EP4102014A1

EP4102014A1 - Safety limiter and installation tool for safety limiter

Info

Publication number: EP4102014A1
Application number: EP22177560.4A
Authority: EP
Inventors: Esa Arola
Original assignee: Piesti Oy
Current assignee: Piesti Oy
Priority date: 2021-06-08
Filing date: 2022-06-07
Publication date: 2022-12-14
Anticipated expiration: 2042-06-07
Also published as: EP4102014B1; FI130282B; FI20215668A1

Abstract

A safety limiter (100) and an installation tool (200) for the safety limiter. The safety limiter (100) comprisesa sleeve (102) to be inserted in a hole (106) in the frame element (104), the opening (108) of the hole (106) being arranged on the outer surface of the frame element (104) facing the cover element (110), and the hole (106) of the opening (108) extending in the frame element (104) in the depth direction (112) of the frame element (104), anda pull transmitting means (114) comprising a first end with bulge (116) for limiting the movement of the pull transmitting means (114) through the sleeve (102), and a second end (122) provided with an angle fitting (112); anda fitting (126) comprising a front edge (132), and the fitting (126) comprising a hole (128) extending in the fitting (126) substantially in the direction (111) of the outer surface of the cover element (110);wherein the angle fitting (122) and the hole (128) are matched with each other,wherein at least part of the angle fitting (122) can be received in the hole (128) for limiting the movement of the cover element (110) from the frame element (104) to a distance where the pull transmitting means (114) is pulled through the sleeve and fastened by the angle fitting (122) to the fitting (126), and the bulge (116) is supported to the sleeve, wherein the weight of the cover element (110) can be supported to the frame element (104) via the pull transmitting means (114).

Description

Field of the invention

The invention relates to a safety limiter for a frame element, and an installation tool for the safety limiter.

Background of the invention

Safety glass, which is heavier than conventional window glass, is increasingly used in window panes. For holding and stopping a window equipped with safety glass, great forces are required, causing a strain on the hinges and fittings of the window. If the movement of the window is not limited, it can move freely and stop first upon an impact on a solid object, such as a floor, a wall, an adjacent window, or another object.
DE 20 2007 017 364 U1 describes a device for holding a window in a tilted position. One part of the device, namely a casement part, is fastened to a casement, and another part, namely a frame part, is fastened to a frame. A cord connects the casement to the frame and extends through the frame part. The movement of the window casement is limited by means of a weight suspended from the frame part, preventing the cord from passing through the frame part.
EP 0231849A describes a security device for preventing unauthorized opening of doors. The device comprises two mounting means connected by a cable. At its ends, the cable is provided with means preventing the passage of the cable through holes in the mounting means.
CN 106002796A describes an installation tool for installing cabled connectors. The installation tool comprises a protrusion whose tip is provided with a hexagonal clamping groove, whereby the installation tool can be applied to engage a hexagonal nut at the lower end of a connector, located below the installation plane. The handle of the installation tool is on the rotation axis when the tool is applied.

Brief summary of the invention

It is thus an aim of the invention to develop a solution to at least some of the above mentioned problems. The aim of the invention is achieved by a safety limiter and an installation tool which are characterized by what will be presented in the independent claims 1 and 9. Dependent claims 2 to 8 and 10 relate to advantageous embodiments of the invention.

Description of the drawings

In the following, the invention will be described with reference to the enclosed drawings, in which

Fig. 1 shows a safety limiter according to an example, installed in a window casement and a window frame;
Fig. 2 shows a cross-section of the fitting of Fig. 1 installed in a window casement;
Fig. 3 shows an example of a sleeve of a safety limiter;
Fig. 4 shows an installation tool for a safety limiter; and
Fig. 5 illustrates the fastening of a safety limiter to a window frame by means of an installation tool.

