axis of the quadrant gear 14, and the flanges 36,38 bound circular openings 40,42 in which opposite end portions of the hubforming portion 28 of the gear are received.
The flanges 36,38 of the housing halves provide radial support for the quadrant gear in the direction away from the racks 18,20 and reversing pinion 16. This support reduces the demands on the housing halves at the openings 40,42 which form further bearings for the hubforming portion 28 of the quadrant gear. As a consequence, it is not necessary for the housing to surround the quadrant gear completely and, as best seen in Figures 1 and 4, the rearmost surface 44 of the hubforming portion of the gear is exposed through an opening in the housing and is generally flush with a rear face 46 of the housing. Rotation of the quadrant gear is so guided by the combination of the flanges 36,38 and the part-cylindrical bearing surfaces formed by the housing halves around the openings 40,42.
The teeth of the quadrant gear are held in engagement with the teeth of the first rack 18. Upon rotation of the quadrant gear clockwise from a starting position (shown in Figure 1) to a finishing position (shown in Figure 4) the rack and its associated transmission bar 22 are driven from left to right, as seen in the drawings, the two quadrant positions corresponding with fully open (Figure 2) and fully closed (Figure 5) conditions of the shoot bolt mechanism.
The quadrant gear teeth are also held in engagement with the reversing pinion 16, and the pinion is held in engagement with the teeth of the second rack 20. In rotating the quadrant gear from its starting position to its finishing position the second rack and its associated transmission bar 24 are, therefore, driven in the opposite direction from the first rack and transmission bar (i.e. from right to left).
The pinion 16 and first rack 18 are positioned side by side (i.e.
axially spaced) on the quadrant gear and the two racks 18,20 are likewise spaced axially of the gear, the teeth of the second rack 20 being at a greater radial distance from the axis of the gear for accommodation of the reversing pinion therebetween. The transmission bars 22,24 are of flat strip form and are retained in place by means of a cover plate 48 applied to the front face of the housing.
A long-throw version of the drive mechanism just described is illustrated by Figures T and 8. Two halves 50 (only one shown) of a housing provide supp t between them for a primary drive quadrant gear 52, two reversing pinions 54,56, and first and second drive racks 58,60 of two transmission links.
The first drive rack 58 engages the drive quadrant 52 directly, in the manner of the first rack 18 engaging the quadrant gear 14 of the first embodiment.
The second drive rack 60 is arranged to be driven successively by the two reversing pinions 54,56, which are in engagement with the drive quadrant at circumferentially-spaced positions about the quadrant. At a mid-way position of the quadrant (Figure 9) half-way through an opening or closing operation, both reversing pinions are in engagement with both the quadrant and the drive rack.
It is to be observed that the housings of the two embodiments described are of similar overall dimensions, but the quadrant gear 52 of the long-throw version is of substantially larger diameter than the quadrant 14 of the first version in order to provide for greater movement of the two racks from the same 90" rotation of the associated quadrant gear. The use of two reversing pinions54,56 enables the drive mechanism to be accommodated within substantially the same housing size.
A preferred design of cast quadrant gear, usable in either of the two versions of drive mechanism described, is shown in Figures 10 and 11. The gear presents, around its circumference, first and second sets 62,64 of teeth for engagement with the first drive rack 18,58 and the reversing pinion (or pinions) 16,54,56 respectively. The tooth sets are off-set from one another by one half of one pitch, the two sets meeting on a split plane P of the casting. In this manner a compact yet very strong gear is produced.
Claims (6)
1. A shoot bolt mechanism comprising a primary drive gear arranged upon rotation to drive two bolt arms, each bolt arm being driven by means of a toothed rack, and one of the racks being engaged with said primary drive gear and the other of the racks being engaged with a reversing pinion which also is engaged with said primary drive gear, whereby said two bolt arms become driven in opposite directions upon rotation of said primary drive gear.
2. A shoot bolt mechanism according to claim 1 in which the primary drive gear is a quadrant gear.
3. A shoot bolt mechanism according to either of claims 1 and 2 in which the primary drive gear presents two sets of teeth which are circumferentially off-set from one another, one set being engaged by said one of the racks and the other being engaged by the reversing pinion.
