Mounting device for pleated blinds

Abstract

Mounting device for mounting a tension shoe of a pleated blind system on a horizontal window rebate section, comprising a positioning unit with a support surface (22) for resting on a mounting surface of the horizontal window rebate section adjacent to a window glass, a contact surface (14a, 14b) arranged orthogonally to the support surface (22) for applying the mounting device (1) to a vertical window rebate section perpendicular to the horizontal window rebate section and a clamping shoe holder (12a, 12b) formed by a recess in the positioning unit for receiving and holding the clamping shoe (2a, 2b), which is formed at one end by a fixed mounting distance (D) from the contact surface (14a, 14b), frontal stop surface (16a, 16b) and extends away from the contact surface (14a, 14b) along a first direction (R1) parallel to the window glass, and a screw holder (10) fastened on a user side (S1) of the positioning unit opposite the support surface (22) and having a receiving opening (33) for clamping a screw (6), wherein a longitudinal axis (A) of the receiving opening (33) is arranged orthogonally to the support surface (22) and extends through the clamping shoe receptacle (12a, 12b) in order to guide the screw (6) through a mounting hole (4) of a clamping shoe (2a, 2b) received in the clamping shoe receptacle (12a, 12b), wherein the receiving opening (33) is formed from a plurality of parts (36) of the screw holder (10) which are elastically fastened to the positioning unit, and wherein the receiving opening (33) is elastically expandable to allow the screw (6) and the screw head to be pushed through along the longitudinal axis (A) and the clamping shoe receptacle to be screwed to the window rebate section.

Description

[0001] The invention relates to a mounting device for a tension shoe of a pleated blind system and a method for determining the width of a pleated blind system and for mounting the tension shoe on a horizontal window rebate section.

[0002] One way to install pleated blinds on window rebates is to mount a tensioning shoe at each end of a horizontal window rebate section. The tensioning cords that guide the pleated blinds can be stretched between the tensioning shoes.

[0003] The horizontal window rebate sections border the window glass at the top and bottom and are connected to each other by two vertical window rebate sections, each of which borders the window glass on the sides.

[0004] The horizontal window rebate sections each form a mounting surface adjacent to the window glass, on which the clamping shoes are mounted, and a front surface, which is generally arranged at an angle between 90° and 120° to the mounting surfaces and points towards an interior space.

[0005] Mounting aids for tension shoes of pleated blind systems are well known in industrial practice. These mounting aids consist of rectangular plates with a recess at each of their two long ends, each of which can accommodate a part of a tension shoe and be held in place by a pleated blind system. The recesses extend from a contact surface of the mounting aid into the mounting aid.

[0006] The mounting aid can be placed on a horizontal window rebate section such that the contact surface opposite the clamping shoe rests against a vertical window rebate section. Furthermore, one long side of the mounting device can be placed against the window glass. This defines the mounting position of the clamping shoe in a first direction parallel to the window glass and in a second direction orthogonal to the window glass.

[0007] The tension shoe has a mounting hole through which a screw is screwed into a horizontal window rebate section to attach the tension shoe to it.

[0008] These mounting devices have several disadvantages. In particular, even when mounting on a plastic rebate, which is less prone to cracking than a wooden rebate, pre-drilling is necessary for mounting the clamping shoe. Furthermore, the screw must be held in place during installation in addition to the mounting device. This is particularly time-consuming and complicates installation when mounting the clamping shoe on the upper, horizontal section of the window rebate, where the installer has to work overhead.

[0009] Furthermore, the window or window rebate must first be measured to determine the required width of the pleated blind. Traditionally, the window width has been determined using a common household measuring device, such as a folding rule or tape measure. This can lead to errors or inaccuracies. In particular, a measurement may be taken at a different distance from the window glass than the actual installation. With tapered window rebates, this can result in wide gaps between the pleated blind and the adjacent vertical window rebate sections, or in the pleated blind touching the vertical window rebate sections.

[0010] Furthermore, a template for pleated blind installation is known from practice, researched at www.rollladen-jalousien.de, retrieved from web.archive.org in the version dated November 27, 2020, as well as an installation aid for nails, researched at http: / / www.der-technikprofi.de, retrieved on January 13, 2022.

[0011] In addition, DE 10 2016 122 915 A1 discloses a positioning aid for fastening sun protection devices, and US 5 179 787 A discloses a positioning aid for curtain supports, etc., which, in addition to measuring devices, has options for marking and attaching “starting holes” for screwing on the fastening.

[0012] The object of the present invention is to overcome the problems described above. In particular, it is intended to provide a device and method with which the tension shoe can be mounted easily, precisely, and accurately, and with which the width of the pleated blind system can be determined easily, accurately, and without error.

[0013] The object is achieved according to the invention by a device according to claim 1.

