CA2243340C - Swing door lock for refrigerated cabinet - Google Patents
Swing door lock for refrigerated cabinet Download PDFInfo
- Publication number
- CA2243340C CA2243340C CA 2243340 CA2243340A CA2243340C CA 2243340 C CA2243340 C CA 2243340C CA 2243340 CA2243340 CA 2243340 CA 2243340 A CA2243340 A CA 2243340A CA 2243340 C CA2243340 C CA 2243340C
- Authority
- CA
- Canada
- Prior art keywords
- plate
- locking
- door
- swing door
- cabinet
- 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 - Lifetime
Links
- 230000008878 coupling Effects 0.000 claims 5
- 238000010168 coupling process Methods 0.000 claims 5
- 238000005859 coupling reaction Methods 0.000 claims 5
- 235000020965 cold beverage Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 241001116389 Aloe Species 0.000 description 1
- 235000011399 aloe vera Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C3/00—Fastening devices with bolts moving pivotally or rotatively
- E05C3/02—Fastening devices with bolts moving pivotally or rotatively without latching action
- E05C3/04—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt
- E05C3/041—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt rotating about an axis perpendicular to the surface on which the fastener is mounted
- E05C3/042—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt rotating about an axis perpendicular to the surface on which the fastener is mounted the handle being at one side, the bolt at the other side or inside the wing
-
- 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
- E05B63/0013—Locks with rotary bolt without provision for latching
-
- 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
- E05B63/12—Locks or fastenings with special structural characteristics with means carried by the bolt for interlocking with the keeper
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/0042—For refrigerators or cold rooms
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B9/00—Lock casings or latch-mechanism casings ; Fastening locks or fasteners or parts thereof to the wing
- E05B9/08—Fastening locks or fasteners or parts thereof, e.g. the casings of latch-bolt locks or cylinder locks to the wing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/30—Application of doors, windows, wings or fittings thereof for domestic appliances
- E05Y2900/31—Application of doors, windows, wings or fittings thereof for domestic appliances for refrigerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
- F25D23/028—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2323/00—General constructional features not provided for in other groups of this subclass
- F25D2323/02—Details of doors or covers not otherwise covered
- F25D2323/024—Door hinges
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Hinges (AREA)
Abstract
The invention provides a lock assembly suitable for securing a swing door hinged to a refrigerated cabinet and is intended to dissuade pilfering. The lock assembly includes a strike plate having a mounting plate for mounting to the cabinet, and a locking plate spaced from the mounting plate. The lock assembly further includes a door bracket having an outer door plate to be located on an outer surface of the swing door, and a locking member mounted to the door bracket. The locking member has a locking shaft connected to the locking member for rotation with the locking member. The locking member is locatable between the mounting plate and locking plate of the strike plate and against the locking plate to lock the swing door to the cabinet in a first angular position of the locking shaft, and released from the locking plate to unlock the swing door in a second angular position of the locking shaft.
Description
SWING DOOR LOCK FOR REFRIGERATED CABINET
FIELD OF THE INVENTION
This invention relates to a lock suitable for securing a swing door to a refrigerated cabinet and is intended to dissuade pilfering.
BACKGROUND OF THE INVENTION
Refrigerated cabinets are generally provided for the convenience of customers who require ready access to cold beverages for immediate consumption. Outside of regular business hours, it is sometimes desirable to restrict access to such cabinets in order to dissuade pilfering and yet it is problematic to find suitable locking means which are not awkward to use, which may readily be installed in the field, and which are aesthetically pleasing.
An object of this invention is to provide a lock mechanism which may readily be installed on a refrigerated cabinet without any structural modifications to the door and cabinet assembly and which is intended to dissuade pilfering.
SUMMARY OF THE INVENTION
In accordance with the invention, there is provided a lock assembly for a swing door hinged to a cabinet, the lock assembly comprising a strike plate having a mounting plate adapted to be mounted to the cabinet, and a locking plate spaced from the mounting plate; a door bracket having an outer door plate adapted to locate on an outer surface of the swing door, and a locking member mounted to the being adapted to be disposed between the mounting plate and locking plate of the strike plate and to locate against the locking plate to lock the swing door to the cabinet in a first angular position of the locking shaft, and the locking member being adapted to be released Erom the locking plate to unlock the swing door in a second angular position of the locking shaft.
