JP2019536927A - Window stay - Google Patents

Abstract

A frame plate configured for attachment to a window frame, a sash plate configured for attachment to a window sash, a carriage configured to slide on the frame plate, and a connection connecting the carriage to the sash plate. A window stay including an element, wherein the carriage engages with the carriage body and the frame plate in the latched position to lock the carriage on the frame plate, and allows the carriage to slide on the frame plate in the unlatched position. Wherein the frame plate includes one or more reset elements configured to return the latch element to the latched position after carriage movement. [Selection diagram] FIG.

Description

  The present invention relates to a window stay, and more particularly, to a sliding window stay.

  Window stays (also known as window stay hinges or friction stays) are well known in the window art. Typically, a window stay connects the window sash to the window frame and functions as a hinge so that the window can be opened and closed. In many cases, the window stays are frame plates configured for attachment to a window frame, sash plates configured for attachment to a window sash, and pivotally connected between the frame plate and the sash plate. Including a plurality of arms. Many different configurations of window stays are available, depending on the type of window and the type of opening and closing mechanism required.

  In some window stays, there may be a carriage that can slide on the frame plate. One or more of the arms may be connected to the carriage rather than directly to the frame plate. At this time, the carriage can slide as a part of the window opening / closing mechanism.

  For example, GB 231324B, the contents of which are incorporated herein by reference, discloses a so-called "4-bar" window stay. The window stay includes a short arm and a long arm pivotally connected between a frame plate and a sash plate. The short arm is connected to the frame plate by a sliding carriage. In normal operation, the carriage is restricted from sliding by the locking means and the configuration of the arm is such that the sash plate can move relative to the frame plate (corresponding to the opening of the window from the closed position to the first open position). It has become. Upon further operation, the locking means is released and the carriage can slide on the frame plate, thereby further opening the window from the first open position to the second open position. The locking means taught by GB 231324B includes a button integrally formed with the protrusion. The protrusion engages the frame plate to limit sliding of the carriage. The protrusion is biased to the locked position by a spring component, also formed integrally with the button.

  A problem associated with the window stay disclosed in GB 231324B is that the buttons and protrusions (integrally formed with the spring parts) are also made of plastic because the spring parts are made of plastic. . The protrusions are then exposed to wear, which affects the performance of the locking means over the life of the window stay.

  A further problem associated with window stays that include a sliding carriage is that the frame must be configured to hold the carriage. One approach is to form the frame plate using an extrusion process so that the frame plate has a profile suitable for use as a truck. For example, U.S. Pat. No. 2,313,324 B discloses a window stay frame plate that is an extruded extension having a generally "U" shaped profile in which a carriage slides. They are nested in a formula configuration.

  Reference to any document in this specification is not an admission that such document forms part of the common general knowledge.

  The present invention can provide an improved window stay, or at least provide the public with a useful choice.

UK Patent No. 231324B

  In a first aspect, the invention provides a frame plate configured for attachment to a window frame, a sash plate configured for attachment to a window sash, and a carriage configured to slide on the frame plate. And a window stay including a connection element for connecting the carriage to the sash plate, wherein the carriage engages with the carriage body and the frame plate in the latch position to lock the carriage on the frame plate, and the carriage in the unlatched position. A latch element configured to allow sliding on the frame plate, the frame plate including one or more reset elements configured to return the latch element to the latched position after carriage movement.

  Optionally, the latch element is configured to slide along an axis parallel to the longitudinal axis of the frame plate and engage the reset element to move between an unlatched position and a latched position. I have.

  Optionally, one or more reset elements include a stepped recess that includes an angled surface.

  Optionally, the angled surface pushes the latch element into the latched position as the carriage moves.

  Optionally, the stepped recess further comprises at least one inclined surface and a locking surface, wherein the latch element is locked behind the locking surface in the latched position and released from the locking surface in the unlatched position on the inclined surface Slide.

  Optionally, the latch element is supported by a spring movable into and out of the frame as the latch moves over the reset element.

  Optionally, the spring is compressed as the latch element slides up the slope.

  Optionally, one or more reset elements are integrally formed with the frame plate.

  Optionally, in a first configuration of the window stay, the latch element is in a latched position, the carriage is in a first carriage position on the frame plate, and in a second configuration of the window stay, the latch element is unlatched. In position, the carriage is slidable on the frame plate.

  Optionally, the sash plate can be moved between a closed position and a partially open position relative to the frame plate when in the first configuration, and when the window stay is in the second configuration. The sash plate can be moved between a partially open position and a fully open position with respect to the frame plate.

  Optionally, the latch position and the unlatched position of the latch element are on a transverse axis relative to the sliding axis of the carriage.

  Optionally, the latch element is mounted within the carriage body and the latch element is configured to slide along a transverse axis between an unlatched position and a latched position.

  Optionally, the sash plate is configured to move between a closed position and a partially open position relative to the frame plate when the carriage is in a first carriage position on the frame plate, wherein the carriage is When in the upper second carriage position, the sash plate is configured to move to a fully open position with respect to the frame plate.

  Optionally, the closed position corresponds to the plane of the window sash being parallel to the plane of the window frame, and the partially open position corresponds to the plane of the window sash having an angle of 5 to 50 degrees with respect to the plane of the window frame. And the fully open position corresponds to the plane of the window sash being at an angle of 50-110 degrees to the plane of the window frame.

  Optionally, the closed position corresponds to the plane of the window sash being parallel to the plane of the window frame, and the partially open position corresponds to the plane of the window sash having an angle of 10 to 60 degrees with respect to the plane of the window frame. And the fully open position corresponds to the plane of the window sash being at an angle of 60 to 110 degrees with respect to the plane of the window frame.

  Optionally, the window stay comprises two opposing stepped recesses, each stepped recess corresponding to a first carriage position and a second carriage position, respectively.

  In a second aspect, the invention provides a frame plate configured for attachment to a window frame, a sash plate configured for attachment to a window sash, and a carriage configured to slide on the frame plate. And a window stay including a connection element for connecting the carriage to the sash plate, wherein the carriage engages with the carriage body and the frame plate at the latch position to lock the carriage on the frame plate, and moves the carriage at the unlatched position. A latch mechanism configured to allow sliding on the frame plate, and one or more reset elements on the sash plate configured to return the latch mechanism to the latched position as the sash plate closes on the carriage. And

  Optionally, the sash plate closes on the carriage when the window is closed.

  Optionally, the latch mechanism comprises a latch element and a stepped recess in the frame plate, the latch element having a latched position and an unlatched position along an axis parallel to the longitudinal axis of the frame plate. It is configured to slide between.

  Optionally, the carriage includes a button movably connected to the latch element.

  Optionally, the reset element is configured to push the button into the latched position as the sash plate closes on the carriage.

  Optionally, the reset element is a ridge raised toward the carriage.

  Optionally, the button slides between a latched position and an unlatched position within the recess of the carriage so as to traverse the direction of movement of the carriage.

  Optionally, the carriage recess is configured to interact with the button feature to bias the button toward the latched position.

  Optionally, the latch element is spring-connected to the button so that the latch element is movable axially away from and toward the carriage.

  Optionally, the button includes a deformable portion configured to interact with the reset element.

  It is understood that the terms "comprise", "comprises", and "comprising" can be interpreted in different jurisdictions with either an exclusive or an inclusive meaning. . For the purposes of this specification, and unless otherwise specified, these terms are intended to have a generic meaning, i.e., they are listed components whose use is directly referred to And, in some cases, also include components or elements not explicitly stated.

  The present invention will be described by way of example only with reference to the accompanying drawings.

