The invention relates to the field of wheels for sliding doors and windows.
Prior art wheel assemblies 18A and 18B are fixed to the bottom of two distant locations of a prior art frame 12 housing a board 50 or a pane, for allowing sliding frame 12 along a rail 20.
Each of prior art wheel assemblies 18A and 18B of
Referring again to
Thus, not more than four wheels, namely two of two wheel assemblies can be used.
However, for sliding a heavy frame 12 applying a large gravity 34, four wheels are not sufficient, or for being sufficient, the wheels and the rail must be very massive.
There is a long felt need to provide a solution to the above-mentioned and other problems of the prior art.
A wheels assembly, including: two subsidiary wheel assemblies, each including: a profile; a cart and including wheels; one including a user-adjustable bolt, for adjusting the tilted sliding of one cart.
Embodiments, features, and aspects of the invention are described herein in conjunction with the following drawings:
The drawings are not necessarily drawn to scale.
The invention will be understood from the following detailed description of embodiments of the invention, which are meant to be descriptive and not limiting. For the sake of brevity, some well-known features are not described in detail.
The reference numbers have been used to point out elements in the embodiments described and illustrated herein, in order to facilitate the understanding of the invention. They are meant to be merely illustrative, and not limiting. Also, the foregoing embodiments of the invention have been described and illustrated in conjunction with systems and methods thereof, which are meant to be merely illustrative, and not limiting.
A wheels assembly 10 according to one embodiment of the invention, includes at least a first subsidiary wheels assembly 60A and a second subsidiary wheels assembly 60A, each including a profile 28A fixed to the bottom of prior art frame 12, and each including wheels 16A and 16B.
Profile 28A of first subsidiary wheels assembly 60A and profile 28A of second subsidiary wheels assembly 60B are fixed one to the other, such as by a fixing element 78.
First subsidiary wheels assembly 60A includes a cart 28B including a hole 56A for housing an axle 58 of wheel 16A, for rotating in relation to cart 28B; including a hole 56B for housing an axle 58 of a wheel 16B, for rotating in relation to cart 28B; and including a hole 56C for housing stationary rounded rod 24, being stationary to cart 28B.
Profile 28A (of
First subsidiary wheels assembly 60A being assembled provides that the bottom wheels 16A and 16B slide on rail 20 carrying cart 28B, and that profile 28A fixed to frame 12 is rotatable 42A and slidable 42B in relation to rod 24, as being rounded, and to cart 28B fixed thereto.
However, in case gravity only is applied, gravity 34 of pane 50 pressing on wheels 16A,16B downwards, slide rod 24 to the top of tilted slit 26 as shown by one-directional arrow 42B, thus lifts wheels 16A,16B, thus lowers profile 28A in relation to rail 20.
The length 68B of cart 28B and the length 68A of profile 28A are equal. Rod 24 is fixed to the center 70B of the length 68B of cart 28B; and slit 26 is formed to dispose the top 66 thereof at the center 70A of the length 68A of profile 28A, providing that in case gravity 34 only is applied thus disposing rod 24 at top 66 of slit 26, cart 28B does not protrude out of profile 28A.
Second subsidiary wheels assembly 60B is similar to first subsidiary wheels assembly 60A, except for including a positioning element 72, including a bolt 30 for pressing cart 28B.
Positioning of bolt 30 of element 72 is intended to adjust tilted sliding 42B of cart 28B in relation to profile 28A, for adjusting the vertical distance 80 therebetween. This operation lifts or lowers profile 28A together with frame 12 and pane 50 in relation to rail 20 to the desired height.
For a correct design, at the desired height of profile 28A in relation to frame 12, rod 24 will be disposed approximately at the center 74 of tilted slit 26 once wheels 16A,16B are pressed upwards by the gravity.
Since once rod 24 of second subsidiary wheels assembly 60B is disposed at top 66 of slit 26, cart 28B does not protrude out of profile 28A, once positioning element 72 disposes rod at center 74 of slit 26, cart 28B of second subsidiary wheels assembly 60B indeed protrudes 76B out of its profile 28A.