BRIEF DESCRIPTION OF THE DRAWINGS
A preferred embodiment of the invention is now described belo~~ with reference to t:he accompanying drawings in which, Fig. 1 is an assembly drawing showing a strike plate for mounting to a cabinet;
I?ig. 2 is an assembly drawing showing a barrel lock in association with a door bracket in accordance with the invention;
Fig. 3 is a side elevation view of the door lock in accordance with the invention associated with a swing door and cabinet assembly;
Fig. 4 is a similar view to Fig. 2 from the opposite side and showing the door lock assembly in association with a swing door and cabinet assembly;
Fig. 5 is a similar view to Fig. 3 showing a first alternative embodiment of the invention;
Fig. 6 is a similar view to Fig. 2 showing a second alternative embodiment of the invention;
Fig. 7 is a similax view to Fig. 3 showing second alternative embodiment of Fig. 6; and Fig. 8 is a perspective view of alternative embodiment.
DESCRIPTION OF PREFERRED EMBODIMENT
As indicated above, the invention relates to a door lock which is used to secure a swing door which is hinged to a cabinet and finds particular application to refrigerated c:abinets which are used for self serve access to cold beverages or other refrigerated items.
(Jnly portions of a refrigerated cabinet are shown in the accompanying drawings as their basic structure is already well-known to those skilled in the art.
In Fig.1, there is illustrated the top left corner of a cabinet generally indicated by the numeral 20 and having an upper wall 22 disposed horizontally adjacent to a vertically extending side wall 24. Together, the upper wall and side wall define a front opening 26 for accessing the cabinet interior. A door 28 (Fig. 3) is hinged to the right of the cabinet opening 26 (as drawn), in a manner which is well known in the art and which is not shown in the drawings.
It will be appreciated that the swing door 28 may alternatively be hung on the left side of the cabinet which conveniently is pre-drilled with suitable threaded openings 30 adapted to receive mounting bolts 32.
Conveniently, a strike plate 34 forming part of the lock assembly of the invention is mounted to the cabinet 20 using the pre-drilled threaded openings 30 and mounting bolts 32, thereby greatly facilitating field installation of the lock assembly. The strike plate 34 comprises a sheet metal plate bent into a U-shaped configuration and defining a mounting plate 36 which is apertured to receive the mounting bolts 32 and, in use, is disposed adjacent to the cabinet 20. A locking plate 38 is forwardly spaced from the mounting plate 36 by a transversely-extending connecting web 40 and is somewhat shorter in height than the mounting plate so as to permit ready access to the mounting bolts 32 and associated washers 33. A rectangular opening 42 is formed in the locking plate 38 and is adapted to receive a locking member 90 as will be described in more detail further belo~~.
FIELD OF THE INVENTION
This invention relates to a lock suitable for securing a swing door to a refrigerated cabinet and is intended to dissuade pilfering.
BACKGROUND OF THE INVENTION
Refrigerated cabinets are generally provided for the convenience of customers who require ready access to cold beverages for immediate consumption. Outside of regular business hours, it is sometimes desirable to restrict access to such cabinets in order to dissuade pilfering and yet it is problematic to find suitable locking means which are not awkward to use, which may readily be installed in the field, and which are aesthetically pleasing.
An object of this invention is to provide a lock mechanism which may readily be installed on a refrigerated cabinet without any structural modifications to the door and cabinet assembly and which is intended to dissuade pilfering.
SUMMARY OF THE INVENTION
In accordance with the invention, there is provided a lock assembly for a swing door hinged to a cabinet, the lock assembly comprising a strike plate having a mounting plate adapted to be mounted to the cabinet, and a locking plate spaced from the mounting plate; a door bracket having an outer door plate adapted to locate on an outer surface of the swing door, and a locking member mounted to the being adapted to be disposed between the mounting plate and locking plate of the strike plate and to locate against the locking plate to lock the swing door to the cabinet in a first angular position of the locking shaft, and the locking member being adapted to be released Erom the locking plate to unlock the swing door in a second angular position of the locking shaft.
