CA1276504C - Door - Google Patents
DoorInfo
- Publication number
- CA1276504C CA1276504C CA000473805A CA473805A CA1276504C CA 1276504 C CA1276504 C CA 1276504C CA 000473805 A CA000473805 A CA 000473805A CA 473805 A CA473805 A CA 473805A CA 1276504 C CA1276504 C CA 1276504C
- Authority
- CA
- Canada
- Prior art keywords
- panel
- panel frame
- glass pane
- door
- torsion spring
- 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
Links
Landscapes
- Refrigerator Housings (AREA)
Abstract
ABSTRACT
A door assembly for refrigerating and freezing chambers comprising a door frame supporting a pivotable glazed panel. The latter includes at least one glass pane for viewing goods in the refrigerating or the freezing chamber, and a panel frame supporting the glass pane, the panel frame including an elongated panel frame member hingedly mounted to the door frame, provided with a U-shaped groove extending along the entire length thereof for receiving an edge of the glass pane. The panel frame member solely constitutes a supporting structure for the glass pane in the panel frame, whereby maximizing the transparent surface of the glazed panel. The panel frame further includes non loadbearing strips mounted along each of the remaining free edges of the glass pane. A torsion spring is mounted between the door frame and the panel frame to urge the glazed panel toward a closed position.
A door assembly for refrigerating and freezing chambers comprising a door frame supporting a pivotable glazed panel. The latter includes at least one glass pane for viewing goods in the refrigerating or the freezing chamber, and a panel frame supporting the glass pane, the panel frame including an elongated panel frame member hingedly mounted to the door frame, provided with a U-shaped groove extending along the entire length thereof for receiving an edge of the glass pane. The panel frame member solely constitutes a supporting structure for the glass pane in the panel frame, whereby maximizing the transparent surface of the glazed panel. The panel frame further includes non loadbearing strips mounted along each of the remaining free edges of the glass pane. A torsion spring is mounted between the door frame and the panel frame to urge the glazed panel toward a closed position.
Description
1~7~()4 TITLE: DOOR ASS~BLY
This invention relates to a glazed door for refrigerating or freezing chambers of the type used in everyday commodities trade, especially in grocery shops.
Refrigerating or freezing chambers are by such doors partitioned off from the remaining shop space, at the same time as the goods in the refrigerating or freezing chamber are exposed to the customers in the shop. Such doors are now relatively usually installed in grocery shops.
One great desire is that the transparent surface of such a door should cover as great a portion of the door as possible, whereby an exposing surface as great as posslble iY obtained. The aim, therefore, is that the door frames should be as narrow as possible.
Such doors, however, must be self-closlng and in thelr closed po~ition tightly abut with a certain force a sealing strip against the door case, ln order to effectively seal the refrigerating or freezing chamber when the door is closed.
The requiremen~ on the doors to be self-closing has enforced a relatively coarse frame on the side where the door is æuspended, in order to provide sufflcient space for necessary springs. Such doors, furthermore, are relatively wide, for example 600-800 mm, and at the same time must be provided with at least two glass pane~ for having a sufficient insulating effect. This has implied that also the remaining part of the frame had to be designed sturdy so as to be capable to sup~ort the glass panes.
The aforesaid desire is met by tha present invention, which offers a door haviny a very thin frame in relation to the door size. The door is at the same time self-closing and can support a single pane or an insulating 3~ pane comprising two or more panes.
,~
~276504 Therefore, the present invention comprlses ln a general aspect a door asæembly for refrigerat~ng and freezing chambers, comprising:
- a door frame including bearing means;
S - a glazed panel mounted in the door frame, the glazed panel including:
a) at lQast one glass pane ~or viewing ~oods in a chamber;
b) a panel fxame supporting the glass pane, the panel frame including an elongated panel frame member with a U-shaped groove extanding along the entire length thereof and receiving a single edge of the glass pane, the panel frame member solely constituting a supporting structure of the panel frame for the glass pane, the panel frame member comprising an inner cavity extending longitudinally along the entire length of the panel frame member, the panel frame further including at least one non-load bearing strip mounted along each of the remaining free edges of the glass pane;
- a torsion spring mounted in the cavity and extending along substantially the entire length of the panel frame member, the tor~ion spring having one end fixed relative to the door frame and an opposite end fixed relative to the panel frame;
- a nipple mounted to each end of the torsion spring, the nipple~ con~tituting journals recelved in the bearing means, whereby allowing a pivotal movement of the glazed panel in the door frame against the resiliency of the torsion sprin~.