Detailed description of the invention

A safety limiter makes it possible to limit the movement of a cover element, fastened by hinges to a frame element installed in an opening of a building, with respect to the opening. The cover element may be fastened by hinges to be movable between a closed position and an open position. In the closed position of the cover element, the opening of the building is covered by the cover element, whereby the cover element prevents access through the opening. In the open position of the cover element, the opening of the building is at least partly open, whereby it is possible to enter and/or to exit the building through the opening. The safety limiter limits the movement of the cover element and thereby the size of the opening in the open position of the cover element. The frame element may be made of, for example, wood or metal.
Examples of cover elements include at least doors, windows and hatches. A building may comprise one or more openings, such as door openings and window openings, in which doors, windows and hatches can be installed, respectively. The cover element may be installed in a frame element, such as a frame, arranged in the opening of the building. The cover element may be fitted to the shape and the size of the opening in the building. The cover element may comprise, in turn, a sash or casement element, such as a casement, for example a door casement or a window casement.
A pull transmitting means may be, for example, an elongated piece, such as a strip of material, a rope, a cable, or a cord. The pull transmitting means may be made of, for example, plastic, metal, or fibre material. Examples of fibre material comprise natural fibres, such as acaba, sisal and hemp, as well as synthetic fibres, such as nylon, polypropylene and polyester. The pull transmitting means may comprise an elongated middle section and opposite ends separated by the middle section in the longitudinal direction of the pull transmitting means. One of the opposite ends may comprise a bulge, and one of the opposite ends may be an angle fitting. The angle fitting and the bulge can be fastened to the pull transmitting means, to be integrated in the pull transmitting means during its manufacture, for example by connecting the elements by soldering and/or crimping. Preferably, the pull transmitting means has a tensile strength making the pull transmitting means sufficiently strong to receive the weight, i.e. the pull or tensile force, of the cover element, such as a window, a door or a hatch, and to support the cover element directly or e.g. via the frame to the building. It should be noted that in addition to having a sufficient tensile strength, the pull transmitting means is preferably rigid. Thanks to its rigidity, the pull transmitting means can resist bending in a direction transverse to the longitudinal direction of the pull transmitting means. In this way, bending of the pull transmitting means in a direction transverse to its longitudinal direction can be reduced when the pull transmitting means is pushed in a direction substantially parallel with the longitudinal direction of the pull transmitting means, for example into a sleeve installed in a frame, for example upon closing a window or a door. It should be noted that the pull transmitting means may have various profiles, i.e. shapes in the cross-section transverse to the longitudinal direction. A circular profile provides the pull transmitting means with uniform stiffness. The material strip has a flat profile in its cross-section transverse to the longitudinal direction. The thickness of the strip is much smaller than its width, whereby the width dimension and the height dimension, or the thickness, are significantly different from each other. Thus, the rigidity of the strip in the width direction of the profile may almost negligible, while the strip can be bent in the thickness direction of the profile.
The safety limiter and the installation tool according to the invention can be implemented in a number of ways, of which some examples will be described in the following.
With reference to the drawings, Fig. 1, Fig. 2, Fig. 3, Fig. 4, and Fig. 5, a safety limiter 100 and an installation tool 200 for the safety limiter are provided. The safety limiter is suitable for use in arrangements comprising a frame and a casement fastened to the frame by means of one or more hinges, for example, to be movable from an open position to a closed position and from the closed position to the open position. Examples of casements comprise a window casement and a door casement which may be fastened to a window frame and a door frame, respectively. Moving the casement with respect to the frame makes it possible to close or to open an opening delimited by the frame, such as a window opening or a door opening, at least partly or even totally. In the following, the safety limiter will be described with reference to a window casement and a window frame, but the examples are also applicable to other frames, such as window casements and window frames. The cross-section of Fig. 2 shows a view along a surface extending in the direction 111 of the outer surface of a window casement 110 and facing the window frame 104. The safety limiter 100 comprises a sleeve 102 which can be inserted in a hole 106 in the window frame 104, the mouth 108 of the opening being arranged on the outer surface of the window frame 104 facing the window casement 110, and the opening 106 extending from the mouth 108 into the window frame in the depth direction 112 of the window frame 104. Furthermore, the safety limiter comprises a cable 114 comprising a first end with a bulge 116 for limiting the movement of the cable 114 through the sleeve 102, and a second end with a angle fitting 122. The safety limiter further comprises a fitting 126 comprising a front edge 132, and the fitting 126 comprises a hole 128, the hole 128 in the fitting 126 extending substantially in the direction 111 of the outer surface of the window