FIG. 4 illustrates an isometric view of a window stay in a partially open position, according to one embodiment. FIG. 2 shows an isometric view of the window stay of FIG. 1 in a closed position. FIG. 2 shows an isometric view of the window stay of FIG. 1 in a fully open position. FIG. 2 shows an isometric view of a portion of the window stay of FIG. 1. FIG. 2 shows an isometric view of a portion of the window stay of FIG. 1. FIG. 2 shows a cross-sectional view of a portion of the window stay of FIG. 1 with the latch mechanism in a latched position. FIG. 2 shows a cross-sectional view of a portion of the window stay of FIG. 1 with the latch mechanism in an unlatched position. FIG. 4 shows a sectional view of the window stay of FIG. 3. FIG. 4 shows an isometric view of a frame plate according to one embodiment. FIG. 4 shows a bottom orthographic view of the window stay of FIG. 3. FIG. 4 shows an isometric view of a portion of the window including the window stay in the closed position. FIG. 4 shows an isometric view of a portion of the window including the window stay in a partially open position. FIG. 4 shows an isometric view of a portion of the window including the window stay in a fully open position. FIG. 4 shows an isometric view of a window stay in a partially open position according to a second embodiment. FIG. 12 shows an isometric view of the window stay of FIG. 11 in a closed position. FIG. 12 shows an isometric view of the window stay of FIG. 11 in a fully open position. FIG. 12 shows an isometric view of a portion of the window stay of FIG. FIG. 12 shows an isometric view of a portion of the window stay of FIG. FIG. 12 illustrates a cross-sectional view of a portion of the window stay of FIG. 11 with the latch mechanism in a latched position. FIG. 12 illustrates a cross-sectional view of a portion of the window stay of FIG. 11 with the latch mechanism in an unlatched position. FIG. 14 shows a sectional view of the window stay of FIG. 13. FIG. 4 shows an isometric view of a frame plate according to a second embodiment. FIG. 14 shows a bottom orthographic projection of the window stay of FIG. 13. FIG. 8 shows an isometric view of a portion of a window including a window stay in a closed position, according to a second embodiment. FIG. 7 shows an isometric view of a portion of a window including a window stay in a partially open position, according to a second embodiment. FIG. 7 shows an isometric view of a portion of a window including a window stay in a fully open position, according to a second embodiment. FIG. 7 shows an isometric view of a window stay in a partially open position according to a third embodiment. FIG. 22 illustrates an isometric view of the window stay of FIG. 21 in a closed position. FIG. 22 shows an isometric view of the window stay of FIG. 21 in a fully open position. FIG. 22 is an isometric view of a portion of the window stay of FIG. 21. FIG. 22 shows an isometric view of a portion of the window stay of FIG. 21. FIG. 22 illustrates a cross-sectional view of a portion of the window stay of FIG. 21 with the latch mechanism in a latched position. FIG. 22 illustrates a cross-sectional view of a portion of the window stay of FIG. 21 with the latch mechanism in an unlatched position. FIG. 24 is a sectional view of the window stay of FIG. 23. FIG. 7 shows an isometric view of a frame plate according to a third embodiment. FIG. 24 shows a bottom orthographic view of the window stay of FIG. 23. FIG. 8 shows an isometric view of a portion of a window including a window stay in a closed position, according to a third embodiment. FIG. 7 shows an isometric view of a portion of a window including a window stay in a partially open position, according to a third embodiment. FIG. 7 shows an isometric view of a portion of a window including a window stay in a fully open position, according to a third embodiment. FIG. 11 shows a front view of a part of a stay according to a fourth embodiment. FIG. 9 shows a perspective view of a frame plate according to a fourth embodiment. Fig. 32b shows a front view of the frame plate of Fig. 32a. Fig. 32b shows a side view of the frame plate of Fig. 32a. 13 shows a carriage movement sequence according to the fourth embodiment. 13 shows a carriage movement sequence according to the fourth embodiment. 13 shows a carriage movement sequence according to the fourth embodiment. 13 shows a carriage movement sequence according to the fourth embodiment. 13 shows a carriage movement sequence according to the fourth embodiment. 13 shows a carriage movement sequence according to the fourth embodiment. 13 shows a carriage movement sequence according to the fourth embodiment. 13 shows a carriage movement sequence according to the fourth embodiment. FIG. 34a shows a front view of a frame plate with latching elements in various positions. FIG. 34b shows a sectional view through AA in FIG. 34A. FIG. 35a shows a front view of a frame plate with latching elements in various positions. FIG. 35b shows a sectional view through BB in FIG. 35A. FIG. 36a shows a front view of the frame plate with the latching element in various positions. FIG. 36b shows a cross-section through CC of FIG. 36A. FIG. 37a shows a front view of a frame plate with latching elements in various positions. FIG. 37b shows a sectional view through DD in FIG. 37A. FIG. 38a shows a front view of a frame plate with latching elements in various positions. FIG. 38b shows a sectional view through EE in FIG. 38A. FIG. 39a shows a front view of the frame plate with the latching element in various positions. FIG. 39b shows a sectional view through FF in FIG. 39A. FIG. 3 shows a perspective view of a sash plate. Figure 50b shows a bottom perspective view of the sash plate of Figure 50a. FIG. 3 shows a perspective view of a button. FIG. 4 shows a bottom perspective view of the button. FIG. 4 shows a right side view of the button. FIG. 4 shows a top view of a button having a deformable portion. FIG. 3 shows a perspective view of a button having a deformable part. FIG. 4 shows a bottom perspective view of a button having a deformable portion. FIG. 4 shows a right side view of a button having a deformable portion. FIG. 4 shows a top view of the button. FIG. 3 shows a top view of the carriage. FIG. 4 shows a top view of a carriage having a button in a latched position. FIG. 4 shows a top view of a carriage having a button in an unlatched position. FIG. 4 shows an exploded view of the carriage and button assembly. FIG. 3 shows a detailed view of the inclined portion. FIG. 4 shows a side view of a half-open window stay. FIG. 43b shows a cross-sectional view through AA of FIG. 43a. FIG. 4 shows a side view of the window stay. FIG. 44B shows a cross-sectional view through BB of FIG. 44a. FIG. 4 shows a side view of the window stay. FIG. 45b shows a sectional view through CC in FIG. 45a. FIG. 4 shows a side view of the window stay. Fig. 46b shows a sectional view through DD in Fig. 46a. FIG. 4 shows a side view of the window stay. FIG. 47b shows a sectional view through EE in FIG. 47a. FIG. 4 shows a side view of the window stay. FIG. 48b shows a sectional view through FF in FIG. 48a.

  FIG. 1 shows a window stay 1 according to one embodiment. The window stay 1 includes a frame plate 2 for mounting on a window frame and a sash plate 3 for mounting on a window sash. Although neither a window frame nor a window sash is shown in FIG. 1, those skilled in the art will appreciate that the window stays of the present invention can be installed with any suitable type of window frame and window sash to provide an awning type window or opening. One will understand how any of the window type windows can be implemented.

  The carriage 4 is configured to slide on the frame plate 2. Connecting elements in the form of short arms 5 and joints 6, 7 connect the carriage to the sash plate. Additional connecting elements in the form of long arms 8 and joints 9, 10 connect the frame plate to the sash plate. The joints 6, 7, 9, 10 may be any suitable type of pivot joint, such as a friction rivet joint well known in this application. The configuration of the connecting elements 5, 6 and the joints 6, 7, 9, 10 allows a relative movement between the frame plate 2 and the sash plate 3. As will be described in more detail below, this relative movement allows the installed window sash to be changed from a closed position to an open position. One or more holes 11, 12, 13, 14, 15 are provided in the frame plate and sash plate for receiving a suitable fastener for attaching the frame plate to the window frame and attaching the sash plate to the window sash. I have.

  FIG. 1 shows the window stay 1 in a partially open position. In the partially open position, the plane of the window sash (not shown) is at an angle of 10 to 60 degrees with respect to the plane of the window frame (not shown). In the embodiment of FIG. 1, this angle is indicated generally by the dashed arc 16 and is approximately 32 degrees.

  FIG. 2 shows the window stay 1 of FIG. 1 in the closed position. In the closed position, the plane of the window sash (not shown) is parallel to the plane of the window frame (not shown).

  From a comparison of FIGS. 1 and 2, it is understood how the arrangement of the connecting elements 5, 6 and the joints 6, 7, 9, 10 allows a relative movement between the frame plate 2 and the sash plate 3. Like. Accordingly, it will be further appreciated that this allows the window sash to be changed from the partially open position of FIG. 1 to the closed position of FIG. 2 (and back again). It will be further appreciated that in both the partially open position of FIG. 1 and the closed position of FIG. 2, the carriage 4 remains in the same first carriage position with respect to the frame plate. As will be described in more detail below, the carriage may be restricted from sliding on the frame plate by the latch mechanism 17.

  FIG. 3 shows the window stay 1 of FIG. 1 in the fully open position. In the fully open position, the plane of the window sash (not shown) is at an angle of 60 to 110 degrees with respect to the plane of the window frame (not shown). In the embodiment of FIG. 3, this angle is indicated generally by the dashed arc 18 and is approximately 71 degrees.

  From the comparison of FIGS. 1 and 3, it can be seen that the arrangement of the connecting elements 5, 6, the joints 6, 7, 9, 10, and the carriage 4 allows the relative movement between the frame plate 2 and the sash plate 3. Will be understood. Thus, it will be further appreciated that this allows the window sash to be changed (and restored again) from the partially open position of FIG. 1 to the fully open position of FIG. The carriage 4 can slide along the frame plate 2 from the first carriage position to the second carriage position to allow the window sash to be changed from the partially open position of FIG. 1 to the fully open position. It is.

