JP6643801B2 - Window stay - Google Patents

Description

  The present invention relates to window stays, and in particular, the present invention relates to sliding window stays.

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

  Some window stays can be provided with 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. This allows the carriage to slide as part of the window opening and closing mechanism.

  For example, U.S. Pat. No. 6,077,098, the contents of which are incorporated herein by reference, discloses a so-called "four-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 arm configuration is such that the sash plate moves relative to the frame plate (corresponding to the opening of the window from the closed position to the first open position). I can do it. In a further operation, the locking means is released to allow the carriage to slide on the frame plate, whereby the window can be further opened from the first open position to the second open position. The locking means taught by Patent Document 1 includes a button integrally formed with the protruding portion. 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 integral with the button.

  A problem related to the window stay disclosed in Patent Document 1 is that since the spring component is made of plastic, the buttons and the protrusions (integrally formed with the spring component) are also made of plastic. The protrusions are subject to significant 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 sliding carriages is that the frame plate must be configured to hold the carriage. One approach is to form the frame using an extrusion process so that the frame has a profile suitable for use as a truck. For example, a frame plate of a window stay disclosed in Patent Document 1 is an extruded extended portion having a roughly U-shaped outer shape, and a carriage is nested in a sliding configuration within the U-shaped outer shape. Built in.

  The prior art as referred to herein does not necessarily form a part of common general knowledge.

UK Patent No. 231324B

  It is an object of the present invention to provide an improved window stay, or at least to provide useful options to the public.

  In one aspect, the invention includes: a frame plate configured for mounting to a window frame; a sash plate configured for mounting to a window sash; a carriage configured to slide on the frame plate; With respect to a window stay, including a connecting element that connects to the plate, the carriage is: a carriage body; engages the frame plate in a latched position to limit sliding of the carriage on the frame plate and from the frame plate in an unlatched position. A latch mechanism disengaged to permit sliding of the carriage over the frame plate; one or more latch mechanisms integrally formed with the carriage body and configured to bias the latch mechanism to the latched position. Including a biasing element.

  Preferably, the carriage body is formed of plastic. More preferably, the latch mechanism is formed of metal.

  Preferably, in the first configuration of the window stay, the latch mechanism is in the latched position, the carriage is in the first carriage position on the frame plate, and in the second configuration of the window stay, the latch mechanism is in the unlatched position. Yes, the carriage can slide on the frame plate. More preferably, when the window stay is in the first configuration, the sash plate can be moved between the closed position and the partially open position with respect to the frame plate, and when the window stay is in the second configuration, the sash plate can be moved. Is movable between a partially open position and a fully open position with respect to the frame plate. More preferably, the closed position corresponds to a situation where the plane of the window sash is parallel to the plane of the window frame, and the partially open position forms an angle of 10-60 ° with the plane of the window sash with the plane of the window frame. Corresponding to the condition, the fully open position corresponds to the condition where the plane of the window sash forms an angle of 60-110 with the plane of the window frame.

  Preferably, the carriage includes at least one flange configured to enclose a longitudinal edge of the frame plate.

  Preferably, the carriage includes a metal insert. More preferably, the metal insert extends into at least one flange.

  Preferably, the window stay further includes an additional connecting element for connecting the frame plate to the sash plate.

  In another aspect, the invention includes: 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; Regarding a window stay including a connection element for connecting to a sash plate, the frame plate comprises: a first mounting portion and a second mounting portion configured for mounting the frame plate to the window frame; and the first mounting portion and the first mounting portion. A track portion extending between the first mounting portion and the second mounting portion so as to be separated from the window frame by a gap in the installed window stay at the installed window stay.

  Preferably, the track portion is formed by stamping a generally elongate member so that the track portion can be lifted relative to the first mounting portion and the second mounting portion.

  Preferably, the frame plate is made of stainless steel.

  Preferably, the frame plate is formed of an approximately elongated member.

  Preferably, the first raised portion connects the first mounting portion to the track portion. More preferably, the second raised portion connects the second mounting portion to the track portion. More preferably, at least a portion of the first raised portion has a width transverse to the length of the frame plate that is less than the width of the track portion transverse to the length of the frame plate.

  Preferably, the gap extends from a first side of the track portion to a second side of the track portion.

  Preferably, the carriage is configured to slide on the track portion. More preferably, the carriage includes at least one flange extending along a side of the carriage and located at least partially within the gap.

  Preferably, the track portion includes an indent configured for attachment to the frame plate. More preferably, the indent is positioned toward the center of the transverse width of the track portion.