Fixing of profile 28A of first subsidiary wheels assembly 60A to profile 28A of second subsidiary wheels assembly 60B by fixing element 78, provides that protrusion 76B of cart 28B of second subsidiary wheels assembly 60B out of its profile 28A means insertion of cart 28B of second subsidiary wheels assembly 60B into profile 28A of subsidiary wheels assembly 60A.
And insertion of cart 28B of second subsidiary wheels assembly 60B into profile 28A of subsidiary wheels assembly 60A means pressing of cart 28B of second subsidiary wheels assembly 60B onto cart 28B of first subsidiary wheels assembly 60A, providing protrusion 76A of cart 28B of first subsidiary wheels assembly 60A out of its profile 28A.
Protrusions 76A and 76B are of the same extent, meaning that adjusting by bolt 30 adjusts the position of rods 24 of both subsidiary wheel assemblies 60A and 60B to the same extent.
Referring again to
Thus, for example, in case bolt 30 does not press cart 28B of second subsidiary wheels assembly 60B, cart 28B of second subsidiary wheels assembly 60B does not protrude out of its profile 28A, and thus does not press cart 28B of first subsidiary wheels assembly 60A to protrude out of its profile 28A.
Thus, adjusting of bolt 30 of second subsidiary wheels assembly 60B, adjusts the height of profile 28A of second subsidiary wheels assembly 60B and as well the height of profile 28A of first subsidiary wheels assembly 60A and as well the height of profile 28A of third subsidiary wheels assembly 60C (not shown), each together with the portion of frame 12 and pane 50 of that subsidiary wheels assembly, in relation to rail 20 to the desired height.
Thus, in one aspect, the invention is directed to a wheels assembly (10), including:
at least a first subsidiary wheels assembly (60A), each including:
a second subsidiary wheels assembly (60B), including:
where the second profile (28A) of the second subsidiary wheels assembly (60B) is fixed (78) to the second profile (28A) of one of the at least first subsidiary wheels assembly (60A), and
where the first and second carts (28B) are sized to attach one another,
thereby the user-adjustable bolt (30) further adjusts the tilted sliding (42B) of the second cart (28B) in relation to the second profile (28A) through the tilted sliding (42B) of the first cart (28B),
thereby the adjusting of the user-adjustable bolt (30) adjusts vertical distances (82) between the wheels (12A,12B) of the subsidiary wheel assemblies (60A, 60B) and the board (12).
Each of the first and second profiles (28A) may include a tilted slit (26), for providing the tiltable slidability (42B).
Each of the first and second carts (28B) may include a rod (24) for tiltably sliding (42B) along the slit (26) of the profile (28A).
Lengths (68B) of the carts (28B) and lengths (68A) of the profiles (28A) preferably are equal, and each of the rods (24) is fixed to the center (70B) of the cart (28B), and where the top (66) of the slit (26) is disposed at the center (70A) of the profile (28A),
The rod (24) may be rounded, thereby each of the carts (28B) is rotatable (42A) in relation to the profile (28A) of that cart (28B).
The first cart (28B) of the at least first subsidiary wheels assembly (60A) may be designed to be inserted by gravity (34) of the board (12), into the first profile (28A) of the at least first subsidiary wheels assembly (60A), for not protruding from the first profile (28A), and to protrude (76A) therefrom by force applied by the user-adjustable bolt (30) against the gravity (34).
The protrusion of the first cart (28B) of the at least first subsidiary wheels assembly (60A) from the first profile (28A) of the at least first subsidiary wheels assembly (60A) may be designed to insert the first cart (28B) of the at least first subsidiary wheels assembly (60A) into the second profile (28B), thereby sliding the second cart (28A).
In the figures and/or description herein, the following reference numerals (Reference Signs List) have been mentioned:
The foregoing description and illustrations of the embodiments of the invention have been presented for the purpose of illustration, and are not intended to be exhaustive or to limit the invention to the above description in any form.
Any term that has been defined above and used in the claims should be interpreted according to this definition.
The reference numbers in the claims are not a part of the claims, but rather used for facilitating the reading thereof. These reference numbers should not be interpreted as limiting the claims in any form.