casement 110. The angle fitting 122 and the hole 128 are fitted to each other, whereby at least part of the angle fitting 122 can be received in the hole 128 in order to limit the movement of the window casement 110 from the window frame 104 to a distance at which the cable 114 is pulled through the sleeve and fastened by the angle fitting 122 to the fitting 126, and the bulge 116 is supported to the sleeve, whereby the weight of the window casement 110 can be supported to the window frame 104 via the cable 114. The safety limiter is used for fastening the window casement to the window frame, whereby the opening of the window casement is limited by the length of the cable. When the safety limiter limits the movement of the window casement in relation to the window frame, the greatest distance between the window casement and the window frame is achieved when the window casement pulls the cable out of the sleeve so that the bulge of the cable is trapped by the sleeve within the window frame and prevents the movement of the window casement further away from the window frame. The window casement can be released to be opened without the safety limiter limiting the movement of the window casement, by pulling the angle fitting out of the hole 128 in the fitting 126. In this way, the window casement can be opened as desired, for example for washing the window.
The pull of the cable 114 is guided by the angle fitting to extend in parallel with the outer surface of the window casement, and by the bulge into the window frame. In this way, the safety limiter supports the window casement in its extreme position, in which the distance between the window casement and the window frame is the greatest when the safety limiter is used.
The bulge 116 of the cable 114 supports the cable within the sleeve, whereby the sleeve prevents the cable from passing through the sleeve, and the pull of the cable is transmitted to the sleeve and further via the sleeve to the inside of the window frame.
In an example, the fitting of the safety limiter comprises a guide element 120 which is configured to position the fitting 126 on the outer surface of the window casement 110 so that the front edge 132 of the fitting 126 is flush with or extends beyond the outer edge 118 of the window casement 110. The placement of the fitting makes it possible to insert the free end of the angle fitting in the hole in the fitting so that a contact between the angle fitting and the window frame can be avoided.
In an example, the guide element 120 of the fitting 126 may be an extension of the front edge 132 of the fitting 126, which can be supported to the outer edge 118 of the window casement 110 after the fitting has been installed in the window casement 110. Thus, the guide element covers the outer edge 118 at least partly, whereby the guide element can protect the outer edge 118 of the window casement 110 from a contact with the angle fitting.
Figure 1 shows a window frame 104 installed in a window opening of a building, such as a house. The window frame is a peripheral structure in which a window casement 110 can be fastened by one or more hinges. The window casement 110 and the window frame 104 can be fitted to each other so that the window casement closes the window opening when the window casement is in the closed position. In the closed position, the window casement 110 is substantially secured against the window frame 104, and there is typically no opening, or at least no need for an opening, between the window casement and the window frame.
In the closed position of the window casement 110, the cable is inserted in the hole 106 inside the window frame 104. When the window casement is opened, the window casement is turned or tilted, supported by the hinges, with respect to the window frame, for example away, i.e. outwards, from the window frame. Thus, the angle fitting being received in the hole in the fitting, the window casement pulls the cable through the sleeve, and the window casement can be moved away from the window frame until the bulge in the cable supports the window casement to the sleeve, which prevents movement of the window casement.
The window casement 110 is a casing structure in which a window pane is fastened. The window pane may be made of e.g. glass, such as safety glass, which is at least partly transparent to light. Safety glass is glass having a very strong structure which makes it safe. Safety glass may be tempered, laminated and/or wired glass. The thickness of the safety glass may be, for example, 4 mm for tempered and/or laminated glass. The use of safety glass is recommended, for example, for a fixed window at a height lower than 700 mm from the floor. In practice, safety glass can be used to avoid accidents, such as falls, and/or to protect from violence from the outside.
The window casement 110 can be fastened with one or more hinges to the window frame 104, whereby the window casement can be turned from the open position to the closed position, and vice versa. In the drawings, Fig. 1 shows the window casement of a bottom-hinged window in the open position. In the open position, in the closed position, and when turning the window casement between these positions, the window casement remains connected to the window frame. The window casement can be opened from the closed position by moving, i.e. turning, the upper edge of the window casement apart from the window frame in the depth direction of the window frame. In this way, the window casement is brought to the open position. Thus, supported by hinges, the upper edge of the window casement moves along a curved path away from the window frame. On the other hand, the window casement may be arranged in a side-hinged window, whereby a vertical edge of the window casement is fastened with one or more hinges to the window frame, and the window casement can be opened from the closed position to the open position by moving the vertical edge opposite to the hinged vertical edge of the window casement apart from the window frame in the depth direction of the window frame. Thus, the vertical edge of the window frame is supported by the hinges when it moves along a curved path away from the window frame.
