SLIDING WINDOW ASSEMBLY

Abstract

A sliding window assembly includes a frame with a track, and a sliding window portion disposed in the frame and displaceable in the track between a closed position and an open position. The sliding window portion includes a handle pivotable between a lock position and a slide position, and a driving pin coupled with the handle and engaging the track. The driving pin defines a pivot axis for the handle. A guide pin spaced from the driving pin is selectively engageable with the track when the handle is pivoted from the lock position to the slide position. With the handle in the slide position, the sliding window portion is displaceable from its closed position to an open position.

Claims

1. A sliding window assembly comprising: a frame including a track; a sliding window portion disposed in the frame and displaceable in the track between a closed position and an open position, the sliding window portion including a leading end and a trailing end and comprising a handle pivotally coupled with the leading end, the handle being pivotable between a lock position and a slide position; and a pin assembly cooperable with the handle and including a driving pin and a guide pin spaced from the driving pin, wherein with the sliding window portion in the closed position and the handle in the lock position, the driving pin and the guide pin are aligned and substantially perpendicular to the track, and wherein when the handle is pivoted to the slide position, the driving pin and the guide pin are aligned and in alignment with the track.

2. A sliding window assembly according to claim 1, wherein the handle is pivotable about the driving pin.

3. A sliding window assembly according to claim 1, wherein the sliding window portion further comprises a leading end washer through which the driving pin and the guide pin extend.

4. A sliding window assembly according to claim 3, wherein the leading end washer bearing is interposed between the handle and the track, and wherein the driving pin and the guide pin extend through the leading end washer bearing and into the track.

5. A sliding window assembly according to claim 4, wherein the leading end washer bearing is dimensioned larger than a width of the track and rides on top of the track when the sliding window portion is displaced.

6. A sliding window assembly according to claim 1, further comprising a forward transition region cooperable with the track that receives the driving pin and the guide pin, wherein the guide pin is selectively engageable with the track via the forward transition region when the handle is pivoted from the lock position to the slide position.

7. A sliding window assembly according to claim 6, wherein the forward transition region includes a channel with a first leg substantially perpendicular to the track and a second leg aligned with the track, wherein with the sliding window portion in the closed position and the handle in the lock position, the driving pin and the guide pin are disposed in the first leg, and wherein when the handle is pivoted to the slide position, the driving pin and the guide pin are displaced into the second leg in alignment with the track.

8. A sliding window assembly according to claim 7, wherein the forward transition region comprises a rear channel in alignment with the second leg, and wherein the rear channel provides a continuous path for the guide pin to pass over/through the forward transition region when the sliding window portion is displaced to its open position.

9. A sliding window assembly according to claim 8, wherein the forward transition region further comprises a recessed surface between the second leg and the rear channel, and wherein in the closed position, the driving pin applies pressure in the forward transition region on the recessed surface.

10. A sliding window assembly according to claim 6, wherein the forward transition region comprises a removable plate that is secured to the frame in a recess.

11. A sliding window assembly comprising: a frame including a track; a sliding window portion displaceable in the track between a closed position and an open position, the sliding window portion comprising a pivot handle; a pin assembly cooperable with the pivot handle and including a guide pin spaced from a driving pin, wherein the pivot handle is pivotable about the driving pin between a lock position and a slide position, and wherein pivoting of the pivot handle effects displacement of the guide pin relative to the sliding window portion.

12. A sliding window assembly according to claim 11, further comprising a forward transition region cooperable with the track that receives the driving pin and the guide pin, wherein the guide pin is selectively engageable with the track via the forward transition region when the pivot handle is pivoted from the lock position to the slide position.

13. A sliding window assembly according to claim 12, wherein the forward transition region includes a channel with a first leg substantially perpendicular to the track and a second leg aligned with the track, wherein with the sliding window portion in the closed position and the pivot handle in the lock position, the driving pin and the guide pin are disposed in the first leg, and wherein when the pivot handle is pivoted to the slide position, the driving pin and the guide pin are displaced into the second leg in alignment with the track.

14. A sliding window assembly according to claim 12, wherein the forward transition region comprises a removable plate that is secured to the frame in a recess.