  Preferably, the window stay further comprises an additional connecting element for connecting the frame plate to the sash plate.

  In a further aspect, the invention includes: a frame plate configured for mounting to a window frame; a sash plate configured for mounting to a window sash; a carriage configured to slide on the frame plate; A connection element for connecting to the sash plate; a latch mechanism for limiting sliding of the carriage on the frame plate in the latched position and enabling sliding of the carriage on the frame plate in the unlatched position; Provide a window stay that includes one or more frictional elements arranged to prevent or mitigate sliding of the carriage along the frame plate when in a non-latched position.

  Preferably, the latch mechanism is engaged in the fully open position and the one or more friction elements prevent movement of the carriage from the fully open position if the user unlatches the latch mechanism during use. Or it is arranged to relax.

  Preferably, in use, in the fully open position, the user can place the latch mechanism in an unlatched state and apply a force to slide the carriage along the frame plate that exceeds the frictional force generated by the friction element.

  It is known that the terms "comprise," "comprises," and "comprising" can be interpreted under various jurisdictions in either an exclusive or an inclusive sense. For the purposes of this specification, these terms have the generic meaning unless otherwise specified, i.e., they include the listed components whose use is directly mentioned, and in some cases It is to be understood that this also includes other unspecified components or elements.

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

FIG. 1 is an isometric view of the window stay 1 according to the first embodiment in a partially open position. FIG. 2 is an isometric view of the window stay of FIG. 1 in a closed position. FIG. 3 is an isometric view of the window stay of FIG. 1 in a fully open position. 4a and 4b are partial isometric views of the window stay of FIG. FIG. 5 is a partial cross-sectional view of the window stay of FIG. 1 in a state where a latch mechanism is in a latch position. FIG. 6 is a partial cross-sectional view of the window stay of FIG. 1 in a state where a latch mechanism is in a non-latch position. FIG. 7 is a sectional view of the window stay of FIG. FIG. 8 is an isometric view of a frame plate according to one embodiment. FIG. 9 is an orthographic bottom view of the window stay of FIG. FIG. 10a is a partial isometric view of the window including the window stay in the closed position. FIG. 10b is a partial isometric view of the window including the window stay in the partially open position. FIG. 10c is a partial isometric view of the window including the window stay in the fully open position. FIG. 11 is an isometric view of the window stay 1 according to a further embodiment in a partially open position. FIG. 12 is an isometric view of the window stay of FIG. 11 in a closed position. FIG. 13 is an isometric view of the window stay of FIG. 11 in a fully open position. 14a and 14b are partial isometric views of the window stay of FIG. FIG. 15 is a partial cross-sectional view of the window stay of FIG. 11 in a state where the latch mechanism is at a latch position. FIG. 16 is a partial cross-sectional view of the window stay of FIG. 11 in a state where the latch mechanism is in a non-latch position. FIG. 17 is a sectional view of the window stay of FIG. FIG. 18 is an isometric view of a frame plate according to a further embodiment. FIG. 19 is an orthographic bottom view of the window stay of FIG. FIG. 20a is a partial isometric view of the window including the window stay in the closed position. FIG. 20b is a partial isometric view of the window including the window stay in the partially open position. FIG. 20c is a partial isometric view of the window including the window stay in the fully open position.

  FIG. 1 shows a window stay 1 according to one embodiment. The window stay 1 includes a frame plate 2 for installing on a window frame and a sash plate 3 for installing on a window sash. Although neither the window frame nor the window sash is shown in FIG. 1, the window stay of the present invention can be implemented using any type of window frame and window sash suitable for constructing an awning or casement window. Those skilled in the art will understand how to install.

  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 riveted joint known in this application. 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. As will be described in more detail below, this relative movement can change the installed window from a closed position to an open position. One or more holes 11, 12, 13, 14, 15 are provided for attaching the frame plate to the window frame and for receiving suitable fasteners for attaching the sash plate to the window sash. Provided on a board.

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

  FIG. 2 shows the window stay 1 of FIG. 1 in the closed position. In this 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, how the arrangement of the connecting elements 5, 6 and the joints 6, 7, 9, 10 enables a relative movement between the frame plate 2 and the sash plate 3. Can understand. Thus, it can be further appreciated that the above arrangement allows the window sash to be changed from the partially open position of FIG. 1 to the closed position of FIG. 2 (and back to its original position). It can further be seen that the carriage 4 is in the same first carriage position with respect to the frame plate, both for the partially open position of FIG. 1 and for the closed position of FIG. As will be described in more detail below, the latch mechanism 17 can limit sliding of the carriage on the frame plate.