BRIEF DESCRIPTION OF THE DRAWINGS
A preferred embodiment of the invention is now described belo~~ with reference to t:he accompanying drawings in which, Fig. 1 is an assembly drawing showing a strike plate for mounting to a cabinet;
I?ig. 2 is an assembly drawing showing a barrel lock in association with a door bracket in accordance with the invention;
Fig. 3 is a side elevation view of the door lock in accordance with the invention associated with a swing door and cabinet assembly;
Fig. 4 is a similar view to Fig. 2 from the opposite side and showing the door lock assembly in association with a swing door and cabinet assembly;
Fig. 5 is a similar view to Fig. 3 showing a first alternative embodiment of the invention;
Fig. 6 is a similar view to Fig. 2 showing a second alternative embodiment of the invention;
Fig. 7 is a similax view to Fig. 3 showing second alternative embodiment of Fig. 6; and Fig. 8 is a perspective view of alternative embodiment.
DESCRIPTION OF PREFERRED EMBODIMENT
As indicated above, the invention relates to a door lock which is used to secure a swing door which is hinged to a cabinet and finds particular application to refrigerated c:abinets which are used for self serve access to cold beverages or other refrigerated items.
(Jnly portions of a refrigerated cabinet are shown in the accompanying drawings as their basic structure is already well-known to those skilled in the art.
In Fig.1, there is illustrated the top left corner of a cabinet generally indicated by the numeral 20 and having an upper wall 22 disposed horizontally adjacent to a vertically extending side wall 24. Together, the upper wall and side wall define a front opening 26 for accessing the cabinet interior. A door 28 (Fig. 3) is hinged to the right of the cabinet opening 26 (as drawn), in a manner which is well known in the art and which is not shown in the drawings.
It will be appreciated that the swing door 28 may alternatively be hung on the left side of the cabinet which conveniently is pre-drilled with suitable threaded openings 30 adapted to receive mounting bolts 32.
Conveniently, a strike plate 34 forming part of the lock assembly of the invention is mounted to the cabinet 20 using the pre-drilled threaded openings 30 and mounting bolts 32, thereby greatly facilitating field installation of the lock assembly. The strike plate 34 comprises a sheet metal plate bent into a U-shaped configuration and defining a mounting plate 36 which is apertured to receive the mounting bolts 32 and, in use, is disposed adjacent to the cabinet 20. A locking plate 38 is forwardly spaced from the mounting plate 36 by a transversely-extending connecting web 40 and is somewhat shorter in height than the mounting plate so as to permit ready access to the mounting bolts 32 and associated washers 33. A rectangular opening 42 is formed in the locking plate 38 and is adapted to receive a locking member 90 as will be described in more detail further belo~~.
A door bracket in the form of a "saddle" cooperates with a free edge of the swing door 28 and is generally indicated in Figs. 2 to 4 by reference numeral 44.
The door bracket comprises an outer door plate 46 having a first vertically extending portion 48 (as drawn) which, in use, locates against the outer surface 51 of the swing door 28, a first horizontally extending portion 50 which is orthogonal to the first vertically extending portion and locates against the top free edge 52 of the swing door, a second vertically extending lock receiving portion 54 having a square opening 56 (Fig. 2) formed therein and adapted to receive a barrel lock 58. A second horizontal portion 60 extends further inwardly toward the cabinet 2.0 and is spaced by the second vertically-extending portion 54 so as to overhang the connecting web 40 of the strike plate 34.
The door bracket further comprises an inner door plate 62 which, likewise, has a first vertically extending portion 64 (as drawn) which, in use, is adapted to locate against an inner surface G6 of the swing door 28. The inner door plate 62 also has a first horizontal portion 68 which is adapted to locate against the top free edge 52 of the door and a second vertically extending portion 70 comprising spaced apart flanges and dimensioned to be accommodated under the second horizontal portion 60 of the outer door plate 46.
The outer door plate 46 and inner door plate G2 each have transversely spaced apemires 74, 72 respectively in their second vertically extending portions 54, 70 which receive a pair of fasteners 76.
The barrel lock 58 comprises a spring-biased key-operated barrel plunger 78 which is. rotatably received in a barrel housing 80 mounted to a base plate 82 which defines a pair of outwardly extending flanges on opposite sides of the barrel lock and each having a threaded aperture 84 adapted to cooperate with the fasteners 76. In the embodiment illustrated, the barrel lock 58 is permanently mounted to the saddle bracket such that the barrel housing 80 is received in the square opening 56 of the outer door plate 4G and the base plate 82 is sandwiched between the inner and outer door plates 62, 46, as can be seen most clearly in Fig. 3.