15. A method of operating a sliding window assembly that includes a frame with a track, a sliding window portion disposed in the frame and displaceable in the track via a handle between a closed position and an open position, and a pin assembly cooperable with the handle and including a driving pin and a guide pin spaced from the driving pin, the method comprising: (a) with the sliding window portion in the closed position and the handle in a lock position, aligning the driving pin and the guide pin in an orientation substantially perpendicular to the track; (b) pivoting the handle to a slide position such that the driving pin and the guide pin are aligned and in an orientation in alignment with the track, wherein as the handle is pivoted from the lock position to the slide position, the method including shifting the driving pin and the guide pin from the orientation substantially perpendicular to the track to the orientation in alignment with the track; (c) displacing the sliding window portion inwardly relative to the frame and toward the track upon pivoting of the handle in step (b); and (d) with the handle in the slide position, displacing the sliding window portion to the open position.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] These and other aspects and advantages will be described in detail with reference to the accompanying drawings, in which:

[0015] FIG. 1 is a perspective view showing the sliding window assembly in a closed position;

[0016] FIG. 2 shows the sliding window assembly with the handle being pivoted to a slide position;

[0017] FIG. 3 shows the sliding window assembly with the sliding window portion in an open position;

[0018] FIG. 4 shows details of the sliding window assembly components; and

[0019] FIG. 5 is a close-up view of the forward transition region and leading end washer bearing.

DETAILED DESCRIPTION

[0020] FIG. 1 is a perspective view of a sliding window assembly 10 with a sliding window portion 12 in a closed position. The sliding window portion 12 is disposed in a window frame 14 including a groove 15 (FIG. 4) securing a track 16. Although only two sides of the window frame 14 are shown in FIG. 1, the window frame may be constructed with top and bottom members as well (or even full perimeter frame). Additionally, a fixed window portion may form part of the sliding window assembly, where the sliding window portion 12 is aligned with and flush relative to the fixed window portion in the closed position, whereas the sliding window assembly enables the sliding window portion to be displaced inward to at least partially overlay the fixed window portion in an open position.

[0021] The sliding window portion 12 is displaceable in the track 16 between the closed position (FIG. 1) and the open position (FIG. 3). The sliding window portion 12 includes a leading end 18 and a trailing end 20. A handle 22 is pivotally coupled with the leading end 18 between a locked position and a slide position. FIG. 1 shows the handle 22 in the locked position, and FIG. 2 shows the handle 22 in the slide position.

[0022] FIG. 4 shows details of the sliding window portion 12. The handle 22 is pivotally coupled with leading end 18 and is pivotable between the locked position and the slide position. A first guide pin 24 is disposed on the trailing end 20 and engages the frame 14 via a rearward transition region 26 when the sliding window portion 12 is in the closed position. A second guide pin 32 is disposed on the leading end 18 and is coupled with a driving pin 28 via a washer bearing 38. The driving pin 28 is an extension of the handle 22 and engages the track 16 through rotation of the handle 22 via a locking assembly 30. The driving pin 28 defines a pivot axis for the handle 22. The second guide pin 32 engages a forward transition region 34. The locking assembly 30 includes the second guide pin 32 that is displaceable in the forward transition region 34, which may be formed or molded monolithically with the track 16. FIG. 4 shows an alternative embodiment where the forward transition region is a removable plate that is secured to the frame 14 in a first recess 35 by suitable connectors. As shown, the second guide pin 32 is spaced from the driving pin 28, whereby pivoting of the handle 22 causes displacement of the second guide pin 32.

[0023] The second guide pin 32 is selectively engageable with the track 16 via the forward transition region 34 when the handle 22 is pivoted on the driving pin 28 from the locked position to the slide position.

[0024] With reference to FIG. 5 and continued reference to FIG. 4, the first transition region 34 includes an L-shaped or curved channel 36 with a first leg 36a oriented substantially perpendicular to the track 16 and a second leg 36b aligned with the track 16. In this context, with the sliding window portion 12 in the closed position, and the handle 22 in the lock position, the driving pin 28 and second guide pin 32 are disposed in the first leg 36a of the L-shaped channel 36. When the handle 22 is pivoted to the slide position (rotated clockwise on driving pin 28 in FIG. 4), the driving pin 28 and the second guide pin 32 are displaced into the second leg 36b in alignment with the track 16. That is, the second guide pin 32 translates in the first leg 36a of the L-shaped channel 36 until the driving pin 28 and the second guide pin 32 are positioned into the second leg 36b, which is aligned with the track 16, after which the driving pin 28 and the second guide pin 32 are displaceable linearly in the track 16. The channel 36 thus guides the pins 28, 32 into alignment with the track 16.