[0014] The mounting device according to the invention serves to mount a tension shoe of a pleated blind system on a horizontal window rebate section.For this purpose, the mounting device has a positioning unit with a support surface for placing on a mounting surface of the horizontal window rebate section adjacent to a window glass, a support surface arranged orthogonally to the support surface for placing the mounting device on a vertical window rebate section at right angles to the horizontal window rebate section and a clamping shoe receptacle formed by a recess in a positioning unit for receiving and holding the clamping shoe, which is delimited at one end by a front-side stop surface formed at a fixed mounting distance from the support surface and extends away from the support surface along a first direction parallel to the window glass, and a screw holder fastened to a support surface on the user side of the positioning unit opposite said support surface and having a receiving opening for clamping a screw.

[0015] A longitudinal axis of the receiving opening is arranged orthogonally to the support surface and runs through the clamping shoe holder in order to guide the screw through a mounting hole of a clamping shoe received in the clamping shoe holder.

[0016] The contact surface is therefore designed to be engageable with a surface of the vertical window rebate section that is orthogonal to and adjacent to the mounting surface of the horizontal window rebate section and adjacent to the window glass in order to position the mounting device in a mounting position on the window rebate.

[0017] The receiving opening is formed from several parts of the screw holder, which are elastically attached to the positioning unit, wherein the receiving opening is elastically expandable to allow the screw and the screw head to be pushed through along the longitudinal axis and the clamping shoe holder to be screwed to the window rebate section.

[0018] The screw can be pushed through the receiving opening by an axial force acting on the screw along the longitudinal axis.

[0019] The advantage of the device according to the invention is that it simplifies the installation of the clamping shoe or a lower part of the clamping shoe. In particular, the mounting device can hold and guide a screw while it is screwed into a horizontal window rebate section. This simplifies screwing in. Furthermore, by guiding the screw using the mounting device, material damage to the window rebate is avoided. This reduces the risk of cracking in a wooden rebate and allows for drilling into other rebate materials, such as plastic, without the otherwise necessary pre-drilling. Accordingly, the mounting device is particularly advantageous for plastic rebates.

[0020] Generally, a lower part of the clamping shoe is first mounted on the mounting surface using the mounting device, and then an upper part of the clamping shoe is pushed onto it. However, one-piece clamping shoes or clamping shoes that are mounted on the window rebate in an assembled state are also conceivable. For the sake of simplicity, the term "clamping shoe" is used synonymously in this document for a part of a clamping shoe or a complete clamping shoe.

[0021] The receiving opening can have a cylindrical shape. In particular, the receiving opening of the screw holder can be formed by a hollow cylinder.

[0022] The hollow cylinder can comprise several partial cylinders, preferably two half cylinders, which are movably attached to the positioning unit. The half cylinders or other parts of the screw holder that form the receiving opening can be connected to the positioning unit and / or to each other by means of a rigid joint. The rigid joint can comprise a cylindrical hinge element and webs by means of which the hinge element can be connected to the parts or half cylinders. In this embodiment, the hinge element and / or the webs are elastically deformable to increase the diameter of the receiving opening.

[0023] The receiving opening can have a screw head stop formed by a narrowing of an inner diameter of the receiving opening. The receiving opening can have a first inner diameter in a first section which is larger than a second inner diameter in a second section. In a relaxed, undeformed normal state of the receiving opening, the first and second inner diameters are larger than the diameter of the shank of the screw but smaller than the diameter of a screw head of the screw. The shank of the screw can therefore be inserted into the receiving opening until the screw head comes to rest on an upper edge of the receiving opening. By pressing at least the first section of the receiving opening apart, the inner diameter expands until it is larger than the diameter of the screw head.In this state, the screw can be moved further in the screw holder, preferably to the point where the screw head rests on the screw head stop formed by the inner diameter constriction. This places the screw holder in a holding position. In the holding position, the receiving opening in the first section presses against the screw head due to the elastic restoring force, thus holding the screw in its position, while the screw shaft extends through the second section of the receiving opening.

[0024] Preferably, the screw in the screw holder is fully seated in the receiving opening. This prevents the tip of the screw from scratching the window rebate when the mounting device is applied. Accordingly, the screw must be pressed down along its longitudinal axis to make contact with the window rebate and be screwed into it.

[0025] The screw can be pressed, for example using a screwdriver, along its longitudinal axis toward the horizontal window rebate section until one end of the screw touches the horizontal window rebate section and can be screwed into it using a screw thread. The screw head resting on the screw head stop pushes at least the second section of the receiving opening, preferably the entire receiving opening, apart due to the movement of the screw until the second inner diameter is larger than or equal to the diameter of the screw head. This allows the screw head to also be moved through the second section.

[0026] The second section of the receiving opening can be followed by a third section with a larger inner diameter than the second section. This makes it easier to tighten the screw after it has already been partially screwed into the horizontal window rebate section, as the screw is already held and guided by the first thread steps screwed into the rebate, and the clamping force of the receiving opening makes further tightening difficult.