The invention is described in greater detall ln the following, wlth reference to the accompanyin~ drawings, in which Fia. 1 is a view of a door assembly in accordance with the invention, Fi~. 2 shows a glazed panel accordlng to the invention on an enlarged scale, Fi~. 3 ls a section along the line A-A in Fig. 2, Fi~. 4 æhow~ portions of a 1~7~;~0~
vertical section at the upper and, raspectively, lower attachment of the glazed panel in the door frame.
Fig. 1 is a view of a door assembly including three glazed panels 1 mounted in a door frame 2 in a wall 3, which sapara~es a refriyerating or freezing chamber from a shop space or the like. The glazed panels comprise one or more glass panes 4 for exposing the goods in the refrigerating or freezing chamber. Handles 5 are provided for opening the glazed panels L.
The glazed panels 1 include a panel frame, which comprises a straight section 6 designed so as to support the glass 4 along only one vertical edge 7 of the glass 4.
At said edge 7 the glazed panel is intended to be suspended on the door frame 2.
The glass 4 preferably is fixed in the section 6 by glueing. For this purpose the section 6 is formed along its entire length with a groove 8 of U-shaped cross-section. The glue 9 is marked by dotted area in Fig. 3.
In Fig. 3 the glass is a two-pane insulating glass o~
conventional design.
Along the entire length of the section 6 an inner cavity 10 i5 provided, in which a torsion spring 11 extends substantially along the entire length of the section 6. The torsion spring 11 is fixed at one end relative to the section 6 and at its other end relative to the door frame 2, as shown by way of example in Fig. 4.
According to a pre~erred embodiment, the torsion spring 11 is square in cross-section. Square cross-section in combination with a great length implies that the torsion spring delivers uniform spring force, i.e.
uniform resistance to turning the glazed panel in all it~
turning positions. It is hereby achieved that the glazed panel even in its closed position abuts the door frame with sufficient force and at the same time is not slow to open. It may be mentioned that in the case of short !, . .
~7~;sa)~
torsion sprlngs, when the ~orce in closed position shall be sufficient, tha resistance to maintain the glazed panel in open position i5 troublesome great.
In Fig. 4 portions o~ a vertical sectlon at the upper 12 andr respectively, lower 13 attachment of the glazed panel 1 in the door frame 2 are shown. The torsion spring 11 is at least at one end 12 connected to a nipple 1~,15 or the like ~ormed as a journal 8, which is intended to be suspended non-rotary in a corresponding bearing place 20 in the door frame 2.
According to a preferred embodiment, also the other end o~ the torsion spring 11 is connected to a nipple 16 or the llke, which i~ in~ended to he suspended pivotally ln a corresponding bearing place 21 in the door frame 2.
The nipples 14-16, of course, can be designed in any suitable way, irrespective of that one end of the torsion spring shall be connected non-rotary to the door frame 2, and the other end shall be connected non-rotary to the section 6.
At the embodiment in Fig. 4, the nipple at the upper end conslsts of two nipples 14,15.
At one nipple 14 the square torsion spring 11 projects into a square bore. The second, upper, nipple 15 is square and projects into the lower nipple 14. The upper portion of the upper nipple iæ a square journal 18, which is attached non-rotary in the bearing place 20 in the door frame 2. At its lower end the torsion spring 11 is connected to the nipple 16, which at its upper portion has a square bore, and which at lts lower end has a square journal 17. Said journal 17 is inserted into a bushing 22, which ls square in~ernally and round externally. The bushing 22 is inserted down into the bearing place 21 in the door frame 2.
In order to attach the torsion spring 11 non-rotary relative to the section 6 r a threaded bore 23 is made in ~, ~}
, 7650~
the section 6 close to its lower end. A screw 24, preferably a so-called æocket head cap screw, is screwn into the bore 23 and intended to act against the torsion sprlng 11.
When the spring is to be stretched, its upper end is locked by the journal 18. The screw 24 is loosened, and the spring is turned in that the journal 17 is turned by means of a suitable tool, whereafter the screw ls tightened.