4. A shoot bolt mechanism according to claim 3 in which the two sets of gear teeth are off-set by one half of one pitch.
5. A shoot bolt mechanism according to any one of claims 1 to 4 in which there are two reversing pinions arranged to be engaged successively by said other of the drive racks, the two pinions being spaced circumferentially about the primary drive gear.
6. A shoot bolt mechanism substantially as hereinbefore described with reference either to Figures 1 to 6 or to Figures 7,8 and 9 of the accompanying drawings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9607908A GB9607908D0 (en) | 1996-04-17 | 1996-04-17 | Shoot bolt mechanism |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9704893D0 GB9704893D0 (en) | 1997-04-30 |
GB2312236A true GB2312236A (en) | 1997-10-22 |
GB2312236B GB2312236B (en) | 2000-09-20 |
Family
ID=10792184
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9607908A Pending GB9607908D0 (en) | 1996-04-17 | 1996-04-17 | Shoot bolt mechanism |
GB9704893A Expired - Lifetime GB2312236B (en) | 1996-04-17 | 1997-03-10 | Shoot bolt drive mechanism |
GB9705294A Expired - Lifetime GB2313617B (en) | 1996-04-17 | 1997-03-14 | Shoot bolt mechanism |
GB9707502A Expired - Lifetime GB2313618B (en) | 1996-04-17 | 1997-04-16 | Shoot bolt mechanism |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9607908A Pending GB9607908D0 (en) | 1996-04-17 | 1996-04-17 | Shoot bolt mechanism |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9705294A Expired - Lifetime GB2313617B (en) | 1996-04-17 | 1997-03-14 | Shoot bolt mechanism |
GB9707502A Expired - Lifetime GB2313618B (en) | 1996-04-17 | 1997-04-16 | Shoot bolt mechanism |
Country Status (1)
Country | Link |
---|---|
GB (4) | GB9607908D0 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0992646A1 (en) * | 1998-10-08 | 2000-04-12 | FERCO INTERNATIONAL Ferrures et Serrures de Bâtiment, Société Anonyme | Espagnolette or espagnolette lock for doors, windows or the like |
GB2360062A (en) * | 2000-03-10 | 2001-09-12 | Santos Manuf Lda | Espagnolette Bolting System |
GB2399596A (en) * | 2003-03-15 | 2004-09-22 | Trojan Hardware & Designs Ltd | Shoot bolt drive mechanism |
EP1619332A1 (en) * | 2004-06-08 | 2006-01-25 | Aug. Winkhaus GmbH & Co. KG | Drive gear for an espagnolette fitting |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9724965D0 (en) * | 1997-11-27 | 1998-01-28 | Trojan Hardware & Designs Ltd | Shoot bolt mechanism |
GB2336393A (en) * | 1998-03-24 | 1999-10-20 | Securistyle Ltd | Adjustable connectors for a shootbolt mechanism |
EP2339100B9 (en) * | 2009-12-23 | 2013-07-03 | Roto Frank Ag | Gear assembly of a drive rod lining, drive rod lining with such a gear assembly and window, door or similar with such a drive rod lining |
DE102016105351A1 (en) * | 2016-03-22 | 2017-09-28 | Carl Wittkopp Gmbh | Lock for safekeeping |
DE102017108234A1 (en) * | 2017-04-18 | 2018-10-18 | Maco Technologie Gmbh | fitting assembly |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB341329A (en) * | 1930-03-04 | 1931-01-15 | Henry Hope & Sons Ltd | Improvements relating to bolts for doors, windows and the like |
EP0004325A2 (en) * | 1978-03-29 | 1979-10-03 | Siegenia-Frank Kg | Improvements in and relating to locking devices for windows, doors and the like |
GB2291103A (en) * | 1994-07-06 | 1996-01-17 | W M S Group Ltd | Espagnolette fastening |
GB2298227A (en) * | 1995-02-22 | 1996-08-28 | Colin Sidney Middleton | Espagnolette bolting systems |