[0027] The receiving opening in the screw head stop can be conically tapered along the longitudinal axis toward the support surface of the positioning unit, so that the receiving opening continuously widens when a screw head is moved through the screw head stop. The screw head stop then has a conical shape. This creates a continuous transition between the first and second sections of the receiving opening and facilitates screwing the screw past the screw head stop.

[0028] The positioning unit may have, on a support side on which the support surface is formed, a positioning stop which is designed to bear against a front surface of the horizontal window rebate section in order to define the mounting position in a second direction orthogonal to the window glass.

[0029] The positioning stop, which is designed to rest against the front surface, offers the advantage that the position of the pleated blind in the second direction, which runs orthogonally to the window glass, is determined in relation to the front surface, not to the window glass. With pleated blinds, the visual impression of the interior of a building is particularly crucial. A viewer, especially with a closed pleated blind, perceives the distance of the pleated blind from the front surface and not from the window glass, so that a pleated blind can be more easily mounted in the visually desired position with this embodiment of the mounting device according to the invention.

[0030] Often, the mounting surface and the front surface of the horizontal window rebate section are not arranged at a right angle to each other, but at an angle greater than 90°. If a contact surface of the positioning stop is arranged at a right angle to the support surface, only one outermost edge of the positioning stop comes into contact with the front surface in such a rebate, and the position of the clamping shoe is determined in relation to a random contact line that depends on the height of the positioning stop and the angle of the rebate surfaces.

[0031] For the best visual effect, it is advantageous to position the tensioning shoe and the pleated blind system at the edge where the front surface and the mounting surface meet. To achieve this, the contact surface of the positioning stop can be positioned at an angle between 90° and 180°, between 100° and 135°, or between 110° and 125° to the contact surface.

[0032] If the angle between the support surface and the contact surface of the positioning stop is greater than the angle between the mounting surface and the front surface, the positioning stop only comes into contact with an area of ​​the front surface adjacent to the edge of the mounting surface, so that the position of the clamping shoe along the second direction is fixed with respect to this edge.

[0033] The screw holder can be detachably attached to the positioning unit. Preferably, the screw holder is attached to the positioning unit by means of a fastening screw. For this purpose, the positioning unit can have a fastening hole extending from the support side to the user side, and the screw holder can have an internal thread for receiving the screw. In this case, the screw head is preferably countersunk on the support side, for example, in a projection of the positioning stop. Alternatively, the screw holder can have a fastening hole, and the positioning unit can have an internal thread for receiving the screw.

[0034] The screw holder is a wearing part, so a detachable fastening of the screw holder offers the advantage that the screw holder is replaceable.

[0035] The clamping shoe holder can have two parallel side surfaces that delimit the recess, are arranged orthogonally to the front stop surface and are designed to form a press fit with the clamping shoe.

[0036] A recess adjacent to the stop surface in an axial direction running along the longitudinal axis may be provided in the positioning unit. The recess extends from the stop surface along the first direction and is adapted to receive a corresponding projection of a clamping shoe to limit movement of the clamping shoe in the axial direction.

[0037] Furthermore, in an axial direction running along the longitudinal axis, recesses adjacent to the side surfaces may be provided in the positioning unit, which recesses extend from the stop surface along the second direction and are suitable for receiving corresponding projections of a clamping shoe in order to limit a movement of the clamping shoe in the axial direction.

[0038] These recesses offer the advantage that they can each at least partially accommodate a projection of the clamping shoe. This secures the clamping shoe against loosening in at least one axial direction. For example, the recess adjacent to the front stop surface can be designed toward the support side. A corresponding projection of the clamping shoe thus prevents the clamping shoe from moving toward the user side.

[0039] The recesses on the side surfaces can be formed on the user side, preventing movement toward the support side. The recesses on the side surfaces are advantageously located at the end of the clamping shoe mount opposite the front stop surface.

[0040] Furthermore, the mounting device can have a first lateral contact surface and a second lateral contact surface parallel to the first and a first and a second clamping shoe receptacle aligned with one another, wherein the two contact surfaces are arranged at opposite ends of the mounting device.

[0041] In this embodiment, the first clamping shoe receptacle extends from a first contact surface to a first end-side stop surface, which is formed at the predetermined mounting distance from the second contact surface, into the positioning unit, and the second clamping shoe receptacle extends from a second contact surface to a second stop surface, which is formed at the predetermined mounting distance from the first contact surface, into the positioning unit.

[0042] In this embodiment, the mounting device is preferably substantially mirrored about a central axis that runs orthogonally to the window along the second direction. This offers the advantage that clamping shoes can be mounted in all corners of the window rebate using a single mounting device.

[0043] In this embodiment, one screw holder is preferably also provided for each clamping shoe receptacle.