  FIG. 4a shows a partial view of the window stay of FIG. 1 to show the carriage 4 in more detail. The carriage includes a carriage body 19 and a latch mechanism 17. The carriage body is configured to slide on the frame plate 2. The carriage 4 further includes a flange 20 extending along the side of the carriage 4, as shown in the bottom view of FIG. 4b. The flange 20 effectively surrounds the underside of the frame plate 2 and thus keeps the carriage in a fixed relation to the frame plate 2 while still keeping the carriage (as indicated by arrow A) the length of the frame plate. It is possible to slide along. The carriage body may be made from any suitable material. Preferably, the carriage body is made of plastic. This can be easily molded, resulting in less friction when the carriage body slides on the frame plate.

  The latch mechanism 17 of the carriage 4 includes a button 21 and a latch element 22. The latch element engages with a notch 23 provided on the frame plate 2. This limits the carriage 4 from sliding on the frame plate. When the button 21 is pressed, the latching element 22 is released from the notch 23, thus allowing the carriage to slide on the frame plate. During use, the user may wish to open the window sash from a partially open state to a fully open state, so that the button 21 can be depressed to release the latch mechanism and release the carriage.

  FIG. 5 shows a cross-sectional view of the carriage 4 of FIG. 1 to better illustrate the structure of the carriage. FIG. 1 shows the short arm 5 connected to the carriage by a rivet joint 7. The carriage body 19 is surrounded around the frame plate 2 by a flange 20 shown below the frame plate 2. The carriage 4 may further include an insert 24. The short arm 5 is connected to both the carriage body 19 and the insert 24. Such inserts may be made of metal, which further increases the rigidity of the carriage. The insert may also function as a structural safety device if the carriage body fails (eg, if the carriage body melts in a fire). The metal insert will hold the short arm and remain attached to the frame plate 2. The metal insert extends into the flange 20. In one embodiment, flange 20 may be integrally formed with the insert.

  FIG. 5 shows the latch mechanism 17 in more detail. The latch mechanism includes a button 21 and a latch element 22. The carriage body 19 is configured to house a latch mechanism. The button and the latch element may be formed together such that the latch element moves when the button is pressed. In FIG. 5, the latch mechanism 17 is shown in the latch position. In the latched position, the latch mechanism is engaged with the frame plate 2. In particular, the latch element 22 is engaged in a notch 23 located in the frame plate. With the latching element engaged in the notch, the carriage is latched and restricted from sliding on the frame plate 2. The button 21 is not pressed at the latch position. The latch mechanism includes a biasing element 25. The biasing element biases the latch mechanism to the latched position. The biasing element 25 is formed integrally with the carriage body 19. In a preferred embodiment, both the carriage body and the biasing element are formed of plastic. Such plastic may be selected to provide the necessary restoring force to the biasing element 25 (i.e., to provide sufficient force to bias the latch mechanism 17 into the latched position). . Forming the biasing element with the carriage body simplifies carriage manufacture and assembly. By not forming the biasing element with the latching mechanism, as will be described in more detail below, the latching mechanism can be formed from a wear resistant material such as metal.

  FIG. 6 shows the same view of the carriage as FIG. 5, but with the latch mechanism 17 in the unlatched position. In the unlatched position, the latch mechanism is released from the frame plate 2. In particular, the latch element is released from a notch 23 in the frame plate. With the latch element released from the notch, the carriage can slide on the frame plate 2. In the unlatched position, the button 21 is pressed. In one embodiment, the carriage body 19 may include a catch 26 configured to interact with an edge 27 of the latch mechanism to temporarily hold the latch mechanism in the unlatched position. Using such a catch, it is possible to avoid the need for the user to manually hold down the button 21 while the user attempts to slide the carriage 4 from its first carriage position.

  In the unlatched position, since the biasing element 25 is compressed, the biasing element tends to bias the latch mechanism 17 to the latched position. It will be appreciated that catch 26 should be configured such that biasing element 25 does not overcome the catch by itself. The latch mechanism includes a protrusion 28 extending away from the button 21. The frame plate 2 may include a recess 29 for accommodating the protrusion when the button is pressed. As the carriage 4 begins to slide along the frame plate 2, the protrusion 28 hits the edge 30 of the recess. The rim is appropriately curled so as to push the protrusion upward with the biasing element 25 enough to overcome the catch 26. Therefore, when the carriage 4 slides on the frame plate, the latch mechanism 17 is no longer held by the catch. Next, when the latch element 22 encounters the notch, the latch mechanism returns to the latched position.

In a preferred embodiment, the latch mechanism 17 is made from a wear resistant material such as a metal. It will be appreciated that the latch mechanism can be used many times over the life of a particular window stay. This is a component, especially a component that borders, in particular, other parts of the window stay 1, for example,
A latching element 22, which borders a notch 23 of the frame plate 2, which itself is preferably made of metal,
An edge 27 of the latch mechanism 17, which borders the catch 26;
A protruding portion 28 that borders the edge 30 of the recess,
Can add considerable wear and stress.

  Additional wear and stress is supported by the latch element. This is because (especially in the case of awning-type windows) the latching element carries a large part of the weight of the window sash via the short arm. By making the latching mechanism from a wear resistant material, these components will not wear and degrade as quickly. This will increase the ability of the window stay to function as intended over the life of the window stay.

  Returning to FIG. 1, further notches 31 and further recesses 32 are also shown in the frame plate 2. When the carriage 4 slides into the second carriage position in the fully open configuration (as shown in FIG. 3), the latching element engages the further notch 31 and thus latches the carriage into the second carriage position. It will be understood that. FIG. 7 shows a cross section of the window stay of FIG. FIG. 7 shows the latching element 22 engaging a further notch 31.

  From the above description, the frame plate 2 should be configured to cooperate with the carriage 4 so that the carriage is fixed on the frame plate while still being slidable along the length of the frame plate. Will be understood. In one embodiment, the frame plate may be extruded in a shape suitable for the particular geometry of the carriage. However, in a preferred embodiment, the frame plate is formed from stainless steel by stamping, pressing or a similar process.

  FIG. 8 shows the frame plate 2 of the window stay described above with reference to FIGS. The frame plate is formed from a substantially flat elongated member. The frame plate includes holes 11, 13 for receiving suitable fasteners for attaching the frame plate to a window frame (not shown). The frame plate includes an additional hole 33 for connection to a long arm (not shown) by a suitable joint. The frame plate also includes the notch 23, the recess 29, the further notch 31, and the further recess 32 described above. It will be appreciated that the holes, notches, and recesses may be formed in the frame plate by any suitable process, such as, for example, stamping, drilling, or stamping.

  The frame plate 2 includes a first attachment part 34 and a second attachment part 35. The first attachment portion and the second attachment portion are configured to attach the frame plate 2 to a window frame (not shown). For this purpose, the first mounting part 34 is provided with a hole 11 and the second mounting part is provided with a hole 13.

  Frame plate 2 also includes a track portion 36 extending between first mounting portion 34 and second mounting portion 35. The track section is connected to the first mounting section by a first rising section 37 and is connected to the second mounting section by a second rising section 38. The rising portions 37, 38 are generally angled or perpendicular to the plane of the frame plate, and serve to lift the track portion 36 with respect to the first mounting portion 34 and the second mounting portion 35. . The track portion is raised, thereby separating the track portion from the window frame (not shown) by a gap as shown by arrow B in FIG. 8 when the frame plate is installed. At least a portion of the length of the track portion 36, the gap extends from one end of the track portion 39 to the other end of the track portion (ie, the gap extends across the width of the track portion).

  The track section 36 provides an area where the carriage can slide (as described in connection with FIGS. 1-7). In particular, the gap is large enough to accommodate the flange of the carriage, so that the carriage can slide along the track while being held on the track. The track portion may include a depression 41. The depression may include an additional hole 12 for receiving a suitable fastener for attaching the depression to the window frame. The depression may increase the rigidity of the track. It will be appreciated that the depression is located near the center of the width of the track so that enough track remains to hold the carriage on the track (as indicated by arrow C). The depression may be positioned so that the depression does not obstruct the flange as the carriage slides over the depression.

  The first rising portion 37 and the second rising portion 38 may be formed by a stamping process. "Stamping" will be understood to include any press-type forming method. Those skilled in the art will understand how stamping works in general and need not describe it in detail. Briefly, stamping involves placing a generally flat elongate member in a stamping press having a suitable mold or die. The stamping press then applies sufficient pressure to the substantially flat elongated member, resulting in the substantially flat elongated member deforming into the shape of a mold or die. At this point, a first rising portion 37 and a second rising portion 38 are formed by the stamping process, so that the track portion 36 is further lifted with respect to the first mounting portion 34 and the second mounting portion 35. Results. The same stamping process may be used simultaneously to form some or all of the depressions 41, holes 11, 12, 13, 33, notches 23, 31 and recesses 29, 32.

  Preferably, the frame plate is made of metal. In certain embodiments, the frame plate is made of stainless steel.

