CA1204935A - Corner lock device - Google Patents
Corner lock deviceInfo
- Publication number
- CA1204935A CA1204935A CA000422963A CA422963A CA1204935A CA 1204935 A CA1204935 A CA 1204935A CA 000422963 A CA000422963 A CA 000422963A CA 422963 A CA422963 A CA 422963A CA 1204935 A CA1204935 A CA 1204935A
- Authority
- CA
- Canada
- Prior art keywords
- cam
- groove
- joint
- connector
- edges
- 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
Links
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
A joint comprising: two lengths of grooved metal sections; a connector having end portions insertable into a groove in each of said sections; and a cam on each of said connector end portions. Means are provided on each said cam for turning it about an axis perpendicular to the bottom of the groove and into lateral locking engagement with first and second edges of its associated groove. Each cam is eccentric and has opposite camming sides of unequal length.
And a device for joining metal lengths with grooves therein
A joint comprising: two lengths of grooved metal sections; a connector having end portions insertable into a groove in each of said sections; and a cam on each of said connector end portions. Means are provided on each said cam for turning it about an axis perpendicular to the bottom of the groove and into lateral locking engagement with first and second edges of its associated groove. Each cam is eccentric and has opposite camming sides of unequal length.
And a device for joining metal lengths with grooves therein
Description
~493S
The present invention relates to a device for joining extruded channels and to a joint comprising said device.
In particular, the invention is directed to connectors for tightly joining together extruded lengths of aluminum channel or the like.
Within this field it is well known to encompass a glass or picture area within a ~rame whose channel members are held together by corner connectors which are fastened to the channel by devices acting at right angles to the area or the channel.
Examples of threaded devices which act in a direction normal to the framed area are the Canadian patents no. 535,351 (1958) to Secord, and no. 1,035,952 (1978) to Nielsen; and U.S. patent 3,018,861 (1962) to Somville, all of which employ screws driven against the base of the rail In Canadian no. 925,292 (1973) to Vihma a channel-rail is gripped between a nut and bolt; other patents showing gripping through threaded members are U.S. patents 2,654,451 (1953) to Schmidgall, 2,816,632 (1957) to Nardulli, and
The present invention relates to a device for joining extruded channels and to a joint comprising said device.
In particular, the invention is directed to connectors for tightly joining together extruded lengths of aluminum channel or the like.
Within this field it is well known to encompass a glass or picture area within a ~rame whose channel members are held together by corner connectors which are fastened to the channel by devices acting at right angles to the area or the channel.
Examples of threaded devices which act in a direction normal to the framed area are the Canadian patents no. 535,351 (1958) to Secord, and no. 1,035,952 (1978) to Nielsen; and U.S. patent 3,018,861 (1962) to Somville, all of which employ screws driven against the base of the rail In Canadian no. 925,292 (1973) to Vihma a channel-rail is gripped between a nut and bolt; other patents showing gripping through threaded members are U.S. patents 2,654,451 (1953) to Schmidgall, 2,816,632 (1957) to Nardulli, and
2,947,391 (1960) to Wayne. ~nother method is the tie-bar approach found in Canadian patent no. 826,550 (1969) to Myatt where force along the rail is applied by means of cam surfaces engaged at right angles to the rail.
A further approach for joining lengths of channel is to insert longitudinal parallel gripping bars within specially formed channels, and separate these by screws or cams to clamp, as seen in U.S. patent 2,790,259 (1957) to ~Iavens; such an approach cannot be used to join corners together, only straight lengths.
The disadvantages oE the so called threaded fastenings heretofore discussed are that set-screws, jack-screws, bolts and nuts are small and easily lost or misplaced~ Further, being basically devices which apply force at right angles to the frame and its members, these screw devices do not apply ~L~Q~3S
a force component longitudinall~ of the channels in a direction to drive them into a tightly fitting joint.
Additionally, many channel cross-sectional configurations require special fasteners, and vi.ce versa, tending to reduce applicability.
According to the present invention, there is pro-vided a ~oint comprising: two lengths of grooved metal sections; a connector having end portions insertable into a groove in each of said sections; a cam on each of said connector end portions; and means on each said cam for turning it about an axis perpendicular to the bottom of the groove and into lateral locking engagement with first and second edges of its associated groove; each said cam being eccentric and having opposite camming sides of unequal length.
According to the present invention there is also provided a device or joining metal lengths with grooves therein comprising: a connector bodv having end portions insertable into the groove of each metal length; a cam on each of said end portions; means on each said cam adapted for turning it about an axis perpendicular to the bottom of ! the groove into lateral locking engagement with the edges of the grooves; each said can being eccentric and having opposite camming sides of unequal lengths.