[0044] Furthermore, a method for determining the width of a pleated blind system for a window rebate with a previously described mounting device according to claim 13 is according to the invention.

[0045] The procedure includes at least the following steps: Placing the support surface of the mounting device on the mounting surface of the horizontal window rebate section, simultaneously placing the support surface on the vertical window rebate section; Applying a dimension mark to the mounting surface on the front stop surface in the clamping shoe holder; Placing the support surface of the mounting device or a second mirrored mounting device on the mounting surface of the horizontal window rebate section, simultaneously placing the support surface on a second vertical window rebate section opposite the first vertical window rebate section; Applying a second dimension mark on the mounting surface on another front stop surface and

[0046] Measuring a distance between the first and second measuring marks and

[0047] Add twice the installation distance to the measured distance to determine the maximum width of the pleated blind.

[0048] Using the installation jig as a tool for determining the width of the pleated blind system can prevent gaps from forming next to the pleated blind or the pleated blind from coming into contact with the vertical window rebate section, as the measurement is performed using the installation jig that also installs the tensioning shoes. This can prevent inaccuracies that arise when measuring at a different position from the installation location, especially for window rebates that taper sharply toward the window glass.

[0049] Furthermore, a method for mounting a tensioning shoe of a pleated blind system on a horizontal window rebate section with a mounting device described above according to claim 14 is according to the invention.

[0050] The procedure includes at least the following steps: Inserting a clamping shoe into the clamping shoe holder; Inserting a screw into the screw holder; Placing the support surface of the mounting device on a horizontal window rebate section; Placing the contact surface on a vertical window rebate section; and

[0051] Screw the screw through a mounting hole of the clamping shoe into the mounting surface of the horizontal window rebate section.

[0052] Preferably, the previously described steps of determining the width of the pleated blind system are first performed, and the required height of the pleated blind system is determined. A corresponding pleated blind system is then provided. A tensioning shoe is then mounted in each corner of the window rebate according to the previously described method, using the same or at least an identical mounting device as used for determining the width. The pleated blind system can then be mounted on the tensioning shoes.

[0053] In the following, an embodiment of the mounting device according to the invention is explained in more detail with reference to a drawing. Fig. 1 shows a mounting device according to the invention in a perspective view; Fig. 2 the mounting device Fig. 1 in another perspective view; Fig. 3 the mounting device Fig. 1 in a third perspective view; Fig. 4 the mounting device Fig. 1 in a fourth perspective view; Fig. 5 the mounting device Fig. 1 in a front view; Fig. 6 the mounting device Fig. 1 in a side view and Fig. 7 the mounting device Fig. 1 in a top view.

[0054] The Fig. 1 to 7 show an embodiment of the mounting device 1 according to the invention in different views.

[0055] The mounting device 1 is used to attach a tension shoe 2a, 2b of a pleated blind system to a window rebate. For this purpose, a lower part of the tension shoe 2a, 2b has a mounting hole 4, in the illustrated case a slotted hole, through which a screw 6 can be screwed into the window rebate.

[0056] An upper part for holding the cords of a pleated blind system can be pushed or clipped onto the lower part of the tension shoe 2a, 2b. Two tension shoes 2a, 2b are mounted on the window rebate for each horizontal window rebate section. Each of the tension shoes 2a, 2b is positioned near a vertical window rebate section, so that a tension shoe 2a, 2b is mounted in each of the four corners of a rectangular window. Nearby in this case means that a window pane covered by the pleated blind system is almost completely covered, and there are practically no more viewing gaps, or the viewing gaps are as small as possible, yet the pleated blind system does not touch the vertical window rebate sections.

[0057] Using the mounting device, the lower parts of the tensioning shoes 2a, 2b can be easily and precisely attached to the horizontal window rebate sections. Furthermore, the mounting device can also be used to measure the width of a pleated blind system required for the window. Since the width of the pleated blind system is determined and the tensioning shoe is mounted using the same device, problems can be avoided that arise, for example, when the width of the pleated blind system does not match the spacing of the mounted tensioning shoes because the measuring equipment used has different tolerances or a measurement error was made, for example, when the tensioning shoes are mounted at a different location / depth of the rebate than where the width of the window rebate was measured.

[0058] The mounting device consists of a positioning unit 8 and two screw holders 10.

[0059] The positioning unit 8 is essentially mirror-symmetrical to a center line M. On both sides of the center line M, the positioning unit 8 forms a tension shoe receptacle 12a, 12b in each case, in which a part of a tension shoe 2a, 2b for a pleated blind system, hereinafter referred to simply as a tension shoe, is received. The tension shoe receptacles 12a, 12b are each rectangular recesses that extend from a lateral contact surface 14a, 14b of the positioning unit 8 in the direction of the center line M. The tension shoe receptacles 12a, 12b extend continuously from a user side S1 to a support side S2 of the positioning unit 8. The tension shoe receptacles 12a, 12b are thus bounded on three sides.