  FIG. 9 shows a bottom view of the window stay 1 of FIG. 3 (ie in the fully open position). The carriage 4 is latched and at the second carriage position. The figure shows how the flange 20 wraps around the outer edge of the track to hold the carriage on the track 36 of the frame plate 2.

  The second rising portion 38 may prevent the carriage 4 from sliding off the track portion 36 in one direction. In particular, the carriage flange 20 cannot slide past the second riser. However, the first riser may include a notch 43 defining a shoulder 44 so that the first riser may not prevent the carriage 4 from sliding off the track. . In particular, the flange of the carriage can slide past the riser. That is, at least a part of the first rising portion has a width that traverses the length of the frame plate, and the width is smaller than the width of the track portion that traverses the length of the frame plate. In the embodiment of the frame plate 2 shown in FIG. 9, the notch 43 extends partially into the track portion 236 and completely extends into the first portion 34. The notch 43 allows the carriage to slide onto and off the track during assembly and disassembly of the window stay 1. In one embodiment, after the carriage 4 is slid over the track section (e.g., during the manufacture of the window stay), the first portion 34 of the frame plate 2 is appropriately lanced or staked. (Staked), a stop may be formed. Therefore, when the window stay 1 is installed, the stopping portion can permanently prevent the carriage 4 from sliding back and out of the track portion 36 past the notch 43.

  10a to 10c show the window stay 1 installed on the window 45, and show a part of both the window frame 46 and the window sash 47. FIG. It will be appreciated that the window stay can be installed using any suitable type of window frame and window sash, resulting in either an awning type window or a casement type window. Further, one or more (usually two or more) window stays may be provided for each specific window sash.

  In FIG. 10a, window 45 and window stay are in the closed position. The window stay is hidden by the window sash 47 and cannot be seen. In FIG. 10b, window 45 and window stay 1 are in a partially open position. The carriage 4 is located at the first carriage position with respect to the frame plate 2. In FIG. 10c, window 45 and window stay 1 are in the fully open position. The carriage 4 is located at the second carriage position with respect to the frame plate 2.

  FIGS. 11 to 20 c show a second embodiment of the window stay 1. This configuration is shown for a window stay smaller than that of FIGS. 1 to 10c. However, each embodiment can be extended to any desired sized window stay. The second embodiment is substantially the same as the first embodiment.

  FIG. 11 shows a window stay 1 including a frame plate 2 and a sash plate 3. The carriage 4 is configured to slide on the frame plate 2. Connecting elements in the form of short arms 5 and joints 6, 7 connect the carriage to the sash plate. Additional connecting elements in the form of long arms 8 and joints 9, 10 connect the frame plate to the sash plate. One or more holes 11, 12, 13, 14, 15 are provided in the frame plate and sash plate for receiving a suitable fastener for attaching the frame plate to the window frame and attaching the sash plate to the window sash. I have.

  FIG. 11 shows the window stay 1 in the partially open position. FIG. 12 shows the window stay 1 of FIG. 11 in the closed position. In both the partially open position of FIG. 11 and the closed position of FIG. 12, the carriage 4 remains at the same first carriage position with respect to the frame plate.

  FIG. 13 shows the window stay 1 of FIG. 11 in the fully open position. The carriage 4 slides along the frame plate 2 from the first carriage position to the second carriage position to allow the window sash to be moved from the partially open position of FIG. 11 to the fully open position of FIG. It is possible.

  FIG. 14a shows a partial view of the window stay of FIG. 1 to show the carriage 4 in more detail. The carriage is generally constructed generally similar to that of FIGS. 1 to 10c. However, as can be seen from a comparison between FIG. 4a and FIG. 14a, the orientation of the latch mechanism 17 is reversed.

  The carriage includes a carriage body 19 and a latch mechanism 17. The carriage body is configured to slide on the frame plate 2. The carriage 4 further includes a flange 20 extending along the side of the carriage 4, as shown in the bottom view of FIG. 14b. The flange 20 effectively surrounds the underside of the frame plate 2, thus keeping the carriage in a fixed relation to the frame plate 2, while still allowing the carriage to slide along the length of the frame plate. It has become. In this embodiment, the flange may be provided by an insert 24 and a return 20 a formed in the material of the carriage body 19.

  The latch mechanism 17 of the carriage 4 includes a button 21 and a latch element 22. The latch element engages with a notch 23 provided on the frame plate 2. This limits the carriage 4 from sliding on the frame plate. When the button 21 is pressed, the latching element 22 is released from the notch 23, thus allowing the carriage to slide on the frame plate.

  FIGS. 15 and 16 are cross-sectional views of the carriage 4. As shown in the drawing, a step 28 ′ that engages with the catch 26 at the position shown in FIG. 16 is formed on the protrusion 28 of the latch mechanism 17. Further, in this embodiment, the recess 29 in the frame plate 2 is formed by a stamping operation or a punching operation, so that the frame plate material is left in place, but is deformed to provide a recess 29 having an inclined structure. Therefore, the resistance to the movement of the protruding portion 28 coming out of the concave portion 29 is reduced. In other words, in this embodiment, the concave portion 29 is not constituted by an opening penetrating the frame plate. This structure is apparent from, for example, FIG.

  The carriage 4 may further include an insert 24 similar to that of FIGS. 1 to 10c. The latching mechanism includes a biasing element 25 similar to that of FIGS. 1 to 10c. However, in addition, a further spring 49 acting on the end face of the latch element 22 may be provided. The spring 49 also tends to push the latch element 22 into the release position shown in FIG. 15 by acting downward (as shown) on the end of the latch element 22.

  FIG. 11 also shows a further notch 31 and a further recess 32 in the frame plate 2, which operate similarly to those of FIGS. 1 to 10c.

  In this embodiment, one or more friction elements 50 may be provided on the frame plate 2. These friction elements act to stop the carriage 4 from moving quickly upward when the stay and window are in the fully open position and the latch element 22 is released. In the fully open position, when the latch element is released, the friction element 50 impedes or delays movement of the window sash. However, the sash can be moved in a user controlled manner after unlatching the latch mechanism. The user simply exerts a force on the window sash to overcome the frictional forces created by the frictional elements.

  Friction element 50 also retards movement of carriage 4 as carriage 4 approaches the fully open position. This helps limit damage to the mechanism that can be caused by sudden engagement with additional notches 31 and additional recesses 32 while traveling at too fast a speed.

  In the embodiment shown, the friction elements 50 consist only of raised ridges stamped or pressed into the frame plate 2, which engage grooves 51 formed in the carriage. However, in other embodiments, inserts or additional elements of a high friction material (eg, rubber or a suitable polymer) can be used.

  FIG. 18 shows the frame plate 2 of the window stay of FIG. FIG. 19 shows a bottom view of the window stay 1 in the fully open position.

  20a to 20c show the window stay 1 installed on the window, showing a part of both the window frame 46 and the window sash 47. FIG.

  The embodiment of FIGS. 11-20c is similar to the embodiment of FIGS. 1-10c, except for the differences described above. This embodiment can be made and used in a manner similar to that described above with reference to FIGS.

  FIGS. 21 to 30 c show a third embodiment of the window stay 1. Components similar to those in FIG. 1 are indicated by the same reference numerals. The window stay 1 includes a frame plate 2 for mounting on a window frame and a sash plate 3 for mounting on a window sash. The window stay 1 can be installed using any suitable type of window frame and window sash, resulting in either an awning type window or a casement type window.

  The carriage 4 is configured to slide on the frame plate 2. Connecting elements in the form of short arms 5 and joints 6, 7 connect the carriage 4 to the sash plate 3. Additional connecting elements in the form of long arms 8 and joints 9, 10 connect the frame plate 2 to the sash plate 3. The joints 6, 7, 9, 10 may be any suitable type of pivot joint, such as a friction rivet joint, depending on the application. The configuration of the connecting elements 5, 6 and the joints 6, 7, 9, 10 allows a relative movement between the frame plate 2 and the sash plate 3. This relative movement makes it possible to change the installed window sash from the closed position to the open position. One or more holes 11, 12, 13, 14, 15 for receiving suitable fasteners for attaching the frame plate 2 to the window frame and attaching the sash plate 3 to the window sash include the frame plate 2 and the sash plate 3. It is provided in.

  FIG. 21 shows the window stay 1 in the partially open position. In the partially open position, the plane of the window sash (not shown) is at an angle of 5 to 50 degrees with respect to the plane of the window frame (not shown). In the embodiment of FIG. 21, this angle is indicated generally by the dashed arc 16 and is approximately 30 degrees.

  FIG. 22 shows the window stay 1 of FIG. 21 in the closed position. In the closed position, the plane of the window sash (not shown) is parallel to the plane of the window frame (not shown).