The sleeve 102 is an elongate piece which is hollow inside, whereby the cable 114 can be inserted into and through the sleeve. The inner diameter of the sleeve may thus be greater than the thickness of the cable. The cable can be moved in the longitudinal direction of the sleeve. The outer surface of the sleeve is provided with a threading 107, by which the sleeve can be fastened to the window frame 104 by driving the sleeve into the window frame in the depth direction 112 of the window frame. The window frame may be made of, for example, wood, whereby the threading of the sleeve can bite into the wood of the window frame and thereby fix the sleeve in the hole 106 in the window frame. On the other hand, the window frame may be provided with an integrated counterpiece with a threading matching with the threading of the sleeve.
In an example, the sleeve 102 may comprise a front disc 103 with a hole 105 for moving the cable into the sleeve, into the window frame, and out of the sleeve, to the outside of the window frame. The inner diameter d_s of the sleeve may be greater than the diameter d_e of the hole in the front disc, whereby the sleeve and the window frame can be covered under the front disc, and the hole in the front disc guides and/or supports the cable at the mouth of the sleeve. The hole in the front disc may be aligned with the axis of the sleeve, whereby the cable passing through the hole in the front disc is guided to the axis of the sleeve, spaced from the inner walls of the sleeve. In this way, it is possible to reduce contact between the cable and the inner face of the sleeve and thereby friction on the cable caused by the inner face. At the same time, the installation of the sleeve in the window frame is provided with a finished appearance. The sleeve can be installed by placing the front disc on the outer surface of the window frame so that the cable inserted in the sleeve protrudes from the front disc. The front disc may act as a cover plate on the opening 108 of the hole in the window frame, whereby the front disc covers, for example, the boundary between the sleeve and the window frame on the surface of the window frame around the sleeve.
In an example, the outer face of the sleeve 102 is provided with a threading 107, and the front disc 103 comprises one or more holes, openings, incisions, or grooves for screwing and fastening the sleeve with the threading 107 into the window frame. The holes, openings, incisions, or grooves in the front disc make it possible for an installation tool 200 to engage the front disc for rotating and screwing the sleeve into the window frame. The hole in the window frame may be longer than the sleeve in the depth direction of the window frame. The sleeve may consist of, for example, steel.
The cable 114 is an elongate piece comprising a flexible middle section extending between the opposite ends. At one end, the cable is provided with a bulge 116, and at the other end, the cable is provided with a angle fitting 122. The cable is fastened by the bulge via the sleeve 102 to the window frame 104 and by the angle fitting via the fitting 126 to the window casement 110.
The bulge 116, or expansion, may be spherical or have the shape of a sleeve, in which the cable is arranged. The bulge can be attached to the cable by crimping the bulge onto the cable, or by soldering the bulge onto the cable. The bulge may consist of, for example, lead. The size of the bulge may be selected so that the bulge can move within the window frame in the depth direction of the window frame 104, but not through the sleeve. Thus, the diameter of the spherical bulge is smaller than the hole in the window frame, in which the sleeve is installed in the window frame. The inner diameter of the sleeve 102 may be fitted so that the bulge cannot pass through the sleeve; in other words, the sleeve may have an inner diameter smaller than the bulge.
The angle fitting 122 may comprise a first section which fastens the angle fitting to the cable and extends as an elongation from the cable, and a second section arranged at an angle to the first section. The first section of the angle fitting may be attached to the cable by soldering or crimping. The second section of the angle fitting may be free; in other words, it is the free end 140 of the angle fitting. The free end may be introduced in a hole 128 in the fitting 126, whereby the safety limiter can restrict the movement of the window casement 110, and the weight of the window casement can be supported via the cable to the window frame 104. The angle between the sections of the angle fitting may be, for example, 80 to 100 degrees, such as 85 to 95 degrees, for example 90 degrees. Thanks to the angle fitting, the pull of the cable can be guided to be parallel with the outer surface of the window casement. The flexibility of the cable makes it possible for the cable to bend in a direction transverse to the depth direction of the window frame. Thanks to the flexible section of the cable extending from the angle fitting to the opening 105 of the sleeve and into the window frame, the longitudinal direction 113 of the angle fitting towards the window frame does not need to extend from the fitting directly towards the hole 105 in the sleeve. When the window casement is moved from the closed position to the open position, the window casement pulls the cable fastened to the fitting out of the window frame and, finally, the bulge of the cable is supported to the sleeve and limits the distance between the window casement and the window frame to the open position. Bending of the cable allows the window casement to turn with the hinges when the window casement is moved from the closed position to the open position and the window casement pulls the cable out of the window frame. The bulge and the angle fitting may be made in the form of solid pieces of stainless steel, and the cable connecting them may be a steel braid, i.e. a braided steel cable. The braided steel cable may be coated with plastic.