  FIG. 3 shows the window stay 1 of FIG. 1 in the fully open position. In this fully open position, the plane of the window sash (not shown) forms an angle of 60-110 with the plane of the window frame (not shown). In the embodiment of FIG. 3, this angle is indicated schematically by a dotted arc 18 and is approximately 71 °.

  1 and 3 show how the relative movement between the frame plate 2 and the sash plate 3 is possible by the arrangement of the connecting elements 5, 6, the joints 6, 7, 9, 10, and the carriage 4. I can understand what it is. Thus, it can be further appreciated that the above arrangement allows the window sash to be changed from the partially open position of FIG. 1 to the fully open position of FIG. 3 (and back to its original position). To change the window sash from the partially open position of FIG. 1 to the fully open position, the carriage 4 is slid along the frame plate 2 from the first carriage position to the second carriage position.

  FIG. 4a is 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 wraps the underside of the frame plate 2 so that the carriage is slidable along the length of the frame plate (as indicated by arrow A) and is secured to the frame plate 2. Maintain a relationship. The carriage body may be made of any suitable material. Preferably, the carriage body is made of plastic. Plastic is easy to mold, so that friction when the carriage body slides on the frame plate can be reduced.

  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. Thereby, the sliding of the carriage 4 on the frame plate is restricted. When the button 21 is depressed, the latch element 22 is disengaged from the notch 23 so that the carriage can slide on the frame plate. In use, the user may want to open the window sash from a partially open state to a fully open state, where the user depresses the button 21 to deactivate the latch mechanism and free the carriage.

  FIG. 5 is a cross-sectional view of the carriage 4 of FIG. 1 for better illustrating the structure of the carriage. FIG. 5 shows the short arm 5 connected to the carriage by a rivet joint 7. The carriage body 19 wraps the frame plate 2 with 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 can be made of metal, which can add further rigidity to the carriage. The insert can also function as a structural safety device in the event that the carriage body fails (eg, the carriage body melts due to a fire). The metal insert holds the short arm and remains attached to the frame plate 2. The metal insert extends into the flange 20. In one embodiment, the flange 20 can be formed integrally 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. Both the button and the latching element may be formed such that the latch mechanism moves when the button is depressed. In FIG. 5, the latch mechanism 17 is shown in the latch position. In this latch position, the latch mechanism is engaged with the frame plate 2. In particular, the latch element 22 is engaged in a notch 23 located on the frame plate. The carriage is latched using a latching element engaged within the notch to limit sliding of the carriage on the frame plate 2. In this latched position, the button 21 is not in a non-pressed state. 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. By selecting such a plastic, the required restoring force can be applied to the biasing element 25 (i.e., providing sufficient force to bias the latch mechanism 17 to the latched position). Forming the biasing element with the carriage body simplifies carriage manufacture and assembly. By not forming the biasing element with the latch mechanism, as described in more detail below, the latch mechanism can be formed from a highly durable material such as metal.

  FIG. 6 is a view of the carriage similar to FIG. 5 with the latch mechanism 17 in the unlatched position. In this non-latched position, the latch mechanism is disengaged from the frame plate 2. Specifically, the latch element is disengaged from the notch 23 in the frame plate. When the latch element is disengaged from the notch, the carriage can slide on the frame plate 2. In the non-latch position, the button 21 is in a non-pressed state. In one embodiment, the carriage body 19 may include a catch 26 that is configured to interact with an edge 27 of the latch mechanism to temporarily hold the latch mechanism in an unlatched position. Using such a catch eliminates the need for the user to manually maintain the button 21 in a non-pressed state while the user slides the carriage 4 from its first carriage position.

  In the unlatched position, the biasing element 25 is squeezed and attempts to bias the latch mechanism 17 to the latched position. It will be appreciated that the catch 26 should be configured so that the biasing element 25 does not climb over the catch 26. 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 in a non-pressed state. When the carriage 4 starts to slide along the frame plate 2, the projection 28 collides with the edge 30 of the recess. This edge is suitably warped so as to apply an upward force to the protrusion, which is sufficient to cooperate with the biasing element 25 to get over the catch 26. Thus, when the carriage 4 slides on the frame plate, the catch no longer holds the latch mechanism 17. 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 of a highly durable material such as metal. It will be appreciated that the latch mechanism can be used multiple times throughout the life of a particular window stay. Thereby, the components, in particular the other components of the window stay 1 as follows:
A latching element 22, which contacts a notch 23 of the frame plate 2, which is preferably made of metal itself;
An edge 27 of the latch mechanism 17 in contact with the catch 26; and a projection 28 in contact with the edge 30 of the recess.
Non-negligible wear and stress can be applied on the components that contact.

  Because the latching element supports the majority of the weight of the window sash via the short arm (especially in awning type windows), the latching element withstands additional wear and stress. By making the latching mechanism from a durable material, these parts will wear but will not wear and deteriorate in a short period of time. This improves the ability of the window stay to operate as intended over the life of the window stay.

  Returning to FIG. 1, a further notch 31 and a further recess 32 in the frame plate 2 are shown. When the carriage 4 slides into the second carriage position in the fully open configuration (as shown in FIG. 3), the latch element engages the further notch 31 and the carriage is latched in the second carriage position. And FIG. 7 shows a cross section of the window stay of FIG. FIG. 7 shows the latch element 22 engaged in a further notch 31.

  From the above description, it can be seen that the frame plate 2 should be configured to cooperate with the carriage 4 so as to fix the carriage on the frame plate while being slidable along the length of the frame plate. right. In one embodiment, the frame plate may be extruded to a profile that matches 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 generally flat elongated member. The frame plate includes holes 11, 13 for receiving suitable fasteners for attachment of the frame plate to a window frame (not shown). The frame plate includes additional holes for connection to a long arm (not shown) by a suitable joint. The frame plate also includes a notch 23, a recess 29, a further notch 31, and a further recess 32 as described above. It will be appreciated that the holes, notches, recesses may be formed in the frame plate by any suitable process, such as, for example, drilling, drilling or stamping.

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

  Frame plate 2 also includes a track portion 36 that extends between first mounting portion 34 and second mounting portion 35. This track portion is connected by a first raised portion 37 to a first mounting portion and by a second raised portion 38 to a second mounting portion. The raised portions 37, 38 are generally angled or perpendicular to the plane of the frame plate and serve to lift the track portion 36 relative to the first mounting portion 34 and the second mounting portion 35. 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. For at least a portion of the length of the track portion 36, the gap extends from one edge 39 of the track portion to the other edge of the track portion (ie, extends across the transverse width of the track portion). Do).

  Track portion 36 provides an area in which the carriage can slide (as described above in connection with FIGS. 1-7). Specifically, the gap is sufficient to accommodate the flange of the carriage, thereby retaining the carriage on the track portion while allowing the carriage to slide along the track portion. The track portion may include an indent 41. The indent may include an additional hole 12 for receiving a suitable fastener for attaching the indent to the frame. Indentation can increase the rigidity of the track portion. It will be seen that the indentation is positioned relative to the center of the transverse width of the track portion such that a sufficient amount of the track portion remains to hold the carriage on the track portion (as indicated by arrow C). . The indent can be positioned so that the carriage does not obstruct the flange as it slides over the indent.

  The first raised portion 37 and the second raised portion 38 can be formed by a stamping process. “Stamping” should be understood to include any type of press forming process. It will be understood by those skilled in the art how the stamping process typically works and need not be described 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 generally flat elongated member to deform the shape of the mold or die. In this example, a first raised portion 37 and a second raised portion 38 are formed by the stamping process, so that the track portion 36 is raised with respect to the first mounting portion 34 and the second mounting portion 35. become. Using the same stamping press, some or all of the indents 41, holes 11, 12, 13, 33, notches 23, 31, and recesses 29, 32 can be formed simultaneously.

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

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

  The second raised portion 38 prevents the carriage 4 from sliding in one direction and coming off the track portion 36. Specifically, the carriage flange 20 cannot slide past the second raised portion. However, the first raised portion may include a notch 43 that defines a shoulder 44 so that the first raised portion does not prevent the carriage 4 from sliding off the track portion. . Specifically, the carriage flange can slide past the first raised portion. That is, at least a portion of the first raised portion has a width transverse to the length of the frame plate, which is less than the width of the track portion transverse to 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 36 and extends entirely into the first portion 34. The notch 43 allows the carriage to slide onto and off the track portion during assembly and disassembly of the window stay 1. In one embodiment, after sliding the carriage 4 onto the track portion (e.g., during the manufacture of a window stay), a rod or stake is suitably inserted into the first portion 34 of the frame plate 2. , A stop can be generated. In this way, when the window stay 1 is installed, the stop portion can constantly prevent the carriage 4 from sliding off the track portion 36 by sliding back through the notch portion 43.

  10a to 10c show the window stay 1 installed in the window 45, and show both the window frame 45 and the window sash 47. It will be appreciated that the window stay can be installed using any suitable type of window frame and window sash that can constitute an awning type or casement window. Further, one or more (usually two or more) window stays can be installed for one particular window stay.

  In FIG. 10a, window 45 and window stay are in the closed position. Since the window stay is blocked by the window sash 47, it cannot be visually recognized. In FIG. 10b, window 45 and window stay 1 are in a partially open position. The carriage 4 is at a 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.

  11 to 20c show a further embodiment of the window stay 1. FIG. This configuration is for a window stay smaller than that of FIGS. However, each of these embodiments can be extended to any desired size of window stay. This second embodiment is entirely the same as the above-described 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 for attaching the frame plate to the window frame and for receiving suitable fasteners for attaching the sash plate to the window sash. Provided on a board.

  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 is in 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. To change the window sash from the partially open position of FIG. 11 to the fully open position of FIG. 13, the carriage 4 can slide along the frame plate 2 from the first carriage position to the second carriage position.

  FIG. 14a is a partial view of the window stay of FIG. 1 to show the carriage 4 in more detail. This carriage has substantially the same configuration as the carriage of FIGS. However, as can be seen from a comparison of FIGS. 4a and 14a, the orientation of the latch mechanism 17 has been 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 that extends along the sides of the carriage 4, as shown in the bottom view of FIG. 14b. The flange 20 effectively wraps the underside of the frame plate 2, thereby maintaining the carriage in a fixed relationship with the frame plate 2 while being able to slide along the length of the frame plate. 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. Thereby, the sliding of the carriage 4 on the frame plate is restricted. When the button 21 is depressed, the latch element 22 is disengaged from the notch 23 so that the carriage can slide on the frame plate.

  FIGS. 15 and 16 are sectional views of the carriage 4. As shown, the protrusion 28 of the latch mechanism 17 is formed with a step 28 'to engage the catch 26 in the position of FIG. Further, in this embodiment, the concave portion 29 in the frame plate 2 is formed by a punching process or a punching process, and the frame plate is deformed while leaving the frame plate in a predetermined position by this operation. To reduce the resistance to movement of the protrusion 28 trying to exit the recess 29. In other words, in this embodiment, the recess 29 does not consist of an opening passing through the frame plate. This configuration can be confirmed, for example, in FIG.

  Carriage 4 may further include an insert 24 similar to FIGS. The latch mechanism includes a biasing element 25 similar to FIGS. However, an additional spring 49 acting on the end face of the latch mechanism 17 may additionally be provided. The spring 49 also has a tendency to act downward (as shown) on the end of the latch mechanism 17 to push the latch mechanism 17 toward the disengaged position shown in FIG.

  FIG. 11 also shows a further notch 31 and a further recess 32 in the frame plate 2, which operate in a manner similar to that of FIGS.

  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 moving quickly upward when the stay and window are in the fully open position and the latch mechanism 17 is released. In the fully open position, the friction element 50 prevents or mitigates movement of the window sash when the latch mechanism is released. However, the user can move the sash while controlling the sash after the latch mechanism is set to the unlatched state. To overcome the frictional force generated by the frictional element, the user need only apply a force to the window sash.

  Friction element 50 also moderates movement of carriage 4 as it approaches the fully open position. This helps limit damage to the mechanism that can be caused by suddenly engaging the additional notch 31 and the additional recess 32 while moving at too fast a speed.

  In the embodiment shown, the friction element 50 merely consists of a ridge which is stamped or pressed into the frame plate 2, which engages a channel 51 formed in the carriage. However, in other embodiments, inserts or additional elements of a high friction material (eg, rubber or a suitable polymer) may be used.

  FIG. 18 shows the frame plate 2 of the window stay of FIG. FIG. 19 is 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, and show cross sections of both the window frame 46 and the window sash 37.

  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.

  Although the above-described window stay is a four-bar type window stay, those skilled in the art can understand how to use a carriage having a latch mechanism and a frame plate in a window stay having another configuration having a sliding carriage. There will be.

  While the invention has been illustrated and described in detail by describing several embodiments of the invention, it is not intended that the scope of the appended claims be limited to the above details or limited in any way. It is not what the applicant intends. Furthermore, the above-described embodiments can be implemented independently, or can be combined if they are compatible. Additional advantages and modifications, including combinations of the above embodiments, will be readily apparent to those skilled in the art. Accordingly, the invention in its broader aspects is not limited to the specific details, representative devices and methods, and the illustrative embodiments shown and described. The foregoing details can be developed without departing from the spirit or scope of applicant's general inventive concept.

DESCRIPTION OF SYMBOLS 1 Window stay 2 Frame plate 3 Sash plate 4 Carriage 5, 6 Connection element 17 Latch mechanism 19 Carriage body 20 Flange 24 Insert 25 Biasing element 34 First mounting portion 35 Second mounting portion 36 Track portion 37 First ridge Portion 38 Second raised portion 50 Friction element

Claims (18)

i. A frame plate configured for mounting to a window frame;
ii. A sash plate configured for attachment to a window sash;
iii. A carriage configured to slide on the frame plate; and
iv. A window stay including a connection element for connecting the carriage to the sash plate,
The carriage is:
a. Carriage body;
b. Engagement with the frame plate at the latch position restricts sliding of the carriage on the frame plate, and disengages from the frame plate at the non-latch position to allow the carriage to move on the frame plate. A latch mechanism to allow sliding; and c. The carriage body and is integrally formed, said latching mechanism configured to subject to the latched position, viewed including the one or more biasing elements,
The frame plate is:
i. A first mounting portion and a second mounting portion configured to mount the frame plate to the window frame;
ii. The first mounting portion and the second mounting portion extending between the first mounting portion and the second mounting portion and separated from the window frame by a gap in the installed window stay; Truck parts lifted against
Including
A first raised portion connects the first mounting portion to the track portion;
A second raised portion connects the second mounting portion to the track portion;
At least a portion of the first raised portion has a width transverse to the length of the frame plate that is less than the width of the track portion transverse to the length of the frame plate.
Window stay.   The window stay according to claim 1, wherein the carriage body is formed of plastic.   The window stay according to claim 1, wherein the latch mechanism is formed of metal. In a first configuration of the window stay, the latch mechanism is in the latch position, the carriage is in a first carriage position on the frame plate,
4. The window stay according to claim 1, wherein in the second configuration of the window stay, the latch mechanism is in the non-latched position, and the carriage is slidable on the frame plate. 5. When the window stay is 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,
5. The window stay according to claim 4, wherein when the window stay is in the second configuration, the sash plate is movable between the partially open position and the fully open position with respect to the frame plate. 6. The closed position corresponds to a state where the plane of the window sash is parallel to the plane of the window frame,
The partially open position corresponds to a state in which the plane of the window sash forms an angle of 10 to 60 with the plane of the window frame,
6. The window stay according to claim 5, wherein the fully open position corresponds to a state where the plane of the window sash forms an angle of 60-110 with the plane of the window frame.   A window stay according to any one of the preceding claims, wherein the carriage includes at least one flange configured to enclose a longitudinal edge of the frame plate.   The window stay according to claim 7, wherein the carriage includes a metal insert.   The window stay according to claim 8, wherein the metal insert extends into the at least one flange. The track portion of claim 1, wherein the track portion is formed by stamping a generally elongated member so that the track portion can be lifted relative to the first mounting portion and the second mounting portion. Window stay. The window stay of claim 1, wherein the gap extends from a first side of the track portion to a second side of the track portion. The window stay of claim 11, wherein the carriage is configured to slide over the track portion.   13. The window stay of claim 12, wherein the carriage includes at least one flange extending along a side of the carriage and at least partially disposed within the gap. The window stay according to claim 1, wherein the track portion includes an indent configured for attachment to the frame plate. 15. The window stay of claim 14, wherein the indent is positioned toward a center of a transverse width of the track portion.   i. A latch mechanism for limiting sliding of the carriage on the frame plate in the latched position, and enabling sliding of the carriage on the frame plate in the unlatched position;
  ii. One or more friction elements arranged to prevent or mitigate sliding of the carriage along the frame plate when the latch mechanism is in the unlatched position.
The window stay according to claim 1, further comprising: In the fully open position, the latch mechanism engages,
  The one or more frictional elements are arranged to prevent or mitigate movement of the carriage from the fully open position when a user unlatches the latching mechanism during use. 16. The window stay according to 16. In use, in the fully open position, the latch mechanism causes the carriage to slide along the frame plate when the force applied to the carriage exceeds the frictional force generated by the frictional element. 18. The window stay according to claim 17, wherein a latched state is configured.

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