[0060] At each end of each clamping shoe receptacle 12a, 12b opposite the contact surfaces 14a, 14b from which the clamping shoe receptacles 12a, 12b extend, the latter is delimited by a front stop surface 16a, 16b. The clamping shoe 2a, 2b is inserted into the clamping shoe receptacle 12a, 12b along a first direction up to the stop surface 16a, 16b of the clamping shoe receptacle. Thus, the position of the clamping shoe 2a, 2b in the mounting device 1 and thus the mounting position on the window rebate is fixed along a first direction R1.

[0061] The front stop surface 16a, 16b each has a fixed mounting distance D along the first direction R1 from the opposite contact surface 14a, 14b on the other side of the center line M. If the contact surface 14a, 14b is applied to a vertical window rebate, the mounting position of the clamping shoe 2a, 2b along the first direction R1 is determined by the mounting distance D between the contact surface 14a, 14b and the front stop surface 16a, 16b. The mounting distance D is preferably between 40 and 60 mm, more preferably 50 mm.

[0062] Two side surfaces 18 per clamping shoe receptacle 12a, 12b determine the position of the clamping shoe 2a, 2b in the mounting device 1 and thus also the mounting position on the window rebate in a second direction R2. The second direction R2 runs parallel to the center line M. The clamping shoe 2a, 2b is held in the clamping shoe receptacle 12a, 12b by a press fit. Accordingly, the width B of the clamping shoe 2a, 2b is larger than the clamping shoe receptacle 12a, 12b, i.e., the distance between the two side surfaces 18 from each other.

[0063] On the support side S2 of the positioning unit 8, two projections 20 and a support surface 22 are formed. The support surface 22 is designed to be placed on the mounting surface of the horizontal window rebate section, which is arranged substantially orthogonally to a window surface of the window. In the present embodiment, the support surface 22 is planar. In alternative embodiments, the support surface can also be formed from multiple support points or support lines, for example, by webs or curvatures.

[0064] The projections 20 each form a positioning stop 24. The positioning stops 24 are designed to bear against a front surface of the horizontal window rebate section in order to determine the mounting position of the clamping shoe 2a, 2b in the second direction R2. The positioning stop 24 is arranged such that its contact surface is at an angle of approximately 110° to the support surface. This results in line contact at an edge between the mounting surface and the front surface of the horizontal window rebate section if the angle between the mounting surface and the front surface is less than 110°. Such line contact by an oblique positioning stop 24 offers the advantage that the desired mounting position along the second direction is achieved regardless of the shape of the horizontal window rebate section.

[0065] To mount the tension shoe 2a, 2b or to measure the width of the pleated blind system, the support surface 22 is placed on the mounting surface of the horizontal window rebate section. The mounting surface of the lower horizontal window rebate section faces upward, and the mounting surface of the upper horizontal window rebate section faces downward.

[0066] The positioning stop 24 is applied to a front surface of the horizontal window rebate section, which is arranged at an angle to the mounting surface. The angle is 90° or greater and smaller than the angle between the support surface 22 and the contact surface of the positioning stop 24 of the mounting device 1. The front surface forms a forward-facing viewing surface, which is perceived by observers even when the pleated blind is closed. Thus, it is advantageous to determine the mounting position along the second direction R2 with respect to the front surface, rather than with respect to the window surface formed by a window pane.

[0067] Furthermore, the positioning unit 8 has a first recess 30 on each end stop surface, into which a projection of the clamping shoe engages to block movement of the clamping shoe 2a, 2b along an axial direction parallel to a longitudinal axis A of the screw 6, which extends orthogonally to the support surface 22, or to a receiving opening 33 of the screw holder for receiving the screw. In the illustrated embodiment, this prevents movement of the clamping shoe 2a, 2b relative to the mounting device in the direction of the user side S1.

[0068] Furthermore, the positioning unit 8 has a second recess 26 for fixing the clamping shoe along an axial direction that is parallel to a longitudinal axis A running orthogonal to the support surface 22. Each of the clamping shoes 2a, 2b has two projections 28 that engage over the second recess 26 and, when mounted on the lower horizontal window rebate section, block movement along the axial direction downwards. In the illustrated embodiment, this prevents movement of the clamping shoe 2a, 2b in an axial direction that is opposite to the axial direction in which the clamping shoe 2a, 2b is fixed by the first recess 30. This prevents movement of the clamping shoe 2a, 2b relative to the mounting device in the direction of the user side S1. The clamping shoe 2a, 2b is thus fixed in both axial directions along the longitudinal axis A.