[0025] The locking assembly 30 may further include a leading end washer bearing 38 positioned between the handle 22 and the forward transition region 34. The driving pin 28 and the second guide pin 32 extend through the leading end washer bearing 38. The leading end washer bearing 38 is dimensioned larger than a width of the track 16 and as such rides on top of the track 16 when the sliding window portion 12 is displaced to its open position. The larger dimension of the end washer bearing 38 prevents it from falling into the track 16, which prevents binding of the sliding window portion 12. The washer bearing has a shoulder that applies leverage to the interior of the track 16 during rotation of the handle 22 at a transition state between locked and sliding positions. The leading end washer bearing 38 may be made of a material that facilitates sliding between the leading end washer bearing 38 and the track 16. For example, the leading end washer bearing 38 may be made of semi-crystalline thermoplastics like Acetals, nylons or polypropylenes.

[0026] The driving pin 28 may form part of a handle connector 40 or the like that is secured directly to the handle 22. Additionally, the second guide pin 32 may form part of a guide pin housing 42 cooperable with the connector 40. In other embodiments, the driving pin 28 and second guide pin 32 may be integrated with the sliding window portion 12 more directly or by other suitable methods.

[0027] The rearward transition region 26 may be formed or molded monolithically with the track 16. FIG. 4 shows an alternative embodiment where the rearward transition region is a removable plate secured to the frame 14 in a second recess 43 by suitable connectors. The rearward transition region includes a transition track 44 that extends from an in-line position retracted from the track 16 to a track-aligned position in alignment with the track 16. As shown, the transition track 44 is substantially S-shaped. That is, the transition track 44 is configured to guide the first guide pin 24 into the track 16 as the sliding window portion 12 is displaced toward the open position. The track 44 thus includes a curved portion 44a connected to the in-line retracted position, an angled portion 44b extending away from the in-line retracted position, and another curved portion 44c to align the transition track 44 with the track 16 in or secured to the frame 14. These multiple turns and angled section of the transition track 44 define a substantial S-shape.

[0028] The first guide pin 24 may form part of a pin housing 46 that is securable in a corresponding channel 48 adjacent the trailing end 20. In other embodiments, the first guide pin 24 may be integrated with the sliding window portion 12 more directly or by other suitable methods. A trailing end washer bearing 50 may be positioned between the trailing end 20 and the transition track 44, where the first guide pin 24 extends through the trailing end washer bearing 50. The trailing end washer bearing 50 is configured to glide on the rearward transition region 26 and on top of the track 16. Like the leading end washer bearing 38, the trailing end washer bearing 50 is dimensioned larger than the track 16 to maintain the level of the sliding window portion 12 during displacement between the closed and open positions, and also prevents trailing end washer bearing 50 from falling into the track 16 and creating binding of the sliding window portion 12.

[0029] The forward transition region 34 also includes a rear channel 36c in alignment with the second leg 36b of the L-shaped channel 36. The rear channel 36c provides a continuous path for the first guide pin 24 to pass over/through the forward transition region 34 when the sliding window portion 12 is displaced to its open position. In the closed position, the driving pin 28 applies pressure in the forward transition region 34 on a recessed surface 36d between the second leg 36b and the rear channel 36c (see also FIG. 5).

[0030] As noted, with reference to FIGS. 1 and 2, as the handle 22 is pivoted from the lock position to the slide position, the driving pin 28 and the second guide pin 32 shift in the forward transition region 34 from an orientation substantially perpendicular to the track 16 to an orientation in alignment with the track 16. The leading end 18 of the sliding window portion 12 is thus displaced inwardly relative to the frame 14 and slightly in the direction of the track 16 upon rotation of the handle 22. With the handle 22 in the slide position, the sliding window portion 12 is displaceable to its open position. The first guide pin 24 follows the transition track 44 into the track 16 for displacement with the sliding window portion 12.

[0031] While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.