~ preferred embodiment will now be described as example without limitative manner, having reference the attached drawings, wherein:
Figure 1 is a top plan view of a corner connector of the invention;
---_ C
~4935 Figure 2 is a view of the connector along line 2-2 of Fig.
l;
Figure 3 is an enlarged, fragmen-tary top plan view of the connector, showing in particular a cam thereof;
Figure 4 is a fragmentary, top plan view showing the connector in place between segments of frame channels;
Figure 5 is an enlarged cross-sectional view taken along line 5-5 of Fig. 4; and Figure 6 is an enlarged view, similar to Fig. 5, but showing a modification of the invention.
The connector 1 is shown in Fig. 1 in the L-shaped corner-connector version, with right-angle legs 2 and 3 and a body having a U-shaped cross-section with top 4 and sidewalls 5 and 6. The connector is made of steel and is seen to have a form which lends itself to stamping. Along its top 4, there are formed embossments 7 and ~ for additional rigidity.
The internal and external sidewalls 5 and 6 may be provided with other embossments 9, for purposes to be described here-after.
Overlying legs 2 and 3 are cams 14 and 15, respectively, each staked or riveted into opening 16 for rotation and against loss. A slot 17 is provided to accom-modate a key or screwdriver with which the cam may be rotated.
The cam 15 will be seen to be eccentric, and to display camming surfaces of different radii; aam surfaces 18 have a longer radius than do cam surfaces 19, for purposes to be explained now.
In Figure 4 is seen the corner connector 1 with legs 2 and 3 inserted in pieces of channel 20 and 21, respectively. The channel pieces have each been cut at a 45 angle as at 22, and together form a right angle.
The embossments 9 cause the sides of the connector, as will appear from Fig. 5, to fit closely within the frame channel 21, whose opposed open lateral edges 21a, 21b e~tend ~.
A further approach for joining lengths of channel is to insert longitudinal parallel gripping bars within specially formed channels, and separate these by screws or cams to clamp, as seen in U.S. patent 2,790,259 (1957) to ~Iavens; such an approach cannot be used to join corners together, only straight lengths.
The disadvantages oE the so called threaded fastenings heretofore discussed are that set-screws, jack-screws, bolts and nuts are small and easily lost or misplaced~ Further, being basically devices which apply force at right angles to the frame and its members, these screw devices do not apply ~L~Q~3S
a force component longitudinall~ of the channels in a direction to drive them into a tightly fitting joint.
Additionally, many channel cross-sectional configurations require special fasteners, and vi.ce versa, tending to reduce applicability.
According to the present invention, there is pro-vided a ~oint comprising: two lengths of grooved metal sections; a connector having end portions insertable into a groove in each of said sections; a cam on each of said connector end portions; and means on each said cam for turning it about an axis perpendicular to the bottom of the groove and into lateral locking engagement with first and second edges of its associated groove; each said cam being eccentric and having opposite camming sides of unequal length.
According to the present invention there is also provided a device or joining metal lengths with grooves therein comprising: a connector bodv having end portions insertable into the groove of each metal length; a cam on each of said end portions; means on each said cam adapted for turning it about an axis perpendicular to the bottom of ! the groove into lateral locking engagement with the edges of the grooves; each said can being eccentric and having opposite camming sides of unequal lengths.
~ preferred embodiment will now be described as example without limitative manner, having reference the attached drawings, wherein:
Figure 1 is a top plan view of a corner connector of the invention;
---_ C
~4935 Figure 2 is a view of the connector along line 2-2 of Fig.
l;
Figure 3 is an enlarged, fragmen-tary top plan view of the connector, showing in particular a cam thereof;
Figure 4 is a fragmentary, top plan view showing the connector in place between segments of frame channels;
Figure 5 is an enlarged cross-sectional view taken along line 5-5 of Fig. 4; and Figure 6 is an enlarged view, similar to Fig. 5, but showing a modification of the invention.
The connector 1 is shown in Fig. 1 in the L-shaped corner-connector version, with right-angle legs 2 and 3 and a body having a U-shaped cross-section with top 4 and sidewalls 5 and 6. The connector is made of steel and is seen to have a form which lends itself to stamping. Along its top 4, there are formed embossments 7 and ~ for additional rigidity.
The internal and external sidewalls 5 and 6 may be provided with other embossments 9, for purposes to be described here-after.
Overlying legs 2 and 3 are cams 14 and 15, respectively, each staked or riveted into opening 16 for rotation and against loss. A slot 17 is provided to accom-modate a key or screwdriver with which the cam may be rotated.
