JP2015190309A - Window stay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a window stay for improving the conventional problem.SOLUTION: A window stay 1 includes a frame plate 2 constituted for installing to a window frame, a sash plate 3 constituted for installing to a window sash, a carriage 4 constituted so as to slide on the frame plate and connection elements 5 and 6 for connecting the carriage to the sash plate. The carriage includes a carriage body, a latch mechanism 17 for limiting sliding of the carriage on the frame plate by engaging with the frame plate in a latch position and enabling the sliding of the carriage on the frame plate by releasing engagement from the frame plate in a non-latch position and one or a plurality of energization elements integrally formed with the carriage body and constituted so as to energize the latch mechanism to the latch position.

Description

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

  Window stays (also known as window stay hinges or friction stays) are well known in the window industry. 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 attached to the window frame, a sash plate configured to be attached to the window sash, and a plurality of arms pivotally connected between the frame plate and the sash plate. There are many. Depending on the type of window and the type of opening and closing mechanism required, a number of differently configured window stays are provided.

  Some window stays may be provided with a carriage that can slide on the frame plate. One or more of the plurality of arms may be connected to the carriage rather than directly to the frame plate. In this way, the carriage can slide as part of the window opening and closing mechanism.

  For example, U.S. Patent No. 6,057,028, 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 that are pivotally connected between the frame plate and the 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 locking means, and the arm configuration is such that the sash plate moves relative to the frame plate (corresponding to the window opening from the closed position to the first open position). It can be done. In a further operation, the locking means is released so that the carriage can 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 in Patent Document 1 includes a button formed integrally with the protruding portion. The protrusion engages with the frame plate to limit the sliding of the carriage. The protrusion is biased to the locked position by a spring part which is also formed integrally with the button.

  A problem related to the window stay disclosed in Patent Document 1 is that the spring part is made of plastic, and therefore the button and the protrusion (which are integrally formed with the spring part) are also made of plastic. The protrusion is exposed 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 a sliding carriage is that the frame plate 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 an outline suitable for use as a track. For example, a frame plate of a window stay disclosed in Patent Document 1 is an elongated part that is formed by extrusion having a substantially U-shaped outer shape, and a carriage is slid in a slidable configuration within the U-shaped outer shape. Built in.

  The prior art referred to in this specification cannot necessarily be said to form part of the common general knowledge.

British Patent No. 2311324B

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

  In one aspect, the invention provides: 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 carriage sash For window stays, including connecting elements that connect to the plate, the carriage is: carriage body; engages the frame plate in the latched position to limit sliding of the carriage on the frame plate and from the frame plate in the non-latched position One or more latching mechanisms that are disengaged to allow the carriage to slide on the frame plate; integrally formed with the carriage body and configured to bias the latching mechanism to the latched position Includes a biasing element.

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

  Preferably, in the first configuration of the window stay, the latch mechanism is in the latch 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 non-latching position. Yes, the carriage can slide on the frame plate. More preferably, when the window stay has the first configuration, the sash plate can move between the closed position and the partially open position with respect to the frame plate, and when the window stay has the second configuration, the sash plate Can move between a partially open position and a fully open position relative to the frame plate. More preferably, the closed position corresponds to a state in which the plane of the window sash is parallel to the plane of the window frame, and the partially open position is that the plane of the window sash forms an angle of 10 to 60 ° with the plane of the window frame. Corresponding to the state, the fully open position corresponds to a state in which 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 wrap around the 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 provides: 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; For a window stay including a connecting element connected to the sash plate, the frame plate is: a first attachment portion and a second attachment portion configured to attach the frame plate to the window frame; and the first attachment portion and the first attachment portion. A track portion extending between the two attachment portions and lifted relative to the first attachment portion and the second attachment portion to be separated from the window frame by a gap in the installed window stay.

  Preferably, 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.

  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 narrower than the width of the track portion transverse to the length of the frame plate.

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

  Preferably, the carriage is configured to slide over the track portion. More preferably, the carriage includes at least one flange extending along the side of the carriage and at least partially disposed 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 includes an additional connecting element for connecting the frame plate to the sash plate.

  In a further aspect, the invention provides: 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 connecting element that connects to the sash plate; a latch mechanism that limits sliding of the carriage on the frame plate in the latched position and allows sliding of the carriage on the frame plate in the non-latched position; and a latch mechanism A window stay is provided that includes one or more friction elements arranged to prevent or mitigate sliding of the carriage along the frame plate when in a non-latching position.