  A comparison of FIGS. 21 and 22 shows how the arrangement of the connecting elements 5, 6 and the joints 6, 7, 9, 10 allows a relative movement between the frame plate 2 and the sash plate 3. . Accordingly, this allows the window sash to be changed from the partially open position in FIG. 21 to the closed position in FIG. 22 (and can be restored again). In both the partially open position of FIG. 21 and the closed position of FIG. 22, the carriage 4 remains at the same first carriage position with respect to the frame plate. The carriage can be restricted from sliding on the frame plate by the latch mechanism 217.

  FIG. 23 shows the window stay 1 of FIG. 21 in the fully open position. In the fully open position, the plane of the window sash (not shown) is at a 50-100 degree angle to the plane of the window frame (not shown). In the embodiment of FIG. 23, this angle is indicated generally by the dashed arc 18 and is about 73 degrees.

  21 and FIG. 23 show that the arrangement of the connecting elements 5, 6, the joints 6, 7, 9, 10, and the carriage 4 allows the relative movement between the frame plate 2 and the sash plate 3. Is shown. Accordingly, this makes it possible to change the window sash from the partially opened position in FIG. 21 to the fully opened position in FIG. 23 (and to return to the original position). In order to move the window sash from the partially open position of FIG. 21 to the fully open position, the carriage 4 is moved along the frame plate 2 from the first carriage position to the second carriage position.

  FIG. 24a shows the carriage 4 in more detail. The carriage 4 includes a carriage body 219 and a latch mechanism 217. The carriage body 219 is configured to slide on the frame plate 2. The carriage 4 further includes a flange 220 extending along the side of the carriage 4, as shown in the bottom view of FIG. 4b. The flange 220 effectively surrounds the underside of the frame plate 2 and thus secures the carriage to the frame plate 2, while still the carriage 4 (as indicated by arrow A) along the length of the frame plate. It is possible to slide. The carriage body may be made from any suitable material. Preferably, the carriage body is made of plastic. This can be easily molded, resulting in less friction when the carriage body slides on the frame plate.

  The latch mechanism 217 of the carriage 4 includes a selection switch 226 and a latch element 222. The latch element 222 engages with a stepped recess 223 provided in the frame plate 2. This limits the carriage 4 from sliding on the frame plate. When the selection switch 226 is moved sideways, the latching element 222 can slide freely on the ramp 221 in the recess 223, thus allowing the carriage to slide on the frame plate. During use, the user may wish to open the window sash from a partially open state to a fully open state, so that the selection switch 226 can be slid sideways to release the latch mechanism 217 and release the carriage 4. it can.

  FIG. 25 is a sectional view of the carriage 4 for better illustrating the structure of the carriage. The carriage 4 may further include a structural insert 224. The short arm 5 is connected to both the carriage body 219 and the insert 224. Such inserts may be made of metal, which further increases the rigidity of the carriage. The insert 224 may also function as a structural safety device if the carriage body fails (eg, if the carriage body melts in a fire). The insert 224 holds the short arm and remains attached to the frame plate 2. Insert 224 extends into flange 220. In one embodiment, flange 220 may be integrally formed with the insert.

  In FIG. 25, the latch mechanism 217 is shown in the latch position. In the latched position, the latch element 222 is engaged in a recess 223 located in the frame plate 2. With the latching element 222 engaged in the recess 223, the carriage 4 is latched and restricted from sliding on the frame plate 2. Latch mechanism 217 includes a biasing element 225. The biasing element biases or pushes latch element 222 into recess 223. The biasing element 225 may be a spring or the like to provide the necessary restoring force to the biasing element 225 (i.e., to apply sufficient force to bias the latching element 222 into the latched position). It may be something. The spring may be housed in a cylindrical recess in latching element 222 that is deferred to retainer 227 below select switch 226. Latch element 222 is limited to a single axis of movement perpendicular to frame plate 2.

  FIG. 26 shows the same view of the carriage as FIG. 25, but with the latch mechanism 217 in the unlatched position. In the unlatched position, the latch mechanism is released from the frame plate 2. In particular, the latch element 222 is released from the recess 223 in the frame plate 2. With the latch element released from the recess 223, the carriage can slide on the frame plate 2. In the latch release position, the selection switch 226 is moved in the lateral direction. In this position, when the user pushes the window further open, the latching element 222 can slide freely on the ramp 221 and onto the frame plate 2.

  The selection switch 226 is mounted between the carriage body 219 and the insert 224. Thereby, a groove is provided which crosses the sliding axis of the carriage 4. Accordingly, the user can move the selection switch 226 from the latched position and the unlatched position in the groove. The detent between select switch 226 and carriage body 219 provides a predetermined resistance so that select switch 226 is held in place at the desired latched position. The detent is designed to be easily traversed when the user moves between the latched positions. The detent also provides some audible feedback to the user when the new latch position is reached.

  In this way, the user need not keep holding the selector switch 226 in place while opening the window to its fully open position. This operation can be performed with one hand, i.e. first switching the position of the selector switch 226 and then opening the window to its fully open position.

  In a preferred embodiment, latch mechanism 217 is made from a wear-resistant material, such as plastic. Plastic is relatively inexpensive and it is easily possible to incorporate a spring therein.

  Returning to FIG. 21, the second concave portion 231 and the second inclined portion 232 also exist in the frame plate 2. When the carriage 4 slides into the second carriage position in the fully open configuration (as shown in FIG. 3), the latching element 222 engages the further recess 231 and thus moves the carriage to the second carriage position. Latch. FIG. 27 shows a cross section of the window stay of FIG. FIG. 27 shows the latch element 222 engaged in a further recess 231.

  As can be seen, the first recess 223 and the second recess 231 are generally opposed so that the locking position for the latch element 222 is a partially open position on one side and the other side. At the fully open position. The carriage 4 may include a marking 233 (seen in FIG. 24a) indicating a locked position for the latching element 222 for a partially open state or a fully open state.

  The frame plate 2 may be configured to cooperate with the carriage 4 so that the carriage is fixed on the frame plate while still being slidable along the length of the frame plate. In one embodiment, the frame plate may be extruded in a shape suitable for the particular geometry of the carriage. However, in a preferred embodiment, the frame plate is formed from stainless steel by stamping, pressing or a similar process.

  FIG. 28 shows the frame plate 2 of the window stay described above with reference to FIGS. The frame plate 2 is formed from a substantially flat elongated member. The frame plate includes holes 11, 13 for receiving suitable fasteners for attaching the frame plate to a window frame (not shown). The frame plate 2 includes an additional hole for connection to a long arm (not shown) by a joint 10 (not shown). The frame plate 2 also includes the first inclined portion 221, the first concave portion 223, the second inclined portion 232, and the second concave portion 231 described above. It will be appreciated that the holes, notches, and recesses may be formed in the frame plate by any suitable process, such as, for example, stamping, drilling, or stamping.

  The frame plate 2 includes a first attachment portion 234 and a second attachment portion 235. The first attachment portion and the second attachment portion are configured to attach the frame plate 2 to a window frame (not shown). For this purpose, the first mounting part 234 is provided with a hole 11 and the second mounting part 235 is provided with a hole 13.

  The frame plate 2 also includes a track portion 236 extending between the first mounting portion 234 and the second mounting portion 235. The track portion 236 is connected to the first mounting portion 234 by a first rising portion 237 and is connected to the second mounting portion 235 by a second rising portion 238. The risers 237, 238 are generally angled or perpendicular to the plane of the frame plate and serve to lift the track 236 relative to the first and second mountings 234, 235. . The track portion is raised, so that when the frame plate is installed, the track portion is separated from the window frame (not shown) by a gap as shown by arrow B in FIG. At least a portion of the length of the track portion 236, the gap extends from one edge of the track portion 236 to the other edge of the track portion (ie, the gap extends across the width of the track portion).

  The track portion 236 provides an area on the upper side where the carriage 4 can slide. In particular, the gap is sufficient to accommodate the flange 220 of the carriage, so that the carriage 4 is retained on the track 236 while being able to slide along the track 236.

  The first rising portion 237 and the second rising portion 238 may be formed by a stamping process. "Stamping" can include any stamping type molding process. Those skilled in the art will understand how stamping works in general and need not describe it in detail. Briefly, stamping involves placing a generally flat elongate member in a stamping press having a suitable mold or die. The stamping press then applies sufficient pressure to the substantially flat elongated member, resulting in the substantially flat elongated member deforming into the shape of a mold or die. At this point, the first rising portion 237 and the second rising portion 238 are formed by the stamping process, so that the track portion 236 is further lifted with respect to the first mounting portion 234 and the second mounting portion 235. Results. The same stamping process may be used simultaneously to form some or all of the holes 11, 12, 13, recesses 223, 231, and ramps 221 and 232. For example, the concave portions 223 and 231 and the inclined portions 221 and 232 may be formed by attaching one end of the inclined region to the frame plate 2 and separating the inclined region from the frame plate 2 at an angle. The other end of the inclined portion is attached to a rectangular portion formed by punching from the frame plate, but is spaced from the rectangular portion. The rectangular portion forms the base of the recess, and the side surface is open. The edge of the stamped opening formed in the frame plate 2 serves as a receiving plate for the latch element 222 in the latch position.