[0069] Two screw holders 10 are attached to the positioning unit. The screw holders 10 each comprise a hollow cylinder 32 with the receiving opening 33 for holding the screws 6 and a cylindrical solid-state joint 34. Each of the hollow cylinders 32 is formed from two half-cylinders 36, each of which is attached to the cylindrical solid-state joint 34 via two webs 38.

[0070] The two hollow cylinders 32 are each arranged in relation to a respective clamping shoe receptacle 12a, 12b of the positioning unit 8 such that a screw 6 received in the hollow cylinder 32 is held above a mounting hole 4 of the clamping shoe 2a, 2b such that it is guided through the mounting hole 4 by being pressed down and can be screwed into the window rebate.

[0071] For fastening, the cylindrical solid-state joints 34 each have an internal thread. Each of the screw holders 10 is fastened to the positioning unit 8 by means of a fastening screw 40, which extends through the positioning unit 8 from the support side S2 of the positioning unit 8 and is screwed into the internal thread of the solid-state joint 34.

[0072] Furthermore, each of the screw holders 10 has two actuating webs 42, each of which is attached to one of the two half-cylinders 36. By pressing on the actuating webs 42 or pushing the actuating webs 42 apart, the half-cylinders 36 can be moved apart. In this case, the flexure joint 34 and / or the webs 38 connecting the half-cylinders 36 to the flexure joint 34 deform elastically.

[0073] A screw head stop is formed by a narrowing of the inner diameter of the hollow cylinder 32 or the receiving opening 33 along the longitudinal axis A. In the present case, the narrowing is formed by a second section 46 of the receiving opening 33, which has a smaller diameter than a first section 44 of the receiving opening 33. The screw head stop is formed by a conical section 48 of the receiving opening 33, which connects the first section 44 to the second section 46.

[0074] The receiving opening for the screw 6 in the second section 46 preferably has a larger diameter than the screw shaft and a smaller diameter than the screw head when the screw holder 10 is in an unclamped normal state in which the solid-state joint 34 is not deformed, or when a screw head is already located in the first section 44 of the receiving opening 33 and pressed apart, so that the inner diameter of the receiving opening 33 in the first section 44 corresponds to the diameter of the screw head.

[0075] The screws 6 can be inserted into the screw holders 10 so that the screw heads rest on the upper edges 50 of the hollow cylinders 32. By actuating the actuating webs 42, the half-cylinders 36 of the hollow cylinders 32 are pressed apart sufficiently that the screws 6 can be moved through the first section 44 of the receiving opening 33, expediently automatically due to their own weight, and come to rest with the screw heads on the screw head stop.

[0076] When the actuating webs 42 are released, the half-cylinders 36 move toward their original normal state due to an elastic restoring force of the solid-state joint 34. A press fit is created between the screw head and the hollow cylinder 32, so that the screws 6 are held force-lockingly in the axial directions along the longitudinal axis A. This enables simple overhead installation, for example, on an upper horizontal window rebate section, without the screws 6 having to be held separately.

[0077] When an axial force is applied to the screw to move it through the mounting hole 4 of the clamping shoe 2a, 2b, the hollow cylinder 32 is further pushed apart by the screw head stop, i.e., by its conical section 48. The conical shape of the screw head stop and the conical section 48 of the receiving opening enables continuous and secure movement of the screw 6 through the second section 46 of the receiving opening 33, whereby the hollow cylinder 32 is evenly pushed apart.

[0078] Along the axial direction, the screw head stop is positioned in such a way that a screw 6 resting with the screw head on the screw head stop does not completely penetrate the clamping shoe 2a, 2b.

[0079] Before installing a pleated blind, the correct dimensions for the respective window must be determined. The width of the pleated blind depends on the distance between the vertical window rebate sections. The illustrated installation device 1 can be used to determine the width of a pleated blind for the respective window.

[0080] To do this, a user can place the mounting device 1 or simply the positioning unit 8 with the support surface 22 onto one of the horizontal window rebate sections and simultaneously push it with the contact surface 14a, 14b up to one of the vertical window rebate sections. They can then apply a measurement mark to the front stop surface 16a, 16b in the clamping shoe holder 12a, 12b on the mounting surface of the horizontal window rebate section.

[0081] In the illustrated embodiment, indicators 52a, 52b indicate on which of the end stop surfaces 16a, 16b the respective measurement mark should be made. If the left contact surface 14a is pushed against the left vertical window rebate section, the measurement mark should be made on the end stop surface 16b marked with an L-shaped indicator 52b, i.e., the right end stop surface 16b. If the right contact surface 14b is pushed against the right vertical window rebate section, the measurement mark should be made on the left end stop surface 16a marked with an R-shaped indicator 52a.

[0082] If a measurement mark has been made on both ends of the horizontal window rebate section, the distance between the two measurement marks can be measured. A specified offset value must be added to the measured distance to determine the required width of the pleated blind. The offset value is a maximum of twice the installation distance D. The offset value is preferably between 25 and 200 mm. The width of the pleated blind refers to the width of one of the pleated blind's privacy screens.