  Preferably, the latch mechanism engages 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 apply a force to slide the carriage along the frame plate, exceeding the friction force generated by the friction element, with the latch mechanism in an unlatched state.

  It is known that the term “comprise”, “comprises”, “comprising” can be interpreted in an exclusive or comprehensive sense under various jurisdictions. For the purposes of this specification, these terms have a generic meaning unless otherwise indicated, i.e., these terms include listed components whose use is directly mentioned, and in some cases It is to be construed to include 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 the 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 the latch mechanism is in the latch position. FIG. 6 is a partial cross-sectional view of the window stay of FIG. 1 in a state where the latch mechanism is in the non-latching position. FIG. 7 is a cross-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 a bottom orthogonal projection of the window stay of FIG. FIG. 10a is a partial isometric view of a window including a window stay in a 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 in a partially open position according to a further embodiment. FIG. 12 is an isometric view of the window stay of FIG. 11 in the closed position. FIG. 13 is an isometric view of the window stay of FIG. 11 in the 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 in the latch position. 16 is a partial cross-sectional view of the window stay of FIG. 11 in a state where the latch mechanism is in the non-latching position. FIG. 17 is a cross-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 a bottom orthogonal projection of the window stay of FIG. FIG. 20a is a partial isometric view of a window including a window stay in a 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 an embodiment. The window stay 1 includes a frame plate 2 for installation on a window frame and a sash plate 3 for installation 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 is used with any type of window frame and window sash suitable for constructing an awning type or casement type window. Those skilled in the art will understand how to install.

  The carriage 4 is configured to slide on the frame plate 2. A connecting element in the form of a short arm 5 and joints 6, 7 connects the carriage to the sash plate. Additional connecting elements in the form of long arms 8 and joints 9 and 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 riveting joint known in the present application. Due to the arrangement of the connecting elements 5, 6 and the joints 6, 7, 9, 10, relative movement between the frame plate 2 and the sash plate 3 is possible. As will be described in more detail below, this relative movement can change the installed window from the closed position to the open position. In order to attach the frame plate to the window frame and to receive a suitable fastener for attaching the sash plate to the window sash, the one or more holes 11, 12, 13, 14, 15 are formed in the frame plate and sash. Provide on the plate.

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

  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 the comparison between FIG. 1 and FIG. 2, how the relative movement between the frame plate 2 and the sash plate 3 is made possible by the arrangement of the connecting elements 5, 6 and the joints 6, 7, 9, 10. Can understand. Thus, it can be further understood that the 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 the original position). It can further be seen that the carriage 4 is in the same first carriage position with respect to the frame plate with respect to both the partially open position of FIG. 1 and 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 schematically indicated by a dotted arc 18 and is approximately 71 °.

  From the comparison between FIG. 1 and FIG. 3, 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, joints 6, 7, 9, 10 and the carriage 4. I can understand what will happen. Thus, it can be further understood 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 the original position). In order to change the window sash from the partially opened position of FIG. 1 to the fully opened position, the carriage 4 is slid along the frame plate 2 from the first carriage position to the second carriage position.

  FIG. 4 a 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 that extends along the side of the carriage 4 as shown in the bottom view of FIG. 4b. The flange 20 effectively wraps the lower side of the frame plate 2 so that the carriage can be secured to the frame plate 2 in a state that allows the carriage to slide along the length of the frame plate (as indicated by arrow A). To 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, and therefore 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 in the frame plate 2. Thereby, the sliding of the carriage 4 on the frame plate is limited. When the button 21 is in the non-pressed state, 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 the partially open state to the fully open state, where the user puts the button 21 in a non-pressed state, puts the latch mechanism in a non-latched state, and frees 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 main body 19 wraps the frame plate 2 with a flange 20 illustrated on the lower side of 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 an insert may be made of metal, which can add additional 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 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 accommodate a latch mechanism. Both the button and the latch element may be formed such that the latch mechanism moves when the button is in a non-pressed state. In FIG. 5, the latch mechanism 17 is shown in the latched position. In this latch position, the latch mechanism is engaged with the frame plate 2. Specifically, the latch element 22 is engaged in a notch 23 arranged in the frame plate. The carriage is latched using the latch element engaged in the notch, and the sliding of the carriage on the frame plate 2 is restricted. 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 made of plastic. By selecting such plastic, the necessary restoring force can be applied to the biasing element 25 (ie, sufficient force can be provided to bias the latch mechanism 17 to the latched position). Forming the biasing element with the carriage body simplifies the manufacture and assembly of the carriage. By not forming the biasing element with the latch mechanism, as will be described in more detail below, the latch mechanism can be formed from a highly durable material such as metal.

  FIG. 6 is an illustration of a carriage similar to FIG. 5 with the latch mechanism 17 in the unlatched position. In this non-latching 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-latching position, the button 21 is not pressed. In one embodiment, the carriage body 19 may include a catch 26 that is configured to interact with the latch mechanism edge 27 to temporarily hold the latch mechanism in an unlatched position. By using such a catch, it is not necessary for the user to manually maintain the button 21 in the non-pressed state while sliding the carriage 4 from the 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 go over the catch 26. The latch mechanism includes a protrusion 28 that extends 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 protrusion 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 and overcome the catch 26. Therefore, when the carriage 4 slides on the frame plate, the catch no longer holds the latch mechanism 17. When the latch element 22 meets the notch, the latch mechanism returns to the latch 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 many times throughout the life of a particular window stay. Thereby, the components, in particular other parts of the window stay 1 as follows:
A latching element 22 in contact with the notch 23 of the frame plate 2, which itself is preferably made of metal;
An edge 27 of the latch mechanism 17 in contact with the catch 26; and a protrusion 28 in contact with the edge 30 of the recess.
Non-negligible wear and stress can be applied on the components in contact with.

  Since 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 further wear and stress. By making the latch mechanism from a highly 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 to the second carriage position in the fully open configuration (as shown in FIG. 3), the latch element engages the further notch 31 and latches the carriage 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 is understood 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 an outer shape that fits a particular geometric shape 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 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, a further recess 32 as 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, drilling, drilling or stamping.

  The frame plate 2 includes a first attachment portion 34 and a second attachment portion 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 attachment part 34 comprises a hole 11 and the second attachment part comprises a hole 13.

  The frame plate 2 also includes a track portion 36 that extends between a first attachment portion 34 and a second attachment portion 35. The track portion is connected to the first mounting portion by a first raised portion 37 and is connected to the second mounting portion by a second raised portion 38. 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, across the transverse width of the track portion). To do).

  The 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 carriage flange, thereby holding the carriage on the track portion while being slidable along the track portion. The track portion may include an indent 41. The indent may include a further hole 12 for receiving a suitable fastener for attaching the indent to the frame plate. Indentation can increase the rigidity of the track portion. It will be appreciated that the indent is positioned relative to the center of the transverse width of the track portion (as indicated by arrow C) so that a sufficient amount of track portion remains to hold the carriage on the track portion. . The indent can be positioned so as not to obstruct the flange as the carriage slides over the indent.

  The first raised portion 37 and the second raised portion 38 can be formed by a stamping process. “Stamping” is to be understood as including any pressing type forming process. A person skilled in the art understands how stamping works normally and does not need to be described in detail. Briefly, stamping involves placing a generally flat elongated member in a stamping press with a suitable mold or die. The stamping press then applies sufficient pressure to the generally flat elongated member to deform the mold or die shape. In this example, the stamping process forms a first raised portion 37 and a second raised portion 38 so that the track portion 36 is lifted relative to the first and second mounting portions 34 and 35. become. Using this same punching press, some or all of the indent 41, the holes 11, 12, 13, 33, the notches 23, 31, and the 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 (that is, in the fully opened position). The carriage 4 is latched at the second carriage position. This figure illustrates the manner in which the flange 20 wraps around 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 can prevent 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 flange of the carriage 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 narrower 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 on 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 the window stay), it is appropriate to insert a rod or strike a pile into the first portion 34 of the frame plate 2. A stop can be generated. Thus, when installing the window stay 1, it is possible to constantly prevent the carriage 4 from sliding off the track portion 36 by sliding so as to return through the notch 43 by the stop portion.

  FIGS. 10 a to 10 c show the window stay 1 installed on the window 45 and show both portions of 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 type window. Furthermore, one or a plurality of (typically two or more) window stays can be installed for one specific window stay.

  In FIG. 10a, the window 45 and the 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, the window 45 and the window stay 1 are in the partially open position. The carriage 4 is at the first carriage position with respect to the frame plate 2. In FIG. 10c, the window 45 and the window stay 1 are in the fully open position. The carriage 4 is at the second carriage position with respect to the frame plate 2.

  FIGS. 11 to 20 c show a further embodiment of the window stay 1. This configuration relates to a window stay that is smaller than that of FIGS. However, each of these embodiments can be extended to any desired size window stay. This second embodiment is generally the same as the first embodiment described above.

  FIG. 11 shows the window stay 1 including the frame plate 2 and the sash plate 3. The carriage 4 is configured to slide on the frame plate 2. A connecting element in the form of a short arm 5 and joints 6, 7 connects the carriage to the sash plate. Additional connecting elements in the form of long arms 8 and joints 9 and 10 connect the frame plate to the sash plate. In order to attach the frame plate to the window frame and to receive a suitable fastener for attaching the sash plate to the window sash, the one or more holes 11, 12, 13, 14, 15 are formed in the frame plate and sash. Provide on the plate.

  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. In order 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 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 that extends along the side of the carriage 4 as shown in the bottom view of FIG. The flange 20 effectively wraps the lower side of the frame plate 2, thereby maintaining the carriage in a fixed relationship with the frame plate 2 while remaining slidable along the length of the frame plate. In this embodiment, the flange can be provided by an insert 24 and a return 20a 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 in the frame plate 2. Thereby, the sliding of the carriage 4 on the frame plate is limited. When the button 21 is in the non-pressed state, the latch element 22 is disengaged from the notch 23, so that the carriage can slide on the frame plate.

  15 and 16 are sectional views of the carriage 4. As illustrated, the protrusion 28 of the latch mechanism 17 is formed to have a step 28 'so as to engage with the catch 26 at the position of FIG. Furthermore, in this embodiment, the concave portion 29 in the frame plate 2 is formed by a punching operation or a punching operation. By this operation, the frame plate is left in a predetermined position, while the frame plate is deformed to form an inclined structure in the concave portion 29. The resistance to the movement of the protruding portion 28 which is provided and tries to come out from the concave portion 29 is reduced. In other words, in this embodiment, the recess 29 does not consist of an opening that passes through the frame plate. This configuration can also be confirmed in FIG. 18, for example.

  The carriage 4 may further include an insert 24 similar to FIGS. 1-10c. The latching mechanism includes a biasing element 25 similar to that of FIGS. However, an additional spring 49 acting on the end face of the latch mechanism 17 may be additionally provided. This spring 49 also tends to push the latch mechanism 17 toward the disengaged position shown in FIG. 15 by acting downward (as shown) against the end of the latch mechanism 17.

  FIG. 11 also shows a further notch 31 and a further recess 32 in the frame plate 2, which operate in the same way as 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 rapidly 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 alleviates 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 brought into the non-latching state. To overcome the frictional force generated by the friction element, the user simply applies a force to the window sash.

  The friction element 50 also relaxes the movement of the carriage 4 as it approaches the fully open position. This helps limit the damage to the mechanism that can be caused by sudden engagement with the further notches 31 and further recesses 32 while moving at a premature speed.

  In the illustrated embodiment, the friction element 50 simply consists of ridges that are driven or pressed into the frame plate 2 and engage a channel 51 formed in the carriage. However, in other embodiments, inserts or additional elements of 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.

  FIGS. 20 a to 20 c 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 4-bar type window stay, it will be understood by those skilled in the art how to use the carriage and frame plate having the latch mechanism in the window stay of other configurations having the sliding carriage. I will.

  Although the invention has been illustrated and described in detail by way of description of several embodiments of the invention, it should be understood that it is not intended to limit the scope of the appended claims in any way, or to limit them in any way. Not intended by the applicant. Furthermore, the above-described embodiments can be implemented independently or 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. The invention in its broader aspects is therefore not limited to the specific details, representative apparatus and method, and illustrative examples shown and described. Details described above may be developed without departing from the spirit or scope of applicants' general inventive concept.