The cam 15 will be seen to be eccentric, and to display camming surfaces of different radii; aam surfaces 18 have a longer radius than do cam surfaces 19, for purposes to be explained now.
In Figure 4 is seen the corner connector 1 with legs 2 and 3 inserted in pieces of channel 20 and 21, respectively. The channel pieces have each been cut at a 45 angle as at 22, and together form a right angle.
The embossments 9 cause the sides of the connector, as will appear from Fig. 5, to fit closely within the frame channel 21, whose opposed open lateral edges 21a, 21b e~tend ~.
3~i over the connector.
The opposed lateral edges 21a and 21b form an integral part of each channel 20, 21 and form a partial enclosure around the connector 1 by being of hollow rectangular shape with a lengthwise openiny 21c in one side thereof which defines -two edges tips 23 and 24.
The cam 15, shown in its original position in Fig.
1, may be turned by applying a key or screwdriver blade to slot 17. The cam surfaces 18 and 19 approach the channel edges tips 23 and 24, with the longer cam surface 18 reaching edge tip 24 first; this is the situation shown by cam 15 in Figs. 4 and 5. Upon further turning of the cam, the cam surface 18 will apply a longitudinal component of force to the channel 21, tending to drive it toward the corner, as both cam surfaces 18 and 19 then simultaneously start to diy in laterally into the underside of the edge tips 23 and 24.
With continued turning of the cam 14, 15 the steel cam continues biting into the channel edge tips, 23, 24 made of aluminum, making room for itself as necessary by displacing small chips of metal and approaching a locked position as shown by cam 14 in Fig. 4. It will be noted that lateral biting by the cam into the channel edge tips 23, 24 is facilitated by the top of the cam 14, 15 lying below the top channel edges. Although the actual clamping force is applied entirely in a lateral direction, the tightening of the cam into the metal of the channel produces playless engagement between the cam, the body 4, 5, 6 of the connec-tor and the channels 20, 21.
The embossment 8 at the inner corner of the connector will be seen to be an additional means for eliminating clearance directly beneath the meeting surfaces of the channel pieces 20, 21 at their inner corner.
~ here additional stiffness might be required in extremely heavy framing, a right angle corner reinforcement
The opposed lateral edges 21a and 21b form an integral part of each channel 20, 21 and form a partial enclosure around the connector 1 by being of hollow rectangular shape with a lengthwise openiny 21c in one side thereof which defines -two edges tips 23 and 24.
The cam 15, shown in its original position in Fig.
1, may be turned by applying a key or screwdriver blade to slot 17. The cam surfaces 18 and 19 approach the channel edges tips 23 and 24, with the longer cam surface 18 reaching edge tip 24 first; this is the situation shown by cam 15 in Figs. 4 and 5. Upon further turning of the cam, the cam surface 18 will apply a longitudinal component of force to the channel 21, tending to drive it toward the corner, as both cam surfaces 18 and 19 then simultaneously start to diy in laterally into the underside of the edge tips 23 and 24.
With continued turning of the cam 14, 15 the steel cam continues biting into the channel edge tips, 23, 24 made of aluminum, making room for itself as necessary by displacing small chips of metal and approaching a locked position as shown by cam 14 in Fig. 4. It will be noted that lateral biting by the cam into the channel edge tips 23, 24 is facilitated by the top of the cam 14, 15 lying below the top channel edges. Although the actual clamping force is applied entirely in a lateral direction, the tightening of the cam into the metal of the channel produces playless engagement between the cam, the body 4, 5, 6 of the connec-tor and the channels 20, 21.
The embossment 8 at the inner corner of the connector will be seen to be an additional means for eliminating clearance directly beneath the meeting surfaces of the channel pieces 20, 21 at their inner corner.
~ here additional stiffness might be required in extremely heavy framing, a right angle corner reinforcement
4 --.~
Ih. ,~
3~i 25 may be inserted under the connector body, as shown in Figure 6.
Although the above description has been directed to the xight-angle corner connector,-the same fastening principle may, of course, be applied to the fastening together of two lengths in extension of each other, by the use of a straight connector in place of the L-shaped device.
Ih. ,~
3~i 25 may be inserted under the connector body, as shown in Figure 6.
Although the above description has been directed to the xight-angle corner connector,-the same fastening principle may, of course, be applied to the fastening together of two lengths in extension of each other, by the use of a straight connector in place of the L-shaped device.