  Preferably, the frame plate 2 is made of metal. In a particular embodiment, the frame plate 2 is made of stainless steel. Providing the carriage 4 with a flange 220 surrounding the frame plate 2 may allow for a much simpler and / or cheaper extrusion of the frame plate. For example, in contrast to the U-shaped cross section used to constrain the carriage in prior art designs, the frame plate 2 can be substantially flat in cross-section. Also, the elasticity of the flange 20 may provide reduced resistance and / or longer life / greater reliability when the user moves between partially open and fully open.

  FIG. 29 shows a bottom view of the window stay 1 of FIG. 23 (ie in the fully open position). The carriage 4 is latched and at the second carriage position. The figure shows how the flange 220 wraps around the outer edge of the track 236 to hold the carriage on the track 236 of the frame plate 2.

  The first riser 237 may include a notch 243 defining a shoulder 244 so that the carriage flange can slide past the riser. That is, at least a part of the first rising portion has a width that traverses the length of the frame plate, and the width is smaller than the width of the track portion that traverses the length of the frame plate. In the embodiment of the frame plate 2 shown in FIG. 29, the notch 243 partially extends into the track portion 236 and completely extends into the first portion 234. The notch 243 allows the carriage to slide on and off the track during assembly and disassembly of the window stay 1. In one embodiment, after the carriage 4 is slid over the track portion (e.g., during the manufacture of the window stay), a rod is appropriately inserted or staked into the first portion 234 of the frame plate 2, 240, 241. (FIG. 28), a stop may be formed. Therefore, when the window stay 1 is installed, the carriage 4 can be slid back by the stop portion, and can be permanently prevented from coming off the track portion 236 past the notch 243.

  30a to 30c show the window stay 1 installed on the window 45, and show a part of both the window frame 46 and the window sash 47. The window stay can be installed with any suitable type of window frame and window sash, resulting in either an awning type window or a casement type window. One or more (usually two or more) window stays may be provided for each specific window sash.

  In FIG. 30a, window 45 and window stay 1 are in the closed position. The window stay 1 is hidden by the window sash 47 and cannot be seen. In FIG. 30b, window 45 and window stay 1 are in a partially open position. The carriage 4 is located at the first carriage position with respect to the frame plate 2. In FIG. 30c, window 45 and window stay 1 are in the fully open position. The carriage 4 is located at the second carriage position with respect to the frame plate 2.

  Although the window stay described above is a four-bar type window stay, those skilled in the art will understand how a carriage having a latch mechanism and a frame plate can be used in other configurations of a window stay having a sliding carriage. Will.

  FIGS. 31 to 33i show a window stay according to the fourth embodiment. The window stay includes a latch mechanism configured to engage the frame plate in the latched position to lock the carriage on the frame plate and to allow the carriage to slide on the frame plate in the unlatched position. The latch mechanism is configured to automatically re-latch as the carriage moves up or down. Due to the shape formed in the frame plate, the latching element automatically returns to its latched position.

  FIG. 31 shows a window stay according to the fourth embodiment. Components similar to those in FIG. 1 are indicated by the same reference numerals. The window stay includes a frame plate 2 for mounting on a window frame and a sash plate 3 for mounting on a window sash. One or more holes 11, 12 are provided in the frame plate to accommodate suitable fasteners for attaching the frame plate to the window frame. The window stay 1 can be installed using any suitable type of window frame and window sash, resulting in either an awning type window or a casement type window.

  The carriage 4 is configured to slide on the frame plate 2. A connecting element in the form of a short arm 5 connects the carriage 4 to the sash plate 3. As in the previous embodiment, this configuration allows relative movement between the frame plate 2 and the sash plate 3. This relative movement makes it possible to change the installed window sash from the closed position to the open position. The carriage includes a latch mechanism 400 that includes a latch element 401. Latch element 401 is configured to slide along an axis parallel to the longitudinal axis of the frame plate as the latch element moves with the carriage between the latched and unlatched positions. Latch element 401 is also configured to slide along a transverse axis relative to movement of the carriage body between a latched position and an unlatched position. The user may manually slide the latch element 401, and as the carriage 4 moves, a reset mechanism may slide the latch element 401 laterally to automatically re-latch. The frame plate 2 is provided with a first reset element 406 and a second reset element 408. Reset elements 406 and 408 are configured to automatically slide latch element 401 to relatch the latch mechanism as the carriage moves up or down.

  A spring (not shown) is provided behind the latch element to allow the latch element to move along the contour of the frame plate into and out of the frame plate. The spring may be any suitable type of spring, and may be made of plastic, metal, or any other suitable material. The spring may fit inside the latch element or may be behind the latch element. The spring may be located between the latch element and the carriage body. In one embodiment, the spring is a plastic spring that is press-fit into the latch element. In other embodiments, the spring may be a coil spring located behind the latch element, or the spring and the latch mechanism may be insert molded so that it can be one piece of two materials, or And the latch mechanism can be a single piece made of plastic.

  FIG. 32a shows a perspective view of the frame plate 2 according to the fourth embodiment. FIG. 32b shows a front view of the frame plate of FIG. 32a, and FIG. 32c shows a side view of the frame plate 32a. The frame plate includes a first carriage stop 402 and a second carriage stop 404 near the top of the frame plate. When the stay is in the normal open mode, the carriage abuts the first carriage stop 402. When the stay is in the cleaning mode, the carriage contacts the second carriage stop 404.

  To implement the automatic latch described above, the frame plate 2 includes a first reset element 406 and a second reset element 408. The reset element is configured to return the latch mechanism to the latched position after any movement of the carriage. Reset elements 406 and 408 include stepped recesses 405 and 407. The stepped recess is defined by angled rear surfaces 410 and 412, ramps 414, 415, 416 and 417, and locking surfaces 422 and 424. The configuration shown is merely an example, and other shapes and configurations of the reset element may be used to reset the latch as the latch element passes through the reset element. In the illustrated embodiment, the reset element is formed integrally with the frame plate 2, but in other embodiments, the reset element may be formed separately and fixed to the frame plate 2 in a suitable manner.

  The screw hole 12 is small enough so that it does not catch on the latch element. The spring behind the latch may be slightly compressed and relaxed as the latch moves over the spring.

  In the normal open mode, the latch element is on the right in the latched position. Lock surface 422 holds the latch mechanism in the latched position. To move the carriage, the user can push the latch element to the left, so that the latch element moves over the locking surface 422 as the latch element moves down.

  As the carriage moves down, the first reset element 406 pushes the latch element back to the latched position. The angled surface 410 of the first reset element 406 guides or pushes the latch element to the right toward the latched position. From this position, the carriage can be moved down, the ramp 415 raised, and then the ramp 416 lowered, past the ramp 417 and latched into the bottom cleaning mode. Alternatively, if the user changes his mind on the way, the carriage will still be locked if returned to open mode.

  Similarly, in the cleaning mode, the latch element is on the right side in the latched position. Lock surface 424 holds the latch mechanism in the latched position. To move the carriage, the user can push the latching element to the left so that the carriage crosses the locking surface 424, thereby moving the carriage up. As the carriage moves up, the second reset element 408 pushes the latch element back to the latched position. Angled surface 412 of second reset element 408 (which is a mirror of angled surface 410) pushes the latch element to the right toward the latched position. From this position, the carriage can be moved up and up the ramp 416 and down the ramp 415 and then over the ramp 414 to latch into the upper open mode. Alternatively, if the user changes his mind in the middle, the carriage will still be locked if returned to the cleaning mode.

  The lower surface of the latch mechanism is a flat surface that fits with the flat surface on the frame plate recess.

  33a-33e show a series of movements of the carriage 4 from an open latch position at the top of the frame plate to a cleaning latch position at the bottom of the frame plate, and then back up to an automatic latch position.

  FIG. 33a shows a front view of a portion of a window stay according to the fourth embodiment. In the window stay, the latch mechanism 400 is in the latch position, and the window is open. The carriage 4 is near the upper part of the frame plate 2. Latch element 401 is on the right side of carriage 4. Carriage 4 and latch element 401 may (but need not) include markings 233. In FIG. 33a, the markings are not aligned, indicating that the latch mechanism is in the latched position.

  FIG. 33b shows the window stay with the latch element 401 moved to the left to release the latch. In this position, the markings 233 are aligned. When the latch element 401 is in this unlatched position, the carriage 4 can freely move up and down.