[0083] To assemble the pleated blind system, a lower element of a tension shoe 2a, 2b is pushed laterally, i.e., from the contact surface 14a, 14b, into one of the tension shoe receptacles 12a, 12b. If the tension shoe 2b for the left side of the pleated blind system is mounted first, it is inserted into the positioning unit 8 from the right at the tension shoe receptacle 12b marked with the L-shaped indicator 52b until it rests against the front stop surface 16b. A screw 6 is then inserted into the screw holder 10 arranged above it, and the half cylinders 36 of the hollow cylinder 32 are moved apart by means of the actuating webs 42, so that the screw 6 slides with the screw head into the hollow cylinder 32 and comes to rest on the screw head stop.In the next step, the mounting device 1 is placed with the support surface 22 on the mounting surface of the lower horizontal window rebate section, so that the support surface 14a rests on the left-hand, vertical window rebate section and the positioning stops 24 rest on the front surface of the horizontal window rebate section.

[0084] In a further step, the screw 6 is pushed along the axial direction in the direction of the horizontal window rebate section through the screw head stop and the mounting hole 4 of the clamping shoe 2 and screwed to the window rebate.

[0085] To remove the mounting device 1, it is pulled sideways to the right away from the mounted clamping shoe 2a. The right end of the mounting device 1, which does not rest against the vertical window rebate section, can be moved upwards from the horizontal window rebate section, so that the mounting device 1 is in an inclined position and can then be pulled out more easily. This is possible because first and second recesses 26, 30 are arranged at opposite ends of the clamping shoe receptacle 12a. Furthermore, the recess of the clamping shoe receptacle 12a is widened at the left end, i.e. the end adjacent to the contact surface 14a. Thus, the projections 28 of the clamping shoe 2a no longer press the positioning unit 8 downwards once it has been pulled slightly to the right away from the clamping shoe 2a.

[0086] The next clamping shoe 2a can then be mounted in the same way on the left side of the window. It is inserted into the clamping shoe holder 12a until it rests against the front stop surface 16a, and the contact surface 14b is placed against the right-side, vertical window rebate section.

[0087] To mount the clamping shoes 2a, 2b on the upper horizontal window rebate section, the mounting device 1 must be used in reverse. This means that the contact surface 14b is placed against the left window rebate, and the clamping shoe 2a for the left side is pushed into the clamping shoe holder 12a up to the stop surface 16a, which is also used for the dimension marking on the left side. The mounting of the clamping shoe 2b on the right side of the upper window rebate section is carried out in reverse. List of reference symbols 1 mounting device 2a, 2b clamping shoe 4 mounting holes 6 screw 8 Positioning unit 10 screw holders 12a, 12b clamping shoe holder 14a, 14b contact surface 16 front stop surface 18 side surfaces 20 lead 22 support surface 24 Positioning stop 26 second jump 28 Clamping shoe projection 30 first jump 32 hollow cylinders 33 Receiving opening 34 Solid joint 36 Half cylinder / part of the screw holder 38 bridges 40 fixing screw 42 Actuating bridge 44 first section 46 second section 48 conical section 50a,50b upper edge 52a,52b Indicator A Longitudinal axis B Width D Mounting distance M center line R1 first direction R2 second direction S1 user side S2 support side