The internal construction of the barrel lock is not shown in the drawings but will be apparent to those skilled in the art. A locking shaft 86 (Fig. 4) is coupled to the barrel plunger 78 for rotation with the barrel upon operation of a key 88 (not shown). The locking shaft 8G has a locking member in the form of a T-bolt 90 which is dimensioned to be received between the flanges of the second vertical portion 70 and through the rectangular opening 42 in the locking plate 38 of the strike plate 34. It will be understood that the T-bolt 90 can slide in and out of the opening 42 in an unlocked angular orientation of the barrel plunger 78 and that the T-bolt 90 is adapted to locate against the locking plate 38 in other angular positions of the barrel plunger and the associated locking shaft 86.
In use, the door bracket and barrel lock assembly can be removed from the cabinet 2;0 by releasing the T-bolt 9U from the strike plate 34. In this way, there are no unsightly devices which are exposed to view during normal operating hours, the only permanently attached portion of the lock assembly being the strike plate 34. Also, since the strike plate 34 is mounted using the existing pre-drilled holes for alternative location of the swing door 28 on the cabinet 20, there is no permanent deformation of the cabinet and the door is left unmarred.
It will be appreciated that the lock assembly is intended to be used as a deterrent only itz order to discourage pilfering. To some extent, the second horizontal portion GO of the outer door plate 46 obstructs access to the locking shaft 86 in order to minimize tampering with the device. However, the lock assembly is not intended to be used to protect any valuables in the associated cabinet.
In a first alternative embodiment of the invention, the lock assembly indicated by reference numeral 92 in Fig. 5 comprises a strike plate 34 which is similar to that in Figs. 1 to 4 and has like parts identified by like numerals. However, the door bracket 94 does not include an inner door plate 62. The remaining components of the door bracket 94 are identified by like numerals to those used in Figs. 1 to 4. It will be seen that the barrel lock ~i8 is therefore fixed directly to the door bracket 94 and is stabilized when the T-bolt 90 Engages the locking plate 38.
In a second alternative embodiment of the invention drawn in Figs. 6 and 7, the door bracket is identified by reference numeral 96 and comprises inner and outer door plates 98, 100, each having a respective first vertical portion 102, 104 adapted to lie against the inner a.nd outer surfaces of a door 28, oppositely directed horizontal portions 106, 108 adapted to lie on the top free edge of the door 28, and respective second vertical portions 110, 112 extending upwardly above the associated door, the second vertical portions having respective openings 114, 116 formed therein to receive a cam lock assembly 118.
The cam lock assembly 118 has a key-operated locking shaft 120 having a squared end and rotatable inside a housing 122 having flat sides on opposite sides thereof for location in the openings 114, 116 which likewise have flat sides. The remainder of the housing 122 is threaded for cooperation with a thxeaded washer 124 whereby the cam lock assembly 118 is secured to the door bracket 96.
A locking member in the form of a pawl 126 pivoted to the locking shaft 120 is adapted to pivot with angular movement of the locking shaft 120 actuated by a key (not shown) and received in key slot 128. The pawl 126 has a square opening 130 to fit on the squared end of the locking shaft 120 and is secured in position by a washer 132 and a bolt 7.34 received in a threaded opening (not shown) formed in the end of the locking shaft 120.
A strike plate generally indicated by numeral 136, in Fig. 7, has a mounting plate 138 attached to a cabinet 20 by fasteners 140 and a locking plate 142 is spaced from the mounting plate 138 to receive the pawl 126 therebetween. It will be understood that the pawl 126 may be pivoted to a horizontal orientation where the cam lock assembly 118 is in a, release position and it may be pivoted to a vertical orientation, as drawn, where the pawl 126 locates against the locking plate 142 to lock the swing door 28 to the cabinet 20.
In this embodiment, the locking plate is nat apertured to receive the locking member, unlike the embodiment of Figs. 1 to 4. Several other variations may be made to the embodiments described above, within the scope of the appended claims.
It will be appreciated that many cabinets are constructed so that the upper wall 22 aloes project upwardly above the maximum height of the associated door 28, as drawn in t:he accompanying figures. Conveniently, the lock assembly of the invention will occupy the space between the upper free edge of the door and the cabinet and only protrude a small height above the cabinet. However, it will be appreciated that the lock assembly may also h~e modified so that it will be suitable for cabinets in which the door is mounted so that its free edge is of commensurate height as the cabinet upper wall and, alternatively, could be adapted for mounting to the side wall of the cabinet as the case may be.
For example, in an alternative embodiment shown in Figure 8, the lock assembly indicated by reference numeral 150 comprises a strike plate 152 attached to a side of the c:abinet. The strike plate 152 comprises a metal plate bent to define a locking plate 154 (38).
A door bracket generally indicated by reference numeral 156 (44) cooperates with a free side edge of the door 28. The door bracket 156 has an outer door plate 158 (48) which locates against the outer surface 160 of the door and a transverse portion orthogonal 162 (50) to the first portion and adapted with and locate against the side free edge 164 of the door. A
lock receiving portion 166 is orthogonal to the transverse portion 162 and has an opening 7.68 adapted to receive a lock 170. An extending portion 172 extends inwardly towards the c;abinet over the strike plate 154. The door bracket further comprises an inner door plate 7.74 which has corresponding plates adapted to fit onto the inner surface of the door. The inner door plate and the outer door plate both have apertures in their lock receiving portions which receive a pair of fasteners 178. Other variations may be made to the invention, as will be apparent to those skilled in the art.
_g_
The door bracket comprises an outer door plate 46 having a first vertically extending portion 48 (as drawn) which, in use, locates against the outer surface 51 of the swing door 28, a first horizontally extending portion 50 which is orthogonal to the first vertically extending portion and locates against the top free edge 52 of the swing door, a second vertically extending lock receiving portion 54 having a square opening 56 (Fig. 2) formed therein and adapted to receive a barrel lock 58. A second horizontal portion 60 extends further inwardly toward the cabinet 2.0 and is spaced by the second vertically-extending portion 54 so as to overhang the connecting web 40 of the strike plate 34.
The door bracket further comprises an inner door plate 62 which, likewise, has a first vertically extending portion 64 (as drawn) which, in use, is adapted to locate against an inner surface G6 of the swing door 28. The inner door plate 62 also has a first horizontal portion 68 which is adapted to locate against the top free edge 52 of the door and a second vertically extending portion 70 comprising spaced apart flanges and dimensioned to be accommodated under the second horizontal portion 60 of the outer door plate 46.
The outer door plate 46 and inner door plate G2 each have transversely spaced apemires 74, 72 respectively in their second vertically extending portions 54, 70 which receive a pair of fasteners 76.
The barrel lock 58 comprises a spring-biased key-operated barrel plunger 78 which is. rotatably received in a barrel housing 80 mounted to a base plate 82 which defines a pair of outwardly extending flanges on opposite sides of the barrel lock and each having a threaded aperture 84 adapted to cooperate with the fasteners 76. In the embodiment illustrated, the barrel lock 58 is permanently mounted to the saddle bracket such that the barrel housing 80 is received in the square opening 56 of the outer door plate 4G and the base plate 82 is sandwiched between the inner and outer door plates 62, 46, as can be seen most clearly in Fig. 3.
The internal construction of the barrel lock is not shown in the drawings but will be apparent to those skilled in the art. A locking shaft 86 (Fig. 4) is coupled to the barrel plunger 78 for rotation with the barrel upon operation of a key 88 (not shown). The locking shaft 8G has a locking member in the form of a T-bolt 90 which is dimensioned to be received between the flanges of the second vertical portion 70 and through the rectangular opening 42 in the locking plate 38 of the strike plate 34. It will be understood that the T-bolt 90 can slide in and out of the opening 42 in an unlocked angular orientation of the barrel plunger 78 and that the T-bolt 90 is adapted to locate against the locking plate 38 in other angular positions of the barrel plunger and the associated locking shaft 86.
In use, the door bracket and barrel lock assembly can be removed from the cabinet 2;0 by releasing the T-bolt 9U from the strike plate 34. In this way, there are no unsightly devices which are exposed to view during normal operating hours, the only permanently attached portion of the lock assembly being the strike plate 34. Also, since the strike plate 34 is mounted using the existing pre-drilled holes for alternative location of the swing door 28 on the cabinet 20, there is no permanent deformation of the cabinet and the door is left unmarred.
It will be appreciated that the lock assembly is intended to be used as a deterrent only itz order to discourage pilfering. To some extent, the second horizontal portion GO of the outer door plate 46 obstructs access to the locking shaft 86 in order to minimize tampering with the device. However, the lock assembly is not intended to be used to protect any valuables in the associated cabinet.
In a first alternative embodiment of the invention, the lock assembly indicated by reference numeral 92 in Fig. 5 comprises a strike plate 34 which is similar to that in Figs. 1 to 4 and has like parts identified by like numerals. However, the door bracket 94 does not include an inner door plate 62. The remaining components of the door bracket 94 are identified by like numerals to those used in Figs. 1 to 4. It will be seen that the barrel lock ~i8 is therefore fixed directly to the door bracket 94 and is stabilized when the T-bolt 90 Engages the locking plate 38.
In a second alternative embodiment of the invention drawn in Figs. 6 and 7, the door bracket is identified by reference numeral 96 and comprises inner and outer door plates 98, 100, each having a respective first vertical portion 102, 104 adapted to lie against the inner a.nd outer surfaces of a door 28, oppositely directed horizontal portions 106, 108 adapted to lie on the top free edge of the door 28, and respective second vertical portions 110, 112 extending upwardly above the associated door, the second vertical portions having respective openings 114, 116 formed therein to receive a cam lock assembly 118.
The cam lock assembly 118 has a key-operated locking shaft 120 having a squared end and rotatable inside a housing 122 having flat sides on opposite sides thereof for location in the openings 114, 116 which likewise have flat sides. The remainder of the housing 122 is threaded for cooperation with a thxeaded washer 124 whereby the cam lock assembly 118 is secured to the door bracket 96.
A locking member in the form of a pawl 126 pivoted to the locking shaft 120 is adapted to pivot with angular movement of the locking shaft 120 actuated by a key (not shown) and received in key slot 128. The pawl 126 has a square opening 130 to fit on the squared end of the locking shaft 120 and is secured in position by a washer 132 and a bolt 7.34 received in a threaded opening (not shown) formed in the end of the locking shaft 120.
A strike plate generally indicated by numeral 136, in Fig. 7, has a mounting plate 138 attached to a cabinet 20 by fasteners 140 and a locking plate 142 is spaced from the mounting plate 138 to receive the pawl 126 therebetween. It will be understood that the pawl 126 may be pivoted to a horizontal orientation where the cam lock assembly 118 is in a, release position and it may be pivoted to a vertical orientation, as drawn, where the pawl 126 locates against the locking plate 142 to lock the swing door 28 to the cabinet 20.
In this embodiment, the locking plate is nat apertured to receive the locking member, unlike the embodiment of Figs. 1 to 4. Several other variations may be made to the embodiments described above, within the scope of the appended claims.
It will be appreciated that many cabinets are constructed so that the upper wall 22 aloes project upwardly above the maximum height of the associated door 28, as drawn in t:he accompanying figures. Conveniently, the lock assembly of the invention will occupy the space between the upper free edge of the door and the cabinet and only protrude a small height above the cabinet. However, it will be appreciated that the lock assembly may also h~e modified so that it will be suitable for cabinets in which the door is mounted so that its free edge is of commensurate height as the cabinet upper wall and, alternatively, could be adapted for mounting to the side wall of the cabinet as the case may be.
For example, in an alternative embodiment shown in Figure 8, the lock assembly indicated by reference numeral 150 comprises a strike plate 152 attached to a side of the c:abinet. The strike plate 152 comprises a metal plate bent to define a locking plate 154 (38).
A door bracket generally indicated by reference numeral 156 (44) cooperates with a free side edge of the door 28. The door bracket 156 has an outer door plate 158 (48) which locates against the outer surface 160 of the door and a transverse portion orthogonal 162 (50) to the first portion and adapted with and locate against the side free edge 164 of the door. A
lock receiving portion 166 is orthogonal to the transverse portion 162 and has an opening 7.68 adapted to receive a lock 170. An extending portion 172 extends inwardly towards the c;abinet over the strike plate 154. The door bracket further comprises an inner door plate 7.74 which has corresponding plates adapted to fit onto the inner surface of the door. The inner door plate and the outer door plate both have apertures in their lock receiving portions which receive a pair of fasteners 178. Other variations may be made to the invention, as will be apparent to those skilled in the art.
_g_
Claims (4)
1. A lock assembly for a swing door hinged to a cabinet, the lock assembly comprising:
a strike plate having a mounting plate adapted to be mounted to the cabinet, and a locking plate forwardly spaced from the mounting plate by transversely extending connecting web portion, the mounting plate and the locking plate being substantially parallel to each other;
a door bracket having an outer door plate adapted to locate on an outer surface of the swing door and inner door plate adapted to locate on an inner surface of the swing door, and coupling means joining said outer door plate and inner door plate so that a free edge of the swing door may be received therebetween;
and a locking member mounted to the door bracket, the locking member having a key-operated locking shaft coupled to the locking member for rotation therewith, the locking member being adapted to be disposed between the mounting plate and locking plate of the strike plate, and to locate against the locking plate to lock the swing door to the cabinet in a first angular position of the locking shaft, and the locking member being adapted to be released from the locking plate to unlock the swing door in a second angular position of the locking shaft.
a strike plate having a mounting plate adapted to be mounted to the cabinet, and a locking plate forwardly spaced from the mounting plate by transversely extending connecting web portion, the mounting plate and the locking plate being substantially parallel to each other;
a door bracket having an outer door plate adapted to locate on an outer surface of the swing door and inner door plate adapted to locate on an inner surface of the swing door, and coupling means joining said outer door plate and inner door plate so that a free edge of the swing door may be received therebetween;
and a locking member mounted to the door bracket, the locking member having a key-operated locking shaft coupled to the locking member for rotation therewith, the locking member being adapted to be disposed between the mounting plate and locking plate of the strike plate, and to locate against the locking plate to lock the swing door to the cabinet in a first angular position of the locking shaft, and the locking member being adapted to be released from the locking plate to unlock the swing door in a second angular position of the locking shaft.
2. A lock assembly for a swing door hinged to a cabinet, the lock assembly comprising;
a strike plate adapted to be mounted to the cabinet, the strike plate having a mounting plate apertured to receive at least one fastener to secure the strike plate to the cabinet and a locking plate forwardly spaced from the mounting plate by a transversely extending connecting web portion, the mounting plate and the locking plate being substantially parallel to each other, and the locking plate having an opening for receiving a locking member;
a door bracket having an outer door plate adapted to locate on an outer surface of the swing door, a transverse portion adapted to locate against a free edge of the swing door, a lock receiving portion extending outwardly from said free edge of the swing door, the transverse portion coupling said lock receiving portion to said outer door plate, an inner door plate adapted to locate on an inner surface of the swing door, and coupling means joining said outer door plate and inner door plate so that said free edge of the swing door may be received therebetween;
and a barrel lock mounted to the door bracket so as to be received by said lock receiving portion outside the swing door, the barrel lock comprising a key-operated barrel plunger rotatably received in a barrel housing and having a locking shaft coupled to the plunger for rotation therewith, the locking shaft having a locking member adapted to locate against the locking plate to lock the swing door to the cabinet in a first angular position of the locking shaft, the locking member being dimensioned to be received through said opening in the locking plate in a second angular position of the locking shaft so as to be released from the locking plate to unlock the swing door.
a strike plate adapted to be mounted to the cabinet, the strike plate having a mounting plate apertured to receive at least one fastener to secure the strike plate to the cabinet and a locking plate forwardly spaced from the mounting plate by a transversely extending connecting web portion, the mounting plate and the locking plate being substantially parallel to each other, and the locking plate having an opening for receiving a locking member;
a door bracket having an outer door plate adapted to locate on an outer surface of the swing door, a transverse portion adapted to locate against a free edge of the swing door, a lock receiving portion extending outwardly from said free edge of the swing door, the transverse portion coupling said lock receiving portion to said outer door plate, an inner door plate adapted to locate on an inner surface of the swing door, and coupling means joining said outer door plate and inner door plate so that said free edge of the swing door may be received therebetween;
and a barrel lock mounted to the door bracket so as to be received by said lock receiving portion outside the swing door, the barrel lock comprising a key-operated barrel plunger rotatably received in a barrel housing and having a locking shaft coupled to the plunger for rotation therewith, the locking shaft having a locking member adapted to locate against the locking plate to lock the swing door to the cabinet in a first angular position of the locking shaft, the locking member being dimensioned to be received through said opening in the locking plate in a second angular position of the locking shaft so as to be released from the locking plate to unlock the swing door.