  FIG. 33c shows the window stay with the carriage 4 moving down. As will be described in more detail below, as the carriage 4 moves down, the shape formed on the frame (ie, the reset element) causes the latch element 401 to automatically move to the right and return to the latched position.

  FIG. 33d shows the carriage in the self-latching position. When the latching element 401 is placed as shown, the carriage latches into either a top position or a bottom position (depending on whether it moves up or down).

  FIG. 33e shows the window stay moving down to be latched in the bottom position.

  FIG. 33f shows the window stay in the latched position. The window stay is latched in a bottom position that may be suitable for cleaning the window.

  FIG. 33g shows the window stay in the bottom position, with the latch element 401 moved to the left and the markings aligned. The marking may or may not be on the part. When the latching element is in this position, the latching mechanism is unlatched and the carriage is free to return up.

  FIG. 33h shows the window stay in the unlatched position and moving up. As the carriage moves up, the latch element 401 automatically returns to the latched position due to the shape formed in the frame plate.

  FIG. 33i shows the window stay returned to the self-latching position. When the latching element 401 is in this self-latching position, the carriage latches in either a top position or a bottom position.

  Figures 34-39 show various positions of the latch mechanism. Each figure shows the latch element in multiple positions.

  34A and 34B show a state where the stay is unlocked from the normal operation mode. 501A indicates that the latch is in the locked position. The spring behind the latch is relaxed. The user slides the button (and the included springs and latches) across position 501B to release the carriage. The latch disengages from the locking surface and the carriage is free to move down. The spring is still relaxed. Reference numeral 503 indicates a position where the latch contacts the angled surface on the frame plate while the carriage moves down, and the angled surface starts sliding the latch (and the button) and returns to the lock side. Reference numeral 504 indicates a state in which the latch continues to move in the lateral direction as the carriage moves down. Reference numeral 505 indicates a state in which the latch returns to the lock side at this time, moves up the slope, and compresses the spring. From this position, the user can close the window or keep the window open and put the window into cleaning mode.

  35A and 35B show a state in which the stay is returned to the normal operation position. At 505, the latch returns to the lock side, ascending the ramp and compressing the spring. At 506, the latch moves back up the lock side as the carriage moves up. The spring is relaxed in this position. At 507, the latch is up the ramp and compressing the spring. At 508, as the carriage moves further up, the latch is pressed against the locking surface by the spring. At this time, the carriage / button / latch is at the same position as 501 in FIGS. 34A and 34B.

  FIGS. 36A and 36B show a state in which the stay is moved to the cleaning mode. At 505, the latch returns to the lock side and rises up the ramp to compress the spring. At 509, as the carriage moves down, the latch element rides over the faceplate surface including the threaded holes. The spring is compressed. At 510, the latch is down the ramp and the spring is relaxed. At 511, the latch moves up the next ramp and the spring is compressed. At 512, as the carriage moves further down, the latch is pressed against the locking surface by a spring. At this time, the stay is locked in the cleaning mode. The spring is relaxed.

  FIGS. 37A and 37B show a state where the stay is unlocked from the cleaning mode. 512 indicates that the latch is in the locked position. The spring behind the latch is relaxed 513. The user releases the carriage by sliding the button (and the springs and latches contained therein) across this position. The latch disengages from the locking surface and the carriage is free to move up. The spring is still relaxed. At 514, as the carriage moves up, the latch contacts the angled surface on the frame plate, which begins to slide the latch (and button) back to the locked side. At 515, the latch continues to move laterally as the carriage moves up. At 516, the latch has now returned to the locked side and has moved up the ramp to compress the spring. From this position, the user can keep the window closed or return it to the cleaning mode.

  38A and 38B show a state in which the stay is returned to the cleaning mode. At 516, the latch returns to the lock side, raises the ramp, and compresses the plastic spring. At 517, as the carriage moves down, the latch moves back down the lock side. The spring is relaxed in this position. At 518, the latch rises up the ramp and compresses the spring. At 519, the latch is pressed against the locking surface by the spring as the carriage is moved still further down. At this time, the carriage / button / latch is at the same position as 512.

  39A and 39B show a state where the stay is moved to the normal operation mode. At 516, the latch returns to the lock side, raising the ramp and compressing the spring. At 520, as the carriage moves upward, the latch element rides over the faceplate surface including the screw holes. The spring is compressed. At 521, the latch descends the ramp and the spring relaxes. At 522, the latch moves up the next ramp and the spring is compressed. At 523, the latch is pressed against the locking surface by a spring as the carriage moves further up. At this time, the stay is locked in the normal operation mode. The spring is relaxed. This is the same position as 501.

  40a to 49b show various components of a window stay according to the fifth embodiment. Similar to the stay shown in the fourth embodiment, the window stay of the fifth embodiment engages with the frame plate at the latch position to lock the carriage on the frame plate, and moves the carriage to the frame at the unlatched position. And a latch mechanism configured to allow sliding on the plate. In addition to the relatching mechanism described for the fourth embodiment, the fifth embodiment has an additional relatching mechanism configured to relatch the latch as the sash plate closes on the carriage. . In the view shown for the fifth embodiment, the button is moved to the right to unlatch (in contrast, the view for the fourth embodiment shows the unlatched state on the left side ).

  The latch mechanism of the fifth embodiment includes a button 502 configured to border and re-latch the sash plate as the sash plate moves over or around the latch mechanism. Thus, in addition to the automatic latch associated with carriage movement, the stay automatically latches as the stay is closed. This is accomplished by a sash plate feature that biases the button 502 on the carriage to the latched position as the window sash is closed. This self-latching feature begins to function when the user moves the button from the awning position to the unlatched position, but does not move the window to the cleaning position (leave it in the awning position). When the window is closed again, the stay latches back to the awning position. The self-latching feature eliminates potential risks to the user due to unexpected movement of the window, as well as damage to the window sash, frame, and stay, if left unlatched.

  FIGS. 40a to 49b show various components of the window stay according to this fifth embodiment, wherein components similar to the components of FIG. 1 have the same reference numbers. The window stay 1 can be installed using any suitable type of window frame and window sash, resulting in either an awning type window or a casement type window.

  FIG. 40 a shows a perspective view of the sash plate 3. FIG. 40b is a bottom perspective view of the sash plate of FIG. 40a. The sash plate 3 includes a raised portion 500. The ridge 500 on the sash plate 3 interacts with the button 502 to automatically latch the stay.

  Depending on the thickness of the frame and sash plate, the height of the cavity, and the offset in the arm, the range of height required for the ridge 500 will vary. When the height of the mounting cavity (the distance between the back surface of the frame plate 2 and the back surface of the sash plate 3) is the maximum value of the allowable error, the height of the raised portion 500 contacts the latch mechanism, but the When the error is at its minimum, it is high enough to not interfere with the stay function. Generally, the cavity tolerance is ± 1.0 mm, but this can vary depending on the type and shape of the stay. In the illustrated embodiment, a height of the ridge 500 that is 1.25 mm above the top of the sash plate 2 is sufficient to make a border within this tolerance.

  The width of the ridge 500 is based on its position and the angle at which the sash plate 3 approaches the latch mechanism when the window is closed. The width of the ridge 500 may be larger or smaller than the area bordering the button 502, depending on the features on the sash plate 3 and the frame plate 2.

  In the illustrated embodiment, the ridge 500 is integrally formed with the sash plate. In other embodiments, the ridge 500 may be an additional component that is clipped onto the sash plate 2 or otherwise glued to the sash plate 2. In this second variant, the ridge 500 can be made from another material, for example plastic.

  In the embodiment illustrated in FIGS. 40a and 40b, a fastener head cavity 524 is included in the ridge 500. It may be stamped simultaneously during manufacture. This is possible because the fastener head cavity is close to where the ridge 500 needs to be placed.

  FIG. 41a shows a perspective view of an automatic latch button 502 according to the fifth embodiment. Button 502 includes an upright 512 and a base 514. The upright 512 is pushed and relatched by the reset element (ridge 500). The base 514 of the button 502 includes a deformable arm 534 configured to interact with the biasing ramp of the carriage (described further below) to bias the latch to the latched position. FIG. 41b shows a bottom perspective view of the button 502, FIG. 41c shows a right side view of the button 502, and FIG. 41d shows a top view of the button 502.