Claims

[1] Mounting device for mounting a tension shoe of a pleated blind system on a horizontal window rebate section, comprising a positioning unit with a support surface (22) for resting on a mounting surface of the horizontal window rebate section adjacent to a window glass, a contact surface (14a, 14b) arranged orthogonally to the support surface (22) for applying the mounting device (1) to a vertical window rebate section perpendicular to the horizontal window rebate section and a clamping shoe holder (12a, 12b) formed by a recess in the positioning unit for receiving and holding the clamping shoe (2a, 2b), which is formed at one end by a fixed mounting distance (D) from the contact surface (14a, 14b), frontal stop surface (16a, 16b) and extends away from the contact surface (14a, 14b) along a first direction (R1) parallel to the window glass, and a screw holder (10) fastened on a user side (S1) of the positioning unit opposite the support surface (22) and having a receiving opening (33) for clamping a screw (6), wherein a longitudinal axis (A) of the receiving opening (33) is arranged orthogonally to the support surface (22) and extends through the clamping shoe receptacle (12a, 12b) in order to guide the screw (6) through a mounting hole (4) of a clamping shoe (2a, 2b) received in the clamping shoe receptacle (12a, 12b), wherein the receiving opening (33) is formed from a plurality of parts (36) of the screw holder (10) which are elastically fastened to the positioning unit, and wherein the receiving opening (33) is elastically expandable to allow the screw (6) and the screw head to be pushed through along the longitudinal axis (A) and the clamping shoe receptacle to be screwed to the window rebate section. [2] Mounting device according to claim 1, characterized by that the receiving opening (33) of the screw holder (10) is cylindrical. [3] Mounting device according to one of the preceding claims, characterized by that the receiving opening (33) has a screw head stop formed by a narrowing of an inner diameter of the receiving opening (33). [4] Mounting device according to claim 3, characterized bythat the receiving opening (33) in the screw head stop tapers conically along the longitudinal axis (A) in the direction of the support surface (22) of the positioning unit, so that the receiving opening (33) is continuously widened when a screw head of the screw (6) is moved through the screw head stop. [5] Mounting device according to one of the preceding claims, characterized by in that the positioning unit has, on a support side (S2) on which the support surface (22) is formed, a positioning stop (24) which is designed to bear against a front surface of the horizontal window rebate section in order to define a mounting position of the positioning unit in a second direction (R2) orthogonal to the window glass. [6] Mounting device according to claim 5, characterized bythat a contact surface of the positioning stop (24) is arranged at an angle between 90° and 180° or between 90° and 135° or between 100° and 135° to the support surface (22). [7] Mounting device according to one of the preceding claims, characterized by that the screw holder (10) is detachably attached to the positioning unit. [8] Mounting device according to one of the preceding claims, characterized by that the clamping shoe receptacle (12a, 12b) has two parallel side surfaces (18) which delimit the recess and are arranged orthogonally to the front stop surface (16a, 16b) and are designed to form a press fit with the clamping shoe (2a, 2b). [9] Mounting device according to one of the preceding claims, characterized byin that in an axial direction running along the longitudinal axis (A), a first recess (30) is provided in the positioning unit adjacent to the stop surface (16a, 16b), which first recess (30) extends from the stop surface (16a, 16b) along the first direction (R1) and is suitable for receiving a corresponding projection (28) of a clamping shoe (2a, 2b) in order to limit a movement of the clamping shoe in the axial direction. [10] Mounting device according to one of claims 8 or 9, characterized by in that in an axial direction running along the longitudinal axis (A), second recesses (26) are provided in the positioning unit adjacent to the side surfaces (18), which extend from the stop surface (16a, 16b) along the second direction (R2) and are suitable for receiving corresponding projections (28) of a clamping shoe (2a, 2b) in order to limit a movement of the clamping shoe in the axial direction. [11] Mounting device according to one of the preceding claims, characterized by a first lateral contact surface (14a, 14b) and a second lateral contact surface (14a, 14b) parallel to the first, and a first and a second clamping shoe receptacle (12a, 12b) aligned with one another, wherein the two contact surfaces (14a, 14b) are arranged at opposite ends of the positioning unit, wherein the first clamping shoe receptacle (12a, 12b) extends from a first contact surface (14a, 14b) to a first end-side stop surface (16a, 16b), which is formed at the predetermined mounting distance (D) from the second contact surface (14a, 14b), into the positioning unit and wherein the second clamping shoe receptacle (12a, 12b) extends into the positioning unit from a second contact surface (14a, 14b) to a second end-side stop surface (16a, 16b), which is formed at the predetermined mounting distance (D) from the first contact surface (14a, 14b). [12] Mounting device according to claim 11, characterized by that one screw holder (10) is provided for each clamping shoe holder (12a, 12b). [13] Method for determining a width of a pleated blind system for a window rebate with a mounting device according to one of the preceding claims, characterized by the following steps: Placing the support surface (22) of the mounting device (1) on the mounting surface of the horizontal window rebate section, simultaneously placing the contact surface (14a, 14b) against the vertical window rebate section; Applying a dimension mark to the mounting surface on the front stop surface (16a, 16b) in the clamping shoe holder (12a, 12b); Placing the support surface (22) of the mounting device (1) or a second mirrored mounting device on the mounting surface of the horizontal window rebate section, simultaneously applying the contact surface (14a, 14b) to a second vertical window rebate section opposite the first vertical window rebate section; Applying a second dimension mark on the mounting surface on a further front stop surface (16a, 16b) in the clamping shoe holder (12a, 12b), Measuring a distance between the first and second measuring marks and Add twice the installation distance (D) to the measured distance to determine the maximum width of the pleated blind system. [14] Method for mounting a tensioning shoe of a pleated blind system on a horizontal window rebate section with a mounting device according to one of claims 1 to 12, characterized by the following steps: Inserting a clamping shoe (2a, 2b) into the clamping shoe holder (12a, 12b); Inserting a screw (6) into the screw holder (10); Placing the support surface (22) of the mounting device (1) on a horizontal window rebate section; simultaneously placing the contact surface (14a, 14b) on a vertical window rebate section and Screw the screw (6) through a mounting hole (4) of the clamping shoe (2a, 2b) into the mounting surface of the horizontal window rebate section.

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