By designing the attachment members in the form o~
nipples at the ends of a long torsion spring, the section 6 can be designed extremely tenderly, at the same time as a good spring action is obtained. The dimenslon L1 in Fig. 3. is only a few centimeters. A dimension used at test doors is 28 mm at a total door width o~ 700 mm.
About the remaining three sides o~ the glass 4 a light-weight and tender strip 25 can be attached, which is not required to have any carrying capacity. At ~ertain designs, a strip of only thin stainless sheet metal can be used. The dimension L2 of the s~rip 25 in Fig. 3, of course, can be smaller than the dimension L1. The dimension L2, for example, can be 10-20 mm.
A sealing strip in the form of a so-called magnet strip preferably is provided on the strip 25 or door frame in order to ensure yood abutment between the panel frame and the door frame when the glazed panel is in a closed position.
It is fully obvious that such a panel frame in the form of said section 6 and strips 25 implies that substantially the entire surface of the panel is transparent.
The suspension of the glazed panel, furthermore, and its built-in springs imply that obscuring external spring attachments can be avoided, which also implies that door frame pillars located between two adjacent glazed panels ~1.2'76';~4 can be designed narrower than before, whereby the surface of the entire door arrangement substantlally is transparent.
Due to the very narrow panel frame, the said handles 5 are attached directly to the glass pane located farthest away from the refrigerating or freezing chamber. The handle preferably is of transparent glass and glued onto ~he pane with a transparent glue, which additionally contributes to an increase of the exposing surface.
It was mentioned above that the section 6 is glued onto the ylass 4.
Another attachm0nt method, of course, can be used, for example a screw connection.
As mentioned above, also the attachment of the torsion spring in the door frame and, respectively, the glazed panel can be varied in several ways. Such modifications are considered comprised in the present invention.
The invention, thus, must not be regarded restricted to the embodiment described above, but can be varied within the SCOp2 of the attached claims.
" , l ~ ..
This invention relates to a glazed door for refrigerating or freezing chambers of the type used in everyday commodities trade, especially in grocery shops.
Refrigerating or freezing chambers are by such doors partitioned off from the remaining shop space, at the same time as the goods in the refrigerating or freezing chamber are exposed to the customers in the shop. Such doors are now relatively usually installed in grocery shops.
One great desire is that the transparent surface of such a door should cover as great a portion of the door as possible, whereby an exposing surface as great as posslble iY obtained. The aim, therefore, is that the door frames should be as narrow as possible.
Such doors, however, must be self-closlng and in thelr closed po~ition tightly abut with a certain force a sealing strip against the door case, ln order to effectively seal the refrigerating or freezing chamber when the door is closed.
The requiremen~ on the doors to be self-closing has enforced a relatively coarse frame on the side where the door is æuspended, in order to provide sufflcient space for necessary springs. Such doors, furthermore, are relatively wide, for example 600-800 mm, and at the same time must be provided with at least two glass pane~ for having a sufficient insulating effect. This has implied that also the remaining part of the frame had to be designed sturdy so as to be capable to sup~ort the glass panes.
The aforesaid desire is met by tha present invention, which offers a door haviny a very thin frame in relation to the door size. The door is at the same time self-closing and can support a single pane or an insulating 3~ pane comprising two or more panes.
,~
~276504 Therefore, the present invention comprlses ln a general aspect a door asæembly for refrigerat~ng and freezing chambers, comprising:
- a door frame including bearing means;
S - a glazed panel mounted in the door frame, the glazed panel including:
a) at lQast one glass pane ~or viewing ~oods in a chamber;
b) a panel fxame supporting the glass pane, the panel frame including an elongated panel frame member with a U-shaped groove extanding along the entire length thereof and receiving a single edge of the glass pane, the panel frame member solely constituting a supporting structure of the panel frame for the glass pane, the panel frame member comprising an inner cavity extending longitudinally along the entire length of the panel frame member, the panel frame further including at least one non-load bearing strip mounted along each of the remaining free edges of the glass pane;
- a torsion spring mounted in the cavity and extending along substantially the entire length of the panel frame member, the tor~ion spring having one end fixed relative to the door frame and an opposite end fixed relative to the panel frame;
- a nipple mounted to each end of the torsion spring, the nipple~ con~tituting journals recelved in the bearing means, whereby allowing a pivotal movement of the glazed panel in the door frame against the resiliency of the torsion sprin~.