Claims (19)
1. A joint comprising:
(a) two lengths of grooved metal sections;
(b) a connector having end portions insertable into a groove in each of said sections;
(c) a cam on each of said connector end portions; and (d) means on each said cam for turning it about an axis perpendicular to the bottom of the groove and into lateral locking engagement with first and second edges of its associated groove;
(e) each said cam being eccentric and having opposite camming sides of unequal length.
(a) two lengths of grooved metal sections;
(b) a connector having end portions insertable into a groove in each of said sections;
(c) a cam on each of said connector end portions; and (d) means on each said cam for turning it about an axis perpendicular to the bottom of the groove and into lateral locking engagement with first and second edges of its associated groove;
(e) each said cam being eccentric and having opposite camming sides of unequal length.
2. Device for joining metal lengths with grooves therein comprising:
(a) a connector body having end portions insertable into the groove of each metal length;
(b) a cam on each of said end portions;
(c) means on each said cam adapted for turning it about an axis perpendicular to the bottom of the groove into lateral locking engagement with the edges of the grooves (d) each said cam being eccentric and having opposite camming sides of unequal lengths.
(a) a connector body having end portions insertable into the groove of each metal length;
(b) a cam on each of said end portions;
(c) means on each said cam adapted for turning it about an axis perpendicular to the bottom of the groove into lateral locking engagement with the edges of the grooves (d) each said cam being eccentric and having opposite camming sides of unequal lengths.
3. A joint comprising:
(a) two lengths of grooved metal sections;
(b) a connector having end portions insertable into a groove in each of said sections;
(c) a cam on each of said connector end portions; and (d) means on each said cam for turning it laterally into locking engagement with first and second edges of its associated groove, (e) each said cam being eccentric and having a first side which upon turning of said cam engages the first edge of said groove before a second side of said cam engages the second edge of said groove.
(a) two lengths of grooved metal sections;
(b) a connector having end portions insertable into a groove in each of said sections;
(c) a cam on each of said connector end portions; and (d) means on each said cam for turning it laterally into locking engagement with first and second edges of its associated groove, (e) each said cam being eccentric and having a first side which upon turning of said cam engages the first edge of said groove before a second side of said cam engages the second edge of said groove.
4. Joint as in claim 3, wherein the said section lengths comprise extruded channel members having opposed edges.
5. Joint as in claim 4, wherein said cam lies laterally between said opposed edges.
6. Joint as in claim 3, wherein said metal sections are mitered to form an angular joint.
7. Joint as in claim 3, wherein said connector is L-shaped.
8. Joint as in claim 3, wherein said connector has a U-shaped cross-section.
9. Joint as in claim 3, wherein said connector has a rectangular cross-section.
10. Joint as in claim 3, wherein said cam, upon lateral engagement displaces a portion of the metal of said edges.
11. Joint as in claim 3, wherein the said cam, upon lateral turning engages only the lower portion of said edges.
12. Joint as in claim 3, wherein the means to turn the said cam comprises a key-slot.
13. Device for joining metal lengths with grooves therein comprising:
(a) a connector body having end portions insertable into the groove of each metal length;
(b) a cam on each of said end portions; and (c) means on each said cam adapted for turning it laterally into locking engagement with the edges of the groove;
(d) each said cam being eccentric and having a first side which upon turning of said cam engages a first edge of the groove before a second side of said cam engages a second edge of the groove.
(a) a connector body having end portions insertable into the groove of each metal length;
(b) a cam on each of said end portions; and (c) means on each said cam adapted for turning it laterally into locking engagement with the edges of the groove;
(d) each said cam being eccentric and having a first side which upon turning of said cam engages a first edge of the groove before a second side of said cam engages a second edge of the groove.
14. Device as in claim 13, wherein said connector body is L-shaped.
15. Device as in claim 13, wherein said connector body has a U-shaped cross-section.
16. Device as in claim 13, wherein said connector body has a rectangular cross-section.
17. Device as in claim 13, wherein said cam, upon lateral engagement, displaces a portion of the metal of said edges.
18. Device as in claim 13, wherein said cam, upon lateral turning, engages only the lower portion of said edges.
19. Device as in claim 13, wherein the means to turn said cam comprises a key slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000422963A CA1204935A (en) | 1983-03-04 | 1983-03-04 | Corner lock device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000422963A CA1204935A (en) | 1983-03-04 | 1983-03-04 | Corner lock device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1204935A true CA1204935A (en) | 1986-05-27 |
Family
ID=4124723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000422963A Expired CA1204935A (en) | 1983-03-04 | 1983-03-04 | Corner lock device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1204935A (en) |
-
1983
- 1983-03-04 CA CA000422963A patent/CA1204935A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |