JP2016532027A - Windstays and windstay components - Google Patents

Abstract

The window stay includes a rivet friction pivot joint between the first element and the second element. The rivet passes through the openings in the first and second elements. The first washer is located between the inside of the first element and the inside of the second element. The second washer is located between the rivet head and the outside of the second element. The first washer may be present in a recess formed at least partially in the first element. The second washer may be present in a recessed area formed at least partially on the back side of the rivet head. The opening in the second element may form a cylindrical surface that holds against the rivet shaft without using a washer between the cylindrical surface and the rivet shaft.

Description

  The present invention relates to a windstay and a windstay component.

  Windstays are used in residential and commercial environments to secure the window sash to the window frame while allowing the window sash to be opened. Known wind stays use friction joints between the wind stay elements to hold the weight of the sash and contribute to the window sash sealing against the window frame when the window is closed. Yes. Typical integrated friction window stay functions include supporting the weight of the window sash, holding the window sash in the desired open position, and providing an appropriate weather seal to prevent water and air ingress. (Also known as seal compression, stay pull-in resistance or weather resistance) and sufficient ventilation if desired.

  The window stay may be a 4-bar stay having a general configuration shown in FIGS. This stay includes a frame plate portion 1 for attachment to a window frame and a sash plate portion 2 for attachment to a window sash. The two arm portions 3 and 4 are configured such that the frame plate portion and the sash plate portion are joined and turned to open and close the window.

  The 4-bar stay is the most common form of integrated friction window stay, but there are also 5-bar and 6-bar stays.

  A typical stay is provided with a friction joint at pivot points 5, 6, 7 and 8. By joint design, the stay plate part (ie frame plate part or sash plate part) and the stay arm part are tightened together (also known as “clinching”) and a friction force is created between them, The required integral joint friction occurs. Most friction stays use rivets as joint fasteners and washers to control wear and friction within the joint. The frictional force at the joint is extremely important for stay performance. This allows the window stay to support the weight of the window sash at the desired open position while meeting operating force requirements (i.e., the allowable force required to open and close the window). It is also useful for forming a stay shape that seals the window sash against the window frame when closed.

  The existing joint design is shown in FIG. 4 (cross-sectional view of the friction joint). The arm portion 10 is attached to the plate portion 11 with the rivet 12 in a state where the arm portion 10 is tightened between the washers 13 and 14.

  The arm portion 10 is countersunk on both sides, and is provided with a cavity for fitting the washers 13 and 14. Counterbore processing of the arm portion 10 is a further manufacturing process after the arm portion is created. Counterbore is usually a machining process that is expensive, time consuming and must be accurate in diameter, depth and radius. The recesses 15 and 16 that are countersunk have dimensions that can be stopped so that the washer does not protrude when tightened. This washer protrusion is a common characteristic of compression washers and must be prevented to maintain the integrity of the joint. The washers 13 and 14 are usually straight on the sides and uniform in thickness, and when two are used, they usually have the same diameter and thickness.

  Further, in the existing joint design, a part of the washer 13 (pushed into a predetermined place or processed washer) is positioned between the rivet shaft 17 and the arm portion 10 to form a holding surface. It is also necessary. The washer 13 may be forcibly provided around the curved surface as shown, but is generally the same as the washer 14 before assembly. A washer 13 (typically nylon or similar material) separates the two metal surfaces of the rivet and arm portion (typically aluminum). Over time, the washer wears, creating a space within the joint.

  In the design of houses, the recent trend is to provide large windows. Due to changes in the Building Standards Law, the use of double glazing has increased the thermal efficiency of buildings. These two factors led to the installation of heavier and larger windows. Increasing size and weight increases the load on the integral friction window stay currently used to support and hold open windows.

  This ensures that customer requirements for opening and closing windows with the handle force are met, and that it is necessary to meet national or international standards to maintain the sash in place, even in the case of wind with operating force and specified strength. New difficulties arise about satisfaction. As the weight and size of the window sash increases, the friction and load holding capacity required to maintain the stay function increases.

  Reference to any prior art in this specification is not an admission that such prior art constitutes part of ordinary general knowledge.

  It is an object of the present invention to provide an improved friction pivot joint and / or an improved window stay, or at least to provide a useful choice.

According to one aspect of the present invention, a window stay having a rivet friction pivot joint, the first stay having an inner side, an outer side, a first opening, and a recess surrounding the opening on the inner side. A rivet having one element; a second element having an inner side, an outer side and a second opening; a head, a shaft, and a tail, the rivet head meshing with the outer side of the second element The back of the rivet head is concave, the rivet shaft passes through the first and second openings, the rivet tail is tightened and meshed with the outside of the first element; and the inside of the first element; A first washer located between the rivet head and the outside of the second element; and a first washer located between the rivet head and the outside of the second element The second washer, at least A second washer that is partly located in the concave area behind the rivet head, and a friction pivot joint is provided between the first element and the second element by the rivet, the first washer and the second washer. Provided,
A window stay is provided.

  Preferably, the recess serves to limit the protrusion of the first washer.

  Preferably, a concave area on the back side of the rivet head serves to limit the protrusion of the second washer.

  Also, the second opening is one or more that leans against the rivet shaft over at least substantially the entire thickness of the second element without using a washer between the one or more holding surfaces and the rivet shaft. The holding surface is defined.

  Furthermore, the one or more holding surfaces rest against the rivet shaft over the entire thickness of the second element.

  Preferably, the second opening is a planar opening that defines a single cylindrical retaining surface. Preferably, the second opening is a flat opening without a counterbore or a countersink.

  Preferably, the windstay has a coating on the second element, and the coating covers one or more holding surfaces. Preferably, the coating film is a powder coating film.

  Preferably, the rivet is a semi-tubular rivet

  Preferably, the rivet remains fixed relative to the first element when the second element rotates relative to the first element.

  Preferably, the first opening is non-circular and the tightened rivet tail meshes with the first opening to prevent the rivet from rotating relative to the first element. Preferably, the first opening has a polygonal shape.

  Preferably, the first washer has a rounded cross section. Preferably, the first washer has a substantially oval cross section.

  Preferably, the second washer has a rounded cross section. Preferably, the second washer has a substantially oval cross section.

  Preferably, the first element is a frame plate or a sash plate.

  Preferably, the second element is an arm.

  Preferably, the first washer is thicker than the second washer in a dimension parallel to the rivet shaft.

  According to a second aspect of the invention, a windstay having a rivet friction pivot joint, a first element having an inner side, an outer side and a first opening; an inner side, an outer side and a second opening A rivet having a head, a shaft, and a tail, wherein the rivet shaft extends through the first and second openings, and the rivet head and tail are respectively of the second and first elements. A rivet meshing with the outside; a first washer located between the inside of the first element and the inside of the second element; located between the rivet head and the outside of the second element A second washer, wherein the second opening is at least substantially the entire thickness of the second element without the use of a washer between the one or more retaining surfaces and the rivet shaft. Against A window stay is provided that defines one or more retaining surfaces for latching and holding a friction pivot joint between the first element and the second element by the rivet, the first washer and the second washer. .

  Preferably, the one or more holding surfaces rest against the rivet shaft over the entire thickness of the second element.

  Preferably, the second opening is a planar opening that defines a single cylindrical retaining surface. Preferably, the second opening is a flat opening without a spot facing, a countersink, or the like.

  Preferably, the window stay has a coating on the second element, the coating covering one or more holding surfaces. Preferably, the coating film is a powder coating film.

  Preferably, the first element has a recess on the inside that surrounds the first opening, and the first washer is at least partially within the recess.

  Preferably, the back side of the rivet head is concave and the second washer is at least partially in a concave area on the back side of the rivet head.

  Preferably, the recess serves to limit the protrusion of the first washer.

  Preferably, the recessed area on the back side of the rivet head serves to limit the protrusion of the second washer.

  Preferably, the rivet is a semi-tubular rivet.

  Preferably, the rivet remains fixed relative to the first element when the second element rotates relative to the first element.

  Preferably, the first opening is non-circular and the tightened rivet tail meshes with the first opening to prevent the rivet from rotating relative to the first element. The first opening has a polygonal shape.

  Preferably, the first washer has a rounded cross section. Preferably, the first washer has a substantially oval cross section.

  Preferably, the second washer has a rounded cross section. Preferably, the second washer has a substantially oval cross section.

  Preferably, the first washer is thicker than the second washer in a dimension parallel to the rivet shaft.

According to a further aspect of the present invention, a window stay having a rivet friction pivot joint, comprising: a first element having an inner side, an outer side, and a first opening; an inner side, an outer side, and a second opening. A rivet having a head, a shaft, and a tail, wherein the rivet shaft extends through the first and second openings, and the rivet head and tail are outside the second and first elements, respectively. A meshed rivet; a first washer located between the inside of the first element and the inside of the second element; a second located between the rivet head and the outside of the second element A first washer that is thicker than the second washer in a dimension parallel to the rivet shaft; the first element and the second element by the rivet, the first washer and the second washer. Friction pivot joint is provided between the,
A window stay is provided.

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

1 shows a prior art 4 bar window stay in an open position. It is the figure which looked at the stay shown in FIG. 1 from the other side. The closed position of the stay shown in FIG. 1 is shown. 1 is a cross-sectional view of a prior art friction joint. 1 is a cross-sectional view of a friction joint according to one embodiment. FIG. 6 is a diagram showing in more detail the arm portion and rivet of the stay of the friction joint of FIG. 6 is a rivet before tightening of the friction joint of FIG. It is sectional drawing of a part of rivet head. It is a plate part in the rivet joint of FIG. The first washer is shown. Fig. 4 shows a further embodiment of the first washer. A second washer is shown. Fig. 5 is a further embodiment of the second washer. Fig. 6 shows a four bar window stay incorporating the friction joint of Fig. 5 in an open position. FIG. 13 shows the stay of FIG. 12 in the closed position. FIG. 13 is a side view showing the stay of FIG. 12 in a closed position.

FIG. 5 is a cross-sectional view of a friction joint 100 according to one embodiment.
The friction joint joins the arm portion 101 to the plate portion (sash plate portion or frame plate portion) 102. By the joint, the arm portion turns around the shaft 103. The joint is substantially constituted by a rivet 104 that meshes with an opening in the arm portion 101 and the plate portion 102, the first washer 105 and the second washer 106.

  The rivet 104 has a head 107, a shaft 108 and a tail 109. The head 107 is located on the first side of the friction joint, and the tail 109 is fastened to the other side of the friction joint (also referred to as “fixed”). As shown in FIG. 5, the rivet tail portion 109 may be substantially tubular and may be engaged with the plate portion 102 by tightening the tail portion outward. The rivet 104 may have a solid shaft and a tubular tail (sometimes referred to as a “semi-tubular” rivet). According to the illustrated embodiment, the tail 109 is secured directly on the plate portion 102. The opening 110 in the plate portion 102 may be circular, but according to some embodiments, it may be non-circular, polygonal or irregularly shaped, the tail 109 meshes with the opening 110 and the rivet 104 faces the plate portion 102. To prevent it from rotating. The tail 109 is deformed with respect to the side surface of the opening during tightening.

  The rivet head 107 meshes with the outer side or the surface 112 of the arm part 101, but is separated from it by the second washer 106. As shown in FIGS. 5, 7, and 8, the back side or inside 113 of the rivet head 107 is generally concave. As a result, a region is formed between the arm portion 101 and the rivet head 104 where the rivet head 104 is generally narrower than the inside where the rivet head 104 is closer to the rivet shank 108. This shape helps to prevent the second washer 106 from protruding outward (ie away from the rivet shank 108).

  The plate portion 102 is machined, pressed or stamped to form a recess or counterbore 115 on its inner surface 116. As a result, a generally narrower region is formed between the arm portion 101 and the plate portion 102 in the inside closer to the rivet shank 108 than in the outside. This shape helps to prevent the first washer 105 from protruding outward (ie, away from the rivet shank 108). Further, the plate portion 102 is molded on its outer surface to provide a recess 117, and the tightening rivet tail 119 is positioned below the outer surface 118 of the plate portion 102.

  The cylindrical wall of the opening in the arm part 101 forms a cylindrical holding surface 120. The holding surface 120 rides on the rivet shaft 108. Unlike the previous joint, a washer is not provided between the arm portion 101 and the rivet shaft 108. Prior to assembly, a certain amount of wear resistance is imparted by applying a powder coating layer to the arm portion. As shown in FIG. 6, the holding surface 120 is formed by covering the entire arm portion 101 including the inside of the opening with a powder coating film 121. The polymer powder coating imparts abrasion resistance, which is expected to provide sufficient stay life in this area.

  Furthermore, the cylindrical holding surface 120 preferably extends to the full thickness of the arm portion 101. As shown in FIG. 4, the front stay generally uses an opening machined in the arm portion 101 (for example, having a counterbore or the like), and only the thickness portion of the arm portion is attached to the rivet shaft 108. Holds against it. In contrast, FIGS. 5 and 6 have a planar opening without a counterbore or other configuration and provide a cylindrical retaining surface 120 with the full width of the arm. This configuration is significantly less expensive to manufacture, but is also important for friction joints. The degree of the holding surface 120 and the proximity to the rivet shaft (i.e., no washer) provide excellent resistance to pivot joint torsion. In other words, with this arrangement, the plane of the arm portion 101 is kept lateral to the rivet 104 and the shaft 103. Furthermore, there is no washer that wears away with the life of the stay. This means that the resistance to torsion is maintained and the joint is less likely to loosen.

  The arrangement shown in FIG. 5 is preferable because it is simple and easy to manufacture. However, according to other embodiments, a stepped rivet surface may be used to define a plurality of retaining surfaces. In this case, the two or more holding surfaces preferably extend together over substantially the entire width of the arm portion 101.

  FIG. 9 is a cross-sectional view of the plate portion 102 showing the opening 110, the inner depression 115 and the outer depression 117.

  FIG. 10 shows the first washer 105, and shows a cross section by cutting away a part of the washer. FIG. 11 shows the second washer 106 and shows a cross-section with a portion of the washer cut away. In each case, the physical washer constitutes a complete ring.

  FIGS. 10 and 11 show rounded cross sections that the first and second washers may have on at least their side edges 125. The washer shown at the inner edge 126 is also rounded. Preferably, however, the washer has a substantially oval or elliptical shape (as shown in FIGS. 10 and 11) rather than a circular cross section.

  This shape not only provides the necessary separation of the rivet head, arm portion and plate portion, but also helps the washer stick out. Upon compression at the assembly joint, the washer will deform as shown in FIG. However, there is a tendency for the protrusion to be less than a washer having a square side. However, in many applications, square or rectangular cross-section washers such as those shown in FIGS. 10A and 11A may be preferred.

  The thicker the washer, the greater the friction at the joint. The washer material is slightly resilient and tends to push outward against the force applied by the rivets that hold the joints together. The thicker the washer, the greater the friction and the less the change in friction over time due to wear. This is because the wear when the washer is thick has a smaller% thickness loss than in the thinner washer. Further, when the rivet is tightened, the plate portion may be slightly deformed in the region surrounding the opening due to the tightening force. This deformation can be absorbed more easily as the washer is thicker, and the deformation does not affect the overall performance of the joint. Furthermore, it is desirable that the thickness of the washer be greater at that location, since it is absorbed to a greater extent in the washer closer to the rivet tail. For all these reasons, the Applicant's joint is preferably provided with two washers of different thicknesses, with the thicker washer preferably located on the rivet tail side of the joint, ie the arm part and the plate part. The thin washer is preferably located between the rivet heads.

  12-14 show four bar stays incorporating a four rivet friction pivot joint 100. However, other types of window stays use similar rivet joints, and the present invention is not limited to 4-bar stays. For example, 5 and 6 bar stays are also known.

  While the invention has been illustrated by describing embodiments and described in detail, the invention is not limited or limited by such details to the appended claims. Additional advantages and modifications will be readily apparent to those skilled in the art. Thus, in a broader aspect, the invention is not limited to the specific details, representative apparatus and methods, illustrations and illustrated examples. Accordingly, departures may be made from such details without departing from the spirit or scope of applicants' general inventive concept.

Claims (42)

A window stay having a rivet friction pivot joint,
a. A first element having an inner side, an outer side, a first opening, and a recess surrounding the opening on the inner side;
b. A second element having an inner side, an outer side, and a second opening;
c. A rivet having a head, a shaft and a tail,
i) the rivet head meshes with the outside of the second element;
ii) the back side of the rivet head is concave;
iii) the rivet shaft passes through the first and second openings;
iv) the rivet tail is tightened and meshed with the outside of the first element;
With rivets;
d. A first washer located between the inside of the first element and the inside of the second element, and a first washer located at least partially within the recess;
e. A second washer located between the rivet head and the outside of the second element, the second washer present at least partially in a concave area on the back side of the rivet head,
A friction pivot joint is provided between the first element and the second element by the rivet, the first washer and the second washer.
Wind stay.   The window stay according to claim 1, wherein the recess serves to limit protrusion of the first washer.   A window stay according to any of the preceding claims, wherein the concave area on the back side of the rivet head serves to limit the protrusion of the second washer.   The second opening rests against the rivet shaft over at least substantially the entire thickness of the second element without using a washer between the retaining surface (s) and the rivet shaft. A window stay according to any preceding claim, defining one or more retaining surfaces to be retained.   The window stay according to claim 4, wherein the one or more holding surfaces lean against the rivet shaft over the entire thickness of the second element.   The window stay according to claim 4 or 5, wherein the second opening is a planar opening that defines a single cylindrical holding surface. The window stay according to any one of claims 4 to 6, wherein the second opening is a flat opening without a counterbore or a countersink.   The window stay according to any one of claims 4 to 7, wherein the window stay has a coating film on the second element, and the coating film covers the one or more holding surfaces.   The window stay according to claim 8, wherein the coating film is a powder coating film.   The window stay according to any one of the preceding claims, wherein the rivet is a semi-tubular rivet.   The window stay according to any of the preceding claims, wherein the rivet remains fixed relative to the first element when the second element rotates relative to the first element.   The window stay according to any one of the preceding claims, wherein the tightened rivet tail meshes with the first opening to prevent the rivet from rotating relative to the first element.   The window stay according to claim 12, wherein the first opening has a non-circular shape.   The window stay according to claim 13, wherein the first opening has a polygonal shape.   The window stay according to any one of the preceding claims, wherein the first washer has a rounded cross section.   The window stay according to any one of the preceding claims, wherein the first washer has a substantially oval cross section.   The window stay according to any one of the preceding claims, wherein the second washer has a rounded cross section.   The window stay according to any one of the preceding claims, wherein the second washer has a substantially oval cross section.   The window stay according to claim 1, wherein the first element is a frame plate or a sash plate.   The window stay according to any one of the preceding claims, wherein the second element is an arm.   The window stay according to any one of the preceding claims, wherein the first washer is thicker than the second washer in a dimension parallel to the rivet shaft. A window stay having a rivet friction pivot joint,
a. A first element having an inner side, an outer side, and a first opening;
b. A second element having an inner side, an outer side, and a second opening;
c. A rivet having a head, a shaft, and a tail, wherein the rivet shaft passes through the first and second openings, and the rivet head and tail engage with the outside of the second and first elements, respectively. With rivets;
d. A first washer located between the inside of the first element and the inside of the second element;
e. A second washer located between the rivet head and the outside of the second element;
The second opening rests against the rivet shaft at least substantially over the entire thickness of the second element without the use of a washer between the holding surface (s) and the rivet shaft. Defining one or more holding surfaces to hold;
A friction pivot joint is provided between the first element and the second element by the rivet, the first washer and the second washer.
Wind stay.   23. A window stay according to claim 22, wherein the one or more retaining surfaces rest against the rivet shaft over the entire thickness of the second element.   24. A window stay according to claim 22 or 23, wherein the second opening is a planar opening defining a single cylindrical retaining surface.   The window stay according to claim 22, 23, or 24, wherein the second opening is a flat opening without a counterbore or a countersink.   26. A window stay according to any one of claims 22 to 25, having a coating on the second element, the coating covering the one or more holding surfaces.   The window stay according to claim 26, wherein the coating film is a powder coating film.   28. The first element according to any one of claims 22 to 27, wherein the first element has a recess on the inside surrounding the first opening, and the first washer is at least partially within the recess. Windstay.   29. The backside of the rivet head is concave, and the second washer is at least partially within a recessed area on the backside of the rivet head. Wind stay.   29. A windstay according to claim 28, wherein the recess serves to limit the protrusion of the first washer.   30. A window stay according to claim 29, wherein the recessed area on the back side of the rivet head serves to limit the protrusion of the second washer.   The window stay according to any one of claims 22 to 31, wherein the rivet is a semi-tubular rivet.   33. A window according to any one of claims 22 to 32, wherein the rivet remains fixed with respect to the first element when the second element rotates relative to the first element. Stay.   The window stay according to any one of claims 22 to 33, wherein the tightened rivet tail meshes with the first opening to prevent the rivet from rotating relative to the first element.   The window stay according to claim 34, wherein the first opening has a non-circular shape.   The window stay according to claim 35, wherein the first opening has a polygonal shape.   The window stay according to any one of claims 22 to 36, wherein the first washer has a rounded cross section.   38. A windstay according to claim 37, wherein the first washer has a substantially oval cross section.   The window stay according to any one of claims 22 to 38, wherein the second washer has a rounded cross section.   40. A window stay according to claim 39, wherein the second washer has a substantially oval cross section.   The window stay according to any one of claims 23 to 40, wherein the first washer is thicker than the second washer in a dimension parallel to the rivet shaft. A window stay having a rivet friction pivot joint,
a. A first element having an inner side, an outer side, and a first opening;
b. A second element having an inner side, an outer side, and a second opening;
c. A rivet having a head, a shaft, and a tail, wherein the rivet shaft passes through the first and second openings, and the rivet head and tail are respectively outside the second and first elements; Meshed with rivets;
d. A first washer located between the inside of the first element and the inside of the second element;
e. A second washer located between the rivet head and the outside of the second element;
The first washer is thicker than the second washer in a dimension parallel to the rivet shaft;
A friction pivot joint is provided between the first element and the second element by the rivet, the first washer and the second washer.
Wind stay.

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