The opening 130 of the hole in the fitting 126 is arranged at the edge of the fitting, or at the front edge 132 which is arranged at the outer edge 118 of the window casement 110 when the fitting is installed in the window casement. In this way, the angle fitting 122 can be fixed in the hole 128 of the fitting, and the window casement can be supported to the cable and the window frame 104 in a plane parallel to the outer surface of the window casement.
In an example, the fitting comprises a locking mechanism 134 arranged to engage a locking formation 124 for keeping the angle fitting 122 in the hole 128 of the fitting 126. By means of the locking mechanism, a force can be exerted on the part of the angle fitting received in the hole 128 of the fitting 126, for example on the locking formation 124 at the free end 140 of the angle fitting, to hold the angle fitting in the hole. By means of the angle fitting, the pull of the cable is exerted on the outer surface of the window casement. Thus, the pull of the cable is not exerted directly on the locking formation. The locking mechanism may be, for example, a spring press screw. The locking formation 124 may be, for example, a groove or an incision in the angle fitting.
In an example, the locking mechanism 134 may be configured to be locked in the angle fitting 122 via the locking formation 124 after the locking formation 124 has been received at a locking depth in the hole 128 in the direction 111 of the outer surface of the window casement 110.
In an example, the locking mechanism may comprise a spring 136 and a latch element 138. When the angle fitting is placed at the locking depth in the hole of the fitting, the spring presses the latch element against the locking formation of the angle fitting. The free end 140 of the angle fitting may be designed in a round or slanted shape. The design of the free end is useful in deflecting the latch element against the spring force of the locking mechanism, facilitating the insertion of the angle fitting into the hole in the fitting.
The fitting 126 can be fastened with screws to the window casement 110, whereby at least part of the angle fitting 122 of the cable, for example the free end 140 of the angle fitting, can be inserted in the hole in the fitting, and the movement of the window casement can be limited by the cable, and the weight of the window casement can be supported to the window frame 104 via the cable 114. The fitting can be fastened to the outer surface of the window casement and aligned at the height of the opening 108 in the window frame, whereby in the closed position, the hole 128 in the fitting is flush with the opening and the cable extends horizontally out of the sleeve and into the fitting. The fitting can be made of, for example, cast aluminium.
In an example, the guide section 120 of the fitting may be an extension of the front edge 132 of the fitting, which can be supported to the outer edge 118 of the window casement 110. Thus, the guide section positions the fitting with respect to the window casement and the cable. In this way, the cable can be fastened to the fitting by the angle fitting whose free end 140 can be introduced in the fitting.
In an example, the free end 140 of the angle fitting may be elongated and have a circular cross-section. Thus, the hole 128 of the fitting 126 may also have a circular cross-section, whereby the angle fitting can be turned with respect to the window casement when the window casement is turned from the open position to the closed position and vice versa. Thus, the cable extending from the fitting to the window frame can extend as straight as possible between the window casement and the window frame. It should be noted that the turning of the angle fitting may also be enabled by a partly circular cross-section, for example a rounded cross-section, of the angle fitting and the hole in the fitting.
Figure 4 shows an installation tool 200 for installing the sleeve 102 of the safety limiter and the cable 114 passed through the sleeve, in the window frame 104. The cable of the safety limiter is provided with a bulge 116 preventing the insertion of the cable in the sleeve or its removal from the sleeve. The diameter of the bulge may be larger than the inner diameter of the sleeve, whereby the cable cannot be passed through the sleeve with the bulge in front; therefore, the cable must be passed through the sleeve before the sleeve is fastened to the window frame. By means of the installation tool, the sleeve through which the cable has been passed can be installed in the window frame 104. The cable may have been passed through the sleeve, for example, with the angle fitting 122 first, or without the angle fitting 122 and/or the bulge 116, whereby the angle fitting and/or the bulge may have been fastened to the cable after the cable has been passed through the sleeve. One end of the installation tool, or the sleeve end 202, is configured to be fastened to the sleeve 102, and the opposite end, or the drive end 204, is configured to be fastened to an electric tool 216, such as a drilling machine. For using the installation tool, the sleeve end is placed on the front disc 103 of the sleeve, and the drive end is fastened to the electric tool. The sleeve end comprises one or more protrusions, or pins 206, by which the installation tool is fastened to the sleeve so that the sleeve can be rotated by the installation tool when the sleeve end is placed on the front disc. In an example, the sleeve end comprises two pins which may be arranged at the sleeve end, on radially opposite sides of the sleeve end, on the surface 212 of the sleeve end facing the front disc.