  42a shows a perspective view of the button 502 having a deformable portion 608, FIG. 42b shows a bottom perspective view of the button 502 of FIG. 42a, FIG. 42c shows a right side view of the button 502, and FIG. FIG. Generally, the mounting stay cavity has a tolerance of ± 1.0 mm, but can vary depending on the type and shape of the stay. To address errors during installation, the deformable portion 608 interacts with the sash plate ridge 500 earlier than would interact with the button 502 shown in the embodiment illustrated in FIGS. And ensure that installation errors do not affect the automatic latch function. The deformable portion 608 engages the ridge 500 at a window opening angle greater than the angle required to border the upright 512 in FIGS. 41a-41d. The required amount of deformation is determined by the total amount of movement of the button 502 from the unlatched position to the latched position and the amount of compression required by the deformable part 608 in the closed position. When the window is in the closed position, the deformable portion 608 is partially or completely compressed by the ridge 500, depending on the width of the installation cavity location. Maximum compression occurs at the minimum cavity width and minimum compression occurs at the maximum cavity width. The amount of compression of the ridge 500 that presses the upright 512 ensures that the button 502 remains biased toward the latched position and holds the button in the latched position until the window opens to a greater open angle.

  FIG. 43a shows a bottom view of the carriage 4 without the buttons 502 installed. The carriage 4 includes a recess 530 where the button is located. The recess 530 includes a biasing ramp 506 that biases the button toward the latched position of the button in the carriage 4 when the button 502 is at any position other than the latched position. FIG. 43b shows a bottom view of the carriage with the button 502 in the latched position.

  FIG. 43E is a detailed view of the biasing inclined portion 506. The ramp 506 includes a flat 548 for the unlatched position, a small raised area for the detent stop 550, and an angled surface 552 starting from the detent stop and angled toward the latched position. . Angled surface 552 is complementary to the shape of deformable arm 534 of button 502.

  The deformable arm 534 is located in the inclined portion 506 of the carriage 4. FIG. 43c shows a bottom view of the carriage 4 with the button 502 in the unlatched position. The deformable arm 534 functions as a detent spring for an unlatched position of a button in the carriage 4.

  FIG. 43D shows an exploded view of the carriage 4 and button 502 assembly. Button 502 is located within recess 530 of the carriage. Opening 532 allows the upright portion of button 502 to protrude through recess 530.

  When the window is closed (either with respect to the plane of the button or the deformable feature of the button), the deformable arm on the button moves away from the unlatched position as the sash plate moves the button. Moving. Due to the spring and ramp design of the deformable arm, the movement of the button is biased toward the latched position, so that the latch moves completely into the latched position.

  Figures 44a-46b show, in an embodiment with uprights 512, a side view of a closing window stay with buttons.

  FIG. 44a shows a side view of a half-open window stay, and FIG. 44b shows a cross-sectional view through AA of FIG. 44a. This shows the button 502 in the unlatched position, with the sash plate 3 approaching the carriage 4. The raised portion 500 of the sash plate 3 is close to the upright portion 512 of the button 502. The button 502 is on the right side inside the recess 523 of the carriage 4.

  FIG. 45a shows a side view of the window stay with the window fully closed so that the ridge 500 on the sash plate 2 contacts the upright 512 on the button 502. FIG. FIG. 45b shows a section through BB in FIG. 45a. Button 502 is still in the unlatched position.

  FIG. 46a shows a side view of the closed window stay, and FIG. 46b shows a cross section through CC of FIG. 45a. The latch mechanism is pushed to the left inside the concave portion 523 of the carriage 4 and enters the latch position.

  Figures 47a-49b show stepwise side views of a closing window stay in a button embodiment with a deformable arm.

  While the invention has been illustrated and described in detail by describing embodiments of the invention, it is intended that the appended claims be limited to such details or in any way limiting. Is not what the applicant intends. Furthermore, the above-described embodiments may be implemented individually or, where appropriate, combined. Additional advantages and modifications, including combinations of the embodiments described above, will be readily apparent to those skilled in the art. Thus, the invention in its broader aspects is not limited to the specific details, representative devices and methods, and exemplary embodiments shown and described. Accordingly, departures may be made from such details without departing from the spirit or scope of applicant's general inventive concept.

Claims (27)

A frame plate configured for attachment to a window frame,
A sash plate configured for attachment to a window sash,
A carriage configured to slide on the frame plate,
A connection element for connecting the carriage to the sash plate,
The carriage,
A carriage body,
A latch element configured to engage the frame plate in a latched position to lock the carriage on the frame plate and to allow the carriage to slide on the frame plate in an unlatched position; Including
A window stay, wherein the frame plate includes one or more reset elements configured to return the latch element to the latched position after any sliding of a carriage.   The latch element is configured to slide along an axis parallel to a longitudinal axis of the frame plate, engage the reset element, and move between the unlatched position and the latched position. The window stay according to claim 1, which is provided.   The window stay of claim 2, wherein the one or more reset elements include a stepped recess including an angled surface.   4. The window stay of claim 3, wherein the angled surface pushes the latch element into the latched position as the carriage moves.   The stepped recess further comprises at least one inclined surface, and a locking surface, wherein the latch element is locked behind the locking surface in the latched position and is released from the locking surface in the unlatched position to form the inclined surface. The window stay according to claim 3, which slides on a surface.   The window stay according to claim 5, wherein the latch element is supported by a spring.   7. The window stay according to claim 6, wherein the spring is compressed as the latch element slides up a slope.   The window stay according to any one of claims 1 to 7, wherein the one or more reset elements are formed integrally with the frame plate.   In a first configuration of the window stay, the latch element is in the latch position, the carriage is in a first carriage position on the frame plate, and in a second configuration of the window stay, the latch element is 9. The window stay according to claim 1, wherein the carriage is in the unlatched position and the carriage is slidable on the frame plate.   When in the first configuration, the sash plate can be moved between a closed position and a partially open position with respect to the frame plate, and when the window stay is in the second configuration, 10. The window stay according to claim 9, wherein the sash plate can be moved between the partially open position and the fully open position with respect to the frame plate.   The closed position corresponds to the plane of the window sash being parallel to the plane of the window frame, and the partially open position corresponds to the plane of the window sash being 5 to 50 relative to the plane of the window frame. 11. The fully open position, corresponding to being at an angle of degrees, corresponding to the plane of the window sash being at an angle of 50-110 degrees with respect to the plane of the window frame. Window stay.   A window stay according to any of the preceding claims, further comprising an additional connecting element for connecting the frame plate to the sash plate.   13. The window stay according to claim 1, wherein the latch position and the unlatched position of the latch element are on a horizontal axis with respect to a sliding axis of the carriage.   14. The latch of claim 13, wherein the latch element is mounted within the carriage body and the latch element is configured to slide along the horizontal axis between the unlatched position and the latched position. Window stay.   When the carriage is in a first carriage position on the frame plate, the sash plate is configured to move between a closed position and a partially open position with respect to the frame plate, wherein the carriage is The window stay of claim 1, wherein the sash plate is configured to move to a fully open position relative to the frame plate when in a second carriage position on the plate.   The closed position corresponds to the plane of the window sash being parallel to the plane of the window frame, and the partially open position corresponds to the plane of the window sash being 10 to 60 with respect to the plane of the window frame. 16. The fully open position corresponding to being at an angle of degrees, wherein the fully open position corresponds to the plane being at an angle of 60 to 110 degrees with respect to the plane of the window frame. Window stay.   17. The window stay according to claim 15, comprising two opposed stepped recesses, each of the stepped recesses corresponding to the first carriage position and the second carriage position, respectively. 18. A frame plate configured for attachment to a window frame,
A sash plate configured for attachment to a window sash,
A carriage configured to slide on the frame plate,
A connection element for connecting the carriage to the sash plate,
The carriage,
A carriage body,
A latch mechanism configured to engage the frame plate in a latched position to lock the carriage on the frame plate and to allow the carriage to slide on the frame plate in an unlatched position; ,
One or more reset elements on the sash plate configured to return the latch mechanism to the latched position as the sash plate closes on the carriage.   19. The window stay of claim 18, wherein the sash plate closes on the carriage when the window is closed.   The latch mechanism includes a latch element and a stepped recess in the frame plate, and the latch element is configured to move the latch position and the latch release position along an axis parallel to a longitudinal axis of the frame plate. 20. The window stay according to claim 18 or 19, configured to slide between the windows.   21. The window stay of claim 20, wherein the carriage includes a button movably connected to the latch element.   22. The window stay of claim 21, wherein the reset element is configured to push the button into the latched position as the sash plate closes on the carriage.   23. The window stay according to claim 21 or claim 22, wherein the reset element is a ridge raised toward the carriage.   23. The window stay according to claim 21 or claim 22, wherein the button slides between the latched position and the unlatched position so as to cross a direction in which a carriage slides.   25. The window stay of claim 24, wherein the carriage recess is configured to interact with a feature of the button to bias the button toward the latched position.   26. Any of the claims 21 to 25, wherein the latch element is spring-connected to the button, whereby the latch element is movable axially away from and towards the carriage. The window stay described in.   27. The window stay according to any one of claims 21 to 26, wherein the button includes a deformable portion configured to interact with the reset element.

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