GB2300665A (en) * | 1995-05-06 | 1996-11-13 | Plus Plan | Operating mechanism for espagnolette fastening system |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2148377B (en) * | 1983-10-22 | 1987-02-18 | Hardware & Systems Patents Ltd | Improvements in fasteners for doors, windows and the like |
FI853115L (en) * | 1985-08-14 | 1987-02-15 | Waertsilae Oy Ab | LAOSHUS FOERSETT MED DUBBELREGEL. |
GB8802884D0 (en) * | 1988-02-09 | 1988-03-09 | Yale Security Prod Ltd | Improvements in/relating to locks |
GB2264529B (en) * | 1992-02-29 | 1995-04-12 | Cego Ltd | Operating mechanism for espagnolettes and other similar fasteners |
GB2280469B (en) * | 1993-07-26 | 1996-11-20 | Feneseal Ltd | Shoot bolt mechanism |
GB9408401D0 (en) * | 1994-04-28 | 1994-06-22 | Parkes Josiah & Sons Ltd | Locks |
GB2300218A (en) * | 1995-04-24 | 1996-10-30 | Feneseal Ltd | A shoot bolt mechanism having rotatable transfer members |
GB2310456B (en) * | 1996-02-20 | 2000-09-06 | Derek King | Shoot bolt window locking system |
-
1996
- 1996-04-17 GB GB9607908A patent/GB9607908D0/en active Pending
-
1997
- 1997-03-10 GB GB9704893A patent/GB2312236B/en not_active Expired - Lifetime
- 1997-03-14 GB GB9705294A patent/GB2313617B/en not_active Expired - Lifetime
- 1997-04-16 GB GB9707502A patent/GB2313618B/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB341329A (en) * | 1930-03-04 | 1931-01-15 | Henry Hope & Sons Ltd | Improvements relating to bolts for doors, windows and the like |
EP0004325A2 (en) * | 1978-03-29 | 1979-10-03 | Siegenia-Frank Kg | Improvements in and relating to locking devices for windows, doors and the like |
GB2291103A (en) * | 1994-07-06 | 1996-01-17 | W M S Group Ltd | Espagnolette fastening |
GB2298227A (en) * | 1995-02-22 | 1996-08-28 | Colin Sidney Middleton | Espagnolette bolting systems |
GB2300665A (en) * | 1995-05-06 | 1996-11-13 | Plus Plan | Operating mechanism for espagnolette fastening system |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0992646A1 (en) * | 1998-10-08 | 2000-04-12 | FERCO INTERNATIONAL Ferrures et Serrures de Bâtiment, Société Anonyme | Espagnolette or espagnolette lock for doors, windows or the like |
FR2784414A1 (en) * | 1998-10-08 | 2000-04-14 | Ferco Int Usine Ferrures | CREMONE OR CREMONE-LOCK FOR DOOR, WINDOW OR THE LIKE |
GB2360062A (en) * | 2000-03-10 | 2001-09-12 | Santos Manuf Lda | Espagnolette Bolting System |
GB2360062B (en) * | 2000-03-10 | 2002-05-22 | Santos Manuf Lda | Improvements in espagnolette bolting systems |
GB2399596A (en) * | 2003-03-15 | 2004-09-22 | Trojan Hardware & Designs Ltd | Shoot bolt drive mechanism |
GB2399596B (en) * | 2003-03-15 | 2006-05-17 | Trojan Hardware & Designs Ltd | Shoot bolt drive mechanism |
EP1619332A1 (en) * | 2004-06-08 | 2006-01-25 | Aug. Winkhaus GmbH & Co. KG | Drive gear for an espagnolette fitting |
Also Published As
Publication number | Publication date |
---|---|
GB9705294D0 (en) | 1997-04-30 |
GB9607908D0 (en) | 1996-06-19 |
GB9704893D0 (en) | 1997-04-30 |
GB2313617B (en) | 2000-08-23 |
GB2313618A (en) | 1997-12-03 |
GB9707502D0 (en) | 1997-06-04 |
GB2313618B (en) | 2000-07-26 |
GB2312236B (en) | 2000-09-20 |
GB2313617A (en) | 1997-12-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
730 | Substitution of applicants allowed (sect. 30/1977) | ||
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20091015 AND 20091021 |
|
PE20 | Patent expired after termination of 20 years |
Expiry date: 20170309 |