The invention is described in greater detall ln the following, wlth reference to the accompanyin~ drawings, in which Fia. 1 is a view of a door assembly in accordance with the invention, Fi~. 2 shows a glazed panel accordlng to the invention on an enlarged scale, Fi~. 3 ls a section along the line A-A in Fig. 2, Fi~. 4 æhow~ portions of a 1~7~;~0~
vertical section at the upper and, raspectively, lower attachment of the glazed panel in the door frame.
Fig. 1 is a view of a door assembly including three glazed panels 1 mounted in a door frame 2 in a wall 3, which sapara~es a refriyerating or freezing chamber from a shop space or the like. The glazed panels comprise one or more glass panes 4 for exposing the goods in the refrigerating or freezing chamber. Handles 5 are provided for opening the glazed panels L.
The glazed panels 1 include a panel frame, which comprises a straight section 6 designed so as to support the glass 4 along only one vertical edge 7 of the glass 4.
At said edge 7 the glazed panel is intended to be suspended on the door frame 2.
The glass 4 preferably is fixed in the section 6 by glueing. For this purpose the section 6 is formed along its entire length with a groove 8 of U-shaped cross-section. The glue 9 is marked by dotted area in Fig. 3.
In Fig. 3 the glass is a two-pane insulating glass o~
conventional design.
Along the entire length of the section 6 an inner cavity 10 i5 provided, in which a torsion spring 11 extends substantially along the entire length of the section 6. The torsion spring 11 is fixed at one end relative to the section 6 and at its other end relative to the door frame 2, as shown by way of example in Fig. 4.
According to a pre~erred embodiment, the torsion spring 11 is square in cross-section. Square cross-section in combination with a great length implies that the torsion spring delivers uniform spring force, i.e.
uniform resistance to turning the glazed panel in all it~
turning positions. It is hereby achieved that the glazed panel even in its closed position abuts the door frame with sufficient force and at the same time is not slow to open. It may be mentioned that in the case of short !, . .
~7~;sa)~
torsion sprlngs, when the ~orce in closed position shall be sufficient, tha resistance to maintain the glazed panel in open position i5 troublesome great.
In Fig. 4 portions o~ a vertical sectlon at the upper 12 andr respectively, lower 13 attachment of the glazed panel 1 in the door frame 2 are shown. The torsion spring 11 is at least at one end 12 connected to a nipple 1~,15 or the like ~ormed as a journal 8, which is intended to be suspended non-rotary in a corresponding bearing place 20 in the door frame 2.
According to a preferred embodiment, also the other end o~ the torsion spring 11 is connected to a nipple 16 or the llke, which i~ in~ended to he suspended pivotally ln a corresponding bearing place 21 in the door frame 2.
The nipples 14-16, of course, can be designed in any suitable way, irrespective of that one end of the torsion spring shall be connected non-rotary to the door frame 2, and the other end shall be connected non-rotary to the section 6.
At the embodiment in Fig. 4, the nipple at the upper end conslsts of two nipples 14,15.
At one nipple 14 the square torsion spring 11 projects into a square bore. The second, upper, nipple 15 is square and projects into the lower nipple 14. The upper portion of the upper nipple iæ a square journal 18, which is attached non-rotary in the bearing place 20 in the door frame 2. At its lower end the torsion spring 11 is connected to the nipple 16, which at its upper portion has a square bore, and which at lts lower end has a square journal 17. Said journal 17 is inserted into a bushing 22, which ls square in~ernally and round externally. The bushing 22 is inserted down into the bearing place 21 in the door frame 2.
In order to attach the torsion spring 11 non-rotary relative to the section 6 r a threaded bore 23 is made in ~, ~}
, 7650~
the section 6 close to its lower end. A screw 24, preferably a so-called æocket head cap screw, is screwn into the bore 23 and intended to act against the torsion sprlng 11.
When the spring is to be stretched, its upper end is locked by the journal 18. The screw 24 is loosened, and the spring is turned in that the journal 17 is turned by means of a suitable tool, whereafter the screw ls tightened.
By designing the attachment members in the form o~
nipples at the ends of a long torsion spring, the section 6 can be designed extremely tenderly, at the same time as a good spring action is obtained. The dimenslon L1 in Fig. 3. is only a few centimeters. A dimension used at test doors is 28 mm at a total door width o~ 700 mm.