DESCRIPTION OF SYMBOLS 1 Window stay 2 Frame board 3 Sash board 4 Carriage 5, 6 Connection element 17 Latch mechanism 19 Carriage main body 20 Flange 24 Insert 25 Energizing element 34 First attachment part 35 Second attachment part 36 Track part 37 First bulge Portion 38 second raised portion 50 friction element

Claims (29)

i. Frame plates configured for attachment to window frames;
ii. Sash plates configured for installation on window sashes;
iii. A carriage configured to slide on the frame plate; and
iv. A window stay including a connecting element for connecting the carriage to the sash plate,
The carriage is:
a. Carriage body;
b. Engage with the frame plate at the latched position to limit sliding of the carriage on the frame plate, and disengage from the frame plate at the non-latched position to disengage the carriage on the frame plate. A latching mechanism that allows sliding; and c. A window stay including one or more biasing elements integrally formed with the carriage body and configured to bias the latch mechanism to the latched position.   The window stay according to claim 1, wherein the carriage body is made of plastic.   The window stay according to claim 2, wherein the latch mechanism is made of metal. In the first configuration of the window stay, the latch mechanism is in the latch position, and the carriage is in a first carriage position on the frame plate,
The window stay according to any one of claims 1 to 3, wherein in the second configuration of the window stay, the latch mechanism is in the non-latching position, and the carriage can slide on the frame plate. When the window stay is in the first configuration, the sash plate can move 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 has the second configuration, the sash plate can move between the partially opened position and the fully opened position with respect to the frame plate. 6. The closed position corresponds to a state in which a plane of the window sash is parallel to a plane of the window frame;
The partial open position corresponds to a state in which the plane of the window sash forms an angle of 10 to 60 degrees with the plane of the window frame,
The window stay according to claim 5, wherein the fully open position corresponds to a state in which the plane of the window sash forms an angle of 60 to 110 degrees with the plane of the window frame.   The window stay according to claim 1, wherein the carriage includes at least one flange configured to wrap around a longitudinal edge of the frame plate.   The window stay according to claim 1, wherein the carriage includes a metal insert. The carriage includes a metal insert;
The window stay of claim 7, wherein the metal insert extends into the at least one flange.   The window stay according to any one of claims 1 to 9, further comprising an additional connecting element that connects the frame plate to the sash plate. i. Frame plates configured for attachment to window frames;
ii. Sash plates configured for installation on window sashes;
iii. A carriage configured to slide on the frame plate; and
iv. A window stay including a connecting element for connecting the carriage to the sash plate,
The frame plate is:
d. A first attachment portion and a second attachment portion configured to attach the frame plate to the window frame; and e. The first attachment portion and the second attachment portion extend between the first attachment portion and the second attachment portion, and are separated from the window frame by a gap in the installed window stay. A window stay, including the track part, lifted against.   12. The track portion is formed by stamping a generally elongated member so that the track portion is lifted relative to the first attachment portion and the second attachment portion. Window stay.   The window stay according to claim 11 or 12, wherein the frame plate is made of stainless steel.   The window stay according to any one of claims 11 to 13, wherein the frame plate is formed of an approximately elongated member.   The window stay of claim 11, wherein the first raised portion connects the first attachment portion to the track portion.   The window stay of claim 15, wherein a second raised portion connects the second attachment 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 narrower than the width of the track portion transverse to the length of the frame plate. The window stay according to 15 or 16.   The window stay of claim 11, 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.   20. A window stay according to claim 19, 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 of claim 11, wherein the track portion includes an indent configured for attachment to the frame plate.   The window stay according to claim 21, wherein the indent is positioned toward a center of a transverse width of the track portion.   The window stay according to claim 11, further comprising an additional connecting element for connecting the frame plate to the sash plate. i. Frame plates configured for attachment to window frames;
ii. Sash plates configured for installation on window sashes;
iii. A carriage configured to slide on the frame plate;
iv. A connecting element connecting the carriage to the sash plate;
v. A latch mechanism that restricts sliding of the carriage on the frame plate in the latched position and enables sliding of the carriage on the frame plate in the non-latched position;
vi. A window stay comprising one or more friction elements arranged to prevent or mitigate sliding of the carriage along the frame plate when the latching mechanism is in the non-latching position. The latch mechanism engages in the fully open position;
The one or more friction elements are arranged to prevent or mitigate movement of the carriage from the fully open position when a user unlatches the latch mechanism during use. The window stay according to 24.   In use, in the fully open position, the user can apply a force to slide the carriage along the frame plate that exceeds the friction force generated by the friction element with the latch mechanism in the unlatched state. The window stay according to claim 25.   A window stay substantially as herein described with reference to Figures 1-9 of the accompanying drawings.   A window stay substantially as herein described with reference to FIGS. 11-19 of the accompanying drawings.   A window stay substantially as herein described with reference to Figures 1 to 10c or Figures 11 to 20c of the accompanying drawings.

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