3. A lock assembly for a swing door hinged to a cabinet, the lock assembly comprising:
a strike plate having a mounting plate adapted to be mounted to the cabinet, and a locking plate spaced from the mounting plate;
a door bracket having an outer door plate adapted to locate on an outer surface of the swing door, a transverse portion adapted to locate against a free edge of the swing door, and a lock receiving portion extending outwardly from said free edge of the swing door, the transverse portion coupling said lock receiving portion to said outer door plate;
and a locking member mounted to the door bracket so as to be received by said lock receiving portion outside the swing door, the locking member having a key-operated locking shaft coupled to the locking member for rotation therewith, the locking member being adapted to be disposed between the mounting plate and locking plate of the strike plate, and to locate against the locking plate to lock the swing door to the cabinet in a first angular position of the locking shaft, and the locking member being adapted to be released from the locking plate to unlock the swing door in a second angular position of the locking shift.
a strike plate having a mounting plate adapted to be mounted to the cabinet, and a locking plate spaced from the mounting plate;
a door bracket having an outer door plate adapted to locate on an outer surface of the swing door, a transverse portion adapted to locate against a free edge of the swing door, and a lock receiving portion extending outwardly from said free edge of the swing door, the transverse portion coupling said lock receiving portion to said outer door plate;
and a locking member mounted to the door bracket so as to be received by said lock receiving portion outside the swing door, the locking member having a key-operated locking shaft coupled to the locking member for rotation therewith, the locking member being adapted to be disposed between the mounting plate and locking plate of the strike plate, and to locate against the locking plate to lock the swing door to the cabinet in a first angular position of the locking shaft, and the locking member being adapted to be released from the locking plate to unlock the swing door in a second angular position of the locking shift.
4, A lock assembly for a swing door hinged to a cabinet, the lock assembly comprising:
a strike plate having a mounting plate adapted to be mounted to the cabinet, and a locking plate forwardly spaced from the mounting plate by a transversely extending connecting web portion, the mounting plate and the locking plate being substantially parallel to each other;
a door bracket having an outer door plate adapted to locate on an outer surface of the swing door, a transverse portion adapted to locate against a free edge of the swing door, and a lock receiving portion extending outwardly from said free edge of the swing door, the transverse portion coupling said lock receiving portion to said outer door plate, and a locking member mounted to the door bracket, so as to be received by said lock receiving portion outside the swing door, the locking member having a key-operated locking shaft coupled to the locking member for rotation therewith, the locking member being adapted to be disposed between the mounting plate and locking plate of the strike plate, and to locate against the locking plate to lock the swing door to the cabinet in a first angular position of the locking shaft, and the locking member being adapted to be released from the locking plate to unlock the swing door in a second position of the locking shaft.
a strike plate having a mounting plate adapted to be mounted to the cabinet, and a locking plate forwardly spaced from the mounting plate by a transversely extending connecting web portion, the mounting plate and the locking plate being substantially parallel to each other;
a door bracket having an outer door plate adapted to locate on an outer surface of the swing door, a transverse portion adapted to locate against a free edge of the swing door, and a lock receiving portion extending outwardly from said free edge of the swing door, the transverse portion coupling said lock receiving portion to said outer door plate, and a locking member mounted to the door bracket, so as to be received by said lock receiving portion outside the swing door, the locking member having a key-operated locking shaft coupled to the locking member for rotation therewith, the locking member being adapted to be disposed between the mounting plate and locking plate of the strike plate, and to locate against the locking plate to lock the swing door to the cabinet in a first angular position of the locking shaft, and the locking member being adapted to be released from the locking plate to unlock the swing door in a second position of the locking shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2243340 CA2243340C (en) | 1997-08-06 | 1998-07-15 | Swing door lock for refrigerated cabinet |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2,212,419 | 1997-08-06 | ||
| CA002212419A CA2212419A1 (en) | 1997-08-06 | 1997-08-06 | Swing door lock for cold space cabinet |
| CA 2243340 CA2243340C (en) | 1997-08-06 | 1998-07-15 | Swing door lock for refrigerated cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2243340A1 CA2243340A1 (en) | 1999-02-06 |
| CA2243340C true CA2243340C (en) | 2004-10-05 |
Family
ID=25679526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2243340 Expired - Lifetime CA2243340C (en) | 1997-08-06 | 1998-07-15 | Swing door lock for refrigerated cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2243340C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR0302212A (en) * | 2003-06-09 | 2005-03-22 | Multibras Eletrodomesticos Sa | Refrigerator cabinet lock |
-
1998
- 1998-07-15 CA CA 2243340 patent/CA2243340C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2243340A1 (en) | 1999-02-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20180716 |