By means of the electric tool 216, the installation tool 200 can be fastened to the window frame 104 by rotating the installation tool around the longitudinal axis 210 of the installation tool with a moment generated by the electric tool, whereby the sleeve 102 is screwed in the window frame. The installation tool comprises a groove 208 or an elongate opening extending from the surface 212 to be placed on the front disc of the sleeve end towards the opposite end of the installation tool in the longitudinal direction of the installation tool, or axially. The groove may be arranged between the pins 206 on the surface of the sleeve end facing the front disc. The groove is configured to receive the angle fitting of the cable at least partly in the groove. The groove extends from the radial surface 214 of the installation tool, surrounding the axis of the installation tool, to the inside of the installation tool, that is, radially inwards from the surface surrounding the axis of the installation tool. Thus, the installation tool is partly hollow from the sleeve end towards the drive end. The dimensioning of the groove, for example its length in the direction of the axis of the installation tool and its width in the radial direction, can be fitted according to the cable and the angle fitting installed in it, so that the angle fitting fits at least partly in the groove when the surface to be placed on the front disc of the sleeve end is supported to the front disc. Preferably, both the section fastening the angle fitting 122 to the cable and the free end 140 of the angle fitting can be placed at least partly in the groove. The groove may be dimensioned, for example, so that when the sleeve end of the installation tool is placed on the front disc of the sleeve, the free end of the angle fitting, placed at an angle to the section of the angle fitting fastened to the cable, extends radially from the groove of the installation tool. Thanks to the groove, the installation tool can be used for fastening a sleeve to a window frame, through which sleeve a cable has been passed which has an angle fitting at one end and a bulge at the opposite end. When installing the sleeve by using the installation tool, the angle fitting can be placed at least partly in the groove, and the protrusion or protrusions at the sleeve end can be interlocked with the sleeve. Thus, the sleeve can be installed in the window frame by rotating the sleeve with the installation tool. Because the angle fitting is placed in the groove, the angle fitting remains stationary when the sleeve is fastened to the window frame by screwing in. In this way, the sleeve can be fastened in a way that is safe to the assembling fitter as well as to the structures surrounding the window frame. The material of the installation tool may be steel. The total length of the installation tool may be, for example, 10 cm. The tool may be a cylindrical piece with a total length of about 10 cm and a diameter in the order of, for example, the size of the front disc of the sleeve. The end of the installation tool, opposite to the sleeve end, may be slimmed down for connecting the installation tool to an electric tool. It should be noted that the drive end of the installation tool may also be a hand grip or a handle, whereby the tool can be applied manually instead of being driven by an electric tool.
Fig. 5 illustrates the fastening of a safety limiter to a window frame by means of an installation tool. The drive end of the installation tool 200 is fastened to an electric tool 216 which in this example is a hand-held drilling machine. The surface 212 of the installation tool to be placed on the front disc is placed on top of the front disc 103 of the sleeve, and the free end 140 of the angle fitting 122 of the cable 114 thus extends from the groove in the radial direction of the installation tool. The sleeve is placed on the opening 108 of the hole 106 in the window frame 104, where the sleeve can be screwed in by the moment of the electric tool. The installation tool is rotated by driving the electric tool. The installation tool can engage the front disc of the sleeve by means of the surface 212 to be placed on the front disc, whereby the moment of the electric tool is transmitted to the sleeve and the sleeve is screwed in the window frame 104. In this way, the bulge 116 of the cable 114 is arranged inside the window frame, whereby the placement of the angle fitting in the hole in the fitting will limit the movement of the window casement 110. The installation of the safety limiter can be performed in connection with the manufacture of the window at a factory, or as a retrofit, whereby a hole 106 can be made in the window frame by, for example, drilling. It should be noted that the installation of the fitting in the window casement can also be made in connection with the manufacture or as a retrofit. The axial direction may be the longitudinal direction of an elongated piece. The elongated piece can be rotated around its longitudinal axis, whereby the longitudinal direction and the axis direction may be parallel. The radial direction may be a direction transverse to the longitudinal direction of a piece, such as an elongated piece. The piece may be rotatable around its longitudinal axis, whereby the radial direction is a direction transverse to the axis. The radial surface extends around the axis of the piece and in the longitudinal direction of the axis.
In some cases, features presented in this application can be used as such, irrespective of other features. On the other hand, features presented in this application can be combined, where necessary, to make different combinations. Even if some steps or the device have been presented as a whole, they may be divided in parts whereby some steps or parts of the device may be omitted or their order may be changed.
It will be obvious for a person skilled in the art that technological advances will entail a variety of implementations of the basic idea of the invention. Thus, the inventions and the embodiments are not limited by the examples described above, but they can be varied within the scope of the claims.

List of reference numerals

100: safety limiter
102: sleeve
103: front disc of the sleeve
104: frame element, for example a window frame
105: hole in the sleeve
106: hole in the window frame
107: threading
108: opening of the hole in the window frame
110: cover element, for example a window casement
111: direction of the outer surface of the window casement
112: depth direction of the window frame
113: longitudinal direction of an angle fitting facing the window frame
114: pull transmitting means, for example a cable
116: bulge
118: outer edge of the window casement
120: guide element
122: angle fitting
124: locking formation
126: fitting
128: front edge of the fitting
130: guide element
132: front edge
134: locking mechanism
136: spring
138: latch element
140: free end of the angle fitting
200: installation tool
202: sleeve end
204: drive end
206: pins
208: groove
210: axis
212: surface to be placed on the front disc
214: radial surface of the installation tool
216: electric tool

Claims

A safety limiter (100) for limiting the movement of a cover element (110) fastened by hinges to a frame element (104) installed in an opening of a building, comprising:
- a sleeve (102) to be inserted in a hole (106) in the frame element (104), the opening (108) of the hole (106) being arranged on the outer surface of the frame element (104) facing the cover element (110), and the hole (106) of the opening (108) extending in the frame element (104) in the depth direction (112) of the frame element (104), characterized in that the safety limiter (100) comprises:

- a pull transmitting means (114) provided with an angle fitting (122) and a bulge (116), the pull transmitting means (114) comprising
∘ a first end with said bulge (116) for limiting the movement of the pull transmitting means (114) through the sleeve (102), and

∘ a second end (122) provided with said angle fitting (112) comprising a first section by which the angle fitting (122) is fastened to the pull transmitting means (114), and a second section arranged at an angle to the first section and comprising the free end of the angle fitting (122); and

- a fitting (126) comprising a front edge (132), and the fitting (126) comprising
∘ a hole (128) extending in the fitting (126) substantially in the direction (111) of the outer surface of the cover element (110);

- wherein the angle fitting (122) and the hole (128) are matched with each other, wherein the free end of the angle fitting (122) can be received in the hole (128) for limiting the movement of the cover element (110) from the frame element (104) to a distance where the pull transmitting means (114) is drawn through the sleeve and fastened by the angle fitting (122) to the fitting (126), and the bulge (116) is supported to the sleeve, wherein the weight of the cover element (110) is supported to the frame element (104) via the pull transmitting means (114).
The safety limiter (100) according to claim 1, wherein the sleeve (102) comprises a front disc (103) with a hole for moving the pull transmitting means (114) into the sleeve and out of the sleeve.
The safety limiter (100) according to claim 2, wherein the outer surface of the sleeve (102) is provided with a threading (107), and the front disc (103) comprises one or more holes, openings, incisions, or grooves for screwing in and fastening the sleeve with the threading (107) to the frame element (104).
The safety limiter (100) according to any of the claims 1 to 3, wherein the cross-section of the free end of the angle fitting and the cross-section of the hole in the fitting are at least partly circular.
The safety limiter (100) according to any of the claims 1 to 4, wherein the angle fitting (122) of the pull transmitting means (114) is made of stainless steel, and the pull transmitting means (114) comprises a braided steel cable connecting the angle fitting (122) to the bulge (116).
The safety limiter (100) according to any of the claims 1 to 5, wherein the fitting (126) comprises a guide element (120) configured to position the fitting (126) on the outer surface of the cover element (110) so that the front edge (132) of the fitting (126) is flush with or beyond the outer edge (118) of the cover element (110).
The safety limiter (100) according to claim 6, wherein the guide element (120) of the fitting (126) is an extension of the front edge (132) of the fitting, which extension can be supported against the outer edge (118) of the cover element (110).
The safety limiter (100) according to any of the claims 1 to 7, wherein the angle fitting (122) comprises a locking formation (124), and the fitting (126) comprises a locking mechanism (134) configured to be fastened to the locking formation (124), for keeping the angle fitting (122) in the hole (128) of the fitting (126).
An installation tool (200) for installing a sleeve (102), and a pull transmitting means (114) passed through the sleeve (102), of a safety limiter (100) according to claim 1 in a frame element (104), wherein the installation tool (200) has a first end, or a sleeve end (202), configured to engage the sleeve (102), and an opposite end, or a drive end (204), which is
a. configured to be fastened to an electric tool (216), such as a drilling machine, or

b. which comprises a hand grip;
and the installation tool (200) comprises a groove (208), or an elongate opening, extending from the surface (212) of the sleeve end (202) to be placed on the front disc (103) of the sleeve (102) towards the opposite end, or the drive end (204), of the installation tool in the longitudinal direction of the installation tool (200), and the groove (208) is configured to receive the angle fitting (122) of the pull transmitting means (114) at least partly in the groove, characterized in that the sleeve end (202) of the installation tool (200) comprises one or more protrusions, or pins (206), for engaging the installation tool with the sleeve so that the sleeve can be rotated by the installation tool when the sleeve end is placed on the front disc, wherein the sleeve is fastened to the frame element (104) by rotating the installation tool around the longitudinal axis of the installation tool.
The installation tool according to claim 9, provided with two pins (206) arranged at the sleeve end (202), on radially opposite sides of the sleeve end (202), on the surface (212) of the sleeve end facing the front disc.