About the remaining three sides o~ the glass 4 a light-weight and tender strip 25 can be attached, which is not required to have any carrying capacity. At ~ertain designs, a strip of only thin stainless sheet metal can be used. The dimension L2 of the s~rip 25 in Fig. 3, of course, can be smaller than the dimension L1. The dimension L2, for example, can be 10-20 mm.
A sealing strip in the form of a so-called magnet strip preferably is provided on the strip 25 or door frame in order to ensure yood abutment between the panel frame and the door frame when the glazed panel is in a closed position.
It is fully obvious that such a panel frame in the form of said section 6 and strips 25 implies that substantially the entire surface of the panel is transparent.
The suspension of the glazed panel, furthermore, and its built-in springs imply that obscuring external spring attachments can be avoided, which also implies that door frame pillars located between two adjacent glazed panels ~1.2'76';~4 can be designed narrower than before, whereby the surface of the entire door arrangement substantlally is transparent.
Due to the very narrow panel frame, the said handles 5 are attached directly to the glass pane located farthest away from the refrigerating or freezing chamber. The handle preferably is of transparent glass and glued onto ~he pane with a transparent glue, which additionally contributes to an increase of the exposing surface.
It was mentioned above that the section 6 is glued onto the ylass 4.
Another attachm0nt method, of course, can be used, for example a screw connection.
As mentioned above, also the attachment of the torsion spring in the door frame and, respectively, the glazed panel can be varied in several ways. Such modifications are considered comprised in the present invention.
The invention, thus, must not be regarded restricted to the embodiment described above, but can be varied within the SCOp2 of the attached claims.
" , l ~ ..
Claims (3)
1. A door assembly for refrigerating and freezing chambers, comprising:
- a door frame including bearing means;
- a glazed panel mounted in said door frame, said glazed panel including:
a) a glass pane for viewing goods in a chamber;
b) a panel frame supporting said glass pane, said panel frame including an elongated panel frame member with a U-shaped groove extending along the entire length thereof and receiving a single edge of said glass pane, said panel frame member solely constituting a supporting structure of said panel frame for said glass pane, said panel frame member comprising an inner cavity extending longitudinally along the entire length of said panel frame member, said panel frame further including at least one non-load bearing strip mounted along each of the remaining free edges of said glass pane;
- a torsion spring mounted in said cavity and extending along substantially the entire length of said panel frame member, said torsion spring having one end fixed relative to said door frame and an opposite end fixed relative to said panel frame;
- a respective nipple mounted to each end of said torsion spring, the nipples constituting journals '?
cooperating with said bearing means, whereby allowing a pivotal movement of said glazed panel in said door frame against the resiliency of said torsion spring.
- a door frame including bearing means;
- a glazed panel mounted in said door frame, said glazed panel including:
a) a glass pane for viewing goods in a chamber;
b) a panel frame supporting said glass pane, said panel frame including an elongated panel frame member with a U-shaped groove extending along the entire length thereof and receiving a single edge of said glass pane, said panel frame member solely constituting a supporting structure of said panel frame for said glass pane, said panel frame member comprising an inner cavity extending longitudinally along the entire length of said panel frame member, said panel frame further including at least one non-load bearing strip mounted along each of the remaining free edges of said glass pane;
- a torsion spring mounted in said cavity and extending along substantially the entire length of said panel frame member, said torsion spring having one end fixed relative to said door frame and an opposite end fixed relative to said panel frame;
- a respective nipple mounted to each end of said torsion spring, the nipples constituting journals '?
cooperating with said bearing means, whereby allowing a pivotal movement of said glazed panel in said door frame against the resiliency of said torsion spring.
2. A door assembly as defined in claim 1, wherein said torsion spring is square in cross-section.
3. A door assembly as defined in claims 1 or 2, further comprising a handle attached to said glass pane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000473805A CA1276504C (en) | 1985-02-07 | 1985-02-07 | Door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000473805A CA1276504C (en) | 1985-02-07 | 1985-02-07 | Door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1276504C true CA1276504C (en) | 1990-11-20 |
Family
ID=4129778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000473805A Expired - Fee Related CA1276504C (en) | 1985-02-07 | 1985-02-07 | Door |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1276504C (en) |
-
1985
- 1985-02-07 CA CA000473805A patent/CA1276504C/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |